ECM Decorated Electrospun Nanofiber for Improving Bone Tissue Regeneration.

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Nanofiber scaffolds are crucial for bone tissue engineering.
• Surface modification of nanofibers can improve their biological performance.
• Extracellular matrix (ECM) plays a vital role in cell behavior and tissue formation.

Purpose of the Study:

• To develop a facile method for decorating electrospun nanofibers with ECM.
• To evaluate the impact of ECM decoration on nanofiber properties and biological activity.
• To assess the efficacy of ECM-decorated nanofibers for bone tissue engineering applications.

Main Methods:

• Fabrication of poly(L-lactic acid) (PLLA) nanofibers via electrospinning.
• Seeding PLLA nanofibers with MC3T3-E1 cells to harvest ECM.
• Decellularization to obtain ECM-coated PLLA nanofibers (ECM/PLLA NF).
• Assessment of ECM preservation, nanostructure, and biological activity using mBMSCs.

Main Results:

• Successful preservation of ECM on PLLA nanofiber surfaces while maintaining nanostructure.
• ECM-decorated nanofibers demonstrated enhanced mBMSC adhesion, proliferation, and osteogenic differentiation.
• mBMSCs on ECM/PLLA NF showed healthier morphology, faster proliferation, and more robust osteogenic differentiation compared to bare PLLA NF.

Conclusions:

• ECM decoration is an effective strategy to enhance the performance of electrospun nanofibers for bone tissue engineering.
• ECM/PLLA NF shows significant potential for promoting bone regeneration.
• This approach offers a promising avenue for developing advanced biomaterials for regenerative medicine.