Electrospun PHBV/collagen composite nanofibrous scaffolds for tissue engineering

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Nanotechnology

Background:

• Electrospinning is a key technique for creating nanofibrous structures from extracellular matrix components.
• Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and collagen are promising biomaterials for tissue regeneration.

Purpose of the Study:

• To fabricate and characterize PHBV/collagen nanofibrous scaffolds.
• To evaluate the biocompatibility and tissue engineering potential of these scaffolds.

Main Methods:

• Electrospinning of PHBV and type-I collagen in 1,1,1,3,3,3-hexafluoro-2-isopropanol (HIFP).
• Surface characterization using attenuated total reflection Fourier transform infrared spectroscopy, electron spectroscopy for chemical analysis, and atomic force microscopy.
• Biodegradation studies using PHB depolymerase and type-I collagenase.
• Cell culture experiments with NIH3T3 cells.

Main Results:

• Successfully fabricated PHBV/collagen nanofibrous scaffolds with fiber diameters ranging from 300 to 600 nm.
• Confirmed the presence and integration of both PHBV and collagen components.
• Demonstrated effective biodegradation of both PHBV and collagen.
• Observed significantly accelerated adhesion and growth of NIH3T3 cells on PHBV/collagen scaffolds compared to PHBV scaffolds.

Conclusions:

• The developed PHBV/collagen nanofibrous scaffold is a promising biomaterial for tissue engineering.
• The scaffold supports enhanced cellular response, making it suitable for regenerative medicine applications.