期刊
BIOMACROMOLECULES
卷 10, 期 10, 页码 2729-2739出版社
AMER CHEMICAL SOC
DOI: 10.1021/bm9004194
关键词
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资金
- Canadian Institutes of Health Research-Strategic Training Initiative in Health Research
- Ontario Graduate Scholarship in Science and Technology
- Natural Sciences and Engineering Research Council-Canadian Institutes of Health Research Collaborative [337246-2007/CPG83459]
In tissue engineering, the ability to manipulate scaffold design characteristics is important to achieve functional tissue regeneration. In this study, degradable polar hydrophobic ionic polyurethane (D-PHI) porous scaffolds were synthesized using a lysine-based divinyl oligomer (DVO). Optimization studies on the DVO and D-PHI scaffold synthesis were conducted to maximize isocyanate and methacrylate monomer conversion, respectively. D-PHI scaffold properties were manipulated through the introduction of a lysine-based cross-linker. Specifically, increasing D-PHI cross-linker concentration resulted in an increase of the elastic modulus (0.5-21 MPa), a decrease of the elongation-at-yield (45-5%) and a reduction of scaffold swelling (170-100%). Based on a preliminary study with A10 vascular smooth muscle cells, D-PHI scaffolds demonstrated the ability to support cell adhesion and growth during 2 weeks of culture, suggesting their potential suitability for longer term vascular tissue engineering. The versatility of the D-PHI properties may allow for the tailoring of cell-material interaction and ultimately functional tissue regeneration.
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