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• W2902949765 abstract "The in vitro reproduction of three-dimensional (3D) cellular constructs to physiologically mimic human liver is highly desired for drug screening and clinical research. However, the fabrication of a liver-mimetic 3D model using traditional bottom-up technologies is challenging owing to the complex architecture and specific functions of real liver tissue. This work proposes a versatile strategy for spatially assembling gear-like microstructures encapsulating multiple cell types, and reorganizing them into 3D lobule-like micro-architecture with physiological relevance to native liver tissue. Gear-like microstructures were fabricated by photo-crosslinking poly(ethylene glycol) diacrylate (PEGDA) hydrogel mixed with hepatocytes and fibroblasts, in a digital micromirror device (DMD)-based microfluidic channel. The microstructures were assembled through coordinated micromanipulation based on local fluid force, and spatially self-aligned through hydrophilic–hydrophobic interactions into a 3D integrated construct with lobule-like morphology and a perfusable central lumen. The resulting 3D lobule-like constructs allowed long-term co-culture of hepatocytes and fibroblasts with high cell viability. The co-cultured constructs enhanced hepatocyte proliferation and spreading, as well as liver functions including a 50% increase in albumin secretion and urea synthesis. For hepatotoxicity assessment, the 3D lobule-like construct enabled drug perfusion through its built-in lumen for simulation of drug diffusion in the liver, which could improve the response sensitivity and efficiency to hepatotoxic drug. These results demonstrated that this method provides a valuable 3D co-culture model with perfusable lobule-like architecture and physiological functions, which has potential applications in drug discovery and tissue engineering applications." @default.
• W2902949765 created "2018-12-11" @default.
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• W2902949765 date "2018-12-27" @default.
• W2902949765 modified "2023-10-03" @default.
• W2902949765 title "Fabrication of perfusable 3D hepatic lobule-like constructs through assembly of multiple cell type laden hydrogel microstructures" @default.
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• W2902949765 doi "https://doi.org/10.1088/1758-5090/aaf3c9" @default.
• W2902949765 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30523847" @default.
• W2902949765 hasPublicationYear "2018" @default.
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