Cited by 285Metabolism, Diabetes, and CancerBiochemical and Molecular ResearchPI3K/AKT/mTOR signaling in cancer

AMP ‐activated protein kinase: a key regulator of energy balance with many roles in human disease

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Grahame Hardie, D.·2014·Journal of Internal Medicine

Abstract

The AMP-activated protein kinase (AMPK) is a sensor of cellular energy status that regulates cellular and whole-body energy balance. A recently reported crystal structure has illuminated the complex regulatory mechanisms by which AMP and ADP cause activation of AMPK, involving phosphorylation by the upstream kinase LKB1. Once activated by falling cellular energy status, AMPK activates catabolic pathways that generate ATP whilst inhibiting anabolic pathways and other cellular processes that consume ATP. A role of AMPK is implicated in many human diseases. Mutations in the γ2 subunit cause heart disease due to excessive glycogen storage in cardiac myocytes, leading to ventricular pre-excitation. AMPK-activating drugs reverse many of the metabolic defects associated with insulin resistance, and recent findings suggest that the insulin-sensitizing effects of the widely used antidiabetic drug metformin are mediated by AMPK. The upstream kinase LKB1 is a tumour suppressor, and AMPK may exert many of its antitumour effects. AMPK activation promotes the oxidative metabolism typical of quiescent cells, rather than the aerobic glycolysis observed in tumour cells and cells involved in inflammation, explaining in part why AMPK activators have both antitumour and anti-inflammatory effects. Salicylate (the major in vivo metabolite of aspirin) activates AMPK, and this could be responsible for at least some of the anticancer and anti-inflammatory effects of aspirin. In addition to metformin and salicylates, novel drugs that modulate AMPK are likely to enter clinical trials soon. Finally, AMPK may be involved in viral infection: downregulation of AMPK during hepatitis C virus infection appears to be essential for efficient viral replication.

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Authors
Grahame Hardie, D.
Affiliations
Division of Cell Signalling and Immunology College of Life Sciences University of Dundee Scotland UK
Venue
Journal of Internal Medicine
Publisher
Wiley
Published
2014-05-27
Volume
276
Issue
6
Pages
543-559
ISSN
  • 0954-6820 (ISSN-L)
  • 1365-2796
OpenAlex
W1979000812
Cited by
285
References
121
Citations by year
2026: 24 · 2025: 18 · 2024: 22 · 2023: 18 · 2022: 16 · 2021: 26 · 2020: 26 · 2019: 18 · 2018: 25 · 2017: 27 · 2016: 34 · 2015: 28 · 2014: 3
FWCI
2.89
Type
journal article
Language
en
Open access
Locations
  • Journal of Internal Medicine (publishedVersion, public-domain)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Discovery Research Portal (University of Dundee) (acceptedVersion, other-oa)
Funders
  • Wellcome Trust (097726)
  • Cancer Research UK (C37030/A15101)
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 › PI3K/AKT/mTOR signaling in cancer
Keywords
AMPK, energy balance, LKB1, AMPK activators, metformin, insulin resistance, heart disease, glycogen storage, tumor suppression, oxidative metabolism, aerobic glycolysis, anti-inflammatory activity, aspirin, salicylates, hepatitis C virus, viral replication
MeSH terms
Adenine Nucleotides, Cardiomyopathy, Hypertrophic, Diabetes Mellitus, Type 2, Energy Metabolism, Humans, Inflammation, Mutation, Neoplasms, Virus Diseases, Calcium Channels, Molecular Structure, AMP-Activated Protein Kinases

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