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- W779713062 abstract "Chikungunya virus (CHIKV) is a mosquito-borne alphavirus that causes severe and often persistent arthritis. In recent years, millions of people have been infected with this virus for which registered antivirals are still lacking. Using our recently established in vitro assay, we discovered that the approved anti-parasitic drug suramin inhibits CHIKV RNA synthesis (IC50 of ∼5μM). The compound inhibited replication of various CHIKV isolates in cell culture with an EC50 of ∼80μM (CC50>5mM) and was also active against Sindbis virus and Semliki Forest virus. In vitro studies hinted that suramin interferes with (re)initiation of RNA synthesis, whereas time-of-addition studies suggested it to also interfere with a post-attachment early step in infection, possibly entry. CHIKV (nsP4) mutants resistant against favipiravir or ribavirin, which target the viral RNA polymerase, did not exhibit cross-resistance to suramin, suggesting a different mode of action. The assessment of the activity of a variety of suramin-related compounds in cell culture and the in vitro assay for RNA synthesis provided more insight into the moieties required for antiviral activity. The antiviral effect of suramin-containing liposomes was also analyzed. Its approved status makes it worthwhile to explore the use of suramin to prevent and/or treat CHIKV infections." @default.
- W779713062 created "2016-06-24" @default.
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- W779713062 date "2015-09-01" @default.
- W779713062 modified "2023-10-18" @default.
- W779713062 title "Suramin inhibits chikungunya virus replication through multiple mechanisms" @default.
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- W779713062 doi "https://doi.org/10.1016/j.antiviral.2015.06.013" @default.
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