1. Synergistic drug combination effectively blocks Ebola virus infection.
- Author
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Sun W, He S, Martínez-Romero C, Kouznetsova J, Tawa G, Xu M, Shinn P, Fisher E, Long Y, Motabar O, Yang S, Sanderson PE, Williamson PR, García-Sastre A, Qiu X, and Zheng W
- Subjects
- Animals, Cell Line, Chlorocebus aethiops, Clarithromycin pharmacology, Drug Combinations, Drug Synergism, Hemorrhagic Fever, Ebola drug therapy, Hemorrhagic Fever, Ebola virology, High-Throughput Screening Assays, Humans, Mefloquine pharmacology, Sphingomyelin Phosphodiesterase antagonists & inhibitors, Sphingomyelin Phosphodiesterase drug effects, Toremifene pharmacology, Triazoles pharmacology, Vero Cells, Antiviral Agents pharmacology, Ebolavirus drug effects, Virus Internalization drug effects
- Abstract
Although a group of FDA-approved drugs were previously identified with activity against Ebola virus (EBOV), most of them are not clinically useful because their human blood concentrations are not high enough to inhibit EBOV infection. We screened 795 unique three-drug combinations in an EBOV entry assay. Two sets of three-drug combinations, toremifene-mefloquine-posaconazole and toremifene-clarithromycin-posaconazole, were identified that effectively blocked EBOV entry and were further validated for inhibition of live EBOV infection. The individual drug concentrations in the combinations were reduced to clinically relevant levels. We identified mechanisms of action of these drugs: functional inhibitions of Niemann-Pick C1, acid sphingomyelinase, and lysosomal calcium release. Our findings identify the drug combinations with potential to treat EBOV infection., (Published by Elsevier B.V.)
- Published
- 2017
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