Cited by 133Neuroscience and Neuropharmacology ResearchCellular transport and secretionMemory and Neural Mechanisms

Postsynaptic Complexin Controls AMPA Receptor Exocytosis during LTP

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Ahmad, Mohiuddin, Polepalli, Jai S., Goswami, Debanjan, Yang, Xiaofei, Kaeser-Woo, Yea Jin, Südhof, Thomas C., Malenka, Robert C.·2012·Neuron

Abstract

Long-term potentiation (LTP) is a compelling synaptic correlate of learning and memory. LTP induction requires NMDA receptor (NMDAR) activation, which triggers SNARE-dependent exocytosis of AMPA receptors (AMPARs). However, the molecular mechanisms mediating AMPAR exocytosis induced by NMDAR activation remain largely unknown. Here, we show that complexin, a protein that regulates neurotransmitter release via binding to SNARE complexes, is essential for AMPAR exocytosis during LTP but not for the constitutive AMPAR exocytosis that maintains basal synaptic strength. The regulated postsynaptic AMPAR exocytosis during LTP requires binding of complexin to SNARE complexes. In hippocampal neurons, presynaptic complexin acts together with synaptotagmin-1 to mediate neurotransmitter release. However, postsynaptic synaptotagmin-1 is not required for complexin-dependent AMPAR exocytosis during LTP. These results suggest a complexin-dependent molecular mechanism for regulating AMPAR delivery to synapses, a mechanism that is surprisingly similar to presynaptic exocytosis but controlled by regulators other than synaptotagmin-1.

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Crossref · 10.1016/j.neuron.2011.11.020

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  • Blocking postsynaptic exocytosis by a variety of means blocks LTP/sLTP.

    “Numerous studies have shown that blocking postsynaptic exocytosis by a variety of means blocks LTP/sLTP (195, 249, 250, 332–338).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [333]

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Authors
Ahmad, M., Polepalli, J. S., Goswami, D., Yang, X., Kaeser-Woo, Y. J., Südhof, T. C., & Malenka, R. C.
Affiliations
  • Stanford Medicine (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Malenka, Robert C.
Venue
Neuron
Publisher
Elsevier BV
Published
2012-01
Volume
73
Issue
2
Pages
260-267
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2085433160
Cited by
133
References
51
Citations by year
2026: 5 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 4 · 2021: 9 · 2020: 10 · 2019: 8 · 2018: 15 · 2017: 11 · 2016: 12 · 2015: 18 · 2014: 10 · 2013: 13 · 2012: 3
FWCI
5.80
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (MH06334, R01MH063394, P50MH086403, P50 MH0864)
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 › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
complexin, long-term potentiation, SNARE complex, NMDA receptor activation, synaptotagmin-1, hippocampal neurons, neurotransmitter release regulation
MeSH terms
Animals, Exocytosis, Nerve Tissue Proteins, Synaptic Transmission, Neurons, Long-Term Potentiation, Receptors, AMPA, Excitatory Postsynaptic Potentials, Protein Transport, Adaptor Proteins, Vesicular Transport, SNARE Proteins, Synaptotagmin I, Mice, CA1 Region, Hippocampal, Post-Synaptic Density

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