Volume 51 Issue 6
Nov.  2020
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WANG Tao, WANG Shi-kai, CHEN Guo-qing, et al. A Novel Chemically Defined Medium Enhanced the Osteogenic Potential and Periodontal Bone Regeneration of Dental Papilla Cells[J]. JOURNAL OF SICHUAN UNIVERSITY (MEDICAL SCIENCE EDITION), 2020, 51(6): 735-741. doi: 10.12182/20201160101
Citation: WANG Tao, WANG Shi-kai, CHEN Guo-qing, et al. A Novel Chemically Defined Medium Enhanced the Osteogenic Potential and Periodontal Bone Regeneration of Dental Papilla Cells[J]. JOURNAL OF SICHUAN UNIVERSITY (MEDICAL SCIENCE EDITION), 2020, 51(6): 735-741. doi: 10.12182/20201160101

A Novel Chemically Defined Medium Enhanced the Osteogenic Potential and Periodontal Bone Regeneration of Dental Papilla Cells

doi: 10.12182/20201160101
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  • Corresponding author: E-mail: drtwd@sina.com
  • Received Date: 2020-02-12
  • Rev Recd Date: 2020-05-29
  • Publish Date: 2020-11-20
  •   Obejective   To investigate the role of a novel chemically defined medium (CDM) in the regulation of dental papilla cells (DPCs) functional phenotype in vitro and periodontal bone regeneration in vivo.  Methods  DPCs were isolated and cultured in conventional medium (CM) or CDM. The surface makers, and the proliferation, migration and osteogenic differentiation abilities of DPCs were evaluated. In vivo, the DPCs that mixed with collagen gel were implanted into the model rats in the defect of periodontal to repair the periodontal tissue. Regeneration of the tissues was examined by microcomputed tomography and histological observation.  Results  DPCs in the CM group and CDM group showed similar surface markers. Compared to the CM group, the CDM significantly enhanced the proliferation, colony-forming efficiency and migration of DPCs in vitro. In addition, real time PCR showed that the expression levels of osteogenesis-related genes, Runx2, Alp and Opn. were significantly enhanced in DPCs in the CDM group. DPCs cells treated with CDM also exhibited higher alkaline phosphatase activity and stronger ability of formation of mineralized nodules in vitro. In vivo, DPCs from CDM group significantly enhanced the periodontal bone regeneration and the reconstruction of periodontal bone tissues in rat periodontal defect model.  Conclusion  CDM is a suitable medium to culture DPCs for periodontal bone regeneration. This research provided a substitute for basic research and set the stage for future clinical application of stem cell transplantation.
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