Abstract
To investigate the regulatory effect of miR-328 on biological behaviors of hepatocellular carcinoma (HCC) cells, such as invasion and proliferation. The expressions of miR-328 were detected in 48 pairs of HCC tissue samples and matched adjacent tissues, as well as in 3 kinds of HCC cell lines via quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Further, we analyzed the effects of miR-328 inhibition on cell invasion, proliferation, cell apoptosis, and cell cycle. Dual-luciferase activity assay was performed to examine the potential target gene PTEN which was predicted by an online database. Protein levels were detected using Western blot assay. The expression of miR-328 was significantly increased in HCC tissue samples. Decreased miR-328 in HCC cells significantly attenuated cell invasion and proliferation capacities, promoted cell apoptosis and induced cell cycle arrest at G0/G1 phase. Moreover, PTEN was verified as a target gene of miR-328 by dual-luciferase activity assay, qRT-PCR and Western blot. Furthermore, the silence of PTEN neutralized the suppressive effect of decreased miR-328 on cell growth and metastasis. MiR-328 is involved in the development of HCC via regulating PTEN, which might provide a new target for HCC diagnosis and therapy.
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