Effect of pachymic acid on the growth and cell cycle of SGC-7901 gastric cancer cells. (A) SGC-7901 cells were treated with different concentrations of PA (20, 40 and 80 µM) for 12, 24, 48 and 72 h, and CCK-8 assay was performed to examine cell viability. (B) SGC-7901 cells were treated with different concentrations of PA (20, 40 and 80 µM) for 24 h, and cell population in G0/G1 and S phase was assessed by flow cytometric analysis. (C) Representative cell cycle profiles of SGC-7901 cells after PA treatment. *P<0.05, **P<0.01, #P<0.001 vs. the control group.