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Chan W, Chow FWN, Tsang CC, Liu X, Yao W, Chan TTY, Siu GKH, Ho AYM, Luk KS, Lau SKP, Woo PCY. Induction of amphotericin B resistance in susceptible Candida auris by extracellular vesicles. Emerg Microbes Infect 2022; 11:1900-1909. [PMID: 35786393 PMCID: PMC9341352 DOI: 10.1080/22221751.2022.2098058] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Drug resistance derived from extracellular vesicles (EVs) is an increasingly important research area but has seldom been described regarding fungal pathogens. Here, we characterized EVs derived from a triazole-resistant but amphotericin B-susceptible strain of Candida auris. Nano- to microgram concentrations of C. auris EVs prepared from both broth and solid agar cultures could robustly increase the yeast’s survival against both pure and clinical amphotericin B formulations in a dose-dependent manner, resulting in up to 16-fold changes of minimum inhibitory concentration. Meanwhile, this effect was not observed upon addition of these EVs to C. albicans, nor upon addition of C. albicans EVs to C. auris. No change in susceptibilities was observed upon EV treatment for fluconazole, voriconazole, micafungin, and flucytosine. Mass spectrometry indicated the presence of immunogenic-/drug resistance-implicated proteins in C. auris EVs, including alcohol dehydrogenase 1 as well as C. albicans Mp65-like and Xog1-like proteins in high quantities. Based on these observations, we propose a potential species-specific role for EVs in amphotericin B resistance in C. auris. These observations may provide critical insights into treatment of multidrug-resistant C. auris.
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Affiliation(s)
- Walton Chan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Franklin Wang-Ngai Chow
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.,Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hunghom, Hong Kong
| | - Chi-Ching Tsang
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.,School of Medical and Health Sciences, Tung Wah College, Homantin, Hong Kong
| | - Xueyan Liu
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Weiming Yao
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Tony Tat-Yin Chan
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Gilman Kit-Hang Siu
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hunghom, Hong Kong
| | - Alex Yat-Man Ho
- Department of Pathology, Princess Margaret Hospital, Kwai Chung, Hong Kong
| | - Kristine Shik Luk
- Department of Pathology, Princess Margaret Hospital, Kwai Chung, Hong Kong
| | - Susanna Kar-Pui Lau
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Patrick Chiu-Yat Woo
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong.,PhD Program in Translational Medicine and Department of Life Sciences, National Chung Hsing University, Taichung 402, Taiwan.,The iEGG and Animal Biotechnology Research Center, National Chung Hsing University, Taichung 402, Taiwan
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