Abstract：
:Quaternary ammonium compounds (QACs) are classified as cationic surfactants, and are known for their biocidal activity. However, their modes of action are thus far not completely understood. In this study, we synthesized a gemini QAC, PMT12-BF4 and found that it exerted unsurpassed broad-spectrum antifungal activity against drug susceptible and resistant Candida albicans, and other pathogenic fungi, with a minimal inhibitory concentration (MIC) at 1 or 2 μg/mL. These results indicated that PMT12-BF4 used a mode of action distinct from current antifungal drugs. In addition, fungal pathogens treated with PMT12-BF4 were not able to grow on fresh YPD agar plates, indicating that the effect of PMT12-BF4 was fungicidal, and the minimal fungicidal concentration (MFC) against C. albicans isolates was 1 or 2 μg/mL. The ability of yeast-to-hyphal transition and biofilm formation of C. albicans was disrupted by PMT12-BF4. To investigate the modes of action of PMT12-BF4 in C. albicans, we used an RNA sequencing approach and screened a C. albicans deletion mutant library to identify potential pathways affected by PMT12-BF4. Combining these two approaches with a spotting assay, we showed that the ability of PMT12-BF4 to inhibit C. albicans is potentially linked to iron ion homeostasis.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hsu LH,Kwaśniewska D,Wang SC,Shen TL,Wieczorek D,Chen YLdoi
10.1038/s41598-020-59750-5subject
Has Abstractpub_date
2020-02-19 00:00:00pages
2911issue
1issn
2045-2322pii
10.1038/s41598-020-59750-5journal_volume
10pub_type
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