Downregulation of microRNA-31 inhibits proliferation and induces apoptosis by targeting HIF1AN in human keloid.

Downregulation of microRNA-31 inhibits proliferation and induces apoptosis by targeting HIF1AN in human keloid.
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下调 microRNA-31 通过靶向 HIF1AN 抑制人瘢痕疙瘩增殖并诱导细胞凋亡

DOI:
10.18632/oncotarget.20284
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发表时间:
2017-09-26
期刊:
影响因子:
--
通讯作者:
He L
He L
中科院分区:
其他
文献类型:
--
作者:
Zhang J;Xu D;Li N;Li Y;He Y;Hu X;Lyu L;He L

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microRNAs(miRNAs)在瘢痕疙瘩瘢痕形成中细胞增殖和凋亡的调控中起着关键作用。对先前的miRNA芯片的综合分析显示,miRNA-31是瘢痕疙瘩和增生性瘢痕中最常见的改变的miRNA之一。使用qRT-PCR,我们进一步验证了miRNA-31在瘢痕疙瘩组织和瘢痕疙瘩来源的成纤维细胞中增加。此外,下调miRNA-31可抑制细胞增殖,诱导细胞凋亡,并通过靶向HIF 1AN(缺氧诱导因子1的负调控因子)干扰细胞周期进程。通过荧光素酶报告基因分析,证实HIF 1AN是miRNA-31的靶点。进一步研究表明,miRNA-31通过介导HIF 1AN/VEGF信号通路调控瘢痕疙瘩成纤维细胞的增殖、凋亡和细胞周期。总的来说,我们的发现揭示了miRNA-31作为瘢痕疙瘩瘢痕形成的有希望的治疗靶点的新观点。
microRNAs (miRNAs) play a pivotal role in the regulation of cell proliferation and apoptosis in keloid scarring. Integrative analysis of the previous miRNA microarray revealed miRNA-31 was among the most frequently altered miRNAs in keloid and hypertrophic scar. Using qRT-PCR, we further validated miRNA-31 was increased in keloid tissues and keloid-derived fibroblasts. Moreover, downregulation of miRNA-31 inhibited the cell proliferation, induced the cell apoptosis and disturbed the cell cycle progression by targeting HIF1AN, a negative modulator of hypoxia inducible factor 1. Through the luciferase reporter assay, HIF1AN was confirmed to be a target of miRNA-31. Further studies demonstrated that miRNA-31 regulated proliferation, apoptosis and cell cycle of keloid-derived fibroblasts by mediating HIF1AN/VEGF signaling pathway. Overall, our findings shed new light on miRNA-31 as a promising therapeutic target in keloid scarring.
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