Anti-tumor activity of oxypeucedanin from Ostericum koreanum against human prostate carcinoma DU145 cells

Abstract

Purpose. Oxypeucedanin has been reported to have various biological activities. We investigated the efficacy of a coumarin compound, oxypeucedanin, from Ostericum koreanum against the human prostate carcinoma cell line DU145. Material and methods. Oxypeucedanin (C₁₆H₁₄O₅, mw: 286) was isolated through silica gel chromatography and characterized by NMR. The cells were treated with oxypeucedanin (25, 50, and 100 µM) for 24–72 hours, and cell growth and death were then assayed. The cell cycle progression and apoptotic effects were also assessed by western blotting. Results. Treatment with oxypeucedanin inhibited cell growth and induced cell death in DU145 cells. Furthermore, oxypeucedanin-induced cell growth inhibition was associated with an increase in G2-M arrest in cell cycle progression in DU145 cells in a dose and time-dependent manner. G2-M arrest by oxypeucedanin was associated with decreased levels of cyclin A, cyclin B1, Cdc2, and pCdc2. Oxypeucedanin-induced cell death was associated with significant increases in apoptosis and cleaved caspase-3 and poly-(ADP-ribose) polymerase. Conclusion. These finding suggest a novel anticancer effect for oxypeucedanin, mediated via induction of G2-M cell cycle arrest and apoptosis in human prostate carcinoma DU145 cells.