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S4 Data -

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NIAID Data Ecosystem2026-05-02 收录
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https://figshare.com/articles/dataset/S4_Data_-/27920319
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Engineering 3D tissue-like constructs for applications such as regenerative medicine remains a major challenge in biomedical research. Recently, self-healing, viscoplastic fluids have been introduced as suspension media to allow lower viscosity, water-rich bioinks to be printed within them for the fabrication of more biomimetic structures. Here, we present gellan gum granular gels produced through the application of shear during gelation, as a candidate suspension medium. We demonstrate that these granular gels exhibit viscoplasticity over a wide range of temperatures, permitting their use for 3D bioprinting of filaments and droplets at low (4°C) as well as physiological temperatures. These granular gels exhibit very low yield stresses (down to 0.4 Pa) which facilitated printing at print speeds up to 60 mm.s-1. Furthermore, we demonstrate the printing of cell-laden droplets maintained over 7 days to show the potential for multiple days of cell culture, as well as the fabrication of hydrogel features within a crosslinkable version of the suspension medium containing granular gellan gum and gelatine-methacryloyl. The combination of ease of preparation, high printing speed, wide temperature tolerance, and crosslinkability makes this gellan gum sheared through cooling-induced gelation an attractive candidate for suspended biofabrication.
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2024-11-27
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