Author:

Keywords:

natural killer cells, chemokines, chemotaxis, monocyte chemotactic protein-1, migration, large granular lymphocytes, cytokine, family, involvement, fibronectin, locomotion, adhesion, biology, invitro, binding, Science & Technology, Life Sciences & Biomedicine, Immunology, NATURAL KILLER CELLS, CHEMOKINES, CHEMOTAXIS, MONOCYTE CHEMOTACTIC PROTEIN-1, MIGRATION, LARGE GRANULAR LYMPHOCYTES, CYTOKINE, FAMILY, INVOLVEMENT, FIBRONECTIN, LOCOMOTION, ADHESION, BIOLOGY, INVITRO, BINDING, Binding, Competitive, Chemokine CCL2, Chemokine CCL7, Chemokine CCL8, Chemotactic Factors, Chemotaxis, Leukocyte, Cytokines, Humans, In Vitro Techniques, Killer Cells, Natural, Lymphocyte Activation, Monocyte Chemoattractant Proteins, Receptors, Cell Surface, 1107 Immunology, 3204 Immunology

Abstract:

Under certain physiological and pathological conditions, naturall killer (NK) cells rapidly accumulate in tissues. Chemokines are an essential component of the current paradigm of leukocyte recruitment. The present study was designed to investigate the responsiveness of NK cells to the prototypic C-C chemokine, monocyte chemotactic protein-1 (MCP-1). MCP-1 induced migration across filters of interleukin (IL)-2-activated NK cells, whereas it was a weak attractant for unstimulated cells. Maximal induction of migration required a positive concentration gradient between the lower and the upper compartment of the chemotaxis chamber. Preliminary characterization of the MCP-1 receptor on NK cells indicated that the chemotactic response to MCP-1 was blocked by pre-treatment of cells with Bordetella pertussis toxin, and MCP-1 but not IL-8 displaced I-125-labeled MCP-1 from IL-2-activated NK cells.