Upregulation of miR-520c-3p via hepatitis B virus drives hepatocellular migration and invasion by the PTEN/AKT/NF-κB axis.

Upregulation of miR-520c-3p via hepatitis B virus drives hepatocellular migration and invasion by the PTEN/AKT/NF-κB axis.
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HBV 对 miR-520c-3p 的上调通过 PTEN-AKT 途径激活 NF-κB 信号传导增强肿瘤细胞迁移和侵袭

DOI:
10.1016/j.omtn.2022.05.031
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发表时间:
2022-09-13
期刊:
MOLECULAR THERAPY NUCLEIC ACIDS
影响因子:
--
通讯作者:
Sun, Guihong
Sun, Guihong
中科院分区:
其他
文献类型:
--
作者:
Liu, Yang;Wang, Jingwen;Chen, Jianwen;Wu, Shaoshuai;Zeng, Xianhuang;Xiong, Qiushuang;Guo, Yandan;Sun, Junwei;Song, Feifei;Xu, Jiaqi;Yuan, Sen;Li, Chuang;He, Yuan;Wang, Ming;Chen, Lang;Shi, Yun-Bo;Guo, Mingxiong;Guo, Deyin;Sun, Guihong

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乙型肝炎病毒(HBV)是肝细胞癌(HCC)发生和发展的主要危险因素。有报道称,病毒感染可干扰细胞microRNA (miRNA)的表达,从而影响肿瘤的发生。在本研究中,我们发现miR-520c-3p在肝脏肿瘤标本中上调,我们发现HBV感染通过病毒蛋白HBV X蛋白(HBx)与转录因子CREB1的相互作用增强了miR-520c-3p的表达。我们进一步表明,HBV转染/感染诱导的miR-520c-3p可引起上皮-间质转化(EMT)。通过miRNA靶标预测数据库miRBase和荧光素酶报告基因检测,我们发现PTEN是miR-520c-3p的一个新的靶基因,miR-520c-3p直接靶向PTEN的3 ' -非翻译区。此外,我们发现HBV通过miR-520c-3p-PTEN促进EMT激活AKT-NFκB信号通路,导致HCC迁移和侵袭增加。重要的是,miR-520c-3p antagomir显著抑制hbx诱导的肝细胞异种移植模型的侵袭性。我们的研究结果表明,miR-520c-3p是一种新的HBV调节剂,在HCC进展中起重要作用。它可能成为HBV患者新的生物标志物和分子治疗靶点。
Hepatitis B virus (HBV) is a major risk factor for the development and progression of hepatocellular carcinoma (HCC). It has been reported that viral infection can interfere with the expression of cellular microRNA (miRNA) to affect oncogenesis. In this study, we showed that miR-520c-3p was upregulated in liver tumor specimens, and we revealed that HBV infection enhanced the expression of miR-520c-3p through the interaction of viral protein HBV X protein (HBx) with transcription factor CREB1. We further showed that miR-520c-3p induced by HBV transfection/infection caused epithelial-mesenchymal transition (EMT). Using the miRNA target prediction database miRBase and luciferase reporter assays, we identified PTEN as a novel target gene of miR-520c-3p and miR-520c-3p directly targeted PTEN’s 3′-untranslated region. Moreover, we discovered that HBV promoted EMT via the miR-520c-3p-PTEN to activate AKT-NFκB signaling pathway, leading to increased HCC migration and invasion. Importantly, miR-520c-3p antagomir significantly represses invasiveness in HBx-induced hepatocellular xenograft models. Our findings indicate that miR-520c-3p is a novel regulator of HBV and plays an important role in HCC progression. It may serve as a new biomarker and molecular therapeutic target for HBV patients.
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