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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6157
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pubmed:dateCreated |
1988-3-23
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pubmed:databankReference | |
pubmed:abstractText |
Antigen-specific cell contacts in the immune system are strengthened by antigen-nonspecific interactions, mediated in part by lymphocyte-function associated (LFA) antigens. The LFA-1 antigen is widely expressed on cells of haematopoietic origin and is a major receptor of T cells, B cells and granulocytes. LFA-1 mediates the leukocyte adhesion reactions underlying cytolytic conjugate formation, helper T-cell interactions, and antibody-dependent killing by natural killer cells and granulocytes. Recently, ICAM-1 (intercellular adhesion molecule-1) has been defined as a ligand for LFA-1. Monoclonal antibodies to ICAM-1 block T lymphocyte adhesion to fibroblasts and endothelial cells and disrupt the interaction between cytotoxic T cells and target cells. In addition, purified ICAM-1 reconstituted into artificial membranes binds LFA-1+ cells. ICAM-1 is found on leukocytes, fibroblasts, epithelial cells and endothelial cells and its expression is regulated by inflammatory cytokines. LFA-1 has been placed in the integrin family of cell surface receptors by virtue of the high sequence similarity between the LFA-1 and integrin beta chains. The adhesion ligands of the integrin family are glycoproteins bearing the Arg-Gly-Asp (RGD) sequence motif, for example, fibronectin, fibrinogen, vitronectin and von Willebrand factor. Here we show that a complementary DNA clone ICAM-1 contains no RGD motifs, but instead is homologous to the neural cell adhesion molecule NCAM.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
|
pubmed:issn |
0028-0836
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
18
|
pubmed:volume |
331
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
624-7
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3340213-Amino Acid Sequence,
pubmed-meshheading:3340213-Antigens, Surface,
pubmed-meshheading:3340213-Base Sequence,
pubmed-meshheading:3340213-Cell Adhesion Molecules,
pubmed-meshheading:3340213-DNA,
pubmed-meshheading:3340213-Humans,
pubmed-meshheading:3340213-Molecular Sequence Data,
pubmed-meshheading:3340213-Recombinant Proteins,
pubmed-meshheading:3340213-Sequence Homology, Nucleic Acid
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pubmed:year |
1988
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pubmed:articleTitle |
ICAM, an adhesion ligand of LFA-1, is homologous to the neural cell adhesion molecule NCAM.
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pubmed:affiliation |
Department of Molecular Biology, Harvard Medical School, Massachusetts General Hospital, Boston 02114.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
|