Delivery of woodchuck hepatitis virus-like particle presented influenza M2e by recombinant attenuated Salmonella displaying a delayed lysis phenotype

Keith Ameiss, Shamaila Ashraf, Wei Kong, Andrew Pekosz, Wai Hong Wu, David Milich, Jean Noel Billaud, Roy Curtiss

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The use of live recombinant attenuated Salmonella vaccines (RASV) is a promising approach for controlling infections by multiple pathogens. The highly conserved extracellular domain of the influenza M2 protein (M2e) has been shown to provide broad spectrum protection against multiple influenza subtypes sharing similar M2e sequences. An M2e epitope common to a number of avian influenza subtypes was inserted into the core antigen of woodchuck hepatitis virus and expressed in two different recombinant attenuated Salmonella Typhimurium strains. One strain was attenuated via deletion of the cya and crp genes. The second strain was engineered to exhibit a programmed delayed lysis phenotype. Both strains were able to produce both monomeric fusion proteins and fully assembled core particles. Mice orally immunized with the strain exhibiting delayed lysis induced significantly greater antibody titers than the Δcya Δcrp strain and provided moderate protection against weight loss to a low level challenge with the influenza strain A/WSN/33 modified to express the M2e sequence common to avian viruses. Further studies indicated that the Salmonella expressed core antigen induced comparable antibody levels to the purified core antigen injected with an alum adjuvant and that both are able to reduce viral replication in the lungs. To our knowledge this is the first report demonstrating Salmonella-mediated delivery of influenza virus M2e protein in a mammalian host to induce a protective immune response against viral challenge.

Original languageEnglish (US)
Pages (from-to)6704-6713
Number of pages10
JournalVaccine
Volume28
Issue number41
DOIs
StatePublished - Sep 2010

Fingerprint

Woodchuck hepatitis virus
Woodchuck Hepatitis B Virus
virus-like particles
Salmonella
influenza
Virion
Human Influenza
Phenotype
Antigens
phenotype
Salmonella Vaccines
Attenuated Vaccines
Synthetic Vaccines
Proteins
Influenza in Birds
Antibodies
Salmonella typhimurium
Orthomyxoviridae
antigens
Weight Loss

Keywords

  • Influenza
  • M2e
  • RASV
  • Salmonella
  • Virus-like particle

ASJC Scopus subject areas

  • Immunology and Microbiology(all)
  • Infectious Diseases
  • Public Health, Environmental and Occupational Health
  • veterinary(all)
  • Molecular Medicine

Cite this

Delivery of woodchuck hepatitis virus-like particle presented influenza M2e by recombinant attenuated Salmonella displaying a delayed lysis phenotype. / Ameiss, Keith; Ashraf, Shamaila; Kong, Wei; Pekosz, Andrew; Wu, Wai Hong; Milich, David; Billaud, Jean Noel; Curtiss, Roy.

In: Vaccine, Vol. 28, No. 41, 09.2010, p. 6704-6713.

Research output: Contribution to journalArticle

Ameiss, Keith ; Ashraf, Shamaila ; Kong, Wei ; Pekosz, Andrew ; Wu, Wai Hong ; Milich, David ; Billaud, Jean Noel ; Curtiss, Roy. / Delivery of woodchuck hepatitis virus-like particle presented influenza M2e by recombinant attenuated Salmonella displaying a delayed lysis phenotype. In: Vaccine. 2010 ; Vol. 28, No. 41. pp. 6704-6713.
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