title: Oxytocin improves the expression of cardiac specific markers in porcine bone marrow stem cells differentiation.
abstract: Bone marrow stem cells (BMSCs) treated with 5-azacytidine possess myogenic differentiation potential. Oxytocin (OT) induces cardiomyogenesis in murine embryonic and cardiac stem cells. We attempted to isolate, characterize, and induce OT-mediated cardiomyogenic differentiation of porcine pBMSCs. Cells were treated as: control, OT, and 5-azacytidine groups. During early passages, transcripts of Oct4, GATA4, OT receptor, and phospholamban were expressed. RT-PCR showed upregulation of GATA4 in OT and 5-azacytidine-induced groups. Immunocytochemistry revealed higher expressions of cardiac troponin T and myosin heavy chain in OT than in 5-azacytidine-induced groups (p < 0.01). Western blot analysis showed upregulation of cardiac troponin I in OT-induced pBMSCs (p < 0.01). We infer pBMSCs should be induced during early passages, when expressing transcription factors related to pluripotency and cardiomyogenesis, as well as OT receptor. The more abundant expression of cardiac specific proteins in OT-treated pBMSCs suggests OT could be a more potent cardiomyogenic inducer of pBMSC.
authors.affiliation: GREPAQ - Department of Veterinary Biomedicine, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada.
authors.forename: Norma
authors.initials: N
authors.lastname: Ybarra
authors.affiliation: CRRA - Department of Veterinary Biomedicine, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada.
authors.forename: Patrick
authors.initials: P
authors.lastname: Vincent
authors.affiliation: CRRA - Department of Veterinary Biomedicine, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada.
authors.forename: Lawrence C
authors.initials: LC
authors.lastname: Smith
authors.affiliation: GREPAQ - Department of Veterinary Biomedicine, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada. Electronic address: eric.troncy@umontreal.ca.
authors.forename: Eric
authors.initials: E
authors.lastname: Troncy
mesh_terms: D000818:Animals; D001374:Azacitidine / Q000494:pharmacology; D001854:Bone Marrow Cells / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology*; D002454:Cell Differentiation / Q000187:drug effects / Q000502:physiology*; D002478:Cells, Cultured; D050991:GATA4 Transcription Factor / Q000378:metabolism; D066298:In Vitro Techniques; D051379:Mice; D032383:Myocytes, Cardiac / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D018995:Myosin Heavy Chains / Q000378:metabolism*; D050814:Octamer Transcription Factor-3 / Q000378:metabolism; D010121:Oxytocin / Q000378:metabolism / Q000494:pharmacology*; D018045:Receptors, Oxytocin / Q000378:metabolism; D013234:Stem Cells / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D013552:Swine / Q000378:metabolism*; D020107:Troponin T / Q000378:metabolism*
chemical_list: D050991:GATA4 Transcription Factor; D050814:Octamer Transcription Factor-3; D018045:Receptors, Oxytocin; D020107:Troponin T; D010121:Oxytocin; D018995:Myosin Heavy Chains; D001374:Azacitidine
keywords: Cardiac differentiation; Oxytocin; Porcine; Stem cells