All-in-one smart dressing for simultaneous angiogenesis and neural regeneration

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Nanotechnology

Background:

• Wound repair and skin appendage regeneration are hindered by inadequate angiogenesis and neural regeneration.
• Current therapeutic strategies often address angiogenesis and neural regeneration separately, limiting effectiveness.
• A combined approach is needed for simultaneous proangiogenic and neuro-regenerative effects in wound healing.

Purpose of the Study:

• To investigate the efficacy of an all-in-one smart dressing (ASD) for simultaneous angiogenesis and neural regeneration.
• To develop a multi-functional hydrogel-based dressing integrating angiogenic and neuro-regenerative therapeutic agents.
• To demonstrate the potential of a novel nanomaterial-drug combination for enhanced wound repair.

Main Methods:

• Development of a light crosslinked hydrogel incorporating zeolite-imidazolate framework 67 with anchored vanadium oxide (VO2@ZIF-67).
• Incorporation of CXCL12, ligustroflavone, and ginsenoside Rg1 for sustained release of therapeutic agents.
• Evaluation of the ASD's ability to stimulate angiogenesis via pH-triggered Co2+ release and neural regeneration through sustained drug delivery.

Main Results:

• The ASD demonstrated on-demand release of Co2+ from VO2@ZIF-67, stimulating angiogenesis.
• Sustained release of CXCL12, ligustroflavone, and ginsenoside Rg1 promoted mesenchymal stem cell recruitment, inhibited senescence, and induced neural differentiation.
• The smart dressing facilitated rapid angiogenesis and nerve regeneration within 17 days.

Conclusions:

• The developed all-in-one smart dressing effectively integrates nanomaterials and multiple drugs for simultaneous angiogenesis and neural regeneration.
• This study provides a proof-of-concept for a novel therapeutic system to overcome limitations in wound repair and regeneration.
• The ASD offers a promising strategy for advanced wound management by addressing critical aspects of tissue repair concurrently.