Cited by 102Exercise and Physiological ResponsesAdipose Tissue and MetabolismMuscle Physiology and Disorders

IL-15 Overexpression Promotes Endurance, Oxidative Energy Metabolism, and Muscle PPARδ, SIRT1, PGC-1α, and PGC-1β Expression in Male Mice

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Quinn, LeBris S., Anderson, Barbara G., Conner, Jennifer D., Wolden-Hanson, Tami·2013·Endocrinology

Abstract

Endurance exercise initiates a pattern of gene expression that promotes fat oxidation, which in turn improves endurance, body composition, and insulin sensitivity. The signals from exercise that initiate these pathways have not been completely characterized. IL-15 is a cytokine that is up-regulated in skeletal muscle after exercise and correlates with leanness and insulin sensitivity. To determine whether IL-15 can induce any of the metabolic adaptations associated with exercise, substrate metabolism, endurance, and molecular expression patterns were examined in male transgenic mice with constitutively elevated muscle and circulating IL-15 levels. IL-15 transgenic mice ran twice as long as littermate control mice in a run-to-exhaustion trial and preferentially used fat for energy metabolism. Fast muscles in IL-15 transgenic mice exhibited high expression of intracellular mediators of oxidative metabolism that are induced by exercise, including sirtuin 1, peroxisome proliferator-activated receptor (PPAR)-δ, PPAR-γ coactivator-1α, and PPAR-γ coactivator-1β. Muscle tissue in IL-15 transgenic mice exhibited myosin heavy chain and troponin I mRNA isoform expression patterns indicative of a more oxidative phenotype than controls. These findings support a role for IL-15 in induction of exercise endurance, oxidative metabolism, and skeletal muscle molecular adaptations induced by physical training.

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  1. [30]30. Pistilli EE, Bogdanovich S, Garton F, Yang N, Gulbin JP, Conner JD, Anderson BG, Quinn LS, North K, Ahima RS, Khurana TS. 2011. Loss of interleukin-15Rα alters endurance, fatigability, and metabolic characteristics of mouse fast skeletal muscles. J Clin Invest 121:3120–3132 [DOI] [PMC free article] [PubMed] [Google Scholar]

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Authors
Quinn, L. S., Anderson, B. G., Conner, J. D., & Wolden-Hanson, T.
Affiliations
  • University of Washington (US)
  • VA Puget Sound Health Care System (US)
  • Research Service (L.S.Q., J.D.C., T.W.-H.), VA Puget Sound Health Care System, Seattle, Washington 98108
Corresponding author
Quinn, LeBris S.
Venue
Endocrinology
Published
2013-01-01
Volume
154
Issue
1
Pages
232-245
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W1963939681
Cited by
102
References
44
Citations by year
2026: 7 · 2025: 2 · 2024: 8 · 2023: 8 · 2022: 7 · 2021: 8 · 2020: 7 · 2019: 5 · 2018: 14 · 2017: 4 · 2016: 9 · 2015: 7 · 2014: 10 · 2013: 6
FWCI
7.78
Type
journal article
Language
en
Open access
Locations
  • Endocrinology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs (I01 BX001026)
  • National Institute on Aging (R01AG024136, P30AG013280)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P30-DK 17047, P30DK017047)
Topics
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
IL-15, endurance exercise, skeletal muscle, oxidative metabolism, fat oxidation, PPARδ, SIRT1, PGC-1α, PGC-1β, transgenic mice, myosin heavy chain isoforms, troponin I isoforms, exercise adaptation, insulin sensitivity, muscle fiber type
MeSH terms
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, Animals, Energy Metabolism, Male, Mice, Transgenic, Transcription Factors, Trans-Activators, Muscle, Skeletal, Myosin Heavy Chains, Troponin I, Interleukin-15, PPAR delta, Mice, Sirtuin 1

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