Cited by 860Metabolism, Diabetes, and CancerGenetics, Aging, and Longevity in Model OrganismsAutophagy in Disease and Therapy

AMP-Activated Protein Kinase (AMPK) Controls the Aging Process via an Integrated Signaling Network

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Salminen, Antero, Kaarniranta, Kai·2012·Ageing Research Reviews

Abstract

Efficient control of energy metabolic homeostasis, enhanced stress resistance, and qualified cellular housekeeping are the hallmarks of improved healthspan and extended lifespan. AMPK signaling is involved in the regulation of all these characteristics via an integrated signaling network. Many studies with lower organisms have revealed that increased AMPK activity can extend the lifespan. Experiments in mammals have demonstrated that AMPK controls autophagy through mTOR and ULK1 signaling which augment the quality of cellular housekeeping. Moreover, AMPK-induced stimulation of FoxO/DAF-16, Nrf2/SKN-1, and SIRT1 signaling pathways improves cellular stress resistance. Furthermore, inhibition of NF-κB signaling by AMPK suppresses inflammatory responses. Emerging studies indicate that the responsiveness of AMPK signaling clearly declines with aging. The loss of sensitivity of AMPK activation to cellular stress impairs metabolic regulation, increases oxidative stress and reduces autophagic clearance. These age-related changes activate innate immunity defence, triggering a low-grade inflammation and metabolic disorders. We will review in detail the signaling pathways of this integrated network through which AMPK controls energy metabolism, autophagic degradation and stress resistance and ultimately the aging process.

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Authors
Salminen, A., & Kaarniranta, K.
Affiliations
University of Eastern Finland (FI)
Corresponding author
Salminen, Antero
Venue
Ageing Research Reviews
Publisher
Elsevier BV
Published
2012-04
Volume
11
Issue
2
Pages
230-241
ISSN
1568-1637 (ISSN-L)
OpenAlex
W2111322904
Cited by
860
References
211
Citations by year
2026: 71 · 2025: 74 · 2024: 86 · 2023: 88 · 2022: 72 · 2021: 92 · 2020: 64 · 2019: 49 · 2018: 64 · 2017: 41 · 2016: 42 · 2015: 49 · 2014: 27 · 2013: 33 · 2012: 8
FWCI
1.97
Type
journal article
Language
en
Open access
Locations
  • Ageing Research Reviews (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • Academy of Finland
  • University of Eastern Finland, Kuopio, Finland
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
AMPK, aging, healthspan, lifespan extension, energy metabolism, autophagy, mTOR signaling, SIRT1, NF-κB signaling, stress tolerance, oxidative stress, low-grade inflammation, innate immunity, metabolic disorders
MeSH terms
Aging, Animals, Autophagy, Energy Metabolism, Enzyme Activation, Humans, Stress, Physiological, Signal Transduction, Cellular Senescence, AMP-Activated Protein Kinases

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