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Gliotoxin in Aspergillus fumigatus: an example that mycotoxins are potential virulence factors

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Abstract

Moulds produce several different mycotoxins that may improve their chance of survival in particular environments. For example, Aspergillus fumigatus, an important human pathogen, produces several mycotoxins including gliotoxin. This secondary metabolite, a small lipid soluble dipeptide, exerts toxic effects on phagocytic cells and T-lymphocytes at low concentrations in vitro. A. fumigatus also produces high levels of gliotoxin in vivo, and this suggests that host defense mechanisms might be impaired by this metabolite during host infection. In the past few years, the genes responsible for the production of gliotoxin in A. fumigatus have been identified and more recently gliotoxin-minus mutants have been used in animal experiments to ascertain the biological role of this product. Mycotoxins have also been shown to act as virulence factors in some fungal infections of insects and plants.

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  1. Institute of Medical Microbiology and Hygiene, University Clinic Mannheim, University of Heidelberg, Theodor, Kutzer Ufer, 68167, Mannheim, Germany

    Herbert Hof & Claudio Kupfahl

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Hof, H., Kupfahl, C. Gliotoxin in Aspergillus fumigatus: an example that mycotoxins are potential virulence factors. Mycotox Res 25, 123–131 (2009). https://doi.org/10.1007/s12550-009-0020-4

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