Liquid metal based electroconductive artificial periosteum boosts bone regeneration.

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• The periosteum is vital for bone growth and repair.
• Artificial periosteum development is of significant interest.
• Electroconductive materials are crucial for electrical stimulation-enhanced bone regeneration.

Purpose of the Study:

• To create a liquid metal-based electroconductive artificial periosteum.
• To investigate its effect on osteogenic differentiation of bone marrow mesenchymal stem cells (BM-MSCs) with electrical stimulation (ES).
• To evaluate its efficacy in repairing large bone defects when integrated into a decellularized bone matrix (DBM) scaffold.

Main Methods:

• Fabrication of an electroconductive liquid metal (LM) based artificial periosteum scaffold.
• In vitro assessment of LM periosteum with ES on BM-MSC osteogenic differentiation.
• In vivo evaluation of LM periosteum-coated DBM scaffolds with ES in a rabbit radial defect model.

Main Results:

• The electroconductive artificial periosteum exhibited good biocompatibility.
• Combined with ES, it significantly enhanced BM-MSC osteogenic differentiation.
• The electroconductive bone repair scaffold promoted bone integration and regeneration in large bone defects.

Conclusions:

• LM-based electroconductive artificial periosteum is a viable strategy for bone regeneration.
• The combination of this scaffold with ES effectively promotes osteogenic differentiation and bone defect repair.
• This technology offers a promising reference for future bone regeneration applications.