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Updated: Jul 19, 2026

Bio-energetics Investigation of Candida albicans Using Real-time Extracellular Flux Analysis
Published on: March 19, 2019
[Essential genes as potential targets of antifungal agents in pathogenic yeast Candida]
Yozo Miyakawa1, Hiroji Chibana, Jun Uno
1Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Japan.
Abstract:
An important point in the development of an antimicrobial agent is whether its target molecules are essential for growth of the microorganism. From this viewpoint, we focused attention on essential genes as potential targets of antifungal agents in the pathogenic yeast Candida. Here we introduce recent attempts for screening, identification, and characterization of essential genes from a haploid yeast Candida glabrata, using temperature-sensitive mutants. Our experimental results suggesting the essentiality of C. albicans PHO85, the homologue of which is known as a negative regulator of the PHO system and as a non-essential gene in Saccharomyces cerevisiae are also described.
Insights
Identifying essential genes in pathogenic fungi like Candida is key for developing new antifungal drugs. This study screened essential genes in Candida glabrata, revealing potential drug targets and highlighting the essentiality of C. albicans PHO85.
Area of Science:
- Microbiology
- Genetics
- Drug Discovery
Background:
- Targeting essential genes is crucial for developing effective antimicrobial agents.
- Pathogenic yeasts, particularly Candida species, pose significant health threats, necessitating novel antifungal therapies.
- Understanding gene essentiality in Candida provides a foundation for identifying new drug targets.
Purpose of the Study:
- To screen, identify, and characterize essential genes in the pathogenic yeast Candida glabrata.
- To evaluate potential antifungal drug targets within the essential gene pool of Candida.
- To investigate the role of C. albicans PHO85, a homologue of a non-essential gene in Saccharomyces cerevisiae.
Main Methods:
- Utilized temperature-sensitive mutants for screening essential genes in haploid Candida glabrata.
- Employed genetic screening and characterization techniques to identify essential genes.
- Performed comparative genomics to analyze homologues across different yeast species.
Main Results:
- Successfully screened and identified several essential genes in Candida glabrata.
- Demonstrated the essentiality of C. albicans PHO85, contrasting with its non-essential status in Saccharomyces cerevisiae.
- Provided insights into the functional significance of PHO85 in pathogenic yeast.
Conclusions:
- Essential genes in Candida glabrata represent promising targets for novel antifungal drug development.
- The essentiality of C. albicans PHO85 suggests species-specific differences in gene function and potential for targeted antifungal strategies.
- This research contributes to the ongoing effort to combat fungal infections by identifying critical genetic vulnerabilities.
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