title: Inverse relationship in H-2-associated lysis between NK cells and rIL-2-activated killer cells: evidence from in vitro killing and metastatic experiments.
abstract: We investigated the manner in which rIL-2 induced effectors in vitro (LAK cells), which, like NK cells, lyse targets nonspecifically and discriminate nonself, and how H-2 as the self-marker affects the LAK cell killing mechanism. NK cells showed an appreciably higher killing activity to B16 melanoma H-2- cells than to H-2+ cells. In contrast, LAK cells lysed more efficiently to H-2+ cells. The in vivo experiments showed that the NK cells prevented pulmonary metastasis of B16 H-2- cells in the normal syngeneic host, whereas the transferred LAK cells had a preferential inhibitory effect on the pulmonary metastasis of B16 H-2+ cells in the immunodeficient syngeneic hosts. Taken together, these results show that the H-2-encoded or H-2-associated molecules contribute to the triggering signal in the lysis by LAK cells, whereas the NK cells recognize the reduced self H-2 expression on the targets, thereby contributing to a trigger of the lysis.
mesh_terms: D000818:Animals; D003602:Cytotoxicity, Immunologic; D005677:G(M1) Ganglioside; D006028:Glycosphingolipids / Q000494:pharmacology; D006183:H-2 Antigens / Q000276:immunology*; D007116:Immunization, Passive; D007376:Interleukin-2 / Q000494:pharmacology*; D007694:Killer Cells, Natural / Q000187:drug effects / Q000276:immunology* / Q000637:transplantation; D008546:Melanoma, Experimental / Q000276:immunology / Q000556:secondary; D051379:Mice; D008805:Mice, Inbred A; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D011994:Recombinant Proteins / Q000494:pharmacology
chemical_list: D006028:Glycosphingolipids; D006183:H-2 Antigens; D007376:Interleukin-2; D011994:Recombinant Proteins; D005677:G(M1) Ganglioside; C018835:asialo GM1 ganglioside