Roles of pRB in the Regulation of Nucleosome and Chromatin Structures.

Roles of pRB in the Regulation of Nucleosome and Chromatin Structures.
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DOI:
10.1155/2016/5959721
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发表时间:
2016
影响因子:
--
通讯作者:
Uchida C
Uchida C
中科院分区:
生物学3区
文献类型:
--
作者:
Uchida C

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视网膜母细胞瘤蛋白 (pRB) 与 E2F 和其他蛋白因子相互作用,在调节诱导细胞周期停滞、凋亡和分化的靶基因表达中发挥关键作用。 pRB 控制局部启动子活性,并能够通过组蛋白修饰、表观遗传变化、染色质重塑和染色体组织来改变核小体和/或染色体的结构。 pRB 的功能失活会扰乱这些细胞事件,并导致细胞生长失调和染色体不稳定,这是癌细胞的标志。 pRB 在核小体/染色质结构调节中的作用已被证明与肿瘤抑制有关。本综述重点关注 pRB 通过与组蛋白修饰剂和染色质因子的物理相互作用来控制核小体/染色质结构的能力,并描述了基于针对这些蛋白质因子的癌症治疗。
Retinoblastoma protein (pRB) interacts with E2F and other protein factors to play a pivotal role in regulating the expression of target genes that induce cell cycle arrest, apoptosis, and differentiation. pRB controls the local promoter activity and has the ability to change the structure of nucleosomes and/or chromosomes via histone modification, epigenetic changes, chromatin remodeling, and chromosome organization. Functional inactivation of pRB perturbs these cellular events and causes dysregulated cell growth and chromosome instability, which are hallmarks of cancer cells. The role of pRB in regulation of nucleosome/chromatin structures has been shown to link to tumor suppression. This review focuses on the ability of pRB to control nucleosome/chromatin structures via physical interactions with histone modifiers and chromatin factors and describes cancer therapies based on targeting these protein factors.
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