Figure 1. Effects of 5-azaC on the survival of NPC cells in vitro.

As the drug concentration increased, the growth inhibition ratio for CNE2 and SUNE1 cells increased. After treatment with 3000 or 5000-azaC for 72 h, the survival rate was significantly reduced compared to the cells in the PBS control group (Student’s t-test ,*P<0.05; **P<0.01).