Abstract
Bioprinting based on thermal inkjet printing is one of the most attractive enabling technologies for tissue engineering and regeneration. During the printing process, cells, scaffolds , and growth factors are rapidly deposited to the desired two-dimensional (2D) and three-dimensional (3D) locations. Ideally, the bioprinted tissues are able to mimic the native anatomic structures in order to restore the biological functions. In this study, a bioprinting platform for 3D cartilage tissue engineering was developed using a commercially available thermal inkjet printer with simultaneous photopolymerization . The engineered cartilage demonstrated native zonal organization, ideal extracellular matrix (ECM ) composition, and proper mechanical properties. Compared to the conventional tissue fabrication approach, which requires extended UV exposure, the viability of the printed cells with simultaneous photopolymerization was significantly higher. Printed neocartilage demonstrated excellent glycosaminoglycan (GAG) and collagen type II production, which was consistent with gene expression profile. Therefore, this platform is ideal for anatomic tissue engineering with accurate cell distribution and arrangement.
Key words
- Cartilage
- Inkjet printing
- Human mesenchymal stem cells
- Hydrogel
- Photopolymerization
- Tissue engineering
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References
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Acknowledgments
This work was supported by the Fundamental Research Funds for the Central Universities (WUT: 2015IB004, 2017IB004).
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Gao, G., Hubbell, K., Schilling, A.F., Dai, G., Cui, X. (2017). Bioprinting Cartilage Tissue from Mesenchymal Stem Cells and PEG Hydrogel. In: Koledova, Z. (eds) 3D Cell Culture. Methods in Molecular Biology, vol 1612. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-7021-6_28
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DOI: https://doi.org/10.1007/978-1-4939-7021-6_28
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Publisher Name: Humana Press, New York, NY
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