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Chitosan Poly(vinyl alcohol) Methacrylate Hydrogels for Tissue Engineering Scaffolds
Nghia Le Ba Thai1, Henry T Beaman1, Megan Perlman1
1Department of Biomedical and Chemical Engineering, Syracuse Biomaterials Institute, and BioInspired Syracuse: Institute for Material and Living Systems, Syracuse University, Syracuse, New York 13244, United States.
This study presents tunable chitosan-poly(vinyl alcohol) methacrylate hydrogels for tissue engineering. These hybrid scaffolds offer controlled degradation and mechanical properties, supporting cell growth and faster wound healing with antibacterial benefits.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Polymer Chemistry
Background:
- Controlling degradation and mechanical properties of tissue engineering scaffolds is crucial for effective healing and tissue formation.
- Hydrogels mimic the extracellular matrix and are widely used as scaffolds due to their tunable properties.
Purpose of the Study:
- To develop a hybrid natural/synthetic hydrogel platform for tunable tissue engineering scaffolds.
- To investigate the impact of polymer content and photoinitiator type on hydrogel properties.
Main Methods:
- Chitosan and poly(vinyl alcohol) (PVA) were modified with methacrylate groups.
- Chitosan PVA methacrylate hydrogels (ChiPVAMA) were synthesized using Irgacure 2959 (I2959) or lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) as photoinitiators.
- Hydrogel degradation, mechanical properties, cell viability, wound healing, and antibacterial activity were assessed.
Main Results:
- ChiPVAMA hydrogels demonstrated tunable degradation rates and mechanical properties based on polymer content and photoinitiator.
- All hydrogel formulations accelerated wound closure in a 2D scratch assay compared to gauze.
- Encapsulated NIH/3T3 cells maintained high viability (~92%) over 14 days.
- Hydrogels with higher chitosan content exhibited significant antibacterial activity.
Conclusions:
- ChiPVAMA hydrogels offer a tunable and degradable platform for tissue engineering scaffolds.
- These hydrogels support cell growth and exhibit antibacterial properties, making them suitable for various tissue regeneration applications.
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