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The Journal of Immunology, Vol 147, Issue 6 1831-1836, Copyright © 1991 by American Association of Immunologists

ARTICLES

Binding of human rhinovirus and T cells to intercellular adhesion molecule-1 on human fibroblasts. Discordance between effects of IL-1 and IFN-gamma

TH Piela-Smith, L Aneiro and JH Korn
Division of Rheumatic Diseases, V.A. Medical Center, Newington, CT 06111.

Intercellular adhesion molecule-1 (ICAM-1) is found on the surface of many hemopoietic and non-hemopoietic cells and can function as an adhesive ligand for the integrin, leukocyte function associated molecule-1 (LFA-1, CD11a/CD18). ICAM-1/LFA-1 interaction is thought to be of importance in many immune mediated cell-cell adhesion reactions. Recently, the major human rhinovirus (HRV) receptor has been identified as ICAM-1. HRV has been shown to bind specifically to ICAM-1 on transfected COS cells and to purified ICAM-1, which has been adsorbed to plastic microtiter wells. We have compared the ability of ICAM-1 expressed on the surface of human fibroblasts (FB) to function as a receptor for HRV as well as a receptor for LFA-1-bearing human T lymphocytes. We show that FB stimulation by the cytokines IFN-gamma or IL-1, both known inducers of ICAM-1 synthesis and expression in FB, induced an increase in HRV binding to treated cells, which could be inhibited by antibody to ICAM-1. In contrast, only IFN-gamma and not IL- 1 treatment of FB resulted in an increased adhesion of T lymphocytes. Binding of HRV to IFN-gamma-treated FB inhibited the subsequent adhesion of T cells. We also show that prior stimulation of FB with IL- 1 enhanced the adhesion of HRV to IFN-gamma-stimulated cells, although IL-1 pretreatment was inhibitory for T cell adhesion. As these two cytokines both up-regulate ICAM-1 on the surface of human FB, the contrasting effects of IFN-gamma and IL-1 on human FB ICAM-1 adhesion to HRV and to LFA-1 suggest that qualitative as well as quantitative alterations of the ICAM-1 molecule may contribute to its specificity of ligand recognition.


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