---
_id: '13202'
abstract:
- lang: eng
text: Phosphatidylinositol-4,5-bisphosphate (PI(4,5)P2) plays an essential role
in neuronal activities through interaction with various proteins involved in signaling
at membranes. However, the distribution pattern of PI(4,5)P2 and the association
with these proteins on the neuronal cell membranes remain elusive. In this study,
we established a method for visualizing PI(4,5)P2 by SDS-digested freeze-fracture
replica labeling (SDS-FRL) to investigate the quantitative nanoscale distribution
of PI(4,5)P2 in cryo-fixed brain. We demonstrate that PI(4,5)P2 forms tiny clusters
with a mean size of ∼1000 nm2 rather than randomly distributed in cerebellar neuronal
membranes in male C57BL/6J mice. These clusters show preferential accumulation
in specific membrane compartments of different cell types, in particular, in Purkinje
cell (PC) spines and granule cell (GC) presynaptic active zones. Furthermore,
we revealed extensive association of PI(4,5)P2 with CaV2.1 and GIRK3 across different
membrane compartments, whereas its association with mGluR1α was compartment specific.
These results suggest that our SDS-FRL method provides valuable insights into
the physiological functions of PI(4,5)P2 in neurons.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: This work was supported by The Institute of Science and Technology
(IST) Austria, the European Union's Horizon 2020 Research and Innovation Program
under the Marie Skłodowska-Curie Grant Agreement No. 793482 (to K.E.) and by the
European Research Council (ERC) Grant Agreement No. 694539 (to R.S.). We thank Nicoleta
Condruz (IST Austria, Klosterneuburg, Austria) for technical assistance with sample
preparation, the Electron Microscopy Facility of IST Austria (Klosterneuburg, Austria)
for technical support with EM works, Natalia Baranova (University of Vienna, Vienna,
Austria) and Martin Loose (IST Austria, Klosterneuburg, Austria) for advice on liposome
preparation, and Yugo Fukazawa (University of Fukui, Fukui, Japan) for comments.
article_processing_charge: No
article_type: original
author:
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Elodie
full_name: Le Monnier, Elodie
id: 3B59276A-F248-11E8-B48F-1D18A9856A87
last_name: Le Monnier
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
citation:
ama: Eguchi K, Le Monnier E, Shigemoto R. Nanoscale phosphoinositide distribution
on cell membranes of mouse cerebellar neurons. The Journal of Neuroscience.
2023;43(23):4197-4216. doi:10.1523/JNEUROSCI.1514-22.2023
apa: Eguchi, K., Le Monnier, E., & Shigemoto, R. (2023). Nanoscale phosphoinositide
distribution on cell membranes of mouse cerebellar neurons. The Journal of
Neuroscience. Society for Neuroscience. https://doi.org/10.1523/JNEUROSCI.1514-22.2023
chicago: Eguchi, Kohgaku, Elodie Le Monnier, and Ryuichi Shigemoto. “Nanoscale Phosphoinositide
Distribution on Cell Membranes of Mouse Cerebellar Neurons.” The Journal of
Neuroscience. Society for Neuroscience, 2023. https://doi.org/10.1523/JNEUROSCI.1514-22.2023.
ieee: K. Eguchi, E. Le Monnier, and R. Shigemoto, “Nanoscale phosphoinositide distribution
on cell membranes of mouse cerebellar neurons,” The Journal of Neuroscience,
vol. 43, no. 23. Society for Neuroscience, pp. 4197–4216, 2023.
ista: Eguchi K, Le Monnier E, Shigemoto R. 2023. Nanoscale phosphoinositide distribution
on cell membranes of mouse cerebellar neurons. The Journal of Neuroscience. 43(23),
4197–4216.
mla: Eguchi, Kohgaku, et al. “Nanoscale Phosphoinositide Distribution on Cell Membranes
of Mouse Cerebellar Neurons.” The Journal of Neuroscience, vol. 43, no.
23, Society for Neuroscience, 2023, pp. 4197–216, doi:10.1523/JNEUROSCI.1514-22.2023.
short: K. Eguchi, E. Le Monnier, R. Shigemoto, The Journal of Neuroscience 43 (2023)
4197–4216.
date_created: 2023-07-09T22:01:12Z
date_published: 2023-06-07T00:00:00Z
date_updated: 2023-10-18T07:12:47Z
day: '07'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1523/JNEUROSCI.1514-22.2023
ec_funded: 1
external_id:
isi:
- '001020132100005'
pmid:
- '37160366'
file:
- access_level: open_access
checksum: 70b2141870e0bf1c94fd343e18fdbc32
content_type: application/pdf
creator: alisjak
date_created: 2023-07-10T09:04:58Z
date_updated: 2023-07-10T09:04:58Z
file_id: '13205'
file_name: 2023_JN_Eguchi.pdf
file_size: 7794425
relation: main_file
success: 1
file_date_updated: 2023-07-10T09:04:58Z
has_accepted_license: '1'
intvolume: ' 43'
isi: 1
issue: '23'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 4197-4216
pmid: 1
project:
- _id: 2659CC84-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '793482'
name: 'Ultrastructural analysis of phosphoinositides in nerve terminals: distribution,
dynamics and physiological roles in synaptic transmission'
- _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: The Journal of Neuroscience
publication_identifier:
eissn:
- 1529-2401
issn:
- 0270-6474
publication_status: published
publisher: Society for Neuroscience
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nanoscale phosphoinositide distribution on cell membranes of mouse cerebellar
neurons
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 43
year: '2023'
...
---
_id: '10890'
abstract:
- lang: eng
text: Upon the arrival of action potentials at nerve terminals, neurotransmitters
are released from synaptic vesicles (SVs) by exocytosis. CaV2.1, 2.2, and 2.3
are the major subunits of the voltage-gated calcium channel (VGCC) responsible
for increasing intraterminal calcium levels and triggering SV exocytosis in the
central nervous system (CNS) synapses. The two-dimensional analysis of CaV2 distributions
using sodium dodecyl sulfate (SDS)-digested freeze-fracture replica labeling (SDS-FRL)
has revealed their numbers, densities, and nanoscale clustering patterns in individual
presynaptic active zones. The variation in these properties affects the coupling
of VGCCs with calcium sensors on SVs, synaptic efficacy, and temporal precision
of transmission. In this study, we summarize how the morphological parameters
of CaV2 distribution obtained using SDS-FRL differ depending on the different
types of synapses and could correspond to functional properties in synaptic transmission.
acknowledgement: "This work was supported by the European Research Council advanced
grant No. 694539 and the joint German-Austrian DFG and FWF project SYNABS (FWF:
I-4638-B) to RS.\r\nThe authors thank Walter Kaufmann for his critical comments
on the manuscript."
article_number: '846615'
article_processing_charge: No
article_type: original
author:
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Jacqueline-Claire
full_name: Montanaro-Punzengruber, Jacqueline-Claire
id: 3786AB44-F248-11E8-B48F-1D18A9856A87
last_name: Montanaro-Punzengruber
- first_name: Elodie
full_name: Le Monnier, Elodie
id: 3B59276A-F248-11E8-B48F-1D18A9856A87
last_name: Le Monnier
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
citation:
ama: Eguchi K, Montanaro-Punzengruber J-C, Le Monnier E, Shigemoto R. The number
and distinct clustering patterns of voltage-gated Calcium channels in nerve terminals.
Frontiers in Neuroanatomy. 2022;16. doi:10.3389/fnana.2022.846615
apa: Eguchi, K., Montanaro-Punzengruber, J.-C., Le Monnier, E., & Shigemoto,
R. (2022). The number and distinct clustering patterns of voltage-gated Calcium
channels in nerve terminals. Frontiers in Neuroanatomy. Frontiers. https://doi.org/10.3389/fnana.2022.846615
chicago: Eguchi, Kohgaku, Jacqueline-Claire Montanaro-Punzengruber, Elodie Le Monnier,
and Ryuichi Shigemoto. “The Number and Distinct Clustering Patterns of Voltage-Gated
Calcium Channels in Nerve Terminals.” Frontiers in Neuroanatomy. Frontiers,
2022. https://doi.org/10.3389/fnana.2022.846615.
ieee: K. Eguchi, J.-C. Montanaro-Punzengruber, E. Le Monnier, and R. Shigemoto,
“The number and distinct clustering patterns of voltage-gated Calcium channels
in nerve terminals,” Frontiers in Neuroanatomy, vol. 16. Frontiers, 2022.
ista: Eguchi K, Montanaro-Punzengruber J-C, Le Monnier E, Shigemoto R. 2022. The
number and distinct clustering patterns of voltage-gated Calcium channels in nerve
terminals. Frontiers in Neuroanatomy. 16, 846615.
mla: Eguchi, Kohgaku, et al. “The Number and Distinct Clustering Patterns of Voltage-Gated
Calcium Channels in Nerve Terminals.” Frontiers in Neuroanatomy, vol. 16,
846615, Frontiers, 2022, doi:10.3389/fnana.2022.846615.
short: K. Eguchi, J.-C. Montanaro-Punzengruber, E. Le Monnier, R. Shigemoto, Frontiers
in Neuroanatomy 16 (2022).
date_created: 2022-03-20T23:01:39Z
date_published: 2022-02-24T00:00:00Z
date_updated: 2024-10-29T07:57:26Z
day: '24'
ddc:
- '570'
department:
- _id: RySh
doi: 10.3389/fnana.2022.846615
ec_funded: 1
external_id:
isi:
- '000766662700001'
pmid:
- '35280978'
file:
- access_level: open_access
checksum: 51ec9b90e7da919e22c01a15489eaacd
content_type: application/pdf
creator: dernst
date_created: 2022-03-21T09:41:19Z
date_updated: 2022-03-21T09:41:19Z
file_id: '10911'
file_name: 2022_FrontiersNeuroanatomy_Eguchi.pdf
file_size: 2416395
relation: main_file
success: 1
file_date_updated: 2022-03-21T09:41:19Z
has_accepted_license: '1'
intvolume: ' 16'
isi: 1
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
pmid: 1
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: 05970B30-7A3F-11EA-A408-12923DDC885E
grant_number: I04638
name: LGI1 antibody-induced pathophysiology in synapses
publication: Frontiers in Neuroanatomy
publication_identifier:
eissn:
- '16625129'
publication_status: published
publisher: Frontiers
quality_controlled: '1'
scopus_import: '1'
status: public
title: The number and distinct clustering patterns of voltage-gated Calcium channels
in nerve terminals
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: 16
year: '2022'
...
---
_id: '11419'
abstract:
- lang: eng
text: Elevation of soluble wild-type (WT) tau occurs in synaptic compartments in
Alzheimer’s disease. We addressed whether tau elevation affects synaptic transmission
at the calyx of Held in slices from mice brainstem. Whole-cell loading of WT human
tau (h-tau) in presynaptic terminals at 10–20 µM caused microtubule (MT) assembly
and activity-dependent rundown of excitatory neurotransmission. Capacitance measurements
revealed that the primary target of WT h-tau is vesicle endocytosis. Blocking
MT assembly using nocodazole prevented tau-induced impairments of endocytosis
and neurotransmission. Immunofluorescence imaging analyses revealed that MT assembly
by WT h-tau loading was associated with an increased MT-bound fraction of the
endocytic protein dynamin. A synthetic dodecapeptide corresponding to dynamin
1-pleckstrin-homology domain inhibited MT-dynamin interaction and rescued tau-induced
impairments of endocytosis and neurotransmission. We conclude that elevation of
presynaptic WT tau induces de novo assembly of MTs, thereby sequestering free
dynamins. As a result, endocytosis and subsequent vesicle replenishment are impaired,
causing activity-dependent rundown of neurotransmission.
acknowledgement: We thank Yasuo Ihara, Nobuyuki Nukina, and Takeshi Sakaba for comments
and Patrick Stoney for editing this paper. We also thank Shota Okuda and Mikako
Matsubara for their contributions in the early stage of this study, and Satoko Wada-Kakuda
for technical assistant with in vitro analysis of tau. This research was supported
by funding from Okinawa Institute of Science and Technology and from Technology
(OIST) and Core Research for the Evolutional Science and Technology of Japan Science
and Technology Agency (CREST) to TT, and by Scientific Research on Innovative Areas
to TM (Brain Protein Aging and Dementia Control 26117004).
article_number: e73542
article_processing_charge: No
article_type: original
author:
- first_name: Tetsuya
full_name: Hori, Tetsuya
last_name: Hori
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Han Ying
full_name: Wang, Han Ying
last_name: Wang
- first_name: Tomohiro
full_name: Miyasaka, Tomohiro
last_name: Miyasaka
- first_name: Laurent
full_name: Guillaud, Laurent
last_name: Guillaud
- first_name: Zacharie
full_name: Taoufiq, Zacharie
last_name: Taoufiq
- first_name: Satyajit
full_name: Mahapatra, Satyajit
last_name: Mahapatra
- first_name: Hiroshi
full_name: Yamada, Hiroshi
last_name: Yamada
- first_name: Kohji
full_name: Takei, Kohji
last_name: Takei
- first_name: Tomoyuki
full_name: Takahashi, Tomoyuki
last_name: Takahashi
citation:
ama: Hori T, Eguchi K, Wang HY, et al. Microtubule assembly by tau impairs endocytosis
and neurotransmission via dynamin sequestration in Alzheimer’s disease synapse
model. eLife. 2022;11. doi:10.7554/eLife.73542
apa: Hori, T., Eguchi, K., Wang, H. Y., Miyasaka, T., Guillaud, L., Taoufiq, Z.,
… Takahashi, T. (2022). Microtubule assembly by tau impairs endocytosis and neurotransmission
via dynamin sequestration in Alzheimer’s disease synapse model. ELife.
eLife Sciences Publications. https://doi.org/10.7554/eLife.73542
chicago: Hori, Tetsuya, Kohgaku Eguchi, Han Ying Wang, Tomohiro Miyasaka, Laurent
Guillaud, Zacharie Taoufiq, Satyajit Mahapatra, Hiroshi Yamada, Kohji Takei, and
Tomoyuki Takahashi. “Microtubule Assembly by Tau Impairs Endocytosis and Neurotransmission
via Dynamin Sequestration in Alzheimer’s Disease Synapse Model.” ELife.
eLife Sciences Publications, 2022. https://doi.org/10.7554/eLife.73542.
ieee: T. Hori et al., “Microtubule assembly by tau impairs endocytosis and
neurotransmission via dynamin sequestration in Alzheimer’s disease synapse model,”
eLife, vol. 11. eLife Sciences Publications, 2022.
ista: Hori T, Eguchi K, Wang HY, Miyasaka T, Guillaud L, Taoufiq Z, Mahapatra S,
Yamada H, Takei K, Takahashi T. 2022. Microtubule assembly by tau impairs endocytosis
and neurotransmission via dynamin sequestration in Alzheimer’s disease synapse
model. eLife. 11, e73542.
mla: Hori, Tetsuya, et al. “Microtubule Assembly by Tau Impairs Endocytosis and
Neurotransmission via Dynamin Sequestration in Alzheimer’s Disease Synapse Model.”
ELife, vol. 11, e73542, eLife Sciences Publications, 2022, doi:10.7554/eLife.73542.
short: T. Hori, K. Eguchi, H.Y. Wang, T. Miyasaka, L. Guillaud, Z. Taoufiq, S. Mahapatra,
H. Yamada, K. Takei, T. Takahashi, ELife 11 (2022).
date_created: 2022-05-29T22:01:54Z
date_published: 2022-05-05T00:00:00Z
date_updated: 2023-08-03T07:15:49Z
day: '05'
ddc:
- '616'
department:
- _id: RySh
doi: 10.7554/eLife.73542
external_id:
isi:
- '000876231600001'
pmid:
- '35471147 '
file:
- access_level: open_access
checksum: ccddbd167e00ff8375f12998af497152
content_type: application/pdf
creator: cchlebak
date_created: 2022-05-30T08:09:16Z
date_updated: 2022-05-30T08:09:16Z
file_id: '11421'
file_name: elife-73542-v2.pdf
file_size: 2466296
relation: main_file
success: 1
file_date_updated: 2022-05-30T08:09:16Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
pmid: 1
publication: eLife
publication_identifier:
eissn:
- 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: Microtubule assembly by tau impairs endocytosis and neurotransmission via dynamin
sequestration in Alzheimer's disease synapse model
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: 11
year: '2022'
...
---
_id: '7908'
abstract:
- lang: eng
text: Volatile anesthetics are widely used for surgery, but neuronal mechanisms
of anesthesia remain unidentified. At the calyx of Held in brainstem slices from
rats of either sex, isoflurane at clinical doses attenuated EPSCs by decreasing
the release probability and the number of readily releasable vesicles. In presynaptic
recordings of Ca2+ currents and exocytic capacitance changes, isoflurane attenuated
exocytosis by inhibiting Ca2+ currents evoked by a short presynaptic depolarization,
whereas it inhibited exocytosis evoked by a prolonged depolarization via directly
blocking exocytic machinery downstream of Ca2+ influx. Since the length of presynaptic
depolarization can simulate the frequency of synaptic inputs, isoflurane anesthesia
is likely mediated by distinct dual mechanisms, depending on input frequencies.
In simultaneous presynaptic and postsynaptic action potential recordings, isoflurane
impaired the fidelity of repetitive spike transmission, more strongly at higher
frequencies. Furthermore, in the cerebrum of adult mice, isoflurane inhibited
monosynaptic corticocortical spike transmission, preferentially at a higher frequency.
We conclude that dual presynaptic mechanisms operate for the anesthetic action
of isoflurane, of which direct inhibition of exocytic machinery plays a low-pass
filtering role in spike transmission at central excitatory synapses.
article_processing_charge: No
article_type: original
author:
- first_name: Han Ying
full_name: Wang, Han Ying
last_name: Wang
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Takayuki
full_name: Yamashita, Takayuki
last_name: Yamashita
- first_name: Tomoyuki
full_name: Takahashi, Tomoyuki
last_name: Takahashi
citation:
ama: Wang HY, Eguchi K, Yamashita T, Takahashi T. Frequency-dependent block of excitatory
neurotransmission by isoflurane via dual presynaptic mechanisms. Journal of
Neuroscience. 2020;40(21):4103-4115. doi:10.1523/JNEUROSCI.2946-19.2020
apa: Wang, H. Y., Eguchi, K., Yamashita, T., & Takahashi, T. (2020). Frequency-dependent
block of excitatory neurotransmission by isoflurane via dual presynaptic mechanisms.
Journal of Neuroscience. Society for Neuroscience. https://doi.org/10.1523/JNEUROSCI.2946-19.2020
chicago: Wang, Han Ying, Kohgaku Eguchi, Takayuki Yamashita, and Tomoyuki Takahashi.
“Frequency-Dependent Block of Excitatory Neurotransmission by Isoflurane via Dual
Presynaptic Mechanisms.” Journal of Neuroscience. Society for Neuroscience,
2020. https://doi.org/10.1523/JNEUROSCI.2946-19.2020.
ieee: H. Y. Wang, K. Eguchi, T. Yamashita, and T. Takahashi, “Frequency-dependent
block of excitatory neurotransmission by isoflurane via dual presynaptic mechanisms,”
Journal of Neuroscience, vol. 40, no. 21. Society for Neuroscience, pp.
4103–4115, 2020.
ista: Wang HY, Eguchi K, Yamashita T, Takahashi T. 2020. Frequency-dependent block
of excitatory neurotransmission by isoflurane via dual presynaptic mechanisms.
Journal of Neuroscience. 40(21), 4103–4115.
mla: Wang, Han Ying, et al. “Frequency-Dependent Block of Excitatory Neurotransmission
by Isoflurane via Dual Presynaptic Mechanisms.” Journal of Neuroscience,
vol. 40, no. 21, Society for Neuroscience, 2020, pp. 4103–15, doi:10.1523/JNEUROSCI.2946-19.2020.
short: H.Y. Wang, K. Eguchi, T. Yamashita, T. Takahashi, Journal of Neuroscience
40 (2020) 4103–4115.
date_created: 2020-05-31T22:00:48Z
date_published: 2020-05-20T00:00:00Z
date_updated: 2023-08-21T06:31:25Z
day: '20'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1523/JNEUROSCI.2946-19.2020
external_id:
isi:
- '000535694700004'
file:
- access_level: open_access
checksum: 6571607ea9036154b67cc78e848a7f7d
content_type: application/pdf
creator: dernst
date_created: 2020-06-02T09:12:16Z
date_updated: 2020-07-14T12:48:05Z
file_id: '7912'
file_name: 2020_JourNeuroscience_Wang.pdf
file_size: 3817360
relation: main_file
file_date_updated: 2020-07-14T12:48:05Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '21'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 4103-4115
publication: Journal of Neuroscience
publication_identifier:
eissn:
- '15292401'
publication_status: published
publisher: Society for Neuroscience
quality_controlled: '1'
scopus_import: '1'
status: public
title: Frequency-dependent block of excitatory neurotransmission by isoflurane via
dual presynaptic mechanisms
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: 40
year: '2020'
...
---
_id: '7339'
abstract:
- lang: eng
text: Cytoskeletal filaments such as microtubules (MTs) and filamentous actin (F-actin)
dynamically support cell structure and functions. In central presynaptic terminals,
F-actin is expressed along the release edge and reportedly plays diverse functional
roles, but whether axonal MTs extend deep into terminals and play any physiological
role remains controversial. At the calyx of Held in rats of either sex, confocal
and high-resolution microscopy revealed that MTs enter deep into presynaptic terminal
swellings and partially colocalize with a subset of synaptic vesicles (SVs). Electrophysiological
analysis demonstrated that depolymerization of MTs specifically prolonged the
slow-recovery time component of EPSCs from short-term depression induced by a
train of high-frequency stimulation, whereas depolymerization of F-actin specifically
prolonged the fast-recovery component. In simultaneous presynaptic and postsynaptic
action potential recordings, depolymerization of MTs or F-actin significantly
impaired the fidelity of high-frequency neurotransmission. We conclude that MTs
and F-actin differentially contribute to slow and fast SV replenishment, thereby
maintaining high-frequency neurotransmission.
article_processing_charge: No
article_type: original
author:
- first_name: Lashmi
full_name: Piriya Ananda Babu, Lashmi
last_name: Piriya Ananda Babu
- first_name: Han Ying
full_name: Wang, Han Ying
last_name: Wang
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Laurent
full_name: Guillaud, Laurent
last_name: Guillaud
- first_name: Tomoyuki
full_name: Takahashi, Tomoyuki
last_name: Takahashi
citation:
ama: Piriya Ananda Babu L, Wang HY, Eguchi K, Guillaud L, Takahashi T. Microtubule
and actin differentially regulate synaptic vesicle cycling to maintain high-frequency
neurotransmission. Journal of neuroscience. 2020;40(1):131-142. doi:10.1523/JNEUROSCI.1571-19.2019
apa: Piriya Ananda Babu, L., Wang, H. Y., Eguchi, K., Guillaud, L., & Takahashi,
T. (2020). Microtubule and actin differentially regulate synaptic vesicle cycling
to maintain high-frequency neurotransmission. Journal of Neuroscience.
Society for Neuroscience. https://doi.org/10.1523/JNEUROSCI.1571-19.2019
chicago: Piriya Ananda Babu, Lashmi, Han Ying Wang, Kohgaku Eguchi, Laurent Guillaud,
and Tomoyuki Takahashi. “Microtubule and Actin Differentially Regulate Synaptic
Vesicle Cycling to Maintain High-Frequency Neurotransmission.” Journal of Neuroscience.
Society for Neuroscience, 2020. https://doi.org/10.1523/JNEUROSCI.1571-19.2019.
ieee: L. Piriya Ananda Babu, H. Y. Wang, K. Eguchi, L. Guillaud, and T. Takahashi,
“Microtubule and actin differentially regulate synaptic vesicle cycling to maintain
high-frequency neurotransmission,” Journal of neuroscience, vol. 40, no.
1. Society for Neuroscience, pp. 131–142, 2020.
ista: Piriya Ananda Babu L, Wang HY, Eguchi K, Guillaud L, Takahashi T. 2020. Microtubule
and actin differentially regulate synaptic vesicle cycling to maintain high-frequency
neurotransmission. Journal of neuroscience. 40(1), 131–142.
mla: Piriya Ananda Babu, Lashmi, et al. “Microtubule and Actin Differentially Regulate
Synaptic Vesicle Cycling to Maintain High-Frequency Neurotransmission.” Journal
of Neuroscience, vol. 40, no. 1, Society for Neuroscience, 2020, pp. 131–42,
doi:10.1523/JNEUROSCI.1571-19.2019.
short: L. Piriya Ananda Babu, H.Y. Wang, K. Eguchi, L. Guillaud, T. Takahashi, Journal
of Neuroscience 40 (2020) 131–142.
date_created: 2020-01-19T23:00:38Z
date_published: 2020-01-02T00:00:00Z
date_updated: 2023-08-17T14:25:23Z
day: '02'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1523/JNEUROSCI.1571-19.2019
external_id:
isi:
- '000505167600013'
pmid:
- '31767677'
file:
- access_level: open_access
checksum: 92f5e8a47f454fc131fb94cd7f106e60
content_type: application/pdf
creator: dernst
date_created: 2020-01-20T14:44:10Z
date_updated: 2020-07-14T12:47:56Z
file_id: '7345'
file_name: 2020_JourNeuroscience_Piriya.pdf
file_size: 4460781
relation: main_file
file_date_updated: 2020-07-14T12:47:56Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 131-142
pmid: 1
publication: Journal of neuroscience
publication_identifier:
eissn:
- '15292401'
publication_status: published
publisher: Society for Neuroscience
quality_controlled: '1'
scopus_import: '1'
status: public
title: Microtubule and actin differentially regulate synaptic vesicle cycling to maintain
high-frequency neurotransmission
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: 40
year: '2020'
...
---
_id: '7665'
abstract:
- lang: eng
text: Acute brain slice preparation is a powerful experimental model for investigating
the characteristics of synaptic function in the brain. Although brain tissue is
usually cut at ice-cold temperature (CT) to facilitate slicing and avoid neuronal
damage, exposure to CT causes molecular and architectural changes of synapses.
To address these issues, we investigated ultrastructural and electrophysiological
features of synapses in mouse acute cerebellar slices prepared at ice-cold and
physiological temperature (PT). In the slices prepared at CT, we found significant
spine loss and reconstruction, synaptic vesicle rearrangement and decrease in
synaptic proteins, all of which were not detected in slices prepared at PT. Consistent
with these structural findings, slices prepared at PT showed higher release probability.
Furthermore, preparation at PT allows electrophysiological recording immediately
after slicing resulting in higher detectability of long-term depression (LTD)
after motor learning compared with that at CT. These results indicate substantial
advantages of the slice preparation at PT for investigating synaptic functions
in different physiological conditions.
article_number: '63'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Philipp
full_name: Velicky, Philipp
id: 39BDC62C-F248-11E8-B48F-1D18A9856A87
last_name: Velicky
orcid: 0000-0002-2340-7431
- first_name: Elena
full_name: Hollergschwandtner, Elena
id: 3C054040-F248-11E8-B48F-1D18A9856A87
last_name: Hollergschwandtner
- first_name: Makoto
full_name: Itakura, Makoto
last_name: Itakura
- first_name: Yugo
full_name: Fukazawa, Yugo
last_name: Fukazawa
- first_name: Johann G
full_name: Danzl, Johann G
id: 42EFD3B6-F248-11E8-B48F-1D18A9856A87
last_name: Danzl
orcid: 0000-0001-8559-3973
- first_name: Ryuichi
full_name: Shigemoto, Ryuichi
id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
last_name: Shigemoto
orcid: 0000-0001-8761-9444
citation:
ama: Eguchi K, Velicky P, Saeckl E, et al. Advantages of acute brain slices prepared
at physiological temperature in the characterization of synaptic functions. Frontiers
in Cellular Neuroscience. 2020;14. doi:10.3389/fncel.2020.00063
apa: Eguchi, K., Velicky, P., Saeckl, E., Itakura, M., Fukazawa, Y., Danzl, J. G.,
& Shigemoto, R. (2020). Advantages of acute brain slices prepared at physiological
temperature in the characterization of synaptic functions. Frontiers in Cellular
Neuroscience. Frontiers Media. https://doi.org/10.3389/fncel.2020.00063
chicago: Eguchi, Kohgaku, Philipp Velicky, Elena Saeckl, Makoto Itakura, Yugo Fukazawa,
Johann G Danzl, and Ryuichi Shigemoto. “Advantages of Acute Brain Slices Prepared
at Physiological Temperature in the Characterization of Synaptic Functions.” Frontiers
in Cellular Neuroscience. Frontiers Media, 2020. https://doi.org/10.3389/fncel.2020.00063.
ieee: K. Eguchi et al., “Advantages of acute brain slices prepared at physiological
temperature in the characterization of synaptic functions,” Frontiers in Cellular
Neuroscience, vol. 14. Frontiers Media, 2020.
ista: Eguchi K, Velicky P, Saeckl E, Itakura M, Fukazawa Y, Danzl JG, Shigemoto
R. 2020. Advantages of acute brain slices prepared at physiological temperature
in the characterization of synaptic functions. Frontiers in Cellular Neuroscience.
14, 63.
mla: Eguchi, Kohgaku, et al. “Advantages of Acute Brain Slices Prepared at Physiological
Temperature in the Characterization of Synaptic Functions.” Frontiers in Cellular
Neuroscience, vol. 14, 63, Frontiers Media, 2020, doi:10.3389/fncel.2020.00063.
short: K. Eguchi, P. Velicky, E. Saeckl, M. Itakura, Y. Fukazawa, J.G. Danzl, R.
Shigemoto, Frontiers in Cellular Neuroscience 14 (2020).
date_created: 2020-04-19T22:00:55Z
date_published: 2020-03-19T00:00:00Z
date_updated: 2023-08-21T06:12:48Z
day: '19'
ddc:
- '570'
department:
- _id: JoDa
- _id: RySh
doi: 10.3389/fncel.2020.00063
ec_funded: 1
external_id:
isi:
- '000525582200001'
file:
- access_level: open_access
checksum: 1c145123c6f8dc3e2e4bd5a66a1ad60e
content_type: application/pdf
creator: dernst
date_created: 2020-04-20T10:59:49Z
date_updated: 2020-07-14T12:48:01Z
file_id: '7668'
file_name: 2020_FrontiersCellularNeurosc_Eguchi.pdf
file_size: 9227283
relation: main_file
file_date_updated: 2020-07-14T12:48:01Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 2659CC84-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '793482'
name: 'Ultrastructural analysis of phosphoinositides in nerve terminals: distribution,
dynamics and physiological roles in synaptic transmission'
- _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: 265CB4D0-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03600
name: Optical control of synaptic function via adhesion molecules
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: Frontiers in Cellular Neuroscience
publication_identifier:
issn:
- '16625102'
publication_status: published
publisher: Frontiers Media
quality_controlled: '1'
scopus_import: '1'
status: public
title: Advantages of acute brain slices prepared at physiological temperature in the
characterization of synaptic functions
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: 14
year: '2020'
...
---
_id: '562'
abstract:
- lang: eng
text: Primary neuronal cell culture preparations are widely used to investigate
synaptic functions. This chapter describes a detailed protocol for the preparation
of a neuronal cell culture in which giant calyx-type synaptic terminals are formed.
This chapter also presents detailed protocols for utilizing the main technical
advantages provided by such a preparation, namely, labeling and imaging of synaptic
organelles and electrophysiological recordings directly from presynaptic terminals.
alternative_title:
- Methods in Molecular Biology
article_processing_charge: No
author:
- first_name: Dimitar
full_name: Dimitrov, Dimitar
last_name: Dimitrov
- first_name: Laurent
full_name: Guillaud, Laurent
last_name: Guillaud
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Tomoyuki
full_name: Takahashi, Tomoyuki
last_name: Takahashi
citation:
ama: 'Dimitrov D, Guillaud L, Eguchi K, Takahashi T. Culture of mouse giant central
nervous system synapses and application for imaging and electrophysiological analyses.
In: Skaper SD, ed. Neurotrophic Factors. Vol 1727. Springer; 2018:201-215.
doi:10.1007/978-1-4939-7571-6_15'
apa: Dimitrov, D., Guillaud, L., Eguchi, K., & Takahashi, T. (2018). Culture
of mouse giant central nervous system synapses and application for imaging and
electrophysiological analyses. In S. D. Skaper (Ed.), Neurotrophic Factors
(Vol. 1727, pp. 201–215). Springer. https://doi.org/10.1007/978-1-4939-7571-6_15
chicago: Dimitrov, Dimitar, Laurent Guillaud, Kohgaku Eguchi, and Tomoyuki Takahashi.
“Culture of Mouse Giant Central Nervous System Synapses and Application for Imaging
and Electrophysiological Analyses.” In Neurotrophic Factors, edited by
Stephen D. Skaper, 1727:201–15. Springer, 2018. https://doi.org/10.1007/978-1-4939-7571-6_15.
ieee: D. Dimitrov, L. Guillaud, K. Eguchi, and T. Takahashi, “Culture of mouse giant
central nervous system synapses and application for imaging and electrophysiological
analyses,” in Neurotrophic Factors, vol. 1727, S. D. Skaper, Ed. Springer,
2018, pp. 201–215.
ista: 'Dimitrov D, Guillaud L, Eguchi K, Takahashi T. 2018.Culture of mouse giant
central nervous system synapses and application for imaging and electrophysiological
analyses. In: Neurotrophic Factors. Methods in Molecular Biology, vol. 1727, 201–215.'
mla: Dimitrov, Dimitar, et al. “Culture of Mouse Giant Central Nervous System Synapses
and Application for Imaging and Electrophysiological Analyses.” Neurotrophic
Factors, edited by Stephen D. Skaper, vol. 1727, Springer, 2018, pp. 201–15,
doi:10.1007/978-1-4939-7571-6_15.
short: D. Dimitrov, L. Guillaud, K. Eguchi, T. Takahashi, in:, S.D. Skaper (Ed.),
Neurotrophic Factors, Springer, 2018, pp. 201–215.
date_created: 2018-12-11T11:47:11Z
date_published: 2018-01-01T00:00:00Z
date_updated: 2021-01-12T08:03:05Z
day: '01'
ddc:
- '570'
department:
- _id: RySh
doi: 10.1007/978-1-4939-7571-6_15
editor:
- first_name: Stephen D.
full_name: Skaper, Stephen D.
last_name: Skaper
external_id:
pmid:
- '29222783'
file:
- access_level: open_access
checksum: 8aa174ca65a56fbb19e9f88cff3ac3fd
content_type: application/pdf
creator: dernst
date_created: 2019-11-19T07:47:43Z
date_updated: 2020-07-14T12:47:09Z
file_id: '7046'
file_name: 2018_NeurotrophicFactors_Dimitrov.pdf
file_size: 787407
relation: main_file
file_date_updated: 2020-07-14T12:47:09Z
has_accepted_license: '1'
intvolume: ' 1727'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 201 - 215
pmid: 1
publication: Neurotrophic Factors
publication_status: published
publisher: Springer
publist_id: '7252'
quality_controlled: '1'
scopus_import: 1
status: public
title: Culture of mouse giant central nervous system synapses and application for
imaging and electrophysiological analyses
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1727
year: '2018'
...
---
_id: '472'
abstract:
- lang: eng
text: α-Synuclein is a presynaptic protein the function of which has yet to be identified,
but its neuronal content increases in patients of synucleinopa-thies including
Parkinson’s disease. Chronic overexpression of α-synuclein reportedly expresses
various phenotypes of synaptic dysfunction, but the primary target of its toxicity
has not been determined. To investigate this, we acutely loaded human recombinant
α-synuclein or its pathological mutants in their monomeric forms into the calyces
of Held presynaptic terminals in slices from auditorily mature and immature rats
of either sex. Membrane capacitance measurements revealed significant and specific
inhibitory effects of WT monomeric α-synuclein on vesicle endocytosis throughout
development. However, the α-synuclein A53T mutant affected vesicle endocytosis
only at immature calyces, where as the A30P mutant had no effect throughout. The
endocytic impairment by WTα-synuclein was rescued by intraterminal coloading of
the microtubule (MT) polymerization blocker nocodazole. Furthermore, it was reversibly
rescued by presynaptically loaded photostatin-1, a pho-toswitcheable inhibitor
of MT polymerization, inalight-wavelength-dependent manner. Incontrast, endocyticinhibition
by the A53T mutant at immature calyces was not rescued by nocodazole. Functionally,
presynaptically loaded WT α-synuclein had no effect on basal synaptic transmission
evoked at a low frequency, but significantly attenuated exocytosis and impaired
the fidelity of neurotransmission during prolonged high-frequency stimulation.
We conclude that monomeric WTα-synuclein primarily inhibits vesicle endocytosis
via MT overassembly, thereby impairing high-frequency neurotransmission.
author:
- first_name: Kohgaku
full_name: Eguchi, Kohgaku
id: 2B7846DC-F248-11E8-B48F-1D18A9856A87
last_name: Eguchi
orcid: 0000-0002-6170-2546
- first_name: Zachari
full_name: Taoufiq, Zachari
last_name: Taoufiq
- first_name: Oliver
full_name: Thorn Seshold, Oliver
last_name: Thorn Seshold
- first_name: Dirk
full_name: Trauner, Dirk
last_name: Trauner
- first_name: Masato
full_name: Hasegawa, Masato
last_name: Hasegawa
- first_name: Tomoyuki
full_name: Takahashi, Tomoyuki
last_name: Takahashi
citation:
ama: Eguchi K, Taoufiq Z, Thorn Seshold O, Trauner D, Hasegawa M, Takahashi T. Wild-type
monomeric α-synuclein can impair vesicle endocytosis and synaptic fidelity via
tubulin polymerization at the calyx of held. European Journal of Neuroscience.
2017;37(25):6043-6052. doi:10.1523/JNEUROSCI.0179-17.2017
apa: Eguchi, K., Taoufiq, Z., Thorn Seshold, O., Trauner, D., Hasegawa, M., &
Takahashi, T. (2017). Wild-type monomeric α-synuclein can impair vesicle endocytosis
and synaptic fidelity via tubulin polymerization at the calyx of held. European
Journal of Neuroscience. Wiley-Blackwell. https://doi.org/10.1523/JNEUROSCI.0179-17.2017
chicago: Eguchi, Kohgaku, Zachari Taoufiq, Oliver Thorn Seshold, Dirk Trauner, Masato
Hasegawa, and Tomoyuki Takahashi. “Wild-Type Monomeric α-Synuclein Can Impair
Vesicle Endocytosis and Synaptic Fidelity via Tubulin Polymerization at the Calyx
of Held.” European Journal of Neuroscience. Wiley-Blackwell, 2017. https://doi.org/10.1523/JNEUROSCI.0179-17.2017.
ieee: K. Eguchi, Z. Taoufiq, O. Thorn Seshold, D. Trauner, M. Hasegawa, and T. Takahashi,
“Wild-type monomeric α-synuclein can impair vesicle endocytosis and synaptic fidelity
via tubulin polymerization at the calyx of held,” European Journal of Neuroscience,
vol. 37, no. 25. Wiley-Blackwell, pp. 6043–6052, 2017.
ista: Eguchi K, Taoufiq Z, Thorn Seshold O, Trauner D, Hasegawa M, Takahashi T.
2017. Wild-type monomeric α-synuclein can impair vesicle endocytosis and synaptic
fidelity via tubulin polymerization at the calyx of held. European Journal of
Neuroscience. 37(25), 6043–6052.
mla: Eguchi, Kohgaku, et al. “Wild-Type Monomeric α-Synuclein Can Impair Vesicle
Endocytosis and Synaptic Fidelity via Tubulin Polymerization at the Calyx of Held.”
European Journal of Neuroscience, vol. 37, no. 25, Wiley-Blackwell, 2017,
pp. 6043–52, doi:10.1523/JNEUROSCI.0179-17.2017.
short: K. Eguchi, Z. Taoufiq, O. Thorn Seshold, D. Trauner, M. Hasegawa, T. Takahashi,
European Journal of Neuroscience 37 (2017) 6043–6052.
date_created: 2018-12-11T11:46:40Z
date_published: 2017-06-21T00:00:00Z
date_updated: 2021-01-12T08:00:51Z
day: '21'
doi: 10.1523/JNEUROSCI.0179-17.2017
extern: '1'
intvolume: ' 37'
issue: '25'
language:
- iso: eng
month: '06'
oa_version: None
page: 6043 - 6052
publication: European Journal of Neuroscience
publication_identifier:
issn:
- '02706474'
publication_status: published
publisher: Wiley-Blackwell
publist_id: '7348'
quality_controlled: '1'
status: public
title: Wild-type monomeric α-synuclein can impair vesicle endocytosis and synaptic
fidelity via tubulin polymerization at the calyx of held
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 37
year: '2017'
...