Cited by 228Regulation of Appetite and ObesityAdipokines, Inflammation, and Metabolic DiseasesCytokine Signaling Pathways and Interactions

Critical role of STAT3 in leptin's metabolic actions

Open access
Buettner, Christoph, Pocai, Alessandro, Muse, Evan D., Etgen, Anne M., Myers, Martin G., Rossetti, Luciano·2006·Cell Metabolism

Abstract

Leptin has pleiotropic effects on glucose homeostasis and feeding behavior. Here, we validate the use of a cell-permeable phosphopeptide that blocks STAT3 activation in vivo. The combination of this biochemical approach with stereotaxic surgical techniques allowed us to pinpoint the contribution of hypothalamic STAT3 to the acute effects of leptin on food intake and glucose homeostasis. Leptin's ability to acutely reduce food intake critically depends on intact STAT3 signaling. Likewise, hypothalamic signaling of leptin through STAT3 is required for the acute effects of leptin on liver glucose fluxes. Lifelong obliteration of STAT3 signaling via the leptin receptor in mice (s/s mice) results in severe hepatic insulin resistance that is comparable to that observed in db/db mice, devoid of leptin receptor signaling. Our results demonstrate that the activation of the hypothalamic STAT3 pathway is an absolute requirement for the effects of leptin on food intake and hepatic glucose metabolism.

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Crossref · 10.1016/j.cmet.2006.04.014

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  • The ability of hypothalamic leptin to regulate food intake, glucose metabolism and reproductive function requires intact STAT3 signaling.

    “while the ability of hypothalamic leptin to regulate food intake, glucose metabolism and reproductive function requires intact STAT3 signaling”
  • Infusion of leptin directly into the mediobasal hypothalamus during a euglycemic-hyperinsulinemic clamp suppresses expression of key de novo lipogenic enzymes in white adipose tissue and activates lipolysis and suppresses free fatty acid uptake into this tissue.

    “Infusion of leptin directly into the mediobasal hypothalamus during an euglycemic-hyperinsulinemic clamp suppressed the expression of key de novo lipogenic enzymes in WAT and also activated lipolysis and suppressed FFA uptake into this tissue (28).”
  • The effects of leptin on adipose tissue metabolism are STAT3-independent and appear to involve hypothalamic PI3K and sympathetic nervous system outflow.

    “these effects of leptin on adipose tissue metabolism are STAT3-independent, appearing instead to involve hypothalamic PI3K and SNS outflow (28).”

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Authors
Buettner, C., Pocai, A., Muse, E. D., Etgen, A. M., Myers, M. G., & Rossetti, L.
Affiliations
  • Albert Einstein College of Medicine (US)
  • University of Michigan (US)
Corresponding author
Rossetti, Luciano
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2006-07
Volume
4
Issue
1
Pages
49-60
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2018642386
Cited by
228
References
60
Citations by year
2026: 3 · 2025: 17 · 2024: 4 · 2023: 4 · 2022: 6 · 2021: 17 · 2020: 11 · 2019: 10 · 2018: 14 · 2017: 10 · 2016: 9 · 2015: 9 · 2014: 14 · 2013: 19 · 2012: 10
FWCI
5.15
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Rutgers University Community Repository (Rutgers University) (submittedVersion)
Funders
  • National Institute of Mental Health (R37MH041414)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK045024, R01DK048321, R37DK048321, R01DK057768, P60DK020541)
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
STAT3, leptin, hypothalamus, dietary intake, glucose homeostasis, hepatic insulin resistance, leptin receptor, hepatic glucose metabolism, db/db mice
MeSH terms
Animals, Appetite Regulation, Female, Glucose, Insulin Resistance, Luteinizing Hormone, Liver, Male, Mice, Inbred C57BL, Signal Transduction, Rats, Sprague-Dawley, Mice, Knockout, Leptin, STAT3 Transcription Factor, Mice, Rats

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