Developmental shift to a mechanism of synaptic vesicle endocytosis requiring nanodomain Ca2+
Open accessAbstract
Ca(2+) is thought to be essential for the exocytosis and endocytosis of synaptic vesicles. However, the manner in which Ca(2+) coordinates these processes remains unclear, particularly at mature synapses. Using membrane capacitance measurements from calyx of Held nerve terminals in rats, we found that vesicle endocytosis is initiated primarily in Ca(2+) nanodomains around Ca(2+) channels, where exocytosis is triggered. Bulk Ca(2+) outside of the domain could also be involved in endocytosis at immature synapses, although only after extensive exocytosis at more mature synapses. This bulk Ca(2+)-dependent endocytosis required calmodulin and calcineurin activation at immature synapses, but not at more mature synapses. Similarly, GTP-independent endocytosis, which occurred after extensive exocytosis at immature synapses, became negligible after maturation. We propose that nanodomain Ca(2+) simultaneously triggers exocytosis and endocytosis of synaptic vesicles and that the molecular mechanisms underlying Ca(2+)-dependent endocytosis undergo major developmental changes at this fast central synapse.
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Several previous studies suggest that endocytosis becomes slower when neurons are treated with the high-affinity calcium chelator EGTA, which abolishes asynchronous release.
“Consistent with this notion, several previous studies suggest that endocytosis becomes slower when neurons are treated with the high-affinity calcium chelator EGTA, which abolishes asynchronous release77–81.”
From Membrane compression by synaptic vesicle exocytosis triggers ultrafast endocytosis (2023) · cites this paper as [78]
The Results (Effects of Ca2+ buffers on vesicle endocytosis; page unavailable) report that EGTA slowed endocytosis at immature rat calyces, though it had no effect after a short pulse at more mature calyces. The paper says EGTA strongly reduces transmitter release at immature calyces, but does not say it abolishes asynchronous release. (LLM, conf=0.87)
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Membrane compression by synaptic vesicle exocytosis triggers ultrafast endocytosis
Ogunmowo, T. H., Jing, H., Raychaudhuri, S., Kusick, G. F., Imoto, Y., Li, S., Itoh, K., Ma, Y., Jafri, H., Dalva, M. B., et al. (2023) · Nature Communications · doi:10.1038/s41467-023-38595-2 · Cited by 51 · see citing works
Synaptic Vesicle Recycling at the Developing Presynapse
Kim, N., & Cousin, M. A. (2025) · Journal of Neurochemistry · doi:10.1111/jnc.70206 · Cited by 2 · see citing works
“On the contrary, SV endocytosis at the Calyx of Held synapse displayed reduced sensitivity to calmodulin and CaN antagonists from P7–9 to P13–14, when SV retrieval was monitored using membrane capacitance as a surrogate for surface area (Yamashita et al. 2010).”
- Authors
- Yamashita, T., Eguchi, K., Saitoh, N., von Gersdorff, H., & Takahashi, T.
- Affiliations
- Okinawa Institute of Science and Technology Graduate University (JP)
- Doshisha University (JP)
- Corresponding author
- Yamashita, Takayuki
- Takahashi, Tomoyuki
- Venue
- Nature Neuroscience
- Published
- 2010-06-20
- Volume
- 13
- Issue
- 7
- Pages
- 838-844
- ISSN
- 1097-6256 (ISSN-L)
- 1546-1726
- PMC
- PMC3677945
- OpenAlex
- W2044167411
- Cited by
- 97
- References
- 1
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 10 · 2023: 7 · 2022: 2 · 2021: 4 · 2020: 4 · 2019: 5 · 2018: 5 · 2017: 6 · 2016: 6 · 2015: 7 · 2014: 9 · 2013: 7 · 2012: 7
- FWCI
- 3.50
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- Japan Science Society
- National Institutes of Health
- Japan Science and Technology Agency
- National Eye Institute (EY014043, R01EY014043)
- Core Research for Evolutional Science and Technology
- 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 › Physiology › Calcium signaling and nucleotide metabolism
- Keywords
- synaptic vesicle endocytosis, calcium nanodomains, calyx of Held, synapse maturation, exocytosis, calmodulin, calcineurin, GTP hydrolysis, calcium channels, hearing onset, membrane capacitance
- MeSH terms
- Animals, Auditory Pathways, Brain Stem, Calcium, Calmodulin, Endocytosis, Exocytosis, Synaptic Vesicles, Time Factors, Signal Transduction, Rats, Wistar, Calcineurin, Membrane Microdomains, Electric Capacitance, Rats, Neurogenesis, In Vitro Techniques
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