Fig. 3

miR-124 suppresses cells proliferation and downregulates the expression of CDK6 in SKM-1 cell line. a Methylation status of miR-124 inSKM-1 cells before and after 4 μM DAC treatment for 48 h. b SKM-1 cells were treated with 2 and 4 μM DAC for 48 h, and miR-124 expression was determined by real-time PCR and normalized to U6. The results are presented as the means ± s.d. of values obtained in three independent experiments. Statistical significance was calculated using the Student’s t test. * P < 0.05. c The effect of miR-124 on cell proliferation was measured by CCK-8 assay. Increased expression of miR-124 after DAC treatment inhibited cells proliferation. d The effect of miR-124 overexpression on cell proliferation. miR-124 means SKM-1 cells transfected with miR-124 mimics, and NC means negative control of SKM-1 cells transfected with miR-124 mimics. e The effect of miR-124 suppression on cell proliferation. Anti-miR-124 means the cells transfected with miR-124 inhibitors, and anti-NC means the negative control of cells transfected with miR-124 inhibitors. f Western blot and a quantitative analysis of bands intensity of CDK6 in SKM-1 cells treated with 2 and 4 μM DAC for 48 h. GAPDH served as the internal control. g The effect of miR-124 overexpression on endogenous CDK6 expression was measured by western blot and a quantitative analysis of band intensity. GAPDH served as an internal control. miR-124 means SKM-1 cells transfected with miR-124 mimics, and NC means negative control of SKM-1 cells transfected with miR-124 mimics. h The effect of miR-124 suppression on endogenous CDK6 expression was measured by western blot and a quantitative analysis of band intensity. GAPDH served as an internal control. Anti-miR-124 means the cells transfected with miR-124 inhibitors, and anti-NC means the negative control of cells transfected with miR-124 inhibitors