MiR-199a/b-5p inhibits hepatocellular carcinoma progression by post-transcriptionally suppressing ROCK1.

MiR-199a/b-5p inhibits hepatocellular carcinoma progression by post-transcriptionally suppressing ROCK1.
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MiR-199a/b-5p 通过转录后抑制 ROCK1 抑​​制肝细胞癌进展

DOI:
10.18632/oncotarget.18052
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发表时间:
2017-09-15
期刊:
影响因子:
--
通讯作者:
Wang Q
Wang Q
中科院分区:
其他
文献类型:
--
作者:
Zhan Y;Zheng N;Teng F;Bao L;Liu F;Zhang M;Guo M;Guo W;Ding G;Wang Q

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在这项研究中,我们探讨了miR-199a/b-5p在肝细胞癌(HCC)进展过程中的作用及其潜在的靶基因。通过对TCGA数据库的15个匹配的HCC肿瘤和相邻的非肿瘤肝组织的热图miRNA表达分析,我们检测到了19个上调的19个mRNA,其中13个在HCC中被专门下调。其中,与对照组相比,在HCC肿瘤和细胞系中,MiR-199家庭成员在HCC肿瘤和细胞系中被下调。低miR-199a/b-5p表达也与HCC患者的总体存活率差有关。 HCC细胞系中的miR-199a/b-5p过表达抑制了体外和体内的细胞增殖,迁移和侵袭。此外,MIR199-A/B-5P转录后抑制了Rho相关的卷曲圈激酶1(Rock1)。反过来,这导致了ROCK1/MLC和PI3K/AKT信号的抑制,这对于HCC增殖和转移是必不可少的。这些结果表明,miR-199a/b在HCC中充当肿瘤抑制剂,代表有希望的治疗靶标。
In this study, we explored the actions of miR-199a/b-5p during hepatocellular carcinoma (HCC) progression and its potential target genes. Through heatmap miRNA expression analysis of 15 matched HCC tumor and adjacent non-tumor liver tissues from the TCGA database, we detected 19 mRNAs that were upregulated and 13 that were downregulated specifically in HCC. Among these, miR-199 family members were downregulated in HCC tumors and cell lines, as compared to controls. Low miR-199a/b-5p expression was also associated with poor overall survival of HCC patients. miR-199a/b-5p overexpression in HCC cell lines inhibited cell proliferation, migration and invasion, both in vitro and in vivo. In addition, miR199-a/b-5p post-transcriptionally suppressed Rho-associated coiled-coil kinase 1 (ROCK1). This in turn led to inhibition of ROCK1/MLC and PI3K/Akt signaling, which is necessary for HCC proliferation and metastasis. These results indicate that miR-199a/b acts as tumor suppressors in HCC and represent promising therapeutic targets.
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