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Related Experiment Videos

Glucocorticoid receptor localization in human epidermal cells

M Serres1, J Viac, D Schmitt

  • 1INSERM Unité 346, Clinique Dermatologique, Hôpital Edouard-Herriot, Lyon, France.

Archives of Dermatological Research
|March 1, 1996
PubMed
Summary

Glucocorticoid receptors (GR) are highly expressed in cultured human keratinocytes and Langerhans cells, indicating they are key targets in the epidermis. These findings clarify the cellular distribution of GR in skin tissues.

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Area of Science:

  • Dermatology
  • Immunology
  • Cell Biology

Background:

  • Glucocorticoids are widely used immunosuppressive therapies.
  • Glucocorticoid receptors (GR) mediate these effects.
  • GR localization in skin cells requires further investigation.

Purpose of the Study:

  • To determine the tissue and cellular distribution of glucocorticoid receptors (GR) in human skin.
  • To identify the primary epidermal targets of glucocorticoids.

Main Methods:

  • Immunohistochemistry using polyclonal rabbit anti-human GR antibodies on skin biopsy specimens.
  • Analysis of freshly isolated and cultured human epidermal cells.
  • Fluorescence-activated cell sorting (FACS) analysis of isolated keratinocytes.

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Main Results:

  • Immunoreactive GR were faintly detected in differentiated cells, stratum granulosum, and corneocytes.
  • GR were highly expressed in cultured keratinocytes, Langerhans cells, and certain cell lines.
  • Melanocytes showed lower GR expression compared to keratinocytes and Langerhans cells.

Conclusions:

  • The main targets of glucocorticoids in the epidermis are basal keratinocytes and Langerhans cells.
  • This study establishes the cellular distribution of GR within the human epidermis.
  • Findings provide a basis for understanding glucocorticoid action in skin conditions.