Induced pluripotent stem cell lines derived from human gingival fibroblasts and periodontal ligament fibroblasts

Authors

  • N. Wada,

    1. School of Dentistry, Colgate Australian Clinical Dental Research Centre, University of Adelaide, Adelaide, SA, Australia
    2. Mesenchymal Stem Cell Group, Division of Haematology, Institute of Medical and Veterinary Science/Hanson Institute/CSCR, University of Adelaide, Adelaide, SA, Australia
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    • Equal first authors.

  • B. Wang,

    1. CSIRO Materials Science and Engineering, Clayton, Vic., Australia
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    • Equal first authors.

  • N.-H. Lin,

    1. School of Dentistry, Colgate Australian Clinical Dental Research Centre, University of Adelaide, Adelaide, SA, Australia
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  • A. L. Laslett,

    1. CSIRO Materials Science and Engineering, Clayton, Vic., Australia
    2. Department of Anatomy and Developmental Biology, Monash University, Clayton, Vic., Australia
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  • S. Gronthos,

    1. Mesenchymal Stem Cell Group, Division of Haematology, Institute of Medical and Veterinary Science/Hanson Institute/CSCR, University of Adelaide, Adelaide, SA, Australia
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  • P. M. Bartold

    1. School of Dentistry, Colgate Australian Clinical Dental Research Centre, University of Adelaide, Adelaide, SA, Australia
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Professor P. Mark Bartold, DDSc, PhD, School of Dentistry, Colgate Australian Clinical Dental Research Centre, University of Adelaide, Adelaide, SA 5005, Australia
Tel: +61 8 8303 3435
Fax: +61 8 8303 6429
e-mail: mark.bartold@adelaide.edu.au

Abstract

Wada N, Wang B, Lin N-H, Laslett AL, Gronthos S, Bartold PM. Induced pluripotent stem cell lines derived from human gingival and periodontal ligament fibroblasts. J Periodont Res 2011; 46: 438–447. © 2011 John Wiley & Sons A/S

Background and Objective:  Human induced pluripotent stem (iPS) cells, which have similar properties to human embryonic stem (hES) cells, have been generated from neonatal and adult human dermal fibroblasts by reprogramming. iPS cells have high pluripotency and differentiation potential, and may be a potential autologous stem cell source for future regenerative therapy.

Material and Methods:  iPS cell lines from human gingival fibroblasts and, for the first time, from periodontal ligament fibroblasts, were generated by reprogramming using a retroviral transduction cocktail of OCT3/4, SOX2, KLF4 and c-MYC. iPS induction was investigated through expression of the embryonic stem cell markers SSEA4, OCT4, NANOG, GCTM-2, TG30 and TRA-1-60. Following in vitro differentiation, the expression of genes for differentiation markers for ectoderm (SOX1, PAX6), mesoderm [RUNX1, T(Brachyury)] and endoderm (GATA4, AFP) was assessed by real-time RT-PCR. The ability to form teratomas following implantation into mouse testes was assessed by histology.

Results:  Human gingival fibroblast- and periodontal ligament fibroblast-derived iPS cells showed similar characteristics to hES cells. Both sets of iPS cells displayed colony morphology comparable to that of hES cells and expressed the hES cell-associated cell-surface antigens, SSEA3, SSEA4, GCTM-2, TG30 (CD9) and Tra-1-60, and the hES cell marker genes, OCT4, NANOG and GDF3. These iPS cells showed differentiation potential to form embryoid bodies in vitro and expressed genes for endoderm, ectoderm and mesoderm. Teratoma formation following implantation into mouse testes was observed.

Conclusion:  These results demonstrate that iPS cells can be successfully generated from adult human gingival and periodontal ligament fibroblasts.

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