PMID- 7698233 OWN - NLM STAT- MEDLINE DCOM- 19950428 LR - 20090929 IS - 0014-4827 (Print) IS - 0014-4827 (Linking) VI - 217 IP - 2 DP - 1995 Apr TI - The expression and release of adhesion molecules by human endothelial cell lines and their consequent binding of lymphocytes. PG - 329-35 AB - We report the characterization of a novel series of human endothelial cell lines (designated SGHEC) regarding the expression and release of adhesion molecules and their binding of lymphocytes. SGHEC expressed significant levels of intercellular adhesion molecule-1 (ICAM-1; CD54) which increased after stimulation with tumor necrosis factor-alpha (TNF alpha), interleukin-1 beta (IL-1 beta), or interferon-gamma (IFN-gamma). Vascular cell adhesion molecule-1 (VCAM-1; CD106) and E-selectin (CD62E) were not detectable on unstimulated SGHEC but substantial levels were expressed after stimulation with either TNF alpha or IL-1 beta but not with IFN-gamma. The increased expression of ICAM-1 and VCAM-1 was evident after 4 h stimulation and was even higher after 24 h; E-selectin was maximal after 4 h and returned almost to basal levels by 24 h. Substantial quantities of immunoreactive ICAM-1 and VCAM-1 also accumulated as soluble material in the supernatants of TNF alpha-stimulated SGHEC (VCAM-1 was substantially higher than ICAM-1), but E-selectin remained below the limits of detection. Various quantitative data suggest that this is a controlled release regulated by cytokine and provide support for a physiological function for these soluble molecules. Primary human lymphocytes and lymphoblastoid cell lines expressing lymphocyte function-associated antigen-1 (LFA-1) bound to SGHEC; this binding increased substantially after activation of either cell type. The binding was inhibited by monoclonal antibodies against LFA-1 and, to a lesser extent, ICAM-1, thus demonstrating the importance of these molecules in the observed binding; neither anti-VCAM-1 nor anti-E-selectin antibodies affected the binding. From these various data, we conclude that LFA-1/ICAM-1 interactions are partially responsible for the binding of lymphocytes to endothelial cells. The SGHEC lines should prove useful in investigating leukocyte-endothelial interactions and the mechanism of release of soluble adhesion molecules. FAU - Cartwright, J E AU - Cartwright JE AD - Department of Cellular and Molecular Sciences, St. George's Hospital Medical School, London, United Kingdom. FAU - Whitley, G S AU - Whitley GS FAU - Johnstone, A P AU - Johnstone AP LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Exp Cell Res JT - Experimental cell research JID - 0373226 RN - 0 (Cell Adhesion Molecules) RN - 0 (Cytokines) SB - IM MH - Cell Adhesion MH - Cell Adhesion Molecules/*metabolism MH - Cell Line/*metabolism MH - Cytokines/physiology MH - Endothelium, Vascular/*metabolism MH - Humans MH - Lymphocytes/*metabolism EDAT- 1995/04/01 00:00 MHDA- 1995/04/01 00:01 CRDT- 1995/04/01 00:00 PHST- 1995/04/01 00:00 [pubmed] PHST- 1995/04/01 00:01 [medline] PHST- 1995/04/01 00:00 [entrez] AID - S0014-4827(85)71094-4 [pii] AID - 10.1006/excr.1995.1094 [doi] PST - ppublish SO - Exp Cell Res. 1995 Apr;217(2):329-35. doi: 10.1006/excr.1995.1094.