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Journal of Cell Science, Vol 93, Issue 1 163-172, Copyright © 1989 by Company of Biologists

JOURNAL ARTICLES

Saccharide expression on wounded endothelial cell monolayers in vitro

RY Ball, RW Stoddart, CJ Jones and MJ Mitchinson
Department of Pathology, University of Cambridge, UK.

Monolayer cultures of porcine aortic endothelial cells were used as a model of the endothelium of large arteries. Linear wounds were produced in such cultures by scraping and the subsequent sequence of events in nearby cells was analysed. The earliest detectable event was cellular spreading at the margins of the wounds (2 h) followed by cell migration (starting at 6-8 h) and cell proliferation in regions adjacent to the wound (16 h and later). Cell spreading was associated with the appearance of saccharides selectively at the spreading margins of the cells, which bound the lectins, ConA, LCA and PSA, and were sensitive to alpha-mannosidase. Terminal alpha-mannosyl residues were therefore present. The appearance of these saccharides suggests a mechanism by which monocytes might adhere to and/or migrate through the endothelium of vessels at sites of cellular response to injury.
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© The Company of Biologists Ltd 1989