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@article{1837040,
author = {Štefánik, Michal and Bhosale, Dattatry Shivajirao and Haviernik, Jan and Straková, Petra and Fojtíková, Martina and Dufková, Lucie and Huvarová, Ivana and Salát, Jiří and Bartáček, Jan and Svoboda, Jan and Sedlák, Miloš and Růžek, Daniel and Miller, Andrew D. and Eyer, Luděk},
article_location = {Basel},
article_number = {2},
doi = {http://dx.doi.org/10.3390/v14020354},
keywords = {enveloped virus; diphyllin; cleistanthin B; vacuolar ATPase inhibitor; antiviral activity; cytotoxicity},
language = {eng},
issn = {1999-4915},
journal = {Viruses},
title = {Diphyllin Shows a Broad-Spectrum Antiviral Activity against Multiple Medically Important Enveloped RNA and DNA Viruses},
url = {https://www.mdpi.com/1999-4915/14/2/354},
volume = {14},
year = {2022}
}
TY - JOUR
ID - 1837040
AU - Štefánik, Michal - Bhosale, Dattatry Shivajirao - Haviernik, Jan - Straková, Petra - Fojtíková, Martina - Dufková, Lucie - Huvarová, Ivana - Salát, Jiří - Bartáček, Jan - Svoboda, Jan - Sedlák, Miloš - Růžek, Daniel - Miller, Andrew D. - Eyer, Luděk
PY - 2022
TI - Diphyllin Shows a Broad-Spectrum Antiviral Activity against Multiple Medically Important Enveloped RNA and DNA Viruses
JF - Viruses
VL - 14
IS - 2
SP - 1-21
EP - 1-21
PB - MDPI
SN - 19994915
KW - enveloped virus
KW - diphyllin
KW - cleistanthin B
KW - vacuolar ATPase inhibitor
KW - antiviral activity
KW - cytotoxicity
UR - https://www.mdpi.com/1999-4915/14/2/354
N2 - Diphyllin is a natural arylnaphtalide lignan extracted from tropical plants of particular importance in traditional Chinese medicine. This compound has been described as a potent inhibitor of vacuolar (H+)ATPases and hence of the endosomal acidification process that is required by numerous enveloped viruses to trigger their respective viral infection cascades after entering host cells by receptor-mediated endocytosis. Accordingly, we report here a revised, updated, and improved synthesis of diphyllin, and demonstrate its antiviral activities against a panel of enveloped viruses from Flaviviridae, Phenuiviridae, Rhabdoviridae, and Herpesviridae families. Diphyllin is not cytotoxic for Vero and BHK-21 cells up to 100 µM and exerts a sub-micromolar or low-micromolar antiviral activity against tick-borne encephalitis virus, West Nile virus, Zika virus, Rift Valley fever virus, rabies virus, and herpes-simplex virus type 1. Our study shows that diphyllin is a broad-spectrum host cell-targeting antiviral agent that blocks the replication of multiple phylogenetically unrelated enveloped RNA and DNA viruses. In support of this, we also demonstrate that diphyllin is more than just a vacuolar (H+)ATPase inhibitor but may employ other antiviral mechanisms of action to inhibit the replication cycles of those viruses that do not enter host cells by endocytosis followed by low pH-dependent membrane fusion.
ER -
ŠTEFÁNIK, Michal, Dattatry Shivajirao BHOSALE, Jan HAVIERNIK, Petra STRAKOVÁ, Martina FOJTÍKOVÁ, Lucie DUFKOVÁ, Ivana HUVAROVÁ, Jiří SALÁT, Jan BARTÁČEK, Jan SVOBODA, Miloš SEDLÁK, Daniel RŮŽEK, Andrew D. MILLER and Luděk EYER. Diphyllin Shows a Broad-Spectrum Antiviral Activity against Multiple Medically Important Enveloped RNA and DNA Viruses. \textit{Viruses}. Basel: MDPI, 2022, vol.~14, No~2, p.~1-21. ISSN~1999-4915. Available from: https://dx.doi.org/10.3390/v14020354.
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