---
_id: '14843'
abstract:
- lang: eng
text: The coupling between Ca2+ channels and release sensors is a key factor defining
the signaling properties of a synapse. However, the coupling nanotopography at
many synapses remains unknown, and it is unclear how it changes during development.
To address these questions, we examined coupling at the cerebellar inhibitory
basket cell (BC)-Purkinje cell (PC) synapse. Biophysical analysis of transmission
by paired recording and intracellular pipette perfusion revealed that the effects
of exogenous Ca2+ chelators decreased during development, despite constant reliance
of release on P/Q-type Ca2+ channels. Structural analysis by freeze-fracture replica
labeling (FRL) and transmission electron microscopy (EM) indicated that presynaptic
P/Q-type Ca2+ channels formed nanoclusters throughout development, whereas docked
vesicles were only clustered at later developmental stages. Modeling suggested
a developmental transformation from a more random to a more clustered coupling
nanotopography. Thus, presynaptic signaling developmentally approaches a point-to-point
configuration, optimizing speed, reliability, and energy efficiency of synaptic
transmission.
acknowledged_ssus:
- _id: EM-Fac
- _id: PreCl
- _id: M-Shop
acknowledgement: We thank Drs. David DiGregorio and Erwin Neher for critically reading
an earlier version of the manuscript, Ralf Schneggenburger for helpful discussions,
Benjamin Suter and Katharina Lichter for support with image analysis, Chris Wojtan
for advice on numerical solution of partial differential equations, Maria Reva for
help with Ripley analysis, Alois Schlögl for programming, and Akari Hagiwara and
Toshihisa Ohtsuka for anti-ELKS antibody. We are grateful to Florian Marr, Christina
Altmutter, and Vanessa Zheden for excellent technical assistance and to Eleftheria
Kralli-Beller for manuscript editing. This research was supported by the Scientific
Services Units (SSUs) of ISTA (Electron Microscopy Facility, Preclinical Facility,
and Machine Shop). The project received funding from the European Research Council
(ERC) under the European Union’s Horizon 2020 research and innovation program (grant
agreement no. 692692), the Fonds zur Förderung der Wissenschaftlichen Forschung
(Z 312-B27, Wittgenstein award; P 36232-B), all to P.J., and a DOC fellowship of
the Austrian Academy of Sciences to J.-J.C.
article_processing_charge: No
article_type: original
author:
- first_name: JingJing
full_name: Chen, JingJing
id: 2C4E65C8-F248-11E8-B48F-1D18A9856A87
last_name: Chen
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Chong
full_name: Chen, Chong
id: 3DFD581A-F248-11E8-B48F-1D18A9856A87
last_name: Chen
- first_name: Itaru
full_name: Arai, Itaru
id: 32A73F6C-F248-11E8-B48F-1D18A9856A87
last_name: Arai
- first_name: Olena
full_name: Kim, Olena
id: 3F8ABDDA-F248-11E8-B48F-1D18A9856A87
last_name: Kim
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
- 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: Chen J, Kaufmann W, Chen C, et al. Developmental transformation of Ca2+ channel-vesicle
nanotopography at a central GABAergic synapse. Neuron. doi:10.1016/j.neuron.2023.12.002
apa: Chen, J., Kaufmann, W., Chen, C., Arai, itaru, Kim, O., Shigemoto, R., &
Jonas, P. M. (n.d.). Developmental transformation of Ca2+ channel-vesicle nanotopography
at a central GABAergic synapse. Neuron. Elsevier. https://doi.org/10.1016/j.neuron.2023.12.002
chicago: Chen, JingJing, Walter Kaufmann, Chong Chen, itaru Arai, Olena Kim, Ryuichi
Shigemoto, and Peter M Jonas. “Developmental Transformation of Ca2+ Channel-Vesicle
Nanotopography at a Central GABAergic Synapse.” Neuron. Elsevier, n.d.
https://doi.org/10.1016/j.neuron.2023.12.002.
ieee: J. Chen et al., “Developmental transformation of Ca2+ channel-vesicle
nanotopography at a central GABAergic synapse,” Neuron. Elsevier.
ista: Chen J, Kaufmann W, Chen C, Arai itaru, Kim O, Shigemoto R, Jonas PM. Developmental
transformation of Ca2+ channel-vesicle nanotopography at a central GABAergic synapse.
Neuron.
mla: Chen, JingJing, et al. “Developmental Transformation of Ca2+ Channel-Vesicle
Nanotopography at a Central GABAergic Synapse.” Neuron, Elsevier, doi:10.1016/j.neuron.2023.12.002.
short: J. Chen, W. Kaufmann, C. Chen, itaru Arai, O. Kim, R. Shigemoto, P.M. Jonas,
Neuron (n.d.).
date_created: 2024-01-21T23:00:56Z
date_published: 2024-01-11T00:00:00Z
date_updated: 2024-03-05T09:31:24Z
day: '11'
department:
- _id: PeJo
- _id: EM-Fac
- _id: RySh
doi: 10.1016/j.neuron.2023.12.002
ec_funded: 1
external_id:
pmid:
- '38215739'
language:
- iso: eng
month: '01'
oa_version: None
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: bd88be38-d553-11ed-ba76-81d5a70a6ef5
grant_number: P36232
name: Mechanisms of GABA release in hippocampal circuits
- _id: 26B66A3E-B435-11E9-9278-68D0E5697425
grant_number: '25383'
name: Development of nanodomain coupling between Ca2+ channels and release sensors
at a central inhibitory synapse
publication: Neuron
publication_identifier:
eissn:
- 1097-4199
issn:
- 0896-6273
publication_status: inpress
publisher: Elsevier
quality_controlled: '1'
related_material:
link:
- description: News on ISTA Website
relation: press_release
url: https://ista.ac.at/en/news/synapses-brought-to-the-point/
scopus_import: '1'
status: public
title: Developmental transformation of Ca2+ channel-vesicle nanotopography at a central
GABAergic synapse
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2024'
...
---
_id: '10703'
abstract:
- lang: eng
text: 'When crawling through the body, leukocytes often traverse tissues that are
densely packed with extracellular matrix and other cells, and this raises the
question: How do leukocytes overcome compressive mechanical loads? Here, we show
that the actin cortex of leukocytes is mechanoresponsive and that this responsiveness
requires neither force sensing via the nucleus nor adhesive interactions with
a substrate. Upon global compression of the cell body as well as local indentation
of the plasma membrane, Wiskott-Aldrich syndrome protein (WASp) assembles into
dot-like structures, providing activation platforms for Arp2/3 nucleated actin
patches. These patches locally push against the external load, which can be obstructing
collagen fibers or other cells, and thereby create space to facilitate forward
locomotion. We show in vitro and in vivo that this WASp function is rate limiting
for ameboid leukocyte migration in dense but not in loose environments and is
required for trafficking through diverse tissues such as skin and lymph nodes.'
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
acknowledgement: We thank N. Darwish-Miranda, F. Leite, F.P. Assen, and A. Eichner
for advice and help with experiments. We thank J. Renkawitz, E. Kiermaier, A. Juanes
Garcia, and M. Avellaneda for critical reading of the manuscript. We thank M. Driscoll
for advice on fluorescent labeling of collagen gels. This research was supported
by the Scientific Service Units (SSUs) of IST Austria through resources provided
by Molecular Biology Services/Lab Support Facility (LSF)/Bioimaging Facility/Electron
Microscopy Facility. This work was funded by grants from the European Research Council
( CoG 724373 ) and the Austrian Science Foundation (FWF) to M.S. F.G. received funding
from the European Union’s Horizon 2020 research and innovation program under the
Marie Skłodowska-Curie grant agreement no. 747687.
article_processing_charge: No
article_type: original
author:
- first_name: Florian
full_name: Gaertner, Florian
last_name: Gaertner
- first_name: Patricia
full_name: Reis-Rodrigues, Patricia
last_name: Reis-Rodrigues
- first_name: Ingrid
full_name: De Vries, Ingrid
id: 4C7D837E-F248-11E8-B48F-1D18A9856A87
last_name: De Vries
- first_name: Miroslav
full_name: Hons, Miroslav
id: 4167FE56-F248-11E8-B48F-1D18A9856A87
last_name: Hons
orcid: 0000-0002-6625-3348
- first_name: Juan
full_name: Aguilera, Juan
last_name: Aguilera
- first_name: Michael
full_name: Riedl, Michael
id: 3BE60946-F248-11E8-B48F-1D18A9856A87
last_name: Riedl
orcid: 0000-0003-4844-6311
- 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: Saren
full_name: Tasciyan, Saren
id: 4323B49C-F248-11E8-B48F-1D18A9856A87
last_name: Tasciyan
orcid: 0000-0003-1671-393X
- first_name: Aglaja
full_name: Kopf, Aglaja
id: 31DAC7B6-F248-11E8-B48F-1D18A9856A87
last_name: Kopf
orcid: 0000-0002-2187-6656
- first_name: Jack
full_name: Merrin, Jack
id: 4515C308-F248-11E8-B48F-1D18A9856A87
last_name: Merrin
orcid: 0000-0001-5145-4609
- first_name: Vanessa
full_name: Zheden, Vanessa
id: 39C5A68A-F248-11E8-B48F-1D18A9856A87
last_name: Zheden
orcid: 0000-0002-9438-4783
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Robert
full_name: Hauschild, Robert
id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
last_name: Hauschild
orcid: 0000-0001-9843-3522
- 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: Gaertner F, Reis-Rodrigues P, de Vries I, et al. WASp triggers mechanosensitive
actin patches to facilitate immune cell migration in dense tissues. Developmental
Cell. 2022;57(1):47-62.e9. doi:10.1016/j.devcel.2021.11.024
apa: Gaertner, F., Reis-Rodrigues, P., de Vries, I., Hons, M., Aguilera, J., Riedl,
M., … Sixt, M. K. (2022). WASp triggers mechanosensitive actin patches to facilitate
immune cell migration in dense tissues. Developmental Cell. Cell Press ;
Elsevier. https://doi.org/10.1016/j.devcel.2021.11.024
chicago: Gaertner, Florian, Patricia Reis-Rodrigues, Ingrid de Vries, Miroslav Hons,
Juan Aguilera, Michael Riedl, Alexander F Leithner, et al. “WASp Triggers Mechanosensitive
Actin Patches to Facilitate Immune Cell Migration in Dense Tissues.” Developmental
Cell. Cell Press ; Elsevier, 2022. https://doi.org/10.1016/j.devcel.2021.11.024.
ieee: F. Gaertner et al., “WASp triggers mechanosensitive actin patches to
facilitate immune cell migration in dense tissues,” Developmental Cell,
vol. 57, no. 1. Cell Press ; Elsevier, p. 47–62.e9, 2022.
ista: Gaertner F, Reis-Rodrigues P, de Vries I, Hons M, Aguilera J, Riedl M, Leithner
AF, Tasciyan S, Kopf A, Merrin J, Zheden V, Kaufmann W, Hauschild R, Sixt MK.
2022. WASp triggers mechanosensitive actin patches to facilitate immune cell migration
in dense tissues. Developmental Cell. 57(1), 47–62.e9.
mla: Gaertner, Florian, et al. “WASp Triggers Mechanosensitive Actin Patches to
Facilitate Immune Cell Migration in Dense Tissues.” Developmental Cell,
vol. 57, no. 1, Cell Press ; Elsevier, 2022, p. 47–62.e9, doi:10.1016/j.devcel.2021.11.024.
short: F. Gaertner, P. Reis-Rodrigues, I. de Vries, M. Hons, J. Aguilera, M. Riedl,
A.F. Leithner, S. Tasciyan, A. Kopf, J. Merrin, V. Zheden, W. Kaufmann, R. Hauschild,
M.K. Sixt, Developmental Cell 57 (2022) 47–62.e9.
date_created: 2022-01-30T23:01:33Z
date_published: 2022-01-10T00:00:00Z
date_updated: 2024-03-25T23:30:12Z
day: '10'
ddc:
- '570'
department:
- _id: MiSi
- _id: EM-Fac
- _id: NanoFab
- _id: BjHo
doi: 10.1016/j.devcel.2021.11.024
ec_funded: 1
external_id:
isi:
- '000768933800005'
pmid:
- '34919802'
intvolume: ' 57'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S1534580721009497
month: '01'
oa: 1
oa_version: Published Version
page: 47-62.e9
pmid: 1
project:
- _id: 260AA4E2-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '747687'
name: Mechanical Adaptation of Lamellipodial Actin Networks in Migrating Cells
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '724373'
name: Cellular navigation along spatial gradients
publication: Developmental Cell
publication_identifier:
eissn:
- 1878-1551
issn:
- 1534-5807
publication_status: published
publisher: Cell Press ; Elsevier
quality_controlled: '1'
related_material:
record:
- id: '12726'
relation: dissertation_contains
status: public
- id: '14530'
relation: dissertation_contains
status: public
- id: '12401'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: WASp triggers mechanosensitive actin patches to facilitate immune cell migration
in dense tissues
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: 57
year: '2022'
...
---
_id: '10766'
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 grow [J.-L. Maître et al., Science 338, 253–256 (2012)].
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. After 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: PreCl
acknowledgement: 'We thank Guillaume Salbreaux, Silvia Grigolon, Edouard Hannezo,
and Vanessa Barone for discussions and comments on the manuscript and Shayan Shamipour
and Daniel Capek for help with data analysis. We also thank the Imaging & Optics,
Electron Microscopy, and Zebrafish Facility Scientific Service Units at the Institute
of Science and Technology Austria (ISTA)Nasser Darwish-Miranda for continuous support.
We acknowledge Hitoshi Morita for the gift of VinculinB-GFP plasmid. This research
was supported by an ISTA Fellow Marie-Curie Co-funding of regional, national, and
international programmes Grant P_IST_EU01 (to J.S.), European Molecular Biology
Organization Long-Term Fellowship Grant, ALTF reference number: 187-2013 (to M.S.),
Schroedinger Fellowship J4332-B28 (to M.S.), and European Research Council Advanced
Grant (MECSPEC; to C.-P.H.).'
article_number: e2122030119
article_processing_charge: No
article_type: original
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: Feyza N
full_name: Arslan, Feyza N
id: 49DA7910-F248-11E8-B48F-1D18A9856A87
last_name: Arslan
orcid: 0000-0001-5809-9566
- 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: Jack
full_name: Merrin, Jack
id: 4515C308-F248-11E8-B48F-1D18A9856A87
last_name: Merrin
orcid: 0000-0001-5145-4609
- 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, Arslan FN, et al. Tension-dependent stabilization of
E-cadherin limits cell-cell contact expansion in zebrafish germ-layer progenitor
cells. Proceedings of the National Academy of Sciences of the United States
of America. 2022;119(8). doi:10.1073/pnas.2122030119
apa: Slovakova, J., Sikora, M. K., Arslan, F. N., Caballero Mancebo, S., Krens,
G., Kaufmann, W., … Heisenberg, C.-P. J. (2022). Tension-dependent stabilization
of E-cadherin limits cell-cell contact expansion in zebrafish germ-layer progenitor
cells. Proceedings of the National Academy of Sciences of the United States
of America. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2122030119
chicago: Slovakova, Jana, Mateusz K Sikora, Feyza N Arslan, Silvia Caballero Mancebo,
Gabriel Krens, Walter Kaufmann, Jack Merrin, and Carl-Philipp J Heisenberg. “Tension-Dependent
Stabilization of E-Cadherin Limits Cell-Cell Contact Expansion in Zebrafish Germ-Layer
Progenitor Cells.” Proceedings of the National Academy of Sciences of the United
States of America. Proceedings of the National Academy of Sciences, 2022.
https://doi.org/10.1073/pnas.2122030119.
ieee: J. Slovakova et al., “Tension-dependent stabilization of E-cadherin
limits cell-cell contact expansion in zebrafish germ-layer progenitor cells,”
Proceedings of the National Academy of Sciences of the United States of America,
vol. 119, no. 8. Proceedings of the National Academy of Sciences, 2022.
ista: Slovakova J, Sikora MK, Arslan FN, Caballero Mancebo S, Krens G, Kaufmann
W, Merrin J, Heisenberg C-PJ. 2022. Tension-dependent stabilization of E-cadherin
limits cell-cell contact expansion in zebrafish germ-layer progenitor cells. Proceedings
of the National Academy of Sciences of the United States of America. 119(8), e2122030119.
mla: Slovakova, Jana, et al. “Tension-Dependent Stabilization of E-Cadherin Limits
Cell-Cell Contact Expansion in Zebrafish Germ-Layer Progenitor Cells.” Proceedings
of the National Academy of Sciences of the United States of America, vol.
119, no. 8, e2122030119, Proceedings of the National Academy of Sciences, 2022,
doi:10.1073/pnas.2122030119.
short: J. Slovakova, M.K. Sikora, F.N. Arslan, S. Caballero Mancebo, G. Krens, W.
Kaufmann, J. Merrin, C.-P.J. Heisenberg, Proceedings of the National Academy of
Sciences of the United States of America 119 (2022).
date_created: 2022-02-20T23:01:31Z
date_published: 2022-02-14T00:00:00Z
date_updated: 2023-08-02T14:26:51Z
day: '14'
ddc:
- '570'
department:
- _id: CaHe
- _id: EM-Fac
- _id: Bio
doi: 10.1073/pnas.2122030119
ec_funded: 1
external_id:
isi:
- '000766926900009'
file:
- access_level: open_access
checksum: d49f83c3580613966f71768ddb9a55a5
content_type: application/pdf
creator: dernst
date_created: 2022-02-21T08:45:11Z
date_updated: 2022-02-21T08:45:11Z
file_id: '10780'
file_name: 2022_PNAS_Slovakova.pdf
file_size: 1609678
relation: main_file
success: 1
file_date_updated: 2022-02-21T08:45:11Z
has_accepted_license: '1'
intvolume: ' 119'
isi: 1
issue: '8'
language:
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month: '02'
oa: 1
oa_version: Published Version
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: Proceedings of the National Academy of Sciences of the United States
of America
publication_identifier:
eissn:
- '10916490'
publication_status: published
publisher: Proceedings of the National Academy of Sciences
quality_controlled: '1'
related_material:
record:
- id: '9750'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion
in zebrafish germ-layer progenitor cells
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: 119
year: '2022'
...
---
_id: '10841'
abstract:
- lang: eng
text: In eukaryotes, clathrin-coated vesicles (CCVs) facilitate the internalization
of material from the cell surface as well as the movement of cargo in post-Golgi
trafficking pathways. This diversity of functions is partially provided by multiple
monomeric and multimeric clathrin adaptor complexes that provide compartment and
cargo selectivity. The adaptor-protein assembly polypeptide-1 (AP-1) complex operates
as part of the secretory pathway at the trans-Golgi network (TGN), while the AP-2
complex and the TPLATE complex jointly operate at the plasma membrane to execute
clathrin-mediated endocytosis. Key to our further understanding of clathrin-mediated
trafficking in plants will be the comprehensive identification and characterization
of the network of evolutionarily conserved and plant-specific core and accessory
machinery involved in the formation and targeting of CCVs. To facilitate these
studies, we have analyzed the proteome of enriched TGN/early endosome-derived
and endocytic CCVs isolated from dividing and expanding suspension-cultured Arabidopsis
(Arabidopsis thaliana) cells. Tandem mass spectrometry analysis results were validated
by differential chemical labeling experiments to identify proteins co-enriching
with CCVs. Proteins enriched in CCVs included previously characterized CCV components
and cargos such as the vacuolar sorting receptors in addition to conserved and
plant-specific components whose function in clathrin-mediated trafficking has
not been previously defined. Notably, in addition to AP-1 and AP-2, all subunits
of the AP-4 complex, but not AP-3 or AP-5, were found to be in high abundance
in the CCV proteome. The association of AP-4 with suspension-cultured Arabidopsis
CCVs is further supported via additional biochemical data.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: 'The authors would like to acknowledge the VIB Proteomics Core Facility
(VIB-UGent Center for Medical Biotechnology in Ghent, Belgium) and the Research
Technology Support Facility Proteomics Core (Michigan State University in East Lansing,
Michigan) for sample analysis, as well as the University of Wisconsin Biotechnology
Center Mass Spectrometry Core Facility (Madison, WI) for help with data processing.
Additionally, we are grateful to Sue Weintraub (UT Health San Antonio) and Sydney
Thomas (UW- Madison) for assistance with data analysis. This research was supported
by grants to S.Y.B. from the National Science Foundation (Nos. 1121998 and 1614915)
and a Vilas Associate Award (University of Wisconsin, Madison, Graduate School);
to J.P. from the National Natural Science Foundation of China (Nos. 91754104, 31820103008,
and 31670283); to I.H. from the National Research Foundation of Korea (No. 2019R1A2B5B03099982).
This research was also supported by the Scientific Service Units (SSU) of IST Austria
through resources provided by the Electron microscopy Facility (EMF). A.J. is supported
by funding from the Austrian Science Fund (FWF): I3630B25 to J.F. A.H. is supported
by funding from the National Science Foundation (NSF IOS Nos. 1025837 and 1147032).'
article_processing_charge: No
article_type: original
author:
- first_name: DA
full_name: Dahhan, DA
last_name: Dahhan
- first_name: GD
full_name: Reynolds, GD
last_name: Reynolds
- first_name: JJ
full_name: Cárdenas, JJ
last_name: Cárdenas
- first_name: D
full_name: Eeckhout, D
last_name: Eeckhout
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: K
full_name: Yperman, K
last_name: Yperman
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: N
full_name: Vang, N
last_name: Vang
- first_name: X
full_name: Yan, X
last_name: Yan
- first_name: I
full_name: Hwang, I
last_name: Hwang
- first_name: A
full_name: Heese, A
last_name: Heese
- first_name: G
full_name: De Jaeger, G
last_name: De Jaeger
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: D
full_name: Van Damme, D
last_name: Van Damme
- first_name: J
full_name: Pan, J
last_name: Pan
- first_name: SY
full_name: Bednarek, SY
last_name: Bednarek
citation:
ama: Dahhan D, Reynolds G, Cárdenas J, et al. Proteomic characterization of isolated
Arabidopsis clathrin-coated vesicles reveals evolutionarily conserved and plant-specific
components. Plant Cell. 2022;34(6):2150-2173. doi:10.1093/plcell/koac071
apa: Dahhan, D., Reynolds, G., Cárdenas, J., Eeckhout, D., Johnson, A. J., Yperman,
K., … Bednarek, S. (2022). Proteomic characterization of isolated Arabidopsis
clathrin-coated vesicles reveals evolutionarily conserved and plant-specific components.
Plant Cell. Oxford Academic. https://doi.org/10.1093/plcell/koac071
chicago: Dahhan, DA, GD Reynolds, JJ Cárdenas, D Eeckhout, Alexander J Johnson,
K Yperman, Walter Kaufmann, et al. “Proteomic Characterization of Isolated Arabidopsis
Clathrin-Coated Vesicles Reveals Evolutionarily Conserved and Plant-Specific Components.”
Plant Cell. Oxford Academic, 2022. https://doi.org/10.1093/plcell/koac071.
ieee: D. Dahhan et al., “Proteomic characterization of isolated Arabidopsis
clathrin-coated vesicles reveals evolutionarily conserved and plant-specific components,”
Plant Cell, vol. 34, no. 6. Oxford Academic, pp. 2150–2173, 2022.
ista: Dahhan D, Reynolds G, Cárdenas J, Eeckhout D, Johnson AJ, Yperman K, Kaufmann
W, Vang N, Yan X, Hwang I, Heese A, De Jaeger G, Friml J, Van Damme D, Pan J,
Bednarek S. 2022. Proteomic characterization of isolated Arabidopsis clathrin-coated
vesicles reveals evolutionarily conserved and plant-specific components. Plant
Cell. 34(6), 2150–2173.
mla: Dahhan, DA, et al. “Proteomic Characterization of Isolated Arabidopsis Clathrin-Coated
Vesicles Reveals Evolutionarily Conserved and Plant-Specific Components.” Plant
Cell, vol. 34, no. 6, Oxford Academic, 2022, pp. 2150–73, doi:10.1093/plcell/koac071.
short: D. Dahhan, G. Reynolds, J. Cárdenas, D. Eeckhout, A.J. Johnson, K. Yperman,
W. Kaufmann, N. Vang, X. Yan, I. Hwang, A. Heese, G. De Jaeger, J. Friml, D. Van
Damme, J. Pan, S. Bednarek, Plant Cell 34 (2022) 2150–2173.
date_created: 2022-03-08T13:47:51Z
date_published: 2022-06-01T00:00:00Z
date_updated: 2023-08-02T14:46:48Z
day: '01'
department:
- _id: JiFr
- _id: EM-Fac
doi: 10.1093/plcell/koac071
external_id:
isi:
- '000767438800001'
pmid:
- '35218346'
intvolume: ' 34'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1101/2021.09.16.460678
month: '06'
oa: 1
oa_version: Preprint
page: 2150-2173
pmid: 1
project:
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: Plant Cell
publication_identifier:
eissn:
- 1532-298x
issn:
- 1040-4651
publication_status: published
publisher: Oxford Academic
quality_controlled: '1'
scopus_import: '1'
status: public
title: Proteomic characterization of isolated Arabidopsis clathrin-coated vesicles
reveals evolutionarily conserved and plant-specific components
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 34
year: '2022'
...
---
_id: '12239'
abstract:
- lang: eng
text: Biological systems are the sum of their dynamic three-dimensional (3D) parts.
Therefore, it is critical to study biological structures in 3D and at high resolution
to gain insights into their physiological functions. Electron microscopy of metal
replicas of unroofed cells and isolated organelles has been a key technique to
visualize intracellular structures at nanometer resolution. However, many of these
methods require specialized equipment and personnel to complete them. Here, we
present novel accessible methods to analyze biological structures in unroofed
cells and biochemically isolated organelles in 3D and at nanometer resolution,
focusing on Arabidopsis clathrin-coated vesicles (CCVs). While CCVs are essential
trafficking organelles, their detailed structural information is lacking due to
their poor preservation when observed via classical electron microscopy protocols
experiments. First, we establish a method to visualize CCVs in unroofed cells
using scanning transmission electron microscopy tomography, providing sufficient
resolution to define the clathrin coat arrangements. Critically, the samples are
prepared directly on electron microscopy grids, removing the requirement to use
extremely corrosive acids, thereby enabling the use of this method in any electron
microscopy lab. Secondly, we demonstrate that this standardized sample preparation
allows the direct comparison of isolated CCV samples with those visualized in
cells. Finally, to facilitate the high-throughput and robust screening of metal
replicated samples, we provide a deep learning analysis method to screen the “pseudo
3D” morphologies of CCVs imaged with 2D modalities. Collectively, our work establishes
accessible ways to examine the 3D structure of biological samples and provide
novel insights into the structure of plant CCVs.
acknowledged_ssus:
- _id: EM-Fac
- _id: LifeSc
- _id: Bio
acknowledgement: A.J. is supported by funding from the Austrian Science Fund I3630B25
(to J.F.). This research was supported by the Scientific Service Units of Institute
of Science and Technology Austria (ISTA) through resources provided by the Electron
Microscopy Facility, Lab Support Facility, and the Imaging and Optics Facility.
We acknowledge Prof. David Robinson (Heidelberg) and Prof. Jan Traas (Lyon) for
making us aware of previously published classical on-grid preparation methods. No
conflict of interest declared.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Christoph M
full_name: Sommer, Christoph M
id: 4DF26D8C-F248-11E8-B48F-1D18A9856A87
last_name: Sommer
orcid: 0000-0003-1216-9105
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Dana A.
full_name: Dahhan, Dana A.
last_name: Dahhan
- first_name: Sebastian Y.
full_name: Bednarek, Sebastian Y.
last_name: Bednarek
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Johnson AJ, Kaufmann W, Sommer CM, et al. Three-dimensional visualization of
planta clathrin-coated vesicles at ultrastructural resolution. Molecular Plant.
2022;15(10):1533-1542. doi:10.1016/j.molp.2022.09.003
apa: Johnson, A. J., Kaufmann, W., Sommer, C. M., Costanzo, T., Dahhan, D. A., Bednarek,
S. Y., & Friml, J. (2022). Three-dimensional visualization of planta clathrin-coated
vesicles at ultrastructural resolution. Molecular Plant. Elsevier. https://doi.org/10.1016/j.molp.2022.09.003
chicago: Johnson, Alexander J, Walter Kaufmann, Christoph M Sommer, Tommaso Costanzo,
Dana A. Dahhan, Sebastian Y. Bednarek, and Jiří Friml. “Three-Dimensional Visualization
of Planta Clathrin-Coated Vesicles at Ultrastructural Resolution.” Molecular
Plant. Elsevier, 2022. https://doi.org/10.1016/j.molp.2022.09.003.
ieee: A. J. Johnson et al., “Three-dimensional visualization of planta clathrin-coated
vesicles at ultrastructural resolution,” Molecular Plant, vol. 15, no.
10. Elsevier, pp. 1533–1542, 2022.
ista: Johnson AJ, Kaufmann W, Sommer CM, Costanzo T, Dahhan DA, Bednarek SY, Friml
J. 2022. Three-dimensional visualization of planta clathrin-coated vesicles at
ultrastructural resolution. Molecular Plant. 15(10), 1533–1542.
mla: Johnson, Alexander J., et al. “Three-Dimensional Visualization of Planta Clathrin-Coated
Vesicles at Ultrastructural Resolution.” Molecular Plant, vol. 15, no.
10, Elsevier, 2022, pp. 1533–42, doi:10.1016/j.molp.2022.09.003.
short: A.J. Johnson, W. Kaufmann, C.M. Sommer, T. Costanzo, D.A. Dahhan, S.Y. Bednarek,
J. Friml, Molecular Plant 15 (2022) 1533–1542.
date_created: 2023-01-16T09:51:49Z
date_published: 2022-10-03T00:00:00Z
date_updated: 2023-08-04T09:39:24Z
day: '03'
ddc:
- '580'
department:
- _id: JiFr
- _id: EM-Fac
- _id: Bio
doi: 10.1016/j.molp.2022.09.003
external_id:
isi:
- '000882769800009'
pmid:
- '36081349'
file:
- access_level: open_access
checksum: 04d5c12490052d03e4dc4412338a43dd
content_type: application/pdf
creator: dernst
date_created: 2023-01-30T07:46:51Z
date_updated: 2023-01-30T07:46:51Z
file_id: '12435'
file_name: 2022_MolecularPlant_Johnson.pdf
file_size: 2307251
relation: main_file
success: 1
file_date_updated: 2023-01-30T07:46:51Z
has_accepted_license: '1'
intvolume: ' 15'
isi: 1
issue: '10'
keyword:
- Plant Science
- Molecular Biology
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 1533-1542
pmid: 1
project:
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: Molecular Plant
publication_identifier:
issn:
- 1674-2052
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Three-dimensional visualization of planta clathrin-coated vesicles at ultrastructural
resolution
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: 15
year: '2022'
...
---
_id: '12291'
abstract:
- lang: eng
text: The phytohormone auxin triggers transcriptional reprogramming through a well-characterized
perception machinery in the nucleus. By contrast, mechanisms that underlie fast
effects of auxin, such as the regulation of ion fluxes, rapid phosphorylation
of proteins or auxin feedback on its transport, remain unclear1,2,3. Whether auxin-binding
protein 1 (ABP1) is an auxin receptor has been a source of debate for decades1,4.
Here we show that a fraction of Arabidopsis thaliana ABP1 is secreted and binds
auxin specifically at an acidic pH that is typical of the apoplast. ABP1 and its
plasma-membrane-localized partner, transmembrane kinase 1 (TMK1), are required
for the auxin-induced ultrafast global phospho-response and for downstream processes
that include the activation of H+-ATPase and accelerated cytoplasmic streaming.
abp1 and tmk mutants cannot establish auxin-transporting channels and show defective
auxin-induced vasculature formation and regeneration. An ABP1(M2X) variant that
lacks the capacity to bind auxin is unable to complement these defects in abp1
mutants. These data indicate that ABP1 is the auxin receptor for TMK1-based cell-surface
signalling, which mediates the global phospho-response and auxin canalization.
acknowledged_ssus:
- _id: Bio
- _id: EM-Fac
- _id: LifeSc
acknowledgement: We acknowledge K. Kubiasová for excellent technical assistance, J.
Neuhold, A. Lehner and A. Sedivy for technical assistance with protein production
and purification at Vienna Biocenter Core Facilities; Creoptix for performing GCI;
and the Bioimaging, Electron Microscopy and Life Science Facilities at ISTA, the
Plant Sciences Core Facility of CEITEC Masaryk University, the Core Facility CELLIM
(MEYS CR, LM2018129 Czech-BioImaging) and J. Sprakel for their assistance. J.F.
is grateful to R. Napier for many insightful suggestions and support. We thank all
past and present members of the Friml group for their support and for other contributions
to this effort to clarify the controversial role of ABP1 over the past seven years.
The project received funding from the European Research Council (ERC) under the
European Union’s Horizon 2020 research and innovation program (grant agreement no.
742985 to J.F. and 833867 to D.W.); the Austrian Science Fund (FWF; P29988 to J.F.);
the Netherlands Organization for Scientific Research (NWO; VICI grant 865.14.001
to D.W. and VENI grant VI.Veni.212.003 to A.K.); the Ministry of Education, Science
and Technological Development of the Republic of Serbia (contract no. 451-03-68/2022-14/200053
to B.D.Ž.); and the MEXT/JSPS KAKENHI to K.T. (20K06685) and T.K. (20H05687 and
20H05910).
article_processing_charge: No
article_type: original
author:
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Michelle C
full_name: Gallei, Michelle C
id: 35A03822-F248-11E8-B48F-1D18A9856A87
last_name: Gallei
orcid: 0000-0003-1286-7368
- first_name: Zuzana
full_name: Gelová, Zuzana
id: 0AE74790-0E0B-11E9-ABC7-1ACFE5697425
last_name: Gelová
orcid: 0000-0003-4783-1752
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Ewa
full_name: Mazur, Ewa
last_name: Mazur
- first_name: Aline
full_name: Monzer, Aline
id: 2DB5D88C-D7B3-11E9-B8FD-7907E6697425
last_name: Monzer
- first_name: Lesia
full_name: Rodriguez Solovey, Lesia
id: 3922B506-F248-11E8-B48F-1D18A9856A87
last_name: Rodriguez Solovey
orcid: 0000-0002-7244-7237
- first_name: Mark
full_name: Roosjen, Mark
last_name: Roosjen
- first_name: Inge
full_name: Verstraeten, Inge
id: 362BF7FE-F248-11E8-B48F-1D18A9856A87
last_name: Verstraeten
orcid: 0000-0001-7241-2328
- first_name: Branka D.
full_name: Živanović, Branka D.
last_name: Živanović
- first_name: Minxia
full_name: Zou, Minxia
id: 5c243f41-03f3-11ec-841c-96faf48a7ef9
last_name: Zou
- first_name: Lukas
full_name: Fiedler, Lukas
id: 7c417475-8972-11ed-ae7b-8b674ca26986
last_name: Fiedler
- first_name: Caterina
full_name: Giannini, Caterina
id: e3fdddd5-f6e0-11ea-865d-ca99ee6367f4
last_name: Giannini
- first_name: Peter
full_name: Grones, Peter
last_name: Grones
- first_name: Mónika
full_name: Hrtyan, Mónika
id: 45A71A74-F248-11E8-B48F-1D18A9856A87
last_name: Hrtyan
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Andre
full_name: Kuhn, Andre
last_name: Kuhn
- first_name: Madhumitha
full_name: Narasimhan, Madhumitha
id: 44BF24D0-F248-11E8-B48F-1D18A9856A87
last_name: Narasimhan
orcid: 0000-0002-8600-0671
- first_name: Marek
full_name: Randuch, Marek
id: 6ac4636d-15b2-11ec-abd3-fb8df79972ae
last_name: Randuch
- first_name: Nikola
full_name: Rýdza, Nikola
last_name: Rýdza
- first_name: Koji
full_name: Takahashi, Koji
last_name: Takahashi
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Anastasiia
full_name: Teplova, Anastasiia
id: e3736151-106c-11ec-b916-c2558e2762c6
last_name: Teplova
- first_name: Toshinori
full_name: Kinoshita, Toshinori
last_name: Kinoshita
- first_name: Dolf
full_name: Weijers, Dolf
last_name: Weijers
- first_name: Hana
full_name: Rakusová, Hana
last_name: Rakusová
citation:
ama: Friml J, Gallei MC, Gelová Z, et al. ABP1–TMK auxin perception for global phosphorylation
and auxin canalization. Nature. 2022;609(7927):575-581. doi:10.1038/s41586-022-05187-x
apa: Friml, J., Gallei, M. C., Gelová, Z., Johnson, A. J., Mazur, E., Monzer, A.,
… Rakusová, H. (2022). ABP1–TMK auxin perception for global phosphorylation and
auxin canalization. Nature. Springer Nature. https://doi.org/10.1038/s41586-022-05187-x
chicago: Friml, Jiří, Michelle C Gallei, Zuzana Gelová, Alexander J Johnson, Ewa
Mazur, Aline Monzer, Lesia Rodriguez Solovey, et al. “ABP1–TMK Auxin Perception
for Global Phosphorylation and Auxin Canalization.” Nature. Springer Nature,
2022. https://doi.org/10.1038/s41586-022-05187-x.
ieee: J. Friml et al., “ABP1–TMK auxin perception for global phosphorylation
and auxin canalization,” Nature, vol. 609, no. 7927. Springer Nature, pp.
575–581, 2022.
ista: Friml J, Gallei MC, Gelová Z, Johnson AJ, Mazur E, Monzer A, Rodriguez Solovey
L, Roosjen M, Verstraeten I, Živanović BD, Zou M, Fiedler L, Giannini C, Grones
P, Hrtyan M, Kaufmann W, Kuhn A, Narasimhan M, Randuch M, Rýdza N, Takahashi K,
Tan S, Teplova A, Kinoshita T, Weijers D, Rakusová H. 2022. ABP1–TMK auxin perception
for global phosphorylation and auxin canalization. Nature. 609(7927), 575–581.
mla: Friml, Jiří, et al. “ABP1–TMK Auxin Perception for Global Phosphorylation and
Auxin Canalization.” Nature, vol. 609, no. 7927, Springer Nature, 2022,
pp. 575–81, doi:10.1038/s41586-022-05187-x.
short: J. Friml, M.C. Gallei, Z. Gelová, A.J. Johnson, E. Mazur, A. Monzer, L. Rodriguez
Solovey, M. Roosjen, I. Verstraeten, B.D. Živanović, M. Zou, L. Fiedler, C. Giannini,
P. Grones, M. Hrtyan, W. Kaufmann, A. Kuhn, M. Narasimhan, M. Randuch, N. Rýdza,
K. Takahashi, S. Tan, A. Teplova, T. Kinoshita, D. Weijers, H. Rakusová, Nature
609 (2022) 575–581.
date_created: 2023-01-16T10:04:48Z
date_published: 2022-09-15T00:00:00Z
date_updated: 2023-11-07T08:16:09Z
day: '15'
ddc:
- '580'
department:
- _id: JiFr
- _id: GradSch
- _id: EvBe
- _id: EM-Fac
doi: 10.1038/s41586-022-05187-x
ec_funded: 1
external_id:
isi:
- '000851357500002'
pmid:
- '36071161'
file:
- access_level: open_access
checksum: a6055c606aefb900bf62ae3e7d15f921
content_type: application/pdf
creator: amally
date_created: 2023-11-02T17:12:37Z
date_updated: 2023-11-02T17:12:37Z
file_id: '14483'
file_name: Friml Nature 2022_merged.pdf
file_size: 79774945
relation: main_file
success: 1
file_date_updated: 2023-11-02T17:12:37Z
has_accepted_license: '1'
intvolume: ' 609'
isi: 1
issue: '7927'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Submitted Version
page: 575-581
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 262EF96E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29988
name: RNA-directed DNA methylation in plant development
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: ABP1–TMK auxin perception for global phosphorylation and auxin canalization
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 609
year: '2022'
...
---
_id: '9794'
abstract:
- lang: eng
text: 'Lymph nodes (LNs) comprise two main structural elements: fibroblastic reticular
cells that form dedicated niches for immune cell interaction and capsular fibroblasts
that build a shell around the organ. Immunological challenge causes LNs to increase
more than tenfold in size within a few days. Here, we characterized the biomechanics
of LN swelling on the cellular and organ scale. We identified lymphocyte trapping
by influx and proliferation as drivers of an outward pressure force, causing fibroblastic
reticular cells of the T-zone (TRCs) and their associated conduits to stretch.
After an initial phase of relaxation, TRCs sensed the resulting strain through
cell matrix adhesions, which coordinated local growth and remodeling of the stromal
network. While the expanded TRC network readopted its typical configuration, a
massive fibrotic reaction of the organ capsule set in and countered further organ
expansion. Thus, different fibroblast populations mechanically control LN swelling
in a multitier fashion.'
acknowledged_ssus:
- _id: Bio
- _id: EM-Fac
- _id: PreCl
- _id: LifeSc
acknowledgement: This research was supported by the Scientific Service Units of IST
Austria through resources provided by the Imaging and Optics, Electron Microscopy,
Preclinical and Life Science Facilities. We thank C. Moussion for providing anti-PNAd
antibody and D. Critchley for Talin1-floxed mice, and E. Papusheva for providing
a custom 3D channel alignment script. This work was supported by a European Research
Council grant ERC-CoG-72437 to M.S. M.H. was supported by Czech Sciencundation GACR
20-24603Y and Charles University PRIMUS/20/MED/013.
article_processing_charge: No
article_type: original
author:
- first_name: Frank P
full_name: Assen, Frank P
id: 3A8E7F24-F248-11E8-B48F-1D18A9856A87
last_name: Assen
orcid: 0000-0003-3470-6119
- first_name: Jun
full_name: Abe, Jun
last_name: Abe
- first_name: Miroslav
full_name: Hons, Miroslav
id: 4167FE56-F248-11E8-B48F-1D18A9856A87
last_name: Hons
orcid: 0000-0002-6625-3348
- first_name: Robert
full_name: Hauschild, Robert
id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
last_name: Hauschild
orcid: 0000-0001-9843-3522
- first_name: Shayan
full_name: Shamipour, Shayan
id: 40B34FE2-F248-11E8-B48F-1D18A9856A87
last_name: Shamipour
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Gabriel
full_name: Krens, Gabriel
id: 2B819732-F248-11E8-B48F-1D18A9856A87
last_name: Krens
orcid: 0000-0003-4761-5996
- first_name: Markus
full_name: Brown, Markus
id: 3DAB9AFC-F248-11E8-B48F-1D18A9856A87
last_name: Brown
- first_name: Burkhard
full_name: Ludewig, Burkhard
last_name: Ludewig
- first_name: Simon
full_name: Hippenmeyer, Simon
id: 37B36620-F248-11E8-B48F-1D18A9856A87
last_name: Hippenmeyer
orcid: 0000-0003-2279-1061
- 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
- first_name: Wolfgang
full_name: Weninger, Wolfgang
last_name: Weninger
- first_name: Edouard B
full_name: Hannezo, Edouard B
id: 3A9DB764-F248-11E8-B48F-1D18A9856A87
last_name: Hannezo
orcid: 0000-0001-6005-1561
- first_name: Sanjiv A.
full_name: Luther, Sanjiv A.
last_name: Luther
- first_name: Jens V.
full_name: Stein, Jens V.
last_name: Stein
- first_name: Michael K
full_name: Sixt, Michael K
id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
last_name: Sixt
orcid: 0000-0002-4561-241X
citation:
ama: Assen FP, Abe J, Hons M, et al. Multitier mechanics control stromal adaptations
in swelling lymph nodes. Nature Immunology. 2022;23:1246-1255. doi:10.1038/s41590-022-01257-4
apa: Assen, F. P., Abe, J., Hons, M., Hauschild, R., Shamipour, S., Kaufmann, W.,
… Sixt, M. K. (2022). Multitier mechanics control stromal adaptations in swelling
lymph nodes. Nature Immunology. Springer Nature. https://doi.org/10.1038/s41590-022-01257-4
chicago: Assen, Frank P, Jun Abe, Miroslav Hons, Robert Hauschild, Shayan Shamipour,
Walter Kaufmann, Tommaso Costanzo, et al. “Multitier Mechanics Control Stromal
Adaptations in Swelling Lymph Nodes.” Nature Immunology. Springer Nature,
2022. https://doi.org/10.1038/s41590-022-01257-4.
ieee: F. P. Assen et al., “Multitier mechanics control stromal adaptations
in swelling lymph nodes,” Nature Immunology, vol. 23. Springer Nature,
pp. 1246–1255, 2022.
ista: Assen FP, Abe J, Hons M, Hauschild R, Shamipour S, Kaufmann W, Costanzo T,
Krens G, Brown M, Ludewig B, Hippenmeyer S, Heisenberg C-PJ, Weninger W, Hannezo
EB, Luther SA, Stein JV, Sixt MK. 2022. Multitier mechanics control stromal adaptations
in swelling lymph nodes. Nature Immunology. 23, 1246–1255.
mla: Assen, Frank P., et al. “Multitier Mechanics Control Stromal Adaptations in
Swelling Lymph Nodes.” Nature Immunology, vol. 23, Springer Nature, 2022,
pp. 1246–55, doi:10.1038/s41590-022-01257-4.
short: F.P. Assen, J. Abe, M. Hons, R. Hauschild, S. Shamipour, W. Kaufmann, T.
Costanzo, G. Krens, M. Brown, B. Ludewig, S. Hippenmeyer, C.-P.J. Heisenberg,
W. Weninger, E.B. Hannezo, S.A. Luther, J.V. Stein, M.K. Sixt, Nature Immunology
23 (2022) 1246–1255.
date_created: 2021-08-06T09:09:11Z
date_published: 2022-07-11T00:00:00Z
date_updated: 2023-08-02T06:53:07Z
day: '11'
ddc:
- '570'
department:
- _id: SiHi
- _id: CaHe
- _id: EdHa
- _id: EM-Fac
- _id: Bio
- _id: MiSi
doi: 10.1038/s41590-022-01257-4
ec_funded: 1
external_id:
isi:
- '000822975900002'
file:
- access_level: open_access
checksum: 628e7b49809f22c75b428842efe70c68
content_type: application/pdf
creator: dernst
date_created: 2022-07-25T07:11:32Z
date_updated: 2022-07-25T07:11:32Z
file_id: '11642'
file_name: 2022_NatureImmunology_Assen.pdf
file_size: 11475325
relation: main_file
success: 1
file_date_updated: 2022-07-25T07:11:32Z
has_accepted_license: '1'
intvolume: ' 23'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 1246-1255
project:
- _id: 25FE9508-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '724373'
name: Cellular navigation along spatial gradients
publication: Nature Immunology
publication_identifier:
eissn:
- 1529-2916
issn:
- 1529-2908
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Multitier mechanics control stromal adaptations in swelling lymph nodes
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: 23
year: '2022'
...
---
_id: '8582'
abstract:
- lang: eng
text: "Cell and tissue polarization is fundamental for plant growth and morphogenesis.
The polar, cellular localization of Arabidopsis PIN‐FORMED (PIN) proteins is crucial
for their function in directional auxin transport. The clustering of PIN polar
cargoes within the plasma membrane has been proposed to be important for the maintenance
of their polar distribution. However, the more detailed features of PIN clusters
and the cellular requirements of cargo clustering remain unclear.\r\nHere, we
characterized PIN clusters in detail by means of multiple advanced microscopy
and quantification methods, such as 3D quantitative imaging or freeze‐fracture
replica labeling. The size and aggregation types of PIN clusters were determined
by electron microscopy at the nanometer level at different polar domains and at
different developmental stages, revealing a strong preference for clustering at
the polar domains.\r\nPharmacological and genetic studies revealed that PIN clusters
depend on phosphoinositol pathways, cytoskeletal structures and specific cell‐wall
components as well as connections between the cell wall and the plasma membrane.\r\nThis
study identifies the role of different cellular processes and structures in polar
cargo clustering and provides initial mechanistic insight into the maintenance
of polarity in plants and other systems."
acknowledged_ssus:
- _id: Bio
acknowledgement: We thank Dr Ingo Heilmann (Martin‐Luther‐University Halle‐Wittenberg)
for the XVE>>PIP5K1‐YFP line, Dr Brad Day (Michigan State University) for the ndr1‐1
mutant and the complementation lines, and Dr Patricia C. Zambryski (University of
California, Berkeley) for the 35S::P30‐GFP line, the Bioimaging team (IST Austria)
for assistance with imaging, group members for discussions, Martine De Cock for
help in preparing the manuscript and Nataliia Gnyliukh for critical reading and
revision of the manuscript. This project received funding from the European Research
Council (ERC) under the European Union's Horizon 2020 research and innovation program
(grant agreement No. 742985) and Comisión Nacional de Investigación Científica y
Tecnológica (Project CONICYT‐PAI 82130047). DvW received funding from the People
Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme
(FP7/2007‐2013) under REA grant agreement no. 291734.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Hongjiang
full_name: Li, Hongjiang
id: 33CA54A6-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0001-5039-9660
- first_name: Daniel
full_name: von Wangenheim, Daniel
id: 49E91952-F248-11E8-B48F-1D18A9856A87
last_name: von Wangenheim
orcid: 0000-0002-6862-1247
- first_name: Xixi
full_name: Zhang, Xixi
id: 61A66458-47E9-11EA-85BA-8AEAAF14E49A
last_name: Zhang
orcid: 0000-0001-7048-4627
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Nasser
full_name: Darwish-Miranda, Nasser
id: 39CD9926-F248-11E8-B48F-1D18A9856A87
last_name: Darwish-Miranda
orcid: 0000-0002-8821-8236
- first_name: Satoshi
full_name: Naramoto, Satoshi
last_name: Naramoto
- first_name: Krzysztof T
full_name: Wabnik, Krzysztof T
id: 4DE369A4-F248-11E8-B48F-1D18A9856A87
last_name: Wabnik
orcid: 0000-0001-7263-0560
- first_name: Riet
full_name: de Rycke, Riet
last_name: de Rycke
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Daniel J
full_name: Gütl, Daniel J
id: 381929CE-F248-11E8-B48F-1D18A9856A87
last_name: Gütl
- first_name: Ricardo
full_name: Tejos, Ricardo
last_name: Tejos
- first_name: Peter
full_name: Grones, Peter
id: 399876EC-F248-11E8-B48F-1D18A9856A87
last_name: Grones
- first_name: Meiyu
full_name: Ke, Meiyu
last_name: Ke
- first_name: Xu
full_name: Chen, Xu
id: 4E5ADCAA-F248-11E8-B48F-1D18A9856A87
last_name: Chen
- first_name: Jan
full_name: Dettmer, Jan
last_name: Dettmer
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Li H, von Wangenheim D, Zhang X, et al. Cellular requirements for PIN polar
cargo clustering in Arabidopsis thaliana. New Phytologist. 2021;229(1):351-369.
doi:10.1111/nph.16887
apa: Li, H., von Wangenheim, D., Zhang, X., Tan, S., Darwish-Miranda, N., Naramoto,
S., … Friml, J. (2021). Cellular requirements for PIN polar cargo clustering in
Arabidopsis thaliana. New Phytologist. Wiley. https://doi.org/10.1111/nph.16887
chicago: Li, Hongjiang, Daniel von Wangenheim, Xixi Zhang, Shutang Tan, Nasser Darwish-Miranda,
Satoshi Naramoto, Krzysztof T Wabnik, et al. “Cellular Requirements for PIN Polar
Cargo Clustering in Arabidopsis Thaliana.” New Phytologist. Wiley, 2021.
https://doi.org/10.1111/nph.16887.
ieee: H. Li et al., “Cellular requirements for PIN polar cargo clustering
in Arabidopsis thaliana,” New Phytologist, vol. 229, no. 1. Wiley, pp.
351–369, 2021.
ista: Li H, von Wangenheim D, Zhang X, Tan S, Darwish-Miranda N, Naramoto S, Wabnik
KT, de Rycke R, Kaufmann W, Gütl DJ, Tejos R, Grones P, Ke M, Chen X, Dettmer
J, Friml J. 2021. Cellular requirements for PIN polar cargo clustering in Arabidopsis
thaliana. New Phytologist. 229(1), 351–369.
mla: Li, Hongjiang, et al. “Cellular Requirements for PIN Polar Cargo Clustering
in Arabidopsis Thaliana.” New Phytologist, vol. 229, no. 1, Wiley, 2021,
pp. 351–69, doi:10.1111/nph.16887.
short: H. Li, D. von Wangenheim, X. Zhang, S. Tan, N. Darwish-Miranda, S. Naramoto,
K.T. Wabnik, R. de Rycke, W. Kaufmann, D.J. Gütl, R. Tejos, P. Grones, M. Ke,
X. Chen, J. Dettmer, J. Friml, New Phytologist 229 (2021) 351–369.
date_created: 2020-09-28T08:59:28Z
date_published: 2021-01-01T00:00:00Z
date_updated: 2023-08-04T11:01:21Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
- _id: EM-Fac
- _id: Bio
- _id: EvBe
doi: 10.1111/nph.16887
ec_funded: 1
external_id:
isi:
- '000570187900001'
file:
- access_level: open_access
checksum: b45621607b4cab97eeb1605ab58e896e
content_type: application/pdf
creator: dernst
date_created: 2021-02-04T09:44:17Z
date_updated: 2021-02-04T09:44:17Z
file_id: '9084'
file_name: 2021_NewPhytologist_Li.pdf
file_size: 4061962
relation: main_file
success: 1
file_date_updated: 2021-02-04T09:44:17Z
has_accepted_license: '1'
intvolume: ' 229'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 351-369
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: New Phytologist
publication_identifier:
eissn:
- '14698137'
issn:
- 0028646X
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Cellular requirements for PIN polar cargo clustering in Arabidopsis thaliana
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: 229
year: '2021'
...
---
_id: '9330'
abstract:
- lang: eng
text: In nerve cells the genes encoding for α2δ subunits of voltage-gated calcium
channels have been linked to synaptic functions and neurological disease. Here
we show that α2δ subunits are essential for the formation and organization of
glutamatergic synapses. Using a cellular α2δ subunit triple-knockout/knockdown
model, we demonstrate a failure in presynaptic differentiation evidenced by defective
presynaptic calcium channel clustering and calcium influx, smaller presynaptic
active zones, and a strongly reduced accumulation of presynaptic vesicle-associated
proteins (synapsin and vGLUT). The presynaptic defect is associated with the downscaling
of postsynaptic AMPA receptors and the postsynaptic density. The role of α2δ isoforms
as synaptic organizers is highly redundant, as each individual α2δ isoform can
rescue presynaptic calcium channel trafficking and expression of synaptic proteins.
Moreover, α2δ-2 and α2δ-3 with mutated metal ion-dependent adhesion sites can
fully rescue presynaptic synapsin expression but only partially calcium channel
trafficking, suggesting that the regulatory role of α2δ subunits is independent
from its role as a calcium channel subunit. Our findings influence the current
view on excitatory synapse formation. First, our study suggests that postsynaptic
differentiation is secondary to presynaptic differentiation. Second, the dependence
of presynaptic differentiation on α2δ implicates α2δ subunits as potential nucleation
points for the organization of synapses. Finally, our results suggest that α2δ
subunits act as transsynaptic organizers of glutamatergic synapses, thereby aligning
the synaptic active zone with the postsynaptic density.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: "We thank Arnold Schwartz for providing α2δ-1 knockout mice; Ariane
Benedetti, Sabine Baumgartner, Sandra Demetz, and Irene Mahlknecht for technical
support; Nadine Ortner and Andreas Lieb for electrophysiological experiments; the
team of the Electron Microscopy Facility at the Institute of Science and Technology
Austria for technical support related to ultrastructural analysis; Hermann Dietrich
and Anja Beierfuß and her team for animal care; Jutta Engel and Jörg Striessnig
for critical discussions; and Bruno Benedetti and Bernhard Flucher for critical
discussions and reading the manuscript. This study was supported by Austrian Science
Fund Grants P24079, F44060, F44150, and DOC30-B30 (to G.J.O.) and T855 (to M.C.),
European Research Council Grant AdG 694539 (to R.S.), Deutsche Forschungsgemeinschaft\r\nGrant
SFB1348-TP A03 (to M.M.), and Interdisziplinäre Zentrum für Klinische Forschung
Münster Grant Mi3/004/19 (to M.M.). This work is part of the PhD theses of C.L.S.,
S.M.G., and C.A."
article_processing_charge: No
article_type: original
author:
- first_name: Clemens L.
full_name: Schöpf, Clemens L.
last_name: Schöpf
- first_name: Cornelia
full_name: Ablinger, Cornelia
last_name: Ablinger
- first_name: Stefanie M.
full_name: Geisler, Stefanie M.
last_name: Geisler
- first_name: Ruslan I.
full_name: Stanika, Ruslan I.
last_name: Stanika
- first_name: Marta
full_name: Campiglio, Marta
last_name: Campiglio
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Benedikt
full_name: Nimmervoll, Benedikt
last_name: Nimmervoll
- first_name: Bettina
full_name: Schlick, Bettina
last_name: Schlick
- first_name: Johannes
full_name: Brockhaus, Johannes
last_name: Brockhaus
- first_name: Markus
full_name: Missler, Markus
last_name: Missler
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
- first_name: Gerald J.
full_name: Obermair, Gerald J.
last_name: Obermair
citation:
ama: Schöpf CL, Ablinger C, Geisler SM, et al. Presynaptic α2δ subunits are key
organizers of glutamatergic synapses. PNAS. 2021;118(14). doi:10.1073/pnas.1920827118
apa: Schöpf, C. L., Ablinger, C., Geisler, S. M., Stanika, R. I., Campiglio, M.,
Kaufmann, W., … Obermair, G. J. (2021). Presynaptic α2δ subunits are key organizers
of glutamatergic synapses. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1920827118
chicago: Schöpf, Clemens L., Cornelia Ablinger, Stefanie M. Geisler, Ruslan I. Stanika,
Marta Campiglio, Walter Kaufmann, Benedikt Nimmervoll, et al. “Presynaptic Α2δ
Subunits Are Key Organizers of Glutamatergic Synapses.” PNAS. National
Academy of Sciences, 2021. https://doi.org/10.1073/pnas.1920827118.
ieee: C. L. Schöpf et al., “Presynaptic α2δ subunits are key organizers of
glutamatergic synapses,” PNAS, vol. 118, no. 14. National Academy of Sciences,
2021.
ista: Schöpf CL, Ablinger C, Geisler SM, Stanika RI, Campiglio M, Kaufmann W, Nimmervoll
B, Schlick B, Brockhaus J, Missler M, Shigemoto R, Obermair GJ. 2021. Presynaptic
α2δ subunits are key organizers of glutamatergic synapses. PNAS. 118(14).
mla: Schöpf, Clemens L., et al. “Presynaptic Α2δ Subunits Are Key Organizers of
Glutamatergic Synapses.” PNAS, vol. 118, no. 14, National Academy of Sciences,
2021, doi:10.1073/pnas.1920827118.
short: C.L. Schöpf, C. Ablinger, S.M. Geisler, R.I. Stanika, M. Campiglio, W. Kaufmann,
B. Nimmervoll, B. Schlick, J. Brockhaus, M. Missler, R. Shigemoto, G.J. Obermair,
PNAS 118 (2021).
date_created: 2021-04-18T22:01:40Z
date_published: 2021-04-06T00:00:00Z
date_updated: 2023-08-08T13:08:47Z
day: '06'
ddc:
- '570'
department:
- _id: EM-Fac
- _id: RySh
doi: 10.1073/pnas.1920827118
ec_funded: 1
external_id:
isi:
- '000637398300002'
file:
- access_level: open_access
checksum: dd014f68ae9d7d8d8fc4139a24e04506
content_type: application/pdf
creator: dernst
date_created: 2021-04-19T10:10:56Z
date_updated: 2021-04-19T10:10:56Z
file_id: '9340'
file_name: 2021_PNAS_Schoepf.pdf
file_size: 2603911
relation: main_file
success: 1
file_date_updated: 2021-04-19T10:10:56Z
has_accepted_license: '1'
intvolume: ' 118'
isi: 1
issue: '14'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694539'
name: 'In situ analysis of single channel subunit composition in neurons: physiological
implication in synaptic plasticity and behaviour'
publication: PNAS
publication_identifier:
eissn:
- 1091-6490
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Presynaptic α2δ subunits are key organizers of glutamatergic 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: 118
year: '2021'
...
---
_id: '10607'
abstract:
- lang: eng
text: The evidence linking innate immunity mechanisms and neurodegenerative diseases
is growing, but the specific mechanisms are incompletely understood. Experimental
data suggest that microglial TLR4 mediates the uptake and clearance of α-synuclein
also termed synucleinophagy. The accumulation of misfolded α-synuclein throughout
the brain is central to Parkinson's disease (PD). The distribution and progression
of the pathology is often attributed to the propagation of α-synuclein. Here,
we apply a classical α-synuclein propagation model of prodromal PD in wild type
and TLR4 deficient mice to study the role of TLR4 in the progression of the disease.
Our data suggest that TLR4 deficiency facilitates the α-synuclein seed spreading
associated with reduced lysosomal activity of microglia. Three months after seed
inoculation, more pronounced proteinase K-resistant α-synuclein inclusion pathology
is observed in mice with TLR4 deficiency. The facilitated propagation of α-synuclein
is associated with early loss of dopamine transporter (DAT) signal in the striatum
and loss of dopaminergic neurons in substantia nigra pars compacta of TLR4 deficient
mice. These new results support TLR4 signaling as a putative target for disease
modification to slow the progression of PD and related disorders.
acknowledgement: This study was supported by grants of the Austrian Science Fund (FWF)
F4414 and W1206-08. Electron microscopy was performed at the Scientific Service
Units (SSU) of IST-Austria through resources provided by the Electron Microscopy
Facility.
article_processing_charge: No
article_type: original
author:
- first_name: Serena
full_name: Venezia, Serena
last_name: Venezia
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Gregor K.
full_name: Wenning, Gregor K.
last_name: Wenning
- first_name: Nadia
full_name: Stefanova, Nadia
last_name: Stefanova
citation:
ama: Venezia S, Kaufmann W, Wenning GK, Stefanova N. Toll-like receptor 4 deficiency
facilitates α-synuclein propagation and neurodegeneration in a mouse model of
prodromal Parkinson’s disease. Parkinsonism & Related Disorders. 2021;91:59-65.
doi:10.1016/j.parkreldis.2021.09.007
apa: Venezia, S., Kaufmann, W., Wenning, G. K., & Stefanova, N. (2021). Toll-like
receptor 4 deficiency facilitates α-synuclein propagation and neurodegeneration
in a mouse model of prodromal Parkinson’s disease. Parkinsonism & Related
Disorders. Elsevier. https://doi.org/10.1016/j.parkreldis.2021.09.007
chicago: Venezia, Serena, Walter Kaufmann, Gregor K. Wenning, and Nadia Stefanova.
“Toll-like Receptor 4 Deficiency Facilitates α-Synuclein Propagation and Neurodegeneration
in a Mouse Model of Prodromal Parkinson’s Disease.” Parkinsonism & Related
Disorders. Elsevier, 2021. https://doi.org/10.1016/j.parkreldis.2021.09.007.
ieee: S. Venezia, W. Kaufmann, G. K. Wenning, and N. Stefanova, “Toll-like receptor
4 deficiency facilitates α-synuclein propagation and neurodegeneration in a mouse
model of prodromal Parkinson’s disease,” Parkinsonism & Related Disorders,
vol. 91. Elsevier, pp. 59–65, 2021.
ista: Venezia S, Kaufmann W, Wenning GK, Stefanova N. 2021. Toll-like receptor 4
deficiency facilitates α-synuclein propagation and neurodegeneration in a mouse
model of prodromal Parkinson’s disease. Parkinsonism & Related Disorders.
91, 59–65.
mla: Venezia, Serena, et al. “Toll-like Receptor 4 Deficiency Facilitates α-Synuclein
Propagation and Neurodegeneration in a Mouse Model of Prodromal Parkinson’s Disease.”
Parkinsonism & Related Disorders, vol. 91, Elsevier, 2021, pp. 59–65,
doi:10.1016/j.parkreldis.2021.09.007.
short: S. Venezia, W. Kaufmann, G.K. Wenning, N. Stefanova, Parkinsonism & Related
Disorders 91 (2021) 59–65.
date_created: 2022-01-09T23:01:26Z
date_published: 2021-10-01T00:00:00Z
date_updated: 2023-08-17T06:36:01Z
day: '01'
ddc:
- '610'
department:
- _id: EM-Fac
doi: 10.1016/j.parkreldis.2021.09.007
external_id:
isi:
- '000701142900012'
pmid:
- '34530328'
file:
- access_level: open_access
checksum: 360681585acb51e80d17c6b213c56b55
content_type: application/pdf
creator: alisjak
date_created: 2022-01-10T13:41:40Z
date_updated: 2022-01-10T13:41:40Z
file_id: '10612'
file_name: 2021_Parkinsonism_Venezia.pdf
file_size: 6848513
relation: main_file
success: 1
file_date_updated: 2022-01-10T13:41:40Z
has_accepted_license: '1'
intvolume: ' 91'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 59-65
pmid: 1
publication: Parkinsonism & Related Disorders
publication_identifier:
eissn:
- 1873-5126
issn:
- 1353-8020
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Toll-like receptor 4 deficiency facilitates α-synuclein propagation and neurodegeneration
in a mouse model of prodromal Parkinson's disease
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: 91
year: '2021'
...
---
_id: '9756'
abstract:
- lang: eng
text: High-resolution visualization and quantification of membrane proteins contribute
to the understanding of their functions and the roles they play in physiological
and pathological conditions. Sodium dodecyl sulfate-digested freeze-fracture replica
labeling (SDS-FRL) is a powerful electron microscopy method to study quantitatively
the two-dimensional distribution of transmembrane proteins and their tightly associated
proteins. During treatment with SDS, intracellular organelles and proteins not
anchored to the replica are dissolved, whereas integral membrane proteins captured
and stabilized by carbon/platinum deposition remain on the replica. Their intra-
and extracellular domains become exposed on the surface of the replica, facilitating
the accessibility of antibodies and, therefore, providing higher labeling efficiency
than those obtained with other immunoelectron microscopy techniques. In this chapter,
we describe the protocols of SDS-FRL adapted for mammalian brain samples, and
optimization of the SDS treatment to increase the labeling efficiency for quantification
of Cav2.1, the alpha subunit of P/Q-type voltage-dependent calcium channels utilizing
deep learning algorithms.
acknowledgement: This work was supported by the European Union (European Research
Council Advanced grant no. 694539 and Human Brain Project Ref. 720270 to R. S.)
and the Austrian Academy of Sciences (DOC fellowship to D.K.).
alternative_title:
- Neuromethods
article_processing_charge: No
author:
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: David
full_name: Kleindienst, David
id: 42E121A4-F248-11E8-B48F-1D18A9856A87
last_name: Kleindienst
- first_name: Harumi
full_name: Harada, Harumi
id: 2E55CDF2-F248-11E8-B48F-1D18A9856A87
last_name: Harada
orcid: 0000-0001-7429-7896
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
citation:
ama: 'Kaufmann W, Kleindienst D, Harada H, Shigemoto R. High-Resolution localization
and quantitation of membrane proteins by SDS-digested freeze-fracture replica
labeling (SDS-FRL). In: Receptor and Ion Channel Detection in the Brain.
Vol 169. Neuromethods. New York: Humana; 2021:267-283. doi:10.1007/978-1-0716-1522-5_19'
apa: 'Kaufmann, W., Kleindienst, D., Harada, H., & Shigemoto, R. (2021). High-Resolution
localization and quantitation of membrane proteins by SDS-digested freeze-fracture
replica labeling (SDS-FRL). In Receptor and Ion Channel Detection in the Brain
(Vol. 169, pp. 267–283). New York: Humana. https://doi.org/10.1007/978-1-0716-1522-5_19'
chicago: 'Kaufmann, Walter, David Kleindienst, Harumi Harada, and Ryuichi Shigemoto.
“High-Resolution Localization and Quantitation of Membrane Proteins by SDS-Digested
Freeze-Fracture Replica Labeling (SDS-FRL).” In Receptor and Ion Channel Detection
in the Brain, 169:267–83. Neuromethods. New York: Humana, 2021. https://doi.org/10.1007/978-1-0716-1522-5_19.'
ieee: 'W. Kaufmann, D. Kleindienst, H. Harada, and R. Shigemoto, “High-Resolution
localization and quantitation of membrane proteins by SDS-digested freeze-fracture
replica labeling (SDS-FRL),” in Receptor and Ion Channel Detection in the
Brain, vol. 169, New York: Humana, 2021, pp. 267–283.'
ista: 'Kaufmann W, Kleindienst D, Harada H, Shigemoto R. 2021.High-Resolution localization
and quantitation of membrane proteins by SDS-digested freeze-fracture replica
labeling (SDS-FRL). In: Receptor and Ion Channel Detection in the Brain. Neuromethods,
vol. 169, 267–283.'
mla: Kaufmann, Walter, et al. “High-Resolution Localization and Quantitation of
Membrane Proteins by SDS-Digested Freeze-Fracture Replica Labeling (SDS-FRL).”
Receptor and Ion Channel Detection in the Brain, vol. 169, Humana, 2021,
pp. 267–83, doi:10.1007/978-1-0716-1522-5_19.
short: W. Kaufmann, D. Kleindienst, H. Harada, R. Shigemoto, in:, Receptor and
Ion Channel Detection in the Brain, Humana, New York, 2021, pp. 267–283.
date_created: 2021-07-30T09:34:56Z
date_published: 2021-07-27T00:00:00Z
date_updated: 2024-03-25T23:30:16Z
day: '27'
ddc:
- '573'
department:
- _id: RySh
- _id: EM-Fac
doi: 10.1007/978-1-0716-1522-5_19
ec_funded: 1
has_accepted_license: '1'
intvolume: ' 169'
keyword:
- 'Freeze-fracture replica: Deep learning'
- Immunogold labeling
- Integral membrane protein
- Electron microscopy
language:
- iso: eng
month: '07'
oa_version: None
page: 267-283
place: New York
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694539'
name: 'In situ analysis of single channel subunit composition in neurons: physiological
implication in synaptic plasticity and behaviour'
- _id: 25CBA828-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '720270'
name: Human Brain Project Specific Grant Agreement 1 (HBP SGA 1)
publication: ' Receptor and Ion Channel Detection in the Brain'
publication_identifier:
eisbn:
- '9781071615225'
isbn:
- '9781071615218'
publication_status: published
publisher: Humana
quality_controlled: '1'
related_material:
record:
- id: '9562'
relation: dissertation_contains
status: public
series_title: Neuromethods
status: public
title: High-Resolution localization and quantitation of membrane proteins by SDS-digested
freeze-fracture replica labeling (SDS-FRL)
type: book_chapter
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 169
year: '2021'
...
---
_id: '9887'
abstract:
- lang: eng
text: Clathrin-mediated endocytosis is the major route of entry of cargos into cells
and thus underpins many physiological processes. During endocytosis, an area of
flat membrane is remodeled by proteins to create a spherical vesicle against intracellular
forces. The protein machinery which mediates this membrane bending in plants is
unknown. However, it is known that plant endocytosis is actin independent, thus
indicating that plants utilize a unique mechanism to mediate membrane bending
against high-turgor pressure compared to other model systems. Here, we investigate
the TPLATE complex, a plant-specific endocytosis protein complex. It has been
thought to function as a classical adaptor functioning underneath the clathrin
coat. However, by using biochemical and advanced live microscopy approaches, we
found that TPLATE is peripherally associated with clathrin-coated vesicles and
localizes at the rim of endocytosis events. As this localization is more fitting
to the protein machinery involved in membrane bending during endocytosis, we examined
cells in which the TPLATE complex was disrupted and found that the clathrin structures
present as flat patches. This suggests a requirement of the TPLATE complex for
membrane bending during plant clathrin–mediated endocytosis. Next, we used in
vitro biophysical assays to confirm that the TPLATE complex possesses protein
domains with intrinsic membrane remodeling activity. These results redefine the
role of the TPLATE complex and implicate it as a key component of the evolutionarily
distinct plant endocytosis mechanism, which mediates endocytic membrane bending
against the high-turgor pressure in plant cells.
acknowledged_ssus:
- _id: EM-Fac
- _id: LifeSc
- _id: Bio
acknowledgement: 'We gratefully thank Julie Neveu and Dr. Amanda Barranco of the Grégory
Vert laboratory for help preparing plants in France, Dr. Zuzana Gelova for help
and advice with protoplast generation, Dr. Stéphane Vassilopoulos and Dr. Florian
Schur for advice regarding EM tomography, Alejandro Marquiegui Alvaro for help with
material generation, and Dr. Lukasz Kowalski for generously gifting us the mWasabi
protein. This research was supported by the Scientific Service Units of Institute
of Science and Technology Austria (IST Austria) through resources provided by the
Electron Microscopy Facility, Lab Support Facility (particularly Dorota Jaworska),
and the Bioimaging Facility. We acknowledge the Advanced Microscopy Facility of
the Vienna BioCenter Core Facilities for use of the 3D SIM. For the mass spectrometry
analysis of proteins, we acknowledge the University of Natural Resources and Life
Sciences (BOKU) Core Facility Mass Spectrometry. This work was supported by the
following funds: A.J. is supported by funding from the Austrian Science Fund I3630B25
to J.F. P.M. and E.B. are supported by Agence Nationale de la Recherche ANR-11-EQPX-0029
Morphoscope2 and ANR-10-INBS-04 France BioImaging. S.Y.B. is supported by the NSF
No. 1121998 and 1614915. J.W. and D.V.D. are supported by the European Research
Council Grant 682436 (to D.V.D.), a China Scholarship Council Grant 201508440249
(to J.W.), and by a Ghent University Special Research Co-funding Grant ST01511051
(to J.W.).'
article_number: e2113046118
article_processing_charge: No
article_type: original
author:
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Dana A
full_name: Dahhan, Dana A
last_name: Dahhan
- first_name: Nataliia
full_name: Gnyliukh, Nataliia
id: 390C1120-F248-11E8-B48F-1D18A9856A87
last_name: Gnyliukh
orcid: 0000-0002-2198-0509
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Vanessa
full_name: Zheden, Vanessa
id: 39C5A68A-F248-11E8-B48F-1D18A9856A87
last_name: Zheden
orcid: 0000-0002-9438-4783
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Pierre
full_name: Mahou, Pierre
last_name: Mahou
- first_name: Mónika
full_name: Hrtyan, Mónika
id: 45A71A74-F248-11E8-B48F-1D18A9856A87
last_name: Hrtyan
- first_name: Jie
full_name: Wang, Jie
last_name: Wang
- first_name: Juan L
full_name: Aguilera Servin, Juan L
id: 2A67C376-F248-11E8-B48F-1D18A9856A87
last_name: Aguilera Servin
orcid: 0000-0002-2862-8372
- first_name: Daniël
full_name: van Damme, Daniël
last_name: van Damme
- first_name: Emmanuel
full_name: Beaurepaire, Emmanuel
last_name: Beaurepaire
- first_name: Martin
full_name: Loose, Martin
id: 462D4284-F248-11E8-B48F-1D18A9856A87
last_name: Loose
orcid: 0000-0001-7309-9724
- first_name: Sebastian Y
full_name: Bednarek, Sebastian Y
last_name: Bednarek
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Johnson AJ, Dahhan DA, Gnyliukh N, et al. The TPLATE complex mediates membrane
bending during plant clathrin-mediated endocytosis. Proceedings of the National
Academy of Sciences. 2021;118(51). doi:10.1073/pnas.2113046118
apa: Johnson, A. J., Dahhan, D. A., Gnyliukh, N., Kaufmann, W., Zheden, V., Costanzo,
T., … Friml, J. (2021). The TPLATE complex mediates membrane bending during plant
clathrin-mediated endocytosis. Proceedings of the National Academy of Sciences.
National Academy of Sciences. https://doi.org/10.1073/pnas.2113046118
chicago: Johnson, Alexander J, Dana A Dahhan, Nataliia Gnyliukh, Walter Kaufmann,
Vanessa Zheden, Tommaso Costanzo, Pierre Mahou, et al. “The TPLATE Complex Mediates
Membrane Bending during Plant Clathrin-Mediated Endocytosis.” Proceedings of
the National Academy of Sciences. National Academy of Sciences, 2021. https://doi.org/10.1073/pnas.2113046118.
ieee: A. J. Johnson et al., “The TPLATE complex mediates membrane bending
during plant clathrin-mediated endocytosis,” Proceedings of the National Academy
of Sciences, vol. 118, no. 51. National Academy of Sciences, 2021.
ista: Johnson AJ, Dahhan DA, Gnyliukh N, Kaufmann W, Zheden V, Costanzo T, Mahou
P, Hrtyan M, Wang J, Aguilera Servin JL, van Damme D, Beaurepaire E, Loose M,
Bednarek SY, Friml J. 2021. The TPLATE complex mediates membrane bending during
plant clathrin-mediated endocytosis. Proceedings of the National Academy of Sciences.
118(51), e2113046118.
mla: Johnson, Alexander J., et al. “The TPLATE Complex Mediates Membrane Bending
during Plant Clathrin-Mediated Endocytosis.” Proceedings of the National Academy
of Sciences, vol. 118, no. 51, e2113046118, National Academy of Sciences,
2021, doi:10.1073/pnas.2113046118.
short: A.J. Johnson, D.A. Dahhan, N. Gnyliukh, W. Kaufmann, V. Zheden, T. Costanzo,
P. Mahou, M. Hrtyan, J. Wang, J.L. Aguilera Servin, D. van Damme, E. Beaurepaire,
M. Loose, S.Y. Bednarek, J. Friml, Proceedings of the National Academy of Sciences
118 (2021).
date_created: 2021-08-11T14:11:43Z
date_published: 2021-12-14T00:00:00Z
date_updated: 2024-02-19T11:06:09Z
day: '14'
ddc:
- '580'
department:
- _id: JiFr
- _id: MaLo
- _id: EvBe
- _id: EM-Fac
- _id: NanoFab
doi: 10.1073/pnas.2113046118
external_id:
isi:
- '000736417600043'
pmid:
- '34907016'
file:
- access_level: open_access
checksum: 8d01e72e22c4fb1584e72d8601947069
content_type: application/pdf
creator: cchlebak
date_created: 2021-12-15T08:59:40Z
date_updated: 2021-12-15T08:59:40Z
file_id: '10546'
file_name: 2021_PNAS_Johnson.pdf
file_size: 2757340
relation: main_file
success: 1
file_date_updated: 2021-12-15T08:59:40Z
has_accepted_license: '1'
intvolume: ' 118'
isi: 1
issue: '51'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: Proceedings of the National Academy of Sciences
publication_identifier:
eissn:
- 1091-6490
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
related_material:
link:
- relation: earlier_version
url: https://doi.org/10.1101/2021.04.26.441441
record:
- id: '14510'
relation: dissertation_contains
status: public
- id: '14988'
relation: research_data
status: public
status: public
title: The TPLATE complex mediates membrane bending during plant clathrin-mediated
endocytosis
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: 118
year: '2021'
...
---
_id: '8139'
abstract:
- lang: eng
text: 'Clathrin-mediated endocytosis (CME) is a crucial cellular process implicated
in many aspects of plant growth, development, intra- and inter-cellular signaling,
nutrient uptake and pathogen defense. Despite these significant roles, little
is known about the precise molecular details of how it functions in planta. In
order to facilitate the direct quantitative study of plant CME, here we review
current routinely used methods and present refined, standardized quantitative
imaging protocols which allow the detailed characterization of CME at multiple
scales in plant tissues. These include: (i) an efficient electron microscopy protocol
for the imaging of Arabidopsis CME vesicles in situ, thus providing a method for
the detailed characterization of the ultra-structure of clathrin-coated vesicles;
(ii) a detailed protocol and analysis for quantitative live-cell fluorescence
microscopy to precisely examine the temporal interplay of endocytosis components
during single CME events; (iii) a semi-automated analysis to allow the quantitative
characterization of global internalization of cargos in whole plant tissues; and
(iv) an overview and validation of useful genetic and pharmacological tools to
interrogate the molecular mechanisms and function of CME in intact plant samples.'
acknowledged_ssus:
- _id: EM-Fac
- _id: Bio
acknowledgement: "This paper is dedicated to the memory of Christien Merrifield. He
pioneered quantitative\r\nimaging approaches in mammalian CME and his mentorship
inspired the development of all\r\nthe analysis methods presented here. His joy
in research, pure scientific curiosity and\r\nmicroscopy excellence remain a constant
inspiration. We thank Daniel Van Damme for gifting\r\nus the CLC2-GFP x TPLATE-TagRFP
plants used in this manuscript. We further thank the\r\nScientific Service Units
at IST Austria; specifically, the Electron Microscopy Facility for\r\ntechnical
assistance (in particular Vanessa Zheden) and the BioImaging Facility BioImaging\r\nFacility
for access to equipment. "
article_number: jcs248062
article_processing_charge: No
article_type: original
author:
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Nataliia
full_name: Gnyliukh, Nataliia
id: 390C1120-F248-11E8-B48F-1D18A9856A87
last_name: Gnyliukh
orcid: 0000-0002-2198-0509
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Madhumitha
full_name: Narasimhan, Madhumitha
id: 44BF24D0-F248-11E8-B48F-1D18A9856A87
last_name: Narasimhan
orcid: 0000-0002-8600-0671
- first_name: G
full_name: Vert, G
last_name: Vert
- first_name: SY
full_name: Bednarek, SY
last_name: Bednarek
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Johnson AJ, Gnyliukh N, Kaufmann W, et al. Experimental toolbox for quantitative
evaluation of clathrin-mediated endocytosis in the plant model Arabidopsis. Journal
of Cell Science. 2020;133(15). doi:10.1242/jcs.248062
apa: Johnson, A. J., Gnyliukh, N., Kaufmann, W., Narasimhan, M., Vert, G., Bednarek,
S., & Friml, J. (2020). Experimental toolbox for quantitative evaluation of
clathrin-mediated endocytosis in the plant model Arabidopsis. Journal of Cell
Science. The Company of Biologists. https://doi.org/10.1242/jcs.248062
chicago: Johnson, Alexander J, Nataliia Gnyliukh, Walter Kaufmann, Madhumitha Narasimhan,
G Vert, SY Bednarek, and Jiří Friml. “Experimental Toolbox for Quantitative Evaluation
of Clathrin-Mediated Endocytosis in the Plant Model Arabidopsis.” Journal of
Cell Science. The Company of Biologists, 2020. https://doi.org/10.1242/jcs.248062.
ieee: A. J. Johnson et al., “Experimental toolbox for quantitative evaluation
of clathrin-mediated endocytosis in the plant model Arabidopsis,” Journal of
Cell Science, vol. 133, no. 15. The Company of Biologists, 2020.
ista: Johnson AJ, Gnyliukh N, Kaufmann W, Narasimhan M, Vert G, Bednarek S, Friml
J. 2020. Experimental toolbox for quantitative evaluation of clathrin-mediated
endocytosis in the plant model Arabidopsis. Journal of Cell Science. 133(15),
jcs248062.
mla: Johnson, Alexander J., et al. “Experimental Toolbox for Quantitative Evaluation
of Clathrin-Mediated Endocytosis in the Plant Model Arabidopsis.” Journal of
Cell Science, vol. 133, no. 15, jcs248062, The Company of Biologists, 2020,
doi:10.1242/jcs.248062.
short: A.J. Johnson, N. Gnyliukh, W. Kaufmann, M. Narasimhan, G. Vert, S. Bednarek,
J. Friml, Journal of Cell Science 133 (2020).
date_created: 2020-07-21T08:58:19Z
date_published: 2020-08-06T00:00:00Z
date_updated: 2023-12-01T13:51:07Z
day: '06'
ddc:
- '575'
department:
- _id: JiFr
- _id: EM-Fac
doi: 10.1242/jcs.248062
ec_funded: 1
external_id:
isi:
- '000561047900021'
pmid:
- '32616560'
file:
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date_created: 2020-11-26T17:12:51Z
date_updated: 2021-08-08T22:30:03Z
embargo: 2021-08-07
file_id: '8815'
file_name: 2020 - Johnson - JSC - plant CME toolbox.pdf
file_size: 15150403
relation: main_file
file_date_updated: 2021-08-08T22:30:03Z
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intvolume: ' 133'
isi: 1
issue: '15'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Journal of Cell Science
publication_identifier:
eissn:
- 1477-9137
issn:
- 0021-9533
publication_status: published
publisher: The Company of Biologists
quality_controlled: '1'
related_material:
record:
- id: '14510'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Experimental toolbox for quantitative evaluation of clathrin-mediated endocytosis
in the plant model Arabidopsis
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 133
year: '2020'
...
---
_id: '7490'
abstract:
- lang: eng
text: In plants, clathrin mediated endocytosis (CME) represents the major route
for cargo internalisation from the cell surface. It has been assumed to operate
in an evolutionary conserved manner as in yeast and animals. Here we report characterisation
of ultrastructure, dynamics and mechanisms of plant CME as allowed by our advancement
in electron microscopy and quantitative live imaging techniques. Arabidopsis CME
appears to follow the constant curvature model and the bona fide CME population
generates vesicles of a predominantly hexagonal-basket type; larger and with faster
kinetics than in other models. Contrary to the existing paradigm, actin is dispensable
for CME events at the plasma membrane but plays a unique role in collecting endocytic
vesicles, sorting of internalised cargos and directional endosome movement that
itself actively promote CME events. Internalized vesicles display a strongly delayed
and sequential uncoating. These unique features highlight the independent evolution
of the plant CME mechanism during the autonomous rise of multicellularity in eukaryotes.
acknowledged_ssus:
- _id: LifeSc
- _id: Bio
- _id: EM-Fac
article_number: e52067
article_processing_charge: No
article_type: original
author:
- first_name: Madhumitha
full_name: Narasimhan, Madhumitha
id: 44BF24D0-F248-11E8-B48F-1D18A9856A87
last_name: Narasimhan
orcid: 0000-0002-8600-0671
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Roshan
full_name: Prizak, Roshan
id: 4456104E-F248-11E8-B48F-1D18A9856A87
last_name: Prizak
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Barbara E
full_name: Casillas Perez, Barbara E
id: 351ED2AA-F248-11E8-B48F-1D18A9856A87
last_name: Casillas Perez
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Narasimhan M, Johnson AJ, Prizak R, et al. Evolutionarily unique mechanistic
framework of clathrin-mediated endocytosis in plants. eLife. 2020;9. doi:10.7554/eLife.52067
apa: Narasimhan, M., Johnson, A. J., Prizak, R., Kaufmann, W., Tan, S., Casillas
Perez, B. E., & Friml, J. (2020). Evolutionarily unique mechanistic framework
of clathrin-mediated endocytosis in plants. ELife. eLife Sciences Publications.
https://doi.org/10.7554/eLife.52067
chicago: Narasimhan, Madhumitha, Alexander J Johnson, Roshan Prizak, Walter Kaufmann,
Shutang Tan, Barbara E Casillas Perez, and Jiří Friml. “Evolutionarily Unique
Mechanistic Framework of Clathrin-Mediated Endocytosis in Plants.” ELife.
eLife Sciences Publications, 2020. https://doi.org/10.7554/eLife.52067.
ieee: M. Narasimhan et al., “Evolutionarily unique mechanistic framework
of clathrin-mediated endocytosis in plants,” eLife, vol. 9. eLife Sciences
Publications, 2020.
ista: Narasimhan M, Johnson AJ, Prizak R, Kaufmann W, Tan S, Casillas Perez BE,
Friml J. 2020. Evolutionarily unique mechanistic framework of clathrin-mediated
endocytosis in plants. eLife. 9, e52067.
mla: Narasimhan, Madhumitha, et al. “Evolutionarily Unique Mechanistic Framework
of Clathrin-Mediated Endocytosis in Plants.” ELife, vol. 9, e52067, eLife
Sciences Publications, 2020, doi:10.7554/eLife.52067.
short: M. Narasimhan, A.J. Johnson, R. Prizak, W. Kaufmann, S. Tan, B.E. Casillas
Perez, J. Friml, ELife 9 (2020).
date_created: 2020-02-16T23:00:50Z
date_published: 2020-01-23T00:00:00Z
date_updated: 2023-08-18T06:33:07Z
day: '23'
ddc:
- '570'
- '580'
department:
- _id: JiFr
- _id: GaTk
- _id: EM-Fac
- _id: SyCr
doi: 10.7554/eLife.52067
ec_funded: 1
external_id:
isi:
- '000514104100001'
pmid:
- '31971511'
file:
- access_level: open_access
checksum: 2052daa4be5019534f3a42f200a09f32
content_type: application/pdf
creator: dernst
date_created: 2020-02-18T07:21:16Z
date_updated: 2020-07-14T12:47:59Z
file_id: '7494'
file_name: 2020_eLife_Narasimhan.pdf
file_size: 7247468
relation: main_file
file_date_updated: 2020-07-14T12:47:59Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
publication: eLife
publication_identifier:
eissn:
- 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: Evolutionarily unique mechanistic framework of clathrin-mediated endocytosis
in plants
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: 9
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. bioRxiv. 2020. doi:10.1101/2020.11.20.391284
apa: Slovakova, J., Sikora, M. K., Caballero Mancebo, S., Krens, G., Kaufmann, W.,
Huljev, K., & Heisenberg, C.-P. J. (2020). Tension-dependent stabilization
of E-cadherin limits cell-cell contact expansion. bioRxiv. Cold Spring
Harbor Laboratory. https://doi.org/10.1101/2020.11.20.391284
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.” BioRxiv.
Cold Spring Harbor Laboratory, 2020. https://doi.org/10.1101/2020.11.20.391284.
ieee: J. Slovakova et al., “Tension-dependent stabilization of E-cadherin
limits cell-cell contact expansion,” bioRxiv. 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, 10.1101/2020.11.20.391284.
mla: Slovakova, Jana, et al. “Tension-Dependent Stabilization of E-Cadherin Limits
Cell-Cell Contact Expansion.” BioRxiv, Cold Spring Harbor Laboratory, 2020,
doi:10.1101/2020.11.20.391284.
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: '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. Developmental Cell.
2018;45(3):331-346. doi:10.1016/j.devcel.2018.04.002
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. Developmental Cell. Elsevier.
https://doi.org/10.1016/j.devcel.2018.04.002
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.” Developmental Cell. Elsevier,
2018. https://doi.org/10.1016/j.devcel.2018.04.002.
ieee: A. Ratheesh et al., “Drosophila TNF modulates tissue tension in the
embryo to facilitate macrophage invasive migration,” Developmental Cell,
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.” Developmental Cell, vol.
45, no. 3, Elsevier, 2018, pp. 331–46, doi:10.1016/j.devcel.2018.04.002.
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: '163'
abstract:
- lang: eng
text: For ultrafast fixation of biological samples to avoid artifacts, high-pressure
freezing (HPF) followed by freeze substitution (FS) is preferred over chemical
fixation at room temperature. After HPF, samples are maintained at low temperature
during dehydration and fixation, while avoiding damaging recrystallization. This
is a notoriously slow process. McDonald and Webb demonstrated, in 2011, that sample
agitation during FS dramatically reduces the necessary time. Then, in 2015, we
(H.G. and S.R.) introduced an agitation module into the cryochamber of an automated
FS unit and demonstrated that the preparation of algae could be shortened from
days to a couple of hours. We argued that variability in the processing, reproducibility,
and safety issues are better addressed using automated FS units. For dissemination,
we started low-cost manufacturing of agitation modules for two of the most widely
used FS units, the Automatic Freeze Substitution Systems, AFS(1) and AFS2, from
Leica Microsystems, using three dimensional (3D)-printing of the major components.
To test them, several labs independently used the modules on a wide variety of
specimens that had previously been processed by manual agitation, or without agitation.
We demonstrate that automated processing with sample agitation saves time, increases
flexibility with respect to sample requirements and protocols, and produces data
of at least as good quality as other approaches.
article_processing_charge: No
article_type: original
author:
- first_name: Siegfried
full_name: Reipert, Siegfried
last_name: Reipert
- first_name: Helmuth
full_name: Goldammer, Helmuth
last_name: Goldammer
- first_name: Christine
full_name: Richardson, Christine
last_name: Richardson
- first_name: Martin
full_name: Goldberg, Martin
last_name: Goldberg
- first_name: Timothy
full_name: Hawkins, Timothy
last_name: Hawkins
- first_name: Elena
full_name: Hollergschwandtner, Elena
id: 3C054040-F248-11E8-B48F-1D18A9856A87
last_name: Hollergschwandtner
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Sebastian
full_name: Antreich, Sebastian
last_name: Antreich
- first_name: York
full_name: Stierhof, York
last_name: Stierhof
citation:
ama: 'Reipert S, Goldammer H, Richardson C, et al. Agitation modules: Flexible means
to accelerate automated freeze substitution. Journal of Histochemistry and
Cytochemistry. 2018;66(12):903-921. doi:10.1369/0022155418786698'
apa: 'Reipert, S., Goldammer, H., Richardson, C., Goldberg, M., Hawkins, T., Saeckl,
E., … Stierhof, Y. (2018). Agitation modules: Flexible means to accelerate automated
freeze substitution. Journal of Histochemistry and Cytochemistry. SAGE
Publications. https://doi.org/10.1369/0022155418786698'
chicago: 'Reipert, Siegfried, Helmuth Goldammer, Christine Richardson, Martin Goldberg,
Timothy Hawkins, Elena Saeckl, Walter Kaufmann, Sebastian Antreich, and York Stierhof.
“Agitation Modules: Flexible Means to Accelerate Automated Freeze Substitution.”
Journal of Histochemistry and Cytochemistry. SAGE Publications, 2018. https://doi.org/10.1369/0022155418786698.'
ieee: 'S. Reipert et al., “Agitation modules: Flexible means to accelerate
automated freeze substitution,” Journal of Histochemistry and Cytochemistry,
vol. 66, no. 12. SAGE Publications, pp. 903–921, 2018.'
ista: 'Reipert S, Goldammer H, Richardson C, Goldberg M, Hawkins T, Saeckl E, Kaufmann
W, Antreich S, Stierhof Y. 2018. Agitation modules: Flexible means to accelerate
automated freeze substitution. Journal of Histochemistry and Cytochemistry. 66(12),
903–921.'
mla: 'Reipert, Siegfried, et al. “Agitation Modules: Flexible Means to Accelerate
Automated Freeze Substitution.” Journal of Histochemistry and Cytochemistry,
vol. 66, no. 12, SAGE Publications, 2018, pp. 903–21, doi:10.1369/0022155418786698.'
short: S. Reipert, H. Goldammer, C. Richardson, M. Goldberg, T. Hawkins, E. Saeckl,
W. Kaufmann, S. Antreich, Y. Stierhof, Journal of Histochemistry and Cytochemistry
66 (2018) 903–921.
date_created: 2018-12-11T11:44:57Z
date_published: 2018-12-01T00:00:00Z
date_updated: 2023-10-17T08:42:24Z
day: '01'
department:
- _id: RySh
- _id: EM-Fac
doi: 10.1369/0022155418786698
external_id:
isi:
- '000452277700005'
pmid:
- '29969056'
intvolume: ' 66'
isi: 1
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1369/0022155418786698
month: '12'
oa: 1
oa_version: Published Version
page: 903-921
pmid: 1
publication: Journal of Histochemistry and Cytochemistry
publication_identifier:
issn:
- 0022-1554
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Agitation modules: Flexible means to accelerate automated freeze substitution'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 66
year: '2018'
...
---
_id: '672'
abstract:
- lang: eng
text: Trafficking cells frequently transmigrate through epithelial and endothelial
monolayers. How monolayers cooperate with the penetrating cells to support their
transit is poorly understood. We studied dendritic cell (DC) entry into lymphatic
capillaries as a model system for transendothelial migration. We find that the
chemokine CCL21, which is the decisive guidance cue for intravasation, mainly
localizes in the trans-Golgi network and intracellular vesicles of lymphatic endothelial
cells. Upon DC transmigration, these Golgi deposits disperse and CCL21 becomes
extracellularly enriched at the sites of endothelial cell-cell junctions. When
we reconstitute the transmigration process in vitro, we find that secretion of
CCL21-positive vesicles is triggered by a DC contact-induced calcium signal, and
selective calcium chelation in lymphatic endothelium attenuates transmigration.
Altogether, our data demonstrate a chemokine-mediated feedback between DCs and
lymphatic endothelium, which facilitates transendothelial migration.
article_processing_charge: Yes
author:
- first_name: Kari
full_name: Vaahtomeri, Kari
id: 368EE576-F248-11E8-B48F-1D18A9856A87
last_name: Vaahtomeri
orcid: 0000-0001-7829-3518
- first_name: Markus
full_name: Brown, Markus
id: 3DAB9AFC-F248-11E8-B48F-1D18A9856A87
last_name: Brown
- first_name: Robert
full_name: Hauschild, Robert
id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87
last_name: Hauschild
orcid: 0000-0001-9843-3522
- first_name: Ingrid
full_name: De Vries, Ingrid
id: 4C7D837E-F248-11E8-B48F-1D18A9856A87
last_name: De Vries
- first_name: Alexander F
full_name: Leithner, Alexander F
id: 3B1B77E4-F248-11E8-B48F-1D18A9856A87
last_name: Leithner
- first_name: Matthias
full_name: Mehling, Matthias
id: 3C23B994-F248-11E8-B48F-1D18A9856A87
last_name: Mehling
orcid: 0000-0001-8599-1226
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- 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: Vaahtomeri K, Brown M, Hauschild R, et al. Locally triggered release of the
chemokine CCL21 promotes dendritic cell transmigration across lymphatic endothelia.
Cell Reports. 2017;19(5):902-909. doi:10.1016/j.celrep.2017.04.027
apa: Vaahtomeri, K., Brown, M., Hauschild, R., de Vries, I., Leithner, A. F., Mehling,
M., … Sixt, M. K. (2017). Locally triggered release of the chemokine CCL21 promotes
dendritic cell transmigration across lymphatic endothelia. Cell Reports.
Cell Press. https://doi.org/10.1016/j.celrep.2017.04.027
chicago: Vaahtomeri, Kari, Markus Brown, Robert Hauschild, Ingrid de Vries, Alexander
F Leithner, Matthias Mehling, Walter Kaufmann, and Michael K Sixt. “Locally Triggered
Release of the Chemokine CCL21 Promotes Dendritic Cell Transmigration across Lymphatic
Endothelia.” Cell Reports. Cell Press, 2017. https://doi.org/10.1016/j.celrep.2017.04.027.
ieee: K. Vaahtomeri et al., “Locally triggered release of the chemokine CCL21
promotes dendritic cell transmigration across lymphatic endothelia,” Cell Reports,
vol. 19, no. 5. Cell Press, pp. 902–909, 2017.
ista: Vaahtomeri K, Brown M, Hauschild R, de Vries I, Leithner AF, Mehling M, Kaufmann
W, Sixt MK. 2017. Locally triggered release of the chemokine CCL21 promotes dendritic
cell transmigration across lymphatic endothelia. Cell Reports. 19(5), 902–909.
mla: Vaahtomeri, Kari, et al. “Locally Triggered Release of the Chemokine CCL21
Promotes Dendritic Cell Transmigration across Lymphatic Endothelia.” Cell Reports,
vol. 19, no. 5, Cell Press, 2017, pp. 902–09, doi:10.1016/j.celrep.2017.04.027.
short: K. Vaahtomeri, M. Brown, R. Hauschild, I. de Vries, A.F. Leithner, M. Mehling,
W. Kaufmann, M.K. Sixt, Cell Reports 19 (2017) 902–909.
date_created: 2018-12-11T11:47:50Z
date_published: 2017-05-02T00:00:00Z
date_updated: 2023-02-23T12:50:09Z
day: '02'
ddc:
- '570'
department:
- _id: MiSi
- _id: Bio
- _id: EM-Fac
doi: 10.1016/j.celrep.2017.04.027
ec_funded: 1
file:
- access_level: open_access
checksum: 8fdddaab1f1d76a6ec9ca94dcb6b07a2
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:14:54Z
date_updated: 2020-07-14T12:47:38Z
file_id: '5109'
file_name: IST-2017-900-v1+1_1-s2.0-S2211124717305211-main.pdf
file_size: 2248814
relation: main_file
file_date_updated: 2020-07-14T12:47:38Z
has_accepted_license: '1'
intvolume: ' 19'
issue: '5'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 902 - 909
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: 25A8E5EA-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Y 564-B12
name: Cytoskeletal force generation and transduction of leukocytes (FWF)
publication: Cell Reports
publication_identifier:
issn:
- '22111247'
publication_status: published
publisher: Cell Press
publist_id: '7052'
pubrep_id: '900'
quality_controlled: '1'
scopus_import: 1
status: public
title: Locally triggered release of the chemokine CCL21 promotes dendritic cell transmigration
across lymphatic endothelia
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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2017'
...
---
_id: '693'
abstract:
- lang: eng
text: 'Many central synapses contain a single presynaptic active zone and a single
postsynaptic density. Vesicular release statistics at such “simple synapses” indicate
that they contain a small complement of docking sites where vesicles repetitively
dock and fuse. In this work, we investigate functional and morphological aspects
of docking sites at simple synapses made between cerebellar parallel fibers and
molecular layer interneurons. Using immunogold labeling of SDS-treated freeze-fracture
replicas, we find that Cav2.1 channels form several clusters per active zone with
about nine channels per cluster. The mean value and range of intersynaptic variation
are similar for Cav2.1 cluster numbers and for functional estimates of docking-site
numbers obtained from the maximum numbers of released vesicles per action potential.
Both numbers grow in relation with synaptic size and decrease by a similar extent
with age between 2 wk and 4 wk postnatal. Thus, the mean docking-site numbers
were 3.15 at 2 wk (range: 1–10) and 2.03 at 4 wk (range: 1–4), whereas the mean
numbers of Cav2.1 clusters were 2.84 at 2 wk (range: 1–8) and 2.37 at 4 wk (range:
1–5). These changes were accompanied by decreases of miniature current amplitude
(from 93 pA to 56 pA), active-zone surface area (from 0.0427 μm2 to 0.0234 μm2),
and initial success rate (from 0.609 to 0.353), indicating a tightening of synaptic
transmission with development. Altogether, these results suggest a close correspondence
between the number of functionally defined vesicular docking sites and that of
clusters of voltage-gated calcium channels. '
article_processing_charge: Yes (in subscription journal)
author:
- first_name: Takafumi
full_name: Miki, Takafumi
last_name: Miki
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Gerardo
full_name: Malagon, Gerardo
last_name: Malagon
- first_name: Laura
full_name: Gomez, Laura
last_name: Gomez
- first_name: Katsuhiko
full_name: Tabuchi, Katsuhiko
last_name: Tabuchi
- first_name: Masahiko
full_name: Watanabe, Masahiko
last_name: Watanabe
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
- first_name: Alain
full_name: Marty, Alain
last_name: Marty
citation:
ama: Miki T, Kaufmann W, Malagon G, et al. Numbers of presynaptic Ca2+ channel clusters
match those of functionally defined vesicular docking sites in single central
synapses. PNAS. 2017;114(26):E5246-E5255. doi:10.1073/pnas.1704470114
apa: Miki, T., Kaufmann, W., Malagon, G., Gomez, L., Tabuchi, K., Watanabe, M.,
… Marty, A. (2017). Numbers of presynaptic Ca2+ channel clusters match those of
functionally defined vesicular docking sites in single central synapses. PNAS.
National Academy of Sciences. https://doi.org/10.1073/pnas.1704470114
chicago: Miki, Takafumi, Walter Kaufmann, Gerardo Malagon, Laura Gomez, Katsuhiko
Tabuchi, Masahiko Watanabe, Ryuichi Shigemoto, and Alain Marty. “Numbers of Presynaptic
Ca2+ Channel Clusters Match Those of Functionally Defined Vesicular Docking Sites
in Single Central Synapses.” PNAS. National Academy of Sciences, 2017.
https://doi.org/10.1073/pnas.1704470114.
ieee: T. Miki et al., “Numbers of presynaptic Ca2+ channel clusters match
those of functionally defined vesicular docking sites in single central synapses,”
PNAS, vol. 114, no. 26. National Academy of Sciences, pp. E5246–E5255,
2017.
ista: Miki T, Kaufmann W, Malagon G, Gomez L, Tabuchi K, Watanabe M, Shigemoto R,
Marty A. 2017. Numbers of presynaptic Ca2+ channel clusters match those of functionally
defined vesicular docking sites in single central synapses. PNAS. 114(26), E5246–E5255.
mla: Miki, Takafumi, et al. “Numbers of Presynaptic Ca2+ Channel Clusters Match
Those of Functionally Defined Vesicular Docking Sites in Single Central Synapses.”
PNAS, vol. 114, no. 26, National Academy of Sciences, 2017, pp. E5246–55,
doi:10.1073/pnas.1704470114.
short: T. Miki, W. Kaufmann, G. Malagon, L. Gomez, K. Tabuchi, M. Watanabe, R. Shigemoto,
A. Marty, PNAS 114 (2017) E5246–E5255.
date_created: 2018-12-11T11:47:57Z
date_published: 2017-06-27T00:00:00Z
date_updated: 2023-02-23T12:54:57Z
day: '27'
ddc:
- '570'
department:
- _id: EM-Fac
- _id: RySh
doi: 10.1073/pnas.1704470114
external_id:
pmid:
- '28607047'
file:
- access_level: open_access
checksum: 2ab75d554f3df4a34d20fa8040589b7e
content_type: application/pdf
creator: kschuh
date_created: 2020-01-03T13:27:29Z
date_updated: 2020-07-14T12:47:44Z
file_id: '7223'
file_name: 2017_PNAS_Miki.pdf
file_size: 2721544
relation: main_file
file_date_updated: 2020-07-14T12:47:44Z
has_accepted_license: '1'
intvolume: ' 114'
issue: '26'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: E5246 - E5255
pmid: 1
publication: PNAS
publication_identifier:
issn:
- '00278424'
publication_status: published
publisher: National Academy of Sciences
publist_id: '7013'
quality_controlled: '1'
scopus_import: 1
status: public
title: Numbers of presynaptic Ca2+ channel clusters match those of functionally defined
vesicular docking sites in single central synapses
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 114
year: '2017'
...
---
_id: '1515'
abstract:
- lang: eng
text: Type 1 metabotropic glutamate (mGlu1) receptors play a pivotal role in different
forms of synaptic plasticity in the cerebellar cortex, e.g. long-term depression
at glutamatergic synapses and rebound potentiation at GABAergic synapses. These
various forms of plasticity might depend on the subsynaptic arrangement of the
receptor in Purkinje cells that can be regulated by protein-protein interactions.
This study investigated, by means of the freeze-fracture replica immunogold labelling
method, the subcellular localization of mGlu1 receptors in the rodent cerebellum
and whether Homer proteins regulate their subsynaptic distribution. We observed
a widespread extrasynaptic localization of mGlu1 receptors and confirmed their
peri-synaptic enrichment at glutamatergic synapses. Conversely, we detected mGlu1
receptors within the main body of GABAergic synapses onto Purkinje cell dendrites.
Although Homer proteins are known to interact with the mGlu1 receptor C-terminus,
we could not detect Homer3, the most abundant Homer protein in the cerebellar
cortex, at GABAergic synapses by pre-embedding and post-embedding immunoelectron
microscopy. We then hypothesized a critical role for Homer proteins in the peri-junctional
localization of mGlu1 receptors at glutamatergic synapses. To disrupt Homer-associated
protein complexes, mice were tail-vein injected with the membrane-permeable dominant-negative
TAT-Homer1a. Freeze-fracture replica immunogold labelling analysis showed no significant
alteration in the mGlu1 receptor distribution pattern at parallel fibre-Purkinje
cell synapses, suggesting that other scaffolding proteins are involved in the
peri-synaptic confinement. The identification of interactors that regulate the
subsynaptic localization of the mGlu1 receptor at neurochemically distinct synapses
may offer new insight into its trafficking and intracellular signalling.
acknowledgement: This work was supported by the Austrian Science Fund (FWF) (project
W012060-10 to F.F.), The Japan Society for the Promotion of Science (JSPS) (to R.S.)
and Agence Nationale de la Recherche (ANR-11-BSV4-018-03, DELTAPLAN), Région Languedoc-Roussillon
(Chercheur d’Avenir) (to J.P.). The authors thank S. Schönherr for excellent technical
support and Dr Furuichi for kindly providing anti-Homer3 antibodies.
author:
- first_name: Mahnaz
full_name: Mansouri, Mahnaz
last_name: Mansouri
- first_name: Yu
full_name: Kasugai, Yu
last_name: Kasugai
- first_name: Yugo
full_name: Fukazawa, Yugo
last_name: Fukazawa
- first_name: Federica
full_name: Bertaso, Federica
last_name: Bertaso
- first_name: Fabrice
full_name: Raynaud, Fabrice
last_name: Raynaud
- first_name: Julie
full_name: Perroy, Julie
last_name: Perroy
- first_name: Laurent
full_name: Fagni, Laurent
last_name: Fagni
- first_name: Walter
full_name: Walter Kaufmann
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Masahiko
full_name: Watanabe, Masahiko
last_name: Watanabe
- first_name: Ryuichi
full_name: Ryuichi Shigemoto
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
- first_name: Francesco
full_name: Ferraguti, Francesco
last_name: Ferraguti
citation:
ama: Mansouri M, Kasugai Y, Fukazawa Y, et al. Distinct subsynaptic localization
of type 1 metabotropic glutamate receptors at glutamatergic and GABAergic synapses
in the rodent cerebellar cortex. European Journal of Neuroscience. 2015;41(2):157-167.
doi:10.1111/ejn.12779
apa: Mansouri, M., Kasugai, Y., Fukazawa, Y., Bertaso, F., Raynaud, F., Perroy,
J., … Ferraguti, F. (2015). Distinct subsynaptic localization of type 1 metabotropic
glutamate receptors at glutamatergic and GABAergic synapses in the rodent cerebellar
cortex. European Journal of Neuroscience. Wiley-Blackwell. https://doi.org/10.1111/ejn.12779
chicago: Mansouri, Mahnaz, Yu Kasugai, Yugo Fukazawa, Federica Bertaso, Fabrice
Raynaud, Julie Perroy, Laurent Fagni, et al. “Distinct Subsynaptic Localization
of Type 1 Metabotropic Glutamate Receptors at Glutamatergic and GABAergic Synapses
in the Rodent Cerebellar Cortex.” European Journal of Neuroscience. Wiley-Blackwell,
2015. https://doi.org/10.1111/ejn.12779.
ieee: M. Mansouri et al., “Distinct subsynaptic localization of type 1 metabotropic
glutamate receptors at glutamatergic and GABAergic synapses in the rodent cerebellar
cortex,” European Journal of Neuroscience, vol. 41, no. 2. Wiley-Blackwell,
pp. 157–167, 2015.
ista: Mansouri M, Kasugai Y, Fukazawa Y, Bertaso F, Raynaud F, Perroy J, Fagni L,
Kaufmann W, Watanabe M, Shigemoto R, Ferraguti F. 2015. Distinct subsynaptic localization
of type 1 metabotropic glutamate receptors at glutamatergic and GABAergic synapses
in the rodent cerebellar cortex. European Journal of Neuroscience. 41(2), 157–167.
mla: Mansouri, Mahnaz, et al. “Distinct Subsynaptic Localization of Type 1 Metabotropic
Glutamate Receptors at Glutamatergic and GABAergic Synapses in the Rodent Cerebellar
Cortex.” European Journal of Neuroscience, vol. 41, no. 2, Wiley-Blackwell,
2015, pp. 157–67, doi:10.1111/ejn.12779.
short: M. Mansouri, Y. Kasugai, Y. Fukazawa, F. Bertaso, F. Raynaud, J. Perroy,
L. Fagni, W. Kaufmann, M. Watanabe, R. Shigemoto, F. Ferraguti, European Journal
of Neuroscience 41 (2015) 157–167.
date_created: 2018-12-11T11:52:28Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2023-02-23T10:02:24Z
day: '01'
doi: 10.1111/ejn.12779
extern: 1
intvolume: ' 41'
issue: '2'
month: '01'
page: 157 - 167
publication: European Journal of Neuroscience
publication_status: published
publisher: Wiley-Blackwell
publist_id: '5662'
quality_controlled: 0
status: public
title: Distinct subsynaptic localization of type 1 metabotropic glutamate receptors
at glutamatergic and GABAergic synapses in the rodent cerebellar cortex
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
volume: 41
year: '2015'
...