| Literature DB >> 20580392 |
Jae-Min Song1, Jaber Hossain, Dae-Goon Yoo, Aleksandr S Lipatov, C Todd Davis, Fu-Shi Quan, Li-Mei Chen, Robert J Hogan, Ruben O Donis, Richard W Compans, Sang-Moo Kang.
Abstract
We generated influenza virus-like particles (VLPs) containing the wild type (WT) H5 hemagglutinin (HA) from A/Viet Nam/1203/04 virus or a mutant H5 HA with a deletion of the multibasic cleavage motif. VLPs containing mutant H5 HA were found to be as immunogenic as VLPs containing WT HA. A single intramuscular vaccination with either type of H5 VLPs provided complete protection against lethal challenge. In contrast, the recombinant H5 HA vaccine was less immunogenic and vaccination even with a 5 fold higher dose did not induce protective immunity. VLP vaccines were superior to the recombinant HA in inducing T helper type 1 immune responses, hemagglutination inhibition titers, and antibody secreting cells, which significantly contribute to inducing protective immunity after a single dose vaccination. This study provides insights into the potential mechanisms of improved immunogenicity by H5 VLP vaccines as an approach to improve the protective efficacy against potential pandemic viruses. Copyright 2010 Elsevier Inc. All rights reserved.Entities:
Mesh:
Substances:
Year: 2010 PMID: 20580392 PMCID: PMC2925114 DOI: 10.1016/j.virol.2010.05.034
Source DB: PubMed Journal: Virology ISSN: 0042-6822 Impact factor: 3.616