title: Granulocyte-macrophage colony-stimulating factor-based melanoma cell vaccines immunize syngeneic and allogeneic recipients via host dendritic cells.
abstract: Subcutaneous injection of GM-CSF-expressing cancer cells into experimental animals results in protective cancer immunity. To delineate the mode of action of such vaccines, we used trinitrophenyl, the antigenic moiety of the contact allergen trinitrochlorobenzene, as surrogate Ag. Trinitrophenyl-derivatized bone marrow-derived dendritic cells were found to elicit a contact hypersensitivity response in syngeneic, but not in allogeneic recipients, compatible with their expected mode of direct Ag presentation. When expressing GM-CSF, haptenized M3 melanoma cells were also able to induce a contact hypersensitivity response but, in contrast to bone marrow-derived dendritic cells, not only in syngeneic but also in allogeneic recipients. This argues for a critical role of host APC. To identify their nature, we introduced the beta-galactosidase (betagal) gene into M3-GM cells. Their administration activated betagal-specific, L(d)-restricted CTL in syngeneic BALB/c mice. Evaluation of lymph nodes draining M3-GM-betagal injection sites revealed the presence of cells presenting the respective L(d)-binding betagal peptide epitope. Based on their capacity to activate betagal-specific CTL, they were identified as being CD11c(+) dendritic cells. These experiments provide a rational basis for the use of GM-CSF-based melanoma cell vaccines in an allogeneic setting.
authors: Department of Dermatology, Division of Immunology, Allergy and Infectious Diseases, University of Vienna Medical School, Vienna, Austria. Achim.Schneeberger@akhwien.ac.at
authors: Achim
authors: A
authors: Schneeberger
authors: Petra
authors: P
authors: Lührs
authors: Raphaela
authors: R
authors: Kutil
authors: Peter
authors: P
authors: Steinlein
authors: Hansjörg
authors: H
authors: Schild
authors: Walter
authors: W
authors: Schmidt
authors: Georg
authors: G
authors: Stingl
mesh_terms: D000279:Administration, Cutaneous; D000818:Animals; D017951:Antigen Presentation / Q000235:genetics; D016026:Bone Marrow Transplantation / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D019496:Cancer Vaccines / Q000008:administration & dosage / Q000235:genetics / Q000276:immunology*; D045744:Cell Line, Tumor; D003602:Cytotoxicity, Immunologic / Q000235:genetics; D003713:Dendritic Cells / Q000276:immunology* / Q000637:transplantation; D003877:Dermatitis, Contact / Q000276:immunology; D018984:Epitopes, T-Lymphocyte / Q000008:administration & dosage / Q000235:genetics / Q000276:immunology; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000008:administration & dosage / Q000235:genetics / Q000276:immunology*; D015395:Histocompatibility Antigens Class I / Q000235:genetics / Q000276:immunology; D007279:Injections, Subcutaneous; D007801:Langerhans Cells / Q000276:immunology / Q000637:transplantation; D008213:Lymphocyte Activation / Q000235:genetics; D008545:Melanoma / Q000276:immunology* / Q000517:prevention & control; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D009368:Neoplasm Transplantation / Q000276:immunology; D010853:Picryl Chloride / Q000008:administration & dosage / Q000276:immunology; D014162:Transfection; D014184:Transplantation, Homologous / Q000276:immunology*; D014185:Transplantation, Isogeneic / Q000276:immunology*; D014301:Trinitrobenzenes / Q000008:administration & dosage / Q000276:immunology; D001616:beta-Galactosidase / Q000096:biosynthesis / Q000235:genetics / Q000276:immunology
chemical_list: D019496:Cancer Vaccines; D018984:Epitopes, T-Lymphocyte; D015395:Histocompatibility Antigens Class I; D014301:Trinitrobenzenes; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D001616:beta-Galactosidase; D010853:Picryl Chloride