Modulating the hAM/PCL Biocomposite for Expedited Wound Healing: A Chemical-Free Approach for Boosting Regenerative...

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Tissue Engineering

Background:

• Effective wound dressings are needed to mimic healthy skin microenvironments and prevent infection.
• Cell-based therapies for wound healing are effective but costly and complex.
• Full-thickness skin wounds require advanced treatments for optimal recovery.

Purpose of the Study:

• To fabricate and evaluate composite membranes of human amniotic membrane (hAM) reinforced with polycaprolactone (PCL) for full-thickness skin wound healing.
• To compare the physical, biological, and mechanical properties of PCL/hAM composites with native hAM.
• To assess the efficacy of these composite membranes as wound dressings in promoting skin regeneration.

Main Methods:

• Fabrication of full-thickness skin graft biocomposite membranes: PCL/hAM and PCL/hAM/PCL.
• Characterization of composite membranes for physical, biological, and mechanical properties.
• In vivo wound healing studies using histological and immunohistochemical analyses (COL-1/COL-3, CD-31, TGF-β).

Main Results:

• PCL/hAM and PCL/hAM/PCL composites showed improved stability and delayed degradation compared to native hAM.
• Histological assessment indicated enhanced wound closure and promoted early epidermis and dermis formation with PCL/hAM.
• In vivo studies demonstrated comparable overall wound healing with PCL/hAM to hAM, supported by molecular marker analysis.

Conclusions:

• The PCL/hAM composite membrane offers enhanced stability and wound healing properties.
• This biomaterial provides mechanical strength and self-regenerating capabilities for skin tissue regeneration.
• The facile fabrication of PCL/hAM presents a promising alternative to complex cell-based wound treatments.