Korean J Pathol.  1995 Dec;29(6):746-755.

Expression of ICAM-1 on Short-Term Cultured Human Keratinocytes: Modulation by IFN-gamma, UVB and retinoic acid

Affiliations
  • 1Department of Pathology, Kosin University Medical College, Pusan, Korea.

Abstract

Intercellular adhesion molecule I(ICAM-1; CD 54), a 90 kD glycoprotein, counter-receptor for lymphocyte function-associated antigen-I(LFA-1) on T-cells, is critically important to a wide variety of adhesion-dependent leukocyte functions, including antigen presentation and target cell lysis. Induction of ICAM-1 on the keratinocytes(KCs) is an important regulator in initiation, maintenance, and resolution of cutaneous inflammation, which is modulated with cytokines produced by activated T-lymphocytes. This study was designed to further our understanding on modulation effects of ultraviolet B(UVB), gamma interferon(IFN-;v), and retinoic acid(all trans) upon expression of ICAM-1 on cultured human KCs, with emphasis on their correlation. Cell surface expression of ICAM-1 in cultured human KCs was analyzed with the use of indirect immunofluorescence and fluorescence activating cell sorting(FACS) by flow cytometry. The results of this study were as follows: 1) Expression of ICAM-1 was significantly induced with IFN-,-(20 U/ml)(p<0.005). 2) UVB irradiation of 30mJ/cm2 significantly suppressed ICAM-1 expression of KCs 24 hours after irradiation(p<0.05). However, at 72 hours after irradiation, ICAM-1 expression of KCs was considerably increased in comparison to that of initial phase (24 hours after irradiation). 3) High concentrations(10(-5)M) of retinoic acid reduced UVB-induced expression of ICAM-1 in late phase(72 hours after irradiation), although retinoic acid showed induction effect of ICAM- I expression of KCs. In summary, these results indicate that ICAM- I may contribute to the biphasic effect of UVB on delayed hypersensitivity in vivo. Also, retinoic acid, a vitamin A derivative, may have a cutaneous photoprotective effect through a regulation of UVB-induced ICAM-1 expression on the KCs.

Keyword

intercellular adhesion molecule-1; Keratinocytes; Ultraviolet B; Gamma interferoii; Retinoic acid

MeSH Terms

Antigen Presentation
Cytokines
Flow Cytometry
Fluorescence
Fluorescent Antibody Technique, Indirect
Glycoproteins
Humans*
Hypersensitivity, Delayed
Inflammation
Intercellular Adhesion Molecule-1*
Keratinocytes*
Leukocytes
Lymphocytes
T-Lymphocytes
Tretinoin*
Vitamin A
Cytokines
Glycoproteins
Intercellular Adhesion Molecule-1
Tretinoin
Vitamin A
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