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Identification of cell surface markers to differentiate rat endothelial and fibroblast cells using lectin arrays and LC-ESI-MS/MS. Anal Chem 2008 Nov 01;80(21):8269-75

Date

09/30/2008

Pubmed ID

18821777

Pubmed Central ID

PMC2950091

DOI

10.1021/ac801390b

Scopus ID

2-s2.0-55549110908 (requires institutional sign-in at Scopus site)   8 Citations

Abstract

Vascular endothelial cells located at the inner surface of blood vessels are a key component in angiogenesis and are employed as a primary cell type in the study of angiogenesis. These endothelial cells are, however, easily contaminated with fibroblast cells, which are located in proximity to the endothelial cells, during their isolation from tissue. It is thus important to find markers to distinguish the two cell types. In the present work, lectin arrays were prepared using aldehyde-terminated self-assembled monolayers (SAMs) and utilized to explore cell surface carbohydrate expression patterns on endothelial and fibroblast cells. It was found that the lectins Griffonia simplicifolia II (GS II) and Ulex europaeus agglutinin I (UEA I) selectively bind to rat fibroblast cells and not to rat endothelial cells. GS II-binding glycoproteins on fibroblast cells, which are potential cell surface markers to differentiate endothelial and fibroblast cells, were captured on a GS II lectin column and analyzed by LC-ESI-MS/MS. Six candidate cell surface glycoproteins were identified. Differential expression was confirmed by Western blot analysis for two of these proteins, lysosome-associated membrane glycoprotein-1 and transmembrane glycoprotein NMB.

Author List

Lee JE, Mirza SP, Didier DN, Scalf M, Olivier M, Greene AS, Smith LM



MESH terms used to index this publication - Major topics in bold

Animals
Biomarkers
Carbohydrates
Cell Membrane
Cells, Cultured
Chromatography, Liquid
Endothelial Cells
Fibroblasts
Lectins
Protein Array Analysis
Rats
Spectrometry, Mass, Electrospray Ionization
Tandem Mass Spectrometry