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Published on: December 6, 2012
Porcine radial artery decellularization by high hydrostatic pressure
Jun Negishi1, Seiichi Funamoto1,2, Tsuyoshi Kimura1,2
1Division of Biofunctional Molecules, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Japan.
Journal of Tissue Engineering and Regenerative Medicine
|December 13, 2012
Summary
High hydrostatic pressure (HHP) decellularization of porcine radial arteries created viable vascular grafts. These decellularized arteries remained patent and integrated well after transplantation into rats, showing potential for clinical use.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Decellularized tissues are used clinically as tissue grafts.
- Preserving extracellular matrix integrity is crucial for decellularized tissue function.
- Small-diameter vascular grafts are needed for clinical applications.
Purpose of the Study:
- To evaluate high hydrostatic pressure (HHP) for decellularizing porcine radial arteries for use as vascular grafts.
- To assess the structural, mechanical, and biological properties of HHP-decellularized porcine radial arteries.
- To investigate the in vivo performance of HHP-decellularized porcine radial arteries following xenogeneic transplantation.
Main Methods:
- Porcine radial arteries were decellularized using high hydrostatic pressure (HHP).
- Collagen and elastin structures were analyzed to assess matrix preservation.
- Mechanical properties of decellularized arteries were compared to native arteries.
- HHP-decellularized and native porcine radial arteries were transplanted into rat carotid arteries.
Main Results:
- HHP decellularization preserved the collagen and elastin structures of porcine radial arteries.
- The mechanical properties of HHP-decellularized arteries were similar to native arteries.
- Transplanted HHP-decellularized arteries remained patent and free of thrombosis in rats for two weeks.
- Decellularized grafts were repopulated with recipient endothelial cells and infiltrated by host cells.
Conclusions:
- High hydrostatic pressure (HHP) is an effective method for decellularizing porcine radial arteries while preserving key structural and mechanical properties.
- HHP-decellularized porcine radial arteries demonstrate excellent biocompatibility and patency in a xenogeneic transplantation model.
- These findings support the potential of HHP-decellularized porcine arteries as promising small-diameter vascular grafts for clinical applications.
