Cited by 199Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismPeroxisome Proliferator-Activated Receptors

Interleukin-15 stimulates adiponectin secretion by 3T3-L1 adipocytes: Evidence for a skeletal muscle-to-fat signaling pathway

QUINN, L, STRAITBODEY, L, ANDERSON, B, ARGILES, J, HAVEL, P·2005·Cell Biology International

Abstract

Interleukin-15 (IL-15) is a cytokine which is highly expressed in skeletal muscle tissue, and which has anabolic effects on skeletal muscle protein dynamics both in vivo and in vitro. Additionally, administration of IL-15 to rats and mice inhibits white adipose tissue deposition. To determine if the action of IL-15 on adipose tissue is direct, the capacity of cultured murine 3T3-L1 preadipocytes and adipocytes to respond to IL-15 was examined. IL-15 administration inhibited lipid accumulation in differentiating 3T3-L1 preadipocytes, and stimulated secretion of the adipocyte-specific hormone adiponectin by differentiated 3T3-L1 adipocytes. The latter observation constitutes the first report of a cytokine or growth factor which stimulates adiponectin production. IL-15 mRNA expression by cultured 3T3-L1 adipogenic cells and C2C12 murine skeletal myogenic cells was also examined. Quantitative real-time PCR indicated IL-15 mRNA was expressed by C2C12 skeletal myogenic cells, and was upregulated more than 10-fold in differentiated skeletal myotubes compared to undifferentiated myoblasts. In contrast, 3T3-L1 cells expressed little or no IL-15 mRNA at either the undifferentiated preadipocyte or differentiated adipocyte stages. These findings provide support for the hypothesis that IL-15 functions in a muscle-to-fat endocrine axis which modulates fat:lean body composition and insulin sensitivity.

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  1. L.S. Quinn et al. / Cell Biology International --(2005) ---e --- in rodent obesity models: evidence for direct IL-15 action on adipose tissue. Biochim Biophys Acta 2002;1570:33 e 7.
  2. Haugk KL, Wilson HM-P, Swisshelm K, Quinn LS. IGF binding protein-related protein 1: an autocrine/paracrine factor which inhibits skeletal myoblast differentiation but permits proliferation in response to IGF. Endocrinology 2000;141:100 e 10.
  3. HavelPJ.Updateonadipocytehormones e regulationof energybalance and carbohydrate/lipid metabolism. Diabetes 2004;53:S143 e 51.

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Authors
QUINN, L., STRAITBODEY, L., ANDERSON, B., ARGILES, J., & HAVEL, P.
Affiliations
  • University of Washington (US)
  • University of California, Davis (US)
Corresponding author
QUINN, L
Venue
Cell Biology International
Publisher
Wiley
Published
2005-06
Volume
29
Issue
6
Pages
449-457
ISSN
1065-6995 (ISSN-L)
OpenAlex
W1985362981
Cited by
199
References
40
Citations by year
2026: 4 · 2025: 5 · 2024: 9 · 2023: 6 · 2022: 17 · 2021: 14 · 2020: 9 · 2019: 10 · 2018: 11 · 2017: 15 · 2016: 5 · 2015: 9 · 2014: 16 · 2013: 7 · 2012: 8
FWCI
7.93
Type
journal article
Language
en
Open access
closed
Locations
  • Cell Biology International (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R03DK058108, DK 50129, DK-58108, DK-17047, R01DK050129, P30DK017047)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
IL-15, adiponectin secretion, 3T3-L1 adipocytes, adipogenesis, lipid accumulation, skeletal muscle myotubes, insulin sensitivity
MeSH terms
Animals, Cells, Cultured, Signal Transduction, Adipocytes, Muscle, Skeletal, Interleukin-15, 3T3-L1 Cells, Mice, Rats, Adiponectin

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