Stem cells from human exfoliated deciduous teeth (SHED) enhance wound healing and the possibility of novel cell therapy

Cytotherapy. 2011 May;13(5):598-605. doi: 10.3109/14653249.2010.542462. Epub 2011 Feb 22.

Abstract

Background aims: In recent years, stem cells from human exfoliated deciduous teeth (SHED) have received attention as a novel stem cell source with multipotent potential. We examined the effect on wound-healing promotion with unique stem cells from deciduous teeth as a medical waste.

Methods: An excisional wound-splinting mouse model was used and the effect of wound healing among SHED, human mesenchymal stromal cells (hMSCs), human fibroblasts (hFibro) and a control (phosphate-buffered saline; PBS) was evaluated by macroscopy, histology and enzyme-linked immunosorbent assay (ELISA), and the expression of hyaluronan (HA), which is related to wound healing, investigated.

Results: SHED and hMSCs accelerated wound healing compared with hFibro and the control. There was a statistically significant difference in wound healing area among hFibro, hMSCs and SHED compared with the control after day 5. At days 7 and 14 after cell transplantation, the histologic observation showed that transplanted PKH26-positive cells were surrounded by human HA binding protein, especially in hMSCs and SHED. HA expression volume values were 1558.41 ± 60.33 (control), 2092.75 ± 42.56 (hFibro), 2342.07 ± 188.10 (hMSCs) and 2314.85 ± 164.91 (SHED) ng/mg, respectively, and significantly higher in hMSCs and SHED compared with hFibro and control at days 7 and 14 (P < 0.05).

Conclusions: Our results show that SHED hMSCs have similar effects of wound-healing promotion as hFibro and controls. This implies that SHED might offer a unique stem cell resource and the possibility of novel cell therapies for wound healing in the future.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Separation
  • Disease Models, Animal
  • Fibroblasts / cytology
  • Fibroblasts / transplantation
  • Humans
  • Mesenchymal Stem Cell Transplantation
  • Mesenchymal Stem Cells / cytology
  • Mesenchymal Stem Cells / physiology
  • Mice
  • Mice, Nude
  • Stem Cell Transplantation / methods*
  • Stem Cells / cytology*
  • Stromal Cells / cytology
  • Stromal Cells / transplantation
  • Tooth Exfoliation*
  • Tooth, Deciduous / cytology*
  • Wound Healing*