JMJD3 regulates the expression levels of CXCL12. (A) mRNA expression levels of CXCL12 and its receptor CXCR4 in U-251MG (left panel) and U-87MG ATCC (right panel) cells in which JMJD3 was overexpressed or depleted. (B) Western blotting results revealing CXCL12, CXCR4 and H3K27me3 protein expression in U-251MG (left panel) and U-87MG ATCC (right panel) cells in which JMJD3 was overexpressed or depleted. (C) Relative protein expression of CXCL12, CXCR4 and H3K27me3 was determined in U-251MG (left panel) and U-87MG ATCC (right panel) cells. β-actin was used as an endogenous control. **P<0.01. ATCC, American Type Culture Collection; CXCL12, C-X-C motif chemokine ligand 12; CXCR4, C-X-C motif chemokine receptor 4; H3K27me3, histone H3 lysine 27 trimethyl; JMJD3, Jumonji domain-containing protein 3; shRNA, short hairpin RNA.