Synthetic lethal interaction of combined BCL-XL and MEK inhibition promotes tumor regressions in KRAS mutant cancer models.

Synthetic lethal interaction of combined BCL-XL and MEK inhibition promotes tumor regressions in KRAS mutant cancer models.
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DOI:
10.1016/j.ccr.2012.11.007
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发表时间:
2013-01-14
期刊:
影响因子:
50.3
通讯作者:
Engelman JA
Engelman JA
中科院分区:
医学1区
文献类型:
--
作者:
Corcoran RB;Cheng KA;Hata AN;Faber AC;Ebi H;Coffee EM;Greninger P;Brown RD;Godfrey JT;Cohoon TJ;Song Y;Lifshits E;Hung KE;Shioda T;Dias-Santagata D;Singh A;Settleman J;Benes CH;Mino-Kenudson M;Wong KK;Engelman JA

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KRAS is the most commonly mutated oncogene, yet no effective targeted therapies exist for KRAS mutant cancers. We developed a pooled shRNA-drug screen strategy to identify genes that, when inhibited, cooperate with MEK inhibitors to effectively treat KRAS mutant cancer cells. The anti-apoptotic BH3 family gene BCL-XL emerged as a top hit through this approach. ABT-263 (navitoclax), a chemical inhibitor that blocks the ability of BCL-XL to bind and inhibit pro-apoptotic proteins, in combination with a MEK inhibitor led to dramatic apoptosis in many KRAS mutant cell lines from different tissue types. This combination caused marked in vivo tumor regressions in KRAS mutant xenografts and in a genetically engineered KRAS-driven lung cancer mouse model, supporting combined BCL-XL/MEK inhibition as a potential therapeutic approach for KRAS mutant cancers.
有效使用 PI3K 和 MEK 抑制剂治疗突变型 Kras G12D 和 PIK3CA H1047R 小鼠肺癌。
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