Cited by 261Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsTreatment of Major Depression

The DOI matches its Crossref record; 65 of the 65 references it cites were found in a registry or an index.

Specific Roles of AMPA Receptor Subunit GluR1 (GluA1) Phosphorylation Sites in Regulating Synaptic Plasticity in the CA1 Region of Hippocampus

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Abstract

Activity-dependent changes in excitatory synaptic transmission in the CNS have been shown to depend on the regulation of alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptors (AMPARs). In particular, several lines of evidence suggest that reversible phosphorylation of AMPAR subunit glutamate receptor 1 (GluR1, also referred to as GluA1 or GluR-A) plays a role in long-term potentiation (LTP) and long-term depression (LTD). We previously reported that regulation of serines (S) 831 and 845 on the GluR1 subunit may play a critical role in bidirectional synaptic plasticity in the Schaffer collateral inputs to CA1. Specifically, gene knockin mice lacking both S831 and S845 phosphorylation sites ("double phosphomutants"), where both serine residues were replaced by alanines (A), showed a faster decaying LTP and a deficit in LTD. To determine which of the two phosphorylation sites was responsible for the phenotype, we have now generated two lines of gene knockin mice: one that specifically lacks S831 (S831A mutants) and another that lacks only S845 (S845A mutants). We found that S831A mutants display normal LTP and LTD, whereas S845A mutants show a specific deficit in LTD. Taken together with our previous results from the "double phosphomutants," our data suggest that either S831 or S845 alone may support LTP, whereas the S845 site is critical for LTD expression.

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Crossref · 10.1152/jn.00835.2009

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  1. He K, Proc Natl Acad Sci USA

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Metadata

Authors
Lee, H.-K., Takamiya, K., He, K., Song, L., & Huganir, R. L.
Affiliations
  • Howard Hughes Medical Institute (US)
  • University of Maryland, College Park (US)
Corresponding author
Huganir, Richard L.
Venue
Journal of Neurophysiology
Published
2010-01
Volume
103
Issue
1
Pages
479-489
ISSN
  • 0022-3077 (ISSN-L)
  • 1522-1598
OpenAlex
W2162552344
Cited by
261
References
65
Citations by year
2026: 6 · 2025: 9 · 2024: 13 · 2023: 13 · 2022: 17 · 2021: 14 · 2020: 18 · 2019: 17 · 2018: 18 · 2017: 11 · 2016: 24 · 2015: 22 · 2014: 19 · 2013: 23 · 2012: 13
FWCI
5.13
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurophysiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Eye Institute (R01EY014882)
  • National Institute of Neurological Disorders and Stroke (R01NS036715)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Health Sciences › Medicine › Pharmacology (medical) › Treatment of Major Depression
Keywords
GluR1, AMPA receptors, GluR1 phosphorylation, long-term potentiation, long-term depression, bidirectional synaptic plasticity, hippocampal CA1, Schaffer collaterals, excitatory synaptic transmission
MeSH terms
Aging, Amino Acid Sequence, Animals, Base Sequence, Male, Mice, Inbred C57BL, Mice, Transgenic, Molecular Sequence Data, Mutation, Synaptic Transmission, Neurons, Phosphorylation, Synapses, Long-Term Potentiation, Receptors, AMPA, Long-Term Synaptic Depression, Mice, Gene Knock-In Techniques, CA1 Region, Hippocampal, In Vitro Techniques

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