Use of a pre-vascularised oral mucosal cell sheet for promoting cutaneous burn wound healing.
Pre-vascularised cell sheets have been used to promote early angiogenesis and graft survival. However, the use of pre-vascularised mucosal cell sheets for burn wounds has been rarely evaluated. Therefore, we examined the applicability of an oral pre-vascularised mucosal cell sheet that we had previously developed for the treatment of cutaneous burn wounds. Methods: Mucosal keratinocytes, fibroblasts, and endothelial progenitor cells were isolated from the oral mucosa and peripheral blood and were expanded in vitro. Mucosal cell sheets were generated by seeding cultured keratinocytes onto a mixture of fibroblasts, endothelial cells, and fibrin. Third-degree burn wounds were created on the backs of rats and were covered with the cell sheets, skin grafts, or silastic sheets as a control. Gross and microscopic findings and gene expression profiles of wounds were compared among the groups. Results: CD31-positive microvessels were observed in the fibrin-matrix layer of the cell sheet. In the cutaneous burn wound model, the cell sheets promoted wound healing, with accelerated wound closure and less scarring than with silastic sheets and skin grafts. The cell sheets had more microvessels and proliferating cells and less neutrophil infiltration and fibrotic features than the controls or skin grafts. The cell sheet induced higher mRNA expression of KRT14, VEGFA, IL10, and AQP3 and lower mRNA expression of TGFB1, IL6, ICAM1, ACTA2, and FN1 than did the controls or skin grafts. Conclusions: The pre-vascularised mucosal cell sheet promotes cutaneous burn wound healing.
['Lee|Jaewang|J|', 'Shin|Daiha|D|', 'Roh|Jong-Lyel|JL|']
D000818:Animals D001773:Blood Cells D002056:Burns D004195:Disease Models, Animal D066026:Endothelial Progenitor Cells D005347:Fibroblasts D020869:Gene Expression Profiling D006651:Histocytochemistry D015603:Keratinocytes D009061:Mouth Mucosa D051381:Rats D016038:Skin Transplantation D023822:Tissue Engineering D016896:Treatment Outcome D014945:Wound Healing
pre-vascularisation cell sheet wound healing oral mucosa Skin