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Cancer Biomark. 2018;22(3):427-434. doi: 10.3233/CBM-171036.

MicroRNA-493 suppresses cell proliferation and invasion by targeting ZFX in human hepatocellular carcinoma.

Ding W1,2,1, Tan H3,1, Li X1, Zhang Y1, Fang F2, Tian Y1, Li J1, Pan X4.

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Department of Clinical Laboratory, Kunming General Hospital, Chinese People's Liberation Army, Kunming 650032, Yunnan, China.
College of Medicine, Yunnan Economic Management College, Kunming 650106, Yunnan, China.
Department of Orthopedics, Kunming General Hospital of Chinese People's Liberation Army, Kunming 650032, Yunnan, China.
Stem Cell Engineering Laboratory of Yunnan Province, Kunming General Hospital, Chinese People's Liberation Army, Kunming 650032, Yunnan, China.



MicroRNAs (miRNAs) are some RNA molecules that negatively regulate gene expression by binding to the 3'-untranslated region (3'-UTR) of target mRNA molecules. The aim of the study is to investigate the clinical role and functional effects of microRNA-493 (miR-493) in human hepatocellular carcinoma (HCC).


Expression of miR-493 in 58 cases of HCC tissues and adjacent normal tissues was determined by using quantitative real-time PCR (qRT-PCR) analyses. In vitro, cell proliferation and invasion capacity was evaluated by CCK8 assay and trans-well invasion assay. Luciferase reporter assay, western blot and qRT-PCR were used to detect the association between miR-493 expression and zinc finger protein X-linked (ZFX) in HCC.


Expression of miR-493 was significantly downregulated in HCC tissues compared to adjacent normal tissues. Lower miR-493 expression associated with tumor size, vascular invasion and poor overall survival (OS) and disease free survival (DFS) time of HCC patients. In vitro, transfection of miR-493 mimic in HCC cells inhibited cell proliferation and invasion abilities. However, transfection of miR-493 inhibitor in HCC cells had promoting effects. Luciferase reporter assay, qRT-PCR and western blot analysis demonstrated that miR-493 targeting 3'-untranslated region (3'-UTR) of ZFX and overexpression of miR-493 inhibited its expression. Moreover, enforced ZFX expression rescued the effects of miR-493 mimic on cell proliferation and invasion.


MiR-493 functioned as tumor suppressor in HCC cells by regulating ZFX expression. Thus, miR-493 may provide potential value for HCC treatment.


MicroRNAs; ZFX; cell invasion; cell proliferation; miR-493

[Indexed for MEDLINE]

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