| Literature DB >> 19962667 |
Michael Hedvat1, Dennis Huszar, Andreas Herrmann, Joseph M Gozgit, Anne Schroeder, Adam Sheehy, Ralf Buettner, David Proia, Claudia M Kowolik, Hong Xin, Brian Armstrong, Geraldine Bebernitz, Shaobu Weng, Lin Wang, Minwei Ye, Kristen McEachern, Huawei Chen, Deborah Morosini, Kirsten Bell, Marat Alimzhanov, Stephanos Ioannidis, Patricia McCoon, Zhu A Cao, Hua Yu, Richard Jove, Michael Zinda.
Abstract
Persistent activation of Stat3 is oncogenic and is prevalent in a wide variety of human cancers. Chronic cytokine stimulation is associated with Stat3 activation in some tumors, implicating cytokine receptor-associated Jak family kinases. Using Jak2 inhibitors, we demonstrate a central role of Jaks in modulating basal and cytokine-induced Stat3 activation in human solid tumor cell lines. Inhibition of Jak2 activity is associated with abrogation of Stat3 nuclear translocation and tumorigenesis. The Jak2 inhibitor AZD1480 suppresses the growth of human solid tumor xenografts harboring persistent Stat3 activity. We demonstrate the essential role of Stat3 downstream of Jaks by inhibition of tumor growth using short hairpin RNA targeting Stat3. Our data support a key role of Jak kinase activity in Stat3-dependent tumorigenesis.Entities:
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Year: 2009 PMID： 19962667 PMCID： PMC2812011 DOI： 10.1016/j.ccr.2009.10.015
Source DB: PubMed Journal: Cancer Cell ISSN： 1535-6108 Impact factor: 31.743