Evidence map›Paper›PMID 17596509›Full record

ArticleMolecular biology of the cell2007

Rho/Rho-associated kinase-II signaling mediates disassembly of epithelial apical junctions.

Stanislav N Samarin, Andrei I Ivanov, Gilles Flatau, Charles A Parkos, Asma Nusrat

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

75 citing papers in PubMed, 153 citations in OpenAlex.

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  12. The cerebral cavernous malformation disease causing gene KRIT1 participates in intestinal epithelial barrier maintenance and regulation.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2019
    Article
  13. Cell polarization: From epithelial cells to odontoblasts.European journal of cell biology · 2019
    Review
  14. Article
  15. Article
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15 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

5 authors at 2 institutions in 2 countries.

Stanislav N SamarinEpithelial Pathobiology Research Unit, Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322, USA.
Andrei I Ivanov
Gilles Flatau
Charles A Parkos
Asma Nusrat
Emory University · USUniversité Côte d'Azur · FR

Funding

Regulation of intestinal epithelial barrier function by intercellular junction proteins in health and diseaseR01DK059888 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ASMA NUSRAT · 2001 to 2026
$10.5M
Intestinal Mucosal Wound Resealing in IBDR01DK055679 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ASMA NUSRAT · 2004 to 2026
$8.1M
Neutrophil Interactions with Intestinal Epithelial CellsR01DK072564 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI PARKOS, CHARLES A · 2005 to 2020
$6.5M
Structure-Function Studies on Intestinal Epithelial JAMR01DK061379 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI PARKOS, CHARLES A · 2002 to 2021
$6.3M
INTESTINAL MUCOSAL WOUND RESEALING IN SURGICAL DISEASESR29DK055679 · NIDDK · EMORY UNIVERSITY · PI NUSRAT, ASMA · 1998 to 2002
$324k
NIDDK NIH HHS DK-055679NIDDK NIH HHS DK-59888NIDDK NIH HHS DK-61379NIDDK NIH HHS DK-72564NIDDK NIH HHS R01 DK055679NIDDK NIH HHS R01 DK059888NIDDK NIH HHS R01 DK061379NIDDK NIH HHS R01 DK072564NIDDK NIH HHS R29 DK055679
6 · The paper itself

Abstract

Apical junctional complex (AJC) plays a vital role in regulation of epithelial barrier function. Disassembly of the AJC is observed in diverse physiological and pathological states; however, mechanisms governing this process are not well understood. We previously reported that the AJC disassembly is driven by the formation of apical contractile acto-myosin rings. In the present study, we analyzed the signaling pathways regulating acto-myosin-dependent disruption of AJC by using a model of extracellular calcium depletion. Pharmacological inhibition analysis revealed a critical role of Rho-associated kinase (ROCK) in AJC disassembly in calcium-depleted epithelial cells. Furthermore, small interfering RNA (siRNA)-mediated knockdown of ROCK-II, but not ROCK-I, attenuated the disruption of the AJC. Interestingly, AJC disassembly was not dependent on myosin light chain kinase and myosin phosphatase. Calcium depletion resulted in activation of Rho GTPase and transient colocalization of Rho with internalized AJC proteins. Pharmacological inhibition of Rho prevented AJC disassembly. Additionally, Rho guanine nucleotide exchange factor (GEF)-H1 translocated to contractile F-actin rings after calcium depletion, and siRNA-mediated depletion of GEF-H1 inhibited AJC disassembly. Thus, our findings demonstrate a central role of the GEF-H1/Rho/ROCK-II signaling pathway in the disassembly of AJC in epithelial cells.

Indexed as

Signal TransductionCalciumCell LineEnzyme ActivationEpithelial CellsGuanine Nucleotide Exchange FactorsHumansIntercellular JunctionsIntracellular Signaling Peptides and ProteinsModels, BiologicalMyosin-Light-Chain KinaseMyosin-Light-Chain PhosphataseProtein Kinase InhibitorsProtein Serine-Threonine KinasesProtein Transportrho-Associated KinasesARHGEF2 protein, humanCalciumGuanine Nucleotide Exchange FactorsIntracellular Signaling Peptides and ProteinsMyosin-Light-Chain KinaseMyosin-Light-Chain PhosphataseProtein Kinase InhibitorsProtein Serine-Threonine Kinasesrho-Associated Kinasesrho GTP-Binding ProteinsRho Guanine Nucleotide Exchange FactorsRNA, Small Interfering

Identifiers

PMID17596509
PMCPMC1951751
OpenAlexW2129138105

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.