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Published on: March 22, 2024
Mammalian model hosts of cryptococcal infection
Scott F Carroll1, Loïc Guillot, Salman T Qureshi
1Department of Human Genetics, McGill University, Montreal, Canada.
Abstract:
The rising incidence of serious fungal diseases represents a growing threat to human health. Cryptococcus neoformans, an encapsulated yeast saprophyte with global distribution, has been recognized as an important emerging pathogen. Humans frequently develop asymptomatic or mild infection with C. neoformans, but individuals with impaired host defense systems may develop severe pneumonia and potentially fatal meningoencephalitis. Insight into the biology and virulence of C. neoformans is advancing rapidly and will be propelled even further by the recently completed and published genome sequences for two related strains of C. neoformans serotype D. Several mammalian model hosts including the guinea pig, rabbit, rat, and mouse have been developed for the study of cryptococcosis. The combination of microbial genomics with well-characterized model hosts that are amenable to immunologic and genetic manipulation represents a powerful resource for comprehensive study of cryptococcal disease pathogenesis as well as vaccine and antifungal drug therapy. This review provides an introduction to each mammalian model host and briefly highlights the advantages, limitations, and potential of each system for future research involving cryptococci.
Insights
Serious fungal infections are increasing. This review explores mammalian models for studying Cryptococcus neoformans, an emerging fungal pathogen, aiding research into cryptococcosis and new treatments.
Area of Science:
- Mycology
- Infectious Diseases
- Immunology
Background:
- Serious fungal diseases, including those caused by Cryptococcus neoformans, pose a growing global health threat.
- Cryptococcus neoformans is an emerging pathogen that can cause severe pneumonia and meningoencephalitis, particularly in immunocompromised individuals.
- Recent advances in genomics are enhancing our understanding of C. neoformans biology and virulence.
Purpose of the Study:
- To review and introduce various mammalian model hosts used for studying cryptococcosis.
- To highlight the advantages, limitations, and potential of each model system for future research.
- To emphasize the synergy between microbial genomics and well-characterized model hosts for advancing cryptococcal disease research.
Main Methods:
- Review of existing literature on mammalian models for cryptococcosis research.
- Analysis of the suitability of guinea pig, rabbit, rat, and mouse models.
- Consideration of models amenable to immunologic and genetic manipulation.
Main Results:
- Several mammalian models (guinea pig, rabbit, rat, mouse) are established for studying cryptococcosis.
- Each model possesses unique advantages and limitations regarding disease manifestation and experimental manipulation.
- Genomic data combined with model host studies offers a powerful approach to understanding pathogenesis.
Conclusions:
- Mammalian models are crucial for advancing the study of Cryptococcus neoformans pathogenesis.
- The selection of an appropriate model host is critical for effective research into cryptococcosis.
- Future research integrating genomics and advanced model systems will accelerate the development of vaccines and antifungal therapies.
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