siRNA gelsolin knockdown induces epithelial-mesenchymal transition with a cadherin switch in human mammary epithelial cells.

Abstract:

:Epithelial-mesenchymal transition (EMT) describes a process occurring during development and oncogenesis by which epithelial cells obtain fibroblast-like properties and show reduced cell adhesion and increased motility. In this report, we demonstrated typical EMT in human mammary epithelial MCF10A small interfering (si)RNA gelsolin-knockdown cells. EMT was characterized by fibroblastic morphology, loss of contact inhibition and focus formation in monolayer growth, enhanced motility and invasiveness in vitro, increased actin filaments, overexpression of RAC, activation of both extracellular signal-regulated kinase and AKT, inactivation of glycogen synthase kinase-3, conversion of cadherin from the E- to N-type and induction of the transcription factor Snail. These results suggested that gelsolin functions as a switch that controls E- and N-cadherin conversion via Snail, and demonstrated that its knockdown leads to EMT in human mammary epithelial cells and possibly to the development of human mammary tumors.

journal_name

Int J Cancer

authors

Tanaka H,Shirkoohi R,Nakagawa K,Qiao H,Fujita H,Okada F,Hamada J,Kuzumaki S,Takimoto M,Kuzumaki N

doi

10.1002/ijc.21559

keywords:

subject

Has Abstract

pub_date

2006-04-01 00:00:00

pages

1680-91

issue

7

eissn

0020-7136

issn

1097-0215

journal_volume

118

pub_type

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