home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9408a.zip
/
M9480213.TXT
< prev
next >
Wrap
Text File
|
1994-08-09
|
3KB
|
45 lines
Document 0213
DOCN M9480213
TI Multiepitope polypeptide of the HIV-1 envelope induces neutralizing
monoclonal antibodies against V3 loop.
DT 9410
AU Duarte CA; Montero M; Seralena A; Valdes R; Jimenez V; Benitez J;
Narciandi E; Madrazo J; Padron G; Sanchez G; et al; Center for Genetic
Engineering and Biotechnology, Havana, Cuba.
SO AIDS Res Hum Retroviruses. 1994 Mar;10(3):235-43. Unique Identifier :
AIDSLINE MED/94289061
AB A gene encoding a multiepitope polypeptide (MEP) has been synthesized.
It contains the information for (1) an 11-amino acid (aa) epitope from
the C1 region of gp120 of HIV-1 and (2) 3 epitopes of 15 amino acids
each, from the central part of the V3 loop of isolates MN, SC, and
WMJII. These four segments are linked by the short spacer peptide AGGGA.
This gene was cloned in a plasmid vector and expressed in Escherichia
coli as a fusion product with a 62-aa fragment of human IL-2. The
recombinant protein TAB1 was purified by washed pellet procedures and
reversed-phase HPLC. TAB1 was recognized in ELISAs by 25 of 27 sera from
seropositive individuals. Mice were immunized and several hybridomas
were obtained. Two of them secrete monoclonal antibodies that react with
synthetic peptides from isolates MN, WMJI, WMJIII, and SC with an
affinity constant in the range of 10(8) M-1. They also recognized
peptides from isolates SF2 and WMJII, but at much lower affinity. The
results obtained from peptide ELISAs indicate that the putative epitope
recognized by these MAbs lies within the sequence IHIGPGRAFYT. Classic
neutralization assays demonstrated that MAb 2C4 neutralizes 50% of the
MN isolate at 0.6 micrograms/ml but fails to neutralize IIIB and SF2
strains. The presence of antibodies directed against every one of the
component peptides in the sera of rabbits immunized with TAB1 was also
documented.
DE Amino Acid Sequence Animal Antibodies,
Monoclonal/BIOSYNTHESIS/*IMMUNOLOGY Antigenic
Determinants/GENETICS/*IMMUNOLOGY Cell Line Cloning, Molecular Genes,
Synthetic Human HIV Antibodies/BIOSYNTHESIS/*IMMUNOLOGY HIV Envelope
Protein gp120/GENETICS/*IMMUNOLOGY HIV-1/GENETICS/*IMMUNOLOGY Mice
Mice, Inbred BALB C Molecular Sequence Data Neutralization Tests
Peptide Fragments/GENETICS/*IMMUNOLOGY Peptides/BIOSYNTHESIS/IMMUNOLOGY
Rabbits Recombinant Fusion Proteins/BIOSYNTHESIS/GENETICS/IMMUNOLOGY
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).