Extrusion-Based 3D Printing of Photocurable Hydrogels in Presence of Flavin Mononucleotide for Tissue Engineering

3D printing became a widely used technique for tissue engineering applications. This additive technology enables easy fabrication of very complicated structures. However, selection and preparation of initial compositions for 3D printing satisfying high biocompatibility and processability requirements still remains challenging. One of the most promising materials for mimicking of the living tissues are hydrogels possessing properties close to native tissues. In this work, the printability of hydrogels based on hyaluronic acid and poly(ethylene glycol) derivatives dissolved in phosphate buffer saline in presence of flavin mononucleotide as an endogenous photosensitizer has been studied. To produce a hydrogel pattern, the extrusion of photocurable composition has been combined with its simultaneous photoinduced crosslinking under laser irradiation at 450 nm. Cytotoxicity of fabricated films and 3D scaffolds has been tested in vitro using human fibroblasts BJ-5ta.

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Savelyev A.G., Sochilina A.V., Akasov R.A., Mironov A.V., Semchishen V.A., Generalova A.N., Khaydukov E.V., Popov V.K. Extrusion-Based 3D Printing of Photocurable Hydrogels in Presence of Flavin Mononucleotide for Tissue Engineering. Sovremennye tehnologii v medicine 2018; 10(1): 88, https://doi.org/10.17691/stm2018.10.1.11