Abstract
Chikungunya is a severe disease that results from infection with the chikungunya virus (CHIKV), an arbovirus. Thus, we (1) explored a new approach to combining previously researched drugs that have shown the potential to inhibit CHIKV infection; and (2) demonstrated the antiviral effects of (−)-Epigallocatechin-3-gallate (EGCG) and the underlying mechanisms. Specifically, we used U2OS cells infected with CHIVK to assess the synergistic antiviral activities of EGCG and suramin. EGCG presented the ability to inhibit the viral RNA, progeny yield, and cytopathic effect (CPE) of CHIKV and also demonstrated the ability to protect against virus entry, replication, and release. Moreover, the results confirmed that EGCG and suramin can have synergistic effects against CHIKV strain S27 infection and two other clinical isolates of CHIKV. Our findings suggest that treatment with a combination of EGCG and suramin could provide a basis for the development of novel stretages against CHIKV infection.
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