Genome characterization of Trichophyton mentagrophytes genotype VII strain PG12DES from Italy

Luca Rossi1, Annarita Sorrentino2, Prof Caterina Signoretto1,2

  • 1Department of Diagnostic and Public Health, Microbiology Section, Verona University, Verona, Italy.

Medical Mycology
|June 27, 2025
PubMed

Insights

We sequenced the genome of a clinical Trichophyton mentagrophytes genotype VII strain, identifying key virulence factors. This finding enhances our understanding of this emerging fungal genotype and its spread.

Area of Science:

  • Medical Mycology
  • Genomics
  • Infectious Diseases

Background:

  • Trichophyton mentagrophytes is a significant cause of dermatophytosis.
  • Emergence of specific genotypes, like genotype VII, poses challenges in treatment and control.
  • Understanding the genetic makeup of clinical isolates is crucial for public health.

Purpose of the Study:

  • To perform a comprehensive genome characterization of the clinical Trichophyton mentagrophytes genotype VII strain PG12DES.
  • To identify potential virulence factors within the PG12DES genome.
  • To investigate the phylogenetic relationship of this clinical isolate to other known strains.

Main Methods:

  • Whole-genome sequencing of the PG12DES strain.
  • Bioinformatic analysis to identify genes and virulence factors.
  • Phylogenetic analysis using comparative genomics.

Main Results:

  • The genome of strain PG12DES was successfully characterized.
  • Several virulence factors, including MEP-1, MEP-2, MEP-3, MEP-4, SUB-6, and ZAF-A, were identified.
  • Phylogenetic analysis indicated a clonal relationship with a T. mentagrophytes strain from Moldova (2017).

Conclusions:

  • This study provides the first genome characterization of a clinical Trichophyton mentagrophytes genotype VII strain from Italy.
  • The identified virulence factors offer insights into the pathogenicity of this emerging genotype.
  • The findings contribute to a broader understanding of the epidemiology and evolution of Trichophyton mentagrophytes genotype VII.