Effects of SQE, p-coumaric acid, and tricin on cell differentiation in colon CSCs. CD133+CD44+ HT29 cells (A) and CD133+CD44+ HCT116 cells (B) were treated with SQE (0, 100, 200, or 300 μg/mL), or p-coumaric acid (1.8 μM) and tricin (0.7 μM) at concentrations equivalent to that contained in 300 μg/mL SQE. Levels of protein expressions for Cytokeratin 20 (CK20) were examined by Western blot analysis, and detection of α-tubulin was used as a loading control. The letter labels on the histogram indicate the values that significantly differed from each other (p < 0.05) according to one-way ANOVA for multiple comparisons. Ctrl, Control; SQE, Sasa quelpaertensis extract; P.C, p-coumaric acid; T, tricin.