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5-Azacytidine accelerates yeast-mycelium conversion in Candida albicans
S Pancaldi1, L Del Senno, M P Fasulo
1Institute of Botany, University of Ferrara, Italy.
Cell Biology International Reports
|January 1, 1988
Summary
The DNA demethylating agent 5-azacytidine (5-azaC) accelerates Candida albicans morphogenetic changes, including germ tube formation and yeast-to-mycelium conversion. This suggests DNA demethylation modulates gene activity during fungal development.
Area of Science:
- Mycology
- Molecular Biology
- Epigenetics
Background:
- Candida albicans exhibits dimorphism, switching between yeast and hyphal forms.
- Morphological changes are crucial for C. albicans virulence and infection.
- Epigenetic modifications, like DNA methylation, can influence gene expression and development.
Purpose of the Study:
- To investigate the effect of the DNA demethylating agent 5-azacytidine (5-azaC) on Candida albicans blastospore morphology.
- To determine if 5-azaC influences the yeast-to-hyphae transition in C. albicans.
Main Methods:
- Microscopic observation of Candida albicans blastospores.
- Treatment with 5-azacytidine (5-azaC) under induced and non-induced conditions for mycelial form.
- Comparison of morphological development in treated versus untreated cells.
Main Results:
- 5-azaC had no effect on non-induced C. albicans cells.
- 5-azaC significantly accelerated germ tube formation in induced cells.
- Yeast-mycelium conversion was synchronous and faster in 5-azaC treated cells compared to asynchronous and slow development in normal cells.
Conclusions:
- DNA demethylation by 5-azaC modulates gene activity during Candida albicans morphogenetic changes.
- 5-azaC promotes and synchronizes the yeast-to-hyphae transition in C. albicans.
- These findings highlight the role of epigenetics in fungal development and phenotypic plasticity.