Transforming Growth Factor-β-mediated p15INK4BInduction and Growth Inhibition in Astrocytes Is SMAD3-dependent and a Pathway Prominently Altered in Human Glioma Cell Lines

Abstract excerpt

We sought to characterize the pathway by which the multifunctional cytokine transforming growth factor-beta (TGF-beta) inhibits the proliferation of normal astrocytes, and we analyzed the alterations in the TGF-beta pathway in human glioma cell lines. Upon TGF-beta treatment, primary rat astrocytes showed a significant decrease in DNA synthesis upon thymidine incorporation with a cell cycle arrest in the G(1)...

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