Mitotic homologous recombination maintains genomic stability and suppresses tumorigenesis.

Mitotic homologous recombination maintains genomic stability and suppresses tumorigenesis.
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DOI:
10.1038/nrm2851
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发表时间:
2010-03
期刊:
Nature reviews. Molecular cell biology
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其他
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有丝分裂同源重组通过精确修复DNA双链断裂和在正常细胞代谢和外来侮辱中遇到的其他损伤来促进基因组稳定性。因此,同源重组修复在成人发育的增殖期和体细胞更新期间是必不可少的,以防止细胞死亡和DNA损伤的突变结果。哺乳动物编码同源重组蛋白的基因突变,包括BRCA1、BRCA2和PALB2,与发育异常和肿瘤的发生有关。最近的进展使人们对这些蛋白质之间的联系以及同源重组和DNA链交换的关键步骤有了更清晰的理解。
Mitotic homologous recombination promotes genome stability through the precise repair of DNA double-strand breaks and other lesions that are encountered during normal cellular metabolism and from exogenous insults. As a result, homologous recombination repair is essential during proliferative stages in development and during somatic cell renewal in adults to protect against cell death and mutagenic outcomes from DNA damage. Mutations in mammalian genes encoding homologous recombination proteins, including BRCA1, BRCA2 and PALB2, are associated with developmental abnormalities and tumorigenesis. Recent advances have provided a clearer understanding of the connections between these proteins and of the key steps of homologous recombination and DNA strand exchange.
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