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线粒体DNA损伤及其碱基切除修复的研究进展 被引量:1

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摘要 DNA对于细胞有氧代谢和外源性化合物产生的活性氧(reactive oxygen species,ROS)极其敏感。大量研究表明,ROS可引起多种类型的DNA氧化损伤,形成种类繁多的具有致突变作用的碱基氧化产物。线粒体DNA接近线粒体自由基的合成区域,因此氧化应激是诱导线粒体DNA突变的主要因素之一。线粒体DNA突变或损伤与机体衰老及肿瘤等生理及病理过程有关,其修复机制尤其是碱基切除修复是保证线粒体DNA完整性的重要途径。本文就其功能及在线粒体功能障碍相关疾病中的研究热点作一综述。
出处 《畜牧与兽医》 北大核心 2011年第9期100-104,共5页 Animal Husbandry & Veterinary Medicine
基金 生物新品种培育重大专项(2008ZX08008-003 2009ZX08008-006B)
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