Knockdown of
miR-299-5p inhibits the progression of hepatocellular carcinoma by targeting SIAH1.
Bull Cancer 2018;
105:873-883. [PMID:
30266288 DOI:
10.1016/j.bulcan.2018.07.013]
[Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/16/2018] [Accepted: 07/24/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND
Hepatocellular carcinoma (HCC) is one of the most common malignancies worldwide. MiR-299-5p has been demonstrated to play important roles in multiple human cancers. Nevertheless, little is known about the detailed function and molecular mechanism of miR-299-5p on HCC progression.
METHODS
Quantitative real-time PCR (qRT-PCR) assay was used to assess the expression patterns of miR-299-5p and siah E3 ubiquitin protein ligase 1 (SIAH1) in HCC tissues and cell lines. Loss-of-function experiments were performed to explore the effect of miR-299-5p on HCC progression in vitro and in vivo. Target predicted by software algorithms, the connection between miR-299-5p and SIAH1 was verified by dual-luciferase reporter assay, qRT-PCR and western blot analysis. Subsequently, anti-miR-299-5p and si-SIAH1 were cotransfected into LM9 and Huh-7 cells to further explore whether the regulatory effect of miR-299-5p on HCC was mediated by SIAH1.
RESULTS
qRT-PCR assay revealed that miR-299-5p was upregulated and SIAH1 was downregulated in HCC tissues and cell lines. Moreover, miR-299-5p knockdown suppressed HCC progression in vitro and in vivo. In addition, anti-miR-299-5p-mediated regulatory effect on HCC cells was abated following the restoration of SIAH1 expression.
CONCLUSIONS
MiR-299-5p knockdown suppressed the progression of HCC by targeting SIAH1, highlighting its role as a potential biomarker and therapeutic target of HCC.
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