Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1993-6-21
pubmed:abstractText
The monoclonal antibody 33B6 was found to be specific for the beta 1 integrin subunit. Treatment of leukocytes with this antibody induced a vigorous homotypic aggregation that had similar physiologic conditions as aggregation induced by a monoclonal antibody specific for the alpha 4 subunit. Expression of a beta 1 subunit on the cell surface was not sufficient for mAb 33B6-mediated aggregation to occur, since cells of the K562 erythroleukemia line failed to respond even though they expressed the beta 1 subunit and the 33B6 epitope. However, after transfection with cDNA encoding the alpha 4 subunit, K562 cells acquired the ability to aggregate in response to mAb 33B6 binding. By contrast, mAb 33B6 blocked cell binding to the endothelial surface protein vascular cell adhesion molecule-1 and the extracellular matrix protein fibronectin. These results suggest that the beta 1 epitope defined by mAb 33B6 may play a novel role in regulating leukocyte adhesive interactions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0730-2312
pubmed:author
pubmed:issnType
Print
pubmed:volume
51
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
465-78
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:7684386-Animals, pubmed-meshheading:7684386-Antibodies, Monoclonal, pubmed-meshheading:7684386-Base Sequence, pubmed-meshheading:7684386-Cell Adhesion Molecules, pubmed-meshheading:7684386-Cell Aggregation, pubmed-meshheading:7684386-Cell Line, Transformed, pubmed-meshheading:7684386-DNA, pubmed-meshheading:7684386-Epitopes, pubmed-meshheading:7684386-Fibronectins, pubmed-meshheading:7684386-Humans, pubmed-meshheading:7684386-Immunoglobulin G, pubmed-meshheading:7684386-Immunologic Deficiency Syndromes, pubmed-meshheading:7684386-Integrin alpha4beta1, pubmed-meshheading:7684386-Integrins, pubmed-meshheading:7684386-Leukemia, Erythroblastic, Acute, pubmed-meshheading:7684386-Leukocytes, pubmed-meshheading:7684386-Mice, pubmed-meshheading:7684386-Molecular Sequence Data, pubmed-meshheading:7684386-Recombinant Fusion Proteins, pubmed-meshheading:7684386-Transfection, pubmed-meshheading:7684386-Tumor Cells, Cultured, pubmed-meshheading:7684386-Vascular Cell Adhesion Molecule-1
pubmed:year
1993
pubmed:articleTitle
Homotypic leukocyte aggregation triggered by a monoclonal antibody specific for a novel epitope expressed by the integrin beta 1 subunit: conversion of nonresponsive cells by transfecting human integrin alpha 4 subunit cDNA.
pubmed:affiliation
Department of Immunology, University of Texas M.D. Anderson Cancer Center, Houston 77030.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't