CircRNA circBACH1 (hsa_circ_0061395) serves as a miR-656-3p sponge to facilitate hepatocellular carcinoma progression
GuoYong Li1, Peng Du1, JianPeng He1
1Department of Hepatobiliary Surgery, The First Affiliated Hospital of Nanchang University, NanChang, JiangXi, 330006, China.
Abstract:
Hsa_circ_0061395(circBACH1) and SERBP1(SERPINE1 mRNA binding protein 1) have been reported to play a carcinogenic role in HCC.In this study, circBACH1, microRNA(miR)-656-3p, and SERBP1 expression levels with quantitative real-time polymerase chain reaction (qRT-PCR) in HCC tissue specimens and cells.The protein levels of SERBP1, E-Cadherin, vimentin, and N-Cadherin were detected with western blotting.Cell proliferation, migration, invasion, and apoptosis were determined with CCK-8, colony formation, transwell, and flow cytometry assays.The targeting relatio-nship between circBACH1 or SERBP1 and miR-656-3p was verified by dual-lucifer- ase reporter assay.The role of circBACH1 was validated by xenograft assay.CircBAC- H1 and SERBP1 were upregulated in HCC tissues and cells.Both circBACH1 and SERBP1 knockdown constrained proliferation, migration, invasion, and EMT(epithel-ial-mesenchymal transition), and facilitated apoptosis of HCC cells in vitro.Knockdo-wn of circBACH1 reduced HCC growth in vivo. SERBP1 overexpression partially neutralized the repressive effect of circBACH1 silencing on malignant behaviors of HCC cells.CircBACH1 sponged miR-656-3p to elevate SERBP1 expression, thereby accelerating the progression of HCC.The research provided a new evidence to support the role of circBACH1 in HCC.
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