In vitro cytokine modulation of intercellular adhesion molecule-1 expression on systemic sclerosis dermal fibroblasts

Pathobiology. 1994;62(2):73-81. doi: 10.1159/000163881.


Our objective was to study the regulation of intercellular adhesion molecule-1 (ICAM-1) expression by cytokines on cultured fibroblasts obtained from systemic sclerosis and normal skin. ICAM-1 expression on dermal fibroblasts obtained from diffuse systemic sclerosis patients with early disease (< or = 2 years) and normal dermal fibroblasts incubated with and without cytokines was measured by radioimmunoassay and flow cytometry. Systemic sclerosis dermal fibroblasts expressed lower basal levels of ICAM-1 than did normal dermal fibroblasts. Both the normal and systemic sclerosis dermal fibroblasts increased their cell surface expression of ICAM-1 in response to interleukin-1 beta (IL-1 beta), tumor necrosis factor-alpha (TNF-alpha), and interferon-gamma (IFN-gamma) in a dose-dependent fashion. Systemic sclerosis dermal fibroblasts appeared to be hyperresponsive to IL-1 beta, TNF-alpha, and IFN-gamma. ICAM-1 expression in response to cytokine stimulation increased to a greater degree on systemic sclerosis compared to normal dermal fibroblasts. The enhanced ICAM-1 expression may play a role in the retention of leukocytes involved in systemic sclerosis skin lesions.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Adult
  • Cells, Cultured
  • Cytokines / pharmacology*
  • Female
  • Fibroblasts / metabolism
  • Flow Cytometry
  • Humans
  • Intercellular Adhesion Molecule-1 / biosynthesis*
  • Interferon-gamma / pharmacology
  • Interleukin-1 / pharmacology
  • Male
  • Middle Aged
  • Radioimmunoassay
  • Scleroderma, Systemic / metabolism*
  • Skin / metabolism*
  • Tumor Necrosis Factor-alpha / pharmacology


  • Cytokines
  • Interleukin-1
  • Tumor Necrosis Factor-alpha
  • Intercellular Adhesion Molecule-1
  • Interferon-gamma