Identification of different target glycoproteins for bovine herpes virus type 1-specific cytotoxic T lymphocytes depending on the method of in vitro stimulation.
Vaccinia virus recombinants expressing the three major bovine herpes virus-1 (BHV-1) glycoproteins gI, gIII and gIV were used to identify the major target antigens for BHV-1-specific CTL isolated from immune cattle. Peripheral blood mononuclear cells (PBMC) expanded in vitro in the presence of interleukin-2 (IL-2) and lysed both gIII- and gIV-infected target cells. Secondary in vitro stimulation of PBMC was also performed in the presence of either fixed BHV-1-infected autologous fibroblasts or ultraviolet (UV)-inactivated virus. Both methods of antigen presentation allowed the proliferation of BHV-1-specific CTL but the target glycoprotein for these CTL differed depending on the method of stimulation. Vaccinia-gIV-infected targets were lysed predominantly when PBMC were stimulated by fixed infected fibroblasts, whilst PBMC stimulated by UV-inactivated virus lysed mostly vaccinia-gIII-infected targets. This observation could be explained by a different processing pathway of BHV-1 antigens in each cell type involved.
Department of Virology-Immunology, Faculty of Veterinary Medicine, University of Liège, Belgium.
M
M
Denis
M
M
Slaoui
G
G
Keil
L A
LA
Babiuk
E
E
Ernst
P P
PP
Pastoret
E
E
Thiry
D000818:Animals; D000956:Antigens, Viral / Q000276:immunology; D002417:Cattle; D002455:Cell Division / Q000276:immunology; D002478:Cells, Cultured; D003602:Cytotoxicity, Immunologic / Q000276:immunology; D007242:Herpesvirus 1, Bovine / Q000276:immunology*; D007241:Infectious Bovine Rhinotracheitis / Q000276:immunology*; D007700:Kinetics; D008213:Lymphocyte Activation / Q000276:immunology; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology*; D014764:Viral Proteins / Q000032:analysis / Q000276:immunology*
D000956:Antigens, Viral; D014764:Viral Proteins; C046998:bovine herpesvirus type-1 glycoproteins