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Capturing the regenerative potential of periodontal ligament fibroblasts.

  • Author(s): Scanlon, C
  • Marchesan, J
  • Soehren, S
  • Matsuo, M
  • Kapila, Y
  • et al.

Published Web Location

http://www.ncbi.nlm.nih.gov/pubmed/21738334
No data is associated with this publication.
Abstract

The cell population within the periodontal ligament (PDL) tissue is remarkably heterogeneous1. Fibroblasts, a mixed population of cells, are the main cellular component of the PDL and the cell type most often studied for periodontal regeneration. Osteoblasts and osteoclasts are found on the bone side, while fibroblasts, macrophages, undifferentiated adult/mesenchymal stem cells, neural elements, and endothelial cells are found throughout the PDL. Epithelial rests of Malassez cells and cementoblasts are focused near the root surface. PDL tissue also includes loose connective tissue between dense fiber bundles that contain branches of the periodontal blood vessels and nerves2. The complexity of the PDL tissue, with its various cell types and cell progenitor components, explains the challenges involved in therapies to restore tissue following periodontal disease. Cementoblasts, osteoblasts, and endothelial cells must migrate, differentiate, and coordinately interact with a variety of soluble mediators to regenerate the periodontium3. Stem cells located in the PDL tissue are key contributors to this process4. Stem cells in the PDL are important not only for formation and maintenance of the tissue but also for repair, remodeling, and regeneration of adjacent alveolar bone and cementum5. Our laboratory has shown that progenitor cells isolated from PDL tissue by selection with cell surface markers STRO-1+ and CD146+ are capable of differentiating into chondrogenic, osteogenic, and adipogenic phenotypes under appropriate culture conditions

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