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Maternal high‐fat diet disrupted one‐carbon metabolism in offspring, contributing to nonalcoholic fatty liver disease
Author(s) -
Peng Hui,
Xu Huiting,
Wu Jie,
Li Jiangyuan,
Zhou Yi,
Ding Zehuan,
Siwko Stefan K.,
Yuan Xianglin,
Schalinske Kevin L.,
Alpini Gianfranco,
Zhang Ke K.,
Xie Linglin
Publication year - 2021
Publication title -
liver international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.873
H-Index - 110
eISSN - 1478-3231
pISSN - 1478-3223
DOI - 10.1111/liv.14811
Subject(s) - offspring , biology , endocrinology , medicine , steatosis , fatty liver , nonalcoholic fatty liver disease , lipid metabolism , pregnancy , dna methylation , methionine , gene expression , biochemistry , disease , gene , genetics , amino acid
Background & Aims Pregnant women may transmit their metabolic phenotypes to their offspring, enhancing the risk for nonalcoholic fatty liver disease (NAFLD); however, the molecular mechanisms remain unclear. Methods Prior to pregnancy female mice were fed either a maternal normal‐fat diet (NF‐group, “no effectors”), or a maternal high‐fat diet (HF‐group, “persistent effectors”), or were transitioned from a HF to a NF diet before pregnancy (H9N‐group, “effectors removal”), followed by pregnancy and lactation, and then offspring were fed high‐fat diets after weaning. Offspring livers were analysed by functional studies, as well as next‐generation sequencing for gene expression profiles and DNA methylation changes. Results The HF, but not the H9N offspring, displayed glucose intolerance and hepatic steatosis. The HF offspring also displayed a disruption of lipid homeostasis associated with an altered methionine cycle and abnormal one‐carbon metabolism that caused DNA hypermethylation and L‐carnitine depletion associated with deactivated AMPK signalling and decreased expression of PPAR‐α and genes for fatty acid oxidation. These changes were not present in H9N offspring. In addition, we identified maternal HF diet‐induced genes involved in one‐carbon metabolism that were associated with DNA methylation modifications in HF offspring. Importantly, the DNA methylation modifications and their associated gene expression changes were reversed in H9N offspring livers. Conclusions Our results demonstrate for the first time that maternal HF diet disrupted the methionine cycle and one‐carbon metabolism in offspring livers which further altered lipid homeostasis. CpG islands of specific genes involved in one‐carbon metabolism modified by different maternal diets were identified.