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Biological Chemistry

Editor-in-Chief: Brüne, Bernhard

Editorial Board Member: Buchner, Johannes / Lei, Ming / Ludwig, Stephan / Sies, Helmut / Turk, Boris / Wittinghofer, Alfred

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IMPACT FACTOR 2015: 2.710
Rank 142 out of 289 in category Biochemistry & Molecular Biology in the 2015 Thomson Reuters Journal Citation Report/Science Edition

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1437-4315
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Volume 380, Issue 6 (Jun 1999)

Issues

Functional Characterization of Atherosclerosis-Associated Ser128Arg and Leu554Phe E-Selectin Mutations

K. Wenzel / R. Stahn / A. Speer / K. Denner / C. Gläser / M. Affeldt / M. Moobed / A. Scheer / G. Baumann / S.B. Felix
Published Online: 2005-06-01 | DOI: https://doi.org/10.1515/BC.1999.082

Abstract

The cellular adhesion molecule E-selectin is expressed on activated endothelial cells, and is involved in the process of adherence of blood cells to vessel endothelium in inflammatory events such as atherosclerosis. In a recent study we found a Ser128Arg mutation in the EGF domain as well as a Leu554Phe mutation in the membrane domain of E-selectin. We also established increased frequencies of both mutations among young patients with severe coronary atherosclerosis. In the present study we investigated the influence of these mutations on cell adhesion and on the release of soluble E-selectin. Mutants were created by site-directed mutagenesis and COS cells were transfected with E-selectin, either wild-type or mutant. Antibody-binding studies and cell-adhesion assays were performed on transfected COS cells and on interleukin-1 beta-stimulated HUVECs. Soluble E-selectin in supernatants of wild type and Leu554Phe mutant-transfected COS cells was measured by ELISA. We discovered significant differences in the strength of HL-60 cell adhesion for the Ser128Arg mutant: in comparison with the wild type, the strength of adhesion to the mutant was reduced on transfected COS cells (P < 0.01) as well as on stimulated HUVECs (P < 0.01). Significantly diminished release of soluble E-selectin was detected for the Leu554Phe membrane domain mutant, in comparison with the wild type. In summary, the mutations studied here influence the E-selectin function in vitro and may be considered as one of the risk factors involved in the complex pathogenesis of atherosclerosis.

About the article

Published Online: 2005-06-01

Published in Print: 1999-06-01


Citation Information: Biological Chemistry, ISSN (Print) 1431-6730, DOI: https://doi.org/10.1515/BC.1999.082. Export Citation

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