Cited by 185Neuroscience and Neuropharmacology ResearchCellular transport and secretionGenetics and Neurodevelopmental Disorders

A critical role for PSD-95/AKAP interactions in endocytosis of synaptic AMPA receptors

Open access
Bhattacharyya, Samarjit, Biou, Virginie, Xu, Weifeng, Schlüter, Oliver, Malenka, Robert C·2009·Nature Neuroscience

Abstract

The endocytosis of AMPA receptors (AMPARs) underlies several forms of synaptic plasticity, including NMDA receptor (NMDAR)-dependent long-term depression (LTD), but the molecular mechanisms responsible for this trafficking remain unknown. We found that PSD-95, a major postsynaptic density protein, is important for NMDAR-triggered endocytosis of synaptic AMPARs in rat neuron cultures because of its binding to A kinase-anchoring protein 150 (AKAP150), a scaffold for specific protein kinases and phosphatases. Knockdown of PSD-95 with shRNA blocked NMDAR-triggered, but not constitutive or mGluR-triggered, endocytosis of AMPARs. Deletion of PSD-95's Src homology 3 and guanylate kinase-like domains, as well as a point mutation (L460P), both of which inhibit binding of PSD-95 to AKAP150, also blocked NMDAR-triggered AMPAR endocytosis. Furthermore, expression of a mutant AKAP150 that does not bind calcineurin inhibited this NMDAR-triggered trafficking event. Our results suggest that PSD-95's interaction with AKAP150 is critical for NMDAR-triggered AMPAR endocytosis and LTD, possibly because these scaffolds position calcineurin in the appropriate subsynaptic domain.

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 · 10.1038/nn.2249

Cites

49 of 49 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?

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

Research works printed but not linked: 1

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

Cited by

Sorted by citations

Authors
Bhattacharyya, S., Biou, V., Xu, W., Schlüter, O., & Malenka, R. C.
Affiliations
  • Stanford Medicine (US)
  • European Neuroscience Institute Göttingen (DE)
Corresponding author
Malenka, Robert C
Venue
Nature Neuroscience
Published
2009-01-25
Volume
12
Issue
2
Pages
172-181
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2082119586
Cited by
185
References
49
Citations by year
2026: 3 · 2025: 3 · 2024: 9 · 2023: 9 · 2022: 9 · 2021: 8 · 2020: 8 · 2019: 4 · 2018: 9 · 2017: 8 · 2016: 8 · 2015: 12 · 2014: 14 · 2013: 16 · 2012: 21
FWCI
9.01
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute of Mental Health (R37MH063394, R01MH063394, K99MH080310, MH080310, MH63394)
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 › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
PSD-95, AKAP150, AMPA receptor endocytosis, NMDA receptor, long-term depression, synaptic plasticity, calcineurin, postsynaptic density, protein kinase anchoring, metabotropic glutamate receptors, Src homology 3 domain
MeSH terms
Disks Large Homolog 4 Protein, Animals, Cells, Cultured, Endocytosis, Hippocampus, Membrane Proteins, Neuronal Plasticity, Neurons, Synapses, Receptors, N-Methyl-D-Aspartate, Mutagenesis, Rats, Sprague-Dawley, Protein Structure, Tertiary, Receptors, AMPA, src Homology Domains, Calcineurin, Protein Transport, Long-Term Synaptic Depression, Intracellular Signaling Peptides and Proteins, Rats, A Kinase Anchor Proteins

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