ABCG2 downregulation in glioma stem cells enhances the therapeutic efficacy of demethoxycurcumin.
ABCG2 downregulation in glioma stem cells enhances the therapeutic efficacy of demethoxycurcumin.
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胶质瘤干细胞中 ABCG2 的下调增强了去甲氧基姜黄素的治疗效果
DOI:
10.18632/oncotarget.18018
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发表时间:
2017-06-27
期刊:
影响因子:
--
通讯作者:
Zhou Y
中科院分区:
文献类型:
--
作者:
Chen L;Shi L;Wang W;Zhou Y
We analyzed the role of ABCG2, a drug transporter, in determining the sensitivity of glioma stem cells (GSCs) to demethoxycurcumin (DMC). We first demonstrated that ABCG2 is more highly expressed in GSCs than primary astrocytes. Modulation of ABCG2 levels in GSCs by transfection of ABCG2 shRNA or a lentiviral vector encoding ABCG2 revealed an inverse relation between ABCG2 levels and DMC-induced GSC growth inhibition. Suppressing ABCG2 increased DMC-induced apoptosis and G0/G1 cell cycle arrest in GSCs. It also increased levels reactive oxygen species (ROS) in GSCs treated with DMC, resulting in increased cytochrome C and caspase-3 activity. When GSCs transfected with ABCG2 shRNA or overexpressing ABCG2 were xenografted and the tumor-bearing, immunodeficient mice were treated with DMC, ABCG2 expression suppressed the tumor proliferation rate (T/C %). These findings demonstrate that ABCG2 expression is critical for DMC resistance in GSCs and is a potential therapeutic target for GBM.
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