The JAK2 inhibitor AZD1480 potently blocks Stat3 signaling and oncogenesis in solid tumors.

The JAK2 inhibitor AZD1480 potently blocks Stat3 signaling and oncogenesis in solid tumors.
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DOI:
10.1016/j.ccr.2009.10.015
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发表时间:
2009-12-08
期刊:
影响因子:
50.3
通讯作者:
Zinda M
Zinda M
中科院分区:
医学1区
文献类型:
--
作者:
Hedvat M;Huszar D;Herrmann A;Gozgit JM;Schroeder A;Sheehy A;Buettner R;Proia D;Kowolik CM;Xin H;Armstrong B;Bebernitz G;Weng S;Wang L;Ye M;McEachern K;Chen H;Morosini D;Bell K;Alimzhanov M;Ioannidis S;McCoon P;Cao ZA;Yu H;Jove R;Zinda M

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STAT3的持续激活是致癌的,在多种人类癌症中普遍存在。在一些肿瘤中,慢性细胞因子刺激与STAT3激活有关,这与细胞因子受体相关的JAK家族激酶有关。使用JAK2抑制剂,我们证明了JAKS在调节基础和细胞因子诱导的人类实体瘤细胞系中STAT3激活的中心作用。JAK2活性的抑制与STAT3核移位和肿瘤的发生有关。JAK2抑制剂AZD1480抑制具有持续STAT3活性的人实体瘤移植瘤的生长。我们通过使用针对STAT3的shRNA抑制肿瘤生长,证明了STAT3在JAKS下游的重要作用。我们的数据支持JAK激酶活性在STAT3依赖的肿瘤发生中的关键作用。
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 shRNA targeting Stat3. Our data support a key role of Jak kinase activity in Stat3-dependent tumorigenesis.
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