title: Isolation of a new saponin and cytotoxic effect of saponins from the root of Platycodon grandiflorum on human tumor cell lines.
abstract: A novel triterpenoid saponin, deapioplatycoside E (1) was isolated from the root extract of Platycodon grandiflorum, together with the seven known saponins 2 - 8, i. e., platycoside E (2), deapioplatycodin D3 (3), platycodin D3 (4), polygalacin D2 (5), platycodin D2 (6), deapioplatycodin D (7) and platycodin D (8). The structure of the new saponin 1 was determined on the basis of spectral analysis and chemical evidence. The crude saponin fraction (ED50: ca. 10 - 15 microg/mL) and compounds 6 - 8 (ED50: ca. 4 - 18 microg/mL) exhibited significant inhibition on the proliferation of five kinds of cultured human tumor cell lines, i. e., A549 (non-small cell lung), SK-OV-3 (ovary), SK-MEL-2 (melanoma), XF498 (central nerve system) and HCT-15 (colon), in vitro.
authors.affiliation: Korea Research Institute of Chemical Technology, Taejeon, Korea.
authors.forename: Young Sup
authors.initials: YS
authors.lastname: Kim
authors.forename: Jeoung Seob
authors.initials: JS
authors.lastname: Kim
authors.forename: Sang-Un
authors.initials: SU
authors.lastname: Choi
authors.forename: Jung Sook
authors.initials: JS
authors.lastname: Kim
authors.forename: Hyun Sun
authors.initials: HS
authors.lastname: Lee
authors.forename: Seong Hwan
authors.initials: SH
authors.lastname: Roh
authors.forename: Young Chul
authors.initials: YC
authors.lastname: Jeong
authors.forename: Young-Kyoon
authors.initials: YK
authors.lastname: Kim
authors.forename: Shi Yong
authors.initials: SY
authors.lastname: Ryu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D045744:Cell Line, Tumor / Q000187:drug effects; D049109:Cell Proliferation / Q000187:drug effects; D006801:Humans; D020128:Inhibitory Concentration 50; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D018517:Plant Roots; D031238:Platycodon; D012503:Saponins / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D010936:Plant Extracts; D012503:Saponins