Overexpression of miR-370 promotes apoptosis in colon cancer cells in vitro. (A) qPCR analysis of miR-370 expression in HCoEpiCs and several colon cancer cells, n=3; **P<0.01, compared with HCoEpiCs. GAPDH was used as the internal control. (B) qPCR analysis of miR-370 expression in miR-NC and miR-370 transfected LoVo and SW620 cells, n=3; **P<0.01, compared with miR-NC transfected cells. GAPDH was used as the internal control. (C) Analysis of cell viability by CCK-8 in miR-NC and miR-370 transfected LoVo and SW620 cells, n=3; *P<0.05; **P<0.01, compared with miR-NC transfected cells. (D) Analysis of cell apoptosis by Annexin V and PI in miR-NC and miR-370 transfected LoVo and SW620 cells, n=3; **P<0.01, compared with miR-NC transfected cells. miR, microRNA; qPCR, quantitative real-time polymerase chain reaction; CCK-8, Cell Counting kit-8.