title: Anti-tumor activity of oxypeucedanin from Ostericum koreanum against human prostate carcinoma DU145 cells.
abstract: OBJECTIVE
  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.
  
  
  METHODS
  Oxypeucedanin (C(16)H(14)O(5), mw: 286) was isolated through silica gel chromatography and characterized by NMR. The cells were treated with oxypeucedanin (25, 50, and 100 microM) 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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Pharmacy, College of Pharmacy, Sahmyook University, Seoul, Korea.
authors.forename: Tae Jin
authors.initials: TJ
authors.lastname: Kang
authors.forename: Sook Yeon
authors.initials: SY
authors.lastname: Lee
authors.forename: Rana P
authors.initials: RP
authors.lastname: Singh
authors.forename: Rajesh
authors.initials: R
authors.lastname: Agarwal
authors.forename: Dong Sool
authors.initials: DS
authors.lastname: Yim