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Effect of Pore Size on Cell Behavior Using Melt Electrowritten Scaffolds
Yu Han1,2, Meifei Lian2,3, Qiang Wu1
1Department of Orthopaedic Surgery, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Frontiers in Bioengineering and Biotechnology
|July 19, 2021
Summary
Scaffold pore size critically impacts tissue repair. Optimal pore sizes vary by cell type, influencing adhesion, proliferation, and differentiation for advanced tissue engineering strategies.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Cell Biology
Background:
- Tissue engineering relies on scaffolds and cells for injured tissue repair.
- Understanding scaffold-cell interactions, particularly pore size effects, is crucial for optimizing strategies.
Purpose of the Study:
- To investigate the influence of melt electrowritten (MEW) scaffold pore size on bone marrow mesenchymal stem cells (BMSCs), chondrocytes (CCs), and tendon stem cells (TCs).
- To determine the optimal pore size for cell adhesion, proliferation, differentiation, and gene expression in different cell types.
Main Methods:
- Preparation of MEW scaffolds with varying pore sizes (50-400 μm).
- Culture of BMSCs, CCs, and TCs on scaffolds with different pore sizes.
- Assessment of cell adhesion, proliferation, viability, differentiation, and gene expression.
Main Results:
- Cell adhesion, proliferation, and viability varied significantly across different cell types and pore sizes.
- BMSCs showed highest viability on 200 μm scaffolds, CCs on 100-200 μm, and TCs on 300 μm scaffolds.
- Scaffolds with 100-200 μm pore sizes enhanced proliferation, chondrogenic gene expression, and cartilage matrix deposition.
Conclusions:
- Scaffold pore size is a critical parameter that dictates cell behavior and differentiation outcomes.
- Optimal scaffold architecture, including pore size, must be tailored to specific cell types and tissue engineering applications.
- These findings advance the development of customized tissue repair strategies.
