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Photo-/thermo-responsive bioink for improved printability in extrusion-based bioprinting. | LitMetric

Photo-/thermo-responsive bioink for improved printability in extrusion-based bioprinting.

Mater Today Bio

Department of Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea.

Published: April 2024

AI Article Synopsis

Article Abstract

Extrusion-based bioprinting has demonstrated significant potential for manufacturing constructs, particularly for 3D cell culture. However, there is a greatly limited number of bioink candidates exploited with extrusion-based bioprinting, as they meet the opposing requirements for printability with indispensable rheological features and for biochemical functionality with desirable microenvironment. In this study, a blend of silk fibroin (SF) and iota-carrageenan (CG) was chosen as a cell-friendly printable material. The SF/CG ink exhibited suitable viscosity and shear-thinning properties, coupled with the rapid sol-gel transition of CG. By employing photo-crosslinking of SF, the printability with Pr value close to 1 and structural integrity of the 3D constructs were significantly improved within a matter of seconds. The printed constructs demonstrated a Young's modulus of approximately 250 kPa, making them suitable for keratinocyte and myoblast cell culture. Furthermore, the high cell adhesiveness and viability (maximum >98%) of the loaded cells underscored the considerable potential of this 3D culture scaffold applied for skin and muscle tissues, which can be easily manipulated using an extrusion-based bioprinter.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10844750PMC
http://dx.doi.org/10.1016/j.mtbio.2024.100973DOI Listing

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