title: Effects of various steroids on platelet-derived endothelial cell growth factor (PD-ECGF) and its mRNA expression in uterine endometrial cancer cells.
abstract: Progestins diminish the estrogen-induced angiogenic potential related to basic fibroblast growth factor (FGF) and vascular endothelial growth factor (VEGF) in uterine endometrial cancer cells. This led us to study the effect of various steroids on the expression of platelet-derived endothelial cell growth factor (PD-ECGF) as the other pertinent angiogenic factor in well-differentiated uterine endometrial cancer cell line Ishikawa. In Ishikawa cells, estradiol induced the expression of PD-ECGF and its mRNA. The estrogen-induced expression was increased approximately two-fold by progesterone and by its metabolite, 17alpha-hydroxyprogesterone, but not by medroxyprogesterone acetate (MPA). Therefore, progesterone and 17alpha-hydroxyprogesterone as endogenous steroids might induce PD-ECGF-related angiogenic potential in uterine endometrial cancer cells, but not MPA as a synthetic steroid. In conclusion, the failure of PD-ECGF induction by MPA might be the great merit of anti-angiogenic treatment with MPA for uterine endometrial cancers.
authors.affiliation: Department of Obstetrics and Gynecology, Gifu University School of Medicine, 40 Tsukasa-machi, Gifu City 500-8705, Japan. iku@k7.dion.ne.jp
authors.forename: Ikumi
authors.initials: I
authors.lastname: Aoki
authors.forename: Jiro
authors.initials: J
authors.lastname: Fujimoto
authors.forename: Teruhiko
authors.initials: T
authors.lastname: Tamaya
mesh_terms: D019326:17-alpha-Hydroxyprogesterone / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D016889:Endometrial Neoplasms / Q000378:metabolism*; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D018919:Neovascularization, Physiologic; D009841:Oligonucleotides / Q000737:chemistry; D016133:Polymerase Chain Reaction; D011374:Progesterone / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013256:Steroids / Q000378:metabolism / Q000494:pharmacology*; D013939:Thymidine Phosphorylase / Q000378:metabolism*; D013997:Time Factors; D014407:Tumor Cells, Cultured
chemical_list: D009841:Oligonucleotides; D012333:RNA, Messenger; D013256:Steroids; D011374:Progesterone; D019326:17-alpha-Hydroxyprogesterone; D013939:Thymidine Phosphorylase