Characterization of a Bivalent Vaccine Capable of Inducing Protection Against Both Ebola and Cross-clade H5N1 Influenza in Mice

Gary Wong, Xiangguo Qiu, Hideki Ebihara, Heinz Feldmann, Gary P. Kobinger

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Background. Ebola virus (EBOV) is a lethal pathogen that causes up to 90% mortality in humans, whereas H5N1 avian influenza has a 60% fatality rate. Both viruses are considered pandemic threats. The objective was to evaluate the protective efficacy of a bivalent, recombinant vesicular stomatitis virus vaccine expressing both the A/Hanoi/30408/2005 H5N1 hemagglutinin and the EBOV glycoprotein (VSVΔG-HA-ZGP) in a lethal mouse model of infection. Methods. Mice were vaccinated 28 days before or 30 minutes after a lethal challenge with mouse-adapted EBOV or selected H5N1 influenza viruses from clades 0, 1, and 2. Animals were monitored for weight loss and survival, in addition to humoral and cell-mediated responses after immunization. Results. A single VSVΔG-HA-ZGP injection was efficacious when administered 28 days before a homologous H5N1 and/or mouse-adapted EBOV challenge, as well as a heterologous H5N1 challenge. Postexposure protection was only observed in vaccinated animals challenged with homologous H5N1 and/or mouse-adapted EBOV. Analysis of the adaptive immune response postvaccination revealed robust specific T- and B-cell responses, including a potent hemagglutinin inhibition antibody response against all H5N1 strains tested. Conclusions. The results highlight the ability of vesicular stomatitis virus-vectored vaccines to rapidly confer protection against 2 unrelated pathogens and stimulate cross-protection against H5N1 influenza viruses.

Original languageEnglish (US)
Pages (from-to)S435-S442
JournalJournal of Infectious Diseases
Volume212
DOIs
StatePublished - Oct 1 2015

Keywords

  • Ebola virus
  • H5N1 influenza virus
  • mice
  • vaccine
  • vesicular stomatitis virus

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

Fingerprint Dive into the research topics of 'Characterization of a Bivalent Vaccine Capable of Inducing Protection Against Both Ebola and Cross-clade H5N1 Influenza in Mice'. Together they form a unique fingerprint.

Cite this