Bioenergetic-active materials enhance tissue regeneration by modulating cellular metabolic state

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Cellular Bioenergetics

Background:

• Cellular bioenergetics (CBE) is crucial for tissue regeneration, with enhanced metabolic states promoting healing.
• Current methods to modulate CBE for treating significant tissue injuries remain limited.

Purpose of the Study:

• To investigate the efficacy of a novel bioenergetic-active material (BAM) scaffold in enhancing bone defect repair.
• To compare BAM scaffold performance against commercialized materials in a rabbit model.

Main Methods:

• Developed a BAM scaffold composed of sustained-release energy-active units.
• Implanted scaffolds in a rabbit model of weight-bearing bone defects.
• Assessed repair enhancement using the BAM scaffold compared to poly(lactic acid) and calcium phosphate ceramic scaffolds.

Main Results:

• The BAM scaffold significantly enhanced induced repair in rabbit bone defects compared to control scaffolds.
• Internalized energy-active units established an intramitochondrial metabolic bypass.
• Elevated mitochondrial membrane potential (ΔΨm) increased bioenergetic levels and accelerated bone formation.

Conclusions:

• The developed BAM scaffold is a highly efficient and readily implementable therapeutic strategy for tissue regeneration.
• This approach shows significant promise for clinical translation in treating substantial bone injuries.
• Modulating cellular bioenergetics via BAM scaffolds accelerates bone formation and repair.