Cisplatin restores TRAIL apoptotic pathway in glioblastoma-derived stem cells through up-regulation of DR5 and down-regulation of c-FLIP.

Cisplatin restores TRAIL apoptotic pathway in glioblastoma-derived stem cells through up-regulation of DR5 and down-regulation of c-FLIP.
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DOI:
10.3109/07357907.2011.605412
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发表时间:
2011-10
影响因子:
2.4
通讯作者:
Hao C
Hao C
中科院分区:
医学4区
文献类型:
--
作者:
Ding L;Yuan C;Wei F;Wang G;Zhang J;Bellail AC;Zhang Z;Olson JJ;Hao C

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胶质母细胞瘤来源的干细胞(GSCs)是肿瘤抵抗治疗的主要原因。我们在这里表明,富含GSC的神经球对肿瘤坏死因子相关的凋亡诱导配体(TRAIL)的治疗具有抵抗力,这是由于死亡受体DR4和DR5的表达不足,以及细胞内Fas相关死亡域样白介素1β转换酶抑制蛋白(c-FLIP)的过度表达。然而,用顺铂治疗后,神经球中DR5表达上调,c-flip表达下调,TRAIL凋亡通路恢复。本研究提示TRAIL联合顺铂可诱导胶质母细胞瘤细胞凋亡,为胶质母细胞瘤的治疗提供了一种有效的方法。
Glioblastoma-derived stem cells (GSCs) are responsible for the cancer resistance to therapies. We show here that GSC-enriched neurospheres are resistant to the treatment of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) due to the insufficient expression of the death receptor DR4 and DR5 and the overexpression of cellular Fas-associated death domain-like interleukin-1β-converting enzyme-inhibitory protein (c-FLIP). However, treatment with cisplatin leads to the upregulation of DR5 and downregulation of c-FLIP and restores TRAIL apoptotic pathway in the neurospheres. This study suggests that the combined treatment of TRAIL and cisplatin can induce apoptosis in GSCs and thus provide an effective treatment of glioblastomas.
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