title: Reconstitution of CD8+ T cells by retroviral transfer of the TCR alpha beta-chain genes isolated from a clonally expanded P815-infiltrating lymphocyte.
abstract: Gene transfer of TCR alphabeta-chains into T cells may be a promising strategy for providing valuable T lymphocytes in the treatment of tumors and other immune-mediated disorders. We report in this study the reconstitution of CD8(+) T cells by transfer of TCR alphabeta-chain genes derived from an infiltrating T cell into P815. Analysis of the clonal expansion and Vbeta subfamily usage of CD8(+) TIL in the tumor sites demonstrated that T cells using Vbeta10 efficiently infiltrated and expanded clonally. The TCR alpha- and beta-chain sequences derived from a tumor-infiltrating CD8(+)/Vbeta10(+) single T cell clone (P09-2C clone) were simultaneously determined by the RT-PCR/single-strand conformational polymorphism method and the single-cell PCR method. When P09-2C TCR alphabeta-chain genes were retrovirally introduced into CD8(+) T cells, the reconstituted T cells positively lysed the P815 tumor cells, but not the A20, EL4, or YAC-1 cells, in vitro. In addition, the CTL activity was blocked by the anti-H2L(d) mAb. Furthermore, T cells containing both TCR alpha- and beta-chains, but not TCR beta-chain alone, accumulated at the tumor-inoculated site when the reconstituted CD8(+) T cells were adoptively transferred to tumor-bearing nude mice. These findings suggest that it is possible to reconstitute functional tumor-specific CD8(+) T cells by transfer of TCR alphabeta-chain genes derived from TIL, and that such T cells might be useful as cytotoxic effector cells or as a vehicle for delivering therapeutic agents.
authors.affiliation: Department of Allergy and Rheumatology, Graduate School of Medicine, and Division of Cellular Therapy, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tahara
authors.forename: Keishi
authors.initials: K
authors.lastname: Fujio
authors.forename: Yasuto
authors.initials: Y
authors.lastname: Araki
authors.forename: Keigo
authors.initials: K
authors.lastname: Setoguchi
authors.forename: Yoshikata
authors.initials: Y
authors.lastname: Misaki
authors.forename: Toshio
authors.initials: T
authors.lastname: Kitamura
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Yamamoto
mesh_terms: D019264:Adoptive Transfer / Q000379:methods; D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology* / Q000378:metabolism / Q000821:virology; D002465:Cell Movement / Q000235:genetics / Q000276:immunology; D002999:Clone Cells; D003602:Cytotoxicity, Immunologic / Q000235:genetics; D005260:Female; D018014:Gene Transfer Techniques; D016246:Lymphocytes, Tumor-Infiltrating / Q000276:immunology* / Q000378:metabolism / Q000473:pathology / Q000637:transplantation*; D034801:Mastocytoma / Q000235:genetics / Q000276:immunology* / Q000473:pathology / Q000628:therapy*; D051379:Mice; D008807:Mice, Inbred BALB C; D008811:Mice, Inbred DBA; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D018807:Polymorphism, Single-Stranded Conformational; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000235:genetics* / Q000302:isolation & purification / Q000627:therapeutic use; D012190:Retroviridae / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014407:Tumor Cells, Cultured
chemical_list: D016693:Receptors, Antigen, T-Cell, alpha-beta