title: Geranylgeranylacetone inhibits ovarian cancer progression in vitro and in vivo.
abstract: Geranylgeranylacetone (GGA), an isoprenoid compound, is an anti-ulcer drug developed in Japan. In our previous study, GGA was shown to inhibit ovarian cancer invasion by attenuating Rho activation [K. Hashimoto, K. Morishige, K. Sawada, M. Tahara, S. Shimizu, M. Sakata, K. Tasaka, Y. Murata, Geranylgeranylacetone inhibits lysophosphatidic acid-induced invasion of human ovarian carcinoma cells in vitro. Cancer 103 (2005) 1529-1536.]. In the present study, GGA treatment inhibited ovarian cancer progression in vitro and suppressed the tumor growth and ascites in the in vivo ovarian cancer model. In vitro analysis, treatment of cancer cells by GGA resulted in the inhibition of cancer cell proliferation, the inactivation of Ras, and the suppression of tyrosine phosphorylation of mitogen-activated protein kinase (MAPK). In conclusion, this is the first report that GGA inhibited ovarian cancer progression and the anti-tumor effect by GGA is, at least in part, derived not only from the suppression of Rho activation but also Ras-MAPK activation.
authors.affiliation: Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, Japan.
authors.forename: Kae
authors.initials: K
authors.lastname: Hashimoto
authors.forename: Ken-ichirou
authors.initials: K
authors.lastname: Morishige
authors.forename: Kenjiro
authors.initials: K
authors.lastname: Sawada
authors.forename: Seiji
authors.initials: S
authors.lastname: Ogata
authors.forename: Masahiro
authors.initials: M
authors.lastname: Tahara
authors.forename: Shoko
authors.initials: S
authors.lastname: Shimizu
authors.forename: Masahiro
authors.initials: M
authors.lastname: Sakata
authors.forename: Keiichi
authors.initials: K
authors.lastname: Tasaka
authors.forename: Tadashi
authors.initials: T
authors.lastname: Kimura
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology*; D015153:Blotting, Western; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D018450:Disease Progression; D004224:Diterpenes / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D008246:Lysophospholipids / Q000494:pharmacology; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism; D010051:Ovarian Neoplasms / Q000378:metabolism / Q000473:pathology / Q000517:prevention & control*; D010766:Phosphorylation / Q000187:drug effects; D013997:Time Factors; D023041:Xenograft Model Antitumor Assays; D018631:ras Proteins / Q000378:metabolism
chemical_list: D000970:Antineoplastic Agents; D004224:Diterpenes; D008246:Lysophospholipids; D020928:Mitogen-Activated Protein Kinases; D018631:ras Proteins; C032881:lysophosphatidic acid; C031049:geranylgeranylacetone