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Whole Genome Sequencing of Candida glabrata for Detection of Markers of Antifungal Drug Resistance
Published on: December 28, 2017
Evolutionary Emergence of Drug Resistance in Candida Opportunistic Pathogens
Ewa Ksiezopolska1,2, Toni Gabaldón3,4,5
1Bioinformatics and Genomics Programme, Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology (BIST), 08003 Barcelona, Spain. ewa.ksiezopolska@crg.eu.
Abstract:
Fungal infections, such as candidiasis caused by Candida, pose a problem of growing medical concern. In developed countries, the incidence of Candida infections is increasing due to the higher survival of susceptible populations, such as immunocompromised patients or the elderly. Existing treatment options are limited to few antifungal drug families with efficacies that vary depending on the infecting species. In this context, the emergence and spread of resistant Candida isolates are being increasingly reported. Understanding how resistance can evolve within naturally susceptible species is key to developing novel, more effective treatment strategies. However, in contrast to the situation of antibiotic resistance in bacteria, few studies have focused on the evolutionary mechanisms leading to drug resistance in fungal species. In this review, we will survey and discuss current knowledge on the genetic bases of resistance to antifungal drugs in Candida opportunistic pathogens. We will do so from an evolutionary genomics perspective, focusing on the possible evolutionary paths that may lead to the emergence and selection of the resistant phenotype. Finally, we will discuss the potential of future studies enabled by current developments in sequencing technologies, in vitro evolution approaches, and the analysis of serial clinical isolates.
Insights
Drug resistance in Candida fungal infections is a growing concern. This review explores the evolutionary genomics of antifungal resistance in Candida, highlighting genetic factors and future research directions.
Area of Science:
- Medical Mycology
- Evolutionary Biology
- Genomics
Background:
- Fungal infections, particularly candidiasis, are increasing due to a growing population of immunocompromised individuals.
- Current antifungal treatments face challenges from emerging drug-resistant Candida strains.
- Limited research exists on the evolutionary mechanisms driving fungal drug resistance compared to bacterial antibiotic resistance.
Purpose of the Study:
- To review the genetic underpinnings of antifungal drug resistance in Candida opportunistic pathogens.
- To examine the evolutionary pathways leading to the emergence and selection of resistant Candida phenotypes.
- To discuss the future of antifungal resistance research using advanced technologies.
Main Methods:
- Literature review focusing on evolutionary genomics.
- Analysis of genetic bases for drug resistance in Candida species.
- Discussion of in vitro evolution and clinical isolate studies.
Main Results:
- Identifies key genetic factors contributing to antifungal resistance in Candida.
- Elucidates potential evolutionary trajectories for resistance development.
- Highlights the need for further investigation into resistance mechanisms.
Conclusions:
- Understanding the evolution of antifungal resistance is crucial for developing new therapies.
- Genomic approaches offer powerful tools to study resistance evolution in Candida.
- Future research should integrate diverse methodologies to combat rising resistance.
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