Identification of epitopes on the envelope (E) protein of dengue 2 and dengue 3 viruses using monoclonal antibodies

Identification of epitopes on the envelope (E) protein of dengue 2 and dengue 3 viruses using... Of a panel of forty-six anti-dengue 3 monoclonal antibodies (MAbs) only three neutralised infection of BHK cells by dengue 3 virus. Attempts to select neutralisation escape mutants (n.e.m.) with two of these antibodies failed. The n.e.m. population selected in the presence of the third neutralising antibody, 1H9, had a nucleotide change at position 1157 of the E protein gene resulting in a non-conservative amino acid change at E386 for a Lys to an Asn. A dengue 2 n.e.m. was selected with the flavivirus crossreactive IgG monoclonal antibody 4G2, had deduced amino acid changes at E169 (Ser to Pro) and E275 (Gly to Arg). This dengue 2 n.e.m. population produced smaller plaques in BHK cells than the parental virus, decreased fusion activity (FFWI) and had lost the ability to agglutinate gander erythrocyes at pH 6.0 to 6.7. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Identification of epitopes on the envelope (E) protein of dengue 2 and dengue 3 viruses using monoclonal antibodies

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Publisher
Springer Journals
Copyright
Copyright © 2001 by Springer-Verlag/Wien
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050170017
Publisher site
See Article on Publisher Site

Abstract

Of a panel of forty-six anti-dengue 3 monoclonal antibodies (MAbs) only three neutralised infection of BHK cells by dengue 3 virus. Attempts to select neutralisation escape mutants (n.e.m.) with two of these antibodies failed. The n.e.m. population selected in the presence of the third neutralising antibody, 1H9, had a nucleotide change at position 1157 of the E protein gene resulting in a non-conservative amino acid change at E386 for a Lys to an Asn. A dengue 2 n.e.m. was selected with the flavivirus crossreactive IgG monoclonal antibody 4G2, had deduced amino acid changes at E169 (Ser to Pro) and E275 (Gly to Arg). This dengue 2 n.e.m. population produced smaller plaques in BHK cells than the parental virus, decreased fusion activity (FFWI) and had lost the ability to agglutinate gander erythrocyes at pH 6.0 to 6.7.

Journal

Archives of VirologySpringer Journals

Published: Dec 1, 2001

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