PGC1α expression defines a subset of human melanoma tumors with increased mitochondrial capacity and resistance to oxidative stress.

PGC1α expression defines a subset of human melanoma tumors with increased mitochondrial capacity and resistance to oxidative stress.
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DOI:
10.1016/j.ccr.2012.11.020
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发表时间:
2013-03-18
期刊:
影响因子:
50.3
通讯作者:
Puigserver P
Puigserver P
中科院分区:
医学1区
文献类型:
--
作者:
Vazquez F;Lim JH;Chim H;Bhalla K;Girnun G;Pierce K;Clish CB;Granter SR;Widlund HR;Spiegelman BM;Puigserver P

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癌细胞使用不同的策略重新编程其代谢,以满足能量和合成代谢需求,以维持生长和生存。了解这些代谢程序的分子和遗传决定因素对于成功利用它们进行治疗至关重要。在这里,我们报告了致癌黑素细胞谱系特异性转录因子MITF驱动PGC1α(PPARGC 1A)在人类黑色素瘤和衍生细胞系中的过表达。在功能上,PGC1α阳性黑色素瘤细胞表现出线粒体能量代谢和ROS解毒能力增加,使其能够在氧化应激条件下存活。相反,PGC1α阴性黑色素瘤细胞糖酵解能力更强,对ROS诱导药物更敏感。这些结果表明,黑色素瘤中PGC1α水平的差异对其代谢、生物学和药物敏感性具有深远影响。
Cancer cells reprogram their metabolism using different strategies to meet energy and anabolic demands to maintain growth and survival. Understanding the molecular and genetic determinants of these metabolic programs is critical to successfully exploit them for therapy. Here, we report that the oncogenic melanocyte lineage-specification transcription factor MITF drives PGC1α (PPARGC1A) overexpression in a subset of human melanomas and derived cell lines. Functionally, PGC1α positive melanoma cells exhibit increased mitochondrial energy metabolism and ROS detoxification capacities that enables survival under oxidative stress conditions. Conversely, PGC1α negative melanoma cells are more glycolytic and sensitive to ROS-inducing drugs. These results demonstrate that differences in PGC1α levels in melanoma tumors have a profound impact in their metabolism, biology and drug sensitivity.
DOI: 10.1038/nature10539
发表时间: 2011-12-01
期刊: NATURE
影响因子: 64.8
作者:
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通讯作者: Bressac-de Paillerets, Brigitte
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发表时间: 2007-11-29
期刊: NATURE
影响因子: 64.8
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