MIR31HG and hepatocellular carcinoma: Transwell assays showed that overexpression of MIR31HG combined with knockdown of miR-575 in HCC cells exhibit apparently decreased migrating and invading cells compared with overexpression of MIR31HG combined with overexpression of miR-575, whereas transfected with sh-MIR31HG + pre-miR-575 increased the migrating and invading cells (Fig. 6d and e).