miRNA goes nuclear.

miRNA goes nuclear.
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DOI:
10.4161/rna.19354
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发表时间:
2012-03
期刊:
影响因子:
4.1
通讯作者:
Li LC
Li LC
中科院分区:
生物学3区
文献类型:
--
作者:
Huang V;Li LC

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microRNAs(miRNAs)是一类由21-24个核苷酸组成的非编码RNA,是基因表达的重要调控因子。最初,miRNA的功能被认为是mRNA的转录后调节因子,导致mRNA降解和/或翻译抑制。越来越明显的是,miRNA不仅限于在细胞质中发挥作用,它们还可以通过编码区、5′和3′非翻译区(UTR)、启动子和基因末端等一系列靶向机制来调节其他细胞区室中的基因表达。在这个观点中,我们将特别关注miRNA的核功能,并讨论近年来发现的miRNA指导的转录基因调控的例子。
microRNAs (miRNAs), defined as 21–24 nucleotide non-coding RNAs, are important regulators of gene expression. Initially, the functions of miRNAs were recognized as post-transcriptional regulators on mRNAs that result in mRNA degradation and/or translational repression. It is becoming evident that miRNAs are not only restricted to function in the cytoplasm, they can also regulate gene expression in other cellular compartments by a spectrum of targeting mechanisms via coding regions, 5′ and 3′untransalated regions (UTRs), promoters, and gene termini. In this point-of-view, we will specifically focus on the nuclear functions of miRNAs and discuss examples of miRNA-directed transcriptional gene regulation identified in recent years.
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