Recruitment of bone marrow-derived cells to periodontal tissue defects

  • Kimura Y
  • Komaki M
  • Iwasaki K
  • et al.
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Abstract

Bone marrow-derived cells (BMCs) are considered to be a major source of mesenchymal stem cells (MSCs) in adults and are known to be effective in periodontal tissue regeneration. However, whether endogenous BMCs are involved in periodontal tissue repair process is uncertain. We therefore created periodontal tissue defects in the buccal alveolar bone of mandibular first molars in bone marrow chimeric mice, and immunohistochemically examined the expression of stromal cell derived factor-1 (SDF-1) and the mobilization of BMCs. We found that SDF-1 expression was increased around the defects at as early as 1 week after injury and that BMCs were mobilized to the defects, while GFP+/CD45+ were rarely observed. Fluorescence-activated cell sorting (FACS) analysis demonstrated that the number of platelet-derived growth factor receptor (pdgfr) α+/Sca-1+ (PαS) cells in the bone marrow decreased after injury. Taken together, these results suggest that BMCs are mobilized to the periodontal tissue defects. Recruitment of BMCs, including a subset of MSCs could be a new target of periodontal treatment.

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Kimura, Y., Komaki, M., Iwasaki, K., Sata, M., Izumi, Y., & Morita, I. (2014). Recruitment of bone marrow-derived cells to periodontal tissue defects. Frontiers in Cell and Developmental Biology, 2. https://doi.org/10.3389/fcell.2014.00019

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