Cited by 128Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismLipid metabolism and biosynthesis

Oxidative stress inhibits healthy adipose expansion through suppression of SREBF1-mediated Lipogenic pathway

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Okuno, Yosuke, Fukuhara, Atsunori, Hashimoto, Erika, Kobayashi, Hironori, Kobayashi, Sachiko, Otsuki, Michio, Shimomura, Iichiro·2018·Diabetes

Abstract

Recent studies have emphasized the association of adipose oxidative stress (Fat reactive oxygen species [ROS]) with the pathogenesis of metabolic disorders in obesity. However, the causal roles of Fat ROS in metabolic disturbances in vivo remain unclear because no mouse model has been available in which oxidative stress is manipulated by targeting adipocytes. In this research, we generated two models of Fat ROS–manipulated mice and evaluated the metabolic features in diet-induced obesity. Fat ROS–eliminated mice, in which Cat and Sod1 were overexpressed in adipocytes, exhibited adipose expansion with decreased ectopic lipid accumulation and improved insulin sensitivity. Conversely, Fat ROS–augmented mice, in which glutathione was depleted specifically in adipocytes, exhibited restricted adipose expansion associated with increased ectopic lipid accumulation and deteriorated insulin sensitivity. In the white adipose tissues of these mice, macrophage polarization, tissue fibrosis, and de novo lipogenesis were significantly changed. In vitro approaches identified KDM1A-mediated attenuation of sterol-regulatory element-binding transcription factor 1 (SREBF1) transcriptional activities as the underlying mechanism for the suppression of de novo lipogenesis by oxidative stress. Thus, our study uncovered the novel roles of Fat ROS in healthy adipose expansion, ectopic lipid accumulation, and insulin resistance, providing the possibility for the adipocyte-targeting antioxidant therapy.

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Crossref · 10.2337/db17-1032

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  • Numerous scientific investigations have substantiated a robust correlation between hyperlipidemia and oxidative stress, with oxidative stress assuming a pivotal role in the development of metabolic disorders.

    “Numerous scientific investigations have substantiated a robust correlation between hyperlipidemia and oxidative stress, with oxidative stress assuming a pivotal role in the development of metabolic disorders (Le Lay et al., 2014; Okuno et al., 2018; Raut and Khullar, 2023).”

    From Lactiplantibacillus plantarum N4 ameliorates lipid metabolism and gut microbiota structure in high fat diet-fed rats (2024) · cites this paper as Okuno et al., 2018

    The Discussion (page unavailable) reports that increased adipose oxidative stress led to ectopic lipid accumulation and worsened insulin sensitivity in mice, supporting a role in metabolic dysfunction. The paper does not establish the claimed robust correlation between hyperlipidemia and oxidative stress; ectopic lipid accumulation is not the same as elevated blood lipids. (LLM, conf=0.85)

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Authors
Okuno, Y., Fukuhara, A., Hashimoto, E., Kobayashi, H., Kobayashi, S., Otsuki, M., & Shimomura, I.
Affiliations
The University of Osaka (JP)
Corresponding author
Fukuhara, Atsunori
Venue
Diabetes
Published
2018-04-04
Volume
67
Issue
6
Pages
1113-1127
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2796021090
Cited by
124
References
56
Citations by year
2026: 6 · 2025: 14 · 2024: 11 · 2023: 14 · 2022: 18 · 2021: 24 · 2020: 18 · 2019: 15 · 2018: 4
FWCI
11.89
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Japan Society for the Promotion of Science (KAKENHI grant #24591329)
  • Japan Foundation for Applied Enzymology (grant)
  • Japan Health Foundation
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
reactive oxygen species, adipose tissue expansion, de novo lipogenesis, SREBF1, LSD1, insulin resistance, ectopic fat deposition, diet-induced obesity, macrophage polarization, adipose tissue fibrosis
MeSH terms
Animals, Crosses, Genetic, Humans, Insulin Resistance, Macrophage Activation, Mice, Transgenic, Obesity, Specific Pathogen-Free Organisms, Biomarkers, Gene Expression Regulation, Enzymologic, Mice, Knockout, Oxidative Stress, RNA Interference, 3T3-L1 Cells, Lipogenesis, Adipogenesis, Mice, Rats, Sterol Regulatory Element Binding Protein 1, Adipose Tissue, White, Histone Demethylases, Diet, Western

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