title: Activity of crude extract of Rubus crataegifolius roots as a potent apoptosis inducer and DNA topoisomerase I inhibitor.
abstract: The effects of methanol extract of Rubus crategifolius roots and its solvent fractions were investigated on the proliferation of MCF-7 human breast carcinoma cells. The methanol extract inhibited the proliferation of MCF-7 cells in a concentration dependent manner. Moreover, their methanol soluble (W-M) fraction had the greatest inhibitory effect on the growth of MCF-7 cells. To evaluate whether the W-M fraction affects on the cell cycle of MCF-7 cells, cells treated with this fraction were analyzed with flow cytometry. The W-M fraction increased G0/G1 phase after 24 h-treatment and induced apoptosis after 48 h-treatment. The hallmark of apoptosis, DNA fragmentation, also appeared by W-M fraction after 48 h-treatment. Furthermore, the methanol extract and its W-M fraction inhibited the activity of the topoisomerase I enzyme in the relaxation assay. From these results, their W-M fraction as well as methanol extract of R. crategifolius roots are necessary for further studies as a potent inhibitor of the growth of cancer cells.
authors.affiliation: College of Pharmacy, Pusan National University, Korea.
authors.forename: J H
authors.initials: JH
authors.lastname: Lee
authors.forename: Y A
authors.initials: YA
authors.lastname: Ham
authors.forename: S H
authors.initials: SH
authors.lastname: Choi
authors.forename: E O
authors.initials: EO
authors.lastname: Im
authors.forename: J H
authors.initials: JH
authors.lastname: Jung
authors.forename: K S
authors.initials: KS
authors.lastname: Im
authors.forename: D K
authors.initials: DK
authors.lastname: Kim
authors.forename: Y
authors.initials: Y
authors.lastname: Xu
authors.forename: M W
authors.initials: MW
authors.lastname: Wang
authors.forename: N D
authors.initials: ND
authors.lastname: Kim
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D002166:Camptothecin / Q000031:analogs & derivatives / Q000494:pharmacology; D002453:Cell Cycle / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D053938:DNA Fragmentation / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000494:pharmacology*; D006801:Humans; D000077146:Irinotecan; D010936:Plant Extracts / Q000494:pharmacology; D010946:Plants, Medicinal; D059004:Topoisomerase I Inhibitors; D014407:Tumor Cells, Cultured
chemical_list: D004791:Enzyme Inhibitors; D010936:Plant Extracts; D059004:Topoisomerase I Inhibitors; D000077146:Irinotecan; D002166:Camptothecin