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Secreted proteases from pathogenic fungi.

Michel Monod1, Sabrina Capoccia, Barbara Léchenne

  • 1Service de Dermatologie (DHURDV), Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland. Michel.Monod@chuv.hospvd.ch

International Journal of Medical Microbiology : IJMM
|November 28, 2002
PubMed
Summary

Pathogenic fungi secrete various proteases crucial for virulence, aiding in nutrient acquisition and host tissue invasion. Understanding these fungal proteases and their specific targets is key to developing effective antifungal therapies.

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Area of Science:

  • Mycology
  • Biochemistry
  • Infectious Diseases

Background:

  • Human pathogenic fungi secrete diverse proteases, including aspartic, serine, and metalloproteases.
  • These secreted enzymes play roles in fungal nutrition, tissue adherence, invasion, and immune system modulation.
  • While investigated as virulence factors, specific functions and substrate specificities of many fungal proteases remain poorly understood.

Purpose of the Study:

  • To review the types and known functions of proteases secreted by pathogenic fungi.
  • To highlight the importance of understanding protease substrate specificities for elucidating their role in fungal infections.
  • To emphasize the need for research into protease inhibitors for potential therapeutic applications.

Main Methods:

  • Literature review of studies on fungal secreted proteases.

Related Experiment Videos

  • Analysis of protease families (aspartic, serine, metalloproteases) and their known roles.
  • Discussion of specific examples like Candida albicans and Coccidioides immitis.

    • Main Results:

    • Pathogenic fungi secrete a range of proteases, including endoproteases and exopeptidases.
    • Secreted proteases are vital for dermatophytes' nutrient acquisition from keratinous substrates.
    • Candida albicans aspartic proteases contribute to adherence, tissue penetration, and immune evasion.

    Conclusions:

    • Secreted fungal proteases are significant virulence factors with diverse roles in pathogenesis.
    • Further research into protease substrate specificities is essential for understanding fungal virulence mechanisms.
    • Targeting fungal proteases or their inhibitors presents a promising avenue for antifungal drug development.