Cited by 958Circadian rhythm and melatoninMetabolism, Diabetes, and CancerLight effects on plants

AMPK regulates the circadian clock by cryptochrome phosphorylation and degradation

Open access
Lamia, Katja A., Sachdeva, Uma M., DiTacchio, Luciano, Williams, Elliot C., Alvarez, Jacqueline G., Egan, Daniel F., Vasquez, Debbie S., Juguilon, Henry +4 more·2009·Science

Abstract

Circadian clocks coordinate behavioral and physiological processes with daily light-dark cycles by driving rhythmic transcription of thousands of genes. Whereas the master clock in the brain is set by light, pacemakers in peripheral organs, such as the liver, are reset by food availability, although the setting, or "entrainment," mechanisms remain mysterious. Studying mouse fibroblasts, we demonstrated that the nutrient-responsive adenosine monophosphate-activated protein kinase (AMPK) phosphorylates and destabilizes the clock component cryptochrome 1 (CRY1). In mouse livers, AMPK activity and nuclear localization were rhythmic and inversely correlated with CRY1 nuclear protein abundance. Stimulation of AMPK destabilized cryptochromes and altered circadian rhythms, and mice in which the AMPK pathway was genetically disrupted showed alterations in peripheral clocks. Thus, phosphorylation by AMPK enables cryptochrome to transduce nutrient signals to circadian clocks in mammalian peripheral organs.

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  • CRY1 and CRY2, implicated in the ADHD-associated dysregulation of the circadian system, are modelled through AMPK activity by MPH improving the impairment of this system.

    “These CLOCK components CRY1 and CRY2, implicated in the ADHD-associated dysregulation of the circadian system [213], are modelled through AMPK activity by MPH improving the impairment of this system [214].”

    From Molecular Characterisation of the Mechanism of Action of Stimulant Drugs Lisdexamfetamine and Methylphenidate on ADHD Neurobiology: A Review (2022) · cites this paper as [213]

    The passage labelled Abstract (page unavailable) reports that AMPK phosphorylates and destabilizes CRY1 and that AMPK stimulation alters circadian rhythms in mouse fibroblasts and livers. It does not show that MPH acts through AMPK or improves circadian impairment; the passages found also do not establish the specific CRY2 mechanism. The ADHD association is attached to citation [213], not this source. (LLM, conf=0.88)

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  • Activation of AMPK leads to altered circadian rhythms by destabilizing the negative limb of the circadian clock.

    “Indeed, activation of adenosine monophosphate-activated protein kinase (AMPK), a sensor of low intracellular energy and nutrient state, leads to altered circadian rhythms by destabilizing the negative limb of the circadian clock [41,42].”

    From Circadian control of glucose metabolism (2014) · cites this paper as [42]

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Authors
Lamia, K. A., Sachdeva, U. M., DiTacchio, L., Williams, E. C., Alvarez, J. G., Egan, D. F., Vasquez, D. S., Juguilon, H., Panda, S., Shaw, R. J., Thompson, C. B., & Evans, R. M.
Affiliations
  • Salk Institute for Biological Studies (US)
  • Abramson Cancer Center (US)
Corresponding author
  • Lamia, Katja A.
  • Sachdeva, Uma M.
  • Thompson, Craig B.
  • Evans, Ronald M.
Venue
Science
Published
2009-10-16
Volume
326
Issue
5951
Pages
437-440
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2004849589
Cited by
958
References
29
Citations by year
2026: 42 · 2025: 57 · 2024: 48 · 2023: 55 · 2022: 55 · 2021: 64 · 2020: 76 · 2019: 54 · 2018: 49 · 2017: 59 · 2016: 73 · 2015: 55 · 2014: 54 · 2013: 62 · 2012: 61
FWCI
22.31
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Heart, Lung, and Blood Institute (T32-HL07439-27, T32HL007439)
  • National Eye Institute (R01EY016807, EY016807)
  • National Cancer Institute (P01CA104838, CA104838, P30CA014195)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R37DK057978, DK080425, DK057978, DK062434, R01DK080425, U19DK062434)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
Keywords
AMPK, circadian clock, CRY1, protein degradation, nutrient signaling, peripheral clocks, clock entrainment, liver, mouse fibroblasts
MeSH terms
Aminoimidazole Carboxamide, Animals, Cell Line, Cell Nucleus, Cells, Cultured, Circadian Rhythm, Culture Media, Flavoproteins, Food, Glucose, Humans, Liver, Phosphorylation, Promoter Regions, Genetic, Recombinant Fusion Proteins, Ribonucleotides, Signal Transduction, Mutagenesis, Site-Directed, Amino Acid Substitution, Mutant Proteins, Mice, Basic Helix-Loop-Helix Proteins, AMP-Activated Protein Kinases, Protein Stability, ARNTL Transcription Factors, Cryptochromes

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