title: Interleukin 2 induced non MHC-restricted killing of herpes simplex type-1 (HSV-1) infected allogeneic and autologous lymphoblasts.
abstract: Peripheral blood lymphocytes (PBL) from herpes simplex type-1 (HSV-1) seropositive (sero+) and seronegative (sero-) individuals were assessed before and after in vitro culture with IL-2 for their ability to kill different tumor cells and to kill HSV-1 infected PHA lymphoblasts using a 4 hr 51Cr release assay. Fresh PBL from either sero+ or sero- individuals had little cytotoxic activity against HSV-1 infected autologous PHA lymphoblasts or against different NK-insensitive tumor targets. When PBL from either sero+ or sero- individuals were incubated 3-4 days in vitro with IL-2, significant levels of cytotoxic activity was observed against both allogeneic and autologous HSV-1 infected targets and against different NK-insensitive tumor cells. When comparing PBL from sero+ versus sero- individuals for IL-2 induced cytotoxic activity against HSV-1 infected autologous targets, PBL from sero+ individuals always had significantly higher levels of cytotoxic activity. Allogeneic HSV-1 infected targets were also killed by IL-2 activated PBL obtained from either sero+ or sero- individuals, but IL-2 activated PBL from sero+ individuals showed higher cytotoxic activity on HSV-1 infected autologous targets when compared to HSV-1 infected allogeneic targets. When IL-2 induced cytotoxic effector cells were treated with HSV-1 for 1 hr and recultured with IL-2, significant inhibition of cytotoxic activity against all target cells was observed. Greater than 50% inhibition of cytotoxic activity was observed when IL-2 induced cytotoxic effector cells were treated with HSV-1 and cultured for 6 hr.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Microbiology, University of Texas Medical Branch, Galveston 77550.
authors.forename: G R
authors.initials: GR
authors.lastname: Klimpel
authors.forename: M
authors.initials: M
authors.lastname: Asuncion
authors.forename: M
authors.initials: M
authors.lastname: Fons
authors.forename: J D
authors.initials: JD
authors.lastname: Norton
authors.forename: T
authors.initials: T
authors.lastname: Albrecht
authors.forename: K D
authors.initials: KD
authors.lastname: Klimpel
authors.forename: M D
authors.initials: MD
authors.lastname: Stein
mesh_terms: D000818:Animals; D000920:Antibody-Dependent Cell Cytotoxicity; D001324:Autoantigens; D003602:Cytotoxicity, Immunologic; D006561:Herpes Simplex / Q000276:immunology / Q000382:microbiology; D006801:Humans; D066298:In Vitro Techniques; D007376:Interleukin-2 / Q000494:pharmacology*; D007519:Isoantigens; D007694:Killer Cells, Natural / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology* / Q000382:microbiology; D018139:Simplexvirus / Q000276:immunology*; D014407:Tumor Cells, Cultured / Q000276:immunology
chemical_list: D001324:Autoantigens; D007376:Interleukin-2; D007519:Isoantigens