Requirement of bic/microRNA-155 for normal immune function.

Requirement of bic/microRNA-155 for normal immune function.
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DOI:
10.1126/science.1139253
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发表时间:
2007-04-27
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Bradley A
Bradley A
中科院分区:
其他
文献类型:
--
作者:
Rodriguez A;Vigorito E;Clare S;Warren MV;Couttet P;Soond DR;van Dongen S;Grocock RJ;Das PP;Miska EA;Vetrie D;Okkenhaug K;Enright AJ;Dougan G;Turner M;Bradley A

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微小RNA(MicroRNAs)是一类小分子RNA,它们日益被视为基因表达的重要调节因子。尽管在哺乳动物基因组中存在数百种微小RNA,但针对其生理作用的遗传学研究仍处于早期阶段。我们已经表明,缺乏bic/微小RNA - 155的小鼠存在免疫缺陷,并显示出肺气道重塑增加。我们证明了bic/微小RNA - 155对B淋巴细胞、T淋巴细胞和树突状细胞的功能是必需的。对缺乏bic/微小RNA - 155的CD4 + T细胞进行的转录组分析确定了广泛的受微小RNA - 155调控的基因,包括细胞因子、趋化因子和转录因子。我们的研究表明,bic/微小RNA - 155在免疫系统的内稳态和功能中起着关键作用。
MicroRNAs are a class of small RNAs that are increasingly being recognized as important regulators of gene expression. Although hundreds of microRNAs are present in the mammalian genome, genetic studies addressing their physiological roles are at an early stage. We have shown that mice deficient for bic/microRNA-155 are immunodeficient and display increased lung airway remodeling. We demonstrate a requirement of bic/microRNA-155 for the function of B and T lymphocytes and dendritic cells. Transcriptome analysis of bic/microRNA-155–deficient CD4+ T cells identified a wide spectrum of microRNA-155–regulated genes, including cytokines, chemokines, and transcription factors. Our work suggests that bic/microRNA-155 plays a key role in the homeostasis and function of the immune system.
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