# Supercritical Carbon Dioxide-Processed Acellular Dermal Matrix Patch for Enhanced Wound Healing

## TL;DR

A new wound healing patch made using supercritical carbon dioxide improves healing by reducing inflammation and boosting tissue regeneration.

## Contribution

A novel acellular dermal matrix patch processed with supercritical CO2 is introduced, showing enhanced wound healing properties.

## Key findings

- The sCO2 ADM patch accelerated wound closure and reduced inflammation in rat models.
- The patch enhanced granulation tissue formation and re-epithelialization with increased collagen deposition.
- Treatment decreased ROS and pro-inflammatory cytokines while upregulating α-SMA, vimentin, and TGF-β1.

## Abstract

Wound healing remains a significant clinical challenge worldwide, and effective management strategies are essential for improving outcomes. This study evaluated SCderm Matrix, a novel acellular dermal matrix (ADM) patch developed using supercritical carbon dioxide (sCO2) processing of human skin tissue. This innovative processing method preserves structural integrity while enhancing biocompatibility, resulting in a patch characterized by porous architecture, uniform thickness, excellent tensile strength, and optical transparency. In vivo wound healing experiments using full-thickness skin wounds in Sprague–Dawley rats demonstrated the patch’s superior performance. Treatment with the sCO2 ADM patch accelerated wound closure, reduced inflammation, and enhanced granulation tissue formation compared to both untreated controls and two commercially available ADM products. Histological analysis revealed improved re-epithelialization and collagen deposition, while molecular and immunohistochemical assessments showed decreased reactive oxygen species (ROS) and pro-inflammatory cytokines. Simultaneously, the treatment upregulated key proliferation and remodeling markers including alpha smooth muscle actin (α-SMA), vimentin, and transforming growth factor beta 1 (TGF-β1). These findings demonstrate that the SCderm Matrix promotes wound healing through multiple mechanisms: modulating inflammatory responses, enhancing antioxidant defenses, and supporting tissue regeneration. The results suggest this biomaterial has significant potential as an effective and versatile solution for clinical wound care applications.