Related Experiment Video
Updated: Apr 18, 2026
08:46
Implantation of Electrospun Vascular Grafts with Optimized Structure in a Rat Model
Published on: June 27, 2018
8.7K
Engineered small diameter vascular grafts by combining cell sheet engineering and electrospinning technology.
Hyunhee Ahn1, Young Min Ju1, Hironobu Takahashi2
1Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA.
Acta Biomaterialia
|February 3, 2015
Summary
A novel smooth muscle cell sheet technique significantly enhances vascular scaffold development for small-diameter blood vessel tissue engineering. This method ensures high cell seeding efficiency and promotes a mature, functional smooth muscle layer, improving mechanical properties for potential in vivo implantation.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Vascular Biology
Background:
- Tissue engineering aims to create functional small-diameter blood vessels (<5mm) using cells and scaffolds.
- Previous work developed a poly(ε-caprolactone) (PCL) and type I collagen electrospun scaffold mimicking native vessel properties.
Purpose of the Study:
- To investigate the efficacy of a pre-fabricated smooth muscle cell (SMC) sheet combined with electrospun vascular scaffolds.
- To compare SMC sheet integration with conventional cell seeding for enhanced vascular tissue development.
Main Methods:
- Fabrication of vascular scaffolds using electrospinning of PCL and type I collagen.
- Application of a pre-formed SMC sheet onto the vascular scaffold.
- Bioreactor preconditioning of the SMC sheet-combined scaffold.
Main Results:
- The SMC sheet method achieved ~100% cell seeding efficiency.
- The resulting smooth muscle layer showed mature cell-to-cell junctions (connexin 43) and contractile proteins (α-SMA, MLCK).
- Bioreactor preconditioning maintained high cell viability (95.9 ± 2.7%) and improved mechanical properties (tensile strength, elasticity, elongation at break).
Conclusions:
- Combining a pre-fabricated SMC sheet with electrospun vascular scaffolds is a superior method for developing mature vascular tissue.
- This approach enhances cellular organization, mechanical integrity, and potential for in vivo application in vascular reconstruction.
