Intercellular adhesion molecule 3, a third adhesion counter-receptor for lymphocyte function-associated molecule 1 on resting lymphocytes.
Recent studies suggest that some T and B lymphocyte cell lines bind to the integrin lymphocyte function-associated molecule 1 (LFA-1) chiefly through a pathway independent of its two known counter-receptors, intercellular adhesion molecules (ICAMs)-1 and -2. A monoclonal antibody (mAb) was raised that, in combination with blocking mAb to ICAM-1 and ICAM-2, can completely inhibit binding of these cell lines to purified LFA-1. This third ligand, designated ICAM-3 based on its functional relatedness to ICAM-1 and -2, is a highly glycosylated protein of 124,000 Mr. It is well expressed on all leukocytes and absent from endothelial cells. In assays of adhesion of resting lymphocytes to purified LFA-1, ICAM-3 is by far the most functionally important ICAM, implying an important role for ICAM-3 in the generation of immune responses.
de Fougerolles
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Department of Pathology, Harvard Medical School, Boston, Massachusetts.
Springer
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D000818:Animals; D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D000943:Antigens, Differentiation; D002448:Cell Adhesion; D015815:Cell Adhesion Molecules / Q000032:analysis / Q000276:immunology*; D002460:Cell Line; D002478:Cells, Cultured; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D016169:Lymphocyte Function-Associated Antigen-1 / Q000276:immunology* / Q000302:isolation & purification; D051379:Mice; D008807:Mice, Inbred BALB C / Q000276:immunology; D009504:Neutrophils / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D000943:Antigens, Differentiation; D015815:Cell Adhesion Molecules; C483616:ICAM3 protein, human; D016169:Lymphocyte Function-Associated Antigen-1