LINC00899 targets RBL2. a, binding sites between RBL2 3ʹUTR and LINC00899 sequence through the online prediction website; b, luciferase activity of the RBL2 Wt and RBL2 Mut after transfection; *, p < 0.05 vs. the NC group. Wt, wild type; Mut, mutant type; RBL2, retinoblastoma-like protein 2; NC, negative control.