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An ADSC-loaded dermal regeneration template promotes full-thickness wound healing

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机构: [1]Shanghai Jiao Tong Univ, Ruijin Hosp, Shanghai Burn Inst, Dept Burn,Sch Med, Shanghai, Peoples R China [2]Shanghai Jiao Tong Univ, Tongren Hosp, Dept Plast Surg, Sch Med, Shanghai, Peoples R China
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关键词: Adipose-derived stem cells Dermal regeneration template Full-thickness wounds

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Introduction: Full-thickness wounds lead to delayed wound healing and scarring. Adipose-derived stem cell (ADSC) grafting promotes wound healing and minimizes scarring, but the low efficiency of grafting has been a challenge. We hypothesized that loading ADSCs onto a clinically widely used dermal regeneration template (DRT) would improve the efficacy of ADSC grafting and promote full-thickness wound healing. Methods: ADSCs from human adipose tissue were isolated, expanded, and labeled with a cell tracker. Labeled ADSCs were loaded onto the DRT. The viability, the location of ADSCs on the DRT, and the abundance of ADSCs in the wound area were confirmed using CCK8 and fluorescence microscopy. Full- thickness wounds were created on Bama minipigs, which were applied with sham, ADSC, DRT, and ADSC-DRT. Wounds from the four groups were collected at the indicated time and histological analysis was performed. RNA-seq analysis was also conducted to identify transcriptional differences among the four groups. The identified genes by RNA-seq were verified by qPCR. Immunohistochemistry and western blotting were used to assess collagen deposition. In vitro, the supernatant of ADSCs was used to culture fibroblasts to investigate the effect of ADSCs on fibroblast transformation into myofibroblasts. Results: ADSCs were successfully isolated, marked, and loaded onto the DRT. The abundance of ADSCs in the wound area was significantly greater in the ADSC-DRT group than in the ADSC group. Moreover, the ADSC-DRT group exhibited better wound healing with improved re-epithelialization and denser collagen deposition than the other three groups. The RNA-seq results suggested that the application of the integrated ADSC-DRT system resulted in the differential expression of genes mainly associated with extracellular matrix remodeling. In vivo, wounds from the ADSC-DRT group exhibited an earlier increase in type III collagen deposition and alleviated scar formation. ADSCs inhibited the transformation of fibroblasts into myofibroblasts, along with increased levels of CTGF, FGF, and HGF in the supernatant of ADSCs. Wounds from the ADSC-DRT group had up-regulated expressions of CTGF, HGF, FGF, and MMP3. Conclusion: The integral of ADSC-DRT increased the efficacy of ADSC grafting, and promoted full- thickness wound healing with better extracellular matrix remodeling and alleviated scar formation.

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出版当年[2023]版:
大类 | 3 区 环境科学与生态学
小类 | 3 区 工程:生物医学 4 区 细胞与组织工程
最新[2023]版:
大类 | 3 区 环境科学与生态学
小类 | 3 区 工程:生物医学 4 区 细胞与组织工程
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出版当年[2022]版:
Q2 CELL & TISSUE ENGINEERING Q2 ENGINEERING, BIOMEDICAL
最新[2023]版:
Q2 ENGINEERING, BIOMEDICAL Q3 CELL & TISSUE ENGINEERING

影响因子: 最新[2023版] 最新五年平均 出版当年[2022版] 出版当年五年平均 出版前一年[2021版] 出版后一年[2023版]

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第一作者机构: [1]Shanghai Jiao Tong Univ, Ruijin Hosp, Shanghai Burn Inst, Dept Burn,Sch Med, Shanghai, Peoples R China [2]Shanghai Jiao Tong Univ, Tongren Hosp, Dept Plast Surg, Sch Med, Shanghai, Peoples R China
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