title: Tumor cell vaccine elicits potent antitumor immunity after allogeneic T-cell-depleted bone marrow transplantation.
abstract: Allogeneic bone marrow transplantation (BMT) is currently restricted to hematological malignancies because of a lack of antitumor activity against solid cancers. We have tested a novel treatment strategy to stimulate specific antitumor activity against a solid tumor after BMT by vaccination with irradiated tumor cells engineered to secrete granulocyte-macrophage colony-stimulating factor (GM-CSF). Using the B16 melanoma model, we found that vaccination elicited potent antitumor activity in recipients of syngeneic BMT in a time-dependent fashion, and that immune reconstitution was critical for the development of antitumor activity. Vaccination did not stimulate antitumor immunity after allogeneic BMT because of the post-BMT immunodeficiency associated with graft-versus-host disease (GVHD). Remarkably, vaccination was effective in stimulating potent and long-lasting antitumor activity in recipients of T-cell-depleted (TCD) allogeneic bone marrow. Recipients of TCD bone marrow who showed significant immune reconstitution by 6 weeks after BMT developed B16-specific T-cell-cytotoxic, proliferative, and cytokine responses as a function of vaccination. T cells derived from donor stem cells were, therefore, able to recognize tumor antigens, although they remained tolerant to host histocompatibility antigens. These results demonstrate that GM-CSF-based tumor cell vaccines after allogeneic TCD BMT can stimulate potent antitumor effects without the induction of GVHD, and this strategy has important implications for the treatment of patients with solid malignancies.
authors.affiliation: Department of Internal Medicine, University of Michigan Cancer Center, Ann Arbor, Michigan 48109-0942, USA.
authors.forename: T
authors.initials: T
authors.lastname: Teshima
authors.forename: N
authors.initials: N
authors.lastname: Mach
authors.forename: G R
authors.initials: GR
authors.lastname: Hill
authors.forename: L
authors.initials: L
authors.lastname: Pan
authors.forename: S
authors.initials: S
authors.lastname: Gillessen
authors.forename: G
authors.initials: G
authors.lastname: Dranoff
authors.forename: J L
authors.initials: JL
authors.lastname: Ferrara
mesh_terms: D000818:Animals; D016026:Bone Marrow Transplantation / Q000276:immunology*; D019496:Cancer Vaccines / Q000276:immunology*; D005260:Female; D006086:Graft vs Host Disease / Q000276:immunology; D020350:Graft vs Tumor Effect / Q000276:immunology*; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000008:administration & dosage / Q000276:immunology / Q000378:metabolism; D006649:Histocompatibility Antigens / Q000276:immunology; D007108:Immune Tolerance / Q000276:immunology; D008213:Lymphocyte Activation / Q000276:immunology; D008546:Melanoma, Experimental / Q000276:immunology* / Q000378:metabolism / Q000517:prevention & control / Q000628:therapy; D051379:Mice; D008810:Mice, Inbred C57BL; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D019496:Cancer Vaccines; D006649:Histocompatibility Antigens; D016178:Granulocyte-Macrophage Colony-Stimulating Factor