MicroRNA-191 promotes hepatocellular carcinoma cell proliferation by has_circ_0000204/miR-191/KLF6 axis.

Abstract:

OBJECTIVES:MicroRNAs are powerful regulators in hepatocellular carcinoma (HCC) tumorigenesis. MicoRNA-191 (miR-191) has been reported to play an important role in HCC, However, the regulatory mechanism is still unclear. In this study, we investigated the role of miR-191 in HCC and studied its underlying mechanisms of action. MATERIALS AND METHODS:The expression of miR-191 in HCC tissues was determined by quantitative real-time PCR (qRT-PCR). The role of miR-191 in HCC cells was examined by using both in vitro and in vivo assays. Downstream targets of miR-191 were determined by qRT-PCR and Western blot analysis. Dual-luciferase assays were performed to validate the interaction between miR-191 and its targets. RESULTS:The expression of miR-191 was significantly higher in HCC patients and a higher miR-191 expression predicted poorer prognosis. Analysis of The Cancer Genome Atlas data sets suggested that miR-191 positively correlated with cell cycle progression. Gain and loss of function assays showed that miR-191 promoted cell cycle progression and proliferation. Luciferase reporter assay showed that miR-191 directly targeted the 3'-untranslated region of KLF6 mRNA. Furthermore, circular RNA has_circ_0000204 could sponge with miR-191, resulting in inactivation of miR-191. CONCLUSIONS:Our study sheds light on the novel underlying mechanism of miR-191 in HCC, which may accelerate the development of cancer therapy.

journal_name

Cell Prolif

journal_title

Cell proliferation

authors

Tian F,Yu C,Wu M,Wu X,Wan L,Zhu X

doi

10.1111/cpr.12635

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

e12635

issue

5

eissn

0960-7722

issn

1365-2184

journal_volume

52

pub_type

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