The FoxO pathway is activated and LINC00899 expression is elevated in spinal ependymoma tissues. a, LINC00899 expression and mRNA expression of RBL2, p21, p27, Bcl-2, Bax, Vimentin and Annexin detected by RT-qPCR; b, protein expression of RBL2, p21, p27, Bcl-2, Bax, Vimentin and Annexin detected by western blot analysis; c, the protein bands of RBL2, p21, p27, Bcl-2, Bax, Vimentin and Annexin; *, p < 0.05 vs. the normal group; RBL2, retinoblastoma-like protein 2; Bcl-2, B-Cell CLL/Lymphoma 2; Bax, BCL-2-associated X protein.