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Quantifying the Antifungal Activity of Peptides Against Candida albicans
Published on: January 13, 2023
Lipopeptide: Exploration for enhanced anticandidal therapeutic spectrum
Vivek Kumar Singh1, Awanish Kumar1
1Department of Biotechnology, National Institute of Technology, Raipur, CG, India.
Abstract:
Growing numbers of human fungal contagions pose a significant threat to the health of society, which is largely brought on by an increase in the number of immunocompromised patients. Pathogenic fungi are usually ignored in discussions of human disease, though they create a big problem after infection. Immunocompromised patients have a high fatality rate due to severe invasive infections from a common polymorphic pathogenic fungus, Candida albicans. Treatment becomes more challenging when C. albicans builds biofilms in the body and on medical implants because they protect themselves from the human defense system and resist traditional antifungal medications. Quorum sensing in biofilm helps to develop drug resistance because it regulates gene expression and other biofilm-related activities. Available antifungal drugs now are not very effective against biofilm and are becoming more resistant. New antifungal choices are desperately needed, and they should contain unique biocompatible modes of action. Lipopeptides, a naturally occurring peptide group, have been shown as a promising antifungal substitute. They could be an effective, futuristic antifungal agent that stops the growth of pathogenic fungi in humans. Lipopeptides produced by bacteria, especially from Bacillus and Pseudomonas, are very powerful against pathogenic fungi. Cyclic lipopeptides such as surfactin, fengycin, iturins, and daptomycin damage Candida species' cell membranes because they are hydrophobic, prevent biofilm development, and could be efficacious antifungal agents. This review explores structural diversity, biosynthesis, and interactions of lipopeptides against C. albicans virulence factors. New treatment regimens for human fungal infections can be developed by recognizing and researching lipopeptides in-depth, urgently needed to develop potent, safe, and enhanced spectral antifungal arsenals in the future because there is now an insufficiency of effective antifungal medicine.
Insights
Lipopeptides show promise as novel antifungal agents against Candida albicans biofilms. These natural compounds offer a new strategy to combat drug-resistant fungal infections in immunocompromised patients.
Area of Science:
- Microbiology
- Biochemistry
- Pharmacology
Background:
- Human fungal infections, particularly from Candida albicans, are a growing threat, especially for immunocompromised individuals.
- Candida albicans forms biofilms on medical devices and within the body, conferring resistance to conventional antifungal drugs.
- Current antifungal treatments are increasingly ineffective against biofilms and exhibit rising resistance, necessitating novel therapeutic approaches.
Purpose of the Study:
- To review the structural diversity, biosynthesis, and antifungal mechanisms of lipopeptides against Candida albicans.
- To explore the potential of lipopeptides as a new class of antifungal agents to overcome drug resistance.
- To highlight the need for further research into lipopeptides for developing new treatments for invasive fungal infections.
Main Methods:
- Literature review focusing on lipopeptide structures, biosynthesis pathways, and antifungal activities.
- Analysis of studies investigating lipopeptide interactions with Candida albicans virulence factors, including biofilm formation.
- Examination of bacterial lipopeptides, such as surfactin, fengycin, iturins, and daptomycin, for their efficacy against Candida species.
Main Results:
- Lipopeptides, particularly cyclic variants from Bacillus and Pseudomonas, exhibit potent antifungal activity against Candida species.
- These lipopeptides disrupt Candida cell membranes due to their hydrophobic nature and inhibit biofilm development.
- Several lipopeptides demonstrate efficacy against virulence factors associated with Candida albicans infections.
Conclusions:
- Lipopeptides represent a promising alternative to existing antifungal drugs, with potential for treating drug-resistant fungal infections.
- Further in-depth research into lipopeptides is crucial for developing novel, safe, and broad-spectrum antifungal therapies.
- Targeting lipopeptide mechanisms could lead to new treatment strategies for invasive Candida infections, addressing the current gap in effective antifungal arsenals.
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