Somatic human ZBTB7A zinc finger mutations promote cancer progression.

Somatic human ZBTB7A zinc finger mutations promote cancer progression.
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DOI:
10.1038/onc.2015.371
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发表时间:
2016-06-09
期刊:
影响因子:
8
通讯作者:
Yuan ZM
Yuan ZM
中科院分区:
医学1区
文献类型:
--
作者:
Liu XS;Liu Z;Gerarduzzi C;Choi DE;Ganapathy S;Pandolfi PP;Yuan ZM

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我们最近报道,ZBTB7A 是关键糖酵解基因的真正转录抑制因子,其在人类癌症中的下调有助于肿瘤代谢。由于 ZBTB7A 表达减少仅在人类癌症的一个子集中发现,因此我们通过挖掘人类癌症基因组数据库探索了其失活的替代机制。我们在多种类型的人类癌症中发现了 ZBTB7A 的反复体细胞突变,其中锌指结构域内的突变显着富集。突变体的功能表征表明,ZBTB7A 锌指区域内的突变总是导致功能丧失。因此,携带 ZBTB7A 锌指突变的癌细胞中的糖酵解基因显着上调,导致糖酵解和增殖增加。我们的研究揭示了 ZBTB7A 的功能缺失突变是导致人类癌症糖酵解升高的一种新机制,具有重要的治疗意义。
We recently reported that ZBTB7A is a bona fide transcription repressor of key glycolytic genes and its downregulation in human cancer contributes to tumor metabolism. As reduced expression of ZBTB7A is found only in a subset of human cancers, we explored alternative mechanisms of its inactivation by mining human cancer genome databases. We discovered recurrent somatic mutations of ZBTB7A in multiple types of human cancers with a marked enrichment of mutations within the zinc finger domain. Functional characterization of the mutants demonstrated that mutations within the zinc finger region of ZBTB7A invariably resulted in loss of function. As a consequence, the glycolytic genes were markedly upregulated in cancer cells harboring ZBTB7A zinc finger mutation, leading to increased glycolysis and proliferation. Our study uncovers the loss-of-function mutation in ZBTB7A as a novel mechanism causing elevated glycolysis in human cancer, which carries important therapeutic implication.
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