The PRC2 complex directly regulates the cell cycle and controls proliferation in skeletal muscle.

The PRC2 complex directly regulates the cell cycle and controls proliferation in skeletal muscle.
复制标题

DOI:
10.1080/15384101.2020.1806448
复制
发表时间:
2020-09
期刊:
Cell cycle (Georgetown, Tex.)
影响因子:
--
通讯作者:
Davie JK
Davie JK
中科院分区:
其他
文献类型:
--
作者:
Adhikari A;Davie JK

文献摘要

参考文献

被引文献

相似文献

多梳抑制复合物 2 (PRC2) 是负责组蛋白 3 赖氨酸 27 (H3K27) 甲基化的重要发育调节因子。在这里,我们证明 PRC2 复合物调节骨骼肌细胞的细胞周期,以控制增殖和有丝分裂退出。 PRC2 复合物的催化亚基 EZH2 的耗尽表明 EZH2 是细胞活力所必需的,这表明 EZH2 促进增殖。我们发现EZH2直接抑制正细胞周期基因和负细胞周期基因,从而使PRC2复合物能够严格控制细胞周期。我们发现,适度抑制或消除 EZH2 会导致增殖增强和 S 期细胞积累。这种效应是通过 PRC2 复合物直接抑制细胞周期蛋白 D1 (Ccnd1) 和细胞周期蛋白 E1 (Ccne1) 介导的。我们的结果表明,PRC2 对增殖具有多效性,因为它可以抑制细胞生长,但显然也具有细胞活力所需的功能。有趣的是,我们还发现视网膜母细胞瘤蛋白基因(Rb1)是 PRC2 复合物的直接靶标。然而,EZH2 的适度消耗不足以维持 Rb1 表达,表明 PRC2 依赖性的细胞周期蛋白 D1 上调足以抑制 Rb1 表达。综上所述,我们的结果表明,PRC2 复合物以复杂的方式调节骨骼肌增殖,其中包括抑制 Ccnd1 和 Ccne1,从而抑制增殖,以及抑制有丝分裂退出和终末分化所需的 Rb1。
The polycomb repressive complex 2 (PRC2) is an important developmental regulator responsible for the methylation of histone 3 lysine 27 (H3K27). Here, we show that the PRC2 complex regulates the cell cycle in skeletal muscle cells to control proliferation and mitotic exit. Depletions of the catalytic subunit of the PRC2 complex, EZH2, have shown that EZH2 is required for cell viability, suggesting that EZH2 promotes proliferation. We found that EZH2 directly represses both positive and negative cell cycle genes, thus enabling the PRC2 complex to tightly control the cell cycle. We show that modest inhibition or depletion of EZH2 leads to enhanced proliferation and an accumulation of cells in S phase. This effect is mediated by direct repression of cyclin D1 (Ccnd1) and cyclin E1 (Ccne1) by the PRC2 complex. Our results show that PRC2 has pleiotropic effects on proliferation as it serves to restrain cell growth, yet clearly has a function required for cell viability as well. Intriguingly, we also find that the retinoblastoma protein gene (Rb1) is a direct target of the PRC2 complex. However, modest depletion of EZH2 is not sufficient to maintain Rb1 expression, indicating that the PRC2 dependent upregulation of cyclin D1 is sufficient to inhibit Rb1 expression. Taken together, our results show that the PRC2 complex regulates skeletal muscle proliferation in a complex manner that involves the repression of Ccnd1 and Ccne1, thus restraining proliferation, and the repression of Rb1, which is required for mitotic exit and terminal differentiation.
视网膜母细胞瘤抑制组蛋白H3赖氨酸27的蛋白质依赖性甲基化与不可逆的细胞周期出口有关。
DOI: 10.1083/jcb.200705051
发表时间: 2007-12-31
影响因子: 7.8
作者:
Blais, Alexandre;van Oevelen, Chris J. C.;Margueron, Raphael;Acosta-Alvear, Diego;Dynlacht, Brian David
通讯作者: Dynlacht, Brian David
MiR-214依赖性调节骨骼肌和胚胎干细胞中Polycomb蛋白EZH2的调节。
DOI: 10.1016/j.molcel.2009.08.008
发表时间: 2009-10-09
期刊: MOLECULAR CELL
影响因子: 16
作者:
Juan, Aster H.;Kumar, Roshan M.;Marx, Joseph G.;Young, Richard A.;Sartorelli, Vittorio
通讯作者: Sartorelli, Vittorio
DOI: 10.1186/s13072-018-0217-x
发表时间: 2018-08-17
影响因子: 3.9
作者:
Adhikari A;Davie J
通讯作者: Davie J
DOI: 10.1016/0955-0674(94)90046-9
发表时间: 1994-12-01
影响因子: 7.5
作者:
LASSAR, AB;SKAPEK, SX;NOVITCH, B
通讯作者: NOVITCH, B
DOI: 10.1128/mcb.18.2.753
发表时间: 1998-02-01
影响因子: 5.3
作者:
Lundberg, AS;Weinberg, RA
通讯作者: Weinberg, RA