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Virus-Like Particle Vaccine Induces Protective Immunity against Homologous and Heterologous Strains of Influenza Virus

Open access
Quan, Fu-Shi, Huang, Chunzi, Compans, Richard W., Kang, Sang-Moo·2007·Journal of Virology

Abstract

Recurrent outbreaks of highly pathogenic avian influenza virus pose the threat of pandemic spread of lethal disease and make it a priority to develop safe and effective vaccines. Influenza virus-like particles (VLPs) have been suggested to be a promising vaccine approach. However, VLP-induced immune responses, and their roles in inducing memory immune responses and cross-protective immunity have not been investigated. In this study, we developed VLPs containing influenza virus A/PR8/34 (H1N1) hemagglutinin (HA) and matrix (M1) proteins and investigated their immunogenicity, long-term cross-protective efficacy, and effects on lung proinflammatory cytokines in mice. Intranasal immunization with VLPs containing HA induced high serum and mucosal antibody titers and neutralizing activity against PR8 and A/WSN/33 (H1N1) viruses. Mice immunized with VLPs containing HA showed little or no proinflammatory lung cytokines and were protected from a lethal challenge with mouse-adapted PR8 or WSN viruses even 5 months postimmunization. Influenza VLPs induced mucosal immunoglobulin G and cellular immune responses, which were reactivated rapidly upon virus challenge. Long-lived antibody-secreting cells were detected in the bone marrow of immunized mice. Immune sera administered intranasally were able to confer 100% protection from a lethal challenge with PR8 or WSN, which provides further evidence that anti-HA antibodies are primarily responsible for preventing infection. Taken together, these results indicate that nonreplicating influenza VLPs represent a promising strategy for the development of a safe and effective vaccine to control the spread of lethal influenza viruses.

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Research works printed but not linked: 14

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Metadata

Authors
Quan, F.-S., Huang, C., Compans, R. W., & Kang, S.-M.
Venue
Journal of Virology
Published
2007-04
Volume
81
Issue
7
Pages
3514-3524
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2152912310
Cited by
313
References
29
FWCI
14.87
Type
journal article
Language
en
Open access
green
Licence
journals.asm.org/non-commercial-tdm-license (tdm)

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Quan, F.-S., Huang, C., Compans, R. W., & Kang, S.-M. (2007). Virus-Like Particle Vaccine Induces Protective Immunity against Homologous and Heterologous Strains of Influenza Virus. Journal of Virology. https://doi.org/10.1128/jvi.02052-06

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