Cited by 140Adipose Tissue and MetabolismRegulation of Appetite and ObesityAdipokines, Inflammation, and Metabolic Diseases

Enhanced Leptin-Stimulated Pi3k Activation in the CNS Promotes White Adipose Tissue Transdifferentiation

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Plum, Leona, Rother, Eva, Münzberg, Heike, Wunderlich, F. Thomas, Morgan, Donald A., Hampel, Brigitte, Shanabrough, Marya, Janoschek, Ruth +7 more·2007·Cell Metabolism

Abstract

The contribution of different leptin-induced signaling pathways in control of energy homeostasis is only partly understood. Here we show that selective Pten ablation in leptin-sensitive neurons (Pten(DeltaObRb)) results in enhanced Pi3k activation in these cells and reduces adiposity by increasing energy expenditure. White adipose tissue (WAT) of Pten(DeltaObRb) mice shows characteristics of brown adipose tissue (BAT), reflected by increased mitochondrial content and Ucp1 expression resulting from enhanced leptin-stimulated sympathetic nerve activity (SNA) in WAT. In contrast, leptin-deficient ob/ob-Pten(DeltaObRb) mice exhibit unaltered body weight and WAT morphology compared to ob/ob mice, pointing to a pivotal role of endogenous leptin in control of WAT transdifferentiation. Leanness of Pten(DeltaObRb) mice is accompanied by enhanced sensitivity to insulin in skeletal muscle. These data provide direct genetic evidence that leptin-stimulated Pi3k signaling in the CNS regulates energy expenditure via activation of SNA to perigonadal WAT leading to BAT-like differentiation of WAT.

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Crossref · 10.1016/j.cmet.2007.10.012

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  • Selective PTEN ablation in leptin-expressing neurons results in reduced adiposity and increased energy expenditure due at least in part to increased fatty acid oxidation in white adipose tissue.

    “Selective PTEN ablation in leptin-expressing neurons results in a phenotype characterized by reduced adiposity and increased energy expenditure due, at least in part, to increased fatty acid oxidation in WAT (144)”
  • Selective PTEN ablation in leptin-expressing neurons is associated with increased sympathetic nerve activity to white adipose tissue and leads to remodeling of white adipose tissue toward brown adipose tissue characteristics, including increased mitochondrial content and UCP1 expression.

    “associated with increased sympathetic nerve activity to WAT and leading to a remodeling of WAT to take on characteristics of BAT, including increased mitochondrial content and UCP1 expression (144).”

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Authors
Plum, L., Rother, E., Münzberg, H., Wunderlich, F. T., Morgan, D. A., Hampel, B., Shanabrough, M., Janoschek, R., Könner, A. C., Alber, J., Suzuki, A., Krone, W., Horvath, T. L., Rahmouni, K., & Brüning, J. C.
Affiliations
  • University of Cologne (DE)
  • University of Michigan (US)
  • University of Iowa (US)
  • Yale University (US)
  • Akita University (JP)
Corresponding author
Brüning, Jens C.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2007-12
Volume
6
Issue
6
Pages
431-445
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2160824260
Cited by
138
References
34
Citations by year
2026: 1 · 2025: 3 · 2024: 7 · 2023: 2 · 2022: 4 · 2021: 13 · 2020: 8 · 2019: 5 · 2018: 8 · 2017: 8 · 2016: 9 · 2015: 6 · 2014: 13 · 2013: 8 · 2012: 11
FWCI
4.88
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
Bundesministerium für Bildung und Forschung
Topics
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
leptin, PI3K signaling, PTEN, white adipose tissue, energy expenditure, sympathetic activity, leptin receptor neurons, ob/ob mice, insulin sensitivity, skeletal muscle, mitochondrial content, UCP1, energy homeostasis
MeSH terms
Animals, Adipose Tissue, Brown, Central Nervous System, Enzyme Activation, Glucose, Mice, Mutant Strains, Mice, Obese, Mice, Transgenic, Thinness, Signal Transduction, Mice, Knockout, Phosphatidylinositol 3-Kinases, Leptin, PTEN Phosphohydrolase, Mice, Adipose Tissue, White, Cell Transdifferentiation

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