Evidence map›Paper›PMID 34077732›Full record

ArticleCell reports2021

PSD-95 protects synapses from β-amyloid.

Kim Dore, Zachary Carrico, Stephanie Alfonso, Marc Marino, Karin Koymans, Helmut W Kessels, Roberto Malinow

Open access · goldAbstract read
In one paragraph

Article in Cell reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 1 pooled it
10.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

93 citing papers in PubMed, 1 synthesis or guideline pooled it, 125 citations in OpenAlex.

  1. Pooled it
  2. Review
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  11. ESCRT-0 regulates AMPA receptor currents and CabioRxiv : the preprint server for biology · 2026
    Article
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  13. ProteinJournal of pharmaceutical analysis · 2026
    Review
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  15. Article
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  20. Article

33 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

Kim DoreCenter for Neural Circuits and Behavior, Department of Neuroscience and Section for Neurobiology, Division of Biology, University of California, San Diego, San Diego, CA 92093, USA. Electronic address: kdore@health.ucsd.edu.
Zachary CarricoCenter for Neural Circuits and Behavior, Department of Neuroscience and Section for Neurobiology, Division of Biology, University of California, San Diego, San Diego, CA 92093, USA.
Stephanie AlfonsoCenter for Neural Circuits and Behavior, Department of Neuroscience and Section for Neurobiology, Division of Biology, University of California, San Diego, San Diego, CA 92093, USA.
Marc MarinoCenter for Neural Circuits and Behavior, Department of Neuroscience and Section for Neurobiology, Division of Biology, University of California, San Diego, San Diego, CA 92093, USA.
Karin KoymansSwammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, the Netherlands.
Helmut W KesselsCenter for Neural Circuits and Behavior, Department of Neuroscience and Section for Neurobiology, Division of Biology, University of California, San Diego, San Diego, CA 92093, USA; Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, the Netherlands.
Roberto MalinowCenter for Neural Circuits and Behavior, Department of Neuroscience and Section for Neurobiology, Division of Biology, University of California, San Diego, San Diego, CA 92093, USA.
University of California, San Diego · USUniversity of Amsterdam · NL

Funding

U of Calif, San Diego Neuroscience Microscopy ImagingP30NS047101 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GLEESON, JOSEPH G, ZHENG, BINHAI · 2003 to 2022
$9.0M
Neurosciences Graduate Training ProgramT32NS061847 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Brenda L Bloodgood · 2008 to 2026
$7.7M
MECHANISMS OF SYNAPTIC LTP--SILENT SYNAPSESR01MH049159 · NIMH · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MALINOW, ROBERTO · 1997 to 2019
$4.7M
UCSD Leading the Advancement of Underrepresented Neuroscientists for Change (LAUNCH) Faculty Development ProgramR25NS117367 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Victoria B Risbrough, Joann Trejo · 2020 to 2026
$1.6M
Increasing synaptic PSD-95, a neuroprotection approach against Alzheimer's diseaseRF1AG067049 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DORE, KIM BOHEMIE · 2021 to 2021
$1.4M
NIA NIH HHS RF1 AG067049NIMH NIH HHS R01 MH049159NINDS NIH HHS P30 NS047101NINDS NIH HHS R25 NS117367NINDS NIH HHS T32 NS061847
6 · The paper itself

Abstract

Beta-amyloid (Aβ) depresses excitatory synapses by a poorly understood mechanism requiring NMDA receptor (NMDAR) function. Here, we show that increased PSD-95, a major synaptic scaffolding molecule, blocks the effects of Aβ on synapses. The protective effect persists in tissue lacking the AMPA receptor subunit GluA1, which prevents the confounding synaptic potentiation by increased PSD-95. Aβ modifies the conformation of the NMDAR C-terminal domain (CTD) and its interaction with protein phosphatase 1 (PP1), producing synaptic weakening. Higher endogenous levels or overexpression of PSD-95 block Aβ-induced effects on the NMDAR CTD conformation, its interaction with PP1, and synaptic weakening. Our results indicate that increased PSD-95 protects synapses from Aβ toxicity, suggesting that low levels of synaptic PSD-95 may be a molecular sign indicating synapse vulnerability to Aβ. Importantly, pharmacological inhibition of its depalmitoylation increases PSD-95 at synapses and rescues deficits caused by Aβ, possibly opening a therapeutic avenue against Alzheimer's disease.

Indexed as

NeuroprotectionAmyloid beta-PeptidesAnimalsDendritic SpinesDisks Large Homolog 4 ProteinFluorescence Resonance Energy TransferMiceMice, Inbred C57BLMice, KnockoutPalmitic AcidPhosphoprotein PhosphatasesProtein DomainsRatsRats, Sprague-DawleyReceptors, N-Methyl-D-AspartateSynapsesAmyloid beta-PeptidesDisks Large Homolog 4 ProteinPalmitic AcidPhosphoprotein PhosphatasesReceptors, N-Methyl-D-AspartateABHD17Alzheimer's diseaseFluorescence lifetime imagingFRET-FLIMion-flux independentneuroprotectionPalmostatin BPSD-95 palmitoylationspine densitySynapto-toxic signaling

Identifiers

PMID34077732
PMCPMC8237704
OpenAlexW3164819280

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.