Cited by 406Metabolism, Diabetes, and CancerAdipose Tissue and MetabolismMuscle Physiology and Disorders

AMP-activated protein kinase (AMPK) β1β2 muscle null mice reveal an essential role for AMPK in maintaining mitochondrial content and glucose uptake during exercise

Open access
O'Neill, Hayley M., Maarbjerg, Stine J., Crane, Justin D., Jeppesen, Jacob, Jørgensen, Sebastian B., Schertzer, Jonathan D., Shyroka, Olga, Kiens, Bente +5 more·2011·Proceedings of the National Academy of Sciences

Abstract

AMP-activated protein kinase (AMPK) β1 or β2 subunits are required for assembling of AMPK heterotrimers and are important for regulating enzyme activity and cellular localization. In skeletal muscle, α2β2γ3-containing heterotrimers predominate. However, compensatory up-regulation and redundancy of AMPK subunits in whole-body AMPK α2, β2, and γ3 null mice has made it difficult to determine the physiological importance of AMPK in regulating muscle metabolism, because these models have normal mitochondrial content, contraction-stimulated glucose uptake, and insulin sensitivity. In the current study, we generated mice lacking both AMPK β1 and β2 isoforms in skeletal muscle (β1β2M-KO). β1β2M-KO mice are physically inactive and have a drastically impaired capacity for treadmill running that is associated with reductions in skeletal muscle mitochondrial content but not a fiber-type switch. Interestingly, young β1β2M-KO mice fed a control chow diet are not obese or insulin resistant but do have impaired contraction-stimulated glucose uptake. These data demonstrate an obligatory role for skeletal muscle AMPK in maintaining mitochondrial capacity and contraction-stimulated glucose uptake, findings that were not apparent in mice with single mutations or deletions in muscle α, β, or γ subunits.

Integrity signals

Registry

Crossref · 10.1073/pnas.1105062108

Cites

51 of 51 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Functional AMPK is critical in maintaining muscle mitochondrial content.

    “researchers have used the muscle-specific double knockout AMPK β1 and β2 mouse model (β1β2M-KO) to demonstrate functional AMPK is critical in maintaining muscle mitochondrial content (O'neill et al., 2011).”
  • Exercise can regulate glucose uptake by an insulin-independent mechanism involving AMPK.

    “Exercise can also regulate glucose uptake by an insulin-independent mechanism involving AMPK [30].”

    From AMPK and Exercise: Glucose Uptake and Insulin Sensitivity (2013) · cites this paper as [30]

  • AMPK β1β2M-KO mice have undetectable levels of AMPK activity at rest or during exercise.

    “As anticipated, AMPK β1β2M-KO mice have undetectable levels of AMPK activity at rest or during exercise [30].”

    From AMPK and Exercise: Glucose Uptake and Insulin Sensitivity (2013) · cites this paper as [30]

  • Young AMPK β1β2M-KO mice have similar whole-body weight and adiposity compared to wild-type littermates.

    “Interestingly, young (9 to 12 weeks) AMPK β1β2M-KO mice have similar whole-body weight and adiposity, and consistent with this, whole-body and skeletal muscle specific insulin sensitivity is similar when compared to wild-type littermates [30].”

    From AMPK and Exercise: Glucose Uptake and Insulin Sensitivity (2013) · cites this paper as [30]

  • Whole-body and skeletal muscle specific insulin sensitivity is similar in young AMPK β1β2M-KO mice compared to wild-type littermates.

    “Interestingly, young (9 to 12 weeks) AMPK β1β2M-KO mice have similar whole-body weight and adiposity, and consistent with this, whole-body and skeletal muscle specific insulin sensitivity is similar when compared to wild-type littermates [30].”

    From AMPK and Exercise: Glucose Uptake and Insulin Sensitivity (2013) · cites this paper as [30]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
O'Neill, H. M., Maarbjerg, S. J., Crane, J. D., Jeppesen, J., Jørgensen, S. B., Schertzer, J. D., Shyroka, O., Kiens, B., van Denderen, B. J., Tarnopolsky, M. A., Kemp, B. E., Richter, E. A., & Steinberg, G. R.
Affiliations
  • Department of Medicine, McMaster University, Hamilton, ON, Canada L8N 3Z5;
  • University of Copenhagen (DK)
  • McMaster University (CA)
  • Novo Nordisk (Denmark) (DK)
  • St Vincent's Institute of Medical Research and Department of Medicine, University of Melbourne, Fitzroy, Victoria 3065, Australia;
  • The University of Melbourne (AU)
Venue
Proceedings of the National Academy of Sciences
Published
2011-09-06
Volume
108
Issue
38
Pages
16092-16097
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2140808124
Cited by
406
References
51
Citations by year
2026: 14 · 2025: 13 · 2024: 17 · 2023: 14 · 2022: 22 · 2021: 27 · 2020: 28 · 2019: 29 · 2018: 26 · 2017: 38 · 2016: 38 · 2015: 41 · 2014: 38 · 2013: 34 · 2012: 24
FWCI
12.84
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
  • Sundhed og Sygdom, Det Frie Forskningsråd
  • McMaster University
  • University of Melbourne
  • State Government of Victoria
  • H. Lundbeck A/S
  • Canadian Institutes of Health Research
  • Medical Research Council
  • National Health and Medical Research Council
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 › Muscle Physiology and Disorders
Keywords
AMPK, skeletal muscle, exercise capacity, muscle metabolism, AMPK knockout mice, treadmill running
MeSH terms
Animals, DNA, Mitochondrial, Female, Glucose, Hypoglycemic Agents, Insulin, Male, Mice, Inbred C57BL, Mitochondria, Muscle, Muscle Contraction, Physical Conditioning, Animal, Immunoblotting, Mice, Knockout, Muscle, Skeletal, Reverse Transcriptase Polymerase Chain Reaction, Mitochondrial Proteins, Microscopy, Electron, Transmission, Mice, AMP-Activated Protein Kinases

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review