Cited by 317Metabolism, Diabetes, and CancerAdipose Tissue and MetabolismGlycogen Storage Diseases and Myoclonus

The DOI matches its Crossref record; 35 of the 37 references it cites were found in a registry or an index.

The 5′-AMP-activated Protein Kinase γ3 Isoform Has a Key Role in Carbohydrate and Lipid Metabolism in Glycolytic Skeletal Muscle

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Abstract

5'-AMP-activated protein kinase (AMPK) is a metabolic stress sensor present in all eukaryotes. A dominant missense mutation (R225Q) in pig PRKAG3, encoding the muscle-specific gamma3 isoform, causes a marked increase in glycogen content. To determine the functional role of the AMPK gamma3 isoform, we generated transgenic mice with skeletal muscle-specific expression of wild type or mutant (225Q) mouse gamma3 as well as Prkag3 knockout mice. Glycogen resynthesis after exercise was impaired in AMPK gamma3 knock-out mice and markedly enhanced in transgenic mutant mice. An AMPK activator failed to increase skeletal muscle glucose uptake in AMPK gamma3 knock-out mice, whereas contraction effects were preserved. When placed on a high fat diet, transgenic mutant mice but not knock-out mice were protected against excessive triglyceride accumulation and insulin resistance in skeletal muscle. Transfection experiments reveal the R225Q mutation is associated with higher basal AMPK activity and diminished AMP dependence. Our results validate the muscle-specific AMPK gamma3 isoform as a therapeutic target for prevention and treatment of insulin resistance.

Overview

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Crossref · 10.1074/jbc.m405533200

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35 of 35 references verified0 citation errors · 0 not checkable

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2 of the 37 references couldn’t be matched to a known paper.

Research works printed but not linked: 7

  1. Hawley, 2003, J. Biol.
  2. Hayashi, 1998, Diabetes, 47, 1369
  3. Arad, 2002, J. Clin. Investig., 109, 357, 10.1172/JCI0214571 · DOI
  4. Estrade, 1993, Comp. Biochem. Physiol., 104B, 321
  5. Monin, G., Brard, C., Vernin, P. & Naveau, J. (1992) in 38th International Congress on Meat Science and Technology, Vol. 3, pp. 391–394, Clermont-Ferrand, France
  6. Kozak, 1989, Mol. Cell. Biol., 9, 5073
  7. Estrade, 1994, Comp. Biochem. Physiol., 108, 295

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Items 201–300 of 317

Metadata

Authors
Barnes, B. R., Marklund, S., Steiler, T. L., Walter, M., Hjälm, Amarger, V., Mahlapuu, M., Leng, Y., Johansson, C., Galuska, D., Lindgren, K., Åbrink, M., Stapleton, D., Zierath, J. R., & Andersson, L.
Affiliations
  • Karolinska Institutet (SE)
  • Swedish University of Agricultural Sciences (SE)
  • Uppsala University (SE)
Corresponding author
  • Zierath, Juleen R.
  • Andersson, Leif
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2004-09
Volume
279
Issue
37
Pages
38441-38447
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2147553969
Cited by
317
References
37
Citations by year
2026: 5 · 2025: 3 · 2024: 9 · 2023: 7 · 2022: 4 · 2021: 8 · 2020: 15 · 2019: 15 · 2018: 9 · 2017: 14 · 2016: 21 · 2015: 17 · 2014: 21 · 2013: 17 · 2012: 10
FWCI
6.87
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • Svenska Forskningsrådet Formas
  • Karolinska Institutet
  • Vetenskapsrådet
  • Uppsala Universitet
  • Medical Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Physiology (medical) › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Glycogen Storage Diseases and Myoclonus
Keywords
AMPK, PRKAG3, skeletal muscle, glycogen resynthesis, physical activity, skeletal muscle glucose uptake, triglyceride accumulation, insulin resistance, high-fat diet, carbohydrate metabolism, lipid metabolism
MeSH terms
Animals, Blood Glucose, Glucose, Glycogen, Glycolysis, Insulin, Mice, Transgenic, Models, Genetic, Multienzyme Complexes, Protein Kinases, RNA, Messenger, Swine, Temperature, Transfection, Triglycerides, Protein Serine-Threonine Kinases, DNA, Complementary, Mice, Knockout, Muscle, Skeletal, COS Cells, Protein Isoforms, Mutation, Missense, Reverse Transcriptase Polymerase Chain Reaction, Lipid Metabolism, Mice, AMP-Activated Protein Kinases

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