Chinese Journal of Tissue Engineering Research ›› 2018, Vol. 22 ›› Issue (26): 4179-4183.doi: 10.3969/j.issn.2095-4344.0889

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Tissue-engineered skin for skin wound repair: construction by human acellular dermal matrix combined with bone marrow mesenchymal stem cells

Chi Kai, Wu Lei, Chen Long-jin, Li Yong-lin   

  1. Department of Plastic Surgery, the First People’s Hospital of Zhengzhou, Zhengzhou 450000, Henan Province, China
  • Received:2018-05-03 Online:2018-09-18 Published:2018-09-18
  • Contact: Li Yong-lin, M.D., Department of Plastic Surgery, the First People’s Hospital of Zhengzhou, Zhengzhou 450000, Henan Province, China
  • About author:Chi Kai, Master, Department of Plastic Surgery, the First People’s Hospital of Zhengzhou, Zhengzhou 450000, Henan Province, China

Abstract:

BACKGROUND: A variety of seed cells and scaffolds can be used for constructing tissue-engineered skin. Exploring a proper construction method is a hot topic of research.

OBJECTIVE: To explore the feasibility of tissue-engineered skin to promote healing of skin wounds in rats.
METHODS: Sprague-Dawley rats of 6-8 weeks old were taken to isolate bone marrow mesenchymal stem cells (BMSCs) using the whole bone marrow adherent method. Then, BMSCs were cultured and purified in vitro. Human foreskin samples were digested using enzyme digestion method to make human acellular dermal matrix (ADM). Tissue-engineered skin was thereafter constructed using BMSCs as seed cells and ADM as the scaffold, to cover the skin defect wound in the rats. Skin wound covered with ADM and nothing was used as ADM and blank control groups, respectively. Wound healing time was recorded and wound closure index was calculated. Evaluation of wound healing was conducted through hematoxylin-eosin, CK19 and BrdU immunohistochemical staining of wound samples at 2 weeks after transplantation.

RESULTS AND CONCLUSION: The wound closure indexes in the three groups were ranked as follows: tissue-engineered skin group > ADM group > blank control group, and there were significant differences between groups (P < 0.05). The wound healing time was shortest in the tissue-engineered skin group, shorter in the ADM group and longest in the blank control group, and there were also significant differences between groups (P < 0.05). Cells positive for BrdU were detected in the tissue-engineered skin group, and the expression level of CK19 was significantly higher in the tissue-engineered skin group as compared with the other two groups. In conclusion, the tissue-engineered skin constructed by BMSCs and ADM achieves good outcomes in the repair of full-thickness skin wound.

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Bone Marrow, Mesenchymal Stem Cells, Skin Transplantation, Wound Healing, Tissue Engineering

CLC Number: