title: Specificity for in vivo graft prolongation in gamma delta T cell receptor+ hybridomas derived from mice given portal vein donor-specific preimmunization and skin allografts.
abstract: gamma delta TCR+ hybridoma cells prepared from mesenteric lymph node cells of animals receiving donor-specific immunization via the portal vein can adoptively transfer this increased graft survival to naive animals. Analysis of TCR gamma-chain junctional sequence diversity suggested that some 40 to 50% of the hybridomas expressed gamma-chain junctional sequence diversity and were stimulated to produce cytokines both by heat shock proteins and by minor histocompatibility Ag-specific irradiated peritoneal cells. The remaining gamma delta TCR+ hybridoma cells expressed TCR with a common gamma-chain junctional sequence and were stimulated to cytokine production by MHC-matched, but minor histocompatibility Ag-mismatched (as well as matched), peritoneal cells, but not by heat shock proteins. We have compared the effectiveness of representative hybridomas expressing unique gamma-chain junctional sequences or common gamma-chain junctional sequences for prolongation of donor-specific or third-party (MHC-matched or MHC-mismatched) skin grafts. Our data show a good correlation between the specificity for stimulation for cytokine production in vitro and efficacy in graft prolongation assays in vivo. Hybridoma cells expressing unique gamma-chain junctional sequences that showed Ag-specific stimulation of cytokine production in vitro and skin graft survival in vivo augmented survival of third-party skin grafts if simultaneously transplanted with both Ag-specific and third-party skin grafts. Graft prolongation in vivo using cells from either population of gamma delta TCR+ hybridomas was decreased by infusion of anti-IL-10 mAb and abolished when both anti-IL-10 and anti-TGF-beta Abs were used together.
authors.affiliation: Toronto Hospital, Department of Surgery and Immunology, University of Toronto, Ontario, Canada.
authors.forename: R M
authors.initials: RM
authors.lastname: Gorczynski
authors.forename: Z
authors.initials: Z
authors.lastname: Chen
authors.forename: H
authors.initials: H
authors.lastname: Zeng
authors.forename: X M
authors.initials: XM
authors.lastname: Fu
mesh_terms: D019264:Adoptive Transfer / Q000379:methods; D000818:Animals; D001483:Base Sequence; D016207:Cytokines / Q000096:biosynthesis; D018984:Epitopes, T-Lymphocyte / Q000096:biosynthesis / Q000276:immunology*; D006082:Graft Enhancement, Immunologic / Q000379:methods; D006825:Hybridomas / Q000378:metabolism* / Q000637:transplantation; D007115:Immunization Schedule; D017710:Lymphocyte Transfusion; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D011169:Portal Vein; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000096:biosynthesis / Q000276:immunology*; D016038:Skin Transplantation / Q000379:methods; D014019:Tissue Donors
chemical_list: D016207:Cytokines; D018984:Epitopes, T-Lymphocyte; D016692:Receptors, Antigen, T-Cell, gamma-delta