title: Scutellaria barbata D. Don induces c-fos gene expression in human uterine leiomyomal cells by activating beta2-adrenergic receptors.
abstract: Scutellaria barbata D. Don (Lamiaceae; SB) inhibited the growth of uterine leiomyomal (LM) cells with unknown actions. The expression patterns of beta-adrenergic receptors (beta-ARs) in human uterine LM cells and functional coupling to gene expression have also been investigated. Northern blot analysis showed that beta-AR subtypes are expressed at different levels in the uterine LM cells and myometrial smooth muscle cells (SMCs). beta1-AR expression was to be found approximately at the same level in the two cell types. beta2-ARs were expressed at higher levels in uterine LM cells than that in myometrial SMCs. beta3-AR expression was not found in both the cells. c-fos gene expression was induced by SB in uterine LM cells via increases in adenosine-3',5', cyclic monophosphate (cAMP), which in turn activated the cAMP/protein kinase A (PKA) pathway. The PKA inhibitor, H89, inhibited c-fos gene expression induced by SB. It seems that the mechanism of proto-oncogenes c-fos different leiomyoma from other myometrial cancer. Further studies are necessary to elucidate whether c-fos induction by SB in uterine LM cells influences a regression of leiomyoma or induces other differentiation.
authors.affiliation: Department of Biochemistry, Molecular Biology and Gynecology, Dongguk University College of Oriental Medicine, and National Research Laboratory for Glycobiology, Korean Ministry of Science and Technology, Kyungju City, Kyungbuk, Korea.
authors.forename: T-K
authors.initials: TK
authors.lastname: Lee
authors.forename: H-L
authors.initials: HL
authors.lastname: Cho
authors.forename: D-I
authors.initials: DI
authors.lastname: Kim
authors.forename: Y-C
authors.initials: YC
authors.lastname: Lee
authors.forename: C-H
authors.initials: CH
authors.lastname: Kim
mesh_terms: D000328:Adult; D002460:Cell Line / Q000187:drug effects / Q000378:metabolism; D045744:Cell Line, Tumor / Q000187:drug effects / Q000378:metabolism; D002470:Cell Survival / Q000187:drug effects / Q000235:genetics; D017931:DNA Primers; D004305:Dose-Response Relationship, Drug; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007889:Leiomyoma / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D009215:Myometrium / Q000473:pathology; D010936:Plant Extracts / Q000494:pharmacology*; D016133:Polymerase Chain Reaction; D016760:Proto-Oncogene Proteins c-fos / Q000235:genetics*; D018343:Receptors, Adrenergic, beta-2 / Q000378:metabolism*; D027343:Rhizome; D031363:Scutellaria; D014594:Uterine Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*
chemical_list: D017931:DNA Primers; D010936:Plant Extracts; D016760:Proto-Oncogene Proteins c-fos; D018343:Receptors, Adrenergic, beta-2