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Effect of FGF-2, TGF-β-1, and BMPs on Teno/Ligamentogenesis and Osteo/Cementogenesis of Human Periodontal Ligament Stem Cells

  • Hyun, Sun-Yi (Department of Nanobiomedical Science and BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University) ;
  • Lee, Ji-Hye (Department of Nanobiomedical Science and BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University) ;
  • Kang, Kyung-Jung (Department of Nanobiomedical Science and BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University) ;
  • Jang, Young-Joo (Department of Nanobiomedical Science and BK21 PLUS Global Research Center for Regenerative Medicine, Dankook University)
  • Received : 2017.02.08
  • Accepted : 2017.07.11
  • Published : 2017.08.31

Abstract

The periodontal ligament (PDL) is the connective tissue between tooth root and alveolar bone containing mesenchymal stem cells (MSC). It has been suggested that human periodontal ligament stem cells (hPDLSCs) differentiate into osteo/cementoblast and ligament progenitor cells. The periodontitis is a representative oral disease where the PDL tissue is collapsed, and regeneration of this tissue is important in periodontitis therapy. Fibroblast growth factor-2 (FGF-2) stimulates proliferation and differentiation of fibroblastic MSCs into various cell lineages. We evaluated the dose efficacy of FGF-2 for cytodifferentiation of hPDLSCs into ligament progenitor. The fibrous morphology was highly stimulated even at low FGF-2 concentrations, and the expression of teno/ligamentogenic markers, scleraxis and tenomodulin in hPDLSCs increased in a dose dependent manner of FGF-2. In contrast, expression of the osteo/cementogenic markers decreased, suggesting that FGF-2 might induce and maintain the ligamentogenic potential of hPDLSCs. Although the stimulation of tenocytic maturation by $TGF-{\beta}1$ was diminished by FGF-2, the inhibition of the expression of early ligamentogenic marker by $TGF-{\beta}1$ was redeemed by FGF-2 treatment. The stimulating effect of BMPs on osteo/cementogenesis was apparently suppressed by FGF-2. These results indicate that FGF-2 predominantly differentiates the hPDLSCs into teno/ligamentogenesis, and has an antagonistic effect on the hard tissue differentiation induced by BMP-2 and BMP-4.

Acknowledgement

Supported by : NRF

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