Journal
BIOMEDICINE & PHARMACOTHERAPY
Volume 154, Issue -, Pages -Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.biopha.2022.113569
Keywords
Candida glabrata; Human ?-defensins-1; Antimicrobial peptides; Cell cycle arrest; Antioxidant enzymes
Funding
- Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia [IFPRC-085-130-2020]
- King Abdulaziz University
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This study investigated the antifungal effect of human beta defensin-1 (hBD-1) and its mechanism of action in Candida glabrata. The results showed that hBD-1 exhibited antifungal activity against C. glabrata and induced oxidative stress and cell cycle arrest. This suggests that hBD-1 has the potential to be developed as an antifungal drug.
Candida glabrata is the most frequently isolated non-albicans Candida species in clinical samples and is known to develop resistance to commonly used antifungal drugs. Human beta defensins (hBDs) are antimicrobial peptides of immune systems and are active against a broad range of pathogens including Candida species. Herein, the antifungal effect of hBD-1 and its mechanism of action in C. glabrata was studied. The antifungal susceptibility of hBD-1 against C. glabrata was calculated by broth microdilution assay. To study the mechanism of antifungal action, the impact of hBD-1 on cell cycle, expression of oxidative stress enzymes, and membrane disintegration were assessed. The susceptibility results confirmed that hBD-1 possessed the minimum inhibitory concentration of 3.12 mu g/mL and prevented the growth and caused yeast cell death to various extents. The peptide at subin-hibitory and inhibitory concentrations blocked the cell cycle in C. glabrata in G0/G1 phase and disturbed the activity of primary and secondary antioxidant enzymes. Furthermore, at higher concentrations disruption of membrane integrity was observed. Altogether, hBD-1 showed candidicidal activity against C. glabrata and was able to induce oxidative stress and arrested cell cycle in C. auris and therefore has a potential to be developed as an antifungal drug against C. glabrata.
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