title: Monoclonal antibody 2B6-F2 identifies a subset of murine natural killer cells with receptors for YAC-1 and WEHI-164 targets.
abstract: This study reports the generation of rat MoAb 2B6-F2 (IgG2a) that identifies a subpopulation of murine NK cells in the spleen, bone marrow, peripheral blood, lung, and peritoneal leukocytes. By flow cytometry, 2B6-F2 reacted with 10% of naive CBA (immunizing strain) spleen leukocytes of which 3% exhibited small lymphocyte morphology while 7% were large granular leukocytes. This pattern of binding was similarly obtained for BALB/c, C57BL/6, CE, and DBA/2 mice. 2B6-F2 and complement reduced splenic NK activity 40-57% in CBA, C57BL/6, BALB/c, CE, and DBA/2 strains. In CBA, C57BL/6, and CE mice < or = 15% reduction in splenic NC activity was observed while DBA/2 and BALB/c mice displayed 55-73% reduction. Cellular competitive inhibition studies showed that 2B6-F2+ NK cells in BALB/c and DBA/2 mice bind and kill YAC-1 and WEHI-164 target cells via a receptor that recognizes a shared determinant on these targets. Western blot and radioimmunoprecipitation studies indicated that 2B6-F2 identifies a 14-kDa monomeric cell surface molecule.
authors.affiliation: Discipline of Surgical Science, Faculty of Medicine, University of Newcastle, N.S.W., Australia.
authors.forename: R
authors.initials: R
authors.lastname: Martiniello
authors.forename: Y C
authors.initials: YC
authors.lastname: Smart
authors.forename: R C
authors.initials: RC
authors.lastname: Burton
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology*; D000918:Antibody Specificity; D000954:Antigens, Surface / Q000276:immunology*; D003602:Cytotoxicity, Immunologic; D007111:Immunity, Cellular; D007694:Killer Cells, Natural / Q000276:immunology*; D016131:Lymphocyte Subsets / Q000276:immunology*; D008562:Membrane Glycoproteins / Q000276:immunology; D051379:Mice; D008815:Mice, Inbred Strains; D008970:Molecular Weight
chemical_list: D000911:Antibodies, Monoclonal; D000954:Antigens, Surface; D008562:Membrane Glycoproteins