An epigenetic gateway to brain tumor cell identity.

An epigenetic gateway to brain tumor cell identity.
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通往脑肿瘤细胞身份的表观遗传门户。

DOI:
10.1038/nn.4190
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发表时间:
2016-01
影响因子:
25
通讯作者:
Rich JN
Rich JN
中科院分区:
医学1区
文献类型:
--
作者:
Mack SC;Hubert CG;Miller TE;Taylor MD;Rich JN

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仅精确靶向遗传病变不足以延长脑肿瘤患者的生存期。脑癌细胞在其遗传、代谢和微环境组成方面是多样的,这解释了它们的表型异质性和对治疗的不同反应。这些因素在表观基因组水平上汇聚,代表了一个统一的节点,可以通过药理学抑制来破坏。异常表观基因组定义了许多儿童和成人脑癌,如DNA甲基化模式的广泛变化,组蛋白标记的重新分布和染色质结构的破坏所证明的。在这篇综述中,我们描述了脑癌表观遗传失调机制的遗传,代谢和微环境因素的收敛。我们讨论了在脑肿瘤中发现的异常表观遗传途径如何影响细胞身份,细胞状态和肿瘤转化,以及利用这些改变作为治疗脑癌的新治疗策略的潜力。
Precise targeting of genetic lesions alone has been insufficient to extend brain tumor patient survival. Brain cancer cells are diverse in their genetic, metabolic, and microenvironmental compositions, accounting for their phenotypic heterogeneity and disparate responses to therapy. These factors converge at the level of the epigenome, representing a unified node that can be disrupted by pharmacologic inhibition. Aberrant epigenomes define many childhood and adult brain cancers, as demonstrated by widespread changes to DNA methylation patterns, redistribution of histone marks, and disruption of chromatin structure. In this review, we describe the convergence of genetic, metabolic, and micro-environmental factors upon mechanisms of epigenetic deregulation in brain cancer. We discuss how aberrant epigenetic pathways identified in brain tumors affect cell identity, cell state, and neoplastic transformation, in addition to the potential to exploit these alterations as novel therapeutic strategies for the treatment of brain cancer.
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