Extracellular matrix reinforced bioinks for 3D bioprinting human tissue

De Santis, M. M. et al. (2021) Extracellular matrix reinforced bioinks for 3D bioprinting human tissue. Advanced Materials, 33(3), 2005476. (doi: 10.1002/adma.202005476) (PMID:33300242)

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Recent advances in 3D bioprinting allow for generating intricate structures with dimensions relevant for human tissue, but suitable bioinks for producing translationally relevant tissue with complex geometries remain unidentified. Here, a tissue‐specific hybrid bioink is described, composed of a natural polymer, alginate, reinforced with extracellular matrix derived from decellularized tissue (rECM). rECM has rheological and gelation properties beneficial for 3D bioprinting while retaining biologically inductive properties supporting tissue maturation ex vivo and in vivo. These bioinks are shear thinning, resist cell sedimentation, improve viability of multiple cell types, and enhance mechanical stability in hydrogels derived from them. 3D printed constructs generated from rECM bioinks suppress the foreign body response, are pro‐angiogenic and support recipient‐derived de novo blood vessel formation across the entire graft thickness in a murine model of transplant immunosuppression. Their proof‐of‐principle for generating human tissue is demonstrated by 3D bioprinting human airways composed of regionally specified primary human airway epithelial progenitor and smooth muscle cells. Airway lumens remained patent with viable cells for one month in vitro with evidence of differentiation into mature epithelial cell types found in native human airways. rECM bioinks are a promising new approach for generating functional human tissue using 3D bioprinting.

Item Type:Articles
Additional Information:Funding Information: European Research Council. Grant Number: 805361. Deutsches Forschungszentrum für Gesundheit und Umwelt, Helmholtz Zentrum München. Deutsche Zentrum für Lungenforschung. Barncancerfonden. Cancerfonden. Knut och Alice Wallenbergs Stiftelse. H2020 European Research Council. Grant Number: 805361.
Glasgow Author(s) Enlighten ID:Tassieri, Dr Manlio
Authors: De Santis, M. M., Alsafadi, H. N., Tas, S., Bölükbas, D. A., Prithiviraj, S., Da Silva, I. A.N., Mittendorfer, M., Ota, C., Stegmayr, J., Daoud, F., Königshoff, M., Swärd, K., Wood, J. A., Tassieri, M., Bourgine, P. E., Lindstedt, S., Mohlin, S., and Wagner, D. E.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Advanced Materials
ISSN (Online):1521-4095
Published Online:09 December 2020
Copyright Holders:Copyright © 2020 The Authors
First Published:First published in Advanced Materials 33(3): 2005476
Publisher Policy:Reproduced under a Creative Commons license

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