Bioactive nanocomposite PLDL/nano-hydroxyapatite electrospun membranes for bone tissue engineering

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Nanotechnology

Background:

• Developing bioactive materials is crucial for bone regeneration.
• Electrospinning offers a versatile method for creating nanofibrous scaffolds.
• Nano-hydroxyapatite (n-HAp) is a key component for bone cell signaling.

Purpose of the Study:

• To fabricate novel nanocomposite membranes with enhanced bioactivity.
• To investigate the effect of nano-hydroxyapatite (n-HAp) incorporation on membrane properties.
• To evaluate the in vitro biological response of the nanocomposite membranes.

Main Methods:

• Electrospinning of poly(L/DL)-lactide and n-HAp.
• Characterization using SEM, FTIR, and XRD.
• In vitro mineralization studies in Simulated Body Fluid (SBF).
• In vitro cell culture studies (attachment, proliferation, differentiation).

Main Results:

• Successful incorporation of n-HAp into electrospun fibers confirmed.
• Enhanced in vitro mineralization with continuous apatite layer formation in SBF.
• Significant improvement in osteoblast attachment, proliferation, and differentiation.
• Alkaline Phosphatase and OsteoImage assays confirmed stimulated osteogenic activity.

Conclusions:

• The developed nanocomposite membranes exhibit high bioactivity.
• Nano-hydroxyapatite (n-HAp) incorporation is critical for mineralization and osteogenic differentiation.
• These findings support the potential of these membranes in bone tissue engineering.