Abstract:
:Because immunologic classification of human immunodeficiency virus type 1 (HIV) might be more relevant than genotypic classification for designing polyvalent vaccines, studies were undertaken to determine whether immunologically defined groups of HIV ("immunotypes") could be identified. For these experiments, the V3 region of the 120-kDa envelope glycoprotein (gp120) was chosen for study. Although antibodies (Abs) to V3 may not play a major protective role in preventing HIV infection, identification of a limited number of immunologically defined structures in this extremely variable region would set a precedent supporting the hypothesis that, despite its diversity, the HIV family, like the V3 region, might be divisible into immunotypes. Consequently, the immunochemical reactivities of 1,176 combinations of human anti-V3 monoclonal Abs (MAbs) and V3 peptides, derived from viruses of several clades, were studied. Extensive cross-clade reactivity was observed. The patterns of reactivities of 21 MAbs with 50 peptides from clades A through H were then analyzed by a multivariate statistical technique. To test the validity of the mathematical approach, a cluster analysis of the 21 MAbs was performed. Five groups were identified, and these MAb clusters corresponded to classifications of these same MAbs based on the epitopes which they recognize. The concordance between the MAb clusters identified by mathematical analysis and by their specificities supports the validity of the mathematical approach. Therefore, the same mathematical technique was used to identify clusters within the 50 peptides. Seven groups of peptides, each containing peptides from more than one clade, were defined. Inspection of the amino acid sequences of the peptides in each of the mathematically defined peptide clusters revealed unique "signature sequences" that suggest structural motifs characteristic of each V3-based immunotype. The results suggest that cluster analysis of immunologic data can define immunotypes of HIV. These immunotypes are distinct from genotypic classifications. The methods described pave the way for identification of immunotypes defined by immunochemical and neutralization data generated with anti-HIV Env MAbs and intact, viable HIV virions.
journal_name
J Viroljournal_title
Journal of virologyauthors
Zolla-Pazner S,Gorny MK,Nyambi PN,VanCott TC,Nádas Adoi
10.1128/JVI.73.5.4042-4051.1999subject
Has Abstractpub_date
1999-05-01 00:00:00pages
4042-51issue
5eissn
0022-538Xissn
1098-5514journal_volume
73pub_type
杂志文章abstract::We have mapped the temperature-sensitive (ts) lesions of three mutants, ts51, ts53, and ts65, and two other mutants, ts7 and ts20, to regions on the vaccinia virus genome that encode the 147- and 22-kilodalton subunits of the viral DNA-dependent RNA polymerase, respectively. Plasmid and bacteriophage clones from the H...
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pub_type: 杂志文章
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更新日期:1977-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2002-09-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.2.897-906.1999
更新日期:1999-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.9.2.263-272.1972
更新日期:1972-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.4.1859-1860.1990
更新日期:1990-04-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.25.1.395-407.1978
更新日期:1978-01-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.10.8098-8104.1998
更新日期:1998-10-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1989-11-01 00:00:00
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pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.4.1448-1451.1988
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.12.6268-6286.2002
更新日期:2002-06-01 00:00:00
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pub_type: 杂志文章
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