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The Negative Effect of Protein Phosphatase Z1 Deletion on the Oxidative Stress Tolerance of Candida albicans Is Synergistic with Betamethasone Exposure

Jakab, Ágnes and Emri, Tamás and Csillag, Kinga Karola and Szabó, Anita and Nagy, Fruzsina and Baranyai, Edina and Sajtos, Zsófi and Géczi, Dóra Anikó and Antal, Károly and Kovács, Renátó and Szabó, Krisztina and Dombrádi, Viktor Béla and Pócsi, István (2021) The Negative Effect of Protein Phosphatase Z1 Deletion on the Oxidative Stress Tolerance of Candida albicans Is Synergistic with Betamethasone Exposure. JOURNAL OF FUNGI, 7. No.-540. ISSN 2309-608X

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Abstract

The glucocorticoid betamethasone (BM) has potent anti-inflammatory and immunosuppressive effects; however, it increases the susceptibility of patients to superficial Candida infections. Previously we found that this disadvantageous side effect can be counteracted by menadione sodium bisulfite (MSB) induced oxidative stress treatment. The fungus specific protein phosphatase Z1 (CaPpz1) has a pivotal role in oxidative stress response of Candida albicans and was proposed as a potential antifungal drug target. The aim of this study was to investigate the combined effects of CaPPZ1 gene deletion and MSB treatment in BM pre-treated C. albicans cultures. We found that the combined treatment increased redox imbalance, enhanced the specific activities of antioxidant enzymes, and reduced the growth in cappz1 mutant (KO) strain. RNASeq data demonstrated that the presence of BM markedly elevated the number of differentially expressed genes in the MSB treated KO cultures. Accumulation of reactive oxygen species, increased iron content and fatty acid oxidation, as well as the inhibiting ergosterol biosynthesis and RNA metabolic processes explain, at least in part, the fungistatic effect caused by the combined stress exposure. We suggest that the synergism between MSB treatment and CaPpz1 inhibition could be considered in developing of a novel combinatorial antifungal strategy accompanying steroid therapy.

Item Type: Article
Uncontrolled Keywords: PLASMA; RESISTANCE; GENE-EXPRESSION; SUSCEPTIBILITY; YEAST; microbiology; Fungi; glucocorticoid; Candida albicans; menadione; menadione; ATPASE; stress response; ANTIFUNGAL THERAPY; Combinatorial stress; Oxidative stress; protein phosphatase Z1; HOST COPPER;
Subjects: Q Science / természettudomány > QD Chemistry / kémia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia
Q Science / természettudomány > QL Zoology / állattan
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 29 Sep 2021 07:55
Last Modified: 29 Sep 2021 07:55
URI: http://real.mtak.hu/id/eprint/131356

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