Cited by 2,053Metabolism, Diabetes, and CancerRegulation of Appetite and ObesityPeroxisome Proliferator-Activated Receptors

Leptin stimulates fatty-acid oxidation by activating AMP-activated protein kinase

Minokoshi, Yasuhiko, Kim, Young-Bum, Peroni, Odile D., Fryer, Lee G. D., Müller, Corinna, Carling, David, Kahn, Barbara B.·2002·Nature

Abstract

Leptin is a hormone secreted by adipocytes that plays a pivotal role in regulating food intake, energy expenditure and neuroendocrine function. Leptin stimulates the oxidation of fatty acids and the uptake of glucose, and prevents the accumulation of lipids in nonadipose tissues, which can lead to functional impairments known as "lipotoxicity". The signalling pathways that mediate the metabolic effects of leptin remain undefined. The 5'-AMP-activated protein kinase (AMPK) potently stimulates fatty-acid oxidation in muscle by inhibiting the activity of acetyl coenzyme A carboxylase (ACC). AMPK is a heterotrimeric enzyme that is conserved from yeast to humans and functions as a 'fuel gauge' to monitor the status of cellular energy. Here we show that leptin selectively stimulates phosphorylation and activation of the alpha2 catalytic subunit of AMPK (alpha2 AMPK) in skeletal muscle, thus establishing a previously unknown signalling pathway for leptin. Early activation of AMPK occurs by leptin acting directly on muscle, whereas later activation depends on leptin functioning through the hypothalamic-sympathetic nervous system axis. In parallel with its activation of AMPK, leptin suppresses the activity of ACC, thereby stimulating the oxidation of fatty acids in muscle. Blocking AMPK activation inhibits the phosphorylation of ACC stimulated by leptin. Our data identify AMPK as a principal mediator of the effects of leptin on fatty-acid metabolism in muscle.

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Crossref · 10.1038/415339a

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Authors
Minokoshi, Y., Kim, Y.-B., Peroni, O. D., Fryer, L. G. D., Müller, C., Carling, D., & Kahn, B. B.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • Hammersmith Hospital (GB)
Corresponding author
Kahn, Barbara B.
Venue
Nature
Published
2002-01-17
Volume
415
Issue
6869
Pages
339-343
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2042444876
Cited by
2,053
References
30
Citations by year
2026: 19 · 2025: 39 · 2024: 37 · 2023: 48 · 2022: 51 · 2021: 65 · 2020: 64 · 2019: 54 · 2018: 59 · 2017: 80 · 2016: 75 · 2015: 73 · 2014: 88 · 2013: 107 · 2012: 106
FWCI
43.29
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
leptin, AMPK, fatty acid oxidation, skeletal muscle, acetyl-CoA carboxylase, lipotoxicity, energy homeostasis
MeSH terms
Acetyl-CoA Carboxylase, Adrenergic alpha-Antagonists, Adrenergic beta-Agonists, Animals, Enzyme Activation, Fatty Acids, Isoproterenol, Male, Multienzyme Complexes, Oxidation-Reduction, Phentolamine, Phosphorylation, Sympathetic Nervous System, Signal Transduction, Protein Serine-Threonine Kinases, Muscle, Skeletal, Catalytic Domain, Leptin, Lipid Metabolism, Mice, AMP-Activated Protein Kinases

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