Evidence map›Paper›PMID 34417170›Full record

ArticleScience advances2021

Subsynaptic positioning of AMPARs by LRRTM2 controls synaptic strength.

Austin M Ramsey, Ai-Hui Tang, Tara A LeGates, Xu-Zhuo Gou, Beatrice E Carbone, Scott M Thompson, Thomas Biederer, Thomas A Blanpied

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
6.7field-weighted citation impact, top 2% 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

64 citing papers in PubMed, 91 citations in OpenAlex.

  1. Article
  2. Transsynaptic linking of calcium channels and postsynaptic receptors at a dyadic synapse.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Review
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  11. Dynamic extracellular interactions with AMPA receptors.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  12. Synaptobrevin-2 disease variants reveal spatial constraints within the presynaptic active zone.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Article
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  18. Article
  19. Large Donor CRISPR for Whole-Coding Sequence Replacement of Cell Adhesion Molecule LRRTM2.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  20. Article

4 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

8 authors at 2 institutions in 1 country.

Austin M RamseyDepartment of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.ORCID https://orcid.org/0000-0002-5567-2619
Ai-Hui TangDepartment of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.ORCID https://orcid.org/0000-0003-3715-6714
Tara A LeGatesDepartment of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.ORCID https://orcid.org/0000-0002-6005-4786
Beatrice E CarboneDepartment of Neurology, Yale School of Medicine, New Haven, CT 06520, USA.
Scott M ThompsonDepartment of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.ORCID https://orcid.org/0000-0001-9844-9049
Thomas BiedererDepartment of Neurology, Yale School of Medicine, New Haven, CT 06520, USA.ORCID https://orcid.org/0000-0003-0912-1514
Thomas A BlanpiedDepartment of Physiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA. tblanpied@som.umaryland.edu.ORCID https://orcid.org/0000-0003-4957-557X
University of Maryland, Baltimore · USYale University · US

Funding

Internal Dynamics of the Postsynaptic DensityR37MH080046 · NIMH · UNIVERSITY OF MARYLAND BALTIMORE · PI Thomas A Blanpied · 2020 to 2026
$5.0M
Mechanisms of SynCAM-Induced Synapse FormationR01DA018928 · NIDA · YALE UNIVERSITY · PI BIEDERER, THOMAS · 2005 to 2021
$4.6M
Internal Dynamics of the Postsynaptic DensityR01MH080046 · NIMH · UNIVERSITY OF MARYLAND BALTIMORE · PI BLANPIED, THOMAS A · 2007 to 2019
$4.5M
Stress, Depression, Serotonin, and Plasticity of Excitatory TransmissionR01MH086828 · NIMH · UNIVERSITY OF MARYLAND BALTIMORE · PI THOMPSON, SCOTT M. · 2010 to 2019
$3.8M
Dynamic control of synapse organization and function by cleft-resident moleculesR01MH119826 · NIMH · YALE UNIVERSITY · PI BIEDERER, THOMAS, BLANPIED, THOMAS A · 2019 to 2023
$2.8M
Dynamic control of synaptic substructure and function by adhesion moleculesF31MH116583 · NIMH · UNIVERSITY OF MARYLAND BALTIMORE · PI RAMSEY, AUSTIN MICHAEL · 2018 to 2019
$74k
NIDA NIH HHS R01 DA018928NIMH NIH HHS F31 MH116583NIMH NIH HHS R01 MH080046NIMH NIH HHS R01 MH086828NIMH NIH HHS R01 MH119826NIMH NIH HHS R37 MH080046
6 · The paper itself

Abstract

Recent evidence suggests that nano-organization of proteins within synapses may control the strength of communication between neurons in the brain. The unique subsynaptic distribution of glutamate receptors, which cluster in nanoalignment with presynaptic sites of glutamate release, supports this hypothesis. However, testing it has been difficult because mechanisms controlling subsynaptic organization remain unknown. Reasoning that transcellular interactions could position AMPA receptors (AMPARs), we targeted a key transsynaptic adhesion molecule implicated in controlling AMPAR number, LRRTM2, using engineered, rapid proteolysis. Severing the LRRTM2 extracellular domain led quickly to nanoscale declustering of AMPARs away from release sites, not prompting their escape from synapses until much later. This rapid remodeling of AMPAR position produced significant deficits in evoked, but not spontaneous, postsynaptic receptor activation. These results dissociate receptor numbers from their nanopositioning in determination of synaptic function and support the novel concept that adhesion molecules acutely position receptors to dynamically control synaptic strength.

Identifiers

PMID34417170
PMCPMC8378824
OpenAlexW3195553897

What OpenQuestion holds

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Registered trials

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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.