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Related Experiment Videos

Rapid glucocorticoid effects on immune cells.

Frank Buttgereit1, Alexander Scheffold

  • 1Department of Rheumatology and Clinical Immunology, Charité University Hospital, Humboldt University, Berlin, Germany. frank.buttgereit@charite.de

Steroids
|April 19, 2002
PubMed
Summary

Glucocorticoids exhibit rapid, non-genomic effects via cytosolic or membrane receptors and direct membrane interactions. Research highlights membrane-bound glucocorticoid receptors (mGCR) in human cells, suggesting new signaling pathways.

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Area of Science:

  • Immunology and Pharmacology
  • Cellular Biology
  • Molecular Endocrinology

Background:

  • Glucocorticoids are known for genomic effects, but rapid, non-genomic actions are also significant.
  • Three proposed mechanisms for rapid effects include cytosolic glucocorticoid receptor (cGCR) interaction, non-specific membrane interactions, and membrane-bound glucocorticoid receptor (mGCR) signaling.
  • Previous studies demonstrated mGCRs primarily on lymphoma cells.

Purpose of the Study:

  • To review current data on rapid, non-genomic glucocorticoid effects, particularly in immune cells.
  • To discuss the evidence for different proposed mechanisms of rapid glucocorticoid action.
  • To highlight the emerging evidence for mGCRs in human cells.

Main Methods:

  • Review of existing scientific literature and data on glucocorticoid receptor mechanisms.

Related Experiment Videos

  • Analysis of studies investigating rapid cellular signaling pathways induced by glucocorticoids.
  • Examination of evidence for membrane-bound glucocorticoid receptors in various human cell types.

    • Main Results:

    • Glucocorticoid binding to cGCR can trigger rapid intracellular signaling via associated proteins like Src.
    • Non-specific membrane interactions can alter cellular functions by affecting ion transport and mitochondrial proton leak.
    • First evidence suggests physiological expression of mGCRs on human cells beyond lymphoma.

    Conclusions:

    • Rapid glucocorticoid effects involve complex signaling pathways beyond traditional genomic actions.
    • The role of mGCRs in human cells is an area of active investigation with potential clinical relevance.
    • Further research is needed to clarify the therapeutic implications of these rapid glucocorticoid effects on immune cells.