title: [Effects of humoral factors of the mastocytoma P815 cells on the formation of allospecific killers in mixed culture of lymphocytes and their cytotoxic activity].
abstract: The influence of the P-815 mastocytoma cells and their humoral factors, contained in culture supernatant and ascitic fluids on the generation of allospecific cytotoxic T-cells (alloCTL) in mixed culture of lymphocytes was studied. Both tumor cells and humoral factors were shown to inhibit generation of allospecific killers. Normal spleen cells and peptonic ascites of DBA/2 mice did not indicate immunosuppressive activity. Immunosuppressive factors did not affect CTL effector function (lysis of target cells). Both tumor cells and immunosuppressive factors did not exert toxic effect on mouse splenocyte. The suppressive effect of tumor cells and humoral factors was not associated with their cytotoxic action on lymphocytes.
authors.forename: A E
authors.initials: AE
authors.lastname: Medvedev
authors.forename: U
authors.initials: U
authors.lastname: Dostman
authors.forename: A
authors.initials: A
authors.lastname: Flegel'
mesh_terms: D000818:Animals; D001202:Ascitic Fluid / Q000276:immunology; D007694:Killer Cells, Natural / Q000276:immunology*; D007959:Lymphocyte Culture Test, Mixed; D008297:Male; D012515:Mast-Cell Sarcoma / Q000276:immunology*; D051379:Mice; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D012513:Sarcoma, Experimental / Q000276:immunology*; D013154:Spleen / Q000276:immunology; D013491:Suppressor Factors, Immunologic / Q000032:analysis*; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*; D014407:Tumor Cells, Cultured
chemical_list: D013491:Suppressor Factors, Immunologic
vernacular_title: Izuchenie deĭstviia gumoral'nykh faktorov kletok mastotsitomy P815 na obrazovanie allospetsificheskikh killerov v smeshannoĭ kul'ture limfotsitov i ikh tsitotoksicheskuiu aktivnost'.