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• W4378232661 abstract "Abstract Lujo virus (LUJV), which belongs to Mammarenavirus, family arenaviridae , has emerged as pathogen causing severe hemorrhage fever with high mortality. Currently, there are no effective treatments for arenaviruses, including LUJV. Here, we screened chemical compound libraries of Food and Drug Administration (FDA)-approved drug and G protein-coupled receptor-associated drugs to identify effective antivirals against LUJV targeting cell entry using a vesicular stomatitis virus-based pseudotyped virus bearing the LUJV envelope glycoprotein (GP). Cannabinoid receptor 1 (CB1) antagonists, such as rimonabant, AM251 and AM281, have been identified as robust inhibitors of LUJV entry. The IC 50 of rimonabant was 0.26 and 0.53 μM in Vero and Huh7 cells, respectively. Analysis of the cell fusion activity of the LUJV GP in the presence of CB1 inhibitors revealed that these inhibitors suppressed the fusion activity of the LUJV GP. Moreover, rimonabant, AM251 and AM281 reduced the infectivity of authentic LUJV in vitro, suggesting that the antiviral activity of CB1 antagonists against LUJV is mediated, at least in part, by inhibition of the viral entry, especially, membrane fusion. These findings suggest promising candidates for developing new therapies against LUJV infections. Importance To investigate antiviral drugs against Lujo virus (LUJV), we screened chemical compound libraries to identify effective antivirals against LUJV entry. CB1 antagonists were identified as robust inhibitors of LUJV entry. The cell fusion activity of LUJV GP was suppressed by CB1 inhibitors. Furthermore, CB1 antagonists reduced the infectivity of authentic LUJV. These findings suggest promising candidates for developing new therapies against LUJV infections." @default.
• W4378232661 created "2023-05-26" @default.
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• W4378232661 date "2023-05-24" @default.
• W4378232661 modified "2023-10-16" @default.
• W4378232661 title "Inhibitors of cannabinoid receptor 1 suppress the cellular entry of Lujo virus" @default.
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• W4378232661 doi "https://doi.org/10.1101/2023.05.24.542186" @default.
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