Decreased levels of p26-Bcl-2, but not p30 phosphorylated Bcl-2, precede TGFbeta1-induced apoptosis in colorectal adenoma cells.

Abstract

Bcl-2 expression is confined to the base of the colonic crypt, whereas transforming growth factor beta (TGFbeta) is expressed in the upper crypt, as are the apoptotic death promoters, Bak and Bax. In colonic adenoma cells, TGFbeta induces a growth arrest. In some adenoma cell lines, this is accompanied by apoptosis and in others it is not. In this study, we… (More)

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