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M94A0165.TXT
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1994-10-01
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Document 0165
DOCN M94A0165
TI Epitope mapping and topology of baculovirus-expressed HIV-1 gp160
determined with a panel of murine monoclonal antibodies.
DT 9412
AU Abacioglu YH; Fouts TR; Laman JD; Claassen E; Pincus SH; Moore JP; Roby
CA; Kamin-Lewis R; Lewis GK; Department of Microbiology and Immunology,
University of Maryland; School of Medicine, Baltimore 21201.
SO AIDS Res Hum Retroviruses. 1994 Apr;10(4):371-81. Unique Identifier :
AIDSLINE MED/94347461
AB To define protein folding patterns of HIV-1 Env subunit vaccines, we
have isolated a set of 30 monoclonal antibodies (MAbs) from BALB/c mice
immunized with a recombinant gp160 vaccine (rgp160) expressed in a
baculovirus system. This article describes epitope mapping for the MAb
panel and topology of the epitopes for rgp160 and a recombinant gp120
(rgp120) also expressed in a baculovirus system. The following results
are reported: (1) rgp160 harbors a minimum of 4 antigenic domains, 3
mapping to the C1, C2, and C3/V4 regions of gp120 and 1 mapping to the
cytoplasmic tail of gp41; (2) there are at least 3 adjacent or
overlapping epitopes in each antigenic domain; (3) a minimum of 14
independent epitopes were mapped, all of which are continuous sites; (4)
each of the epitopes is exposed on rgp160 without prior manipulation of
the protein; and (5) by contrast, 6 of the 8 epitopes mapping to the C1,
C2, and C3/V4 regions are not exposed on rgp120, but become exposed when
the protein is denatured. Taken together, these results show that rgp160
and rgp120 are folded differently, illustrating the use of this MAb
panel to compare epitope topographies of recombination HIV-1 Env
proteins. This MAb panel may aid in the refinement of HIV-1 Env subunit
vaccines.
DE Amino Acid Sequence Animal Antibodies, Monoclonal AIDS
Vaccines/CHEMISTRY/IMMUNOLOGY Baculoviridae/GENETICS Enzyme-Linked
Immunosorbent Assay Female Gene Products,
env/CHEMISTRY/*GENETICS/*IMMUNOLOGY HIV Antigens/CHEMISTRY/*GENETICS
HIV Envelope Protein gp120/CHEMISTRY/GENETICS/IMMUNOLOGY
HIV-1/*GENETICS/*IMMUNOLOGY Immunization Mice Mice, Inbred BALB C
Molecular Sequence Data Peptide Mapping Protein Folding Protein
Precursors/CHEMISTRY/*GENETICS/*IMMUNOLOGY Sequence Deletion 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).