Leucocyte Endothelial Cell Adhesion: a Study comparing Human Umbilical Vein Endothelial Cells and the Endothelial Cell Line EA‐hy‐926
- 1 September 1993
- journal article
- research article
- Published by Wiley in Scandinavian Journal of Immunology
- Vol. 38 (3), 279-286
- https://doi.org/10.1111/j.1365-3083.1993.tb01726.x
Abstract
EA-hy-926 is a cell line produced by hybridizing human umbilical vein endothelial cells (HUVEC) and the epithelial cell line A549. To establish whether EA-hy-926 could be used as a model for endothelial cells (EC) in leucocyte-EC adhesion interactions, the effect of interleukin-4 (IL-4), tumour necrosis factor (TNF) or interferon-gamma (IFN) stimulation on their adhesiveness and expression of E-selectin, vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) was compared with that of HUVEC and A549. Although HUVEC exhibited increased adhesiveness and adhesion molecule expression with IL-4, TNF or IFN, EA-hy-926 exhibited these responses only with TNF. CD11/CD18-dependent binding accounted for a significant component of basal binding to HUVEC and EA-hy-926, but did not account for the increased binding of T cells, JY, J6, ICH-BJ or ICH-KM cell lines to TNF-stimulated monolayers. At least part of the CD11/CD18-independent adhesion was attributable to VCAM-1 induction on HUVEC and EA-hy-926. TNF-stimulation also induced E-selectin expression on EA-hy-926 and HUVEC and an accompanying increase in neutrophil (PMN) binding. The EA-hy-926 cells used in this study, therefore, showed responses similar to HUVEC when stimulated with TNF but not when stimulated with IL-4 or IFN.Keywords
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