A novel hypoxia-induced miR-147a regulates cell proliferation through a positive feedback loop of stabilizing HIF-1α.
A novel hypoxia-induced miR-147a regulates cell proliferation through a positive feedback loop of stabilizing HIF-1α.
复制标题
一种新型缺氧诱导的 miR-147a 通过稳定 HIF-1 的正反馈环调节细胞增殖
DOI:
10.1080/15384047.2016.1195040
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发表时间:
2016-08-02
影响因子:
3.6
通讯作者:
Zhang Y
中科院分区:
文献类型:
--
作者:
Wang F;Zhang H;Xu N;Huang N;Tian C;Ye A;Hu G;He J;Zhang Y
Hypoxia is a general event in solid tumor growth. Therefore, induced cellular responses by hypoxia are important for tumorigenesis and tumor growth. MicroRNAs (miRNAs) have recently emerged as important regulators of hypoxia induced cellular responses. Here we report that miR-147a is a novel and crucial hypoxia induced miRNA. HIF-1α up-regulates the expression of miR-147a, and miR-147a in turn stabilizes and accumulates HIF-1α protein via directly targeting HIF-3α, a dominant negative regulator of HIF-1α. Subsequent studies in xenograft mouse model reveal that miR-147a is capable of inhibiting tumor growth. Collectively, these data demonstrate a positive feedback loop between HIF-1α, miR-147a and HIF-3α, which provide a new insight into the mechanism of miR-147a induced cell proliferation arrest under hypoxia.
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