Article
Reversible Smad-Dependent Signaling between Tumor Suppression and Oncogenesis
1 Jun 2007
Abstract excerpt
Cancer cells often gain advantage by reducing the tumor-suppressive activity of transforming growth factor-beta (TGF-beta) together with stimulation of its oncogenic activity as in Ras-transformed cells; however, molecular mechanisms remain largely unknown. TGF-beta activates both its type I receptor (TbetaRI) and c-Jun NH2-terminal kinase (JNK), which phosphorylate Smad2 and Smad3 at the COOH-terminal...
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