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Biolistic Transformation of a Fluorescent Tagged Gene into the Opportunistic Fungal Pathogen Cryptococcus neoformans
Published on: March 19, 2015
Phenotypic switching of Cryptococcus neoformans and Cryptococcus gattii.
1Department of Medicine, Albert Einstein College of Medicine, 1300 Morris Park Avenue, UL 1223, Bronx, NY, USA. njain@aecom.yu.edu
Mycopathologia
|June 24, 2008
Summary
Cryptococcus neoformans and Cryptococcus gattii adapt to hosts via phenotype switching, altering their capsule and virulence. This adaptation impacts host inflammatory responses and antifungal treatment efficacy.
Area of Science:
- Medical Mycology
- Microbial Pathogenesis
- Host-Pathogen Interactions
Background:
- Fungal pathogens like Cryptococcus neoformans and Cryptococcus gattii thrive in host environments.
- Adaptation in clonal populations often involves generating diversity.
- Phenotypic switching is a key mechanism for rapid adaptation in fungi.
Purpose of the Study:
- To review and compare phenotypic switching in Cryptococcus neoformans and Cryptococcus gattii.
- To highlight similarities and differences in their adaptation strategies.
- To discuss the impact of phenotypic switching on virulence and disease persistence.
Main Methods:
- Comparative analysis of phenotypic switching mechanisms in C. neoformans and C. gattii.
- Review of studies on capsule changes and virulence alterations.
- Examination of host inflammatory responses to different switch variants.
- Analysis of the effects on antifungal therapy outcomes.
Main Results:
- Both C. neoformans and C. gattii exhibit phenotypic switching, altering their polysaccharide capsule.
- Phenotypic switching significantly impacts fungal virulence and infection outcomes in animal models.
- Switch variants elicit distinct host inflammatory responses, influencing disease progression.
- Altered host responses can affect antifungal treatment effectiveness and potentially select for switch variants.
Conclusions:
- Phenotypic switching is a critical adaptation strategy for C. neoformans and C. gattii.
- Understanding the similarities and differences in their switching mechanisms is crucial for treating cryptococcosis.
- Phenotypic switching influences disease persistence, host immunity, and therapeutic responses.
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