TGF-β-induced cell-cycle arrest through the p21(WAF1/CIP1)-G1 cyclin/CDKS-p130 pathway in gastric-carcinoma cells

Young Do Yoo, Ju Youn Choi, Su J. Lee, Jun Suk Kim, Byung R. Min, Young I. Lee, Yoon K. Kang

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34 Citations (Scopus)


Transforming growth factor-β1 (TGF-β) inhibits cell-cycle progression of many types of cells by arresting them in G1/S phase through inhibition of the active cyclin-Cdk complexes that lead to inhibition of Rb phosphorylation. In gastric-cancer cells, SNU16, TGF-β treatment induced enhanced expression of p21(WAF1/CIP1) (p21), which inhibited the kinase activity of cyclin-D- and cyclin-E-associated Cdks and blocked p130 phosphorylation. TGF-β also enhanced the stability of p130, suggesting that hypophosphorylation of p130 and increased stability of p130 contribute to p130-mediated G arrest in gastric-cancer cells. Our results demonstrate that p21 and p130 are major downstream targets of TGF-β in gastric-cancer cells and that a p21-G1 cyclin/Cdks-p130/E2F pathway mediates growth inhibition by TGF-β in these cells.

Original languageEnglish
Pages (from-to)512-517
Number of pages6
JournalInternational Journal of Cancer
Issue number4
Publication statusPublished - 1999 Oct 28


ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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