Pomolic acid and its glucopyranose ester promote apoptosis through autophagy in HT-29 colon cancer cells

Figure 2 Apoptosis of HT-29 cells after drug administration. A: HT-29 cells were stained with Hoechst 33342 and observed under an inverted fluorescence microscope (40 ×); B: HT-29 cells were stained with Hoechst 33342 and observed under an inverted fluorescence microscope (400 ×); C: Apoptosis of cells after treated with pomolic acid (PA) for 24 h; D: Apoptosis of cells after treated with PA for 48 h; E: Apoptosis of cells after treated with pomolic acid-28-O-β-D-glucopyranosyl ester for 48 h. ^bP < 0.01, ^dP < 0.0001.