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Chitosan-gelatin sheets as scaffolds for muscle tissue engineering
Maryam Hajiabbas1, Shohreh Mashayekhan, Amir Nazaripouya
1Department of Urology, Shahid Labbafi Nejad hospital, Urology and Nephrology Research center (UNRC), Shahid Beheshti University of Medical Sciences , Tehran , Iran.
Artificial Cells, Nanomedicine, and Biotechnology
|November 8, 2013
Summary
Chitosan-gelatin hydrogels mimic muscle tissue properties. Intermediate stiffness (22 ± 1kPa) hydrogels best support muscle-derived cell attachment, expansion, and proliferation for urology applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Natural polymers like chitosan (CS) and gelatin (G) are explored for biomaterial development.
- Developing materials with mechanical properties similar to native tissues is crucial for effective tissue regeneration.
- Muscle-derived cells (MDCs) are key components in muscle tissue engineering strategies.
Purpose of the Study:
- To evaluate the impact of polymer concentration and scaffold stiffness on muscle-derived cell behavior on CS-G hydrogels.
- To characterize the physicochemical properties of CS-G hydrogels.
- To identify optimal hydrogel formulations for muscle tissue engineering in urology.
Main Methods:
- Preparation of chitosan-gelatin (CS-G) hydrogels with varying polymer concentrations.
- Characterization of hydrogel mechanical properties, including stiffness.
- Assessment of muscle-derived cell (MDC) viability, attachment, expansion, and proliferation using morphology and MTT assays.
- Fourier transform infrared (FTIR) analysis to confirm polymer interactions.
Main Results:
- CS-G hydrogels exhibited strong intermolecular interactions between chitosan and gelatin.
- Intermediate CS concentrations yielded hydrogels with suitable surgical handling and muscle-like elasticity.
- Hydrogels with intermediate stiffness (22 ± 1kPa) demonstrated superior MDC attachment, expansion, and proliferation.
- Both polymer concentration and scaffold stiffness significantly influenced cell viability.
Conclusions:
- CS-G hydrogels with optimized stiffness show promise for muscle tissue engineering.
- These hydrogels provide a suitable microenvironment for muscle-derived cell growth and function.
- CS-G hydrogels represent a potential candidate for reconstructive urology applications.
