The miRNA Regulation of Stem Cells.

The miRNA Regulation of Stem Cells.
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DOI:
10.1002/wdev.5
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发表时间:
2012-01-01
影响因子:
--
通讯作者:
Lin, Haifan
Lin, Haifan
中科院分区:
生物学2区
文献类型:
--
作者:
Huang, Xiao Albert;Lin, Haifan

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miRNA通路作为基因调控的基本机制,在控制干细胞的建立、自我更新和分化中起着关键作用。这种调控表现为微调基因表达的时间和组织特异性。这种微调功能是通过以下方式实现的:(1)miRNAs与转录因子和表观遗传因子形成正反馈和负反馈回路,协同控制给定的生物过程;和/或(2)不同的mirna会聚在一起控制信号通路中的一个或多个mRNA靶点。这些调节机制存在于胚胎干细胞、iPS细胞和成体组织干细胞中。mirna的独特表达谱及其在各种类型干细胞中的调节作用使这些rna成为临床诊断和治疗的潜在有效工具。
The miRNA pathway, as a fundamental mechanism of gene regulation, plays a key role in controlling the establishment, self-renewal, and differentiation of stem cells. Such regulation is manifested as fine-tuning the temporal- and tissue-specificity of gene expression. This fine-tuning function is achieved by (1) miRNAs form positive and negative feedback loops with transcription factors and epigenetic factors to exert concerted control of given biological processes; and/or (2) different miRNAs converge to control one or more mRNA targets in a signaling pathway. These regulatory mechanisms are found in embryonic stem cells, iPS cells, and adult tissue stem cells. The distinct expression profiles of miRNAs and their regulatory roles in various types of stem cells render these RNAs potentially effective tools for clinical diagnosis and therapy.
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