Cited by 341Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsTreatment of Major Depression

Postsynaptic Density-95 Mimics and Occludes Hippocampal Long-Term Potentiation and Enhances Long-Term Depression

Open access
Stein, Valentin, House, David R. C., Bredt, David S., Nicoll, Roger A.·2003·The Journal of Neuroscience

Abstract

Previous studies have shown that overexpression of the protein PSD-95 (postsynaptic density-95) selectively enhances AMPA receptor-mediated synaptic responses in hippocampal pyramidal cells. To determine whether this effect is related to synaptic plasticity at these synapses, we examined whether PSD-95 expression mimics long-term potentiation (LTP), and also whether it influences LTP and long-term depression (LTD) in hippocampal slice cultures. Using simultaneous recording from transfected or infected cells and control pyramidal cells, we found that PSD-95, similar to LTP, increases the amplitude and frequency of miniature EPSCs. It also converts silent synapses to functional synapses, as does LTP. In addition, LTP is completely occluded in cells expressing PSD-95, whereas LTD is greatly enhanced. These results suggest that common mechanisms are involved in controlling synaptic AMPA receptors by PSD-95 and synaptic plasticity.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1523/jneurosci.23-13-05503.2003

Cites

15 of 15 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Overexpression of PSD-95 potentiates AMPAR EPSCs and occludes LTP, and the S73D mutant causes similar potentiation.

    “since overexpression of PSD-95 on its own potentiates AMPAR EPSCs and occludes LTP (131, 297, 298) and the S73D mutant causes a similar potentiation.”

    From Synaptic memory and CaMKII (2023) · cites this paper as [297]

  • The quantity of surface receptors controls synaptic strength.

    “The quantity of surface receptors controls synaptic strength [57-59]; therefore, reduction of both synaptic transmission and plasticity in the Shank3 heterozygotes would support a mechanism involving altered AMPA receptor trafficking.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Stein, V., House, D. R. C., Bredt, D. S., & Nicoll, R. A.
Affiliations
University of California, San Francisco (US)
Venue
The Journal of Neuroscience
Published
2003-07-02
Volume
23
Issue
13
Pages
5503-5506
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2155715182
Cited by
341
References
15
Citations by year
2026: 7 · 2025: 6 · 2024: 11 · 2023: 13 · 2022: 10 · 2021: 10 · 2020: 18 · 2019: 16 · 2018: 11 · 2017: 15 · 2016: 15 · 2015: 14 · 2014: 15 · 2013: 18 · 2012: 11
FWCI
5.56
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association
  • Bristol-Myers Squibb
  • Deutsche Forschungsgemeinschaft
  • National Institutes of Health
  • Center for Neuroscience Research
  • National Cancer Institute (R01CA094143)
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
PSD-95, postsynaptic density, long-term potentiation, long-term depression, synaptic plasticity, AMPA receptors, hippocampal pyramidal neurons, miniature EPSCs, silent synapses, synaptic transmission, hippocampal slice cultures
MeSH terms
Disks Large Homolog 4 Protein, Animals, Cells, Cultured, Hippocampus, Humans, Luminescent Proteins, Membrane Proteins, Nerve Tissue Proteins, Neuronal Plasticity, Recombinant Fusion Proteins, Synapses, Transfection, Long-Term Potentiation, Pyramidal Cells, Receptors, AMPA, Excitatory Postsynaptic Potentials, Long-Term Synaptic Depression, Intracellular Signaling Peptides and Proteins, Green Fluorescent Proteins, Rats, In Vitro Techniques

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review