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Abstract Title:

Epigallocatechin-3-gallate inhibits the early stages of Japanese encephalitis virus infection.

Abstract Source:

Virus Res. 2018 Jun 26. Epub 2018 Jun 26. PMID: 29958923

Abstract Author(s):

Ching-Ying Wang, Mann-Jen Hour, Hsueh-Chou Lai, Chao-Hsien Chen, Pei-Jung Chang, Su-Hua Huang, Cheng-Wen Lin

Article Affiliation:

Ching-Ying Wang

Abstract:

Epigallocatechin-3-gallate (EGCG), a green tea catechin, shows broad sepectrum antiviral activity against many RNA and DNA viruses. This study investigated the antiviral efficacy of EGCG against Japanese encephalitis virus (JEV), a zoonotic flavivirus in Southeast Asia and the Western Pacific region. EGCG concentration-dependently reduced CPE, sub-G1 phase, and virus yield of infected cells with different JEV strains at different MOIs. The antiviral activity of EGCG against JEV in different assays declined in the following order: virus yield (ICof 7.0 μM)>virus attachment (ICof 7.9 μM)>virus entry (ICof 9.4 μM)>receptor binding and post-entry. However, EGCG had no virucidal effect on the infectivity of JEV particles. The results indicated that antiviral mechanism of EGCG against JEV was associated with blocking the early steps of JEV infection. The study suggests EGCG as a lead compound for developing broad-spectrum antiviral agents.

Study Type : In Vitro Study

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Sayer Ji
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