Ovarian Biology Laboratory, Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, Australia.
Cell Mol Life Sci. 2018 Aug;75(15):2777-2792. doi: 10.1007/s00018-018-2833-9. Epub 2018 May 10.
Female fertility and offspring health are critically dependent on the maintenance of an adequate supply of high-quality oocytes. Like somatic cells, oocytes are subject to a variety of different types of DNA damage arising from endogenous cellular processes and exposure to exogenous genotoxic stressors. While the repair of intentionally induced DNA double strand breaks in gametes during meiotic recombination is well characterised, less is known about the ability of oocytes to repair pathological DNA damage and the relative contribution of DNA repair to oocyte quality is not well defined. This review will discuss emerging data suggesting that oocytes are in fact capable of efficient DNA repair and that DNA repair may be an important mechanism for ensuring female fertility, as well as the transmission of high-quality genetic material to subsequent generations.
女性的生育能力和后代健康取决于能否维持足够数量的高质量卵子。与体细胞一样,卵子会受到内源性细胞过程和外源性遗传毒性应激源暴露引起的各种不同类型的 DNA 损伤。尽管在减数分裂重组过程中对配子中有意诱导的 DNA 双链断裂的修复已有很好的描述,但对于卵子修复病理性 DNA 损伤的能力以及 DNA 修复对卵子质量的相对贡献了解较少。本文综述将讨论新出现的数据,这些数据表明卵子实际上能够有效地进行 DNA 修复,并且 DNA 修复可能是确保女性生育能力以及将高质量遗传物质传递给后代的重要机制。