A single dose of recombinant VSV-∆G-spike vaccine provides protection against SARS-CoV-2 challenge

Nat Commun. 2020 Dec 16;11(1):6402. doi: 10.1038/s41467-020-20228-7.

Abstract

The COVID-19 pandemic caused by SARS-CoV-2 imposes an urgent need for rapid development of an efficient and cost-effective vaccine, suitable for mass immunization. Here, we show the development of a replication competent recombinant VSV-∆G-spike vaccine, in which the glycoprotein of VSV is replaced by the spike protein of SARS-CoV-2. In-vitro characterization of this vaccine indicates the expression and presentation of the spike protein on the viral membrane with antigenic similarity to SARS-CoV-2. A golden Syrian hamster in-vivo model for COVID-19 is implemented. We show that a single-dose vaccination results in a rapid and potent induction of SARS-CoV-2 neutralizing antibodies. Importantly, vaccination protects hamsters against SARS-CoV-2 challenge, as demonstrated by the abrogation of body weight loss, and alleviation of the extensive tissue damage and viral loads in lungs and nasal turbinates. Taken together, we suggest the recombinant VSV-∆G-spike as a safe, efficacious and protective vaccine against SARS-CoV-2.

MeSH terms

  • Animals
  • Antibodies, Viral / immunology
  • Antigens, Viral / immunology
  • Body Weight
  • COVID-19 / immunology*
  • COVID-19 / prevention & control*
  • COVID-19 / virology
  • COVID-19 Vaccines / immunology*
  • Cell Line
  • Cricetinae
  • Disease Models, Animal
  • Dose-Response Relationship, Immunologic
  • Genome, Viral
  • Lung / pathology
  • Lung / virology
  • Mice, Inbred C57BL
  • Mutation / genetics
  • SARS-CoV-2 / genetics
  • SARS-CoV-2 / immunology*
  • Spike Glycoprotein, Coronavirus / genetics
  • Spike Glycoprotein, Coronavirus / immunology*
  • Spike Glycoprotein, Coronavirus / ultrastructure
  • Vaccination
  • Vaccines, Synthetic / immunology*
  • Vesicular stomatitis Indiana virus / immunology*
  • Viral Load

Substances

  • Antibodies, Viral
  • Antigens, Viral
  • COVID-19 Vaccines
  • Spike Glycoprotein, Coronavirus
  • Vaccines, Synthetic