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Comparative and functional genomics provide insights into the pathogenicity of dermatophytic fungi

Anke Burmester1, Ekaterina Shelest, Gernot Glöckner

  • 1Department of Molecular and Applied Microbiology, Leibniz Institute for Natural Product Research and Infection Biology - Hans Knöll Institute, Beutenbergstrasse 11a, Jena, 07745, Germany.

Genome Biology
|January 21, 2011
PubMed
Abstract

Insights

Genome sequencing of Arthroderma benhamiae and Trichophyton verrucosum reveals key virulence factors in dermatophytes. This research advances understanding of fungal infections and potential therapeutic targets.

Area of Science:

  • Mycology
  • Genomics
  • Pathogen Biology

Background:

  • Dermatophytes cause widespread superficial infections in humans and animals.
  • These fungi exclusively target keratinized host tissues.
  • Arthroderma benhamiae and Trichophyton verrucosum are significant dermatophyte pathogens causing inflammatory infections.

Purpose of the Study:

  • To elucidate the molecular basis of pathogenicity in dermatophytes.
  • To present the first genome sequences of Arthroderma benhamiae and Trichophyton verrucosum.
  • To identify virulence-associated traits through comparative genomics.

Main Methods:

  • Whole-genome sequencing of A. benhamiae and T. verrucosum.
  • Comparative genomic analysis with related fungi (Onygenales, Aspergillus fumigatus).
  • Secretome analysis of A. benhamiae for enzyme secretion.
  • Transcriptome profiling of A. benhamiae interacting with keratinocytes.

Main Results:

  • High collinearity (97%) between A. benhamiae and T. verrucosum genomes.
  • Identification of expanded gene families and unique secondary metabolite gene sets in dermatophytes.
  • Experimental confirmation of protease secretion by A. benhamiae during keratin degradation.
  • Novel insights into A. benhamiae-keratinocyte interactions via transcriptome analysis.
  • Unraveled genetic basis for sexual reproduction in A. benhamiae.

Conclusions:

  • The study illuminates the genetic underpinnings of fundamental and virulence-related traits in dermatophytes.
  • Findings provide a foundation for future research into these medically important fungal pathogens.

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