MiR-221 negatively regulates innate anti-viral response.
MiR-221 negatively regulates innate anti-viral response.
复制标题
MiR-221 负向调节先天抗病毒反应
DOI:
10.1371/journal.pone.0200385
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发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
You F
中科院分区:
文献类型:
--
作者:
Du H;Cui S;Li Y;Yang G;Wang P;Fikrig E;You F
The innate immune system plays a critical role in the initial antiviral response. However, the timing and duration of these responses must be tightly regulated during infection to ensure appropriate immune cell activation and anti-viral defenses. Here we demonstrate that during antiviral response, a negative regulator miR-221 was also induced in an ELF4-dependent manner. We further show that ELF4 promotes miR-221 expression through direct binding to its promoter. Overexpression and knockdown assay show that miR-221 can negatively regulate IFNβ production in time of virus infection. RNA-seq analysis of miR-221 overexpressed cells revealed multiple candidate targets. Taken together, our study identified a novel negative microRNA regulator of innate antiviral response, which is dependent on ELF4.
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