4.6 Article

Two Metabolomics Phenotypes of Human Hepatocellular Carcinoma in Non-Alcoholic Fatty Liver Disease According to Fibrosis Severity

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METABOLITES
卷 11, 期 1, 页码 -

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MDPI
DOI: 10.3390/metabo11010054

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hepatocarcinoma; fibrosis; non-alcoholic fatty liver disease; nuclear magnetic resonance; metabolomics

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  1. Program Canceropole Lyon Auvergne Rhone AlpesOncostarter MECASTEN

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This study identified two metabolic phenotypes of HCC developed in NAFLD based on fibrosis level. HCC-F0F1 showed overexpression of choline derivatives and glutamine, while HCC-F3F4 were characterized by decreased monounsaturated fatty acids, increased saturated fatty acids, and accumulation of branched amino acids. Specific signatures such as differential expression levels of glucose, choline derivatives, phosphoethanolamine, monounsaturated fatty acids, and triacylglycerides were found when comparing HCC-F0F1 and HCC-F3F4.
Non-Alcoholic Fatty Liver Disease (NAFLD) is considered as the forthcoming predominant cause for hepatocellular carcinoma (HCC). NAFLD-HCC may rise in non-cirrhotic livers in 40 to 50% of patients. The aim of this study was to identify different metabolic pathways of HCC according to fibrosis level (F0F1 vs. F3F4). A non-targeted metabolomics strategy was applied. We analyzed 52 pairs of human HCC and adjacent non-tumoral tissues which included 26 HCC developed in severe fibrosis or cirrhosis (F3F4) and 26 in no or mild fibrosis (F0F1). Tissue extracts were analyzed using H-1-Nuclear Magnetic Resonance spectroscopy. An optimization evolutionary method based on genetic algorithm was used to identify discriminant metabolites. We identified 34 metabolites differentiating the two groups of NAFLD-HCC according to fibrosis level, allowing us to propose two metabolomics phenotypes of NAFLD-HCC. We showed that HCC-F0F1 mainly overexpressed choline derivatives and glutamine, whereas HCC-F3F4 were characterized by a decreased content of monounsaturated fatty acids (FA), an increase of saturated FA and an accumulation of branched amino acids. Comparing HCC-F0F1 and HCC-F3F4, differential expression levels of glucose, choline derivatives and phosphoethanolamine, monounsaturated FA, triacylglycerides were identified as specific signatures. Our metabolomics analysis of HCC tissues revealed for the first time two phenotypes of HCC developed in NAFLD according to fibrosis level. This study highlighted the impact of the underlying liver disease on metabolic reprogramming of the tumor.

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