AZD1152-HQPA treatment leads to cell cycle arrest, accumulation of cells with ≥4 N DNA content, and apoptosis in HCC cells. (A) Hep3B cells were treated with vehicle or AZD1152-HQPA at 5, 25, and 125 nM for 24 to 48 hours, and then stained with propidium iodide. DNA contents were analyzed by flow cytometry. Data shown are representative of three independent experiments. (B) Percentage of sub-G1 DNA contents in Huh-7 and Hep3B cells treated with vehicle or AZD1152-HQPA at 5, 25, and 125 nM for 48 hours. Columns: means; bars: SD (n = 3). §, p < 0.05; *, p < 0.01 (compared to untreated controls).