Identification and in vivo Efficacy Assessment of Approved Orally Bioavailable Human Host Protein-Targeting Drugs With Broad Anti-influenza A Activity

Identification and in vivo Efficacy Assessment of Approved Orally Bioavailable Human Host Protein-Targeting Drugs With Broad Anti-influenza A Activity
Title:
Identification and in vivo Efficacy Assessment of Approved Orally Bioavailable Human Host Protein-Targeting Drugs With Broad Anti-influenza A Activity
Other Titles:
Frontiers in Immunology
DOI:
10.3389/fimmu.2019.01097
Publication Date:
05 June 2019
Citation:
Enkirch T, Sauber S, Anderson DE, Gan ES, Kenanov D, Maurer-Stroh S and von Messling V (2019) Identification and in vivo Efficacy Assessment of Approved Orally Bioavailable Human Host Protein-Targeting Drugs With Broad Anti-influenza A Activity. Front. Immunol. 10:1097. doi: 10.3389/fimmu.2019.01097
Abstract:
The high genetic variability of influenza A viruses poses a continual challenge to seasonal and pandemic vaccine development, leaving antiviral drugs as the first line of defense against antigenically different strains or new subtypes. As resistance against drugs targeting viral proteins emerges rapidly, we assessed the antiviral activity of already approved drugs that target cellular proteins involved in the viral life cycle and were orally bioavailable. Out of 15 candidate compounds, four were able to inhibit infection by 10- to 100-fold without causing toxicity, in vitro. Two of the drugs, dextromethorphan and ketotifen, displayed a 50% effective dose between 5 and 50 μM, not only for the classic H1N1 PR8 strain, but also for a pandemic H1N1 and a seasonal H3N2 strain. Efficacy assessment in mice revealed that dextromethorphan consistently resulted in a significant reduction of viral lung titers and also enhanced the efficacy of oseltamivir. Dextromethorphan treatment of ferrets infected with a pandemic H1N1 strain led to a reduction in clinical disease severity, but no effect on viral titer was observed. In addition to identifying dextromethorphan as a potential influenza treatment option, our study illustrates the feasibility of a bioinformatics-driven rational approach for repurposing approved drugs against infectious diseases.
License type:
http://creativecommons.org/licenses/by/4.0/
Funding Info:
This work was supported in part by funding from the German Center for Infection Research, the German Ministry of Health, and a DUKE-NUS Signature Research Program start-up grant funded by the Agency for Science, Technology, and Research (A∗STAR), grant no. N.A., Singapore and the Ministry of Health, Singapore grant no. N.A. to VvM, and A∗STAR grant H1699f0013 to SM-S.
Description:
ISSN:
1664-3224
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