title: Beta-adrenergic signals regulate adipogenesis of mouse mesenchymal stem cells via cAMP/PKA pathway.
abstract: The adipogenic capacity of mesenchymal stem cells (MSCs) and the involvement of beta-adrenergic signals in lipolysis and thermogenesis have been well established. However, little is known about the development of beta-adrenergic receptor (beta-AR) systems and the role of beta-adrenergic signals in adipogenic differentiation of MSCs. In this study, we demonstrated that both the mRNA and protein levels of beta2- and beta3-AR were up-regulated following adipogenesis of mouse bone marrow derived MSCs. We also established that beta-AR agonists negatively while antagonists positively affected MSC adipogenesis. Both the beta2- and beta3-AR were involved in MSC adipogenesis, with beta3-AR being the predominant subtype. The effect of beta-ARs on MSC adipogenesis was at least partly mediated via the cAMP/PKA signaling pathway. These findings suggested that MSC is also a target for beta-adrenergic regulation, and beta-adrenergic signaling (major beta3-signaling) plays a role in MSC adipogenesis.
authors.affiliation: Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, PR China.
authors.forename: Haifang
authors.initials: H
authors.lastname: Li
authors.forename: Chichun
authors.initials: C
authors.lastname: Fong
authors.forename: Yao
authors.initials: Y
authors.lastname: Chen
authors.forename: Guoping
authors.initials: G
authors.lastname: Cai
authors.forename: Mengsu
authors.initials: M
authors.lastname: Yang
mesh_terms: D017667:Adipocytes / Q000166:cytology / Q000187:drug effects / Q000502:physiology; D050156:Adipogenesis / Q000187:drug effects / Q000502:physiology*; D000318:Adrenergic beta-Agonists / Q000494:pharmacology; D000319:Adrenergic beta-Antagonists / Q000494:pharmacology; D000818:Animals; D002454:Cell Differentiation / Q000187:drug effects / Q000502:physiology; D002478:Cells, Cultured; D000242:Cyclic AMP / Q000378:metabolism*; D017868:Cyclic AMP-Dependent Protein Kinases / Q000235:genetics / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D005260:Female; D007545:Isoproterenol / Q000494:pharmacology; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects / Q000502:physiology*; D051379:Mice; D018343:Receptors, Adrenergic, beta-2 / Q000235:genetics / Q000378:metabolism*; D022702:Receptors, Adrenergic, beta-3 / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction / Q000187:drug effects / Q000502:physiology*
chemical_list: D000318:Adrenergic beta-Agonists; D000319:Adrenergic beta-Antagonists; D018343:Receptors, Adrenergic, beta-2; D022702:Receptors, Adrenergic, beta-3; D000242:Cyclic AMP; D017868:Cyclic AMP-Dependent Protein Kinases; D007545:Isoproterenol