Evidence map›Paper›PMID 23911104›Full record

ArticleNeuron2013

An LRRTM4-HSPG complex mediates excitatory synapse development on dentate gyrus granule cells.

Tabrez J Siddiqui, Parisa Karimi Tari, Steven A Connor, Peng Zhang, Frederick A Dobie, Kevin She, Hiroshi Kawabe, Yu Tian Wang, Nils Brose, Ann Marie Craig

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Neuron, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers.

0numbers the graph read from it
0cells of the map it votes in
105citing papers in PubMed
5.3field-weighted citation impact, top 3% 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

105 citing papers in PubMed, 183 citations in OpenAlex.

  1. The enigma of vascular dementia: current state and emerging perspectives.Journal of neural transmission (Vienna, Austria : 1996) · 2026
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  5. Concordant transcriptional and morphological remodeling revealed bybioRxiv : the preprint server for biology · 2026
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  10. Cell-type-resolvedbioRxiv : the preprint server for biology · 2025
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  13. Comprehensive characterization of the RNA editing landscape in the human aging brains with Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
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  18. Review
  19. Genetic analysis of cognitive preservation in the midwestern Amish reveals a novel locus on chromosome 2.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

Tabrez J SiddiquiBrain Research Centre and Department of Psychiatry, University of British Columbia, Vancouver, BC V6T 2B5, Canada.
Parisa Karimi Tari
Steven A Connor
Peng Zhang
Frederick A Dobie
Kevin She
Hiroshi Kawabe
Yu Tian Wang
Nils Brose
Ann Marie Craig
University of British Columbia · CAMax Planck Institute of Experimental Medicine · DENanoscale Microscopy and Molecular Physiology of the Brain Cluster of Excellence 171 — DFG Research Center 103 · DE

Funding

Canadian Institutes of Health Research MOP-125967Canadian Institutes of Health Research MOP-84241
6 · The paper itself

Abstract

Selective synapse development determines how complex neuronal networks in the brain are formed. Complexes of postsynaptic neuroligins and LRRTMs with presynaptic neurexins contribute widely to excitatory synapse development, and mutations in these gene families increase the risk of developing psychiatric disorders. We find that LRRTM4 has distinct presynaptic binding partners, heparan sulfate proteoglycans (HSPGs). HSPGs are required to mediate the synaptogenic activity of LRRTM4. LRRTM4 shows highly selective expression in the brain. Within the hippocampus, we detected LRRTM4 specifically at excitatory postsynaptic sites on dentate gyrus granule cells. LRRTM4(-/-) dentate gyrus granule cells, but not CA1 pyramidal cells, exhibit reductions in excitatory synapse density and function. Furthermore, LRRTM4(-/-) dentate gyrus granule cells show impaired activity-regulated AMPA receptor trafficking. These results identifying cell-type-specific functions and multiple presynaptic binding partners for different LRRTM family members reveal an unexpected complexity in the design and function of synapse-organizing proteins.

Indexed as

Amino AcidsAnimalsAnimals, NewbornCells, CulturedChlorocebus aethiopsDentate GyrusDisks Large Homolog 4 ProteinEmbryo, MammalianExcitatory Postsynaptic PotentialsGuanylate KinasesHeparan Sulfate ProteoglycansHumansIn Vitro TechniquesLuminescent ProteinsMaleMembrane ProteinsAmino AcidsBsn protein, mouseDisks Large Homolog 4 ProteinDlg4 protein, mousedolaisoleucineGuanylate KinasesHeparan Sulfate ProteoglycansLRRTM4 protein, mouseLuminescent ProteinsMembrane ProteinsNerve Tissue ProteinsReceptors, AMPASynapsins

Identifiers

PMID23911104
OpenAlexW2076977967

What OpenQuestion holds

Textmetadata
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.