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Quantifying the Antifungal Activity of Peptides Against Candida albicans
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Quantifying the Antifungal Activity of Peptides Against Candida albicans

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Antimicrobial Peptide AMP-17 Affects Candida albicans by Disrupting Its Cell Wall and Cell Membrane Integrity

Huiling Ma1,2, Xinyu Zhao1, Longbing Yang1

  • 1Key and Characteristic Laboratory of Modern Pathogen Biology, School of Basic Medical Sciences, Guizhou Medical University, Guiyang 550025, People's Republic of China.

Infection and Drug Resistance
|August 18, 2020
PubMed
Abstract

Insights

AMP-17, an antimicrobial peptide, disrupts Candida albicans cell walls and membranes, offering a potential new treatment for infections. This peptide shows promise in combating drug-resistant fungal infections.

Area of Science:

  • Mycology
  • Antimicrobial Peptides
  • Biochemistry

Background:

  • Candida albicans poses a significant mortality risk to immunocompromised individuals.
  • Antifungal drug resistance and toxicity necessitate novel therapeutic agents.
  • AMP-17, a peptide from Musca domestica, demonstrates potent antifungal activity against Candida species.

Purpose of the Study:

  • To investigate the mechanism of AMP-17 against Candida albicans.
  • To analyze AMP-17's effects on the external cell structure of C. albicans.
  • To evaluate AMP-17 as a potential antifungal agent.

Main Methods:

  • Recombinant AMP-17 was produced and its antifungal activity assessed via microdilution.
  • Microscopy, including scanning electron microscopy, was used to observe morphological changes.
  • Cell wall integrity, membrane permeability, and gene expression related to cell wall and membrane synthesis were analyzed.

Main Results:

  • AMP-17 significantly inhibited C. albicans growth, causing cell aggregation and morphological irregularities.
  • AMP-17 treatment reduced cell wall integrity to 21.7% and disrupted cell membrane permeability.
  • Gene expression analysis revealed upregulation of FKS2 and downregulation of ERG1, ERG5, ERG6, and MET6.

Conclusions:

  • AMP-17 effectively disrupts the cell wall integrity and membrane structure of Candida albicans.
  • AMP-17 represents a promising novel therapeutic option for managing C. albicans infections.
  • Further research into AMP-17's mechanism and efficacy is warranted.
Keywords:
AMP-17C. albicanscell wallmembrane dynamics and permeability

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