Surface display of domain III of Japanese encephalitis virus E protein on Salmonella typhimurium by using an ice nucleation protein

Virol Sin. 2011 Dec;26(6):409-17. doi: 10.1007/s12250-011-3216-7. Epub 2011 Dec 10.

Abstract

A bacterial cell surface display technique based on an ice nucleation protein has been employed for the development of live vaccine against viral infection. Due to its ubiquitous ability to invade host cells, Salmonella typhimurium might be a good candidate for displaying viral antigens. We demonstrated the surface display of domain III of Japanese encephalitis virus E protein and the enhanced green fluorescent protein on S. typhimurium BRD509 using the ice nucleation protein. The effects of the motif in the ice nucleation protein on the effective display of integral protein were also investigated. The results showed that display motifs in the protein can target integral foreign protein on the surface of S. typhimurium BRD509. Moreover, recombinant strains with surface displayed viral proteins retained their invasiveness, suggesting that the recombinant S. typhimurium can be used as live vaccine vector for eliciting complete immunogenicity. The data may yield better understanding of the mechanism by which ice nucleation protein displays foreign proteins in the Salmonella strain.

MeSH terms

  • Animals
  • Bacterial Outer Membrane Proteins / genetics*
  • Bacterial Outer Membrane Proteins / metabolism
  • Cell Line
  • Encephalitis Virus, Japanese / genetics*
  • Encephalitis Virus, Japanese / metabolism
  • Gene Expression*
  • Genetic Vectors / genetics
  • Genetic Vectors / metabolism
  • Humans
  • Protein Structure, Tertiary
  • Protein Transport
  • Recombinant Fusion Proteins / genetics
  • Recombinant Fusion Proteins / metabolism
  • Salmonella typhimurium / genetics*
  • Salmonella typhimurium / metabolism
  • Viral Envelope Proteins / chemistry*
  • Viral Envelope Proteins / genetics*
  • Viral Envelope Proteins / metabolism

Substances

  • Bacterial Outer Membrane Proteins
  • Recombinant Fusion Proteins
  • Viral Envelope Proteins
  • ice nucleation protein