Deep sequencing reveals novel microRNAs and regulation of microRNA expression during cell senescence.

Deep sequencing reveals novel microRNAs and regulation of microRNA expression during cell senescence.
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DOI:
10.1371/journal.pone.0020509
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Martin DI
Martin DI
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Dhahbi JM;Atamna H;Boffelli D;Magis W;Spindler SR;Martin DI

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在细胞衰老中,培养的细胞停止增殖并获得异常的基因表达模式。MicroRNAs (miRNAs)通过翻译抑制或mRNA降解调节基因表达,并与衰老有关。我们使用深度测序对miRNA表达和参与细胞衰老进行了全面调查。对来自年轻和衰老的人类成纤维细胞IMR90的小RNA序列数据集进行信息学分析,发现许多mirna与细胞衰老有关(向上或向下)。与mRNA表达谱的比较揭示了这些衰老调节的mirna的潜在mRNA靶点。靶mrna富含与细胞衰老相关的生物过程相关的基因。这一结果极大地扩展了关于miRNAs在细胞衰老中作用的现有信息,并与miRNAs在这一过程中具有因果作用的观点一致。
In cell senescence, cultured cells cease proliferating and acquire aberrant gene expression patterns. MicroRNAs (miRNAs) modulate gene expression through translational repression or mRNA degradation and have been implicated in senescence. We used deep sequencing to carry out a comprehensive survey of miRNA expression and involvement in cell senescence. Informatic analysis of small RNA sequence datasets from young and senescent IMR90 human fibroblasts identifies many miRNAs that are regulated (either up or down) with cell senescence. Comparison with mRNA expression profiles reveals potential mRNA targets of these senescence-regulated miRNAs. The target mRNAs are enriched for genes involved in biological processes associated with cell senescence. This result greatly extends existing information on the role of miRNAs in cell senescence and is consistent with miRNAs having a causal role in the process.
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