Figure 3

Cell growth inhibition and cell cycle redistribution analyses of stably transfected A549 cells. a. Cell growth curve analysis in one representative experiment. Data shown are the mean ± standard deviation of triplicate wells. b. Comparison of cell growth inhibition effects of p16INK4a, p14ARF and p12 on the final day of cell counting, based on three independent experiments. It was shown that all three transcripts significantly suppressed cell growth compared with the empty vector, but p16INK4a had the strongest effect. Error bars represent the standard deviation.* p < 0.05, ** p < 0.01. c. The percentage of stable clone cells at each stage of the cell cycle 48 h after subculture. p16INK4a and p14ARF induced clear G0/G1-phase accumulation and a decrease in the number of cells in S phase. p12 did not have a significant effect on the A549 cell cycle. Data shown are the mean ± standard deviation of three independent experiments. * p < 0.05.