title: Bone morphogenetic protein-2 enhances bone regeneration mediated by transplantation of osteogenically undifferentiated bone marrow-derived mesenchymal stem cells.
abstract: We have hypothesized that human bone marrow-derived mesenchymal stem cells (BMMSCs), that are not osteogenically differentiated prior to implantation, would regenerate bone extensively in vivo once exogenous bone morphogenetic protein-2 (BMP-2) was delivered to the implantation site. BMP-2 released from heparin-conjugated poly(lactic-co-glycolic acid) (HCPLGA) scaffolds stimulates osteogenic differentiation of cultured BMMSCs. Upon implantation, undifferentiated BMMSCs on BMP-2-loaded HCPLGA scaffolds induce far more extensive bone formation than either undifferentiated BMMSCs or osteogenically differentiated BMMSCs on HCPLGA scaffolds. These BMP-2-loaded HCPLGA scaffolds could prove invaluable for in vivo regeneration of bone from undifferentiated human BMMSCs.
authors.affiliation: Department of Chemical Engineering, Hanyang University, Seoul, 133-791, Korea.
authors.forename: Sun-Woong
authors.initials: SW
authors.lastname: Kang
authors.forename: Wan-Geun
authors.initials: WG
authors.lastname: La
authors.forename: Jin Muk
authors.initials: JM
authors.lastname: Kang
authors.forename: Jung-Ho
authors.initials: JH
authors.lastname: Park
authors.forename: Byung-Soo
authors.initials: BS
authors.lastname: Kim
mesh_terms: D001672:Biocompatible Materials / Q000494:pharmacology; D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins / Q000494:pharmacology*; D001861:Bone Regeneration / Q000187:drug effects*; D002454:Cell Differentiation / Q000187:drug effects*; D002478:Cells, Cultured; D005343:Fibrinolytic Agents / Q000494:pharmacology; D006493:Heparin / Q000494:pharmacology; D006801:Humans; D019344:Lactic Acid / Q000494:pharmacology*; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation; D059630:Mesenchymal Stem Cells / Q000166:cytology; D008875:Middle Aged; D010012:Osteogenesis / Q000187:drug effects*; D011100:Polyglycolic Acid / Q000494:pharmacology*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D016212:Transforming Growth Factor beta / Q000494:pharmacology*
chemical_list: C525718:BMP2 protein, human; D001672:Biocompatible Materials; D055396:Bone Morphogenetic Protein 2; D019485:Bone Morphogenetic Proteins; D005343:Fibrinolytic Agents; D016212:Transforming Growth Factor beta; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D006493:Heparin