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- W1574205657 abstract "Abstract Two murine monoclonal antibodies, G3.519, recognizing the CD4-binding region, and BAT123, a variable region of gp120 of human immunodeficiency virus, were chemically coupled to pokeweed antiviral protein isolated from seeds (PAP-S). The immunoconjugates were purified by Sephacryl S-200 gel filtration and Mono S ion exchange chromatography. Immunoconjugate G3.519-PAP-S specifically killed human T cells, H9, infected with three diverse HIV-1 strains, HTLV-IIIB, -IIIMN, and -IIIRF. Inhibition of thymidine incorporation by the immunoconjugate was concentration-dependent, with the ID50 ranging from 1.4 x 10(-10) M to 1.7 x 10(-9) M. Immunoconjugate BAT123-PAP-S was effective in killing H9 cells infected with HTLV-IIIB (ID50 = 4.3 x 10(-11) M) and -IIIMN (ID50 = 4.7 x 10(-10) M), but not -IIIRF. Both immunoconjugates did not inhibit thymidine incorporation in uninfected H9 cells up to a concentration of 5.3 x 10(-8) M, and their cytotoxic activities could be competitively blocked by the respective unconjugated antibodies. The immunoconjugates retained the ability to neutralize HIV virions to infect T cells and to prevent the syncytium formation. These in vitro studies suggest that the use of immunoconjugates capable of killing HIV-infected T cells and neutralizing virus may provide an alternative treatment for HIV-infected persons." @default.
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- W1574205657 date "1990-02-15" @default.
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- W1574205657 title "Immunoconjugates that neutralize HIV virions kill T cells infected with diverse strains of HIV-1." @default.
- W1574205657 doi "https://doi.org/10.4049/jimmunol.144.4.1257" @default.
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