Journal
APPLIED MATERIALS TODAY
Volume 25, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apmt.2021.101227
Keywords
3D bioprinting; Extrusion-based printing; Bioinks; Non-covalent crosslinking; Novel bioinks
Categories
Funding
- National Natural Science Foundation of China [51973108, 51773113]
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Extrusion-based bioprinting is the most important method for 3D bioprinting, creating living tissues and organs by stacking cells and materials layer by layer. Bioink plays a crucial role in this process, determining cell survival, growth, and organ precision.
Extrusion-based bioprinting (EBB) is the most important printing method for 3D bioprinting creating sub-stitute organs because of its affordability and maneuverability. In bioinks for extrusion bioprinting, cells and materials are stacked layer by layer in a spatially controlled pattern to create living tissues and or-gans. Bioink in the 3D bioprinting process acts as a carrier of the laden cells for printing, is a mixture of cells, biomaterials, and biological active substances, determines the survival rate of the cells to print, cell growth after printing, the precision of the printed organs, the methods to print. According to the cognitive process and design route of bioinks used for extrusion-based bioprinting, the present review introduced (i) concept, development, and basic composition of bioink, (ii) the basis of bioink-materials selection for extrusion printing-general properties, (iii) referential strategies to design bioinks, which implement the extrusion printing process and (iv) new strategies to develop novel bioinks. At last, the paper summarizes the current challenges and the future development trend of bioinks. (c) 2021 Elsevier Ltd. All rights reserved.
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