Cholera toxin disrupts barrier function by inhibiting exocyst-mediated trafficking of host proteins to intestinal cell junctions.
Cholera toxin disrupts barrier function by inhibiting exocyst-mediated trafficking of host proteins to intestinal cell junctions.
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DOI:
10.1016/j.chom.2013.08.001
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发表时间:
2013-09-11
影响因子:
30.3
通讯作者:
Bier E
中科院分区:
文献类型:
--
作者:
Guichard A;Cruz-Moreno B;Aguilar B;van Sorge NM;Kuang J;Kurkciyan AA;Wang Z;Hang S;Pineton de Chambrun GP;McCole DF;Watnick P;Nizet V;Bier E
Cholera toxin (CT), a virulence factor elaborated by Vibrio cholerae, is sufficient to induce the severe diarrhea characteristic of cholera. The enzymatic moiety of CT (CtxA) increases cAMP synthesis in intestinal epithelial cells, leading to chloride ion (Cl−) efflux through the CFTR Cl− channel. To preserve electroneutrality and osmotic balance, sodium ions and water also flow into the intestinal lumen via a paracellular route. We find that CtxA-driven cAMP increase also inhibits Rab11/exocyst-mediated trafficking of host proteins including E-cadherin and Notch signaling components to cell-cell junctions in Drosophila, human intestinal epithelial cells, and ligated mouse ileal loops, thereby disrupting barrier function. Additionally, CtxA induces junctional damage, weight loss, and dye leakage in the Drosophila gut, contributing to lethality from live V. cholerae infection, all of which can be rescued by Rab11 over-expression. These barrier-disrupting effects of CtxA may act in parallel with Cl− secretion to drive the pathophysiology of cholera.
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影响因子:
29.4
作者:
Dahan S;Rabinowitz KM;Martin AP;Berin MC;Unkeless JC;Mayer L
通讯作者:
Mayer L
影响因子:
4.3
作者:
Apidianakis Y;Rahme LG
通讯作者:
Rahme LG
DOI:
10.1073/pnas.79.10.3162
发表时间:
1982-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
LEPPLA, SH
通讯作者:
LEPPLA, SH
DOI:
10.1111/j.1600-0854.2012.01353.x
发表时间:
2012-07
期刊:
Traffic (Copenhagen, Denmark)
影响因子:
--
作者:
Heider MR;Munson M
通讯作者:
Munson M
影响因子:
11.8
作者:
Langevin, J;Morgan, MJ;Bellaïche, Y
通讯作者:
Bellaïche, Y