Summary
Current clinical therapies for traumatic or chronic injuries involving osteochondral tissue result in temporary pain reduction and filling of the defect but with biomechanically inferior repair tissue. Tissue engineering of osteochondral repair tissue using autologous cells and bioactive biomaterials has the potential to overcome the current limitations and results in native-like repair tissue with good integration capabilities. For this reason, we applied two modern biomaterial design techniques, namely, electrospinning and fused deposition modeling (FDM), to produce bioactive poly(ε-caprolactone)/collagen (PCL/Col) type I and type II–PCL-tri-calcium phosphate (TCP)/Col composites for precursor cell-based osteochondral repair. The application of these two design techniques (electrospinning and FDM) allowed us to specifically produce the a suitable three-dimensional (3D) environment for the cells to grow into a particular tissue (cartilage and bone) in vitro prior to in vivo implantation. We hypothesize that our new designed biomaterials, seeded with autologous bone marrow-derived precursor cells, in combination with bioreactor-stimulated cell-culture techniques can be used to produce clinically relevant osteochondral repair tissue.
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Acknowledgments
The authors thank the Electron Microscopy Unit, National University of Singapore, for assistance with the microscopy work. Mr. Tan Kim Cheng (Temaesk Polytechnic, Singapore) for support in the FDM scaffold fabrication.
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Schumann, D., Ekaputra, A.K., Lam, C.X., Hutmacher, D.W. (2007). Biomaterials/Scaffolds. In: Hauser, H., Fussenegger, M. (eds) Tissue Engineering. Methods in Molecular Medicine™, vol 140. Humana Press. https://doi.org/10.1007/978-1-59745-443-8_6
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DOI: https://doi.org/10.1007/978-1-59745-443-8_6
Publisher Name: Humana Press
Print ISBN: 978-1-58829-756-3
Online ISBN: 978-1-59745-443-8
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