title: Donor leukocyte infusion from immunized donors increases tumor vaccine efficacy after allogeneic bone marrow transplantation.
abstract: Donor T cells play a critical role in mediating both harmful graft-versus-host disease (GVHD) and beneficial graft-versus-tumor effect after allogeneic bone marrow transplantation (BMT). We have recently demonstrated a novel treatment strategy to stimulate specific antitumor activity with preservation of tolerance to host antigens after T cell-depleted allogeneic BMT by vaccination of recipients with irradiated B16 melanoma cells engineered to secrete granulocyte-macrophage colony-stimulating factor. In this murine system, donor leukocyte infusion from a donor immunized with the recipient-derived B16 vaccines enhanced clinical activity of tumor vaccines without exacerbating GVHD. CD4(+) T cells are essential for this enhancement. In vitro analysis of splenocytes from donor leukocyte infusion donor mice demonstrated that immunization of donors with the recipient-derived B16 vaccines elicited potent T-cell proliferation and cytokine responses specific to B16 antigens. These results demonstrate that immunization of donors with recipient-derived tumor vaccines preferentially induces tumor-specific T-cell responses and that vaccination of both donors and recipients can generate potent antitumor immunity without exacerbating GVHD. This strategy has important implications to prevent recurrence of malignancies after BMT.
authors.affiliation: Department of Internal Medicine, University of Michigan Cancer Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-0942, USA.
authors.forename: Takanori
authors.initials: T
authors.lastname: Teshima
authors.forename: Chen
authors.initials: C
authors.lastname: Liu
authors.forename: Kathleen P
authors.initials: KP
authors.lastname: Lowler
authors.forename: Glenn
authors.initials: G
authors.lastname: Dranoff
authors.forename: James L M
authors.initials: JL
authors.lastname: Ferrara
mesh_terms: D000818:Animals; D016026:Bone Marrow Transplantation / Q000276:immunology*; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D019496:Cancer Vaccines / Q000276:immunology*; D005260:Female; D006086:Graft vs Host Disease / Q000276:immunology; D016219:Immunotherapy, Adoptive / Q000379:methods*; D017708:Leukocyte Transfusion; D007962:Leukocytes / Q000276:immunology*; D008213:Lymphocyte Activation; D008546:Melanoma, Experimental / Q000276:immunology / Q000628:therapy; D051379:Mice; D008810:Mice, Inbred C57BL; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D019496:Cancer Vaccines