Cited by 182Metabolism, Diabetes, and CancerGrowth Hormone and Insulin-like Growth FactorsMuscle Physiology and Disorders

Differential role of insulin/IGF-1 receptor signaling in muscle growth and glucose homeostasis

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O’Neill, Brian T., Lauritzen, Hans P.M.M., Hirshman, Michael F., Smyth, Graham, Goodyear, Laurie J., Kahn, C. Ronald·2015·Cell Reports

Abstract

Insulin and insulin-like growth factor 1 (IGF-1) are major regulators of muscle protein and glucose homeostasis. To determine how these pathways interact, we generated mice with muscle-specific knockout of IGF-1 receptor (IGF1R) and insulin receptor (IR). These MIGIRKO mice showed >60% decrease in muscle mass. Despite a complete lack of insulin/IGF-1 signaling in muscle, MIGIRKO mice displayed normal glucose and insulin tolerance. Indeed, MIGIRKO mice showed fasting hypoglycemia and increased basal glucose uptake. This was secondary to decreased TBC1D1 resulting in increased Glut4 and Glut1 membrane localization. Interestingly, overexpression of a dominant-negative IGF1R in muscle induced glucose intolerance in MIGIRKO animals. Thus, loss of insulin/IGF-1 signaling impairs muscle growth, but not whole-body glucose tolerance due to increased membrane localization of glucose transporters. Nonetheless, presence of a dominant-negative receptor, even in the absence of functional IR/IGF1R, induces glucose intolerance, indicating that interactions between these receptors and other proteins in muscle can impair glucose homeostasis.

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Authors
O’Neill, B. T., Lauritzen, H. P. M. M., Hirshman, M. F., Smyth, G., Goodyear, L. J., & Kahn, C. R.
Affiliations
Joslin Diabetes Center (US)
Corresponding author
Kahn, C. Ronald
Venue
Cell Reports
Publisher
Elsevier BV
Published
2015-05
Volume
11
Issue
8
Pages
1220-1235
ISSN
2211-1247 (ISSN-L)
OpenAlex
W1578864848
Cited by
171
References
45
Citations by year
2026: 12 · 2025: 14 · 2024: 17 · 2023: 14 · 2022: 20 · 2021: 21 · 2020: 17 · 2019: 24 · 2018: 16 · 2017: 9 · 2016: 5 · 2015: 2
FWCI
3.77
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Mayo Clinic
  • Joslin Diabetes Center
  • Georgia Clinical and Translational Science Alliance
  • National Institutes of Health (UL1TR000135)
  • Diabetes Research Center
  • National Institute of Diabetes and Digestive and Kidney Diseases (R37DK031036, R01DK031036, R01DK033201, U24DK100469, K08DK100543, T32DK007260, P30DK036836)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR042238)
  • National Center for Advancing Translational Sciences
  • Common Fund
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
insulin receptor, IGF-1 receptor, muscle growth, glucose homeostasis, glucose tolerance, impaired glucose tolerance, hypoglycemia, glucose transporters, GLUT4, GLUT1, TBC1D1, dominant negative receptor, muscle-specific knockout, insulin/IGF-1 signaling
MeSH terms
Animals, Female, Glucose, Homeostasis, Male, Muscle Proteins, Phosphorylation, Receptor, Insulin, Signal Transduction, Receptor, IGF Type 1, Mice, Knockout, Muscle, Skeletal, Mice

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