Cited by 173Regulation of Appetite and ObesityAdipokines, Inflammation, and Metabolic DiseasesCytokine Signaling Pathways and Interactions

Roles for leptin receptor/STAT3-dependent and -independent signals in the regulation of glucose homeostasis

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Bates, Sarah H., Kulkarni, Rohit N., Seifert, Matthew, Myers, Martin G.·2005·Cell Metabolism

Abstract

Leptin activates the long form of the leptin receptor (LRb) to control feeding and neuroendocrine function and thus regulate adiposity. While adiposity influences insulin sensitivity, leptin also regulates glucose homeostasis independently of energy balance. Disruption of the LRb/STAT3 signal in s/s mice results in hyperphagia, neuroendocrine dysfunction, and obesity similar to LRb null db/db mice. Insulin resistance and glucose intolerance are improved in s/s compared to db/db animals, however, suggesting that LRb/STAT3-independent signals may contribute to the regulation of glucose homeostasis by leptin. Indeed, caloric restriction normalized glycemic control in s/s animals, but db/db mice of similar weight and adiposity remained hyperglycemic. These differences in glucose homeostasis were not attributable to differences in insulin production between s/s and db/db animals but rather to decreased insulin resistance in s/s mice. Thus, in addition to LRb/STAT3-mediated adiposity signals, non-LRb/STAT3 leptin signals mediate an important adiposity-independent role in promoting glycemic control.

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Registry

Crossref · 10.1016/j.cmet.2005.02.001

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  • The phenotype of s/s mice does not completely mimic that of ob/ob or db/db mice with respect to glucose metabolism, immune function, or reproduction, implying that other LepRb signals contribute to leptin action.

    “However, the phenotype of these s/s mice does not completely mimic that of either ob/ob or db/db mice with respect to glucose metabolism, immune function or reproduction (13, 14), implying that other LepRb signals must also contribute to leptin action.”
  • Leptin receptor-mediated STAT3 signaling is critical for energy homeostasis but not for glucose homeostasis.

    “leptin receptor-mediated STAT3 signaling appears to be critical for energy homeostasis, but not for glucose homeostasis.”

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Authors
Bates, S. H., Kulkarni, R. N., Seifert, M., & Myers, M. G.
Affiliations
  • University of Michigan (US)
  • Joslin Diabetes Center (US)
Corresponding author
Myers, Martin G.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2005-03
Volume
1
Issue
3
Pages
169-178
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2122551774
Cited by
173
References
47
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 5 · 2022: 1 · 2021: 5 · 2020: 11 · 2019: 5 · 2018: 11 · 2017: 14 · 2016: 7 · 2015: 6 · 2014: 7 · 2013: 10 · 2012: 11
FWCI
5.38
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Public Health Service (56731)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 57768, R01DK057768)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
leptin, leptin receptor, STAT3 signaling, glucose homeostasis, insulin resistance, impaired glucose tolerance, db/db mice, caloric restriction, hyperphagia, neuroendocrine dysfunction, obesity
MeSH terms
Animals, Body Composition, Body Weight, DNA-Binding Proteins, Glucose, Homeostasis, Hyperglycemia, Insulin Resistance, Male, Mice, Mutant Strains, Receptors, Cell Surface, Signal Transduction, Trans-Activators, Amino Acid Substitution, Caloric Restriction, STAT3 Transcription Factor, Mice, Receptors, Leptin

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