Osteopontin mediates tumorigenic transformation of a preneoplastic murine cell line by suppressing anoikis: an Arg-Gly-Asp-dependent-focal adhesion kinase-caspase-8 axis.

Abstract excerpt

Osteopontin (OPN), an adhesive, matricellular glycoprotein, is a rate-limiting factor in tumor promotion of skin carcinogenesis. With a tumor promotion model, the JB6 Cl41.5a cell line, we have shown that suppressing 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced OPN expression markedly inhibits TPA-induced colony formation in soft agar, an assay indicative of tumorigenic transformation. Further, the addition...

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