Work

Aspergillus fumigatus allergen I, a major IgE-binding protein, is a member of the mitogillin family of cytotoxins.

Year: 1990

Type: article

Abstract: A major 18-kD IgE-binding protein from Aspergillus fumigatus (Asp fI) has been purified. Partial amino acid sequencing of Asp f I showed extensive sequence homology (95%) between Asp fI and a cytotoxin (mitogillin) produced by A. restrictus. Crossinhibition radioimmunoassay using murine monoclonal antibody and human IgG and IgE antibodies showed that Asp fI and mitogillin were antigenically indistinguishable. Furthermore, both proteins inhibited protein synthesis in vitro by greater than 90%. Asp fI was expressed in A. fumigatus but not in seven other Aspergillus species. The results suggest that Asp fI could play a dual role in the pathogenesis of A. fumigatus-related diseases by promoting colonization through cytotoxic activity and by causing inflammatory reactions involving IgE antibodies.

Source: The Journal of Experimental Medicine

DOI: 10.1084/jem.172.5.1529

Authors: L K Arruda, T A Platts-Mills, J W Fox, M D Chapman

Institution: University of Virginia

Language: English

Topic: Antifungal resistance and susceptibility

Subfield: Infectious Diseases

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: bronze

Funders: National Institutes of Health, National Institute of Allergy and Infectious Diseases