Cited by 668Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsTreatment of Major Depression

NMDA Induces Long-Term Synaptic Depression and Dephosphorylation of the GluR1 Subunit of AMPA Receptors in Hippocampus

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Lee, Hey-Kyoung, Kameyama, Kimihiko, Huganir, Richard L, Bear, Mark F·1998·Neuron

Abstract

Brief bath application of N-methyl-D-aspartate (NMDA) to hippocampal slices produces long-term synaptic depression (LTD) in CA1 that is (1) sensitive to postnatal age, (2) saturable, (3) induced postsynaptically, (4) reversible, and (5) not associated with a change in paired pulse facilitation. Chemically induced LTD (Chem-LTD) and homosynaptic LTD are mutually occluding, suggesting a common expression mechanism. Using phosphorylation site-specific antibodies, we found that induction of chem-LTD produces a persistent dephosphorylation of the GluR1 subunit of AMPA receptors at serine 845, a cAMP-dependent protein kinase (PKA) substrate, but not at serine 831, a substrate of protein kinase C (PKC) and calcium/calmodulin-dependent protein kinase II (CaMKII). These results suggest that dephosphorylation of AMPA receptors is an expression mechanism for LTD and indicate an unexpected role of PKA in the postsynaptic modulation of excitatory synaptic transmission.

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Crossref · 10.1016/s0896-6273(00)80632-7

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Authors
Lee, H.-K., Kameyama, K., Huganir, R. L., & Bear, M. F.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
Bear, Mark F
Venue
Neuron
Publisher
Elsevier BV
Published
1998-11
Volume
21
Issue
5
Pages
1151-1162
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2109208582
Cited by
668
References
6
Citations by year
2026: 4 · 2025: 13 · 2024: 15 · 2023: 17 · 2022: 19 · 2021: 33 · 2020: 26 · 2019: 29 · 2018: 24 · 2017: 23 · 2016: 24 · 2015: 29 · 2014: 34 · 2013: 31 · 2012: 26
FWCI
9.03
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
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 › Treatment of Major Depression
Keywords
NMDA, long-term depression, AMPA receptors, GluR1 subunit, receptor dephosphorylation, protein kinase A, hippocampal CA1, postsynaptic modulation, excitatory synaptic transmission, paired-pulse facilitation
MeSH terms
Animals, Hippocampus, Male, Synaptic Transmission, Phosphorylation, Synapses, Time, N-Methylaspartate, Receptors, AMPA, Rats, Long-Evans, Rats, In Vitro Techniques

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