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Tri-layered Electrospinning to Mimic Native Arterial Architecture using Polycaprolactone, Elastin, and Collagen: A Preliminary Study
Published on: January 4, 2011
Study on chitosan/polycaprolactone blending vascular scaffolds by electrospinning
Wenjing Yang1, Jing Fu, Daxin Wang
1State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China.
Journal of Biomedical Nanotechnology
|December 25, 2010
Summary
Chitosan/polycaprolactone (CS/PCL) vascular scaffolds exhibit a stable, porous micro/nano structure, promoting endothelial progenitor cell (EPC) adhesion and growth for potential vascular tissue engineering applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Vascular graft development requires materials mimicking natural extracellular matrix.
- Combining chitosan (CS) and polycaprolactone (PCL) offers synergistic properties for enhanced scaffold performance.
Purpose of the Study:
- To fabricate and characterize CS/PCL electrospun vascular scaffolds.
- To evaluate the biocompatibility and cell growth promotion of these scaffolds for endothelial progenitor cells (EPCs).
Main Methods:
- Electrospinning of CS/PCL blends at various mass ratios.
- Ethanol treatment for scaffold stabilization and characterization using SEM and universal testing machine.
- In vitro culture of EPCs on scaffolds, assessing adhesion rates and cell growth via fluorescence microscopy.
Main Results:
- CS/PCL scaffolds displayed stable, porous micro/nano structures similar to the natural extracellular matrix.
- Optimal CS to PCL ratio (0.5) yielded scaffolds with 31.64% breaking elongation and good elastic deformation.
- EPC adhesion reached 95.1% within 24 hours, with significant cell growth observed after 72 hours.
Conclusions:
- CS/PCL electrospun vascular scaffolds demonstrate promising mechanical properties and biocompatibility.
- The micro/nano architecture and composition support robust EPC adhesion and proliferation, indicating potential for vascular tissue engineering.
