NIR-Responsive Multifunctional Artificial Skin for Regenerative Wound Healing
 May 2024   
in “
 Advanced Functional Materials 
”
 
    NIR‐mFAS  chitosan  silk fibroin hydrogel  epidermal growth factor  EGF  cell migration  cell proliferation  re-epithelialization  neovascularization  polydopamine nanoparticles  PDA‐NPs  BMP4  NIR irradiation  myofibroblasts  CHIR99021  dermal papilla-like cells  hair follicle regeneration  sebaceous gland regeneration  NIR-responsive artificial skin  silk fibroin  dermal papilla cells   
   
   TLDR  The artificial skin promotes better wound healing and skin regeneration.   
  The study presents a multifunctional artificial skin (NIR-mFAS) designed to enhance the regenerative potential of full-thickness wounds. This artificial skin utilizes a chitosan/silk fibroin hydrogel matrix to encapsulate and sustain the release of epidermal growth factor (EGF), promoting cell migration and proliferation for improved re-epithelialization and neovascularization. The inclusion of photothermal responsive polydopamine nanoparticles allows for precise control over the release of BMP4, reducing scarring by inhibiting myofibroblasts. Additionally, the controlled release of CHIR99021 facilitates the conversion of myofibroblasts into dermal papilla-like cells, promoting hair follicle and sebaceous gland regeneration. This innovative system offers a smart therapeutic approach for high-quality wound healing with appendage regeneration, potentially applicable to other treatments requiring coordinated delivery of multiple pharmacological agents.