title: Costunolide, a sesquiterpene from the stem bark of Magnolia sieboldii, inhibits the RAS-farnesyl-proteintransferase.
abstract: Costunolide, a germacrane sesquiterpene lactone isolated from the stem bark of Magnolia sieboldii demonstrated a significant inhibition upon the farnesylation process of human lamin-B by farnesyl-proteintransferase (FPTase), in a dose dependent manner in vitro (IC50 value was calculated as 20 microM). It was also found to exhibit an inhibition upon the proliferation of cultured human tumor cells, 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.forename: S H
authors.initials: SH
authors.lastname: Park
authors.forename: S U
authors.initials: SU
authors.lastname: Choi
authors.forename: C O
authors.initials: CO
authors.lastname: Lee
authors.forename: S E
authors.initials: SE
authors.lastname: Yoo
authors.forename: S K
authors.initials: SK
authors.lastname: Yoon
authors.forename: Y K
authors.initials: YK
authors.lastname: Kim
authors.forename: S Y
authors.initials: SY
authors.lastname: Ryu
mesh_terms: D019883:Alkyl and Aryl Transferases / Q000037:antagonists & inhibitors*; D000595:Amino Acid Sequence; D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D001921:Brain / Q000201:enzymology; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D004791:Enzyme Inhibitors / Q000494:pharmacology*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018520:Plant Shoots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D051381:Rats; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D014407:Tumor Cells, Cultured / Q000187:drug effects*; D007783:Lactones
chemical_list: D019883:Alkyl and Aryl Transferases; D000972:Antineoplastic Agents, Phytogenic; D004365:Drugs, Chinese Herbal; D004791:Enzyme Inhibitors; D012717:Sesquiterpenes; C002602:costunolide; D007783:Lactones; C064911:p21(ras) farnesyl-protein transferase