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Cross-linking of brain endothelial intercellular adhesion molecule (ICAM)-1 induces association of ICAM-1 with detergent-insoluble cytoskeletal fraction

Amos, Claire; Romero, Ignacio A.; Schulze, Charlotte; Rousell, Jonathan; Pearson, Jeremy D.; Greenwood, John and Adamson, Peter (2001). Cross-linking of brain endothelial intercellular adhesion molecule (ICAM)-1 induces association of ICAM-1 with detergent-insoluble cytoskeletal fraction. Arteriosclerosis, Thrombosis, and Vascular Biology, 21 pp. 810–816.

URL: http://atvb.ahajournals.org/cgi/content/full/21/5/...
DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1161/​01.ATV.21.5.810
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Abstract

Intercellular adhesion molecule (ICAM)-1 plays a vital role in the process of leukocyte transmigration through endothelial cell (EC) barriers and has been shown to mediate signal transduction events in ECs induced either by its cross-linking or by the binding of T lymphocytes. Immunoblotting of ICAM-1 of Triton X-100 detergent fractions demonstrated that the majority of ICAM-1 was contained within the detergent-soluble fraction (noncytoskeletal associated) under basal conditions. After cross-linking of endothelial ICAM-1 with monoclonal antibody or coculture with T lymphocytes, EC ICAM-1 was observed to partition with a Triton X-100-insoluble (cytoskeletal associated) fraction in a dose- and time-dependent manner. Redistribution of ICAM-1 was specific, inasmuch as no association with the Triton X-100-insoluble fraction was observed after cross-linking of vascular cell adhesion molecule-1, nor did cross-linking of ICAM-1 result in a redistribution of the platelet and EC adhesion molecule. ICAM-1 association with the endothelial cytoskeleton after cross-linking was unaffected after treatment of the cells with cytochalasin D, C3-transferase, removal of extracellular calcium ions, or chelation of intracellular calcium ions. These data show that ICAM-1 colocalizes with the endothelial cytoskeleton and associates with a detergent-insoluble fraction after cross-linking.

Item Type: Journal Article
Copyright Holders: 2001 American Heart Association
Keywords: endothelium; intercellular adhesion molecule-1; cytoskeleton
Academic Unit/Department: Science > Life, Health and Chemical Sciences
Interdisciplinary Research Centre: Biomedical Research Network (BRN)
Item ID: 8953
Depositing User: Ignacio A Romero
Date Deposited: 22 Aug 2007
Last Modified: 26 Jun 2014 09:11
URI: http://oro.open.ac.uk/id/eprint/8953
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