抑癌基因 EZH2 在乳腺癌中的非典型功能。
Noncanonical Functions of the Polycomb Group Protein EZH2 in Breast Cancer.
机构信息
Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan; Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan; Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan.
Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan; Rogel Cancer Center, University of Michigan, Ann Arbor, Michigan.
出版信息
Am J Pathol. 2021 May;191(5):774-783. doi: 10.1016/j.ajpath.2021.01.013. Epub 2021 Feb 6.
Enhancer of Zeste Homologue 2 (EZH2) is the catalytic subunit of the polycomb repressive complex 2 (PRC2) that is critical for determining cell identity. An epigenetic writer, EZH2 has a well-defined role in transcriptional repression by depositing trimethyl marks on lysine 27 of histone H3. However, there is mounting evidence that histone methyltransferases like EZH2 exert histone methyltransferase-independent functions. The relevance of these functions to breast cancer progression and their regulatory mechanisms are only beginning to become understood. Here, we review the current understanding of EZH2 H3K27me3-independent, noncanonical, functions and their regulation in breast cancer.
增强子结合锌指蛋白 2（EZH2）是多梳抑制复合物 2（PRC2）的催化亚基，对于确定细胞身份至关重要。EZH2 作为一种表观遗传写入器，通过在组蛋白 H3 的赖氨酸 27 上沉积三甲基标记，在转录抑制中发挥着明确的作用。然而，越来越多的证据表明，EZH2 等组蛋白甲基转移酶发挥着组蛋白甲基转移酶非依赖性的功能。这些功能与乳腺癌进展的相关性及其调控机制才刚刚开始被理解。在这里，我们综述了目前对 EZH2 H3K27me3 非依赖性、非典型功能及其在乳腺癌中的调控的认识。
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