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@ARTICLE{Chhabra:281358,
author = {Chhabra, Akshita and Hoffmann, Christian and Aguilar Perez,
Gerard and Korobeinikov, Aleksandr A and Rentsch, Jakob and
Hümpfer, Nadja and Kokwaro, Linda and Gnidovec, Luka and
Petrović, Arsen and Wallace, Jaqulin N and Tromm, Johannes
Vincent and Román-Vendrell, Cristina and Johnson, Emma C
and Ranković, Branislava and Perego, Eleonora and Volpi,
Tommaso and Fernández-Busnadiego, Rubén and Köster, Sarah
and Rizzoli, Silvio O and Ewers, Helge and Morgan, Jennifer
R and Milovanovic, Dragomir},
title = {{C}ondensates of synaptic vesicles and synapsin-1 mediate
actin sequestering and polymerization.},
journal = {The EMBO journal},
volume = {44},
number = {18},
issn = {0261-4189},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {DZNE-2025-01105},
pages = {5112 - 5148},
year = {2025},
abstract = {Neuronal communication relies on precisely maintained
synaptic vesicle (SV) clusters, which assemble via
liquid-liquid phase separation. This process requires
synapsins, the major synaptic phosphoproteins, which are
known to bind actin. Reorganization of SVs, synapsins, and
actin is a hallmark of synaptic activity, but the molecular
details of the interactions between these components remain
unclear. Here, we combine in vitro reconstitution with
expansion microscopy, super-resolution imaging, and
cryo-electron tomography to dissect the roles of
SV-synapsin-1 condensates in the organization of the
presynaptic actin cytoskeleton. Our results indicate that
condensation of synapsin-1 initiates actin polymerization.
This process enables SV-synapsin-actin assemblies to
facilitate the mesoscale organization of SV clusters along
axons, which is similar to the native presynaptic
organization observed at both lamprey and mammalian
synapses. Understanding the relationship between the actin
network and synapsin-synaptic vesicle condensates can help
elucidate how coordinated neurotransmission along the axon
enables circuit function and behavior.},
keywords = {Synaptic Vesicles: metabolism / Synaptic Vesicles:
ultrastructure / Synapsins: metabolism / Animals / Actins:
metabolism / Polymerization / Actin Cytoskeleton: metabolism
/ Synapses: metabolism / Actin (Other) / Liquid-Liquid Phase
Separation (Other) / Presynapses (Other) / Synapsin (Other)
/ Synaptic Vesicles (Other) / Synapsins (NLM Chemicals) /
Actins (NLM Chemicals)},
cin = {AG Milovanovic (Berlin)},
ddc = {570},
cid = {I:(DE-2719)1813002},
pnm = {351 - Brain Function (POF4-351)},
pid = {G:(DE-HGF)POF4-351},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40813925},
pmc = {pmc:PMC12436662},
doi = {10.1038/s44318-025-00516-y},
url = {https://pub.dzne.de/record/281358},
}