Effect of long non-coding RNA ST3GAL6-AS1 on adhesion, migration and invasion ability of MM cells in vitro. After ST3GAL6-AS1 knockdown, the MM cell lines exhibited significant decrease in (A) cell adhesion, (B) migration and (C) invasion ability, compared with the control group. *P<0.05, **P<0.01, ***P<0.001 vs. respective control. si, small interfering; NC, negative control.