Cited by 561Metabolism, Diabetes, and CancerAdipose Tissue and MetabolismMitochondrial Function and Pathology

Chronic activation of AMP kinase results in NRF-1 activation and mitochondrial biogenesis

Bergeron, Raynald, Ren, Jian Ming, Cadman, Kevin S., Moore, Irene K., Perret, Pascale, Pypaert, Marc, Young, Lawrence H., Semenkovich, Clay F. +1 more·2001·American Journal of Physiology-Endocrinology and Metabolism

Abstract

The underlying mechanism by which skeletal muscle adapts to exercise training or chronic energy deprivation is largely unknown. To examine this question, rats were fed for 9 wk either with or without β-guanadinopropionic acid (β-GPA; 1% enriched diet), a creatine analog that is known to induce muscle adaptations similar to those induced by exercise training. Muscle phosphocreatine, ATP, and ATP/AMP ratios were all markedly decreased and led to the activation of AMP-activated protein kinase (AMPK) in the β-GPA-fed rats compared with control rats. Under these conditions, nuclear respiratory factor-1 (NRF-1) binding activity, measured using a cDNA probe containing a sequence encoding for the promoter of δ-aminolevulinate (ALA) synthase, was increased by about eightfold in the muscle of β-GPA-fed rats compared with the control group. Concomitantly, muscle ALA synthase mRNA and cytochrome ccontent were also increased. Mitochondrial density in both extensor digitorum longus and epitrochlearis from β-GPA-fed rats was also increased by more than twofold compared with the control group. In conclusion, chronic phosphocreatine depletion during β-GPA supplementation led to the activation of muscle AMPK that was associated with increased NRF-1 binding activity, increased cytochrome c content, and increased muscle mitochondrial density. Our data suggest that AMPK may play an important role in muscle adaptations to chronic energy stress and that it promotes mitochondrial biogenesis and expression of respiratory proteins through activation of NRF-1.

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Crossref · 10.1152/ajpendo.2001.281.6.e1340

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Authors
Bergeron, R., Ren, J. M., Cadman, K. S., Moore, I. K., Perret, P., Pypaert, M., Young, L. H., Semenkovich, C. F., & Shulman, G. I.
Affiliations
  • Departments of Internal Medicine,
  • Bristol-Myers Squibb (United States) (US)
  • Cell Biology, and
  • Washington University in St. Louis (US)
  • Howard Hughes Medical Institute (US)
Venue
American Journal of Physiology-Endocrinology and Metabolism
Published
2001-12-01
Volume
281
Issue
6
Pages
E1340-E1346
ISSN
  • 0193-1849 (ISSN-L)
  • 1522-1555
OpenAlex
W2184995059
Cited by
561
References
45
Citations by year
2026: 5 · 2025: 20 · 2024: 12 · 2023: 19 · 2022: 22 · 2021: 21 · 2020: 23 · 2019: 14 · 2018: 14 · 2017: 26 · 2016: 20 · 2015: 32 · 2014: 34 · 2013: 29 · 2012: 30
FWCI
5.70
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Heart, Lung, and Blood Institute (R01HL063811, HL-63811)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30DK45735, R01-DK40936, R01DK040936, P30DK045735)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
AMPK, NRF1, mitochondrial biogenesis, skeletal muscle, phosphocreatine depletion, energy deprivation, training effects, delta-aminolevulinic acid synthase, cytochrome c, mitochondrial density, AMP/ATP ratio
MeSH terms
Adenylate Kinase, 5-Aminolevulinate Synthetase, Animals, Cell Nucleus, Cytochrome c Group, DNA-Binding Proteins, Energy Metabolism, Enzyme Activation, Male, Microscopy, Electron, Mitochondria, Muscle, RNA, Messenger, Blotting, Northern, Trans-Activators, Rats, Sprague-Dawley, Muscle, Skeletal, Nuclear Respiratory Factors, NF-E2-Related Factor 1, Nuclear Respiratory Factor 1, Rats

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