[Characterization and development of recombinant vaccinia viruses expressing different segments of spike protein derived from human coronavirus NL-63]

Bing Du Xue Bao. 2011 May;27(3):250-6.
[Article in Chinese]

Abstract

The spike (S) glycoprotein of HCoV-NL63 is a major target in the development of diagnostic assays and vaccines, but its antigenic and immunogenic properties remain unclear. Four fragments coding spike proteins (S1, S2, RL and RS) from HCoV-NL63 were amplified and cloned into the expression vector derived from vaccinia virus (Tiantan strain), and recombinant vaccinia viruses expressing four segments of spike proteins were generated (vJSC1175-S1; vJSC1175-S2; vJSC1175-RL; vJSC1175-RS), respectively. Their expression location in cell and level were characterized using indirect immune fluorescence assay (IFA) and Western-Blot, respectively. The expressions of four segments of spike proteins in recombinant vaccinia viruses were showed at appropriate level and with posttranslational modification (glycosylation), and S1, RL and RS were mainly distributed in the cell membrane, while the S2 was mainly distributed in the cytoplasm. Our results provide a basis for further exploring diagnostic role and vaccine development of different spike segments from HCoV-NL63.

Publication types

  • English Abstract
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Base Sequence
  • Blotting, Western
  • Coronavirus NL63, Human / chemistry*
  • Fluorescent Antibody Technique, Indirect
  • Humans
  • Membrane Glycoproteins / biosynthesis
  • Membrane Glycoproteins / genetics*
  • Molecular Sequence Data
  • Plasmids
  • Recombinant Proteins / biosynthesis*
  • Spike Glycoprotein, Coronavirus
  • Vaccinia virus / genetics*
  • Viral Envelope Proteins / biosynthesis
  • Viral Envelope Proteins / genetics*

Substances

  • Membrane Glycoproteins
  • Recombinant Proteins
  • Spike Glycoprotein, Coronavirus
  • Viral Envelope Proteins