染色质
表观遗传学
组蛋白
组蛋白密码
表观遗传学
组蛋白甲基化
组蛋白H1
组蛋白H2A
染色质重塑
遗传学
组蛋白修饰酶
癌症表观遗传学
生物
组蛋白甲基转移酶
细胞生物学
DNA甲基化
核小体
基因
基因表达
作者
Xuemin Yin,Dong Zeng,Yingjun Liao,Chengyuan Tang,Ying Li
出处
期刊:Biomolecules
[Multidisciplinary Digital Publishing Institute]
日期:2024-08-12
卷期号:14 (8): 993-993
被引量:1
摘要
Epigenetic regulation, which is characterized by reversible and heritable genetic alterations without changing DNA sequences, has recently been increasingly studied in diseases. Histone variant regulation is an essential component of epigenetic regulation. The substitution of canonical histones by histone variants profoundly alters the local chromatin structure and modulates DNA accessibility to regulatory factors, thereby exerting a pivotal influence on gene regulation and DNA damage repair. Histone H2A variants, mainly including H2A.Z, H2A.B, macroH2A, and H2A.X, are the most abundant identified variants among all histone variants with the greatest sequence diversity. Harboring varied chromatin occupancy and structures, histone H2A variants perform distinct functions in gene transcription and DNA damage repair. They are implicated in multiple pathophysiological mechanisms and the emergence of different illnesses. Cancer, embryonic development abnormalities, neurological diseases, metabolic diseases, and heart diseases have all been linked to histone H2A variant alterations. This review focuses on the functions of H2A histone variants in mammals, including H2A.Z, H2A.B, macroH2A, and H2A.X, and their current roles in various diseases.
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