大脑中的体细胞突变:与衰老的关系?

Dana A.P. Evans , J. Peter, H. Burbach , Fred W. van Leeuwen
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引用次数: 43

摘要

遗传不稳定性通常被认为是衰老过程的基础,主要与减数分裂和有丝分裂有关。本文就非分裂神经元的DNA损伤与修复、体细胞突变和体细胞重组等与衰老有关的问题进行综述。总的来说,可以得出结论,诱变在大脑中发生的频率很高。目前的数据并没有提供明确的证据来证明DNA损伤的累积或随着年龄的增长大脑中DNA修复活性的变化。然而,一个线性增加与年龄相关的移码突变已被证明发生在老鼠的血管加压素神经元,揭示小说post-mitotic机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Somatic mutations in the brain: relationship to aging?

Genetic instability is generally thought to underlie the process of aging and is predominantly associated with meiosis and mitosis. This review will discuss DNA damage and repair, somatic mutations and somatic recombination events in non-dividing neurons in relation to aging. In general it can be concluded that mutagenesis operates at high frequency in the brain. Present data do not provide clear evidence for accumulating DNA damage or a change in DNA repair activity in the brain with age. However, a linear age-related increase in frameshift mutations has been shown to occur in vasopressin neurons of the rat, revealing a novel post-mitotic mechanism.

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