Identification of repositionable drugs with novel antimycotic activity by screening the Prestwick Chemical Library against emerging invasive moulds

Yousfi H, Ranque S, Cassagne C, Rolain JM, Bittar F
Journal of Global Antimicrobial Resistance - vol. 21 314-317 (2020)

Journal of Global Antimicrobial Resistance

Objectives: The incidence of severe filamentous fungal infections has increased over the past decade. Some of these filamentous fungi are resistant to available antifungals; it is thus urgent to find new compounds that are active against such life-threatening pathogens. Methods: In this study, 1280 drugs (Prestwick Chemical Library) were tested against six multidrug-resistant (MDR) filamentous fungi, includingAspergillus, Fusarium, Scedosporium/Lomentospora, Rhizopus and Lichtheimia species. Results: Several hits were identified that induced fungal growth inhibition ≥70%. Among the non-antifungal compounds that were effective against the clinical moulds tested in this study, clioquinol, alexidine dihydrochloride, hexachlorophene and thonzonium bromide displayed a broad activity against all strains tested. Conclusion: This study enriches the potential antifungal options that can be used against MDR invasive fungal diseases.

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