title: Platelet-rich plasma enhances the differentiation of dental pulp progenitor cells into odontoblasts.
abstract: OBJECTIVE
  To investigate the effects of PRP on odontoblastic differentiation using dental pulp progenitor cells derived from the dental papilla of rat incisors.
  
  
  METHODS
  Monolayer cultures of odontoblastic lineage KN-3 cells were incubated with PRP for various time periods. The expression of dentine sialophosphoprotein (DSPP) and dentine matrix protein-1 (DMP-1) was determined using real-time reverse transcription-polymerase chain reaction and Western blot analyses. To further clarify the role of PRP in odontogenesis, KN-3 cells were stimulated with PRP in the presence of ascorbic acid and β-glycerophosphate. The cells were stained for alkaline phosphatase (ALP), and ALP activity was quantified in cell lysates. The formation of mineralized nodules was assessed by alizarin red staining. Statistical analysis was performed by one-way analysis of variance.
  
  
  RESULTS
  PRP increased the mRNA and protein expressions of odontoblastic markers, such as DSPP and DMP-1. Furthermore, PRP stimulated the ALP activity and mineralized nodule formation induced by ascorbic acid and β-glycerophosphate in a time-dependent manner.
  
  
  CONCLUSIONS
  PRP enhances odontoblastic differentiation of KN-3 cells. These results indicate that PRP could be a potential candidate for use in the regeneration of dentine-pulp complex.
authors.affiliation: Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan.|Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: K H
authors.initials: KH
authors.lastname: Yeom
authors.affiliation: Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: W
authors.initials: W
authors.lastname: Ariyoshi
authors.affiliation: Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Okinaga
authors.affiliation: Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Washio
authors.affiliation: Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Morotomi
authors.affiliation: Division of Endodontics and Restorative Dentistry, Department of Science of Oral Functions, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Kitamura
authors.affiliation: Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nishihara
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D001205:Ascorbic Acid / Q000494:pharmacology; D015153:Blotting, Western; D002118:Calcium / Q000378:metabolism; D002454:Cell Differentiation; D002478:Cells, Cultured; D003782:Dental Pulp / Q000166:cytology*; D016326:Extracellular Matrix Proteins / Q000378:metabolism; D005994:Glycerophosphates / Q000378:metabolism; D006801:Humans; D009804:Odontoblasts / Q000187:drug effects*; D010750:Phosphoproteins / Q000378:metabolism; D053657:Platelet-Rich Plasma; D051381:Rats; D060888:Real-Time Polymerase Chain Reaction; D012795:Sialoglycoproteins / Q000378:metabolism; D000099311:Dentin Sialophosphoprotein
chemical_list: D000469:Alkaline Phosphatase; D001205:Ascorbic Acid; D002118:Calcium; D016326:Extracellular Matrix Proteins; D005994:Glycerophosphates; D010750:Phosphoproteins; D012795:Sialoglycoproteins; D000099311:Dentin Sialophosphoprotein; C081635:Dmp1 protein, rat; C031463:beta-glycerophosphoric acid
keywords: dentine matrix protein-1; dentine sialoprotein; mineralization; odontoblastic differentiation; platelet-rich plasma