Galliger Z, Vogt CD, Helms HR, Panoskaltsis-Mortari A. Extracellular Matrix Microparticles Improve GelMA Bioink Resolution for 3D Bioprinting at Ambient Temperature.
Macromol Mater Eng 2022;
307:2200196. [PMID:
36531127 PMCID:
PMC9757590 DOI:
10.1002/mame.202200196]
[Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Indexed: 06/17/2023]
Abstract
Introduction
Current bioinks for 3D bioprinting, such as gelatin-methacryloyl, are generally low viscosity fluids at room temperature, requiring specialized systems to create complex geometries.
Methods and Results
Adding decellularized extracellular matrix microparticles derived from porcine tracheal cartilage to gelatin-methacryloyl creates a yield stress fluid capable of forming self-supporting structures. This bioink blend performs similarly at 25°C to gelatin-methacryloyl alone at 15°C in linear resolution, print fidelity, and tensile mechanics.
Conclusion
This method lowers barriers to manufacturing complex tissue geometries and removes the need for cooling systems.
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