Deregulated Myc requires MondoA/Mlx for metabolic reprogramming and tumorigenesis.

Deregulated Myc requires MondoA/Mlx for metabolic reprogramming and tumorigenesis.
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DOI:
10.1016/j.ccell.2014.11.024
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发表时间:
2015-02-09
期刊:
影响因子:
50.3
通讯作者:
Eisenman RN
Eisenman RN
中科院分区:
医学1区
文献类型:
--
作者:
Carroll PA;Diolaiti D;McFerrin L;Gu H;Djukovic D;Du J;Cheng PF;Anderson S;Ulrich M;Hurley JB;Raftery D;Ayer DE;Eisenman RN

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Myc基因失调会转录重编程细胞代谢以促进肿瘤形成。在这里,我们表明,致癌的Myc需要Myc超家族成员MondoA,营养感应转录因子,肿瘤发生。MondoA或其二聚化配偶体Mlx的敲低阻断Myc诱导的导致细胞凋亡的多种代谢途径的重编程。Myc和MondoA共同调控的基因的鉴定和敲除使我们能够定义去调控的Myc所需的代谢功能,并证明脂质生物合成在Myc驱动的癌症的存活中的关键作用。此外,Myc和MondoA共调节基因的子集的过表达与患有多种癌症的患者的不良结果相关。Myc和MondoA对癌症代谢的共调节为旨在抑制MondoA及其靶基因的治疗提供了潜力。
Deregulated Myc transcriptionally reprograms cell metabolism to promote neoplasia. Here we show that oncogenic Myc requires the Myc superfamily member MondoA, a nutrient-sensing transcription factor, for tumorigenesis. Knockdown of MondoA, or its dimerization partner Mlx, blocks Myc-induced reprogramming of multiple metabolic pathways resulting in apoptosis. Identification, and knockdown, of genes co-regulated by Myc and MondoA has allowed us to define metabolic functions required by deregulated Myc and demonstrate a critical role for lipid biosynthesis in survival of Myc-driven cancer. Furthermore, overexpression of a subset of Myc and MondoA co-regulated genes correlates with poor outcome of patients with diverse cancers. Co-regulation of cancer metabolism by Myc and MondoA provides the potential for therapeutics aimed at inhibiting MondoA and its target genes.
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