Two Infection Assays to Study Non-Lethal Virulence Phenotypes in C. Albicans using C. Elegans

Area of Science:

• Microbiology
• Infectious Diseases
• Model Organisms

Background:

• Candida albicans is an opportunistic fungal pathogen causing severe nosocomial infections and less lethal conditions like vulvovaginal and oropharyngeal candidiasis.
• Traditional murine models for studying C. albicans pathogenesis are costly, time-consuming, and limited in replication.
• Mini-model systems like Caenorhabditis elegans offer efficient alternatives for studying fungal infections.

Purpose of the Study:

• To describe two novel assays using C. elegans to study Candida albicans infection.
• To provide simple, cost-effective methods for assessing C. albicans virulence.
• To facilitate rapid screening of C. albicans mutant libraries and genetic backgrounds.

Main Methods:

• Development of a fecundity assay to measure host reproduction and individual host survival during C. albicans infection.
• Implementation of a lineage expansion assay to evaluate the impact of C. albicans infection on host population growth across generations.
• Utilizing C. elegans as a mini-model system for infection studies.

Main Results:

• The described assays provide a straightforward and economical approach to investigate C. albicans virulence.
• These methods allow for the assessment of both individual host health and population-level effects of infection.
• The assays are suitable for high-throughput screening of C. albicans virulence factors.

Conclusions:

• C. elegans serves as a valuable mini-model for studying C. albicans pathogenesis.
• The fecundity and lineage expansion assays offer efficient tools for virulence assessment.
• These assays contribute to a better understanding of host-pathogen interactions in fungal infections.