Cited by 581Redox biology and oxidative stressMetabolism, Diabetes, and CancerProtein Tyrosine Phosphatases

Reactive oxygen species enhance insulin sensitivity

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Loh, Kim, Deng, Haiyang, Fukushima, Atsushi, Cai, Xiaochu, Boivin, Benoit, Galic, Sandra, Bruce, Clinton, Shields, Benjamin J. +11 more·2009·Cell Metabolism

Abstract

Chronic reactive oxygen species (ROS) production by mitochondria may contribute to the development of insulin resistance, a primary feature of type 2 diabetes. In recent years it has become apparent that ROS generation in response to physiological stimuli such as insulin may also facilitate signaling by reversibly oxidizing and inhibiting protein tyrosine phosphatases (PTPs). Here we report that mice lacking one of the key enzymes involved in the elimination of physiological ROS, glutathione peroxidase 1 (Gpx1), were protected from high-fat-diet-induced insulin resistance. The increased insulin sensitivity in Gpx1(-/-) mice was attributed to insulin-induced phosphatidylinositol-3-kinase/Akt signaling and glucose uptake in muscle and could be reversed by the antioxidant N-acetylcysteine. Increased insulin signaling correlated with enhanced oxidation of the PTP family member PTEN, which terminates signals generated by phosphatidylinositol-3-kinase. These studies provide causal evidence for the enhancement of insulin signaling by ROS in vivo.

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Crossref · 10.1016/j.cmet.2009.08.009

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Authors
Loh, K., Deng, H., Fukushima, A., Cai, X., Boivin, B., Galic, S., Bruce, C., Shields, B. J., Skiba, B., Ooms, L. M., Stepto, N., Wu, B., Mitchell, C. A., Tonks, N. K., Watt, M. J., Febbraio, M. A., Crack, P. J., Andrikopoulos, S., & Tiganis, T.
Affiliations
  • Monash University (AU)
  • Baker Heart and Diabetes Institute (AU)
  • Cold Spring Harbor Laboratory (US)
  • The University of Melbourne (AU)
Corresponding author
Tiganis, Tony
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2009-10
Volume
10
Issue
4
Pages
260-272
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2032172473
Cited by
581
References
48
Citations by year
2026: 12 · 2025: 17 · 2024: 27 · 2023: 22 · 2022: 28 · 2021: 36 · 2020: 24 · 2019: 24 · 2018: 42 · 2017: 36 · 2016: 51 · 2015: 34 · 2014: 50 · 2013: 56 · 2012: 43
FWCI
16.12
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Victoria University Research Repository (Victoria University) (submittedVersion)
Funders
  • National Cancer Institute (R37CA053840, R01CA053840, CA53840)
  • National Institute of General Medical Sciences (GM55989, R01GM055989)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
Keywords
reactive oxygen species, insulin sensitivity, insulin resistance, type 2 diabetes, glutathione peroxidase 1, protein tyrosine phosphatase, phosphatidylinositol 3-kinase/Akt signaling, muscle glucose uptake, high-fat diet, N-acetylcysteine, mitochondrial reactive oxygen species
MeSH terms
Glutathione Peroxidase GPX1, Acetylcysteine, Animals, Antioxidants, Cells, Cultured, Energy Metabolism, Female, Glutathione Peroxidase, Humans, Insulin, Insulin Resistance, Male, Motor Activity, Obesity, Oxidation-Reduction, Signal Transduction, Reactive Oxygen Species, Mice, Knockout, Phosphatidylinositol 3-Kinases, Proto-Oncogene Proteins c-akt, PTEN Phosphohydrolase, Mice

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