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RNAi-dsRNA介导的基因沉默 被引量:8

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摘要 RNA干涉(RNA interference,RNAi)是双链RNA(double-strand RNA,dsRNA)介导的、序列特异的转录后基因沉默(posttranscriptional gene silencing,PTGS)现象,广泛存在于线虫、果蝇、植物、真菌及哺乳动物等多种生物体中。作为生物体中存在的一种普遍现象,RNAi是基因组水平的免疫现象,代表了进化过程中原始的基因组对抗来自外来基因表达的保护机制,它介导生物体对内源寄生性核酸及外源性病原核酸的防御,并调控蛋白编码基因的表达,具有十分诱人的应用前景。本文介绍了RNAi的特征、作用机制、生物学功能及其应用等方面的研究进展。
出处 《国外医学(遗传学分册)》 2004年第1期4-10,共7页 Foreign Medical Sciences(Section of Genetics )
基金 国家杰出青年科学基金(39925036)
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