Sertraline as a promising antifungal agent: inhibition of growth and biofilm of Candida auris with special focus on the mechanism of action in vitro

麦角甾醇 金念珠菌 舍曲林 甾醇 微生物学 生物膜 抗真菌药 作用机理 药理学 菌丝 生物 化学 生物化学 抗真菌 体外 细菌 胆固醇 遗传学 抗抑郁药 神经科学 海马体
作者
M. Gowri,B. Jayashree,J. Jeyakanthan,E.K. Girija
出处
期刊:Journal of Applied Microbiology [Wiley]
卷期号:128 (2): 426-437 被引量:52
标识
DOI:10.1111/jam.14490
摘要

The aim of this present study was to investigate the antifungal mechanism of sertraline against Candida auris (C. auris) and its effect on biofilm formation.Sertraline, a repurposing drug with a history of human use for the treatment of depression was screened against three different isolates of C. auris, and was found to possess efficient antifungal activity. The antifungal activity of sertraline was further confirmed by killing kinetics assay and post-antifungal effect (PAFE). Sertraline inhibited C. auris yeast to hyphae conversion and further the inhibition of biofilm formation showed 71% inhibition upon treatment. Cell damage caused due to C. auris after treatment with sertraline was observed using SEM and cell membrane damage was ascertained using flow cytometry by Propidium Iodide (PI) uptake assay. The results of sorbitol protection assay and ergosterol effect assay suggested that sertraline did not affect the cell wall and did not act by binding to membrane ergosterol. The mechanism of action of sertraline against C. auris was understood through in silico docking studies that revealed the binding nature of sertraline to the sterol 14 alpha demethylase which is involved in ergosterol biosynthesis. Ergosterol that was quantified from treated cells showed a 5·5-fold decrease in ergosterol production.Sertraline displayed promising antifungal activity against C. auris involved in candidiasis infection and the mechanism of action was predicted.The results of this study can encourage for the development of new antifungal agents and can be promising antifungal agent against C. auris infection.
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