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- W2036615632 abstract "To generate T cell-specific retroviral vectors an scFv phage display library derived from immunized mice was selected for binding to the human T cell line Molt-4/8. The scFv cDNAs recovered from the selected phages were transiently expressed as an N-terminal fusion of the spleen necrosis virus (SNV) transmembrane protein (TM) subunit of the viral envelope protein (Env) in the cell line DSH-cxl, which packages the beta-galactosidase gene into SNV particles. Screening of supernatants from about 150 transfections resulted in the identification of 5 scFvs that mediated efficient transduction of Molt-4/8 cells. Using stable packaging cell lines vector preparations with titers greater than 104 EFU/ml on human T cells were obtained. The scFv 7A5 in particular was able to mediate selective transduction of human T cells with high efficiency. Titers of up to 106 EFU/ml were reached on Molt-4/8, Jurkat, and A301 cells, while titers on HeLa cells, TE671 cells, 293T cells, and HT1080 cells were below 102 EFU/ml. Transduction of stimulated primary human peripheral blood cells, which consisted mainly of T cells, was about fivefold more efficient than transduction of B cells. Western blot analysis of supernatant from the 7A5 packaging cells demonstrated incorporation of 7A5-TM into vector particles and indicated proteolytic processing of the coexpressed unmodified TM during particle formation. Binding of bacterially expressed 7A5-scFv to a panel of cell lines correlated well with the transduction results. These data provide the first proof of concept that a general approach can be taken to obtain scFvs able to mediate selective gene transfer into target cells." @default.
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- W2036615632 date "2000-01-20" @default.
- W2036615632 modified "2023-10-17" @default.
- W2036615632 title "Targeting Human T Cells by Retroviral Vectors Displaying Antibody Domains Selected from a Phage Display Library" @default.
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- W2036615632 doi "https://doi.org/10.1089/10430340050016030" @default.
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