TY - JOUR
T1 - Distinct galactofuranose antigens in the cell wall and culture supernatants as a means to differentiate Fusarium from AspergillusspeciesAnnegret
AU - Wiedemann, Annegret
AU - Kakoschke, Tamara Katharina
AU - Speth, Cornelia
AU - Rambach, Günter
AU - Ensinger, Christian
AU - Jensen, Henrik Elvang
AU - Ebel, Frank
PY - 2016/9/1
Y1 - 2016/9/1
N2 - 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.
AB - 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.
U2 - 10.1016/j.ijmm.2016.05.002
DO - 10.1016/j.ijmm.2016.05.002
M3 - Journal article
C2 - 27237422
SN - 1438-4221
VL - 306
SP - 381
EP - 390
JO - International Journal of Medical Microbiology
JF - International Journal of Medical Microbiology
ER -