Wound Microenvironment Self-Adjusting Hydrogels with Thermo-Sensitivity for Promoting Diabetic Wound Healing.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Wound Healing

Background:

• Chronic diabetic wounds present significant clinical challenges in skin injury repair.
• Conventional wound dressings have limited ability to regulate the wound microenvironment, hindering healing.
• Effective strategies are needed to create self-adjusting wound microenvironments for enhanced healing.

Purpose of the Study:

• To design and develop a thermo-sensitive, drug-controlled hydrogel for self-adjusting wound microenvironments.
• To investigate the hydrogel's ability to promote skin regeneration and wound healing in diabetic patients.
• To evaluate the hydrogel's biocompatibility and smart drug release properties.

Main Methods:

• Fabrication of a thermo-sensitive hydrogel using sodium alginate (SA), Antheraeapernyi silk gland protein (ASGP), and poly(N-isopropylacrylamide) (PNIPAM).
• Characterization of the hydrogel's thermo-responsive drug release mechanism based on lower critical solution temperature (LCST).
• In vitro assessment of hydrogel biocompatibility, including adhesion and proliferation of human skin fibroblast cells.

Main Results:

• The developed hydrogel exhibits thermo-sensitive properties, enabling controlled drug and water molecule expulsion upon temperature increase.
• The incorporation of ASGP enhances hydrogel biocompatibility and adhesion properties.
• In vitro studies confirmed good biocompatibility and promotion of human skin fibroblast cell adhesion and proliferation.

Conclusions:

• This thermo-sensitive drug-controlled hydrogel offers a promising approach for managing chronic diabetic wounds.
• The self-adjusting microenvironment created by the hydrogel facilitates intelligent drug release and promotes skin regeneration.
• This innovative biomaterial has the potential to significantly improve clinical outcomes in wound repair.