Summary
We constructed and expressed different overlapping fusion proteins with the nef gene of HIV-1 and generated specific polyclonal rabbit and monoclonal mouse antibodies against these recombinant proteins. The rabbit antisera, one of the monoclonal antibodies as well as a serum from a HIV-1 infected patient recognized the nef protein with Mr 27 kDa in latently HIV-1 infected glioma cells in the immunoblot. In contrast, these antibodies could not detect nef in productively HIV-1 infected Molt-3 cells neither in immunoblot nor in indirect immunofluorescence assays. These results indicate the possible participation of nef in viral latency.
The recombinant nef proteins were used as probes for anti-nef antibodies in human sera. We observed in 17 of 57 sera tested specific anti-nef antibodies. All of these anti-nef positive sera also contained antibodies directed against viral structural proteins. The NH2-terminal region of the recombinant nef was shown to be the major immunodominant antigenic site in the immunoblot assay.
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Kienzle, N., Bröker, M., Harthus, H.P. et al. Immunological study of the nef protein from HIV-1 by polyclonal and monoclonal antibodies. Archives of Virology 118, 29–41 (1991). https://doi.org/10.1007/BF01311301
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DOI: https://doi.org/10.1007/BF01311301