Authors
Serena Duchi, Carmine Onofrillo, Cathal D O’Connell, Romane Blanchard, Cheryl Augustine, Anita F Quigley, Robert MI Kapsa, Peter Pivonka, Gordon Wallace, Claudia Di Bella, Peter FM Choong
Publication date
2017/7/19
Journal
Scientific reports
Volume
7
Issue
1
Pages
1-12
Publisher
Nature Publishing Group
Description
Three-dimensional (3D) bioprinting is driving major innovations in the area of cartilage tissue engineering. Extrusion-based 3D bioprinting necessitates a phase change from a liquid bioink to a semi-solid crosslinked network achieved by a photo-initiated free radical polymerization reaction that is known to be cytotoxic. Therefore, the choice of the photocuring conditions has to be carefully addressed to generate a structure stiff enough to withstand the forces phisiologically applied on articular cartilage, while ensuring adequate cell survival for functional chondral repair. We recently developed a handheld 3D printer called “Biopen”. To progress towards translating this freeform biofabrication tool into clinical practice, we aimed to define the ideal bioprinting conditions that would deliver a scaffold with high cell viability and structural stiffness relevant for chondral repair. To fulfill those criteria, free radical cytotoxicity was …
Scholar articles
S Duchi, C Onofrillo, CD O'Connell, R Blanchard… - Scientific Reports, 2017