(A and B) The detection of flow cytometry showed that the cells of BC reduced sharply as they were transfected by miR-27b-OE (*P<0.05). (C and D) The capacity of the cells of BC to migrate decreased with miR-27b-OE transfection (*P<0.05 vs. miR-NC). (D) The capacity of the cells of BC to migrate decreased with miR-27b-OE transfection (*P<0.05 vs. miR-NC). (E and F) The capacity of the cells of BC to invade decreased with miR-27b-OE transfection (*P<0.05 vs. miR-NC). (G) The analysis of CCK-8 demonstrated that miR-27b-OE transfection could inhibit the proliferation of BC cells 48 h later (*P<0.05 vs. miR-NC).