Background Chronic and acute wounds pose major challenges in clinical practice. Current treatments offer therapeutic benefits but are limited by high cost, technical complexity, and limited availability. The acellular adipose matrix (AAM), derived from decellularized human adipose tissue, contains extracellular matrix components and bioactive molecules that may promote tissue repair and angiogenesis. In this study, we evaluated the therapeutic potential of AAM in promoting wound healing in a murine model. Methods Human abdominal adipose tissue was processed into AAM through mechanical, chemical, and enzymatic decellularization. Bilateral full-thickness dorsal wounds (1 cm in diameter) were created in nude mice. The control group received an antibiotic ointment, while the experimental group received AAM. Wound closure was monitored for 16 days. Histological and immunofluorescence analyses were performed to assess epithelialization, collagen remodeling, and angiogenesis. Statistical analysis was performed using the Mann–Whitney U test, with p < 0.05 considered significant. Results The AAM-treated group exhibited faster epithelial coverage and granulation tissue formation than the control group. The mean healing time was significantly shorter in the AAM group (9.0 ± 1.67 days) compared with controls (12.0 ± 1.79 days). CD31 staining confirmed the presence of dense microvascular networks and significantly enhanced angiogenesis. Collagen fibers were evenly organized without abnormal fibrosis in both groups. Conclusions AAM effectively enhanced wound regeneration and angiogenesis in vivo. Its biological activity, accessibility, and potential for cost-effective production suggest that AAM may serve as a clinically applicable “off-the-shelf” biomaterial for wound management in both reconstructive and aesthetic surgeries. No Level Assigned This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors <a href="http://www.springer.com/00266">www.springer.com/00266</a>.

Effect of Acellular Adipose Matrix on Wound Regeneration in a Murine Model

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2026年5月21日

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Jaewoo Kim,
Vinh Vuong The Tran,
Dongjian Li,
Jinil Choi,
Hak Chang,
Ki Yong Hong

摘要

Background

Chronic and acute wounds pose major challenges in clinical practice. Current treatments offer therapeutic benefits but are limited by high cost, technical complexity, and limited availability. The acellular adipose matrix (AAM), derived from decellularized human adipose tissue, contains extracellular matrix components and bioactive molecules that may promote tissue repair and angiogenesis. In this study, we evaluated the therapeutic potential of AAM in promoting wound healing in a murine model.

Methods

Human abdominal adipose tissue was processed into AAM through mechanical, chemical, and enzymatic decellularization. Bilateral full-thickness dorsal wounds (1 cm in diameter) were created in nude mice. The control group received an antibiotic ointment, while the experimental group received AAM. Wound closure was monitored for 16 days. Histological and immunofluorescence analyses were performed to assess epithelialization, collagen remodeling, and angiogenesis. Statistical analysis was performed using the Mann–Whitney U test, with p < 0.05 considered significant.

Results

The AAM-treated group exhibited faster epithelial coverage and granulation tissue formation than the control group. The mean healing time was significantly shorter in the AAM group (9.0 ± 1.67 days) compared with controls (12.0 ± 1.79 days). CD31 staining confirmed the presence of dense microvascular networks and significantly enhanced angiogenesis. Collagen fibers were evenly organized without abnormal fibrosis in both groups.

Conclusions

AAM effectively enhanced wound regeneration and angiogenesis in vivo. Its biological activity, accessibility, and potential for cost-effective production suggest that AAM may serve as a clinically applicable “off-the-shelf” biomaterial for wound management in both reconstructive and aesthetic surgeries.

No Level Assigned

This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.