Improved haemagglutinin antigen content in H5N1 candidate vaccine viruses with chimeric haemagglutinin molecules.

Abstract:

:The candidate vaccine virus NIBRG-14 was derived by reverse genetics and comprises the haemagglutinin (HA) and neuraminidase (NA) genes derived from the clade 1 virus A/Viet Nam/1194/2004 on an A/Puerto Rico/8/34 (PR8) backbone. The HA gene was modified to remove the multibasic cleavage site motif associated with high pathogenicity. Reports from manufacturers, confirmed by data generated in this laboratory, have shown that this virus yields a low amount of HA antigen. We have generated a panel of new viruses using reverse genetics in which each virus consists of the PR8 backbone, the NA gene from A/Viet Nam/1194/2004 and a chimeric HA gene with sequences from both PR8 and A/Viet Nam/1194/2004. Here we show that a number of these viruses have improved HA antigen content and yield and are therefore better candidate vaccine viruses for use in production of H5N1 vaccine.

journal_name

Vaccine

journal_title

Vaccine

authors

Harvey R,Nicolson C,Johnson RE,Guilfoyle KA,Major DL,Robertson JS,Engelhardt OG

doi

10.1016/j.vaccine.2010.09.006

subject

Has Abstract

pub_date

2010-11-23 00:00:00

pages

8008-14

issue

50

eissn

0264-410X

issn

1873-2518

pii

S0264-410X(10)01314-9

journal_volume

28

pub_type

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