---
_id: '14711'
abstract:
- lang: eng
  text: "In nature, different species find their niche in a range of environments,
    each with its unique characteristics. While some thrive in uniform (homogeneous)
    landscapes where environmental conditions stay relatively consistent across space,
    others traverse the complexities of spatially heterogeneous terrains. Comprehending
    how species are distributed and how they interact within these landscapes holds
    the key to gaining insights into their evolutionary dynamics while also informing
    conservation and management strategies.\r\n\r\nFor species inhabiting heterogeneous
    landscapes, when the rate of dispersal is low compared to spatial fluctuations
    in selection pressure, localized adaptations may emerge. Such adaptation in response
    to varying selection strengths plays an important role in the persistence of populations
    in our rapidly changing world. Hence, species in nature are continuously in a
    struggle to adapt to local environmental conditions, to ensure their continued
    survival. Natural populations can often adapt in time scales short enough for
    evolutionary changes to influence ecological dynamics and vice versa, thereby
    creating a feedback between evolution and demography. The analysis of this feedback
    and the relative contributions of gene flow, demography, drift, and natural selection
    to genetic variation and differentiation has remained a recurring theme in evolutionary
    biology. Nevertheless, the effective role of these forces in maintaining variation
    and shaping patterns of diversity is not fully understood. Even in homogeneous
    environments devoid of local adaptations, such understanding remains elusive.
    Understanding this feedback is crucial, for example in determining the conditions
    under which extinction risk can be mitigated in peripheral populations subject
    to deleterious mutation accumulation at the edges of species’ ranges\r\nas well
    as in highly fragmented populations.\r\n\r\nIn this thesis we explore both uniform
    and spatially heterogeneous metapopulations, investigating and providing theoretical
    insights into the dynamics of local adaptation in the latter and examining the
    dynamics of load and extinction as well as the impact of joint ecological and
    evolutionary (eco-evolutionary) dynamics in the former. The thesis is divided
    into 5 chapters.\r\n\r\nChapter 1 provides a general introduction into the subject
    matter, clarifying concepts and ideas used throughout the thesis. In chapter 2,
    we explore how fast a species distributed across a heterogeneous landscape adapts
    to changing conditions marked by alterations in carrying capacity, selection pressure,
    and migration rate.\r\n\r\nIn chapter 3, we investigate how migration selection
    and drift influences adaptation and the maintenance of variation in a metapopulation
    with three habitats, an extension of previous models of adaptation in two habitats.
    We further develop analytical approximations for the critical threshold required
    for polymorphism to persist.\r\n\r\nThe focus of chapter 4 of the thesis is on
    understanding the interplay between ecology and evolution as coupled processes.
    We investigate how eco-evolutionary feedback between migration, selection, drift,
    and demography influences eco-evolutionary outcomes in marginal populations subject
    to deleterious mutation accumulation. Using simulations as well as theoretical
    approximations of the coupled dynamics of population size and allele frequency,
    we analyze how gene flow from a large mainland source influences genetic load
    and population size on an island (i.e., in a marginal population) under genetically
    realistic assumptions. Analyses of this sort are important because small isolated
    populations, are repeatedly affected by complex interactions between ecological
    and evolutionary processes, which can lead to their death. Understanding these
    interactions can therefore provide an insight into the conditions under which
    extinction risk can be mitigated in peripheral populations thus, contributing
    to conservation and restoration efforts.\r\n\r\nChapter 5 extends the analysis
    in chapter 4 to consider the dynamics of load (due to deleterious mutation accumulation)
    and extinction risk in a metapopulation. We explore the role of gene flow, selection,
    and dominance on load and extinction risk and further pinpoint critical thresholds
    required for metapopulation persistence.\r\n\r\nOverall this research contributes
    to our understanding of ecological and evolutionary mechanisms that shape species’
    persistence in fragmented landscapes, a crucial foundation for successful conservation
    efforts and biodiversity management."
acknowledged_ssus:
- _id: SSU
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Oluwafunmilola O
  full_name: Olusanya, Oluwafunmilola O
  id: 41AD96DC-F248-11E8-B48F-1D18A9856A87
  last_name: Olusanya
  orcid: 0000-0003-1971-8314
date_created: 2023-12-26T22:49:53Z
date_published: 2024-01-19T00:00:00Z
date_updated: 2025-05-26T09:05:10Z
day: '19'
ddc:
- '576'
degree_awarded: MS
department:
- _id: NiBa
- _id: GradSch
doi: 10.15479/at:ista:14711
ec_funded: 1
file:
- access_level: closed
  checksum: de179b1c6758f182ff0c70d8b38c1501
  content_type: application/zip
  creator: oolusany
  date_created: 2024-01-03T18:30:13Z
  date_updated: 2024-01-03T18:30:13Z
  file_id: '14730'
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  date_updated: 2024-01-03T18:31:34Z
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has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: '183'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: c08d3278-5a5b-11eb-8a69-fdb09b55f4b8
  grant_number: P32896
  name: Causes and consequences of population fragmentation
- _id: 34c872fe-11ca-11ed-8bc3-8534b82131e6
  grant_number: '26380'
  name: Polygenic Adaptation in a Metapopulation
publication_identifier:
  issn:
  - 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '10658'
    relation: part_of_dissertation
    status: public
  - id: '10787'
    relation: part_of_dissertation
    status: public
  - id: '14732'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
- first_name: Jitka
  full_name: Polechova, Jitka
  last_name: Polechova
- first_name: Himani
  full_name: Sachdeva, Himani
  last_name: Sachdeva
title: Local adaptation, genetic load and extinction in metapopulations
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2024'
...
---
_id: '13175'
abstract:
- lang: eng
  text: "About a 100 years ago, we discovered that our universe is inherently noisy,
    that is, measuring any physical quantity with a precision beyond a certain point
    is not possible because of an omnipresent inherent noise. We call this - the quantum
    noise. Certain physical processes allow this quantum noise to get correlated in
    conjugate physical variables. These quantum correlations can be used to go beyond
    the potential of our inherently noisy universe and obtain a quantum advantage
    over the classical applications. \r\n\r\nQuantum noise being inherent also means
    that, at the fundamental level, the physical quantities are not well defined and
    therefore, objects can stay in multiple states at the same time. For example,
    the position of a particle not being well defined means that the particle is in
    multiple positions at the same time. About 4 decades ago, we started exploring
    the possibility of using objects which can be in multiple states at the same time
    to increase the dimensionality in computation. Thus, the field of quantum computing
    was born. We discovered that using quantum entanglement, a property closely related
    to quantum correlations, can be used to speed up computation of certain problems,
    such as factorisation of large numbers, faster than any known classical algorithm.
    Thus began the pursuit to make quantum computers a reality. \r\n\r\nTill date,
    we have explored quantum control over many physical systems including photons,
    spins, atoms, ions and even simple circuits made up of superconducting material.
    However, there persists one ubiquitous theme. The more readily a system interacts
    with an external field or matter, the more easily we can control it. But this
    also means that such a system can easily interact with a noisy environment and
    quickly lose its coherence. Consequently, such systems like electron spins need
    to be protected from the environment to ensure the longevity of their coherence.
    Other systems like nuclear spins are naturally protected as they do not interact
    easily with the environment. But, due to the same reason, it is harder to interact
    with such systems. \r\n\r\nAfter decades of experimentation with various systems,
    we are convinced that no one type of quantum system would be the best for all
    the quantum applications. We would need hybrid systems which are all interconnected
    - much like the current internet where all sorts of devices can all talk to each
    other - but now for quantum devices. A quantum internet. \r\n\r\nOptical photons
    are the best contenders to carry information for the quantum internet. They can
    carry quantum information cheaply and without much loss - the same reasons which
    has made them the backbone of our current internet. Following this direction,
    many systems, like trapped ions, have already demonstrated successful quantum
    links over a large distances using optical photons. However, some of the most
    promising contenders for quantum computing which are based on microwave frequencies
    have been left behind. This is because high energy optical photons can adversely
    affect fragile low-energy microwave systems. \r\n\r\nIn this thesis, we present
    substantial progress on this missing quantum link between microwave and optics
    using electrooptical nonlinearities in lithium niobate. The nonlinearities are
    enhanced by using resonant cavities for all the involved modes leading to observation
    of strong direct coupling between optical and microwave frequencies. With this
    strong coupling we are not only able to achieve almost 100\\% internal conversion
    efficiency with low added noise, thus presenting a quantum-enabled transducer,
    but also we are able to observe novel effects such as cooling of a microwave mode
    using optics. The strong coupling regime also leads to direct observation of dynamical
    backaction effect between microwave and optical frequencies which are studied
    in detail here. Finally, we also report first observation of microwave-optics
    entanglement in form of two-mode squeezed vacuum squeezed 0.7dB below vacuum level.
    \r\nWith this new bridge between microwave and optics, the microwave-based quantum
    technologies can finally be a part of a quantum network which is based on optical
    photons - putting us one step closer to a future with quantum internet. "
acknowledged_ssus:
- _id: M-Shop
- _id: SSU
- _id: NanoFab
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
citation:
  ama: Sahu R. Cavity quantum electrooptics. 2023. doi:<a href="https://doi.org/10.15479/at:ista:13175">10.15479/at:ista:13175</a>
  apa: Sahu, R. (2023). <i>Cavity quantum electrooptics</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/at:ista:13175">https://doi.org/10.15479/at:ista:13175</a>
  chicago: Sahu, Rishabh. “Cavity Quantum Electrooptics.” Institute of Science and
    Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:13175">https://doi.org/10.15479/at:ista:13175</a>.
  ieee: R. Sahu, “Cavity quantum electrooptics,” Institute of Science and Technology
    Austria, 2023.
  ista: Sahu R. 2023. Cavity quantum electrooptics. Institute of Science and Technology
    Austria.
  mla: Sahu, Rishabh. <i>Cavity Quantum Electrooptics</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:13175">10.15479/at:ista:13175</a>.
  short: R. Sahu, Cavity Quantum Electrooptics, Institute of Science and Technology
    Austria, 2023.
date_created: 2023-06-30T08:07:43Z
date_published: 2023-05-05T00:00:00Z
date_updated: 2024-10-29T09:11:06Z
day: '05'
ddc:
- '537'
- '535'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:13175
ec_funded: 1
file:
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  checksum: 7d03f1a5a5258ee43dfc3323dea4e08f
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  date_created: 2023-06-30T08:17:25Z
  date_updated: 2023-06-30T08:17:25Z
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  checksum: c3b45317ae58e0527533f98c202d81b7
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  creator: cchlebak
  date_created: 2023-07-06T11:35:15Z
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  file_size: 37847025
  relation: source_file
file_date_updated: 2023-07-06T11:35:15Z
has_accepted_license: '1'
keyword:
- quantum optics
- electrooptics
- quantum networks
- quantum communication
- transduction
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '202'
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication_identifier:
  isbn:
  - 978-3-99078-030-5
  issn:
  - 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '12900'
    relation: old_edition
    status: public
  - id: '9114'
    relation: part_of_dissertation
    status: public
  - id: '10924'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
title: Cavity quantum electrooptics
tmp:
  image: /images/cc_by_nc_sa.png
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  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '12900'
abstract:
- lang: eng
  text: "About a 100 years ago, we discovered that our universe is inherently noisy,
    that is, measuring any physical quantity with a precision beyond a certain point
    is not possible because of an omnipresent inherent noise. We call this - the quantum
    noise. Certain physical processes allow this quantum noise to get correlated in
    conjugate physical variables. These quantum correlations can be used to go beyond
    the potential of our inherently noisy universe and obtain a quantum advantage
    over the classical applications. \r\n\r\nQuantum noise being inherent also means
    that, at the fundamental level, the physical quantities are not well defined and
    therefore, objects can stay in multiple states at the same time. For example,
    the position of a particle not being well defined means that the particle is in
    multiple positions at the same time. About 4 decades ago, we started exploring
    the possibility of using objects which can be in multiple states at the same time
    to increase the dimensionality in computation. Thus, the field of quantum computing
    was born. We discovered that using quantum entanglement, a property closely related
    to quantum correlations, can be used to speed up computation of certain problems,
    such as factorisation of large numbers, faster than any known classical algorithm.
    Thus began the pursuit to make quantum computers a reality. \r\n\r\nTill date,
    we have explored quantum control over many physical systems including photons,
    spins, atoms, ions and even simple circuits made up of superconducting material.
    However, there persists one ubiquitous theme. The more readily a system interacts
    with an external field or matter, the more easily we can control it. But this
    also means that such a system can easily interact with a noisy environment and
    quickly lose its coherence. Consequently, such systems like electron spins need
    to be protected from the environment to ensure the longevity of their coherence.
    Other systems like nuclear spins are naturally protected as they do not interact
    easily with the environment. But, due to the same reason, it is harder to interact
    with such systems. \r\n\r\nAfter decades of experimentation with various systems,
    we are convinced that no one type of quantum system would be the best for all
    the quantum applications. We would need hybrid systems which are all interconnected
    - much like the current internet where all sorts of devices can all talk to each
    other - but now for quantum devices. A quantum internet. \r\n\r\nOptical photons
    are the best contenders to carry information for the quantum internet. They can
    carry quantum information cheaply and without much loss - the same reasons which
    has made them the backbone of our current internet. Following this direction,
    many systems, like trapped ions, have already demonstrated successful quantum
    links over a large distances using optical photons. However, some of the most
    promising contenders for quantum computing which are based on microwave frequencies
    have been left behind. This is because high energy optical photons can adversely
    affect fragile low-energy microwave systems. \r\n\r\nIn this thesis, we present
    substantial progress on this missing quantum link between microwave and optics
    using electrooptical nonlinearities in lithium niobate. The nonlinearities are
    enhanced by using resonant cavities for all the involved modes leading to observation
    of strong direct coupling between optical and microwave frequencies. With this
    strong coupling we are not only able to achieve almost 100\\% internal conversion
    efficiency with low added noise, thus presenting a quantum-enabled transducer,
    but also we are able to observe novel effects such as cooling of a microwave mode
    using optics. The strong coupling regime also leads to direct observation of dynamical
    backaction effect between microwave and optical frequencies which are studied
    in detail here. Finally, we also report first observation of microwave-optics
    entanglement in form of two-mode squeezed vacuum squeezed 0.7dB below vacuum level.
    \r\nWith this new bridge between microwave and optics, the microwave-based quantum
    technologies can finally be a part of a quantum network which is based on optical
    photons - putting us one step closer to a future with quantum internet. "
acknowledged_ssus:
- _id: M-Shop
- _id: SSU
- _id: NanoFab
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Rishabh
  full_name: Sahu, Rishabh
  id: 47D26E34-F248-11E8-B48F-1D18A9856A87
  last_name: Sahu
  orcid: 0000-0001-6264-2162
citation:
  ama: Sahu R. Cavity quantum electrooptics. 2023. doi:<a href="https://doi.org/10.15479/at:ista:12900">10.15479/at:ista:12900</a>
  apa: Sahu, R. (2023). <i>Cavity quantum electrooptics</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/at:ista:12900">https://doi.org/10.15479/at:ista:12900</a>
  chicago: Sahu, Rishabh. “Cavity Quantum Electrooptics.” Institute of Science and
    Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:12900">https://doi.org/10.15479/at:ista:12900</a>.
  ieee: R. Sahu, “Cavity quantum electrooptics,” Institute of Science and Technology
    Austria, 2023.
  ista: Sahu R. 2023. Cavity quantum electrooptics. Institute of Science and Technology
    Austria.
  mla: Sahu, Rishabh. <i>Cavity Quantum Electrooptics</i>. Institute of Science and
    Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:12900">10.15479/at:ista:12900</a>.
  short: R. Sahu, Cavity Quantum Electrooptics, Institute of Science and Technology
    Austria, 2023.
date_created: 2023-05-05T11:08:50Z
date_published: 2023-05-05T00:00:00Z
date_updated: 2024-10-29T09:11:05Z
day: '05'
ddc:
- '537'
- '535'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/at:ista:12900
ec_funded: 1
file:
- access_level: closed
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file_date_updated: 2023-07-06T11:37:40Z
has_accepted_license: '1'
keyword:
- quantum optics
- electrooptics
- quantum networks
- quantum communication
- transduction
language:
- iso: eng
month: '05'
oa_version: Published Version
page: '190'
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication_identifier:
  isbn:
  - 978-3-99078-030-5
  issn:
  - 2663 - 337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '9114'
    relation: part_of_dissertation
    status: public
  - id: '10924'
    relation: part_of_dissertation
    status: public
  - id: '13175'
    relation: new_edition
    status: public
status: public
supervisor:
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
title: Cavity quantum electrooptics
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2023'
...
---
_id: '11473'
abstract:
- lang: eng
  text: "The polaron model is a basic model of quantum field theory describing a single
    particle\r\ninteracting with a bosonic field. It arises in many physical contexts.
    We are mostly concerned\r\nwith models applicable in the context of an impurity
    atom in a Bose-Einstein condensate as\r\nwell as the problem of electrons moving
    in polar crystals.\r\nThe model has a simple structure in which the interaction
    of the particle with the field is given\r\nby a term linear in the field’s creation
    and annihilation operators. In this work, we investigate\r\nthe properties of
    this model by providing rigorous estimates on various energies relevant to the\r\nproblem.
    The estimates are obtained, for the most part, by suitable operator techniques
    which\r\nconstitute the principal mathematical substance of the thesis.\r\nThe
    first application of these techniques is to derive the polaron model rigorously
    from first\r\nprinciples, i.e., from a full microscopic quantum-mechanical many-body
    problem involving an\r\nimpurity in an otherwise homogeneous system. We accomplish
    this for the N + 1 Bose gas\r\nin the mean-field regime by showing that a suitable
    polaron-type Hamiltonian arises at weak\r\ninteractions as a low-energy effective
    theory for this problem.\r\nIn the second part, we investigate rigorously the
    ground state of the model at fixed momentum\r\nand for large values of the coupling
    constant. Qualitatively, the system is expected to display\r\na transition from
    the quasi-particle behavior at small momenta, where the dispersion relation\r\nis
    parabolic and the particle moves through the medium dragging along a cloud of
    phonons, to\r\nthe radiative behavior at larger momenta where the polaron decelerates
    and emits free phonons.\r\nAt the same time, in the strong coupling regime, the
    bosonic field is expected to behave purely\r\nclassically. Accordingly, the effective
    mass of the polaron at strong coupling is conjectured to\r\nbe asymptotically
    equal to the one obtained from the semiclassical counterpart of the problem,\r\nfirst
    studied by Landau and Pekar in the 1940s. For polaron models with regularized
    form\r\nfactors and phonon dispersion relations of superfluid type, i.e., bounded
    below by a linear\r\nfunction of the wavenumbers for all phonon momenta as in
    the interacting Bose gas, we prove\r\nthat for a large window of momenta below
    the radiation threshold, the energy-momentum\r\nrelation at strong coupling is
    indeed essentially a parabola with semi-latus rectum equal to the\r\nLandau–Pekar
    effective mass, as expected.\r\nFor the Fröhlich polaron describing electrons
    in polar crystals where the dispersion relation is\r\nof the optical type and
    the form factor is formally UV–singular due to the nature of the point\r\ncharge-dipole
    interaction, we are able to give the corresponding upper bound. In contrast to\r\nthe
    regular case, this requires the inclusion of the quantum fluctuations of the phonon
    field,\r\nwhich makes the problem considerably more difficult.\r\nThe results
    are supplemented by studies on the absolute ground-state energy at strong coupling,\r\na
    proof of the divergence of the effective mass with the coupling constant for a
    wide class of\r\npolaron models, as well as the discussion of the apparent UV
    singularity of the Fröhlich model\r\nand the application of the techniques used
    for its removal for the energy estimates.\r\n"
acknowledged_ssus:
- _id: SSU
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Krzysztof
  full_name: Mysliwy, Krzysztof
  id: 316457FC-F248-11E8-B48F-1D18A9856A87
  last_name: Mysliwy
citation:
  ama: 'Mysliwy K. Polarons in Bose gases and polar crystals: Some rigorous energy
    estimates. 2022. doi:<a href="https://doi.org/10.15479/at:ista:11473">10.15479/at:ista:11473</a>'
  apa: 'Mysliwy, K. (2022). <i>Polarons in Bose gases and polar crystals: Some rigorous
    energy estimates</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:11473">https://doi.org/10.15479/at:ista:11473</a>'
  chicago: 'Mysliwy, Krzysztof. “Polarons in Bose Gases and Polar Crystals: Some Rigorous
    Energy Estimates.” Institute of Science and Technology Austria, 2022. <a href="https://doi.org/10.15479/at:ista:11473">https://doi.org/10.15479/at:ista:11473</a>.'
  ieee: 'K. Mysliwy, “Polarons in Bose gases and polar crystals: Some rigorous energy
    estimates,” Institute of Science and Technology Austria, 2022.'
  ista: 'Mysliwy K. 2022. Polarons in Bose gases and polar crystals: Some rigorous
    energy estimates. Institute of Science and Technology Austria.'
  mla: 'Mysliwy, Krzysztof. <i>Polarons in Bose Gases and Polar Crystals: Some Rigorous
    Energy Estimates</i>. Institute of Science and Technology Austria, 2022, doi:<a
    href="https://doi.org/10.15479/at:ista:11473">10.15479/at:ista:11473</a>.'
  short: 'K. Mysliwy, Polarons in Bose Gases and Polar Crystals: Some Rigorous Energy
    Estimates, Institute of Science and Technology Austria, 2022.'
date_created: 2022-06-30T12:15:03Z
date_published: 2022-07-01T00:00:00Z
date_updated: 2023-09-07T13:43:52Z
day: '01'
ddc:
- '515'
- '539'
degree_awarded: PhD
department:
- _id: GradSch
- _id: RoSe
doi: 10.15479/at:ista:11473
ec_funded: 1
file:
- access_level: open_access
  checksum: 7970714a20a6052f75fb27a6c3e9976e
  content_type: application/pdf
  creator: kmysliwy
  date_created: 2022-07-05T08:12:56Z
  date_updated: 2022-07-05T08:12:56Z
  file_id: '11486'
  file_name: thes1_no_isbn_2_1b.pdf
  file_size: 1830973
  relation: main_file
  success: 1
- access_level: closed
  checksum: 647a2011fdf56277096c9350fefe1097
  content_type: application/zip
  creator: kmysliwy
  date_created: 2022-07-05T08:15:52Z
  date_updated: 2022-07-05T08:17:12Z
  file_id: '11487'
  file_name: thes_source.zip
  file_size: 5831060
  relation: source_file
file_date_updated: 2022-07-05T08:17:12Z
has_accepted_license: '1'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: '138'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '10564'
    relation: part_of_dissertation
    status: public
  - id: '8705'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Robert
  full_name: Seiringer, Robert
  id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
  last_name: Seiringer
  orcid: 0000-0002-6781-0521
title: 'Polarons in Bose gases and polar crystals: Some rigorous energy estimates'
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2022'
...
---
_id: '11879'
abstract:
- lang: eng
  text: "As the overall global mean surface temperature is increasing due to climate
    change, plant\r\nadaptation to those stressful conditions is of utmost importance
    for their survival. Plants are\r\nsessile organisms, thus to compensate for their
    lack of mobility, they evolved a variety of\r\nmechanisms enabling them to flexibly
    adjust their physiological, growth and developmental\r\nprocesses to fluctuating
    temperatures and to survive in harsh environments. While these unique\r\nadaptation
    abilities provide an important evolutionary advantage, overall modulation of plant\r\ngrowth
    and developmental program due to non-optimal temperature negatively affects biomass\r\nproduction,
    crop productivity or sensitivity to pathogens. Thus, understanding molecular\r\nprocesses
    underlying plant adaptation to increased temperature can provide important\r\nresources
    for breeding strategies to ensure sufficient agricultural food production.\r\nAn
    increase in ambient temperature by a few degrees leads to profound changes in
    organ growth\r\nincluding enhanced hypocotyl elongation, expansion of petioles,
    hyponastic growth of leaves and\r\ncotyledons, collectively named thermomorphogenesis
    (Casal & Balasubramanian, 2019). Auxin,\r\none of the best-studied growth hormones,
    plays an essential role in this process by direct\r\nactivation of transcriptional
    and non-transcriptional processes resulting in elongation growth\r\n(Majda & Robert,
    2018).To modulate hypocotyl growth in response to high ambient temperature\r\n(hAT),
    auxin needs to be redistributed accordingly. PINs, auxin efflux transporters,
    are key\r\ncomponents of the polar auxin transport (PAT) machinery, which controls
    the amount and\r\ndirection of auxin translocated in the plant tissues and organs(Adamowski
    & Friml, 2015). Hence,\r\nPIN-mediated transport is tightly linked with thermo-morphogenesis,
    and interference with PAT\r\nthrough either chemical or genetic means dramatically
    affecting the adaptive responses to hAT.\r\nIntriguingly, despite the key role
    of PIN mediated transport in growth response to hAT, whether\r\nand how PINs at
    the level of expression adapt to fluctuation in temperature is scarcely\r\nunderstood.\r\nWith
    genetic, molecular and advanced bio-imaging approaches, we demonstrate the role
    of PIN\r\nauxin transporters in the regulation of hypocotyl growth in response
    to hAT. We show that via\r\nadjustment of PIN3, PIN4 and PIN7 expression in cotyledons
    and hypocotyls, auxin distribution is modulated thereby determining elongation
    pattern of epidermal cells at hAT. Furthermore, we\r\nidentified three Zinc-Finger
    (ZF) transcription factors as novel molecular components of the\r\nthermo-regulatory
    network, which through negative regulation of PIN transcription adjust the\r\ntransport
    of auxin at hAT. Our results suggest that the ZF-PIN module might be a part of
    the\r\nnegative feedback loop attenuating the activity of the thermo-sensing pathway
    to restrain\r\nexaggerated growth and developmental responses to hAT."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
- _id: SSU
acknowledgement: I would like to acknowledge ISTA and all the people from the Scientific
  Service Units and at ISTA, in particular Dorota Jaworska for excellent technical
  and scientific support as well as ÖAW for funding my research for over 3 years (DOC
  ÖAW Fellowship PR1022OEAW02).
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Christina
  full_name: Artner, Christina
  id: 45DF286A-F248-11E8-B48F-1D18A9856A87
  last_name: Artner
citation:
  ama: Artner C. Modulation of auxin transport via ZF proteins adjust plant response
    to high ambient temperature. 2022. doi:<a href="https://doi.org/10.15479/at:ista:11879">10.15479/at:ista:11879</a>
  apa: Artner, C. (2022). <i>Modulation of auxin transport via ZF proteins adjust
    plant response to high ambient temperature</i>. Institute of Science and Technology
    Austria. <a href="https://doi.org/10.15479/at:ista:11879">https://doi.org/10.15479/at:ista:11879</a>
  chicago: Artner, Christina. “Modulation of Auxin Transport via ZF Proteins Adjust
    Plant Response to High Ambient Temperature.” Institute of Science and Technology
    Austria, 2022. <a href="https://doi.org/10.15479/at:ista:11879">https://doi.org/10.15479/at:ista:11879</a>.
  ieee: C. Artner, “Modulation of auxin transport via ZF proteins adjust plant response
    to high ambient temperature,” Institute of Science and Technology Austria, 2022.
  ista: Artner C. 2022. Modulation of auxin transport via ZF proteins adjust plant
    response to high ambient temperature. Institute of Science and Technology Austria.
  mla: Artner, Christina. <i>Modulation of Auxin Transport via ZF Proteins Adjust
    Plant Response to High Ambient Temperature</i>. Institute of Science and Technology
    Austria, 2022, doi:<a href="https://doi.org/10.15479/at:ista:11879">10.15479/at:ista:11879</a>.
  short: C. Artner, Modulation of Auxin Transport via ZF Proteins Adjust Plant Response
    to High Ambient Temperature, Institute of Science and Technology Austria, 2022.
date_created: 2022-08-17T07:58:53Z
date_published: 2022-08-17T00:00:00Z
date_updated: 2023-09-09T22:30:04Z
day: '17'
ddc:
- '580'
degree_awarded: PhD
department:
- _id: GradSch
- _id: EvBe
doi: 10.15479/at:ista:11879
file:
- access_level: open_access
  checksum: a2c2fdc28002538840490bfa6a08b2cb
  content_type: application/pdf
  creator: cartner
  date_created: 2022-08-17T12:08:49Z
  date_updated: 2023-09-09T22:30:03Z
  embargo: 2023-09-08
  file_id: '11907'
  file_name: ChristinaArtner_PhD_Thesis_2022.pdf
  file_size: 11113608
  relation: main_file
- access_level: closed
  checksum: 66b461c074b815fbe63481b3f46a9f43
  content_type: application/octet-stream
  creator: cartner
  date_created: 2022-08-17T12:08:59Z
  date_updated: 2023-09-09T22:30:03Z
  embargo_to: open_access
  file_id: '11908'
  file_name: ChristinaArtner_PhD_Thesis_2022.7z
  file_size: 19097730
  relation: source_file
file_date_updated: 2023-09-09T22:30:03Z
has_accepted_license: '1'
keyword:
- high ambient temperature
- auxin
- PINs
- Zinc-Finger proteins
- thermomorphogenesis
- stress
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: '128'
project:
- _id: 2685A872-B435-11E9-9278-68D0E5697425
  name: Hormonal regulation of plant adaptive responses to environmental signals
publication_identifier:
  isbn:
  - 978-3-99078-022-0
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Eva
  full_name: Benková, Eva
  id: 38F4F166-F248-11E8-B48F-1D18A9856A87
  last_name: Benková
  orcid: 0000-0002-8510-9739
title: Modulation of auxin transport via ZF proteins adjust plant response to high
  ambient temperature
type: dissertation
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '11951'
abstract:
- lang: eng
  text: The mammalian hippocampal formation (HF) plays a key role in several higher
    brain functions, such as spatial coding, learning and memory. Its simple circuit
    architecture is often viewed as a trisynaptic loop, processing input originating
    from the superficial layers of the entorhinal cortex (EC) and sending it back
    to its deeper layers. Here, we show that excitatory neurons in layer 6b of the
    mouse EC project to all sub-regions comprising the HF and receive input from the
    CA1, thalamus and claustrum. Furthermore, their output is characterized by unique
    slow-decaying excitatory postsynaptic currents capable of driving plateau-like
    potentials in their postsynaptic targets. Optogenetic inhibition of the EC-6b
    pathway affects spatial coding in CA1 pyramidal neurons, while cell ablation impairs
    not only acquisition of new spatial memories, but also degradation of previously
    acquired ones. Our results provide evidence of a functional role for cortical
    layer 6b neurons in the adult brain.
acknowledged_ssus:
- _id: Bio
- _id: SSU
acknowledgement: We thank F. Marr and A. Schlögl for technical assistance, E. Kralli-Beller
  for manuscript editing, as well as C. Sommer and the Imaging and Optics Facility
  of the Institute of Science and Technology Austria (ISTA) for image analysis scripts
  and microscopy support. We extend our gratitude to J. Wallenschus and D. Rangel
  Guerrero for technical assistance acquiring single-unit data and I. Gridchyn for
  help with single-unit clustering. Finally, we also thank B. Suter for discussions,
  A. Saunders, M. Jösch, and H. Monyer for critically reading earlier versions of
  the manuscript, C. Petersen for sharing clearing protocols, and the Scientific Service
  Units of ISTA for efficient support. This project was funded by the European Research
  Council (ERC) under the European Union’s Horizon 2020 research and innovation programme
  (ERC advanced grant No 692692 to P.J.) and the Fond zur Förderung der Wissenschaftlichen
  Forschung (Z 312-B27, Wittgenstein award for P.J. and I3600-B27 for J.G.D. and P.V.).
article_number: '4826'
article_processing_charge: No
article_type: original
author:
- first_name: Yoav
  full_name: Ben Simon, Yoav
  id: 43DF3136-F248-11E8-B48F-1D18A9856A87
  last_name: Ben Simon
- first_name: Karola
  full_name: Käfer, Karola
  id: 2DAA49AA-F248-11E8-B48F-1D18A9856A87
  last_name: Käfer
- first_name: Philipp
  full_name: Velicky, Philipp
  id: 39BDC62C-F248-11E8-B48F-1D18A9856A87
  last_name: Velicky
  orcid: 0000-0002-2340-7431
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
- first_name: Johann G
  full_name: Danzl, Johann G
  id: 42EFD3B6-F248-11E8-B48F-1D18A9856A87
  last_name: Danzl
  orcid: 0000-0001-8559-3973
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: Ben Simon Y, Käfer K, Velicky P, Csicsvari JL, Danzl JG, Jonas PM. A direct
    excitatory projection from entorhinal layer 6b neurons to the hippocampus contributes
    to spatial coding and memory. <i>Nature Communications</i>. 2022;13. doi:<a href="https://doi.org/10.1038/s41467-022-32559-8">10.1038/s41467-022-32559-8</a>
  apa: Ben Simon, Y., Käfer, K., Velicky, P., Csicsvari, J. L., Danzl, J. G., &#38;
    Jonas, P. M. (2022). A direct excitatory projection from entorhinal layer 6b neurons
    to the hippocampus contributes to spatial coding and memory. <i>Nature Communications</i>.
    Springer Nature. <a href="https://doi.org/10.1038/s41467-022-32559-8">https://doi.org/10.1038/s41467-022-32559-8</a>
  chicago: Ben Simon, Yoav, Karola Käfer, Philipp Velicky, Jozsef L Csicsvari, Johann
    G Danzl, and Peter M Jonas. “A Direct Excitatory Projection from Entorhinal Layer
    6b Neurons to the Hippocampus Contributes to Spatial Coding and Memory.” <i>Nature
    Communications</i>. Springer Nature, 2022. <a href="https://doi.org/10.1038/s41467-022-32559-8">https://doi.org/10.1038/s41467-022-32559-8</a>.
  ieee: Y. Ben Simon, K. Käfer, P. Velicky, J. L. Csicsvari, J. G. Danzl, and P. M.
    Jonas, “A direct excitatory projection from entorhinal layer 6b neurons to the
    hippocampus contributes to spatial coding and memory,” <i>Nature Communications</i>,
    vol. 13. Springer Nature, 2022.
  ista: Ben Simon Y, Käfer K, Velicky P, Csicsvari JL, Danzl JG, Jonas PM. 2022. A
    direct excitatory projection from entorhinal layer 6b neurons to the hippocampus
    contributes to spatial coding and memory. Nature Communications. 13, 4826.
  mla: Ben Simon, Yoav, et al. “A Direct Excitatory Projection from Entorhinal Layer
    6b Neurons to the Hippocampus Contributes to Spatial Coding and Memory.” <i>Nature
    Communications</i>, vol. 13, 4826, Springer Nature, 2022, doi:<a href="https://doi.org/10.1038/s41467-022-32559-8">10.1038/s41467-022-32559-8</a>.
  short: Y. Ben Simon, K. Käfer, P. Velicky, J.L. Csicsvari, J.G. Danzl, P.M. Jonas,
    Nature Communications 13 (2022).
date_created: 2022-08-24T08:25:50Z
date_published: 2022-08-16T00:00:00Z
date_updated: 2023-08-03T13:01:19Z
day: '16'
ddc:
- '570'
department:
- _id: JoCs
- _id: PeJo
- _id: JoDa
doi: 10.1038/s41467-022-32559-8
ec_funded: 1
external_id:
  isi:
  - '000841396400008'
file:
- access_level: open_access
  checksum: 405936d9e4d33625d80c093c9713a91f
  content_type: application/pdf
  creator: dernst
  date_created: 2022-08-26T11:51:40Z
  date_updated: 2022-08-26T11:51:40Z
  file_id: '11990'
  file_name: 2022_NatureCommunications_BenSimon.pdf
  file_size: 5910357
  relation: main_file
  success: 1
file_date_updated: 2022-08-26T11:51:40Z
has_accepted_license: '1'
intvolume: '        13'
isi: 1
keyword:
- General Physics and Astronomy
- General Biochemistry
- Genetics and Molecular Biology
- General Chemistry
- Multidisciplinary
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '692692'
  name: Biophysics and circuit function of a giant cortical glumatergic synapse
- _id: 265CB4D0-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I03600
  name: Optical control of synaptic function via adhesion molecules
- _id: 25C5A090-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00312
  name: The Wittgenstein Prize
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: A direct excitatory projection from entorhinal layer 6b neurons to the hippocampus
  contributes to spatial coding and memory
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 13
year: '2022'
...
---
_id: '12358'
abstract:
- lang: eng
  text: "The complex yarn structure of knitted and woven fabrics gives rise to both
    a mechanical and\r\nvisual complexity. The small-scale interactions of yarns colliding
    with and pulling on each\r\nother result in drastically different large-scale
    stretching and bending behavior, introducing\r\nanisotropy, curling, and more.
    While simulating cloth as individual yarns can reproduce this\r\ncomplexity and
    match the quality of real fabric, it may be too computationally expensive for\r\nlarge
    fabrics. On the other hand, continuum-based approaches do not need to discretize
    the\r\ncloth at a stitch-level, but it is non-trivial to find a material model
    that would replicate the\r\nlarge-scale behavior of yarn fabrics, and they discard
    the intricate visual detail. In this thesis,\r\nwe discuss three methods to try
    and bridge the gap between small-scale and large-scale yarn\r\nmechanics using
    numerical homogenization: fitting a continuum model to periodic yarn simulations,
    adding mechanics-aware yarn detail onto thin-shell simulations, and quantitatively\r\nfitting
    yarn parameters to physical measurements of real fabric.\r\nTo start, we present
    a method for animating yarn-level cloth effects using a thin-shell solver.\r\nWe
    first use a large number of periodic yarn-level simulations to build a model of
    the potential\r\nenergy density of the cloth, and then use it to compute forces
    in a thin-shell simulator. The\r\nresulting simulations faithfully reproduce expected
    effects like the stiffening of woven fabrics\r\nand the highly deformable nature
    and anisotropy of knitted fabrics at a fraction of the cost of\r\nfull yarn-level
    simulation.\r\nWhile our thin-shell simulations are able to capture large-scale
    yarn mechanics, they lack\r\nthe rich visual detail of yarn-level simulations.
    Therefore, we propose a method to animate\r\nyarn-level cloth geometry on top
    of an underlying deforming mesh in a mechanics-aware\r\nfashion in real time.
    Using triangle strains to interpolate precomputed yarn geometry, we are\r\nable
    to reproduce effects such as knit loops tightening under stretching at negligible
    cost.\r\nFinally, we introduce a methodology for inverse-modeling of yarn-level
    mechanics of cloth,\r\nbased on the mechanical response of fabrics in the real
    world. We compile a database from\r\nphysical tests of several knitted fabrics
    used in the textile industry spanning diverse physical\r\nproperties like stiffness,
    nonlinearity, and anisotropy. We then develop a system for approximating these
    mechanical responses with yarn-level cloth simulation, using homogenized\r\nshell
    models to speed up computation and adding some small-but-necessary extensions
    to\r\nyarn-level models used in computer graphics.\r\n"
acknowledged_ssus:
- _id: SSU
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Georg
  full_name: Sperl, Georg
  id: 4DD40360-F248-11E8-B48F-1D18A9856A87
  last_name: Sperl
citation:
  ama: 'Sperl G. Homogenizing yarn simulations: Large-scale mechanics, small-scale
    detail, and quantitative fitting. 2022. doi:<a href="https://doi.org/10.15479/at:ista:12103">10.15479/at:ista:12103</a>'
  apa: 'Sperl, G. (2022). <i>Homogenizing yarn simulations: Large-scale mechanics,
    small-scale detail, and quantitative fitting</i>. Institute of Science and Technology
    Austria. <a href="https://doi.org/10.15479/at:ista:12103">https://doi.org/10.15479/at:ista:12103</a>'
  chicago: 'Sperl, Georg. “Homogenizing Yarn Simulations: Large-Scale Mechanics, Small-Scale
    Detail, and Quantitative Fitting.” Institute of Science and Technology Austria,
    2022. <a href="https://doi.org/10.15479/at:ista:12103">https://doi.org/10.15479/at:ista:12103</a>.'
  ieee: 'G. Sperl, “Homogenizing yarn simulations: Large-scale mechanics, small-scale
    detail, and quantitative fitting,” Institute of Science and Technology Austria,
    2022.'
  ista: 'Sperl G. 2022. Homogenizing yarn simulations: Large-scale mechanics, small-scale
    detail, and quantitative fitting. Institute of Science and Technology Austria.'
  mla: 'Sperl, Georg. <i>Homogenizing Yarn Simulations: Large-Scale Mechanics, Small-Scale
    Detail, and Quantitative Fitting</i>. Institute of Science and Technology Austria,
    2022, doi:<a href="https://doi.org/10.15479/at:ista:12103">10.15479/at:ista:12103</a>.'
  short: 'G. Sperl, Homogenizing Yarn Simulations: Large-Scale Mechanics, Small-Scale
    Detail, and Quantitative Fitting, Institute of Science and Technology Austria,
    2022.'
date_created: 2023-01-24T10:49:46Z
date_published: 2022-09-22T00:00:00Z
date_updated: 2024-02-28T12:57:46Z
day: '22'
ddc:
- '000'
- '620'
degree_awarded: PhD
department:
- _id: GradSch
- _id: ChWo
doi: 10.15479/at:ista:12103
ec_funded: 1
file:
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language:
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month: '09'
oa: 1
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page: '138'
project:
- _id: 2533E772-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '638176'
  name: Efficient Simulation of Natural Phenomena at Extremely Large Scales
publication_identifier:
  isbn:
  - 978-3-99078-020-6
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
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  - id: '9818'
    relation: part_of_dissertation
    status: public
  - id: '8385'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Christopher J
  full_name: Wojtan, Christopher J
  id: 3C61F1D2-F248-11E8-B48F-1D18A9856A87
  last_name: Wojtan
  orcid: 0000-0001-6646-5546
title: 'Homogenizing yarn simulations: Large-scale mechanics, small-scale detail,
  and quantitative fitting'
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2022'
...
---
_id: '10816'
abstract:
- lang: eng
  text: Pattern separation is a fundamental brain computation that converts small
    differences in input patterns into large differences in output patterns. Several
    synaptic mechanisms of pattern separation have been proposed, including code expansion,
    inhibition and plasticity; however, which of these mechanisms play a role in the
    entorhinal cortex (EC)–dentate gyrus (DG)–CA3 circuit, a classical pattern separation
    circuit, remains unclear. Here we show that a biologically realistic, full-scale
    EC–DG–CA3 circuit model, including granule cells (GCs) and parvalbumin-positive
    inhibitory interneurons (PV+-INs) in the DG, is an efficient pattern separator.
    Both external gamma-modulated inhibition and internal lateral inhibition mediated
    by PV+-INs substantially contributed to pattern separation. Both local connectivity
    and fast signaling at GC–PV+-IN synapses were important for maximum effectiveness.
    Similarly, mossy fiber synapses with conditional detonator properties contributed
    to pattern separation. By contrast, perforant path synapses with Hebbian synaptic
    plasticity and direct EC–CA3 connection shifted the network towards pattern completion.
    Our results demonstrate that the specific properties of cells and synapses optimize
    higher-order computations in biological networks and might be useful to improve
    the deep learning capabilities of technical networks.
acknowledged_ssus:
- _id: SSU
acknowledgement: We thank A. Aertsen, N. Kopell, W. Maass, A. Roth, F. Stella and
  T. Vogels for critically reading earlier versions of the manuscript. We are grateful
  to F. Marr and C. Altmutter for excellent technical assistance, E. Kralli-Beller
  for manuscript editing, and the Scientific Service Units of IST Austria for efficient
  support. Finally, we thank T. Carnevale, L. Erdös, M. Hines, D. Nykamp and D. Schröder
  for useful discussions, and R. Friedrich and S. Wiechert for sharing unpublished
  data. This project received funding from the European Research Council (ERC) under
  the European Union’s Horizon 2020 research and innovation programme (grant agreement
  no. 692692, P.J.) and the Fond zur Förderung der Wissenschaftlichen Forschung (Z
  312-B27, Wittgenstein award to P.J. and P 31815 to S.J.G.).
article_processing_charge: No
article_type: original
author:
- first_name: José
  full_name: Guzmán, José
  id: 30CC5506-F248-11E8-B48F-1D18A9856A87
  last_name: Guzmán
  orcid: 0000-0003-2209-5242
- first_name: Alois
  full_name: Schlögl, Alois
  id: 45BF87EE-F248-11E8-B48F-1D18A9856A87
  last_name: Schlögl
  orcid: 0000-0002-5621-8100
- first_name: 'Claudia '
  full_name: 'Espinoza Martinez, Claudia '
  id: 31FFEE2E-F248-11E8-B48F-1D18A9856A87
  last_name: Espinoza Martinez
  orcid: 0000-0003-4710-2082
- first_name: Xiaomin
  full_name: Zhang, Xiaomin
  id: 423EC9C2-F248-11E8-B48F-1D18A9856A87
  last_name: Zhang
- first_name: Benjamin
  full_name: Suter, Benjamin
  id: 4952F31E-F248-11E8-B48F-1D18A9856A87
  last_name: Suter
  orcid: 0000-0002-9885-6936
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: Guzmán J, Schlögl A, Espinoza Martinez C, Zhang X, Suter B, Jonas PM. How connectivity
    rules and synaptic properties shape the efficacy of pattern separation in the
    entorhinal cortex–dentate gyrus–CA3 network. <i>Nature Computational Science</i>.
    2021;1(12):830-842. doi:<a href="https://doi.org/10.1038/s43588-021-00157-1">10.1038/s43588-021-00157-1</a>
  apa: Guzmán, J., Schlögl, A., Espinoza Martinez, C., Zhang, X., Suter, B., &#38;
    Jonas, P. M. (2021). How connectivity rules and synaptic properties shape the
    efficacy of pattern separation in the entorhinal cortex–dentate gyrus–CA3 network.
    <i>Nature Computational Science</i>. Springer Nature. <a href="https://doi.org/10.1038/s43588-021-00157-1">https://doi.org/10.1038/s43588-021-00157-1</a>
  chicago: Guzmán, José, Alois Schlögl, Claudia  Espinoza Martinez, Xiaomin Zhang,
    Benjamin Suter, and Peter M Jonas. “How Connectivity Rules and Synaptic Properties
    Shape the Efficacy of Pattern Separation in the Entorhinal Cortex–Dentate Gyrus–CA3
    Network.” <i>Nature Computational Science</i>. Springer Nature, 2021. <a href="https://doi.org/10.1038/s43588-021-00157-1">https://doi.org/10.1038/s43588-021-00157-1</a>.
  ieee: J. Guzmán, A. Schlögl, C. Espinoza Martinez, X. Zhang, B. Suter, and P. M.
    Jonas, “How connectivity rules and synaptic properties shape the efficacy of pattern
    separation in the entorhinal cortex–dentate gyrus–CA3 network,” <i>Nature Computational
    Science</i>, vol. 1, no. 12. Springer Nature, pp. 830–842, 2021.
  ista: Guzmán J, Schlögl A, Espinoza Martinez C, Zhang X, Suter B, Jonas PM. 2021.
    How connectivity rules and synaptic properties shape the efficacy of pattern separation
    in the entorhinal cortex–dentate gyrus–CA3 network. Nature Computational Science.
    1(12), 830–842.
  mla: Guzmán, José, et al. “How Connectivity Rules and Synaptic Properties Shape
    the Efficacy of Pattern Separation in the Entorhinal Cortex–Dentate Gyrus–CA3
    Network.” <i>Nature Computational Science</i>, vol. 1, no. 12, Springer Nature,
    2021, pp. 830–42, doi:<a href="https://doi.org/10.1038/s43588-021-00157-1">10.1038/s43588-021-00157-1</a>.
  short: J. Guzmán, A. Schlögl, C. Espinoza Martinez, X. Zhang, B. Suter, P.M. Jonas,
    Nature Computational Science 1 (2021) 830–842.
date_created: 2022-03-04T08:32:36Z
date_published: 2021-12-16T00:00:00Z
date_updated: 2023-08-10T22:30:10Z
day: '16'
ddc:
- '610'
department:
- _id: PeJo
doi: 10.1038/s43588-021-00157-1
ec_funded: 1
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issue: '12'
keyword:
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language:
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main_file_link:
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  url: https://www.biorxiv.org/content/10.1101/647800
month: '12'
oa: 1
oa_version: Submitted Version
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project:
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '692692'
  name: Biophysics and circuit function of a giant cortical glumatergic synapse
- _id: 25C5A090-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00312
  name: The Wittgenstein Prize
publication: Nature Computational Science
publication_identifier:
  issn:
  - 2662-8457
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - relation: press_release
    url: https://ista.ac.at/en/news/spot-the-difference/
  record:
  - id: '10110'
    relation: software
    status: public
scopus_import: '1'
status: public
title: How connectivity rules and synaptic properties shape the efficacy of pattern
  separation in the entorhinal cortex–dentate gyrus–CA3 network
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2021'
...
---
_id: '9329'
abstract:
- lang: eng
  text: "Background: To understand information coding in single neurons, it is necessary
    to analyze subthreshold synaptic events, action potentials (APs), and their interrelation
    in different behavioral states. However, detecting excitatory postsynaptic potentials
    (EPSPs) or currents (EPSCs) in behaving animals remains challenging, because of
    unfavorable signal-to-noise ratio, high frequency, fluctuating amplitude, and
    variable time course of synaptic events.\r\nNew method: We developed a method
    for synaptic event detection, termed MOD (Machine-learning Optimal-filtering Detection-procedure),
    which combines concepts of supervised machine learning and optimal Wiener filtering.
    Experts were asked to manually score short epochs of data. The algorithm was trained
    to obtain the optimal filter coefficients of a Wiener filter and the optimal detection
    threshold. Scored and unscored data were then processed with the optimal filter,
    and events were detected as peaks above threshold.\r\nResults: We challenged MOD
    with EPSP traces in vivo in mice during spatial navigation and EPSC traces in
    vitro in slices under conditions of enhanced transmitter release. The area under
    the curve (AUC) of the receiver operating characteristics (ROC) curve was, on
    average, 0.894 for in vivo and 0.969 for in vitro data sets, indicating high detection
    accuracy and efficiency.\r\nComparison with existing methods: When benchmarked
    using a (1 − AUC)−1 metric, MOD outperformed previous methods (template-fit, deconvolution,
    and Bayesian methods) by an average factor of 3.13 for in vivo data sets, but
    showed comparable (template-fit, deconvolution) or higher (Bayesian) computational
    efficacy.\r\nConclusions: MOD may become an important new tool for large-scale,
    real-time analysis of synaptic activity."
acknowledged_ssus:
- _id: SSU
acknowledgement: This project has received funding from the European Research Council
  (ERC) under the European Union’s Horizon 2020 research and innovation programme
  (grant agreement number 692692 to P.J.) and the Fond zur Förderung der Wissenschaftlichen
  Forschung (Z 312-B27, Wittgenstein award to P.J.). We thank Drs. Jozsef Csicsvari,
  Christoph Lampert, and Federico Stella for critically reading previous manuscript
  versions. We are also grateful to Drs. Josh Merel and Ben Shababo for their help
  with applying the Bayesian detection method to our data. We also thank Florian Marr
  for technical assistance, Eleftheria Kralli-Beller for manuscript editing, and the
  Scientific Service Units of IST Austria for efficient support.
article_number: '109125'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Xiaomin
  full_name: Zhang, Xiaomin
  id: 423EC9C2-F248-11E8-B48F-1D18A9856A87
  last_name: Zhang
- first_name: Alois
  full_name: Schlögl, Alois
  id: 45BF87EE-F248-11E8-B48F-1D18A9856A87
  last_name: Schlögl
  orcid: 0000-0002-5621-8100
- first_name: David H
  full_name: Vandael, David H
  id: 3AE48E0A-F248-11E8-B48F-1D18A9856A87
  last_name: Vandael
  orcid: 0000-0001-7577-1676
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: 'Zhang X, Schlögl A, Vandael DH, Jonas PM. MOD: A novel machine-learning optimal-filtering
    method for accurate and efficient detection of subthreshold synaptic events in
    vivo. <i>Journal of Neuroscience Methods</i>. 2021;357(6). doi:<a href="https://doi.org/10.1016/j.jneumeth.2021.109125">10.1016/j.jneumeth.2021.109125</a>'
  apa: 'Zhang, X., Schlögl, A., Vandael, D. H., &#38; Jonas, P. M. (2021). MOD: A
    novel machine-learning optimal-filtering method for accurate and efficient detection
    of subthreshold synaptic events in vivo. <i>Journal of Neuroscience Methods</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.jneumeth.2021.109125">https://doi.org/10.1016/j.jneumeth.2021.109125</a>'
  chicago: 'Zhang, Xiaomin, Alois Schlögl, David H Vandael, and Peter M Jonas. “MOD:
    A Novel Machine-Learning Optimal-Filtering Method for Accurate and Efficient Detection
    of Subthreshold Synaptic Events in Vivo.” <i>Journal of Neuroscience Methods</i>.
    Elsevier, 2021. <a href="https://doi.org/10.1016/j.jneumeth.2021.109125">https://doi.org/10.1016/j.jneumeth.2021.109125</a>.'
  ieee: 'X. Zhang, A. Schlögl, D. H. Vandael, and P. M. Jonas, “MOD: A novel machine-learning
    optimal-filtering method for accurate and efficient detection of subthreshold
    synaptic events in vivo,” <i>Journal of Neuroscience Methods</i>, vol. 357, no.
    6. Elsevier, 2021.'
  ista: 'Zhang X, Schlögl A, Vandael DH, Jonas PM. 2021. MOD: A novel machine-learning
    optimal-filtering method for accurate and efficient detection of subthreshold
    synaptic events in vivo. Journal of Neuroscience Methods. 357(6), 109125.'
  mla: 'Zhang, Xiaomin, et al. “MOD: A Novel Machine-Learning Optimal-Filtering Method
    for Accurate and Efficient Detection of Subthreshold Synaptic Events in Vivo.”
    <i>Journal of Neuroscience Methods</i>, vol. 357, no. 6, 109125, Elsevier, 2021,
    doi:<a href="https://doi.org/10.1016/j.jneumeth.2021.109125">10.1016/j.jneumeth.2021.109125</a>.'
  short: X. Zhang, A. Schlögl, D.H. Vandael, P.M. Jonas, Journal of Neuroscience Methods
    357 (2021).
date_created: 2021-04-18T22:01:39Z
date_published: 2021-03-09T00:00:00Z
date_updated: 2023-08-07T14:36:14Z
day: '09'
ddc:
- '570'
department:
- _id: PeJo
- _id: ScienComp
doi: 10.1016/j.jneumeth.2021.109125
ec_funded: 1
external_id:
  isi:
  - '000661088500005'
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month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '692692'
  name: Biophysics and circuit function of a giant cortical glumatergic synapse
- _id: 25C5A090-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00312
  name: The Wittgenstein Prize
publication: Journal of Neuroscience Methods
publication_identifier:
  eissn:
  - 1872-678X
  issn:
  - 0165-0270
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'MOD: A novel machine-learning optimal-filtering method for accurate and efficient
  detection of subthreshold synaptic events in vivo'
tmp:
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  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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  short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 357
year: '2021'
...
---
_id: '10199'
abstract:
- lang: eng
  text: The design and verification of concurrent systems remains an open challenge
    due to the non-determinism that arises from the inter-process communication. In
    particular, concurrent programs are notoriously difficult both to be written correctly
    and to be analyzed formally, as complex thread interaction has to be accounted
    for. The difficulties are further exacerbated when concurrent programs get executed
    on modern-day hardware, which contains various buffering and caching mechanisms
    for efficiency reasons. This causes further subtle non-determinism, which can
    often produce very unintuitive behavior of the concurrent programs. Model checking
    is at the forefront of tackling the verification problem, where the task is to
    decide, given as input a concurrent system and a desired property, whether the
    system satisfies the property. The inherent state-space explosion problem in model
    checking of concurrent systems causes naïve explicit methods not to scale, thus
    more inventive methods are required. One such method is stateless model checking
    (SMC), which explores in memory-efficient manner the program executions rather
    than the states of the program. State-of-the-art SMC is typically coupled with
    partial order reduction (POR) techniques, which argue that certain executions
    provably produce identical system behavior, thus limiting the amount of executions
    one needs to explore in order to cover all possible behaviors. Another method
    to tackle the state-space explosion is symbolic model checking, where the considered
    techniques operate on a succinct implicit representation of the input system rather
    than explicitly accessing the system. In this thesis we present new techniques
    for verification of concurrent systems. We present several novel POR methods for
    SMC of concurrent programs under various models of semantics, some of which account
    for write-buffering mechanisms. Additionally, we present novel algorithms for
    symbolic model checking of finite-state concurrent systems, where the desired
    property of the systems is to ensure a formally defined notion of fairness.
acknowledged_ssus:
- _id: SSU
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Viktor
  full_name: Toman, Viktor
  id: 3AF3DA7C-F248-11E8-B48F-1D18A9856A87
  last_name: Toman
  orcid: 0000-0001-9036-063X
citation:
  ama: Toman V. Improved verification techniques for concurrent systems. 2021. doi:<a
    href="https://doi.org/10.15479/at:ista:10199">10.15479/at:ista:10199</a>
  apa: Toman, V. (2021). <i>Improved verification techniques for concurrent systems</i>.
    Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:10199">https://doi.org/10.15479/at:ista:10199</a>
  chicago: Toman, Viktor. “Improved Verification Techniques for Concurrent Systems.”
    Institute of Science and Technology Austria, 2021. <a href="https://doi.org/10.15479/at:ista:10199">https://doi.org/10.15479/at:ista:10199</a>.
  ieee: V. Toman, “Improved verification techniques for concurrent systems,” Institute
    of Science and Technology Austria, 2021.
  ista: Toman V. 2021. Improved verification techniques for concurrent systems. Institute
    of Science and Technology Austria.
  mla: Toman, Viktor. <i>Improved Verification Techniques for Concurrent Systems</i>.
    Institute of Science and Technology Austria, 2021, doi:<a href="https://doi.org/10.15479/at:ista:10199">10.15479/at:ista:10199</a>.
  short: V. Toman, Improved Verification Techniques for Concurrent Systems, Institute
    of Science and Technology Austria, 2021.
date_created: 2021-10-29T20:09:01Z
date_published: 2021-10-31T00:00:00Z
date_updated: 2025-07-14T09:10:16Z
day: '31'
ddc:
- '000'
degree_awarded: PhD
department:
- _id: GradSch
- _id: KrCh
doi: 10.15479/at:ista:10199
ec_funded: 1
file:
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file_date_updated: 2021-11-09T09:00:50Z
has_accepted_license: '1'
keyword:
- concurrency
- verification
- model checking
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: '166'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 25F2ACDE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: S11402-N23
  name: Rigorous Systems Engineering
- _id: 25892FC0-B435-11E9-9278-68D0E5697425
  grant_number: ICT15-003
  name: Efficient Algorithms for Computer Aided Verification
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
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status: public
supervisor:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
title: Improved verification techniques for concurrent systems
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '9778'
abstract:
- lang: eng
  text: The hippocampal mossy fiber synapse is a key synapse of the trisynaptic circuit.
    Post-tetanic potentiation (PTP) is the most powerful form of plasticity at this
    synaptic connection. It is widely believed that mossy fiber PTP is an entirely
    presynaptic phenomenon, implying that PTP induction is input-specific, and requires
    neither activity of multiple inputs nor stimulation of postsynaptic neurons. To
    directly test cooperativity and associativity, we made paired recordings between
    single mossy fiber terminals and postsynaptic CA3 pyramidal neurons in rat brain
    slices. By stimulating non-overlapping mossy fiber inputs converging onto single
    CA3 neurons, we confirm that PTP is input-specific and non-cooperative. Unexpectedly,
    mossy fiber PTP exhibits anti-associative induction properties. EPSCs show only
    minimal PTP after combined pre- and postsynaptic high-frequency stimulation with
    intact postsynaptic Ca2+ signaling, but marked PTP in the absence of postsynaptic
    spiking and after suppression of postsynaptic Ca2+ signaling (10 mM EGTA). PTP
    is largely recovered by inhibitors of voltage-gated R- and L-type Ca2+ channels,
    group II mGluRs, and vacuolar-type H+-ATPase, suggesting the involvement of retrograde
    vesicular glutamate signaling. Transsynaptic regulation of PTP extends the repertoire
    of synaptic computations, implementing a brake on mossy fiber detonation and a
    “smart teacher” function of hippocampal mossy fiber synapses.
acknowledged_ssus:
- _id: SSU
acknowledgement: We thank Drs. Carolina Borges-Merjane and Jose Guzman for critically
  reading the manuscript, and Pablo Castillo for discussions. We are grateful to Alois
  Schlögl for help with analysis, Florian Marr for excellent technical assistance
  and cell reconstruction, Christina Altmutter for technical help, Eleftheria Kralli-Beller
  for manuscript editing, and the Scientific Service Units of IST Austria for support.
  This project received funding from the European Research Council (ERC) under the
  European Union’s Horizon 2020 research and innovation program (grant agreement No
  692692) and the Fond zur Förderung der Wissenschaftlichen Forschung (Z 312-B27,
  Wittgenstein award), both to P.J.
article_number: '2912'
article_processing_charge: No
article_type: original
author:
- first_name: David H
  full_name: Vandael, David H
  id: 3AE48E0A-F248-11E8-B48F-1D18A9856A87
  last_name: Vandael
  orcid: 0000-0001-7577-1676
- first_name: Yuji
  full_name: Okamoto, Yuji
  id: 3337E116-F248-11E8-B48F-1D18A9856A87
  last_name: Okamoto
  orcid: 0000-0003-0408-6094
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: Vandael DH, Okamoto Y, Jonas PM. Transsynaptic modulation of presynaptic short-term
    plasticity in hippocampal mossy fiber synapses. <i>Nature Communications</i>.
    2021;12(1). doi:<a href="https://doi.org/10.1038/s41467-021-23153-5">10.1038/s41467-021-23153-5</a>
  apa: Vandael, D. H., Okamoto, Y., &#38; Jonas, P. M. (2021). Transsynaptic modulation
    of presynaptic short-term plasticity in hippocampal mossy fiber synapses. <i>Nature
    Communications</i>. Springer. <a href="https://doi.org/10.1038/s41467-021-23153-5">https://doi.org/10.1038/s41467-021-23153-5</a>
  chicago: Vandael, David H, Yuji Okamoto, and Peter M Jonas. “Transsynaptic Modulation
    of Presynaptic Short-Term Plasticity in Hippocampal Mossy Fiber Synapses.” <i>Nature
    Communications</i>. Springer, 2021. <a href="https://doi.org/10.1038/s41467-021-23153-5">https://doi.org/10.1038/s41467-021-23153-5</a>.
  ieee: D. H. Vandael, Y. Okamoto, and P. M. Jonas, “Transsynaptic modulation of presynaptic
    short-term plasticity in hippocampal mossy fiber synapses,” <i>Nature Communications</i>,
    vol. 12, no. 1. Springer, 2021.
  ista: Vandael DH, Okamoto Y, Jonas PM. 2021. Transsynaptic modulation of presynaptic
    short-term plasticity in hippocampal mossy fiber synapses. Nature Communications.
    12(1), 2912.
  mla: Vandael, David H., et al. “Transsynaptic Modulation of Presynaptic Short-Term
    Plasticity in Hippocampal Mossy Fiber Synapses.” <i>Nature Communications</i>,
    vol. 12, no. 1, 2912, Springer, 2021, doi:<a href="https://doi.org/10.1038/s41467-021-23153-5">10.1038/s41467-021-23153-5</a>.
  short: D.H. Vandael, Y. Okamoto, P.M. Jonas, Nature Communications 12 (2021).
date_created: 2021-08-06T07:22:55Z
date_published: 2021-05-18T00:00:00Z
date_updated: 2023-08-10T14:16:16Z
day: '18'
ddc:
- '570'
department:
- _id: PeJo
doi: 10.1038/s41467-021-23153-5
ec_funded: 1
external_id:
  isi:
  - '000655481800014'
file:
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  checksum: 6036a8cdae95e1707c2a04d54e325ff4
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  creator: kschuh
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  date_updated: 2021-12-17T11:34:50Z
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file_date_updated: 2021-12-17T11:34:50Z
has_accepted_license: '1'
intvolume: '        12'
isi: 1
issue: '1'
keyword:
- general physics and astronomy
- general biochemistry
- genetics and molecular biology
- general chemistry
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '692692'
  name: Biophysics and circuit function of a giant cortical glumatergic synapse
- _id: 25C5A090-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00312
  name: The Wittgenstein Prize
publication: Nature Communications
publication_identifier:
  issn:
  - 2041-1723
publication_status: published
publisher: Springer
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/synaptic-transmission-not-a-one-way-street/
scopus_import: '1'
status: public
title: Transsynaptic modulation of presynaptic short-term plasticity in hippocampal
  mossy fiber synapses
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 12
year: '2021'
...
---
_id: '8001'
abstract:
- lang: eng
  text: Post-tetanic potentiation (PTP) is an attractive candidate mechanism for hippocampus-dependent
    short-term memory. Although PTP has a uniquely large magnitude at hippocampal
    mossy fiber-CA3 pyramidal neuron synapses, it is unclear whether it can be induced
    by natural activity and whether its lifetime is sufficient to support short-term
    memory. We combined in vivo recordings from granule cells (GCs), in vitro paired
    recordings from mossy fiber terminals and postsynaptic CA3 neurons, and “flash
    and freeze” electron microscopy. PTP was induced at single synapses and showed
    a low induction threshold adapted to sparse GC activity in vivo. PTP was mainly
    generated by enlargement of the readily releasable pool of synaptic vesicles,
    allowing multiplicative interaction with other plasticity forms. PTP was associated
    with an increase in the docked vesicle pool, suggesting formation of structural
    “pool engrams.” Absence of presynaptic activity extended the lifetime of the potentiation,
    enabling prolonged information storage in the hippocampal network.
acknowledged_ssus:
- _id: SSU
acknowledgement: This project received funding from the European Research Council
  (ERC) under the European Union Horizon 2020 Research and Innovation Program (grant
  agreement 692692 to P.J.) and the Fond zur Förderung der Wissenschaftlichen Forschung
  ( Z 312-B27 , Wittgenstein award to P.J. and V 739-B27 to C.B.-M.). We thank Drs.
  Jozsef Csicsvari, Jose Guzman, Erwin Neher, and Ryuichi Shigemoto for commenting
  on earlier versions of the manuscript. We are grateful to Walter Kaufmann, Daniel
  Gütl, and Vanessa Zheden for EM training; Alois Schlögl for programming; Florian
  Marr for excellent technical assistance and cell reconstruction; Christina Altmutter
  for technical help; Eleftheria Kralli-Beller for manuscript editing; Taija Makinen
  for providing the Prox1-CreERT2 mouse line; and the Scientific Service Units of
  IST Austria for support.
article_processing_charge: No
article_type: original
author:
- first_name: David H
  full_name: Vandael, David H
  id: 3AE48E0A-F248-11E8-B48F-1D18A9856A87
  last_name: Vandael
  orcid: 0000-0001-7577-1676
- first_name: Carolina
  full_name: Borges Merjane, Carolina
  id: 4305C450-F248-11E8-B48F-1D18A9856A87
  last_name: Borges Merjane
  orcid: 0000-0003-0005-401X
- first_name: Xiaomin
  full_name: Zhang, Xiaomin
  id: 423EC9C2-F248-11E8-B48F-1D18A9856A87
  last_name: Zhang
- first_name: Peter M
  full_name: Jonas, Peter M
  id: 353C1B58-F248-11E8-B48F-1D18A9856A87
  last_name: Jonas
  orcid: 0000-0001-5001-4804
citation:
  ama: Vandael DH, Borges Merjane C, Zhang X, Jonas PM. Short-term plasticity at hippocampal
    mossy fiber synapses is induced by natural activity patterns and associated with
    vesicle pool engram formation. <i>Neuron</i>. 2020;107(3):509-521. doi:<a href="https://doi.org/10.1016/j.neuron.2020.05.013">10.1016/j.neuron.2020.05.013</a>
  apa: Vandael, D. H., Borges Merjane, C., Zhang, X., &#38; Jonas, P. M. (2020). Short-term
    plasticity at hippocampal mossy fiber synapses is induced by natural activity
    patterns and associated with vesicle pool engram formation. <i>Neuron</i>. Elsevier.
    <a href="https://doi.org/10.1016/j.neuron.2020.05.013">https://doi.org/10.1016/j.neuron.2020.05.013</a>
  chicago: Vandael, David H, Carolina Borges Merjane, Xiaomin Zhang, and Peter M Jonas.
    “Short-Term Plasticity at Hippocampal Mossy Fiber Synapses Is Induced by Natural
    Activity Patterns and Associated with Vesicle Pool Engram Formation.” <i>Neuron</i>.
    Elsevier, 2020. <a href="https://doi.org/10.1016/j.neuron.2020.05.013">https://doi.org/10.1016/j.neuron.2020.05.013</a>.
  ieee: D. H. Vandael, C. Borges Merjane, X. Zhang, and P. M. Jonas, “Short-term plasticity
    at hippocampal mossy fiber synapses is induced by natural activity patterns and
    associated with vesicle pool engram formation,” <i>Neuron</i>, vol. 107, no. 3.
    Elsevier, pp. 509–521, 2020.
  ista: Vandael DH, Borges Merjane C, Zhang X, Jonas PM. 2020. Short-term plasticity
    at hippocampal mossy fiber synapses is induced by natural activity patterns and
    associated with vesicle pool engram formation. Neuron. 107(3), 509–521.
  mla: Vandael, David H., et al. “Short-Term Plasticity at Hippocampal Mossy Fiber
    Synapses Is Induced by Natural Activity Patterns and Associated with Vesicle Pool
    Engram Formation.” <i>Neuron</i>, vol. 107, no. 3, Elsevier, 2020, pp. 509–21,
    doi:<a href="https://doi.org/10.1016/j.neuron.2020.05.013">10.1016/j.neuron.2020.05.013</a>.
  short: D.H. Vandael, C. Borges Merjane, X. Zhang, P.M. Jonas, Neuron 107 (2020)
    509–521.
date_created: 2020-06-22T13:29:05Z
date_published: 2020-08-05T00:00:00Z
date_updated: 2023-08-22T07:45:25Z
day: '05'
ddc:
- '570'
department:
- _id: PeJo
doi: 10.1016/j.neuron.2020.05.013
ec_funded: 1
external_id:
  isi:
  - '000556135600004'
  pmid:
  - '32492366'
file:
- access_level: open_access
  checksum: 4030b2be0c9625d54694a1e9fb00305e
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  date_created: 2020-11-25T11:23:02Z
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  file_size: 4390833
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  success: 1
file_date_updated: 2020-11-25T11:23:02Z
has_accepted_license: '1'
intvolume: '       107'
isi: 1
issue: '3'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 509-521
pmid: 1
project:
- _id: 25B7EB9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '692692'
  name: Biophysics and circuit function of a giant cortical glumatergic synapse
- _id: 25C5A090-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00312
  name: The Wittgenstein Prize
- _id: 2696E7FE-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: V00739
  name: Structural plasticity at mossy fiber-CA3 synapses
publication: Neuron
publication_identifier:
  eissn:
  - '10974199'
  issn:
  - 0896-6273
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/possible-physical-trace-of-short-term-memory-found/
scopus_import: '1'
status: public
title: Short-term plasticity at hippocampal mossy fiber synapses is induced by natural
  activity patterns and associated with vesicle pool engram formation
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2020'
...
---
_id: '8386'
abstract:
- lang: eng
  text: "Form versus function is a long-standing debate in various design-related
    fields, such as architecture as well as graphic and industrial design. A good
    design that balances form and function often requires considerable human effort
    and collaboration among experts from different professional fields. Computational
    design tools provide a new paradigm for designing functional objects. In computational
    design, form and function are represented as mathematical\r\nquantities, with
    the help of numerical and combinatorial algorithms, they can assist even novice
    users in designing versatile models that exhibit their desired functionality.
    This thesis presents three disparate research studies on the computational design
    of functional objects: The appearance of 3d print—we optimize the volumetric material
    distribution for faithfully replicating colored surface texture in 3d printing;
    the dynamic motion of mechanical structures—\r\nour design system helps the novice
    user to retarget various mechanical templates with different functionality to
    complex 3d shapes; and a more abstract functionality, multistability—our algorithm
    automatically generates models that exhibit multiple stable target poses. For
    each of these cases, our computational design tools not only ensure the functionality
    of the results but also permit the user aesthetic freedom over the form. Moreover,
    fabrication constraints\r\nwere taken into account, which allow for the immediate
    creation of physical realization via 3D printing or laser cutting."
acknowledged_ssus:
- _id: SSU
acknowledgement: The research in this thesis has received funding from the European
  Union’s Horizon 2020 research and innovation programme, under the Marie Skłodowska-Curie
  grant agreement No 642841 (DISTRO) and the European Research Council grant agreement
  No 715767 (MATERIALIZABLE). All the research projects in this thesis were also supported
  by Scientific Service Units (SSUs) at IST Austria.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Ran
  full_name: Zhang, Ran
  id: 4DDBCEB0-F248-11E8-B48F-1D18A9856A87
  last_name: Zhang
  orcid: 0000-0002-3808-281X
citation:
  ama: Zhang R. Structure-aware computational design and its application to 3D printable
    volume scattering, mechanism, and multistability. 2020. doi:<a href="https://doi.org/10.15479/AT:ISTA:8386">10.15479/AT:ISTA:8386</a>
  apa: Zhang, R. (2020). <i>Structure-aware computational design and its application
    to 3D printable volume scattering, mechanism, and multistability</i>. Institute
    of Science and Technology Austria. <a href="https://doi.org/10.15479/AT:ISTA:8386">https://doi.org/10.15479/AT:ISTA:8386</a>
  chicago: Zhang, Ran. “Structure-Aware Computational Design and Its Application to
    3D Printable Volume Scattering, Mechanism, and Multistability.” Institute of Science
    and Technology Austria, 2020. <a href="https://doi.org/10.15479/AT:ISTA:8386">https://doi.org/10.15479/AT:ISTA:8386</a>.
  ieee: R. Zhang, “Structure-aware computational design and its application to 3D
    printable volume scattering, mechanism, and multistability,” Institute of Science
    and Technology Austria, 2020.
  ista: Zhang R. 2020. Structure-aware computational design and its application to
    3D printable volume scattering, mechanism, and multistability. Institute of Science
    and Technology Austria.
  mla: Zhang, Ran. <i>Structure-Aware Computational Design and Its Application to
    3D Printable Volume Scattering, Mechanism, and Multistability</i>. Institute of
    Science and Technology Austria, 2020, doi:<a href="https://doi.org/10.15479/AT:ISTA:8386">10.15479/AT:ISTA:8386</a>.
  short: R. Zhang, Structure-Aware Computational Design and Its Application to 3D
    Printable Volume Scattering, Mechanism, and Multistability, Institute of Science
    and Technology Austria, 2020.
date_created: 2020-09-14T01:04:53Z
date_published: 2020-09-14T00:00:00Z
date_updated: 2023-09-22T09:49:31Z
day: '14'
ddc:
- '003'
degree_awarded: PhD
department:
- _id: BeBi
doi: 10.15479/AT:ISTA:8386
ec_funded: 1
file:
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  checksum: edcf578b6e1c9b0dd81ff72d319b66ba
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  date_created: 2020-09-14T01:02:59Z
  date_updated: 2020-09-14T12:18:43Z
  file_id: '8388'
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  creator: rzhang
  date_created: 2020-09-15T12:51:53Z
  date_updated: 2020-09-15T12:51:53Z
  file_id: '8396'
  file_name: PhD_thesis_Ran Zhang_20200915.pdf
  file_size: 161385316
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  success: 1
file_date_updated: 2020-09-15T12:51:53Z
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '148'
project:
- _id: 2508E324-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '642841'
  name: Distributed 3D Object Design
- _id: 24F9549A-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '715767'
  name: 'MATERIALIZABLE: Intelligent fabrication-oriented Computational Design and
    Modeling'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '486'
    relation: part_of_dissertation
    status: public
  - id: '1002'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Bernd
  full_name: Bickel, Bernd
  id: 49876194-F248-11E8-B48F-1D18A9856A87
  last_name: Bickel
  orcid: 0000-0001-6511-9385
title: Structure-aware computational design and its application to 3D printable volume
  scattering, mechanism, and multistability
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2020'
...
---
_id: '9750'
abstract:
- lang: eng
  text: Tension of the actomyosin cell cortex plays a key role in determining cell-cell
    contact growth and size. The level of cortical tension outside of the cell-cell
    contact, when pulling at the contact edge, scales with the total size to which
    a cell-cell contact can grow1,2. Here we show in zebrafish primary germ layer
    progenitor cells that this monotonic relationship only applies to a narrow range
    of cortical tension increase, and that above a critical threshold, contact size
    inversely scales with cortical tension. This switch from cortical tension increasing
    to decreasing progenitor cell-cell contact size is caused by cortical tension
    promoting E-cadherin anchoring to the actomyosin cytoskeleton, thereby increasing
    clustering and stability of E-cadherin at the contact. Once tension-mediated E-cadherin
    stabilization at the contact exceeds a critical threshold level, the rate by which
    the contact expands in response to pulling forces from the cortex sharply drops,
    leading to smaller contacts at physiologically relevant timescales of contact
    formation. Thus, the activity of cortical tension in expanding cell-cell contact
    size is limited by tension stabilizing E-cadherin-actin complexes at the contact.
acknowledged_ssus:
- _id: Bio
- _id: EM-Fac
- _id: SSU
acknowledgement: We would like to thank Edouard Hannezo for discussions, Shayan Shami
  Pour and Daniel Capek for help with data analysis, Vanessa Barone and other members
  of the Heisenberg laboratory for thoughtful discussions and comments on the manuscript.
  We also thank Jack Merrin for preparing the microwells, and the Scientific Service
  Units at IST Austria, specifically Bioimaging and Electron Microscopy, and the Zebrafish
  Facility for continuous support. We acknowledge Hitoshi Morita for the kind gift
  of VinculinB-GFP plasmid. This research was supported by an ERC Advanced Grant (MECSPEC)
  to C.-P.H, EMBO Long Term grant (ALTF 187-2013) to M.S and IST Fellow Marie-Curie
  COFUND No. P_IST_EU01 to J.S.
article_processing_charge: No
author:
- first_name: Jana
  full_name: Slovakova, Jana
  id: 30F3F2F0-F248-11E8-B48F-1D18A9856A87
  last_name: Slovakova
- first_name: Mateusz K
  full_name: Sikora, Mateusz K
  id: 2F74BCDE-F248-11E8-B48F-1D18A9856A87
  last_name: Sikora
- first_name: Silvia
  full_name: Caballero Mancebo, Silvia
  id: 2F1E1758-F248-11E8-B48F-1D18A9856A87
  last_name: Caballero Mancebo
  orcid: 0000-0002-5223-3346
- first_name: Gabriel
  full_name: Krens, Gabriel
  id: 2B819732-F248-11E8-B48F-1D18A9856A87
  last_name: Krens
  orcid: 0000-0003-4761-5996
- first_name: Walter
  full_name: Kaufmann, Walter
  id: 3F99E422-F248-11E8-B48F-1D18A9856A87
  last_name: Kaufmann
  orcid: 0000-0001-9735-5315
- first_name: Karla
  full_name: Huljev, Karla
  id: 44C6F6A6-F248-11E8-B48F-1D18A9856A87
  last_name: Huljev
- first_name: Carl-Philipp J
  full_name: Heisenberg, Carl-Philipp J
  id: 39427864-F248-11E8-B48F-1D18A9856A87
  last_name: Heisenberg
  orcid: 0000-0002-0912-4566
citation:
  ama: Slovakova J, Sikora MK, Caballero Mancebo S, et al. Tension-dependent stabilization
    of E-cadherin limits cell-cell contact expansion. <i>bioRxiv</i>. 2020. doi:<a
    href="https://doi.org/10.1101/2020.11.20.391284">10.1101/2020.11.20.391284</a>
  apa: Slovakova, J., Sikora, M. K., Caballero Mancebo, S., Krens, G., Kaufmann, W.,
    Huljev, K., &#38; Heisenberg, C.-P. J. (2020). Tension-dependent stabilization
    of E-cadherin limits cell-cell contact expansion. <i>bioRxiv</i>. Cold Spring
    Harbor Laboratory. <a href="https://doi.org/10.1101/2020.11.20.391284">https://doi.org/10.1101/2020.11.20.391284</a>
  chicago: Slovakova, Jana, Mateusz K Sikora, Silvia Caballero Mancebo, Gabriel Krens,
    Walter Kaufmann, Karla Huljev, and Carl-Philipp J Heisenberg. “Tension-Dependent
    Stabilization of E-Cadherin Limits Cell-Cell Contact Expansion.” <i>BioRxiv</i>.
    Cold Spring Harbor Laboratory, 2020. <a href="https://doi.org/10.1101/2020.11.20.391284">https://doi.org/10.1101/2020.11.20.391284</a>.
  ieee: J. Slovakova <i>et al.</i>, “Tension-dependent stabilization of E-cadherin
    limits cell-cell contact expansion,” <i>bioRxiv</i>. Cold Spring Harbor Laboratory,
    2020.
  ista: Slovakova J, Sikora MK, Caballero Mancebo S, Krens G, Kaufmann W, Huljev K,
    Heisenberg C-PJ. 2020. Tension-dependent stabilization of E-cadherin limits cell-cell
    contact expansion. bioRxiv, <a href="https://doi.org/10.1101/2020.11.20.391284">10.1101/2020.11.20.391284</a>.
  mla: Slovakova, Jana, et al. “Tension-Dependent Stabilization of E-Cadherin Limits
    Cell-Cell Contact Expansion.” <i>BioRxiv</i>, Cold Spring Harbor Laboratory, 2020,
    doi:<a href="https://doi.org/10.1101/2020.11.20.391284">10.1101/2020.11.20.391284</a>.
  short: J. Slovakova, M.K. Sikora, S. Caballero Mancebo, G. Krens, W. Kaufmann, K.
    Huljev, C.-P.J. Heisenberg, BioRxiv (2020).
date_created: 2021-07-29T11:29:50Z
date_published: 2020-11-20T00:00:00Z
date_updated: 2024-03-25T23:30:10Z
day: '20'
department:
- _id: CaHe
- _id: EM-Fac
- _id: Bio
doi: 10.1101/2020.11.20.391284
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1101/2020.11.20.391284
month: '11'
oa: 1
oa_version: Preprint
page: '41'
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 260F1432-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '742573'
  name: Interaction and feedback between cell mechanics and fate specification in
    vertebrate gastrulation
- _id: 2521E28E-B435-11E9-9278-68D0E5697425
  grant_number: 187-2013
  name: Modulation of adhesion function in cell-cell contact formation by cortical
    tension
publication: bioRxiv
publication_status: published
publisher: Cold Spring Harbor Laboratory
related_material:
  record:
  - id: '10766'
    relation: later_version
    status: public
  - id: '9623'
    relation: dissertation_contains
    status: public
status: public
title: Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2020'
...
---
_id: '7186'
abstract:
- lang: eng
  text: "Tissue morphogenesis in developmental or physiological processes is regulated
    by molecular\r\nand mechanical signals. While the molecular signaling cascades
    are increasingly well\r\ndescribed, the mechanical signals affecting tissue shape
    changes have only recently been\r\nstudied in greater detail. To gain more insight
    into the mechanochemical and biophysical\r\nbasis of an epithelial spreading process
    (epiboly) in early zebrafish development, we studied\r\ncell-cell junction formation
    and actomyosin network dynamics at the boundary between\r\nsurface layer epithelial
    cells (EVL) and the yolk syncytial layer (YSL). During zebrafish epiboly,\r\nthe
    cell mass sitting on top of the yolk cell spreads to engulf the yolk cell by the
    end of\r\ngastrulation. It has been previously shown that an actomyosin ring residing
    within the YSL\r\npulls on the EVL tissue through a cable-constriction and a flow-friction
    motor, thereby\r\ndragging the tissue vegetal wards. Pulling forces are likely
    transmitted from the YSL\r\nactomyosin ring to EVL cells; however, the nature
    and formation of the junctional structure\r\nmediating this process has not been
    well described so far. Therefore, our main aim was to\r\ndetermine the nature,
    dynamics and potential function of the EVL-YSL junction during this\r\nepithelial
    tissue spreading. Specifically, we show that the EVL-YSL junction is a\r\nmechanosensitive
    structure, predominantly made of tight junction (TJ) proteins. The process\r\nof
    TJ mechanosensation depends on the retrograde flow of non-junctional, phase-separated\r\nZonula
    Occludens-1 (ZO-1) protein clusters towards the EVL-YSL boundary. Interestingly,
    we\r\ncould demonstrate that ZO-1 is present in a non-junctional pool on the surface
    of the yolk\r\ncell, and ZO-1 undergoes a phase separation process that likely
    renders the protein\r\nresponsive to flows. These flows are directed towards the
    junction and mediate proper\r\ntension-dependent recruitment of ZO-1. Upon reaching
    the EVL-YSL junction ZO-1 gets\r\nincorporated into the junctional pool mediated
    through its direct actin-binding domain.\r\nWhen the non-junctional pool and/or
    ZO-1 direct actin binding is absent, TJs fail in their\r\nproper mechanosensitive
    responses resulting in slower tissue spreading. We could further\r\ndemonstrate
    that depletion of ZO proteins within the YSL results in diminished actomyosin\r\nring
    formation. This suggests that a mechanochemical feedback loop is at work during\r\nzebrafish
    epiboly: ZO proteins help in proper actomyosin ring formation and actomyosin\r\ncontractility
    and flows positively influence ZO-1 junctional recruitment. Finally, such a\r\nmesoscale
    polarization process mediated through the flow of phase-separated protein\r\nclusters
    might have implications for other processes such as immunological synapse\r\nformation,
    C. elegans zygote polarization and wound healing."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
- _id: EM-Fac
- _id: SSU
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Cornelia
  full_name: Schwayer, Cornelia
  id: 3436488C-F248-11E8-B48F-1D18A9856A87
  last_name: Schwayer
  orcid: 0000-0001-5130-2226
citation:
  ama: Schwayer C. Mechanosensation of tight junctions depends on ZO-1 phase separation
    and flow. 2019. doi:<a href="https://doi.org/10.15479/AT:ISTA:7186">10.15479/AT:ISTA:7186</a>
  apa: Schwayer, C. (2019). <i>Mechanosensation of tight junctions depends on ZO-1
    phase separation and flow</i>. Institute of Science and Technology Austria. <a
    href="https://doi.org/10.15479/AT:ISTA:7186">https://doi.org/10.15479/AT:ISTA:7186</a>
  chicago: Schwayer, Cornelia. “Mechanosensation of Tight Junctions Depends on ZO-1
    Phase Separation and Flow.” Institute of Science and Technology Austria, 2019.
    <a href="https://doi.org/10.15479/AT:ISTA:7186">https://doi.org/10.15479/AT:ISTA:7186</a>.
  ieee: C. Schwayer, “Mechanosensation of tight junctions depends on ZO-1 phase separation
    and flow,” Institute of Science and Technology Austria, 2019.
  ista: Schwayer C. 2019. Mechanosensation of tight junctions depends on ZO-1 phase
    separation and flow. Institute of Science and Technology Austria.
  mla: Schwayer, Cornelia. <i>Mechanosensation of Tight Junctions Depends on ZO-1
    Phase Separation and Flow</i>. Institute of Science and Technology Austria, 2019,
    doi:<a href="https://doi.org/10.15479/AT:ISTA:7186">10.15479/AT:ISTA:7186</a>.
  short: C. Schwayer, Mechanosensation of Tight Junctions Depends on ZO-1 Phase Separation
    and Flow, Institute of Science and Technology Austria, 2019.
date_created: 2019-12-16T14:26:14Z
date_published: 2019-12-16T00:00:00Z
date_updated: 2023-09-07T12:56:42Z
day: '16'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: CaHe
doi: 10.15479/AT:ISTA:7186
file:
- access_level: closed
  checksum: 585583c1c875c5d9525703a539668a7c
  content_type: application/zip
  creator: cschwayer
  date_created: 2019-12-19T15:18:11Z
  date_updated: 2020-07-14T12:47:52Z
  file_id: '7194'
  file_name: DocumentSourceFiles.zip
  file_size: 19431292
  relation: source_file
- access_level: open_access
  checksum: 9b9b24351514948d27cec659e632e2cd
  content_type: application/pdf
  creator: cschwayer
  date_created: 2019-12-19T15:19:21Z
  date_updated: 2020-07-14T12:47:52Z
  file_id: '7195'
  file_name: Thesis_CS_final.pdf
  file_size: 19226428
  relation: main_file
file_date_updated: 2020-07-14T12:47:52Z
has_accepted_license: '1'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: '107'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '1096'
    relation: dissertation_contains
    status: public
  - id: '7001'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Carl-Philipp J
  full_name: Heisenberg, Carl-Philipp J
  id: 39427864-F248-11E8-B48F-1D18A9856A87
  last_name: Heisenberg
  orcid: 0000-0002-0912-4566
title: Mechanosensation of tight junctions depends on ZO-1 phase separation and flow
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2019'
...
---
_id: '6328'
abstract:
- lang: eng
  text: During metazoan development, immune surveillance and cancer dissemination,
    cells migrate in complex three-dimensional microenvironments1,2,3. These spaces
    are crowded by cells and extracellular matrix, generating mazes with differently
    sized gaps that are typically smaller than the diameter of the migrating cell4,5.
    Most mesenchymal and epithelial cells and some—but not all—cancer cells actively
    generate their migratory path using pericellular tissue proteolysis6. By contrast,
    amoeboid cells such as leukocytes use non-destructive strategies of locomotion7,
    raising the question how these extremely fast cells navigate through dense tissues.
    Here we reveal that leukocytes sample their immediate vicinity for large pore
    sizes, and are thereby able to choose the path of least resistance. This allows
    them to circumnavigate local obstacles while effectively following global directional
    cues such as chemotactic gradients. Pore-size discrimination is facilitated by
    frontward positioning of the nucleus, which enables the cells to use their bulkiest
    compartment as a mechanical gauge. Once the nucleus and the closely associated
    microtubule organizing centre pass the largest pore, cytoplasmic protrusions still
    lingering in smaller pores are retracted. These retractions are coordinated by
    dynamic microtubules; when microtubules are disrupted, migrating cells lose coherence
    and frequently fragment into migratory cytoplasmic pieces. As nuclear positioning
    in front of the microtubule organizing centre is a typical feature of amoeboid
    migration, our findings link the fundamental organization of cellular polarity
    to the strategy of locomotion.
acknowledged_ssus:
- _id: SSU
article_processing_charge: No
article_type: letter_note
author:
- first_name: Jörg
  full_name: Renkawitz, Jörg
  id: 3F0587C8-F248-11E8-B48F-1D18A9856A87
  last_name: Renkawitz
  orcid: 0000-0003-2856-3369
- first_name: Aglaja
  full_name: Kopf, Aglaja
  id: 31DAC7B6-F248-11E8-B48F-1D18A9856A87
  last_name: Kopf
  orcid: 0000-0002-2187-6656
- first_name: Julian A
  full_name: Stopp, Julian A
  id: 489E3F00-F248-11E8-B48F-1D18A9856A87
  last_name: Stopp
- first_name: Ingrid
  full_name: de Vries, Ingrid
  id: 4C7D837E-F248-11E8-B48F-1D18A9856A87
  last_name: de Vries
- first_name: Meghan K.
  full_name: Driscoll, Meghan K.
  last_name: Driscoll
- first_name: Jack
  full_name: Merrin, Jack
  id: 4515C308-F248-11E8-B48F-1D18A9856A87
  last_name: Merrin
  orcid: 0000-0001-5145-4609
- first_name: Robert
  full_name: Hauschild, Robert
  id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
  last_name: Hauschild
  orcid: 0000-0001-9843-3522
- first_name: Erik S.
  full_name: Welf, Erik S.
  last_name: Welf
- first_name: Gaudenz
  full_name: Danuser, Gaudenz
  last_name: Danuser
- first_name: Reto
  full_name: Fiolka, Reto
  last_name: Fiolka
- first_name: Michael K
  full_name: Sixt, Michael K
  id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
  last_name: Sixt
  orcid: 0000-0002-6620-9179
citation:
  ama: Renkawitz J, Kopf A, Stopp JA, et al. Nuclear positioning facilitates amoeboid
    migration along the path of least resistance. <i>Nature</i>. 2019;568:546-550.
    doi:<a href="https://doi.org/10.1038/s41586-019-1087-5">10.1038/s41586-019-1087-5</a>
  apa: Renkawitz, J., Kopf, A., Stopp, J. A., de Vries, I., Driscoll, M. K., Merrin,
    J., … Sixt, M. K. (2019). Nuclear positioning facilitates amoeboid migration along
    the path of least resistance. <i>Nature</i>. Springer Nature. <a href="https://doi.org/10.1038/s41586-019-1087-5">https://doi.org/10.1038/s41586-019-1087-5</a>
  chicago: Renkawitz, Jörg, Aglaja Kopf, Julian A Stopp, Ingrid de Vries, Meghan K.
    Driscoll, Jack Merrin, Robert Hauschild, et al. “Nuclear Positioning Facilitates
    Amoeboid Migration along the Path of Least Resistance.” <i>Nature</i>. Springer
    Nature, 2019. <a href="https://doi.org/10.1038/s41586-019-1087-5">https://doi.org/10.1038/s41586-019-1087-5</a>.
  ieee: J. Renkawitz <i>et al.</i>, “Nuclear positioning facilitates amoeboid migration
    along the path of least resistance,” <i>Nature</i>, vol. 568. Springer Nature,
    pp. 546–550, 2019.
  ista: Renkawitz J, Kopf A, Stopp JA, de Vries I, Driscoll MK, Merrin J, Hauschild
    R, Welf ES, Danuser G, Fiolka R, Sixt MK. 2019. Nuclear positioning facilitates
    amoeboid migration along the path of least resistance. Nature. 568, 546–550.
  mla: Renkawitz, Jörg, et al. “Nuclear Positioning Facilitates Amoeboid Migration
    along the Path of Least Resistance.” <i>Nature</i>, vol. 568, Springer Nature,
    2019, pp. 546–50, doi:<a href="https://doi.org/10.1038/s41586-019-1087-5">10.1038/s41586-019-1087-5</a>.
  short: J. Renkawitz, A. Kopf, J.A. Stopp, I. de Vries, M.K. Driscoll, J. Merrin,
    R. Hauschild, E.S. Welf, G. Danuser, R. Fiolka, M.K. Sixt, Nature 568 (2019) 546–550.
date_created: 2019-04-17T06:52:28Z
date_published: 2019-04-25T00:00:00Z
date_updated: 2024-03-25T23:30:22Z
day: '25'
department:
- _id: MiSi
- _id: NanoFab
- _id: Bio
doi: 10.1038/s41586-019-1087-5
ec_funded: 1
external_id:
  isi:
  - '000465594200050'
  pmid:
  - '30944468'
intvolume: '       568'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7217284/
month: '04'
oa: 1
oa_version: Submitted Version
page: 546-550
pmid: 1
project:
- _id: 25A603A2-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281556'
  name: Cytoskeletal force generation and force transduction of migrating leukocytes
    (EU)
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '724373'
  name: Cellular navigation along spatial gradients
- _id: 265FAEBA-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: W01250-B20
  name: Nano-Analytics of Cellular Systems
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 25A48D24-B435-11E9-9278-68D0E5697425
  grant_number: ALTF 1396-2014
  name: Molecular and system level view of immune cell migration
publication: Nature
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/leukocytes-use-their-nucleus-as-a-ruler-to-choose-path-of-least-resistance/
  record:
  - id: '14697'
    relation: dissertation_contains
    status: public
  - id: '6891'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Nuclear positioning facilitates amoeboid migration along the path of least
  resistance
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 568
year: '2019'
...
---
_id: '308'
abstract:
- lang: eng
  text: Migrating cells penetrate tissue barriers during development, inflammatory
    responses, and tumor metastasis. We study if migration in vivo in such three-dimensionally
    confined environments requires changes in the mechanical properties of the surrounding
    cells using embryonic Drosophila melanogaster hemocytes, also called macrophages,
    as a model. We find that macrophage invasion into the germband through transient
    separation of the apposing ectoderm and mesoderm requires cell deformations and
    reductions in apical tension in the ectoderm. Interestingly, the genetic pathway
    governing these mechanical shifts acts downstream of the only known tumor necrosis
    factor superfamily member in Drosophila, Eiger, and its receptor, Grindelwald.
    Eiger-Grindelwald signaling reduces levels of active Myosin in the germband ectodermal
    cortex through the localization of a Crumbs complex component, Patj (Pals-1-associated
    tight junction protein). We therefore elucidate a distinct molecular pathway that
    controls tissue tension and demonstrate the importance of such regulation for
    invasive migration in vivo.
acknowledged_ssus:
- _id: SSU
article_processing_charge: No
article_type: original
author:
- first_name: Aparna
  full_name: Ratheesh, Aparna
  id: 2F064CFE-F248-11E8-B48F-1D18A9856A87
  last_name: Ratheesh
  orcid: 0000-0001-7190-0776
- first_name: Julia
  full_name: Biebl, Julia
  id: 3CCBB46E-F248-11E8-B48F-1D18A9856A87
  last_name: Biebl
- first_name: Michael
  full_name: Smutny, Michael
  last_name: Smutny
- first_name: Jana
  full_name: Veselá, Jana
  id: 433253EE-F248-11E8-B48F-1D18A9856A87
  last_name: Veselá
- first_name: Ekaterina
  full_name: Papusheva, Ekaterina
  id: 41DB591E-F248-11E8-B48F-1D18A9856A87
  last_name: Papusheva
- first_name: Gabriel
  full_name: Krens, Gabriel
  id: 2B819732-F248-11E8-B48F-1D18A9856A87
  last_name: Krens
  orcid: 0000-0003-4761-5996
- first_name: Walter
  full_name: Kaufmann, Walter
  id: 3F99E422-F248-11E8-B48F-1D18A9856A87
  last_name: Kaufmann
  orcid: 0000-0001-9735-5315
- first_name: Attila
  full_name: György, Attila
  id: 3BCEDBE0-F248-11E8-B48F-1D18A9856A87
  last_name: György
  orcid: 0000-0002-1819-198X
- first_name: Alessandra M
  full_name: Casano, Alessandra M
  id: 3DBA3F4E-F248-11E8-B48F-1D18A9856A87
  last_name: Casano
  orcid: 0000-0002-6009-6804
- first_name: Daria E
  full_name: Siekhaus, Daria E
  id: 3D224B9E-F248-11E8-B48F-1D18A9856A87
  last_name: Siekhaus
  orcid: 0000-0001-8323-8353
citation:
  ama: Ratheesh A, Bicher J, Smutny M, et al. Drosophila TNF modulates tissue tension
    in the embryo to facilitate macrophage invasive migration. <i>Developmental Cell</i>.
    2018;45(3):331-346. doi:<a href="https://doi.org/10.1016/j.devcel.2018.04.002">10.1016/j.devcel.2018.04.002</a>
  apa: Ratheesh, A., Bicher, J., Smutny, M., Veselá, J., Papusheva, E., Krens, G.,
    … Siekhaus, D. E. (2018). Drosophila TNF modulates tissue tension in the embryo
    to facilitate macrophage invasive migration. <i>Developmental Cell</i>. Elsevier.
    <a href="https://doi.org/10.1016/j.devcel.2018.04.002">https://doi.org/10.1016/j.devcel.2018.04.002</a>
  chicago: Ratheesh, Aparna, Julia Bicher, Michael Smutny, Jana Veselá, Ekaterina
    Papusheva, Gabriel Krens, Walter Kaufmann, Attila György, Alessandra M Casano,
    and Daria E Siekhaus. “Drosophila TNF Modulates Tissue Tension in the Embryo to
    Facilitate Macrophage Invasive Migration.” <i>Developmental Cell</i>. Elsevier,
    2018. <a href="https://doi.org/10.1016/j.devcel.2018.04.002">https://doi.org/10.1016/j.devcel.2018.04.002</a>.
  ieee: A. Ratheesh <i>et al.</i>, “Drosophila TNF modulates tissue tension in the
    embryo to facilitate macrophage invasive migration,” <i>Developmental Cell</i>,
    vol. 45, no. 3. Elsevier, pp. 331–346, 2018.
  ista: Ratheesh A, Bicher J, Smutny M, Veselá J, Papusheva E, Krens G, Kaufmann W,
    György A, Casano AM, Siekhaus DE. 2018. Drosophila TNF modulates tissue tension
    in the embryo to facilitate macrophage invasive migration. Developmental Cell.
    45(3), 331–346.
  mla: Ratheesh, Aparna, et al. “Drosophila TNF Modulates Tissue Tension in the Embryo
    to Facilitate Macrophage Invasive Migration.” <i>Developmental Cell</i>, vol.
    45, no. 3, Elsevier, 2018, pp. 331–46, doi:<a href="https://doi.org/10.1016/j.devcel.2018.04.002">10.1016/j.devcel.2018.04.002</a>.
  short: A. Ratheesh, J. Bicher, M. Smutny, J. Veselá, E. Papusheva, G. Krens, W.
    Kaufmann, A. György, A.M. Casano, D.E. Siekhaus, Developmental Cell 45 (2018)
    331–346.
date_created: 2018-12-11T11:45:44Z
date_published: 2018-05-07T00:00:00Z
date_updated: 2023-09-11T13:22:13Z
day: '07'
department:
- _id: DaSi
- _id: CaHe
- _id: Bio
- _id: EM-Fac
- _id: MiSi
doi: 10.1016/j.devcel.2018.04.002
ec_funded: 1
external_id:
  isi:
  - '000432461400009'
  pmid:
  - '29738712'
intvolume: '        45'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1016/j.devcel.2018.04.002
month: '05'
oa: 1
oa_version: Published Version
page: 331 - 346
pmid: 1
project:
- _id: 253B6E48-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P29638
  name: Drosophila TNFa´s Funktion in Immunzellen
- _id: 2536F660-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '334077'
  name: Investigating the role of transporters in invasive migration through junctions
publication: Developmental Cell
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  link:
  - description: News on IST Homepage
    relation: press_release
    url: https://ist.ac.at/en/news/cells-change-tension-to-make-tissue-barriers-easier-to-get-through/
scopus_import: '1'
status: public
title: Drosophila TNF modulates tissue tension in the embryo to facilitate macrophage
  invasive migration
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 45
year: '2018'
...
---
_id: '328'
abstract:
- lang: eng
  text: The drag of turbulent flows can be drastically decreased by adding small amounts
    of high molecular weight polymers. While drag reduction initially increases with
    polymer concentration, it eventually saturates to what is known as the maximum
    drag reduction (MDR) asymptote; this asymptote is generally attributed to the
    dynamics being reduced to a marginal yet persistent state of subdued turbulent
    motion. Contrary to this accepted view, we show that, for an appropriate choice
    of parameters, polymers can reduce the drag beyond the suggested asymptotic limit,
    eliminating turbulence and giving way to laminar flow. At higher polymer concentrations,
    however, the laminar state becomes unstable, resulting in a fluctuating flow with
    the characteristic drag of the MDR asymptote. Our findings indicate that the asymptotic
    state is hence dynamically disconnected from ordinary turbulence. © 2018 American
    Physical Society.
acknowledged_ssus:
- _id: SSU
acknowledgement: The authors thank Philipp Maier and the IST Austria workshop for
  their dedicated technical support.
article_number: '124501'
article_processing_charge: No
author:
- first_name: George H
  full_name: Choueiri, George H
  id: 448BD5BC-F248-11E8-B48F-1D18A9856A87
  last_name: Choueiri
- first_name: Jose M
  full_name: Lopez Alonso, Jose M
  id: 40770848-F248-11E8-B48F-1D18A9856A87
  last_name: Lopez Alonso
  orcid: 0000-0002-0384-2022
- first_name: Björn
  full_name: Hof, Björn
  id: 3A374330-F248-11E8-B48F-1D18A9856A87
  last_name: Hof
  orcid: 0000-0003-2057-2754
citation:
  ama: Choueiri GH, Lopez Alonso JM, Hof B. Exceeding the asymptotic limit of polymer
    drag reduction. <i>Physical Review Letters</i>. 2018;120(12). doi:<a href="https://doi.org/10.1103/PhysRevLett.120.124501">10.1103/PhysRevLett.120.124501</a>
  apa: Choueiri, G. H., Lopez Alonso, J. M., &#38; Hof, B. (2018). Exceeding the asymptotic
    limit of polymer drag reduction. <i>Physical Review Letters</i>. American Physical
    Society. <a href="https://doi.org/10.1103/PhysRevLett.120.124501">https://doi.org/10.1103/PhysRevLett.120.124501</a>
  chicago: Choueiri, George H, Jose M Lopez Alonso, and Björn Hof. “Exceeding the
    Asymptotic Limit of Polymer Drag Reduction.” <i>Physical Review Letters</i>. American
    Physical Society, 2018. <a href="https://doi.org/10.1103/PhysRevLett.120.124501">https://doi.org/10.1103/PhysRevLett.120.124501</a>.
  ieee: G. H. Choueiri, J. M. Lopez Alonso, and B. Hof, “Exceeding the asymptotic
    limit of polymer drag reduction,” <i>Physical Review Letters</i>, vol. 120, no.
    12. American Physical Society, 2018.
  ista: Choueiri GH, Lopez Alonso JM, Hof B. 2018. Exceeding the asymptotic limit
    of polymer drag reduction. Physical Review Letters. 120(12), 124501.
  mla: Choueiri, George H., et al. “Exceeding the Asymptotic Limit of Polymer Drag
    Reduction.” <i>Physical Review Letters</i>, vol. 120, no. 12, 124501, American
    Physical Society, 2018, doi:<a href="https://doi.org/10.1103/PhysRevLett.120.124501">10.1103/PhysRevLett.120.124501</a>.
  short: G.H. Choueiri, J.M. Lopez Alonso, B. Hof, Physical Review Letters 120 (2018).
date_created: 2018-12-11T11:45:51Z
date_published: 2018-03-19T00:00:00Z
date_updated: 2023-10-10T13:27:44Z
day: '19'
department:
- _id: BjHo
doi: 10.1103/PhysRevLett.120.124501
ec_funded: 1
external_id:
  isi:
  - '000427804000005'
intvolume: '       120'
isi: 1
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1703.06271
month: '03'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 25152F3A-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '306589'
  name: Decoding the complexity of turbulence at its origin
publication: Physical Review Letters
publication_status: published
publisher: American Physical Society
publist_id: '7537'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Exceeding the asymptotic limit of polymer drag reduction
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 120
year: '2018'
...
---
_id: '15'
abstract:
- lang: eng
  text: Although much is known about the physiological framework of T cell motility,
    and numerous rate-limiting molecules have been identified through loss-of-function
    approaches, an integrated functional concept of T cell motility is lacking. Here,
    we used in vivo precision morphometry together with analysis of cytoskeletal dynamics
    in vitro to deconstruct the basic mechanisms of T cell migration within lymphatic
    organs. We show that the contributions of the integrin LFA-1 and the chemokine
    receptor CCR7 are complementary rather than positioned in a linear pathway, as
    they are during leukocyte extravasation from the blood vasculature. Our data demonstrate
    that CCR7 controls cortical actin flows, whereas integrins mediate substrate friction
    that is sufficient to drive locomotion in the absence of considerable surface
    adhesions and plasma membrane flux.
acknowledged_ssus:
- _id: SSU
acknowledgement: This work was funded by grants from the European Research Council
  (ERC StG 281556 and CoG 724373) and the Austrian Science Foundation (FWF) to M.S.
  and by Swiss National Foundation (SNF) project grants 31003A_135649, 31003A_153457
  and CR23I3_156234 to J.V.S. F.G. received funding from the European Union’s Horizon
  2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement
  no. 747687, and J.R. was funded by an EMBO long-term fellowship (ALTF 1396-2014).
article_processing_charge: No
author:
- first_name: Miroslav
  full_name: Hons, Miroslav
  id: 4167FE56-F248-11E8-B48F-1D18A9856A87
  last_name: Hons
  orcid: 0000-0002-6625-3348
- first_name: Aglaja
  full_name: Kopf, Aglaja
  id: 31DAC7B6-F248-11E8-B48F-1D18A9856A87
  last_name: Kopf
  orcid: 0000-0002-2187-6656
- first_name: Robert
  full_name: Hauschild, Robert
  id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
  last_name: Hauschild
  orcid: 0000-0001-9843-3522
- first_name: Alexander F
  full_name: Leithner, Alexander F
  id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87
  last_name: Leithner
  orcid: 0000-0002-1073-744X
- first_name: Florian R
  full_name: Gärtner, Florian R
  id: 397A88EE-F248-11E8-B48F-1D18A9856A87
  last_name: Gärtner
  orcid: 0000-0001-6120-3723
- first_name: Jun
  full_name: Abe, Jun
  last_name: Abe
- first_name: Jörg
  full_name: Renkawitz, Jörg
  id: 3F0587C8-F248-11E8-B48F-1D18A9856A87
  last_name: Renkawitz
  orcid: 0000-0003-2856-3369
- first_name: Jens
  full_name: Stein, Jens
  last_name: Stein
- first_name: Michael K
  full_name: Sixt, Michael K
  id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
  last_name: Sixt
  orcid: 0000-0002-6620-9179
citation:
  ama: Hons M, Kopf A, Hauschild R, et al. Chemokines and integrins independently
    tune actin flow and substrate friction during intranodal migration of T cells.
    <i>Nature Immunology</i>. 2018;19(6):606-616. doi:<a href="https://doi.org/10.1038/s41590-018-0109-z">10.1038/s41590-018-0109-z</a>
  apa: Hons, M., Kopf, A., Hauschild, R., Leithner, A. F., Gärtner, F. R., Abe, J.,
    … Sixt, M. K. (2018). Chemokines and integrins independently tune actin flow and
    substrate friction during intranodal migration of T cells. <i>Nature Immunology</i>.
    Nature Publishing Group. <a href="https://doi.org/10.1038/s41590-018-0109-z">https://doi.org/10.1038/s41590-018-0109-z</a>
  chicago: Hons, Miroslav, Aglaja Kopf, Robert Hauschild, Alexander F Leithner, Florian
    R Gärtner, Jun Abe, Jörg Renkawitz, Jens Stein, and Michael K Sixt. “Chemokines
    and Integrins Independently Tune Actin Flow and Substrate Friction during Intranodal
    Migration of T Cells.” <i>Nature Immunology</i>. Nature Publishing Group, 2018.
    <a href="https://doi.org/10.1038/s41590-018-0109-z">https://doi.org/10.1038/s41590-018-0109-z</a>.
  ieee: M. Hons <i>et al.</i>, “Chemokines and integrins independently tune actin
    flow and substrate friction during intranodal migration of T cells,” <i>Nature
    Immunology</i>, vol. 19, no. 6. Nature Publishing Group, pp. 606–616, 2018.
  ista: Hons M, Kopf A, Hauschild R, Leithner AF, Gärtner FR, Abe J, Renkawitz J,
    Stein J, Sixt MK. 2018. Chemokines and integrins independently tune actin flow
    and substrate friction during intranodal migration of T cells. Nature Immunology.
    19(6), 606–616.
  mla: Hons, Miroslav, et al. “Chemokines and Integrins Independently Tune Actin Flow
    and Substrate Friction during Intranodal Migration of T Cells.” <i>Nature Immunology</i>,
    vol. 19, no. 6, Nature Publishing Group, 2018, pp. 606–16, doi:<a href="https://doi.org/10.1038/s41590-018-0109-z">10.1038/s41590-018-0109-z</a>.
  short: M. Hons, A. Kopf, R. Hauschild, A.F. Leithner, F.R. Gärtner, J. Abe, J. Renkawitz,
    J. Stein, M.K. Sixt, Nature Immunology 19 (2018) 606–616.
date_created: 2018-12-11T11:44:10Z
date_published: 2018-05-18T00:00:00Z
date_updated: 2024-03-25T23:30:22Z
day: '18'
department:
- _id: MiSi
- _id: Bio
doi: 10.1038/s41590-018-0109-z
ec_funded: 1
external_id:
  isi:
  - '000433041500026'
  pmid:
  - '29777221'
intvolume: '        19'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.ncbi.nlm.nih.gov/pubmed/29777221
month: '05'
oa: 1
oa_version: Published Version
page: 606 - 616
pmid: 1
project:
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '724373'
  name: Cellular navigation along spatial gradients
- _id: 260AA4E2-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '747687'
  name: Mechanical Adaptation of Lamellipodial Actin Networks in Migrating Cells
- _id: 25A48D24-B435-11E9-9278-68D0E5697425
  grant_number: ALTF 1396-2014
  name: Molecular and system level view of immune cell migration
- _id: 25A603A2-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '281556'
  name: Cytoskeletal force generation and force transduction of migrating leukocytes
    (EU)
publication: Nature Immunology
publication_status: published
publisher: Nature Publishing Group
publist_id: '8040'
quality_controlled: '1'
related_material:
  record:
  - id: '6891'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Chemokines and integrins independently tune actin flow and substrate friction
  during intranodal migration of T cells
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 19
year: '2018'
...
---
_id: '437'
abstract:
- lang: eng
  text: Dendritic cells (DCs) are sentinels of the adaptive immune system that reside
    in peripheral organs of mammals. Upon pathogen encounter, they undergo maturation
    and up-regulate the chemokine receptor CCR7 that guides them along gradients of
    its chemokine ligands CCL19 and 21 to the next draining lymph node. There, DCs
    present peripherally acquired antigen to naïve T cells, thereby triggering adaptive
    immunity.
acknowledged_ssus:
- _id: SSU
acknowledgement: "This work was supported by grants of the European Research Council
  (ERC CoG 724373) and the Austrian Science Fund (FWF) to M.S. We thank the scientific
  support units at IST Austria for excellent technical support.\r\nWe thank the  scientific
  \ support units at IST Austria for excellent technical support.   "
article_processing_charge: Yes (via OA deal)
author:
- first_name: Alexander F
  full_name: Leithner, Alexander F
  id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87
  last_name: Leithner
  orcid: 0000-0002-1073-744X
- first_name: Jörg
  full_name: Renkawitz, Jörg
  id: 3F0587C8-F248-11E8-B48F-1D18A9856A87
  last_name: Renkawitz
  orcid: 0000-0003-2856-3369
- first_name: Ingrid
  full_name: De Vries, Ingrid
  id: 4C7D837E-F248-11E8-B48F-1D18A9856A87
  last_name: De Vries
- first_name: Robert
  full_name: Hauschild, Robert
  id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
  last_name: Hauschild
  orcid: 0000-0001-9843-3522
- first_name: Hans
  full_name: Haecker, Hans
  last_name: Haecker
- first_name: Michael K
  full_name: Sixt, Michael K
  id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
  last_name: Sixt
  orcid: 0000-0002-6620-9179
citation:
  ama: Leithner AF, Renkawitz J, de Vries I, Hauschild R, Haecker H, Sixt MK. Fast
    and efficient genetic engineering of hematopoietic precursor cells for the study
    of dendritic cell migration. <i>European Journal of Immunology</i>. 2018;48(6):1074-1077.
    doi:<a href="https://doi.org/10.1002/eji.201747358">10.1002/eji.201747358</a>
  apa: Leithner, A. F., Renkawitz, J., de Vries, I., Hauschild, R., Haecker, H., &#38;
    Sixt, M. K. (2018). Fast and efficient genetic engineering of hematopoietic precursor
    cells for the study of dendritic cell migration. <i>European Journal of Immunology</i>.
    Wiley-Blackwell. <a href="https://doi.org/10.1002/eji.201747358">https://doi.org/10.1002/eji.201747358</a>
  chicago: Leithner, Alexander F, Jörg Renkawitz, Ingrid de Vries, Robert Hauschild,
    Hans Haecker, and Michael K Sixt. “Fast and Efficient Genetic Engineering of Hematopoietic
    Precursor Cells for the Study of Dendritic Cell Migration.” <i>European Journal
    of Immunology</i>. Wiley-Blackwell, 2018. <a href="https://doi.org/10.1002/eji.201747358">https://doi.org/10.1002/eji.201747358</a>.
  ieee: A. F. Leithner, J. Renkawitz, I. de Vries, R. Hauschild, H. Haecker, and M.
    K. Sixt, “Fast and efficient genetic engineering of hematopoietic precursor cells
    for the study of dendritic cell migration,” <i>European Journal of Immunology</i>,
    vol. 48, no. 6. Wiley-Blackwell, pp. 1074–1077, 2018.
  ista: Leithner AF, Renkawitz J, de Vries I, Hauschild R, Haecker H, Sixt MK. 2018.
    Fast and efficient genetic engineering of hematopoietic precursor cells for the
    study of dendritic cell migration. European Journal of Immunology. 48(6), 1074–1077.
  mla: Leithner, Alexander F., et al. “Fast and Efficient Genetic Engineering of Hematopoietic
    Precursor Cells for the Study of Dendritic Cell Migration.” <i>European Journal
    of Immunology</i>, vol. 48, no. 6, Wiley-Blackwell, 2018, pp. 1074–77, doi:<a
    href="https://doi.org/10.1002/eji.201747358">10.1002/eji.201747358</a>.
  short: A.F. Leithner, J. Renkawitz, I. de Vries, R. Hauschild, H. Haecker, M.K.
    Sixt, European Journal of Immunology 48 (2018) 1074–1077.
date_created: 2018-12-11T11:46:28Z
date_published: 2018-02-13T00:00:00Z
date_updated: 2023-09-11T14:01:18Z
day: '13'
ddc:
- '570'
department:
- _id: MiSi
- _id: Bio
doi: 10.1002/eji.201747358
ec_funded: 1
external_id:
  isi:
  - '000434963700016'
file:
- access_level: open_access
  checksum: 9d5b74cd016505aeb9a4c2d33bbedaeb
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:13:56Z
  date_updated: 2020-07-14T12:46:27Z
  file_id: '5044'
  file_name: IST-2018-1067-v1+2_Leithner_et_al-2018-European_Journal_of_Immunology.pdf
  file_size: 590106
  relation: main_file
file_date_updated: 2020-07-14T12:46:27Z
has_accepted_license: '1'
intvolume: '        48'
isi: 1
issue: '6'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: 1074 - 1077
project:
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '724373'
  name: Cellular navigation along spatial gradients
publication: European Journal of Immunology
publication_status: published
publisher: Wiley-Blackwell
publist_id: '7386'
pubrep_id: '1067'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fast and efficient genetic engineering of hematopoietic precursor cells for
  the study of dendritic cell migration
tmp:
  image: /images/cc_by_nc.png
  legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
  short: CC BY-NC (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 48
year: '2018'
...
