Distinct galactofuranose antigens in the cell wall and culture supernatants as a means to differentiate Fusarium from AspergillusspeciesAnnegret

Annegret Wiedemann, Tamara Katharina Kakoschke, Cornelia Speth, Günter Rambach, Christian Ensinger, Henrik Elvang Jensen, Frank Ebel

    7 Citationer (Scopus)

    Abstract

    Detection of carbohydrate antigens is an important means for diagnosis of invasive fungal infections. For diagnosis of systemic Aspergillus infections, galactomannan is commonly used, the core antigenic structure of which consists of chains of several galactofuranose moieties. In this study, we provide evidence that Fusarium produces at least two distinct galactofuranose antigens: Smaller amounts of galactomannan and larger quantities of a novel antigen recognized by the monoclonal antibody AB135-8. In A. fumigatus, only minor amounts of the AB135-8 antigen are found in supernatants and in the apical regions of hyphae. A galactofuranose-deficient A. fumigatus mutant lacks the AB135-8 antigen, which strongly suggests that galactofuranose is an essential constituent of this antigen. Using a combination of AB135-8 and a galactomannan-specific antibody, we were able to unambiguously differentiate A. fumigatus and Fusarium hyphae in immunohistology. Moreover, since Fusarium releases the AB135-8 antigen, it appears to be a promising target antigen for a serological detection of Fusarium infections.

    OriginalsprogEngelsk
    TidsskriftInternational Journal of Medical Microbiology
    Vol/bind306
    Sider (fra-til)381-390
    ISSN1438-4221
    DOI
    StatusUdgivet - 1 sep. 2016

    Fingeraftryk

    Dyk ned i forskningsemnerne om 'Distinct galactofuranose antigens in the cell wall and culture supernatants as a means to differentiate Fusarium from AspergillusspeciesAnnegret'. Sammen danner de et unikt fingeraftryk.

    Citationsformater