Evidence map›Paper›PMID 25232106›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2014

Regulation of synaptic extracellular matrix composition is critical for proper synapse morphology.

Peri T Kurshan, Allan Q Phan, George J Wang, Matthew M Crane, Hang Lu, Kang Shen

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 34% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Pooled it
  2. Basement membrane patterning by spatial deployment of a secretion-regulating protease.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  8. Review
  9. Article
  10. The MeshCODE to scale-visualising synaptic binary information.Frontiers in cellular neuroscience · 2022
    Article
  11. Article
  12. Review
  13. The Mechanical Basis of Memory - the MeshCODE Theory.Frontiers in molecular neuroscience · 2021
    Article
  14. Article
  15. Article
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  18. Article
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  20. Article
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

6 authors at 2 institutions in 1 country.

Peri T KurshanDepartment of Biology, Howard Hughes Medical Institute, Stanford University, Stanford, California 94305 and.
Allan Q PhanDepartment of Biology, Howard Hughes Medical Institute, Stanford University, Stanford, California 94305 and.
George J WangDepartment of Biology, Howard Hughes Medical Institute, Stanford University, Stanford, California 94305 and.
Matthew M CraneInterdisciplinary Program in Bioengineering, Georgia Institute of Technology, Atlanta, Georgia 30332.
Hang LuInterdisciplinary Program in Bioengineering, Georgia Institute of Technology, Atlanta, Georgia 30332.
Kang ShenDepartment of Biology, Howard Hughes Medical Institute, Stanford University, Stanford, California 94305 and kangshen@stanford.edu.
Howard Hughes Medical Institute · USGeorgia Institute of Technology · US

Funding

Quantitative microscopy-based rapid phenotyping and screeningR01GM088333 · NIGMS · GEORGIA INSTITUTE OF TECHNOLOGY · PI LU, HANG · 2011 to 2018
$2.3M
Howard Hughes Medical InstituteNIGMS NIH HHS R01 GM088333
6 · The paper itself

Abstract

Synapses are surrounded by a layer of extracellular matrix (ECM), which is instrumental for their development and maintenance. ECM composition is dynamically controlled by proteases, but how the precise composition of the ECM affects synaptic morphology is largely unknown. Through an unbiased forward genetic screen, we found that Caenorhabditis elegans gon-1, a conserved extracellular ADAMTS protease, is required for maintaining proper synaptic morphology at the neuromuscular junction. In gon-1 mutants, once synapse formation is complete, motor neuron presynaptic varicosities develop into large bulbous protrusions that contain synaptic vesicles and active zone proteins. A concomitant overgrowth of postsynaptic muscle membrane is found in close apposition to presynaptic axonal protrusions. Mutations in the muscle-specific, actin-severing protein cofilin (unc-60) suppress the axon phenotype, suggesting that muscle outgrowth is necessary for presynaptic protrusions. gon-1 mutants can also be suppressed by loss of the ECM components collagen IV (EMB-9) and fibulin (FBL-1). We propose that GON-1 regulates a developmental switch out of an initial "pro-growth" phase during which muscle arms grow out and form synapses with motor neuron axons. We postulate that this switch involves degradation or reorganization of collagen IV (EMB-9), whereas FBL-1 opposes GON-1 by stabilizing EMB-9. Our results describe a mechanism for regulating synaptic ECM composition and reveal the importance of precise ECM composition for neuronal morphology and synapse integrity.

Indexed as

AnimalsCaenorhabditis elegans ProteinsCalcium-Binding ProteinsCollagen Type IVExtracellular MatrixMetalloendopeptidasesMicrofilament ProteinsMutationNeuromuscular JunctionSynapsesCaenorhabditis elegans ProteinsCalcium-Binding ProteinsCollagen Type IVfibulinGON-1 protein, C elegansMetalloendopeptidasesMicrofilament ProteinsUNC-60 protein, C elegansextracellular matrixmetalloproteinasesynapse

Identifiers

PMID25232106
PMCPMC4166155
OpenAlexW2027675232

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.