A dual drug regimen synergistically blocks human parainfluenza virus infection.

Abstract : Human parainfluenza type-3 virus (hPIV-3) is one of the principal aetiological agents of acute respiratory illness in infants worldwide and also shows high disease severity in the elderly and immunocompromised, but neither therapies nor vaccines are available to treat or prevent infection, respectively. Using a multidisciplinary approach we report herein that the approved drug suramin acts as a non-competitive in vitro inhibitor of the hPIV-3 haemagglutinin-neuraminidase (HN). Furthermore, the drug inhibits viral replication in mammalian epithelial cells with an IC50 of 30 μM, when applied post-adsorption. Significantly, we show in cell-based drug-combination studies using virus infection blockade assays, that suramin acts synergistically with the anti-influenza virus drug zanamivir. Our data suggests that lower concentrations of both drugs can be used to yield high levels of inhibition. Finally, using NMR spectroscopy and in silico docking simulations we confirmed that suramin binds HN simultaneously with zanamivir. This binding event occurs most likely in the vicinity of the protein primary binding site, resulting in an enhancement of the inhibitory potential of the N-acetylneuraminic acid-based inhibitor. This study offers a potentially exciting avenue for the treatment of parainfluenza infection by a combinatorial repurposing approach of well-established approved drugs.
Type de document :
Article dans une revue
Scientific Reports, Nature Publishing Group, 2016, 6 (24138), pp.24138. 〈http://www.nature.com/articles/srep24138〉. 〈10.1038/srep24138〉
Liste complète des métadonnées

Littérature citée [52 références]  Voir  Masquer  Télécharger

Contributeur : Benjamin Bailly <>
Soumis le : jeudi 14 avril 2016 - 02:19:29
Dernière modification le : lundi 5 février 2018 - 15:22:10


Publication financée par une institution


Distributed under a Creative Commons Paternité 4.0 International License




Benjamin Bailly, Larissa Dirr, Ibrahim M El-Deeb, Ralf Altmeyer, Patrice Guillon, et al.. A dual drug regimen synergistically blocks human parainfluenza virus infection.. Scientific Reports, Nature Publishing Group, 2016, 6 (24138), pp.24138. 〈http://www.nature.com/articles/srep24138〉. 〈10.1038/srep24138〉. 〈pasteur-01302307〉



Consultations de la notice


Téléchargements de fichiers