Minireview: new molecular mediators of glucocorticoid receptor activity in metabolic tissues

Rucha Patel1, Jasmine Williams-Dautovich, Carolyn L Cummins

  • 1Department of Pharmaceutical Sciences (R.P., J.W-D., C.L.C.), University of Toronto, Toronto, Ontario, M5S 3M2, Canada; and Banting and Best Diabetes Centre (C.L.C.), Toronto, Ontario M5G 2C4 Canada.

Insights

Glucocorticoid receptor (GR) drugs effectively treat inflammation but cause side effects. Recent discoveries reveal tissue-specific modulators that could improve GR therapy by minimizing unwanted metabolic impacts.

Area of Science:

  • Endocrinology and Molecular Medicine
  • Pharmacology

Background:

  • The glucocorticoid receptor (GR) is a key target for treating severe inflammation.
  • Glucocorticoid excess causes well-known metabolic issues like hyperglycemia and obesity.
  • Understanding molecular mediators of GR action is crucial for safer therapies.

Purpose of the Study:

  • To review recent discoveries in tissue-selective modulators of glucocorticoid signaling.
  • To highlight molecular effects of GR activation in specific tissues.
  • To identify strategies for improving therapeutic efficacy while reducing side effects.

Main Methods:

  • Literature review of recent research on glucocorticoid signaling.
  • Focus on molecular mechanisms and tissue-specific effects.
  • Emphasis on modulators impacting liver, adipose tissue, muscle, and pancreas.

Main Results:

  • Identification of specific protein mediators influencing glucocorticoid response.
  • Elucidation of downstream molecular effects of GR activation in key metabolic tissues.
  • Understanding how these mediators contribute to unwanted side effects.

Conclusions:

  • Tissue-selective modulators offer potential for tailored GR therapies.
  • Targeting these modulators may improve treatment efficacy for inflammatory conditions.
  • Minimizing metabolic side effects is achievable through a deeper understanding of GR signaling pathways.

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