Polycomb repressor complex 2 function in breast cancer (Review).

Polycomb repressor complex 2 function in breast cancer (Review).
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DOI:
10.3892/ijo.2020.5122
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发表时间:
2020-11
影响因子:
5.2
通讯作者:
Moorehead RA
Moorehead RA
中科院分区:
医学2区
文献类型:
--
作者:
Martin CJ;Moorehead RA

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表观遗传修饰是染色质内基因调控的重要贡献者。多梳抑制复合物2(PRC 2)是一种多亚基蛋白复合物,其通过组蛋白3处赖氨酸27的三甲基化(H3 K27 me 3)参与沉默基因表达。这种修饰的失调与致瘤性有关,其通过浓缩DNA以减少对肿瘤抑制基因启动子内的转录起始位点(TSS)的接近而增加对肿瘤抑制基因的抑制。在本综述中,PRC 2的核心蛋白,以及关键的辅助蛋白,将被描述。此外,机制控制招聘的PRC 2复杂的H3 K27将概述。最后,将总结鉴定PRC 2在乳腺癌增殖、凋亡和迁移中的作用的文献,包括长非编码RNA和miR-200家族的潜在作用,以及PRC 2复合物作为治疗靶点的潜在用途。
Epigenetic modifications are important contributors to the regulation of genes within the chromatin. The poly-comb repressive complex 2 (PRC2) is a multi-subunit protein complex that is involved in silencing gene expression through the trimethylation of lysine 27 at histone 3 (H3K27me3). The dysregulation of this modification has been associated with tumorigenicity through the increased repression of tumour suppressor genes via condensing DNA to reduce access to the transcription start site (TSS) within tumor suppressor gene promoters. In the present review, the core proteins of PRC2, as well as key accessory proteins, will be described. In addition, mechanisms controlling the recruitment of the PRC2 complex to H3K27 will be outlined. Finally, literature identifying the role of PRC2 in breast cancer proliferation, apoptosis and migration, including the potential roles of long non-coding RNAs and the miR-200 family will be summarized as will the potential use of the PRC2 complex as a therapeutic target.
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