Figure 4.
Bmi1 knockdown inhibits the migration and invasion ability of cancer stem-like cells (SP cells) in TSCC. (A) The expression of Bmi1, SOD2, Slug, and stem cell markers (ABCG2, Nanog) was inhibited in SP cells transfected with Bmi1 siRNA. (B, C) The migration (B) and invasion (C) abilities were significantly inhibited in Bmi1 siRNA-transfected SP cells compared to control siRNA-transfected SP cells. (D-F) The SP cells transfected with Bmi1 siRNA had significantly decreased sphere formation (D, P=0.0005), colony formation (E, P=0.0002), and proliferation (F, P=0.001) compared to control siRNA-transfected SP cells. *P < 0.05.