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3D Bioplotter Research Papers
3D bioprinting of in vitro porous hepatoma models: establishment, evaluation, and anticancer drug testing
Traditional tumor models do not tend to accurately simulate tumor growth in vitro or enable personalized treatment and are particularly unable to discover more beneficial targeted drugs. To address this, this study describes the use of three-dimensional (3D) bioprinting technology to construct a 3D model with human hepatocarcinoma SMMC-7721 cells (3DP-7721) by combining gelatin methacrylate (GelMA) and poly(ethylene oxide) (PEO) as two immiscible aqueous phases to form a bioink and innovatively applying fluorescent carbon quantum dots for long-term tracking of cells. The GelMA (10%, mass fraction) and PEO (1.6%, mass fraction) hydrogel with 3:1 volume ratio offered distinct pore-forming characteristics,…
Double-Side-Coated Grid-Type Mechanical Membrane Biosensor Based on AuNPs Self-assembly and 3D Printing
The membrane based on receptor functionalization provides a new paradigm for the development of mechanical biosensors. However, improvement of sensitivity and test accuracy is still a challenge for mechanical biosensors in practical application. Herein, a surface stress mechanical biosensor (MBioS) based on double-side-gold nanoparticale (AuNP)-coated grid-type polydimethylsiloxane (PDMS) membrane (D-G-MBioS) and 3D printing for human serum albumin (HSA) detection is developed. The surface stress is amplified by the grid coupling sandwich immune structure to improve the sensitivity of the MbioS, successfully reducing limite of detection (LOD) by two orders of magnitude. By self-assembly of AuNPs, the double-side-coated PDMS membrane is…