Rhinovirus-stabilizing activity of artificial VLDL-receptor variants defines a new mechanism for virus neutralization by soluble receptors

FEBS Lett. 2005 Oct 24;579(25):5507-11. doi: 10.1016/j.febslet.2005.09.013. Epub 2005 Sep 27.

Abstract

Members of the low-density lipoprotein receptor family possess various numbers of ligand binding repeats that non-equally contribute to binding of minor group human rhinoviruses. Using an artificial concatemer of five copies of repeat 3 of the human very-low density lipoprotein receptor, we demonstrate protection of HRV2 against low-pH mediated uncoating and inhibition of penetration of an RNA-specific fluorescent dye into the intact virion. This indicates that the recombinant receptor inhibits viral breathing and irreversible conformational modifications of the capsid that precede RNA release, providing a new mechanism for rhinovirus neutralization by soluble receptor molecules.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Retroviral Agents / chemistry
  • Anti-Retroviral Agents / pharmacology*
  • Fluorescent Dyes / analysis
  • Humans
  • RNA, Viral / analysis
  • RNA, Viral / drug effects*
  • Receptors, LDL / chemistry*
  • Receptors, LDL / metabolism
  • Recombinant Fusion Proteins / pharmacology*
  • Rhinovirus / drug effects*
  • Virion / chemistry
  • Virion / drug effects

Substances

  • Anti-Retroviral Agents
  • Fluorescent Dyes
  • MBP-V33333 peptide
  • RNA, Viral
  • Receptors, LDL
  • Recombinant Fusion Proteins
  • VLDL receptor