Journal
DISEASE MODELS & MECHANISMS
Volume 13, Issue 4, Pages -Publisher
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dmm.042663
Keywords
Defatting; Human hepatocytes; Human precision-cut liver slices; Liver transplantation; Steatosis; Triglycerides
Categories
Funding
- Institute of Cardiometabolism and Nutrition (ICAN) [PAP17FATFC]
- Fondation pour la Recherche Medicale [FRM-ARF20170938613]
- Mairie de Paris [R18139DD]
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Normotherrnic perfusion provides a means to rescue steatotic liver grafts, including by pharmacological defatting. In this study, we tested the potential of new drug combinations to trigger detailing in three human culture models, primary hepatocytes with induced steatosis, primary hepatocytes isolated from steatotic liver, and precision-cut liver slices (PCLS) of steatotic liver. Forskolin, L-camitine and a PPAR alpha agonist were all combined with rapamycin, an immunosuppressant that induces autophagy, in a D-FAT cocktail. D-FAT was tested alone or in combination with necrosulfonamide, an inhibitor of mixed lineage kinase domain like pseudokinase involved in necroptosis. Within 24 h, in all three models. D-FAT induced a decrease in triglyceride content by 30%, attributable to an upregulation of genes involved in free fatty acid beta-oxidation and autophagy, and a downregulation of those involved in lipogenesis. Defatting was accompanied by a decrease in endoplasmic reticulum stress and in the production of reactive oxygen species. The addition of necrosulfonamide increased the efficacy of defatting by 8%-12% in PCLS, with a trend towards increased autophagy. In conclusion, culture models, notably PCLS, are insightful to design strategies for liver graft rescue. Defatting can be rapidly achieved by combinations of drugs targeting mitochondrial oxidative metabolism, macro-autophagy and lipogenesis.
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