Review

RhoA-ROCK Signal Transduction Pathways:Regulation on Tight Junction in Epithelial Cells

  • YU Changsong ,
  • JIA Gang ,
  • DENG Qiuhong ,
  • CHEN Xiaoling ,
  • WANG Kangning
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  • Animal Nutrition Institute, Sichuan Agricultural University, Ya'an 625014, China

Received date: 2013-03-07

  Online published: 2013-08-18

Abstract

Tight junction is an important component of the epithelial junctional complex and contributes to maintain functions of barrier, gating and contact between epithelial cells. The RhoA-ROCK signal transduction pathways play important roles in the formation and being functional of tight junction in many ways, e. g., the activation of RhoA is an initial process which keeps the physiological function of tight junction, however, the imbalance and over activation of RhoA will lead to the depolymerization of tight junction; RhoA-ROCK signal transduction pathways can modulate the paracellular permeability through affecting the synthesis and localization of tight junction; in addition, RhoA signaling can affect paracellular permeability by different molecular mechanisms ranging from the regulation of actinomyosin contraction and actin polymerization to direct the regulation of junctional membrane proteins. This article mainly summarized the structure and biological function of tight junction and RhoA-ROCK signal transduction pathways in the regulation of tight junction.

Cite this article

YU Changsong , JIA Gang , DENG Qiuhong , CHEN Xiaoling , WANG Kangning . RhoA-ROCK Signal Transduction Pathways:Regulation on Tight Junction in Epithelial Cells[J]. Chinese Journal of Animal Nutrition, 2013 , 25(9) : 1929 -1935 . DOI: 10.3969/j.issn.1006-267x.2013.09.004

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