title: Osteogenic differentiation of human periosteal-derived cells in a three-dimensional collagen scaffold.
abstract: This study examined the osteogenic differentiation of cultured human periosteal-derived cells grown in a three dimensional collagen-based scaffold. Periosteal explants with the appropriate dimensions were harvested from the mandible during surgical extraction of lower impacted third molar. Periosteal-derived cells were introduced into cell culture. After passage 3, the cells were divided into two groups and cultured for 28 days. In one group, the cells were cultured in two-dimensional culture dishes with osteogenic inductive medium containing dexamethasone, ascorbic acid, and β-glycerophosphate. In the other group, the cells were seeded onto a three-dimensional collagen scaffold and cultured under the same conditions. We examined the bioactivity of alkaline phosphatase (ALP), the RT-PCR analysis for ALP and osteocalcin, and measurements of the calcium content in the periosteal-derived cells of two groups. Periosteal-derived cells were successfully differentiated into osteoblasts in the collagen-based scaffold. The ALP activity in the periosteal-derived cells was appreciably higher in the three-dimensional collagen scaffolds than in the two-dimensional culture dishes. The levels of ALP and osteocalcin mRNA in the periosteal-derived cells was also higher in the three-dimensional collagen scaffolds than in the two-dimensional culture dishes. The calcium level in the periosteal-derived cells seeded onto three-dimensional collagen scaffolds showed a 5.92-fold increase on day 7, 3.28-fold increase on day 14, 4.15-fold increase on day 21, and 2.91-fold increase on day 28, respectively, compared with that observed in two-dimensional culture dishes. These results suggest that periosteal-derived cells have good osteogenic capacity in a three-dimensional collagen scaffold, which provides a suitable environment for the osteoblastic differentiation of these cells.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Institute of Health Sciences, Biomedical Center (BK21), Gyeongsang National University School of Medicine, Jinju 660-702, Republic of Korea.
authors.forename: Young-Mo
authors.initials: YM
authors.lastname: Ryu
authors.forename: Young-Sool
authors.initials: YS
authors.lastname: Hah
authors.forename: Bong-Wook
authors.initials: BW
authors.lastname: Park
authors.forename: Deok Ryong
authors.initials: DR
authors.lastname: Kim
authors.forename: Gu Seob
authors.initials: GS
authors.lastname: Roh
authors.forename: Jong-Ryoul
authors.initials: JR
authors.lastname: Kim
authors.forename: Uk-Kyu
authors.initials: UK
authors.lastname: Kim
authors.forename: Gyu-Jin
authors.initials: GJ
authors.lastname: Rho
authors.forename: Geun-Ho
authors.initials: GH
authors.lastname: Maeng
authors.forename: June-Ho
authors.initials: JH
authors.lastname: Byun
mesh_terms: D000469:Alkaline Phosphatase / Q000235:genetics / Q000378:metabolism; D000818:Animals; D002113:Calcification, Physiologic; D018929:Cell Culture Techniques / Q000295:instrumentation* / Q000379:methods; D002454:Cell Differentiation / Q000502:physiology*; D002478:Cells, Cultured; D003094:Collagen / Q000378:metabolism*; D006801:Humans; D008422:Materials Testing; D015675:Osteocalcin / Q000235:genetics / Q000378:metabolism; D010012:Osteogenesis / Q000502:physiology*; D010521:Periosteum / Q000166:cytology*; D013552:Swine; D023822:Tissue Engineering / Q000295:instrumentation / Q000379:methods; D054457:Tissue Scaffolds / Q000737:chemistry*
chemical_list: D015675:Osteocalcin; D003094:Collagen; D000469:Alkaline Phosphatase