Cited by 537Cellular transport and secretionNeuroscience and Neuropharmacology ResearchExtracellular vesicles in disease

Synapsins as Regulators of Neurotransmitter Release

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Hilfiker, Sabine, Pieribone, Vincent A., Czernik, Andrew J., Kao, Hung-Teh, Augustine, George J., Greengard, Paul·1999·Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences

Abstract

One of the crucial issues in understanding neuronal transmission is to define the role(s) of the numerous proteins that are localized within presynaptic terminals and are thought to participate in the regulation of the synaptic vesicle life cycle. Synapsins are a multigene family of neuron-specific phosphoproteins and are the most abundant proteins on synaptic vesicles. Synapsins are able to interact in vitro with lipid and protein components of synaptic vesicles and with various cytoskeletal proteins, including actin. These and other studies have led to a model in which synapsins, by tethering synaptic vesicles to each other and to an actin-based cytoskeletal meshwork, maintain a reserve pool of vesicles in the vicinity of the active zone. Perturbation of synapsin function in a variety of preparations led to a selective disruption of this reserve pool and to an increase in synaptic depression, suggesting that the synapsin-dependent cluster of vesicles is required to sustain release of neurotransmitter in response to high levels of neuronal activity. In a recent study performed at the squid giant synapse, perturbation of synapsin function resulted in a selective disruption of the reserve pool of vesicles and in addition, led to an inhibition and slowing of the kinetics of neurotransmitter release, indicating a second role for synapsins downstream from vesicle docking. These data suggest that synapsins are involved in two distinct reactions which are crucial for exocytosis in presynaptic nerve terminals. This review describes our current understanding of the molecular mechanisms by which synapsins modulate synaptic transmission, while the increasingly well-documented role of the synapsins in synapse formation and stabilization lies beyond the scope of this review.

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Crossref · 10.1098/rstb.1999.0378

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Authors
Hilfiker, S., Pieribone, V. A., Czernik, A. J., Kao, H.-T., Augustine, G. J., & Greengard, P.
Affiliations
  • Rockefeller University (US)
  • Yale University (US)
  • Duke Medical Center (US)
Corresponding author
Greengard, Paul
Venue
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences
Published
1999-02-28
Volume
354
Issue
1381
Pages
269-279
ISSN
  • 0962-8436 (ISSN-L)
  • 1471-2970
OpenAlex
W2022740810
Cited by
537
References
87
Citations by year
2026: 3 · 2025: 12 · 2024: 15 · 2023: 17 · 2022: 16 · 2021: 19 · 2020: 20 · 2019: 23 · 2018: 9 · 2017: 15 · 2016: 10 · 2015: 19 · 2014: 15 · 2013: 19 · 2012: 13
FWCI
1.37
Type
journal article
Language
en
Open access
Locations
  • Philosophical Transactions of the Royal Society B Biological Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
Keywords
synapsin, neurotransmitter release, synaptic vesicles, reserve pool, synaptic vesicle tethering, actin cytoskeleton, exocytosis, synaptic transmission, synaptic depression, squid giant synapse, presynaptic terminals, vesicle docking
MeSH terms
Animals, Humans, Lipids, Microscopy, Electron, Models, Neurological, Nerve Tissue Proteins, Neuronal Plasticity, Phosphorylation, Synapses, Gene Expression, Synapsins, Neurotransmitter Agents, In Vitro Techniques

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