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首页> 外文期刊>Translational Medicine of Aging >Genome instability and aging: Cause or effect?
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Genome instability and aging: Cause or effect?

机译:基因组不稳定和衰老:原因或结果?

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Genome instability, i.e., the tendency of the genome to undergo alterations in DNA information content through mutation, is considered a hallmark of aging. While mutations can be analyzed in clonal lineages, such as tumors, normal tissues have thus far not been amenable to mutation analysis except for the largest type of mutations: chromosomal aberrations. This is because mutations are random events and, therefore, unique to a single cell. New, single-cell sequencing-based methods are now emerging and may soon provide quantitative assays for estimating the possible functional effects of mutations accumulating during aging in various tissues and organs. Here we briefly review the mechanisms of genome instability in normal cells, the accumulation of various types of genome instability with age and their possible physiological consequences.
机译:基因组不稳定性,即基因组通过突变经历DNA信息含量变化的趋势被认为是衰老的标志。尽管可以在克隆谱系(例如肿瘤)中分析突变,但是到目前为止,除了最大类型的突变:染色体畸变之外,正常组织还不适合进行突变分析。这是因为突变是随机事件,因此对于单个细胞是唯一的。基于单细胞测序的新方法正在兴起,并可能很快提供定量分析方法,以估计各种组织和器官在衰老过程中积累的突变可能产生的功能作用。在这里,我们简要回顾了正常细胞中基因组不稳定的机制,随着年龄的增长各种类型的基因组不稳定及其可能的生理后果。

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