TY - JOUR
T1 - Integrative study of diet-induced mouse models of NAFLD identifies PPARα as a sexually dimorphic drug target
AU - Smati, Sarra
AU - Polizzi, Arnaud
AU - Fougerat, Anne
AU - Ellero-Simatos, Sandrine
AU - Blum, Yuna
AU - Lippi, Yannick
AU - Régnier, Marion
AU - Laroyenne, Alexia
AU - Huillet, Marine
AU - Arif, Muhammad
AU - Zhang, Cheng
AU - Lasserre, Frederic
AU - Marrot, Alain
AU - Al Saati, Talal
AU - Wan, Jing Hong
AU - Sommer, Caroline
AU - Naylies, Claire
AU - Batut, Aurelie
AU - Lukowicz, Celine
AU - Fougeray, Tiffany
AU - Tramunt, Blandine
AU - Dubot, Patricia
AU - Smith, Lorraine
AU - Bertrand-Michel, Justine
AU - Hennuyer, Nathalie
AU - Pradere, Jean Philippe
AU - Staels, Bart
AU - Burcelin, Remy
AU - Lenfant, Françoise
AU - Arnal, Jean François
AU - Levade, Thierry
AU - Gamet-Payrastre, Laurence
AU - Lagarrigue, Sandrine
AU - Loiseau, Nicolas
AU - Lotersztajn, Sophie
AU - Postic, Catherine
AU - Wahli, Walter
AU - Bureau, Christophe
AU - Guillaume, Maeva
AU - Mardinoglu, Adil
AU - Montagner, Alexandra
AU - Gourdy, Pierre
AU - Guillou, Hervé
N1 - Publisher Copyright:
© Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021
Y1 - 2021
N2 - We evaluated the influence of sex on the pathophysiology of non-alcoholic fatty liver disease (NAFLD). We investigated diet-induced phenotypic responses to define sex-specific regulation between healthy liver and NAFLD to identify influential pathways in different preclinical murine models and their relevance in humans. Different models of diet-induced NAFLD (high-fat diet, choline-deficient high-fat diet, Western diet or Western diet supplemented with fructose and glucose in drinking water) were compared with a control diet in male and female mice. We performed metabolic phenotyping, including plasma biochemistry and liver histology, untargeted large-scale approaches (liver metabolome, lipidome and transcriptome), gene expression profiling and network analysis to identify sex-specific pathways in the mouse liver. The different diets induced sex-specific responses that illustrated an increased susceptibility to NAFLD in male mice. The most severe lipid accumulation and inflammation/fibrosis occurred in males receiving the high-fat diet and Western diet, respectively. Sex-biased hepatic gene signatures were identified for these different dietary challenges. The peroxisome proliferator-activated receptor α (PPARα) co-expression network was identified as sexually dimorphic, and in vivo experiments in mice demonstrated that hepatocyte PPARα determines a sex-specific response to fasting and treatment with pemafibrate, a selective PPARα agonist. Liver molecular signatures in humans also provided evidence of sexually dimorphic gene expression profiles and the sex-specific co-expression network for PPARα. These findings underscore the sex specificity of NAFLD pathophysiology in preclinical studies and identify PPARα as a pivotal, sexually dimorphic, pharmacological target. NCT02390232.
AB - We evaluated the influence of sex on the pathophysiology of non-alcoholic fatty liver disease (NAFLD). We investigated diet-induced phenotypic responses to define sex-specific regulation between healthy liver and NAFLD to identify influential pathways in different preclinical murine models and their relevance in humans. Different models of diet-induced NAFLD (high-fat diet, choline-deficient high-fat diet, Western diet or Western diet supplemented with fructose and glucose in drinking water) were compared with a control diet in male and female mice. We performed metabolic phenotyping, including plasma biochemistry and liver histology, untargeted large-scale approaches (liver metabolome, lipidome and transcriptome), gene expression profiling and network analysis to identify sex-specific pathways in the mouse liver. The different diets induced sex-specific responses that illustrated an increased susceptibility to NAFLD in male mice. The most severe lipid accumulation and inflammation/fibrosis occurred in males receiving the high-fat diet and Western diet, respectively. Sex-biased hepatic gene signatures were identified for these different dietary challenges. The peroxisome proliferator-activated receptor α (PPARα) co-expression network was identified as sexually dimorphic, and in vivo experiments in mice demonstrated that hepatocyte PPARα determines a sex-specific response to fasting and treatment with pemafibrate, a selective PPARα agonist. Liver molecular signatures in humans also provided evidence of sexually dimorphic gene expression profiles and the sex-specific co-expression network for PPARα. These findings underscore the sex specificity of NAFLD pathophysiology in preclinical studies and identify PPARα as a pivotal, sexually dimorphic, pharmacological target. NCT02390232.
KW - gene expression
KW - lipid metabolism
KW - liver metabolism
KW - nonalcoholic steatohepatitis
UR - http://www.scopus.com/inward/record.url?scp=85104886841&partnerID=8YFLogxK
U2 - 10.1136/gutjnl-2020-323323
DO - 10.1136/gutjnl-2020-323323
M3 - Article
AN - SCOPUS:85104886841
SN - 0017-5749
JO - Gut
JF - Gut
ER -