Target sites of miR-122/499a prediction and luciferase assay. A, miR-122 and miR-449a target genes prediction results; B, the target relationship between miR-122 and DUSP4/PDK4, miR-449a and FKBP1B detected by dual-luciferase reporter system. NC, blank vector; WT, wild-type vector; mut, mutant vector (**p<0.01).