Experimental research on ADSCs-NCSS in wound repair

Zhang,Ai-Jun; Jiang,Tao; Li,Qiang; Jin,Pei-Sheng; Tan,Qian

doi:10.3892/etm.2018.6756

Experimental research on ADSCs-NCSS in wound repair

Authors:
- Ai-Jun Zhang
- Tao Jiang
- Qiang Li
- Pei-Sheng Jin
- Qian Tan
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Affiliations: Department of Burns and Plastic Surgery, The Drum Tower Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China, Department of Burn and Plastic Surgery, Xuzhou Central Hospital, Xuzhou, Jiangsu 221000, P.R. China, Department of Plastic Surgery, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221005, P.R. China
Published online on: September 18, 2018 https://doi.org/10.3892/etm.2018.6756
Pages: 4429-4436
Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

New collagen sponge scaffold (NCSS) combined with adipose‑derived stem cells (ADSCs) in the repair of full-thickness skin wound in nude mice was investigated. Human ADSCs were extracted via enzyme digestion; NCSS materials were prepared using modified method; the tissue-engineered skin substitute was constructed using ADSCs combined with NCSS. Two 10 mm2 full-thickness skin wounds were designed on the back of 24 female nude mice, respectively. Mice were divided into 4 groups in the experiment: ADSCs-NCSS (group A), simple NCSS (group B), simple ADSCs (group C) and blank control (group D). The wound healing rates were observed at 3, 7, 10 and 14 days after operation, and specimens were taken at 1 and 2 weeks for histological detection and immunohistochemical cluster of differentiation 31 (CD31) vascular density detection, respectively. At 3 and 7 days after construction of new tissue-engineered skin substitute, the infiltration of ADSCs could be seen within NCSS. The wound healing rates at 7, 10 and 14 days after operation in group A were (77.13±1.25%), (89.90±1.08%) and (96.08±0.6%), respectively, which were significantly higher than those in groups B-D; the differences were statistically significant (p<0.05). The detection of regenerated wound tissue thickness at 1 and 2 weeks after operation and CD31 vascular density at 1 week after operation showed that the vascular density in the wound in group A was significantly higher than those in other groups; the differences were statistically significant (p<0.05). After the transplantation of tissue-engineered skin constructed by human ADSCs combined with NCSS, the quality of wound healing in nude mice can be significantly improved, and the wound repair can be promoted.

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