Figure 8. Flow cytometry analysis of PI staining shows that SUMO2 gene silencing promotes cell cycle entry of NPCs.

Notes: (A) Cell cycle entry of NPCs in the sham, model, NC, and shRNA groups. (B) Percentage chart of cell cycle of NPCs in the sham, model, NC, and shRNA groups; *P<0.05, compared with the sham group; ^#P<0.05, compared with the model and NC groups; NC, negative control; NPC, nucleus pulposus cell; PI, propidium iodide.