Phospholipase Activity and Virulence Factors in Candida Species

The genus Candida comprises opportunistic yeasts that cause mucosal and invasive infections worldwide. Central to their pathogenicity is the secretion of hydrolytic enzymes, notably phospholipases, which degrade host membrane phospholipids and facilitate tissue invasion. Alongside phospholipases, Candida species deploy proteases, lipases and hemolysins to breach epithelial barriers, acquire nutrients and resist host immunity. Morphological plasticity, including yeast-to-hypha transition, underpins tissue penetration and biofilm development on medical devices. Biofilms further enhance antifungal tolerance and persistence. Species-specific differences are apparent: Candida albicans often exhibits the highest phospholipase activity and true hyphal formation, while non-albicans Candida may rely more on biofilm formation, cell surface hydrophobicity or alternative enzyme repertoires. Virulence expression is modulated by environmental cues such as pH and surface contact, and is increasingly linked to antifungal resistance mechanisms. Understanding the interplay between enzymatic virulence, morphological switching and biofilm architecture is key to devising new diagnostics and antivirulence therapies with global relevance for managing candidiasis.

Research from Nature Portfolio

Investigations into natural compounds have revealed new antivirulence strategies against Candida. One study evaluated the multipotent effects of Rottlerin, demonstrating in vitro inhibition of biofilm formation and significant reductions in hydrolytic enzyme activity, including hemolysin and phospholipase, across Candida species. Scanning electron microscopy confirmed blockade of hyphal development in Candida albicans. In vivo assays using Caenorhabditis elegans models showed that Rottlerin enhanced host survival without overt toxicity, highlighting its potential as an antivirulence lead that disarms Candida pathogenicity rather than relying solely on fungicidal action.

Phospholipase Activity and Virulence Factors in Candida Species publication trend

The graph below shows the total number of articles in phospholipase activity and virulence factors in candida species across all publications each year (not limited to Nature Index journals).

Technical terms

Phospholipase: Extracellular enzyme that hydrolyses host membrane phospholipids, aiding tissue invasion.

Biofilm: Structured community of microbial cells within an extracellular matrix, promoting antifungal tolerance and persistence.

Hyphae: Filamentous growth form of Candida that penetrates host tissues and supports biofilm architecture.

Aspartyl protease: Hydrolytic enzyme that degrades host proteins, facilitating nutrient acquisition and immune evasion.

Hemolysin: Cytolytic factor that lyses red blood cells to liberate iron, enhancing fungal virulence.

Adhesin: Cell-surface protein that mediates attachment to host tissues and initiates biofilm formation.

References

1. Exploring the antifungal, antibiofilm and antienzymatic potential of Rottlerin in an in vitro and in vivo approach. Scientific Reports (2024).
2. Characterization of Virulence Factors in Candida Species Causing Candidemia in a Tertiary Care Hospital in Bangkok, Thailand. Journal of Fungi (2023).
3. Characterization of Candida species isolated from clinical specimens: insights into virulence traits, antifungal resistance and molecular profiles. BMC Microbiology (2024).