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[Immunophenotypic analysis of human endothelial cells].

Y Kubota1, T J Lawley

  • 1Department of Dermatology, Yamanashi Medical College.

Nihon Hifuka Gakkai Zasshi. the Japanese Journal of Dermatology
|September 1, 1990
PubMed
Summary

Human endothelial cells, particularly dermal microvascular cells, lack key immune markers but can be modulated. Gamma-interferon and other modifiers can induce specific cell adhesion molecules, suggesting a role in skin inflammation.

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Area of Science:

  • Immunology
  • Cell Biology
  • Dermatology

Context:

  • Limited understanding of human endothelial cell immunology.
  • Comparison of dermal microvascular endothelial cells (HDMEC) and umbilical vein endothelial cells (HUVEC).
  • Investigation of biologic response modifiers' effects on endothelial cell phenotype.

Purpose:

  • To characterize the immunologic phenotype of HDMEC and HUVEC.
  • To determine the capacity of gamma-interferon (gamma-IFN), IL-1, and TNF to modulate endothelial cell phenotypes.
  • To explore the potential role of endothelial cells in cutaneous inflammation.

Summary:

  • FACS analysis revealed HDMEC and HUVEC lack many immune markers (e.g., IL-2 receptor, HLA-DR) but express beta 2-microglobulin and DAF.
  • Gamma-IFN dose-dependently induced HLA-DR antigens on both endothelial cell types.

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  • Both cell types possess Cell Adhesion Molecules (CAMs) like ICAM-1, CD44, and LFA-3. Gamma-IFN, IL-1, and TNF upregulated ICAM-1 expression.

    • Impact:

    • Endothelial cells, especially dermal microvascular ones, possess inducible immune functions.
    • Findings suggest endothelial cells play significant roles in various cutaneous inflammatory conditions.
    • This research provides a foundation for understanding endothelial cell involvement in skin immunity and inflammation.