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Down-regulation of vimentin expression inhibits carcinoma cell migration and adhesion.

McInroy, L. and Maatta, A. (2007) 'Down-regulation of vimentin expression inhibits carcinoma cell migration and adhesion.', Biochemical and biophysical research communications., 360 (1). pp. 109-114.


Vimentin is a type III Intermediate filament protein that is expressed frequently in epithelial carcinomas correlating with invasiveness and poor prognosis. We have analysed migration and adhesion to collagenous matrix of a panel of carcinoma cell lines. In vitro invasiveness was highest in vimentin-positive SW480 colon cancer and MDA-MB-231 breast cancer cells and the role of vimentin in these cell lines was investigated by RNA interference. Down-regulation of vimentin expression resulted in impaired migration in both scratch-wound experiments and in invasion assays through cell culture inserts coated with collagen gel. Compromised migration was observed in both cell lines, whereas cell attachment assays revealed impaired adhesion to fibrillar collagen in MDA-MB-231 cells while the adhesion of vimentin-ablated SW480 cells, that express both vimentin and keratin intermediate filaments was not affected. In conclusion, ablation of vimentin expression inhibits migration and invasion of colon and breast cancer cell lines.

Item Type:Article
Keywords:Intermediate filaments, Vimentin, RNA interference, Invasion, Cell migration, Cell adhesion.
Full text:Full text not available from this repository.
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Date accepted:No date available
Date deposited:No date available
Date of first online publication:August 2007
Date first made open access:No date available

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