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Generation, Amplification, and Titration of Recombinant Respiratory Syncytial Viruses
11:48

Generation, Amplification, and Titration of Recombinant Respiratory Syncytial Viruses

Published on: April 4, 2019

RAGE inhibits human respiratory syncytial virus syncytium formation by interfering with F-protein function

Jane Tian1, Kelly Huang1, Subramaniam Krishnan1

  • 1Research Department, MedImmune LLC, One MedImmune Way, Gaithersburg, MD 20878, USA.

The Journal of General Virology
|April 6, 2013
PubMed

Insights

The receptor for advanced glycation end products (RAGE) protects against respiratory syncytial virus (RSV) by blocking cell fusion. RAGE inhibits syncytia formation, reducing viral spread and airway damage.

Area of Science:

  • Virology
  • Immunology
  • Cell Biology

Background:

  • Human respiratory syncytial virus (RSV) causes severe lower respiratory tract infections.
  • The RSV fusion (F) protein is essential for viral entry and cell-to-cell spread, forming syncytia.
  • Receptor for advanced glycation end products (RAGE) is expressed in lung epithelial cells.

Purpose of the Study:

  • To investigate the role of RAGE in protecting against RSV infection.
  • To determine the mechanism by which RAGE interacts with the RSV F protein.

Main Methods:

  • HEK cell cultures were used to assess RAGE's protective effects.
  • Viral load and syncytium formation were measured in the presence and absence of RAGE.
  • Interactions between RAGE and the RSV F protein were analyzed.

Main Results:

  • RAGE protected HEK cells from RSV-induced cell death and reduced viral titers.
  • RAGE did not inhibit RSV entry, replication, or budding.
  • Membrane-bound and soluble RAGE inhibited F protein-mediated syncytium formation and cell sloughing.

Conclusions:

  • RAGE inhibits RSV-induced syncytia formation, a key mechanism of viral spread and pathogenesis.
  • RAGE may protect the lower airways from RSV by preventing syncytia, epithelial damage, and airway obstruction.

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