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Peroxisome proliferator-activated receptor-gamma: too much of a good thing causes harm

Terrie-Anne Cock1, Sander M Houten, Johan Auwerx

  • 1Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/Université Louis Pasteur, 67404 Illkirch, France.

EMBO Reports
|February 3, 2004
PubMed

Insights

Modulating peroxisome proliferator-activated receptor-gamma (PPARgamma) activity, rather than full activation, may be key for treating metabolic disorders. This approach could improve glucose balance and prevent fat tissue growth.

Area of Science:

  • Endocrinology
  • Molecular Biology
  • Metabolic Research

Background:

  • The nuclear receptor peroxisome proliferator-activated receptor-gamma (PPARgamma) regulates gene transcription in response to dietary fatty acids.
  • PPARgamma activators are used in diabetes treatment due to their insulin-sensitizing effects.
  • Recent genetic studies and ligand characterization have advanced our understanding of PPARgamma function.

Purpose of the Study:

  • To propose a novel therapeutic strategy for metabolic disorders by modulating PPARgamma activity.
  • To investigate the potential of fine-tuning PPARgamma signaling for improved metabolic health.

Main Methods:

  • Review of recent human and mouse genetic studies on PPARgamma.
  • Analysis of newly characterized PPARgamma ligands.
  • Conceptual proposal based on current understanding of PPARgamma pathways.

Main Results:

  • Dietary fatty acids act as PPARgamma ligands, influencing gene transcription.
  • PPARgamma activation enhances insulin sensitivity.
  • New insights suggest a shift from activation to modulation of PPARgamma.

Conclusions:

  • Modulating PPARgamma activity, instead of solely activating it, may offer a more effective treatment for metabolic disorders.
  • This strategy aims to enhance glucose homeostasis while mitigating unwanted adipogenesis.

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