title: Effects of transforming growth factor-beta 1 and ascorbic acid on differentiation of human bone-marrow-derived mesenchymal stem cells into smooth muscle cell lineage.
abstract: Bone-marrow-derived mesenchymal stem cells (MSCs) can differentiate into a variety of cell types including smooth muscle cells (SMCs). We have attempted to demonstrate that, following treatment with transforming growth factor-beta 1 (TGF-beta1) and ascorbic acid (AA), human bone-marrow-derived MSCs differentiate into the SMC lineage for use in tissue engineering. Quantitative polymerase chain reaction for SMC-specific gene (alpha smooth muscle actin, h1-calponin, and SM22alpha) expression was performed on MSCs, which were cultured with various concentrations of TGF-beta1 or AA. TGF-beta1 had a tendency to up-regulate the expression of SMC-specific genes in a dose-dependent manner. The expression of SM22alpha was significantly up-regulated by 30 microM AA. We also investigated the additive effect of TGF-beta1 and AA for differentiation into SMCs and compared this effect with that of other factors including platelet-derived growth factor BB (PDGF-BB). In addition to SMC-specific gene expression, SMC-specific proteins increased by two to four times when TGF-beta1 and AA were used together compared with their administration alone. PDGF did not increase the expression of SMC-specific markers. MSCs cultured with TGF-beta1 and AA did not differentiate into osteoblasts and adipocytes. These results suggest that a combination of TGF-beta1 and AA is useful for the differentiation of MSCs into SMCs for use in tissue engineering.
authors.affiliation: Department of Clinical Cell Therapy and Tissue Engineering, Nagoya University School of Medicine, Showa-ku, Nagoya, Japan. ynarita@med.nagoya-u.ac.jp
authors.forename: Yuji
authors.initials: Y
authors.lastname: Narita
authors.forename: Aika
authors.initials: A
authors.lastname: Yamawaki
authors.forename: Hideaki
authors.initials: H
authors.lastname: Kagami
authors.forename: Minoru
authors.initials: M
authors.lastname: Ueda
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Ueda
mesh_terms: D001205:Ascorbic Acid / Q000494:pharmacology*; D001854:Bone Marrow Cells / Q000166:cytology; D002454:Cell Differentiation / Q000187:drug effects*; D019070:Cell Lineage; D049109:Cell Proliferation; D002478:Cells, Cultured; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000187:drug effects*; D032389:Myocytes, Smooth Muscle / Q000166:cytology*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D023822:Tissue Engineering / Q000379:methods; D053773:Transforming Growth Factor beta1 / Q000494:pharmacology*
chemical_list: D053773:Transforming Growth Factor beta1; D001205:Ascorbic Acid