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Isolation and characterization of human periodontal ligament (PDL) stem cells (PDLSCs) from the inflamed PDL tissue: in vitro and in vivo evaluations
Author(s) -
Park JungChul,
Kim JeongMin,
Jung ImHee,
Kim Jane C.,
Choi SeongHo,
Cho KyooSung,
Kim ChangSung
Publication year - 2011
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.2011.01716.x
Subject(s) - periodontal ligament stem cells , periodontal fiber , in vivo , in vitro , isolation (microbiology) , regeneration (biology) , medicine , biology , dentistry , microbiology and biotechnology , bioinformatics , biochemistry , alkaline phosphatase , enzyme
Park J‐C, Kim J‐M, Jung I‐H, Kim JC, Choi S‐H, Cho K‐S, Kim C‐S. Isolation and characterization of human periodontal ligament (PDL) stem cells (PDLSCs) from the inflamed PDL tissue: in vitro and in vivo evaluations. J Clin Periodontol 2011; 38: 721–731. doi: 10.1111/j.1600‐051X.2011.01716.x. Abstract Objectives: Mesenchymal stem cells (MSC) could be isolated from healthy periodontal ligaments (PDL). The aims of this study were to isolate and characterize human PDL stem cells (hPDLSCs) from inflamed PDL tissue, and to evaluate their regenerative potential. Materials and Methods: Inflamed hPDLSCs (ihPDLSCs) were isolated from the inflamed PDL tissue obtained from intra‐bony defects during flap surgery, and characterized by immunohistochemical staining, colony‐forming unit assay, fluorescence‐activated cell sorting, and mRNA expression in comparison with healthy hPDLSCs obtained from extracted teeth for orthodontic purpose. The proliferative potential and migratory potential was evaluated, and compared with healthy hPDLSCs. Regenerative potential was assessed by an in vivo ectopic transplantation model. Results: ihPDLSCs were successfully isolated and characterized as MSCs. Both ihPDLSCs and hPDLSCs were successfully differentiated under osteogenic/cementogenic and adipogenic microenvironment. The proliferative potential did not differ between healthy hPDLSCs and ihPDLSCs, while the migratory capacity was significantly increased in ihPDLSCs ( p <0.05). Both groups exhibited new cementum‐like tissue and related PDL fibre regeneration in an in vivo transplantation model. Conclusion: ihPDLSCs could be successfully isolated from inflamed PDL tissue, and they retained the regenerative potential for cementum and related PDL tissues.