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Lymphocyte Isolation from Human Skin for Phenotypic Analysis and Ex Vivo Cell Culture
10:31

Lymphocyte Isolation from Human Skin for Phenotypic Analysis and Ex Vivo Cell Culture

Published on: April 8, 2016

Interaction of interferons with skin reactive cytokines: from interleukin-1 to interleukin-8

J Van Damme1, G Opdenakker

  • 1Rega Institute for Medical Research, University of Leuven, Belgium.

The Journal of Investigative Dermatology
|December 1, 1990
PubMed

Insights

Skin cells produce cytokines like interferon-beta (IFN-beta), interleukin-6 (IL-6), and interleukin-8 (IL-8). Dermal fibroblasts are key in regulating skin

Area of Science:

  • Immunology
  • Dermatology
  • Cell Biology

Background:

  • The skin hosts a significant population of cells involved in cytokine production.
  • Interleukin-1 (IL-1) and tumor necrosis factor-alpha (TNF-alpha) are primary cytokines with diverse roles in skin.
  • Cytokines like interferon-beta (IFN-beta), IL-6, and IL-8 are crucial mediators of skin's immune response.

Purpose of the Study:

  • To investigate the production of IFN-beta, IL-6, and IL-8 by skin fibroblasts and epithelial cells.
  • To determine the role of IL-1 and TNF-alpha in modulating cytokine production and fibroblast activity.
  • To elucidate the involvement of specific cytokines in antiviral activity, cell growth, and inflammatory responses within the skin.

Main Methods:

  • Stimulation of dermal fibroblasts and epidermal cells with IL-1 and TNF-alpha.
  • Measurement of IFN-beta, IL-6, and IL-8 production.
  • Assessment of antiviral activity and fibroblast growth.
  • Evaluation of IL-8's role in neutrophilic granulocyte chemotaxis and IL-1-induced skin reactivity.

Main Results:

  • Antiviral activity in fibroblasts is mediated by IFN-beta, not IL-6.
  • IL-1 and TNF-alpha stimulate dermal fibroblast growth independently of IFN-beta or IL-6.
  • Dermal fibroblasts are potent producers of IL-6 and IL-8 in response to IL-1, double-stranded RNA, or virus, more so than epidermal cells.
  • IL-8 acts as an early skin factor for neutrophil chemotaxis, and IL-1-induced delayed skin reactivity is likely mediated by IL-8 release.

Conclusions:

  • Cytokine interactions are significant within the skin microenvironment.
  • Dermal fibroblasts play a pivotal role in orchestrating the skin's non-specific host defense mechanisms.
  • Specific cytokines mediate distinct functions, including antiviral defense, cell proliferation, and inflammatory cell recruitment.

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