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- W2014556504 abstract "Type I and type II interferons (IFNs) are known to exert antitumor effects on a variety of tissues and cell types. We have previously shown that the type I IFN IFNα induces the expression of the cyclin-dependent kinase inhibitor p21WAF1 and inhibits the cell cycle of the human prostate adenocarcinoma cell line, DU145, that carries mutations in the tumor suppressor gene products p53 and pRB. We now show that the type II IFN IFNγ similarly induces the expression of p21WAF1 and inhibits the cell cycle of DU145 cells. In addition, we show that while both IFNs exert antiproliferative activity, only IFNγ induced phenotypic changes in these cells that accompanied the antiproliferative effect. For example, IFNγ, but not IFNα, caused a significant reduction in epidermal growth factor receptor expression as well as an increase in the adhesion molecules intercellular adhesion molecule-1 and integrin α3. These phenotypic changes in DU145 cells are suggestive of the acquisition of a non-tumorigenic state. Consistent with these findings, IFNγ showed a significantly lower invasive ability in in vitro assays using invasion chambers. Thus, IFNγ inhibits both the cell cycle and the metastatic potential of DU145 cells independent of the p53 and RB status, and our data describe a mechanism for mediating the antitumor capabilities of IFNγ that bypasses tumor suppressor genes like p53. Int. J. Cancer77:138–145, 1998.© 1998 Wiley-Liss, Inc." @default.
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- W2014556504 title "IFNγ induction of p21WAF1 in prostate cancer cells: Role in cell cycle, alteration of phenotype and invasive potential" @default.
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- W2014556504 doi "https://doi.org/10.1002/(sici)1097-0215(19980703)77:1<138::aid-ijc21>3.0.co;2-9" @default.
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