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  4. Volumetric Bioprinting of Organoids and Optically Tuned Hydrogels to Build Liver-Like Metabolic Biofactories
 
research article

Volumetric Bioprinting of Organoids and Optically Tuned Hydrogels to Build Liver-Like Metabolic Biofactories

Bernal, Paulina Nunez
•
Bouwmeester, Manon
•
Madrid-Wolff, Jorge  
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March 6, 2022
Advanced Materials

Organ- and tissue-level biological functions are intimately linked to microscale cell-cell interactions and to the overarching tissue architecture. Together, biofabrication and organoid technologies offer the unique potential to engineer multi-scale living constructs, with cellular microenvironments formed by stem cell self-assembled structures embedded in customizable bioprinted geometries. This study introduces the volumetric bioprinting of complex organoid-laden constructs, which capture key functions of the human liver. Volumetric bioprinting via optical tomography shapes organoid-laden gelatin hydrogels into complex centimeter-scale 3D structures in under 20 s. Optically tuned bioresins enable refractive index matching of specific intracellular structures, countering the disruptive impact of cell-mediated light scattering on printing resolution. This layerless, nozzle-free technique poses no harmful mechanical stresses on organoids, resulting in superior viability and morphology preservation post-printing. Bioprinted organoids undergo hepatocytic differentiation showing albumin synthesis, liver-specific enzyme activity, and remarkably acquired native-like polarization. Organoids embedded within low stiffness gelatins (<2 kPa) are bioprinted into mathematically defined lattices with varying degrees of pore network tortuosity, and cultured under perfusion. These structures act as metabolic biofactories in which liver-specific ammonia detoxification can be enhanced by the architectural profile of the constructs. This technology opens up new possibilities for regenerative medicine and personalized drug testing.

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Type
research article
DOI
10.1002/adma.202110054
Web of Science ID

WOS:000765152300001

Author(s)
Bernal, Paulina Nunez
Bouwmeester, Manon
Madrid-Wolff, Jorge  
Falandt, Marc
Florczak, Sammy
Rodriguez, Nuria Gines
Li, Yang
Groessbacher, Gabriel
Samsom, Roos-Anne
van Wolferen, Monique
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Date Issued

2022-03-06

Publisher

Wiley-V C H Verlag Gmbh

Published in
Advanced Materials
Article Number

2110054

Subjects

Chemistry, Multidisciplinary

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Chemistry, Physical

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Nanoscience & Nanotechnology

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Materials Science, Multidisciplinary

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Physics, Applied

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Physics, Condensed Matter

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Chemistry

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Science & Technology - Other Topics

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Materials Science

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Physics

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biofabrication

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bioresins

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hydrogels

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light-based 3d printing

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volumetric additive manufacturing

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culture

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disease

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spheroids

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protein

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bioink

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LAPD  
Available on Infoscience
March 28, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/186695
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