Cited by 813Metabolism, Diabetes, and CancerBiochemical and Molecular ResearchPeroxisome Proliferator-Activated Receptors

AMP-Activated Protein Kinase – Development of the Energy Sensor Concept

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Hardie, D. Grahame, Hawley, Simon A., Scott, John W.·2006·The Journal of Physiology

Abstract

The LKB1-->AMPK cascade is switched on by metabolic stresses that either inhibit ATP production (e.g. hypoxia, hypoglycaemia) or that accelerate ATP consumption (e.g. muscle contraction). Any decline in cellular energy status is accompanied by a rise in the cellular AMP: ATP ratio, and this activates AMPK by a complex and sensitive mechanism involving antagonistic binding of the nucleotides to two sites on the regulatory gamma subunits of AMPK. Once activated by metabolic stress, AMPK activates catabolic pathways that generate ATP, while inhibiting cell growth and biosynthesis and other processes that consume ATP. While the AMPK system probably evolved in single-celled eukaryotes to maintain energy balance at the cellular level, in multicellular organisms its role has become adapted so that it is also involved in maintaining whole body energy balance. Thus, it is regulated by hormones and cytokines, especially the adipokines leptin and adiponectin, increasing whole body energy expenditure while regulating food intake. Some hormones may activate AMPK by an LKB1-independent mechanism involving Ca2+/calmodulin dependent protein kinase kinases. Low levels of activation of AMPK are likely to play a role in the current global rise in obesity and Type 2 diabetes, and AMPK is the target for the widely used antidiabetic drug metformin.

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Authors
Hardie, D. G., Hawley, S. A., & Scott, J. W.
Affiliations
University of Dundee (GB)
Corresponding author
Hardie, D. Grahame
Venue
The Journal of Physiology
Publisher
Wiley
Published
2006-06-19
Volume
574
Issue
1
Pages
7-15
ISSN
  • 0022-3751 (ISSN-L)
  • 1469-7793
OpenAlex
W2170716497
Cited by
813
References
88
Citations by year
2026: 4 · 2025: 18 · 2024: 15 · 2023: 14 · 2022: 20 · 2021: 29 · 2020: 29 · 2019: 20 · 2018: 44 · 2017: 27 · 2016: 34 · 2015: 41 · 2014: 41 · 2013: 43 · 2012: 68
FWCI
5.78
Type
journal article
Language
en
Open access
Locations
  • The Journal of Physiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • European Commission (LSHMCT-2004-005272)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Molecular Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
AMPK, LKB1, energy sensing, AMP/ATP ratio, metabolic stress, leptin, adiponectin, obesity, type 2 diabetes, metformin
MeSH terms
Animals, Diabetes Mellitus, Energy Metabolism, Humans, Multienzyme Complexes, Myocardium, Obesity, Oxygen, Protein Serine-Threonine Kinases, Oxidative Stress, Muscle, Skeletal, Metabolic Syndrome, AMP-Activated Protein Kinases

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