A new method for printing cellularised scaffolds from thermosensitive hydrogels was here proposed. Pluronic F127 solutions and hydrogels in water-based media (15-40 %w/v) were investigated by rheological analysis and tube inverting test. Pluronic F127 hydrogel with 25%w/v concentration was selected as bioink due to its fast gelation at 37°C (5 min), suitable viscoelastic properties (G’= 16500 Pa at 37°C), pseudoplastic behaviour and fast viscosity recovery after shearing (approximately 5 s). Not cellularised and cellularised (with Balb/3T3 fibroblasts) scaffolds with a 0°/90° pattern were fabricated by additive manufacturing technique. Cells were well distributed along scaffold filaments and cell viability was preserved during printing.

Pluronic F127 Hydrogel Characterization and Biofabrication in Cellularized Constructs for Tissue Engineering Applications

Giannitelli SM;Rainer A;Trombetta M;
2016-01-01

Abstract

A new method for printing cellularised scaffolds from thermosensitive hydrogels was here proposed. Pluronic F127 solutions and hydrogels in water-based media (15-40 %w/v) were investigated by rheological analysis and tube inverting test. Pluronic F127 hydrogel with 25%w/v concentration was selected as bioink due to its fast gelation at 37°C (5 min), suitable viscoelastic properties (G’= 16500 Pa at 37°C), pseudoplastic behaviour and fast viscosity recovery after shearing (approximately 5 s). Not cellularised and cellularised (with Balb/3T3 fibroblasts) scaffolds with a 0°/90° pattern were fabricated by additive manufacturing technique. Cells were well distributed along scaffold filaments and cell viability was preserved during printing.
2016
Pluronic F127, rheology, bioprinting, hydrogels, gelation.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12610/16701
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