TY - JOUR A1 - Bojkova, Denisa A1 - Zöller, Nadja Nicole A1 - Tietgen, Manuela A1 - Steinhorst, Katja A1 - Bechtel, Marco A1 - Rothenburger, Tamara A1 - Kandler, Joshua D. A1 - Schneider, Julia A1 - Corman, Victor Max A1 - Ciesek, Sandra A1 - Rabenau, Holger A1 - Wass, Mark N. A1 - Kippenberger, Stefan A1 - Göttig, Stephan A1 - Michaelis, Martin A1 - Cinatl, Jindrich T1 - Repurposing of the antibiotic nitroxoline for the treatment of mpox T2 - Journal of Medical Virology N2 - The antiviral drugs tecovirimat, brincidofovir, and cidofovir are considered for mpox (monkeypox) treatment despite a lack of clinical evidence. Moreover, their use is affected by toxic side-effects (brincidofovir, cidofovir), limited availability (tecovirimat), and potentially by resistance formation. Hence, additional, readily available drugs are needed. Here, therapeutic concentrations of nitroxoline, a hydroxyquinoline antibiotic with a favourable safety profile in humans, inhibited the replication of 12 mpox virus isolates from the current outbreak in primary cultures of human keratinocytes and fibroblasts and a skin explant model by interference with host cell signalling. Tecovirimat, but not nitroxoline, treatment resulted in rapid resistance development. Nitroxoline remained effective against the tecovirimat-resistant strain and increased the anti-mpox virus activity of tecovirimat and brincidofovir. Moreover, nitroxoline inhibited bacterial and viral pathogens that are often co-transmitted with mpox. In conclusion, nitroxoline is a repurposing candidate for the treatment of mpox due to both antiviral and antimicrobial activity. KW - antiviral drugs KW - antiviral therapy KW - chelator KW - drug repurposing KW - monkeypox KW - orthopoxvirus KW - poxvirus Y1 - 2023 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75062 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-750623 SN - 1096-9071 SN - 0146-6615 VL - 95 IS - 3, e28652 PB - Wiley CY - Bognor Regis [u.a.] ER -