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- Title
Effect of <em>Salmonella</em> Bacteria on the Interaction of Human NK Cells with Endothelial Cells.
- Authors
Pinola, M.; Saksela, E.
- Abstract
Leukocyte endothelial cell adhesion and its regulation are essential and complex initial aspects of lymphocyte migration. Various factors (IL-1, TNF-α, IFN-γ etc.) have been shown to increase the endothelial adhesiveness for human lymphocytes, including natural killer cells (NK cells). In this work we have demonstrated that pretreatment of either the target endothelial cell monolayers or the binding LGL-cells with mR595 Salmonella Minnesota bacteria results in a substantial increase in the adhesiveness of LGL-cells lo endothelial cells. The increase was more prominent when the endothelial cells were treated than when the adhering LGL-cells were similarly pretreated. The adhering cell population was significantly enriched with CD56 (Leu 19) and CD 16 positive cells, i.e. cells with NK cell phenotype, when the lymphocyte population was pretreated. However, the pretreatment of EC resulted in a non-specific increase in FC adhesiveness since the relative proportion of CD56+ (Leul9), CD16+ and CD3+ cells among the adhering cells did not significantly differ from the starting population. The bidirectional enhancement of adhesiveness of human NK cells to endothelium by mR595 Salmonella bacteria may be significant in the host defense responses against microbial infections.
- Subjects
ENTEROBACTERIACEAE; SALMONELLA; CELL adhesion; CELL communication; MONOMOLECULAR films; GENOTYPE-environment interaction
- Publication
Scandinavian Journal of Immunology, 1991, Vol 33, Issue 6, p729
- ISSN
0300-9475
- Publication type
Article
- DOI
10.1111/j.1365-3083.1991.tb02547.x