MicroRNA-153 promotes Wnt/β-catenin activation in hepatocellular carcinoma through suppression of WWOX.

MicroRNA-153 promotes Wnt/β-catenin activation in hepatocellular carcinoma through suppression of WWOX.
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DOI:
10.18632/oncotarget.2927
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发表时间:
2015-02-28
期刊:
影响因子:
--
通讯作者:
Ding G
Ding G
中科院分区:
其他
文献类型:
--
作者:
Hua HW;Jiang F;Huang Q;Liao Z;Ding G

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Wnt/β-catenin信号的持续激活在人类癌症(包括肝细胞癌(HCC))的发展中起着至关重要的作用。在这里,我们进行了基于MicroRNA的遗传筛选,揭示了由MicroRNA-153(miR-153)触发的β-catenin信号转导的新转向。miR-153的过表达能够促进β-catenin的转录活性,从而导致HCC细胞的细胞周期进展、增殖和集落形成。此外,全身施用miR-153 antigomir抑制了鼠肝癌模型中的肝细胞癌发生。在分子水平上,我们发现miR-153通过靶向其3′-非翻译区抑制肿瘤抑制因子和β-catenin信号通路抑制因子WWOX的蛋白水平。因此,我们的研究强调了MicroRNA-153/WWOX/β-catenin调节轴在HCC肿瘤发生中的重要性。
Persistent activation of Wnt/β-catenin signaling plays crucial roles in the development of human cancers, including hepatocellular carcinoma (HCC). Here, we performed a MicroRNA-based genetic screen, which revealed a novel diversion in β-catenin signaling triggered by MicroRNA-153 (miR-153). Overexpression of miR-153 was able to promote β-catenin transcriptional activity, leading to cell-cycle progression, proliferation and colony formation of HCC cells. Additionally, systemic administration of miR-153 antigomir suppressed hepatocellular carcinogenesis in a murine liver cancer model. At the molecular level, we found that miR-153 inhibited protein level of WWOX, a tumor suppressor and inhibitor of β-catenin signaling, through targeting its 3′-untranslated region. Therefore, our study highlights the importance of MicroRNA-153/WWOX/β-catenin regulatory axis in the HCC tumorigenesis.
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