Yu Lei, Zhou Luting, Cheng Yu, Sun Lei, Fan Jian, Liang Jinlong, Guo Mujie, Liu Ning, Zhu Liying
Department of Infectious Disease, The Fourth Hospital of Harbin Medical University Harbin 150001, Heilongjiang, China.
Department of Pathology, General Hospital of Jinan Military Command Jinan 250000, Shandong, China.
Am J Cancer Res. 2014 Nov 19;4(6):897-906. eCollection 2014.
MicroRNAs (miRNAs) are small, non-coding RNAs that can act as oncogenes or tumor suppressor genes in human cancer. Increasing evidences indicate that deregulation of miRNAs contributes to the hepatocarcinogenesis. In this study, we demonstrated that the levels of miR-543 were dramatically increased in clinical hepatocellular carcinoma (HCC) tissues and cell lines. Moreover, forced expression of miR-543 promoted the proliferative and invasive potential of HepG2. We also identified PAQR3 as a direct target gene for miR-543 using a fluorescent reporter assay and western blot. The levels of PAQR3 were dramatically decreased in clinical hepatocellular carcinoma (HCC) tissues and cell lines. The mRNA levels of PAQR3 were inversely correlated with the miR-543 expression level.Thus, our finding provides a new insight into the mechanism of hepatocarcinogenesis, indicating a therapeutic potential of miR-543 in the treatment of HCC.
微小RNA(miRNA)是一类小的非编码RNA,在人类癌症中可作为癌基因或肿瘤抑制基因发挥作用。越来越多的证据表明,miRNA失调与肝癌发生有关。在本研究中,我们证明miR-543在临床肝细胞癌(HCC)组织和细胞系中的水平显著升高。此外,强制表达miR-543可促进HepG2的增殖和侵袭能力。我们还通过荧光报告基因检测和蛋白质印迹法确定PAQR3是miR-543的直接靶基因。PAQR3在临床肝细胞癌(HCC)组织和细胞系中的水平显著降低。PAQR3的mRNA水平与miR-543表达水平呈负相关。因此,我们的发现为肝癌发生机制提供了新的见解,表明miR-543在HCC治疗中具有治疗潜力。