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Updated: May 8, 2026
Small-Scale Plasma Membrane Preparation for the Analysis of Candida albicans Cdr1-mGFPHis
Published on: June 13, 2021
Differentially-expressed genes in Candida albicans exposed to ε-poly-L-lysine
Ruo-Song Ye1, Zhi-Hong Zhang, Heng-Yi Xu
1State Key Laboratory of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang, 330047, Jiangxi, People's Republic of China, yeruosong@163.com.
Abstract:
Candida albicans is an opportunistic human pathogen whose disinfection is a challenge. ε-Poly-L-lysine (ε-PL), an antagonistic agent, can disrupt cell membranes and inhibit the growth of C. albicans. Genes that were differentially-expressed in response to ε-PL were isolated from C. albicans and identified by suppression subtractive hybridization. Ten subtracted clones, that share >98 % homology with known genes of C. albicans, were isolated. Among these, four genes encoded cell wall-associated proteins. Real-time quantitative PCR and northern blot hybridization suggest that these genes are involved in the response to ε-PL. These findings will help to determine the mechanism of the antimicrobial activity of ε-PL against C. albicans.
Insights
ε-Poly-L-lysine (ε-PL) disrupts Candida albicans cell membranes, inhibiting growth. Researchers identified four key cell wall genes in C. albicans that respond to ε-PL, revealing its antimicrobial mechanism.
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Candida albicans is an opportunistic pathogen causing infections.
- Disinfection of C. albicans presents significant challenges in healthcare settings.
- ε-Poly-L-lysine (ε-PL) exhibits antimicrobial properties against C. albicans by disrupting cell membranes.
Purpose of the Study:
- To identify genes in C. albicans that are differentially expressed in response to ε-PL treatment.
- To elucidate the molecular mechanisms underlying the antimicrobial activity of ε-PL against C. albicans.
Main Methods:
- Suppression subtractive hybridization was employed to isolate differentially expressed genes.
- Real-time quantitative PCR and northern blot hybridization were used to validate gene expression.
- Gene homology searches were performed to identify known C. albicans genes.
Main Results:
- Ten subtracted clones with >98% homology to known C. albicans genes were isolated.
- Four of these identified genes encode cell wall-associated proteins.
- Expression analysis confirmed these four genes are involved in the response to ε-PL.
Conclusions:
- ε-Poly-L-lysine's antimicrobial action against C. albicans involves the regulation of specific cell wall-associated genes.
- Understanding these gene responses provides insight into ε-PL's mechanism of action.
- This research contributes to developing novel strategies for combating C. albicans infections.
