Evidence map›Paper›PMID 22485163›Full record

ArticlePloS one2012

A membrane fusion protein αSNAP is a novel regulator of epithelial apical junctions.

Nayden G Naydenov, Bryan Brown, Gianni Harris, Michael R Dohn, Victor M Morales, Somesh Baranwal, Albert B Reynolds, Andrei I Ivanov

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.0field-weighted citation impact, top 16% 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

23 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Newly Identified Regulators of Ovarian Folliculogenesis and Ovulation.International journal of molecular sciences · 2020
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. A vesicle trafficking protein αSNAP regulates Paneth cell differentiation in vivo.Biochemical and biophysical research communications · 2017
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
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  18. Review
  19. Article
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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.

Nayden G NaydenovDepartment of Medicine, University of Rochester, Rochester, New York, United States of America.
Bryan Brown
Gianni Harris
Michael R Dohn
Victor M Morales
Somesh Baranwal
Albert B Reynolds
Andrei I Ivanov
University of Rochester · USVanderbilt University · US

Funding

Understanding and Controlling p120 Dysfunction in CRCP50CA095103 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI COFFEY, ROBERT J. · 2002 to 2017
$33.6M
PL20 AND CELL CELL ADHESIONR01CA055724 · NCI · VANDERBILT UNIVERSITY · PI REYNOLDS, ALBERT B · 1997 to 2010
$2.9M
A mouse model for p120 downregulation in cancerR01CA111947 · NCI · VANDERBILT UNIVERSITY · PI REYNOLDS, ALBERT B · 2005 to 2009
$1.7M
Junctional exocytosis and breakdown of the intestinal barrier in inflammationR01DK083968 · NIDDK · VIRGINIA COMMONWEALTH UNIVERSITY · PI IVANOV, ANDREI IVANOVICH · 2010 to 2014
$1.6M
Actin dynamics and regulation of epithelial barrier in intestinal inflammationR01DK084953 · NIDDK · VIRGINIA COMMONWEALTH UNIVERSITY · PI IVANOV, ANDREI IVANOVICH · 2010 to 2013
$1.3M
NCI NIH HHS P50 CA095103NCI NIH HHS P50 CA95103NCI NIH HHS R01 CA055724NCI NIH HHS R01 CA111947NIDDK NIH HHS R01 DK083968NIDDK NIH HHS R01 DK083968,NIDDK NIH HHS R01 DK084953
6 · The paper itself

Abstract

Tight junctions (TJs) and adherens junctions (AJs) are key determinants of the structure and permeability of epithelial barriers. Although exocytic delivery to the cell surface is crucial for junctional assembly, little is known about the mechanisms controlling TJ and AJ exocytosis. This study was aimed at investigating whether a key mediator of exocytosis, soluble N-ethylmaleimide sensitive factor (NSF) attachment protein alpha (αSNAP), regulates epithelial junctions. αSNAP was enriched at apical junctions in SK-CO15 and T84 colonic epithelial cells and in normal human intestinal mucosa. siRNA-mediated knockdown of αSNAP inhibited AJ/TJ assembly and establishment of the paracellular barrier in SK-CO15 cells, which was accompanied by a significant down-regulation of p120-catenin and E-cadherin expression. A selective depletion of p120 catenin effectively disrupted AJ and TJ structure and compromised the epithelial barrier. However, overexpression of p120 catenin did not rescue the defects of junctional structure and permeability caused by αSNAP knockdown thereby suggesting the involvement of additional mechanisms. Such mechanisms did not depend on NSF functions or induction of cell death, but were associated with disruption of the Golgi complex and down-regulation of a Golgi-associated guanidine nucleotide exchange factor, GBF1. These findings suggest novel roles for αSNAP in promoting the formation of epithelial AJs and TJs by controlling Golgi-dependent expression and trafficking of junctional proteins.

Indexed as

Adherens JunctionsAnimalsApoptosisbeta CateninCateninsCattleCell Adhesion MoleculesColonDelta CateninDown-RegulationEndoplasmic ReticulumEpithelial CellsGolgi ApparatusGuanine Nucleotide Exchange FactorsHumansIntercellular Junctionsbeta CateninCateninsCell Adhesion MoleculesDelta CateninGBF1 protein, humanGuanine Nucleotide Exchange FactorsSoluble N-Ethylmaleimide-Sensitive Factor Attachment Proteins

Identifiers

PMID22485163
PMCPMC3317505
OpenAlexW2010580393

What OpenQuestion holds

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LicenceCC BY
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.