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Nonalcoholic fatty liver disease (NAFLD) is an increasingly prevalent disease that is associated with multiple metabolic disturbances, yet the metabolic pathways underlying its progression are poorly understood. Here we studied metabolic pathways of the human liver across the full histological spectrum of NAFLD. We analyzed whole liver tissue transcriptomics and serum metabolomics data obtained from a large, prospectively enrolled cohort of 206 histologically characterized patients derived from the European NAFLD Registry and developed genome-scale metabolic models (GEMs) of human hepatocytes at different stages of NAFLD. We identified several metabolic signatures in the liver and blood of these patients, specifically highlighting the alteration of vitamins (A, E) and glycosphingolipids, and their link with complex glycosaminoglycans in advanced fibrosis. Furthermore, we derived GEMs and identified metabolic signatures of three common NAFLD-associated gene variants (PNPLA3, TM6SF2 and HSD17B13). The study demonstrates dysregulated liver metabolic pathways which may contribute to the progression of NAFLD. MedRxiv: https://www.medrxiv.org/content/10.1101/2021.02.09.21251354v1.full
MATLAB programs, functions and task file to develop personalized genome-scale metabolic models (GEMs) for the NAFLD patients. Additional dependencies: Requires Cobra toolbox and RAVEN 2.0 suite installed in the MATLAB path.
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