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RNA干涉机制研究进展 被引量:1

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摘要 RNA干涉(RNAi)是近年来的研究热点,相关综述有很多。但随着研究的不断深入,RNAi的作用机制和影响变得越来越复杂,以致难以简单而准确地定义RNAi。新的研究发现主要有:(1)RNAi在异染色质形成中有重要作用,并影响染色质修饰的分布,如组蛋白H3K9甲基化和DNA甲基化。(2)在RNAi中会产生二级siRNA,使干涉效果增强;二级siRNA为不同的Argonaute家族蛋白所结合,其作用机制更加复杂。(3)新鉴定出具有RNAi作用的小RNA,如rasiRNA和piRNA,其产生和作用机制都与dsRNA和siRNA有所不同。此外,论文还介绍了RNAi在治疗癌症和人畜传染病等方面的应用,并对应用中出现的问题进行了讨论。
出处 《畜牧与兽医》 北大核心 2009年第6期99-102,共4页 Animal Husbandry & Veterinary Medicine
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共引文献25

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