Package of NDV-pseudotyped HIV-Luc virus and its application in the neutralization assay for NDV infection

PLoS One. 2014 Jun 17;9(6):e99905. doi: 10.1371/journal.pone.0099905. eCollection 2014.

Abstract

Newcastle disease virus (NDV) is a member of the Paramyxovirinae subfamily and can infect most species of birds. It has been a great threat for the poultry industry all around the world. In this report, we successfully produced infectious pseudotyped pNL4-3-Luc-R(-)E(-) (HIV-Luc) viruses with the HN and F envelope proteins of NDV. Further investigation revealed the cytoplasmic domains of HN and F, especially HN, plays a significant role in the infection efficiency of these pseudotyped HIV-Luc viruses. Replacement of, or direct fusion to the cytoplasmic domain of the HN protein by that of vesicular stomatitis virus G (VSV-G) could greatly enhance or destroy the infective potential of HN and F-pseudotyped (NDV-pseudotyped) HIV-Luc virus. We further established a novel neutralization assay to evaluate neutralizing antibodies against NDV with the NDV-pseudotyped HIV-Luc viruses. Comparative neutralization data indicate that the results determined by using the NDV-pseudotyped HIV-Luc viruses are as reliable as those by the conventional virus-neutralization assay (VN test) with native NDV. Moreover, the results show that the novel neutralization assay is more sensitive than the VN test.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antibodies, Neutralizing / physiology
  • Antibodies, Viral / physiology
  • Birds
  • Genes, Reporter
  • HEK293 Cells
  • HIV-1 / genetics*
  • HN Protein / genetics
  • Humans
  • Immune Sera / immunology
  • Luciferases / biosynthesis
  • Luciferases / genetics
  • Neutralization Tests
  • Newcastle Disease / immunology*
  • Newcastle Disease / prevention & control
  • Newcastle Disease / virology
  • Newcastle disease virus / genetics
  • Newcastle disease virus / immunology*
  • Viral Fusion Proteins / genetics

Substances

  • Antibodies, Neutralizing
  • Antibodies, Viral
  • HN Protein
  • Immune Sera
  • Viral Fusion Proteins
  • Luciferases

Grants and funding

This work was supported by grants from the Fundamental Research Funds for Central Public Welfare Research Institutes (0302013006) and State Key Laboratory of Veterinary Biotechnology Research Fund (SKLVBP201217). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.