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Updated: Jul 6, 2026

An Ex vivo Assay to Study Candida albicans Hyphal Morphogenesis in the Gastrointestinal Tract
Published on: July 1, 2020
Role of CaECM25 in cell morphogenesis, cell growth and virulence in Candida albicans
TingTing Zhang1, WanJie Li, Di Li
1Key laboratory of Cell Proliferation and Regulation of Ministry of Education, Beijing 100875, China.
Abstract:
Candida albicans is the most prominent opportunistic fungal pathogen in humans. Multiple factors are associated with the virulence of C. albicans, including morphogenesis, cell wall organization and growth rate. Here, we describe the identification and functional characterization of CaECM25, a gene that has not been reported before. We constructed Caecm25Delta/Delta mutants and investigated the role of the gene in morphogenesis, cell wall organization and virulence. CaECM25 deletion resulted in defects in cell separation, a slower growth rate, reduced filamentous growth and attenuated adherence to plastic surfaces. The Caecm25Delta/Delta mutant was also significantly less virulent than wild type when tested for systemic infection in mice. Therefore, CaECM25 plays important roles in morphogenesis, cell wall organization and virulence.
Insights
A newly identified gene, CaECM25, is crucial for Candida albicans virulence. Deleting this gene impairs fungal growth, cell separation, and infection in mice.
Area of Science:
- Mycology
- Molecular Biology
- Pathogenesis
Background:
- Candida albicans is a major opportunistic fungal pathogen.
- Virulence is linked to morphogenesis, cell wall, and growth rate.
Purpose of the Study:
- Identify and characterize the novel gene CaECM25.
- Investigate its role in C. albicans morphogenesis, cell wall, and virulence.
Main Methods:
- Gene deletion (Caecm25Δ/Δ mutants).
- Phenotypic analysis (morphogenesis, cell separation, growth rate, adherence).
- Virulence testing in a mouse model of systemic infection.
Main Results:
- CaECM25 deletion caused defects in cell separation and reduced growth rate.
- Mutants showed decreased filamentous growth and adherence.
- Caecm25Δ/Δ mutants exhibited significantly reduced virulence in mice.
Conclusions:
- CaECM25 is essential for C. albicans morphogenesis.
- CaECM25 plays a role in cell wall organization.
- CaECM25 contributes to C. albicans virulence.
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