Long-term protection from SARS coronavirus infection conferred by a single immunization with an attenuated VSV-based vaccine

Virology. 2005 Sep 30;340(2):174-82. doi: 10.1016/j.virol.2005.06.016.

Abstract

Although the recent SARS coronavirus (SARS-CoV) that appeared in 2002 has now been contained, the possibility of re-emergence of SARS-CoV remains. Due to the threat of re-emergence, the overall fatality rate of approximately 10%, and the rapid dispersion of the virus via international travel, viable vaccine candidates providing protection from SARS are clearly needed. We developed an attenuated VSV recombinant (VSV-S) expressing the SARS coronavirus (SARS-CoV) spike (S) protein. In cells infected with this recombinant, S protein was synthesized, glycosylated at approximately 17 Asn residues, and transported via the Golgi to the cell surface. Mice vaccinated with VSV-S developed SARS-neutralizing antibody and were able to control a challenge with SARS-CoV performed at 1 month or 4 months after a single vaccination. We also demonstrated, by passive antibody transfer, that the antibody response induced by the vaccine was sufficient for controlling SARS-CoV infection. A VSV-vectored SARS vaccine could have significant advantages over other SARS vaccine candidates described to date.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Antibody Formation
  • Cell Line
  • Cricetinae
  • DNA Primers
  • Immunity, Cellular
  • Kidney
  • Mice
  • Reverse Transcriptase Polymerase Chain Reaction
  • Severe Acute Respiratory Syndrome / immunology*
  • Severe acute respiratory syndrome-related coronavirus / genetics
  • Severe acute respiratory syndrome-related coronavirus / immunology*
  • Vaccines, Attenuated
  • Vaccines, DNA
  • Vesicular stomatitis Indiana virus / immunology*
  • Viral Vaccines

Substances

  • DNA Primers
  • Vaccines, Attenuated
  • Vaccines, DNA
  • Viral Vaccines