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The neutrophil-specific antigen CD177 is a counter-receptor for platelet endothelial cell adhesion molecule-1 (CD31).
J. Biol. Chem. 282, 23603-23612 (2007)
Human neutrophil-specific CD177 (NB1 and PRV-1) has been reported to be up-regulated in a number of inflammatory settings, including bacterial infection and granulocyte-colony-stimulating factor application. Little is known about its function. By flow cytometry and immunoprecipitation studies, we identified platelet endothelial cell adhesion molecule-1 (PECAM-1) as a binding partner of CD177. Real-time protein-protein analysis using surface plasmon resonance confirmed a cation-dependent, specific interaction between CD177 and the heterophilic domains of PECAM-1. Monoclonal antibodies against CD177 and against PECAM-1 domain 6 inhibited adhesion of U937 cells stably expressing CD177 to immobilized PECAM-1. Transendothelial migration of human neutrophils was also inhibited by these antibodies. Our findings provide direct evidence that neutrophil-specific CD177 is a heterophilic binding partner of PECAM-1. This interaction may constitute a new pathway that participates in neutrophil transmigration.
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Publication type
Article: Journal article
Document type
Scientific Article
Language
english
Publication Year
2007
HGF-reported in Year
0
ISSN (print) / ISBN
0021-9258
e-ISSN
1083-351X
Quellenangaben
Volume: 282,
Issue: 32,
Pages: 23603-23612
Publisher
American Society for Biochemistry and Molecular Biology
Reviewing status
Peer reviewed
Institute(s)
Institute of Pancreatic Islet Research (IPI)
PubMed ID
17580308
Erfassungsdatum
2007-12-31