Cited by 126Metabolism, Diabetes, and CancerAdipose Tissue and MetabolismMuscle Physiology and Disorders

Exercise and skeletal muscle glucose transporter 4 expression: Molecular mechanisms

McGee, Sean L, Hargreaves, Mark·2006·Clinical and Experimental Pharmacology and Physiology

Abstract

1. Skeletal muscle is a highly plastic tissue that has a remarkable ability to adapt to external demands, such as exercise. Many of these adaptations can be explained by changes in skeletal muscle gene expression. A single bout of exercise is sufficient to induce the expression of some metabolic genes. We have focused our attention on the regulation of glucose transporter isoform 4 (GLUT-4) expression in human skeletal muscle. 2. Glucose transporter isoform 4 gene expression is increased immediately following a single bout of exercise, and the GLUT-4 enhancer factor (GEF) and myocyte enhancer factor 2 (MEF2) transcription factors are required for this response. Glucose transporter isoform enhancer factor and MEF2 DNA binding activities are increased following exercise, and the molecular mechanisms regulating MEF2 in exercising human skeletal muscle have also been examined. 3. These studies find possible roles for histone deacetylase 5 (HDAC5), adenosine monophosphate-activated protein kinase (AMPK), peroxisome proliferator-activated receptor gamma coactivator 1alpha (PGC-1alpha) and p38 mitogen-activated protein kinase (MAPK) in regulating MEF2 through a series of complex interactions potentially involving MEF2 repression, coactivation and phosphorylation. 4. Given that MEF2 is a transcription factor required for many exercise responsive genes, it is possible that these mechanisms are responsible for regulating the expression of a variety of metabolic genes during exercise. These mechanisms could also provide targets for the treatment and management of metabolic disease states, such as obesity and type 2 diabetes, which are characterized by mitochondrial dysfunction and insulin resistance in skeletal muscle.

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Crossref · 10.1111/j.1440-1681.2006.04362.x

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  • During exercise, glycolytic flux in the skeletal muscles can be dramatically increased.

    “During exercise, glycolytic flux in the skeletal muscles can be dramatically increased [127,128].”

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Authors
McGee, S. L., & Hargreaves, M.
Affiliations
The University of Melbourne (AU)
Corresponding author
Hargreaves, Mark
Venue
Clinical and Experimental Pharmacology and Physiology
Publisher
Wiley
Published
2006-03-16
Volume
33
Issue
4
Pages
395-399
ISSN
  • 0305-1870 (ISSN-L)
  • 1440-1681
OpenAlex
W2143945526
Cited by
126
References
47
Citations by year
2026: 2 · 2025: 8 · 2024: 3 · 2023: 2 · 2022: 5 · 2021: 4 · 2020: 5 · 2019: 5 · 2018: 6 · 2017: 3 · 2016: 5 · 2015: 6 · 2014: 7 · 2013: 12 · 2012: 11
FWCI
0.64
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical and Experimental Pharmacology and Physiology (publishedVersion)
  • PubMed (publishedVersion)
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
physical activity, skeletal muscle, GLUT4, glucose transporter 4, gene expression, MEF2, transcription factors, HDAC5, AMPK, PGC-1α, p38 MAPK, muscle plasticity, insulin resistance, type 2 diabetes, obesity, mitochondrial dysfunction
MeSH terms
Gene Expression Regulation, Histone Deacetylases, Humans, Phosphorylation, Exercise, Myogenic Regulatory Factors, Muscle, Skeletal, MADS Domain Proteins, Glucose Transporter Type 4, MEF2 Transcription Factors

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