A human anti-HIV autoantibody enhances EBV transformation and HIV infection
Copyright 1999 Academic Press.
| Veröffentlicht in: | Clinical immunology (Orlando, Fla.). - 1999. - 93(1999), 3 vom: 15. Dez., Seite 263-73 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1999
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| Zugriff auf das übergeordnete Werk: | Clinical immunology (Orlando, Fla.) |
| Schlagworte: | Journal Article Research Support, U.S. Gov't, P.H.S. Antibodies, Blocking Antibodies, Monoclonal Autoantibodies HIV Antibodies |
| Zusammenfassung: | Copyright 1999 Academic Press. A highly specific, human IgG mAb, F223, which reacts with both HIV-1-infected cells and uninfected lymphoid cells, has been derived. F223 reacts with gp120 but fails to neutralize viral infection. The antibody does enhance HIV-1 infection in a complement-dependent manner. The autoantigen recognized by F223 is expressed on a small percentage of T cells and NK cells and the majority of B cells. Immunoprecipitation demonstrates F223 reactivity with an as of yet unidentified 159-kDa protein in uninfected lymphoid cells. This reactivity with uninfected cells is inhibited by free gp120 demonstrating the cross-reactive nature of this antibody. The F223 light chain demonstrates strong homology to VLlambda2 family genes whereas the heavy chain is most homologous (84%) to the germline gene VH3-H.11. In vivo usage of VH3 family genes by F223 and an anti-HIV-1 (gp41) human mAb, 3D6, with related autoreactivity, suggests that VH3 sequences may be important components of potentially pathogenic human anti-HIV-1 envelope autoantibodies. F223 was isolated from an HIV-1 infected individual with lymphoma and in vitro F223 significantly enhances EBV transformation of normal B cells and increases immunoglobulin production without affecting B cell proliferation. Characterization of this antibody response may provide important insights and mechanistic information on HIV pathogenesis |
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| Beschreibung: | Date Completed 04.01.2000 Date Revised 14.11.2007 published: Print GENBANK: AF175559, AF175560 Citation Status MEDLINE |
| ISSN: | 1521-7035 |