Up-regulation of fibroblast growth factor-binding protein, by beta-catenin during colon carcinogenesis.

Ray, Ranjan; Cabal-Manzano, Rafael; Moser, Amy R; Waldman, Todd; Zipper, Laurie M; Aigner, Achim; Byers, Stephen W; Riegel, Anna T et al. · Cancer Res · 2003

basic_science · Level V

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Abstract

Fibroblast growth factor-binding protein (FGF-BP) releases immobilized FGFs from the extracellular matrix and can function as an angiogenic switch molecule in cancer. Here we show that FGF-BP is up-regulated in early dysplastic lesions of the human colon that are typically associated with a loss of adenomatous polyposis coli and up-regulation of beta-catenin. In addition, FGF-BP expression is induced in dysplastic lesions in ApcMin/+ mice in parallel with the up-regulation of beta-catenin. Also, in cell culture studies FGF-BP is induced by beta-catenin through direct activation of the FGF-BP gene promoter. We conclude that FGF-BP is a target gene of beta-catenin.

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