title: Primary human lymphocytes transduced with NY-ESO-1 antigen-specific TCR genes recognize and kill diverse human tumor cell lines.
abstract: cDNAs encoding TCR alpha- and beta-chains specific for HLA-A2-restricted cancer-testis Ag NY-ESO-1 were cloned using a 5'RACE method from RNA isolated from a CTL generated by in vitro stimulation of PBMC with modified NY-ESO-1-specific peptide (p157-165, 9V). Functionality of the cloned TCR was confirmed by RNA electroporation of primary PBL. cDNA for these alpha- and beta-chains were used to construct a murine stem cell virus-based retroviral vector, and high titer packaging cell lines were generated. Gene transfer efficiency in primary T lymphocytes of up to 60% was obtained without selection using a method of precoating retroviral vectors onto culture plates. Both CD4(+) and CD8(+) T cells could be transduced at the same efficiency. High avidity Ag recognition was demonstrated by coculture of transduced lymphocytes with target cells pulsed with low levels of peptide (<20 pM). TCR-transduced CD4 T cells, when cocultured with NY-ESO-1 peptide pulsed T2 cells, could produce IFN-gamma, GM-CSF, IL-4, and IL-10, suggesting CD8-independent, HLA-A2-restricted TCR activation. The transduced lymphocytes could efficiently recognize and kill HLA-A2- and NY-ESO-1-positive melanoma cell lines in a 4-h (51)Cr release assay. Finally, transduced T cells could efficiently recognize NY-ESO-1-positive nonmelanoma tumor cell lines. These results strongly support the idea that redirection of normal T cell specificity by TCR gene transfer can have potential applications in tumor adoptive immunotherapy.
authors.affiliation: Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
authors.forename: Yangbing
authors.initials: Y
authors.lastname: Zhao
authors.forename: Zhili
authors.initials: Z
authors.lastname: Zheng
authors.forename: Paul F
authors.initials: PF
authors.lastname: Robbins
authors.forename: Hung T
authors.initials: HT
authors.lastname: Khong
authors.forename: Steven A
authors.initials: SA
authors.lastname: Rosenberg
authors.forename: Richard A
authors.initials: RA
authors.lastname: Morgan
mesh_terms: D019264:Adoptive Transfer / Q000379:methods*; D000951:Antigens, Neoplasm / Q000276:immunology*; D045744:Cell Line, Tumor; D002478:Cells, Cultured; D003001:Cloning, Molecular; D018920:Coculture Techniques; D016207:Cytokines / Q000096:biosynthesis; D003602:Cytotoxicity, Immunologic; D019672:Genes, T-Cell Receptor; D005822:Genetic Vectors; D015789:HLA-A2 Antigen; D006801:Humans; D008213:Lymphocyte Activation; D008565:Membrane Proteins / Q000276:immunology*; D010446:Peptide Fragments / Q000276:immunology; D037182:T-Cell Antigen Receptor Specificity; D013601:T-Lymphocytes / Q000276:immunology* / Q000378:metabolism / Q000637:transplantation; D014161:Transduction, Genetic / Q000379:methods*
chemical_list: D000951:Antigens, Neoplasm; C104948:CTAG1B protein, human; D016207:Cytokines; D015789:HLA-A2 Antigen; D008565:Membrane Proteins; D010446:Peptide Fragments