Roles of Histone H2A Variants in Cancer Development, Prognosis, and Treatment

被引:3
|
作者
Lai, Po Man [1 ]
Chan, Kui Ming [1 ]
机构
[1] City Univ Hong Kong, Dept Biomed Sci, Hong Kong, Peoples R China
关键词
epigenetics; chromatin; histone variants; variants; cancers; H2A; histone 2A variants; EPITHELIAL-MESENCHYMAL TRANSITION; INACTIVE X-CHROMOSOME; CORE HISTONE; DNA-DAMAGE; NUCLEOSOME STABILITY; GAMMA-H2AX ASSAY; PERIPHERAL-BLOOD; GENE-EXPRESSION; REMOVES H2A.Z; CELL-CYCLE;
D O I
10.3390/ijms25063144
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Histones are nuclear proteins essential for packaging genomic DNA and epigenetic gene regulation. Paralogs that can substitute core histones (H2A, H2B, H3, and H4), named histone variants, are constitutively expressed in a replication-independent manner throughout the cell cycle. With specific chaperones, they can be incorporated to chromatin to modify nucleosome stability by modulating interactions with nucleosomal DNA. This allows the regulation of essential fundamental cellular processes for instance, DNA damage repair, chromosomal segregation, and transcriptional regulation. Among all the histone families, histone H2A family has the largest number of histone variants reported to date. Each H2A variant has multiple functions apart from their primary role and some, even be further specialized to perform additional tasks in distinct lineages, such as testis specific shortH2A (sH2A). In the past decades, the discoveries of genetic alterations and mutations in genes encoding H2A variants in cancer had revealed variants' potentiality in driving carcinogenesis. In addition, there is growing evidence that H2A variants may act as novel prognostic indicators or biomarkers for both early cancer detection and therapeutic treatments. Nevertheless, no studies have ever concluded all identified variants in a single report. Here, in this review, we summarize the respective functions for all the 19 mammalian H2A variants and their roles in cancer biology whilst potentiality being used in clinical setting.
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页数:37
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