Double network laminarin-boronic/alginate dynamic bioink for 3D bioprinting cell-laden constructs
authors Amaral, AJR; Gaspar, VM; Lavrador, P; Mano, JF
nationality International
journal BIOFABRICATION
author keywords 3D bioprinting; laminarin; boronic acid; alginate; dynamic bioink; double network hydrogel
keywords RAPID FORMATION; BORONIC ACIDS; CROSS-LINKING; HYDROGELS; STRATEGIES; POLYMERS; BINDING; DESIGN
abstract The design of dynamically crosslinked hydrogel bioinks for three-dimensional (3D) bioprinting is emerging as a valuable strategy to advance the fabrication of mechanically tuneable cell-laden constructs for 3D in vitro disease modelling and tissue engineering applications. Herein, a dynamic bioink comprising boronic acid-functionalised laminarin and alginate is explored for bioprinting 3D constructs under physiologically relevant conditions. The formulated bioink takes advantage of a double crosslinked network that combines covalent but reversible boronate ester bonds and ionic gelation via divalent cations. Moreover, it exhibits suitable rheological properties and improved mechanical features owing to its modular crosslinking chemistry, yielding stable constructs with user-programmable architecture. We explored such dynamic bioink as a supporting matrix for different cell classes, namely osteoblast precursors, fibroblasts and breast cancer cells. The resulting cell-laden bioprinted hydrogels display a homogeneous cell distribution post-printing and exceptional cell viability (>90%) that can be maintained for prolonged time periods in culture (14 days) for all cell lines. This simple and chemically versatile approach is envisaged to accelerate the development of multifunctional bioinks and contribute towards the fabrication of biomimetic 3D scaffolds with applicability in a wide range of predictive or exploratory biomedical platforms.
publisher IOP PUBLISHING LTD
issn 1758-5082
isbn 1758-5090
year published 2021
volume 13
issue 3
digital object identifier (doi) 10.1088/1758-5090/abfd79
web of science category 11
subject category Engineering, Biomedical; Materials Science, Biomaterials
unique article identifier WOS:000657105900001
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journal analysis (jcr 2019):
journal impact factor 8.213
5 year journal impact factor 8.251
category normalized journal impact factor percentile 93.55
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