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Self-Assembled Hydrogel Membranes with Structurally Tunable Mechanical and Biological Properties
Rasha M Abdel-Rahman1,2, A M Abdel-Mohsen1,2,3, Jana Frankova4
1CEITEC-Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, Brno 61200, Czech Republic.
Biomacromolecules
|May 13, 2024
Summary
This study introduces a novel method for creating layered hydrogel membranes (LHMs) using protein and polysaccharide nanocomposites. These advanced materials demonstrate enhanced mechanical strength and biocompatibility for potential medical applications.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Supramolecular Chemistry
Background:
- Supramolecular self-assembled nanocomposites from proteins and polysaccharides offer unique properties like biodegradability and tunable multifunctionality.
- Reproducible fabrication of these advanced materials remains a significant challenge in the field.
- Tropocollagen and chitin nanocrystals are promising components for developing novel biomaterials.
Purpose of the Study:
- To develop a reproducible evaporation-induced self-assembly method for creating layered hydrogel membranes (LHMs).
- To investigate the synergistic effects of tropocollagen (CO) and chitin nanocrystals (ChNCs) on material properties.
- To evaluate the potential of these LHMs for controlled drug release and tissue regeneration applications.
Main Methods:
- Fabrication of LHMs using tropocollagen grafted by partially deacetylated chitin nanocrystals (CO-g-ChNCs) via evaporation-induced self-assembly.
- Characterization of the hierarchical microstructure and mechanical properties of the developed LHMs.
- Assessment of cytocompatibility using normal human dermal fibroblast (NHDF) and human osteosarcoma cell line (Saos-2) cells.
- Evaluation of controlled drug release using octenidine dihydrochloride (OCT) as a model drug.
Main Results:
- The developed method successfully produced LHMs with improved mechanical properties (modulus, strength, toughness) compared to native tropocollagen.
- Chitin nanocrystals stabilized tropocollagen's structure, forming a hierarchical microstructure.
- Enhanced cytocompatibility and cell adhesion were observed with the incorporation of ChNCs.
- The LHMs demonstrated controlled release of octenidine dihydrochloride.
Conclusions:
- The novel evaporation-induced self-assembly method provides a reproducible route to fabricate advanced protein-polysaccharide nanocomposite LHMs.
- The synergistic interaction between tropocollagen and chitin nanocrystals significantly enhances material performance.
- These LHMs show great promise for biomedical applications, including controlled drug delivery and bone/skin tissue regeneration.
