ACF7 regulates colonic permeability.

Abstract:

:Colonic paracellular permeability is regulated by various factors, including dynamics of the cytoskeleton. Recently, ACF7 has been found to play a critical role in cytoskeletal dynamics as an essential integrator. To elucidate the physiological importance of ACF7 and paracellular permeability, we conditionally knocked out ACF7 in the intestinal mucosa of mice. Histopathological findings indicated that ACF7 deficiency resulted in significant interstitial proliferation and columnar epithelial cell rearrangement. Decreased colonic paracellular permeability was detected using a Ussing chamber and the FITC-inulin method. In order to clarify the underlying mechanism, we further analyzed the expression levels of three important tight junction proteins. Downregulation of ZO-1, occludin and claudin-1 was identified. Immunofluorescence provided strong evidence that ZO-1, occludin and claudin-1 were weakly stained. We hypothesized that ACF7 regulates cytoskeleton dynamics to alter mucosal epithelial arrangement and colonic paracellular permeability.

journal_name

Int J Mol Med

authors

Liang Y,Shi C,Yang J,Chen H,Xia Y,Zhang P,Wang F,Han H,Qin H

doi

10.3892/ijmm.2013.1284

subject

Has Abstract

pub_date

2013-04-01 00:00:00

pages

861-6

issue

4

eissn

1107-3756

issn

1791-244X

journal_volume

31

pub_type

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