Three-dimensional direct cell bioprinting for tissue engineering

Özler, Saime Burçe and Bakırcı, Ezgi and Küçükgül, Can and Koç, Bahattin (2016) Three-dimensional direct cell bioprinting for tissue engineering. Journal of Biomedical Materials Research Part B: Applied Biomaterials . ISSN 1552-4973 (Print) 1552-4981 (Online) Published Online First http://dx.doi.org/10.1002/jbm.b.33768

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Official URL: http://dx.doi.org/10.1002/jbm.b.33768


Bioprinting is a relatively new technology where living cells with or without biomaterials are printed layer-by-layer in order to create three-dimensional (3D) living structures. In this article, novel bioprinting methodologies are developed to fabricate 3D biological structures directly from computer models using live multicellular aggregates. Multicellular aggregates made out of at least two cell types from fibroblast, endothelial and smooth muscle cells are prepared and optimized. A novel bioprinting approach is proposed in order to continuously extrude cylindrical multicellular aggregates through the bioprinter's glass microcapillaries. The multicellular aggregates are first aspirated into a capillary and then compressed to form a continuous cylindrical multicellular bioink. To overcome surface tension-driven droplet formation, the required compression ratio is calculated. Based on the developed bioprinting strategies, multicellular aggregates and their support structures are bioprinted to form 3D tissue constructs with predefined shapes. The effect of the bioprinting process was examined for fusion, cell viability at different compression ratios, and f-actin cytoskeletal organization. The results show that the bioprinted 3D constructs fuse rapidly and have high cell viability after printing.

Item Type:Article
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA164 Bioengineering
R Medicine > R Medicine (General) > R856-857 Biomedical engineering. Electronics. Instrumentation
T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
ID Code:30694
Deposited By:Bahattin Koç
Deposited On:08 Nov 2016 11:23
Last Modified:08 Nov 2016 11:23

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