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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Regulation of cell growth and cyclin D1 expression by the constitutively active FRAP-p70s6K pathway in human pancreatic cancer cells.

The FRAP-p70s6K signaling pathway was found to be constitutively phosphorylated/active in MiaPaCa-2 and Panc-1 human pancreatic cancer cells and a pancreatic cancer tissue sample as judged by the retarded electrophoretic mobility of the two major FRAP downstream targets, p70s6K and 4E-BP1. Treatment of cells with rapamycin, a selective FRAP Inhibitor, inhibited basal p70s6K kinase activity and induced dephosphorylation of p70s6K and 4E-BP1. Moreover, rapamycin inhibited DNA synthesis as well as anchorage-dependent and -independent proliferation in MiaPaCa-2 and Panc-1 cells. Finally, rapamycin strikingly inhibited cyclin D1 expression in pancreatic cancer cells. Thus, inhibitors of the constitutively active FRAP-p70s6K pathway may provide a novel therapeutic approach for pancreatic cancer.[1]

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