RNA interference in the nucleus: roles for small RNAs in transcription, epigenetics and beyond.

RNA interference in the nucleus: roles for small RNAs in transcription, epigenetics and beyond.
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DOI:
10.1038/nrg3355
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发表时间:
2013-02
期刊:
Nature reviews. Genetics
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其他
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除了在细胞质中的转录后基因沉默中的充分表征的作用之外,越来越多的功能正在出现在细胞核中。由小RNA指导的表观遗传修饰已显示在植物、真菌和动物中引起转录抑制。此外,越来越多的证据表明,RNAi通过与转录机制相互作用来调节转录。核小RNA包括小干扰RNA(siRNA)和PIWI相互作用RNA(皮尔纳),并且涉及核过程,如转座子调节、异染色质形成、发育基因调节和基因组稳定性。
A growing number of functions are emerging for RNAi in the nucleus, in addition to well-characterized roles in post-transcriptional gene silencing in the cytoplasm. Epigenetic modifications directed by small RNA have been shown to cause transcriptional repression in plants, fungi, and animals. Additionally growing evidence indicates that RNAi regulates transcription through interaction with transcriptional machinery. Nuclear small RNAs include small interfering RNA (siRNA) and PIWI-interacting RNA (piRNA) and are implicated in nuclear processes such as transposon regulation, heterochromatin formation, developmental gene regulation and genome stability.
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