title: Human dental pulp stem cells cultured onto dentin derived scaffold can regenerate dentin-like tissue in vivo.
abstract: Regeneration of dentin tissues in the pulp space of teeth serves the ultimate goal of preserving teeth via endodontic approaches. In recent times, many studies suggested that human dentin scaffolds combined with dental stem cells was a potential strategy for the complete dentin tissue regeneration. In this study, human dental pulp stem cells (DPSCs) were isolated and cultured. Dentin specimens were prepared from human third molars and treated with ethylene diamine tetra-acetic acid and citric acid to remove the smear layer. Then, DPSCs were cultured onto human treated dentin (hTD) and implanted in mouse model for 4, 6 and 8 weeks. The resulting grafts were assessed by hematoxylin and eosin stain and immunohistochemical stains. As a result, DPSCs were supported and induced to regenerate of dentin-like tissues which expressed specific dentin markers such as dentin sialophosphoprotein and dentin matrix protein 1 by combination with hTD in vivo. Furthermore, cells existed in the newly-formed dentin-like tissues also expressed typical human mitochondria antibodies, demonstrated that new tissues originated from human. In conclusion, the obtain results extend hopefully newly-established therapy to apply in endodontics and traumatic dental hard tissues.
authors.affiliation: Department of Physiology and Animal Biotechnology, Faculty of Biology, University of Science, Vietnam National University at Ho Chi Minh City, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam. tlbha@hcmus.edu.vn.
authors.forename: Ha Le Bao
authors.initials: Hle B
authors.lastname: Tran
authors.affiliation: Department of Physiology and Animal Biotechnology, Faculty of Biology, University of Science, Vietnam National University at Ho Chi Minh City, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam.
authors.forename: Vu Nguyen
authors.initials: VN
authors.lastname: Doan
mesh_terms: D003782:Dental Pulp / Q000166:cytology*; D003804:Dentin / Q000737:chemistry / Q000166:cytology / Q000254:growth & development*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D016557:Guided Tissue Regeneration, Periodontal / Q000295:instrumentation*; D006801:Humans; D012038:Regeneration / Q000502:physiology; D033581:Stem Cell Transplantation / Q000379:methods*; D013234:Stem Cells / Q000166:cytology*; D054457:Tissue Scaffolds
keywords: Dental pulp; Dentin; Extracellular matrix protein; Mesenchymal stem cells; Tissue engineering