Nicorandil-based hydrogel promotes bone defect reconstruction by targeting Hmox1

Area of Science:

• Regenerative Medicine
• Biomaterials Science
• Orthopedic Surgery

Background:

• Clinical application of local drugs for bone healing remains challenging.
• Need for innovative strategies to promote bone regeneration and repair.

Purpose of the Study:

• To construct a nicorandil-based hydrogel for local drug delivery.
• To evaluate the hydrogel's efficacy in promoting bone healing by enhancing angiogenesis and inhibiting osteoclastogenesis.

Main Methods:

• Development of a nicorandil-loaded hydrogel.
• In vitro assessment of effects on osteoclast differentiation and angiogenesis.
• In vivo evaluation of bone defect reconstruction in a preclinical model.
• Mechanistic investigation involving nicorandil targeting of Hmox1.

Main Results:

• The nicorandil hydrogel effectively inhibited osteoclast differentiation in vitro.
• Significant promotion of angiogenesis was observed with the nicorandil hydrogel.
• Enhanced bone formation and defect reconstruction were achieved using the nicorandil hydrogel.
• Nicorandil was identified to directly target Hmox1, with its overexpression promoting bone repair.

Conclusions:

• Nicorandil-based hydrogels represent a promising therapeutic approach for bone defect reconstruction.
• The study provides a novel strategy leveraging angiogenesis and controlled osteoclastogenesis for improved bone healing.
• Targeting Hmox1 offers a potential mechanistic pathway for nicorandil-mediated bone regeneration.