Sensitizing non-small cell lung cancer to BCL-xL-targeted apoptosis.

Sensitizing non-small cell lung cancer to BCL-xL-targeted apoptosis.
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DOI:
10.1038/s41419-018-1040-9
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发表时间:
2018-09-24
影响因子:
9
通讯作者:
Shen H
Shen H
中科院分区:
生物学1区
文献类型:
--
作者:
Shen Q;Li J;Mai J;Zhang Z;Fisher A;Wu X;Li Z;Ramirez MR;Chen S;Shen H

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Lung cancer is the leading cause of death in the United States, with non-small cell lung cancers (NSCLC) accounting for 85% of all cases. By analyzing the expression profile of the pro-apoptotic and anti-apoptotic proteins, we have assigned NSCLCs into two distinct groups. While single agent treatment with the BCL-2/BCL-xL/BCL-w inhibitor ABT-263 (navitoclax) did not trigger apoptosis in either group, cells with a moderate to high level of MCL-1 expression were sensitive to ABT-263 treatment when MCL-1 expression was suppressed with a gene-specific siRNA. In contrast, those with a low MCL-1 expression did not undergo apoptosis upon combination treatment with ABT-263 and MCL-1 siRNA. Further studies revealed that cells with a low MCL-1 expression had low mitochondrial priming, and treatment with the chemotherapy drug docetaxel raised the mitochondrial priming level and consequently sensitized cells to ABT-263. These results establish a rationale for molecular profiling and a therapeutic strategy to treat NSCLC patients with pro-apoptotic anti-cancer drugs based on their MCL-1 expression level.
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