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Bio-energetics Investigation of Candida albicans Using Real-time Extracellular Flux Analysis
Published on: March 19, 2019
Metergoline-induced cell death in Candida krusei.
Kai Kang1, Kin-Sing Wong, Wing-Ping Fong
1Biochemistry Programme, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China.
Fungal Biology
|March 1, 2011
Summary
Metergoline effectively combats drug-resistant Candida krusei by inducing cell death. This antifungal agent triggers reactive oxygen species (ROS) accumulation and mitochondrial dysfunction, leading to fungal demise.
Area of Science:
- Mycology
- Biochemistry
- Cell Biology
Background:
- Candida krusei presents a significant challenge due to inherent resistance to conventional antifungal therapies.
- Understanding the mechanisms of novel antifungal agents is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the cell death mechanisms of metergoline in Candida krusei.
- To elucidate the effects of metergoline on classical apoptosis markers in C. krusei.
Main Methods:
- Fungal cell treatment with varying concentrations of metergoline.
- Assessment of intracellular reactive oxygen species (ROS) levels.
- Mitochondrial membrane potential analysis using flow cytometry.
- Detection of phosphatidylserine externalization and DNA fragmentation via fluorescence microscopy.
Main Results:
- Metergoline induced a concentration-dependent increase in intracellular ROS and mitochondrial membrane potential depolarization.
- Prolonged exposure resulted in phosphatidylserine externalization and DNA fragmentation, indicative of apoptosis.
- Evidence of necrosis was also observed, suggesting multiple cell death pathways.
Conclusions:
- Metergoline triggers cell death in Candida krusei by elevating ROS levels and disrupting mitochondrial homeostasis.
- The compound initiates a cascade leading to nuclear damage and eventual cell demise.
- Metergoline shows promise as an antifungal agent against resistant Candida strains.
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