home *** CD-ROM | disk | FTP | other *** search
- Document 1070
- DOCN M9621070
- TI Neutralization of primary HIV-1 isolates by anti-envelope monoclonal
- antibodies.
- DT 9602
- AU D'Souza MP; Milman G; Bradac JA; McPhee D; Hanson CV; Hendry RM;
- Division of AIDS, National Institute of Allergy and Infectious;
- Diseases, National Institutes of Health, Bethesda, Maryland; 20892, USA.
- SO AIDS. 1995 Aug;9(8):867-74. Unique Identifier : AIDSLINE MED/96014959
- AB OBJECTIVE: To evaluate human monoclonal antibodies (MAb) for
- neutralizing activity against primary HIV-1 isolates in peripheral blood
- mononuclear cells. DESIGN: Neutralization activity data were obtained
- from 11 laboratories on a coded panel consisting of six human MAb to HIV
- envelope V3, CD4-binding region or gp41. Hyperimmune globulin against
- HIV-1 and normal human immunoglobulin G were supplied as controls. Each
- laboratory received pre-titered virus for use in the studies. METHODS:
- Each laboratory measured neutralization of the MAb against laboratory
- strain HIVMN, genomic clone HIVJR-CSF, two subtype B and one subtype D
- primary isolates. RESULTS: The titers of the centrally supplied virus
- stocks as determined by re-titration or back-titration varied among
- laboratories and were generally 10-100-fold less than provided. The
- neutralizing activity of each MAb varied by as much as a 1000-fold among
- laboratories. These differences may result from varying sensitivity in
- neutralization assay protocols and the differing susceptibility of
- primary cells to infection with HIV-1. CONCLUSIONS: To consolidate the
- data from multiple laboratories, the neutralization titers were compared
- by classifying antibodies as neutralizing if the antibody concentration
- for 50% virus inhibition was < or = 10 micrograms/ml. By this criterion,
- the CD4-binding region and gp41 MAb neutralized all four subtype B
- viruses and the subtype D isolate in a few of the laboratories. The V3
- MAb neutralized only HIVMN and the closely related HIVJR-CSF viruses.
- DE *Antibodies, Monoclonal Antigens, CD4/IMMUNOLOGY Comparative Study
- Gene Products, env/*IMMUNOLOGY Human *HIV Antibodies HIV Envelope
- Protein gp120/IMMUNOLOGY HIV Envelope Protein gp41/IMMUNOLOGY
- HIV-1/CLASSIFICATION/*IMMUNOLOGY/ISOLATION & PURIF In Vitro
- Leukocytes, Mononuclear/VIROLOGY Neutralization Tests Peptide
- Fragments/IMMUNOLOGY Support, Non-U.S. Gov't Support, U.S. Gov't,
- P.H.S. JOURNAL ARTICLE
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
-
-