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Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
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Biocompatible hydrogel nanocomposite with covalently embedded silver nanoparticles
Clara García-Astrain1, Cheng Chen2, María Burón3
1†Materials + Technologies Group, Department of Chemical and Environmental Engineering, Polytechnic School, University of the Basque Country, Plaza Europa 1, 20018 San Sebastián, Spain.
Biomacromolecules
|March 19, 2015
Summary
Researchers developed a novel bionanocomposite gelatin hydrogel using silver nanoparticles (Ag NPs). This hybrid material shows enhanced stability and biocompatibility, indicating potential for biomedical applications like implants and drug delivery systems.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Polymer Chemistry
Background:
- Bionanocomposite materials integrate biopolymers and nanostructured materials.
- These materials are promising for biomedical applications including implants, drug delivery, and tissue engineering.
- Silver nanoparticles (Ag NPs) offer unique properties for material functionalization.
Purpose of the Study:
- To prepare a novel bionanocomposite gelatin-based hydrogel.
- To utilize maleimide-coated Ag NPs as co-crosslinkers.
- To investigate the properties and biomedical potential of the resulting hybrid nanocomposite.
Main Methods:
- Synthesis of maleimide-coated Ag NPs.
- Preparation of furan-containing gelatin.
- Crosslinking using Diels-Alder cycloaddition and amide coupling.
- Characterization of mechanical properties (storage moduli), swelling, drug release, biocompatibility, and toxicity.
Main Results:
- A stable and biocompatible bionanocomposite gelatin hydrogel was successfully prepared.
- The incorporation of Ag NPs significantly increased the hydrogel's storage moduli by nearly three times compared to the control.
- The material demonstrated favorable swelling and drug release characteristics.
- Biocompatibility and toxicity tests confirmed the material's suitability for biomedical use.
Conclusions:
- Covalently bound Ag NPs stabilize the gelatin hydrogel matrix.
- The developed bionanocomposite hydrogel exhibits significant potential for biomedical applications.
- This approach offers a versatile platform for designing advanced hybrid biomaterials.
