Development of Monoclonal Antibodies to Detect for SARS-CoV-2 Proteins

J Mol Biol. 2022 May 30;434(10):167583. doi: 10.1016/j.jmb.2022.167583. Epub 2022 Apr 8.

Abstract

The COVID-19 pandemic caused by SARS-CoV-2 infection has impacted the world economy and healthcare infrastructure. Key reagents with high specificity to SARS-CoV-2 proteins are currently lacking, which limits our ability to understand the pathophysiology of SARS-CoV-2 infections. To address this need, we initiated a series of studies to generate and develop highly specific antibodies against proteins from SARS-CoV-2 using an antibody engineering platform. These efforts resulted in 18 monoclonal antibodies against nine SARS-CoV-2 proteins. Here we report the characterization of several antibodies, including those that recognize Nsp1, Nsp8, Nsp12, and Orf3b viral proteins. Our validation studies included evaluation for use of antibodies in ELISA, western blots, and immunofluorescence assays (IFA). We expect that availability of these antibodies will enhance our ability to further characterize host-viral interactions, including specific roles played by viral proteins during infection, to acquire a better understanding of the pathophysiology of SARS-CoV-2 infections.

Keywords: SARS-CoV-2; antibody; phage display.

Publication types

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

MeSH terms

  • Antibodies, Monoclonal* / genetics
  • Antibodies, Monoclonal* / immunology
  • Antibodies, Viral* / genetics
  • Antibodies, Viral* / immunology
  • COVID-19* / metabolism
  • Cell Surface Display Techniques
  • Coronavirus RNA-Dependent RNA Polymerase / analysis
  • Enzyme-Linked Immunosorbent Assay
  • Humans
  • SARS-CoV-2* / metabolism
  • Viral Nonstructural Proteins / analysis
  • Viral Proteins* / analysis

Substances

  • Antibodies, Monoclonal
  • Antibodies, Viral
  • NS8 protein, SARS-CoV-2
  • NSP1 protein, SARS-CoV-2
  • ORF3d protein, SARS-CoV2 virus
  • Viral Nonstructural Proteins
  • Viral Proteins
  • Coronavirus RNA-Dependent RNA Polymerase
  • NSP12 protein, SARS-CoV-2