Cryopreserved dental pulp tissues of exfoliated deciduous teeth is a feasible stem cell resource for regenerative medicine.

Abstract

Human exfoliated deciduous teeth have been considered to be a promising source for regenerative therapy because they contain unique postnatal stem cells from human exfoliated deciduous teeth (SHED) with self-renewal capacity, multipotency and immunomodulatory function. However preservation technique of deciduous teeth has not been developed. This study aimed to evaluate that cryopreserved dental pulp tissues of human exfoliated deciduous teeth is a retrievable and practical SHED source for cell-based therapy. SHED isolated from the cryopreserved deciduous pulp tissues for over 2 years (25-30 months) (SHED-Cryo) owned similar stem cell properties including clonogenicity, self-renew, stem cell marker expression, multipotency, in vivo tissue regenerative capacity and in vitro immunomodulatory function to SHED isolated from the fresh tissues (SHED-Fresh). To examine the therapeutic efficacy of SHED-Cryo on immune diseases, SHED-Cryo were intravenously transplanted into systemic lupus erythematosus (SLE) model MRL/lpr mice. Systemic SHED-Cryo-transplantation improved SLE-like disorders including short lifespan, elevated autoantibody levels and nephritis-like renal dysfunction. SHED-Cryo amended increased interleukin 17-secreting helper T cells in MRL/lpr mice systemically and locally. SHED-Cryo-transplantation was also able to recover osteoporosis bone reduction in long bones of MRL/lpr mice. Furthermore, SHED-Cryo-mediated tissue engineering induced bone regeneration in critical calvarial bone-defect sites of immunocompromised mice. The therapeutic efficacy of SHED-Cryo transplantation on immune and skeletal disorders was similar to that of SHED-Fresh. These data suggest that cryopreservation of dental pulp tissues of deciduous teeth provide a suitable and desirable approach for stem cell-based immune therapy and tissue engineering in regenerative medicine.

• Authors: Lan Ma, Yusuke Makino, Haruyoshi Yamaza, Kentaro Akiyama, Yoshihiro Hoshino, Guangtai Song, Toshio Kukita, Kazuaki Nonaka, Songtao Shi, Takayoshi Yamaza
• Journal: PloS one (PLoS One) Vol. 7 Issue 12 Pg. e51777 ( 2012) ISSN: 1932-6203 [Electronic] United States
• PMID: 23251621 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)

Chemical References

• Biomarkers
• Minerals

Topics

• Adult
• Animals
• Autoimmune Diseases (physiopathology, therapy)
• Biomarkers (metabolism)
• Bone Diseases (pathology, therapy)
• Cell Proliferation
• Cellular Microenvironment (immunology)
• Child
• Child, Preschool
• Cryopreservation
• Dental Pulp (cytology)
• Female
• Humans
• Immunomodulation
• Kidney Function Tests
• Mice
• Mice, Inbred MRL lpr
• Minerals (metabolism)
• Multipotent Stem Cells (cytology, metabolism)
• Regeneration (physiology)
• Regenerative Medicine
• Stem Cell Transplantation
• Stem Cells (cytology, metabolism)
• Th17 Cells (immunology)
• Tooth Exfoliation (pathology)
• Tooth, Deciduous (cytology)