Dual MOF-engineered 3D-printed alginate-based hydrogels for enhanced wound regeneration.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Nanotechnology

Background:

• Single metal-organic frameworks (MOFs) in hydrogels have limitations for rapid wound healing.
• Diverse MOF functionalities are needed to accelerate complete wound recovery.
• 3D printing offers customization for advanced wound dressing applications.

Purpose of the Study:

• To develop 3D-printed hydrogels incorporating dual MOFs (ZIF-8 and MIL-100 (Fe)) for enhanced wound healing.
• To investigate the comparative wound healing performance of single versus dual MOF formulations.
• To assess the therapeutic potential of these advanced wound dressings.

Main Methods:

• Fabrication of customized hydrogels using a novel 3D printing approach.
• Incorporation of dual MOFs (ZIF-8 and MIL-100 (Fe)) into the hydrogel matrix.
• Evaluation of wound healing efficacy in animal trauma models, including antibacterial, biocompatibility, anti-inflammatory, and angiogenesis assessments via immunohistochemical (IHC) staining.

Main Results:

• All hydrogel formulations demonstrated potent antibacterial activity, high water content, and excellent biocompatibility.
• The dual MOF (D-MOF) hydrogel facilitated complete wound healing by day 14 in animal models.
• IHC staining confirmed that the D-MOF hydrogel effectively reduced inflammation and promoted angiogenesis.

Conclusions:

• 3D-printed dual MOF-modified hydrogels represent a significant advancement in wound healing therapeutics.
• The ability to synthesize various MOFs in situ within the hydrogel offers a versatile platform for wound repair.
• This novel wound dressing shows promising potential for accelerating healing and improving patient outcomes.