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Archives of Medicine

  • ISSN: 1989-5216
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Design of 3D bio-printed scaffolds for cartilage regeneration

Joint Event On World Congress on Novel Trends and Advances in Biotechnology, Cell & Stem Cell Research & 15th Annual Congress on Pediatrics
November 28-29, 2018 Barcelona, Spain

G Pinilla, J M Baena, P Galvez-Martin and J A Marchal

REGEMAT 3D, Spain

Posters & Accepted Abstracts: Arch Med

Abstract:

Cartilage is a dense connective tissue with limited self-repair properties. Currently, the therapeutic use of autologous or allogenic chondrocytes makes up an alternative therapy to the pharmacological treatment. The design of a bio-printed 3D cartilage with chondrocytes and biodegradable biomaterials offers a new therapeutic alternative able of bridging the limitations of current therapies in the field. We have developed an enhanced printing processes-Injection Volume Filling (IVF) to increase the viability and survival of the cells when working with high temperature thermoplastics without the limitation of the scaffold geometry in contact with cells. We have demonstrated the viability of the printing process using chondrocytes for cartilage regeneration. This development will accelerate the clinical uptake of the technology and overcomes the current limitation when using thermoplastics as scaffolds. An alginate-based hydrogel combined with human chondrocytes (isolated from osteoarthritis patients) was formulated as bioink-A and the polylactic acid as bioink-B. The bioprinting process was carried out with the REGEMAT V1 bio-printer (Regemat 3D, Granada-Spain) through a IVF. The printing capacity of the bio-printing plus the viability and cell proliferation of bio-printed chondrociytes was evaluated after five weeks by confocal microscopy and Alamar Blue Assay (Biorad). Results showed that the IVF process does not decrease the cell viability of the chondrocytes during the printing process as the cells do not have contact with the thermoplastic at elevated temperatures. The viability and cellular proliferation of the bio-printed artificial 3D cartilage increased after 5 weeks. In conclusion, this study demonstrates the potential use of Regemat V1 for 3D bio-printing of cartilage and the viability of bio-printed chondrocytes in the scaffolds for application in regenerative medicine.

Biography :

E-mail:

bd1@regemat3d.com

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