Cited by 235Neuroscience and Neuropharmacology ResearchCellular transport and secretionExtracellular vesicles in disease

Synaptic weight set by Munc13-1 supramolecular assemblies

Sakamoto, Hirokazu, Ariyoshi, Tetsuroh, Kimpara, Naoya, Sugao, Kohtaroh, Taiko, Isamu, Takikawa, Kenji, Asanuma, Daisuke, Namiki, Shigeyuki +1 more·2018·Nature Neuroscience

Abstract

The weight of synaptic connections, which is controlled not only postsynaptically but also presynaptically, is a key determinant in neuronal network dynamics. The mechanisms controlling synaptic weight, especially on the presynaptic side, remain elusive. Using single-synapse imaging of the neurotransmitter glutamate combined with super-resolution imaging of presynaptic proteins, we identify a presynaptic mechanism for setting weight in central glutamatergic synapses. In the presynaptic terminal, Munc13-1 molecules form multiple and discrete supramolecular self-assemblies that serve as independent vesicular release sites by recruiting syntaxin-1, a soluble N-ethylmaleimide-sensitive-factor attachment receptor (SNARE) protein essential for synaptic vesicle exocytosis. The multiplicity of these Munc13-1 assemblies affords multiple stable states conferring presynaptic weight, potentially encoding several bits of information at individual synapses. Supramolecular assembling enables a stable synaptic weight, which confers robustness of synaptic computation on neuronal circuits and may be a general mechanism by which biological processes operate despite the presence of molecular noise.

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Crossref · 10.1038/s41593-017-0041-9

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Authors
Sakamoto, H., Ariyoshi, T., Kimpara, N., Sugao, K., Taiko, I., Takikawa, K., Asanuma, D., Namiki, S., & Hirose, K.
Affiliations
The University of Tokyo (JP)
Corresponding author
Hirose, Kenzo
Venue
Nature Neuroscience
Published
2017-12-11
Volume
21
Issue
1
Pages
41-49
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2772190072
Cited by
235
References
61
Citations by year
2026: 21 · 2025: 27 · 2024: 33 · 2023: 26 · 2022: 34 · 2021: 32 · 2020: 31 · 2019: 18 · 2018: 11 · 2017: 2
FWCI
8.30
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (17K08584, 17H04029)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
Keywords
synaptic weights, Munc13-1, supramolecular self-assembly, presynaptic terminals, glutamate release, syntaxin-1, SNARE proteins, synaptic vesicle exocytosis, glutamatergic synapses, super-resolution imaging
MeSH terms
Animals, Calcium, Cells, Cultured, Cytoskeletal Proteins, Embryo, Mammalian, Exocytosis, Hippocampus, Nerve Tissue Proteins, Synaptic Transmission, Neurons, Neuropeptides, Synapses, Synaptic Vesicles, Rats, Sprague-Dawley, Presynaptic Terminals, Glutamic Acid, GTP-Binding Proteins, RNA, Small Interfering, Adaptor Proteins, Signal Transducing, Vesicular Glutamate Transport Protein 1, Syntaxin 1, Rats

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