Cited by 968Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersTreatment of Major Depression

AMPARs and Synaptic Plasticity: The Last 25 Years

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Huganir, Richard L., Nicoll, Roger A.·2013·Neuron

Abstract

The study of synaptic plasticity and specifically LTP and LTD is one of the most active areas of research in neuroscience. In the last 25 years we have come a long way in our understanding of the mechanisms underlying synaptic plasticity. In 1988, AMPA and NMDA receptors were not even molecularly identified and we only had a simple model of the minimal requirements for the induction of plasticity. It is now clear that the modulation of the AMPA receptor function and membrane trafficking is critical for many forms of synaptic plasticity and a large number of proteins have been identified that regulate this complex process. Here we review the progress over the last two and a half decades and discuss the future challenges in the field.

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Integrity signals

Registry

Crossref · 10.1016/j.neuron.2013.10.025

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  • The prevailing model posits that LTP-mediated covalent modification of the intracellular CTD of GluA1 results in capture of modified GluA1-containing receptors by preexisting slots in the PSD.

    “The prevailing model posits that LTP-mediated covalent modification of the intracellular CTD of GluA1 results in the capture of these modified GluA1-containing receptors by preexisting “slots” in the postsynaptic density (PSD) (17, 18, 212).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [17]

    In “Proposed Working Models for LTP” (page unavailable), the paper describes capture by preexisting PSD slots as one of three possible models, not the prevailing model. It explicitly says that C-terminal domains would be modulatory but not essential to that capture; modification of other receptor domains or auxiliary subunits would play the essential role. (LLM, conf=0.85)

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  • LTP requires an enhancement of synaptic AMPARs.

    “To summarize, LTP requires an enhancement of synaptic AMPARs (Huganir and Nicoll, 2013).”

    From The AMPA Receptor Code of Synaptic Plasticity (2018) · cites this paper as Huganir and Nicoll, 2013

    The Long-Term Potentiation section describes LTP-associated increases in AMPAR responses, supporting AMPAR enhancement as a common expression mechanism. But the Subunit Dependence section says LTP can be expressed with exogenously supplied kainate receptors, and the Conclusions say LTP mechanisms can act on either receptor type. Thus, the source does not support an absolute requirement for enhanced synaptic AMPARs. Page numbers were not provided in our copy. (LLM, conf=0.87)

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  • Cerebellar LTD, NMDAR-dependent LTD, and mGluR-dependent LTD are expressed by a decrease in synaptic AMPAR content.

    “Several major forms of LTD described in the brain including, cerebellar LTD and NMDAR-dependent and mGluR-dependent LTD, are expressed by a decrease in synaptic AMPAR content (Huganir and Nicoll, 2013).”

    From The AMPA Receptor Code of Synaptic Plasticity (2018) · cites this paper as Huganir and Nicoll, 2013

    The NMDAR-Dependent LTD section says there is general consensus that LTD-related depression reflects a loss of synaptic AMPARs. The Cerebellar LTD section describes AMPAR endocytosis and retention of GluA2 inside the cell. Although it says mGluR1 activation induces cerebellar LTD, the passages do not establish the claim for mGluR-dependent LTD as a separately named form. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • The induction of LTD requires PKA phosphorylation of GluA1 even though receptors are eventually dephosphorylated.

    “indicating that the induction of LTD requires PKA phosphorylation of GluA1 even though receptors are eventually dephosphorylated (Huganir and Nicoll, 2013).”

    From The AMPA Receptor Code of Synaptic Plasticity (2018) · cites this paper as Huganir and Nicoll, 2013

    The “AMPAR Phosphorylation and LTP” section reports significant deficits in LTD induction when GluA1 CaMKII and PKA phosphorylation sites cannot be phosphorylated, and reports that LTD decreases phosphorylation. But it does not establish that PKA phosphorylation of GluA1 is strictly required: the “NMDAR-Dependent LTD” section also notes normal LTD in mice lacking GluA1. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Forms of LTP, LTD and homeostatic scaling have been shown to be intact in knock-out mice of different AMPAR subunits as well as in molecular replacement experiments.

    “Forms of LTP, LTD and homeostatic scaling have been shown to be intact in knock-out mice of different AMPAR subunits as well as in using molecular replacement experiments (Huganir and Nicoll, 2013, Granger et al., 2013, Ancona Esselmann et al., 2017).”

    From The AMPA Receptor Code of Synaptic Plasticity (2018) · cites this paper as Huganir and Nicoll, 2013

    In “Subunit Dependence of AMPAR Trafficking and LTP and LTD” (page unavailable), the review reports that molecular replacement found no specific AMPAR-subunit requirement for LTP. “NMDAR-Dependent LTD” reports normal LTD in mice lacking GluA2/GluA3 or GluA1. The review describes homeostatic synaptic scaling in “Dynamic Regulation of AMPAR Membrane Trafficking,” but does not say it remains intact in AMPAR-subunit knockout mice or molecular replacement experiments. (LLM, conf=0.88)

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Research works printed but not linked: 1

  1. Malenka RC Bear MF LTP and LTD: an embarrassment of riches Neuron 2004 44 5 21 15450156

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Authors
Huganir, R. L., & Nicoll, R. A.
Affiliations
  • Johns Hopkins University (US)
  • University of California, San Francisco (US)
Corresponding author
  • Huganir, Richard L.
  • Nicoll, Roger A.
Venue
Neuron
Publisher
Elsevier BV
Published
2013-10
Volume
80
Issue
3
Pages
704-717
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2080640632
Cited by
968
References
182
Citations by year
2026: 54 · 2025: 62 · 2024: 75 · 2023: 58 · 2022: 65 · 2021: 94 · 2020: 87 · 2019: 72 · 2018: 99 · 2017: 89 · 2016: 79 · 2015: 73 · 2014: 58 · 2013: 2
FWCI
34.68
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
National Institute of Mental Health (R01MH070957)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
AMPA receptors, NMDA receptor, synaptic plasticity, long-term potentiation, long-term depression, receptor trafficking, receptor modulation
MeSH terms
Animals, Neuronal Plasticity, Neurosciences, Synapses, Receptors, AMPA, History, 20th Century, History, 21st Century

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