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Engineering Bone Formation from Human Dental Pulp- and Periodontal Ligament-Derived Cells

A robust method for inducing bone formation from cultured dental mesenchymal cells has not been established. In this study, a method for generating bone tissue in vivo from cultured human dental pulp- and periodontal ligament-derived cells (DPCs and PDLCs, respectively) was designed using exogenous...

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Published in:Annals of biomedical engineering 2011-01, Vol.39 (1), p.26-34
Main Authors: Ikeda, Hideyoshi, Sumita, Yoshinori, Ikeda, Mihoko, Ikeda, Hisazumi, Okumura, Teruhito, Sakai, Eiko, Nishimura, Masahiro, Asahina, Izumi
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creator Ikeda, Hideyoshi
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description A robust method for inducing bone formation from cultured dental mesenchymal cells has not been established. In this study, a method for generating bone tissue in vivo from cultured human dental pulp- and periodontal ligament-derived cells (DPCs and PDLCs, respectively) was designed using exogenous bone morphogenetic protein 2 (BMP2). DPCs and PDLCs showed enhanced alkaline phosphatase (ALP) activity and calcified nodule formation in medium containing dexamethasone, β-glycerophosphate, and ascorbic acid (osteogenic medium). However, the addition of recombinant human bone morphogenetic protein 2 (rhBMP2) to osteogenic medium remarkably increased ALP activity and in vitro calcification above the increases observed with osteogenic medium alone. rhBMP2 also significantly upregulated the expression of osteocalcin , osteopontin , and dentin matrix protein 1 mRNA in both cell types cultured in osteogenic medium. Finally, we detected prominent bone-like tissue formation in vivo when cells had been exposed to rhBMP2 in osteogenic medium. In contrast, treatments with osteogenic medium or rhBMP2 alone could not induce abundant mineralized tissue formation. We propose here that treatment with rhBMP2 in osteogenic medium can make dental mesenchymal tissues a highly useful source of cells for bone tissue engineering. In addition, both DPCs and PDLCs showed similar and remarkable osteo-inducibility.
doi_str_mv 10.1007/s10439-010-0115-2
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subjects Biochemistry
Biocompatibility
Biological and Medical Physics
Biomedical and Life Sciences
Biomedical Engineering and Bioengineering
Biomedical materials
Biomedicine
Biophysics
Bone Development - drug effects
Bone Development - physiology
Bone Morphogenetic Protein 2 - administration & dosage
Bones
Cell Differentiation
Cells, Cultured
Classical Mechanics
Coculture Techniques
Dental Pulp - cytology
Dental Pulp - drug effects
Dental Pulp - physiology
Human
Humans
In vivo testing
In vivo tests
Osteogenesis - genetics
Osteogenesis - physiology
Periodontal Ligament - cytology
Periodontal Ligament - drug effects
Periodontal Ligament - physiology
Proteins
Surgical implants
Tissue Engineering - methods
title Engineering Bone Formation from Human Dental Pulp- and Periodontal Ligament-Derived Cells
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