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Updated: Nov 21, 2025
Quantifying the Antifungal Activity of Peptides Against Candida albicans
Published on: January 13, 2023
Antifungal activity of MAF-1A peptide against Candida albicans
Rong Cheng1,2, Qiang Xu1,2, Fangfang Hu3
1Department of Central Lab, Guizhou Provincial People's Hospital, Guiyang, 550002, China.
Abstract:
Invasive candidiasis is a major threat to human health, and Candida albicans is the most common pathogenic species responsible for this condition. The incidence of drug-resistant strains of C. albicans is rising, necessitating the development of new antifungal drugs. Antimicrobial peptides (AMPs) have recently attracted attention due to their unique ability to evade the drug resistance of microorganisms. However, the mechanism of their activity has not yet been identified. The current study analyzed the mode of action of MAF-1A by confocal microscopy, scanning electron microscopy, fluorescent staining, flow cytometry, and qRT-PCR. The results indicate that MAF-1A disrupts the cell membrane of C. albicans and enters the cell where it binds and interacts with nucleic acids. qRT-PCR demonstrated that the expression of several sterol biosynthesis-related genes in C. albicans was increased after MAF-1A treatment. Together, these findings suggest that MAF-1A exerts antifungal action by affecting both the cell membrane and intracellular components. The antifungal mechanism of MAF-1A is unique, and its identification has great research and clinical significance.
Insights
Antifungal peptide MAF-1A combats drug-resistant Candida albicans by disrupting its cell membrane and interacting with nucleic acids. This novel mechanism offers a promising new strategy against invasive fungal infections.
Area of Science:
- Microbiology
- Biochemistry
- Molecular Biology
Background:
- Invasive candidiasis, often caused by Candida albicans, poses a significant global health risk.
- Rising drug resistance in Candida albicans necessitates novel antifungal therapies.
- Antimicrobial peptides (AMPs) show promise due to their unique mechanisms against resistant microbes.
Purpose of the Study:
- To elucidate the antifungal mechanism of the antimicrobial peptide MAF-1A against Candida albicans.
- To investigate how MAF-1A interacts with Candida albicans at the cellular and molecular level.
Main Methods:
- Confocal and scanning electron microscopy to visualize cellular effects.
- Fluorescent staining and flow cytometry for cell viability and internal interactions.
- Quantitative reverse transcription PCR (qRT-PCR) to analyze gene expression.
Main Results:
- MAF-1A effectively disrupts the cell membrane of Candida albicans, leading to cell entry.
- Intracellularly, MAF-1A binds to and interacts with nucleic acids.
- Treatment with MAF-1A upregulated the expression of sterol biosynthesis-related genes in Candida albicans.
Conclusions:
- MAF-1A exhibits a unique dual antifungal action, targeting both the cell membrane and intracellular components.
- The findings highlight MAF-1A as a potential therapeutic agent with a novel mechanism of action against invasive candidiasis.
- Understanding MAF-1A's mechanism is crucial for developing new treatments for drug-resistant fungal infections.
