TY - JOUR
T1 - Optimizing cultivation conditions for the highest expression of fungal allergens
AU - Pfeiffer, Sandra
AU - Focke-Tejkl, Margarete
AU - Sterflinger, Katja
AU - Swoboda, Ines
N1 - Publisher Copyright:
© 2022 The Authors
PY - 2023/4
Y1 - 2023/4
N2 - BACKGROUND: Any reliable allergy diagnosis depends on the quality of the testing material. In the case of fungal allergy, fungal extracts, typically used as test solutions, exhibit considerable differences in their allergenicity. Better knowledge of fungal allergen expression would enable the production of diagnostic fungal extracts of higher quality and, thus, improve the specificity and sensitivity of fungal allergy diagnosis.OBJECTIVE: Our study aimed to find optimal cultivation conditions for the highest expression of fungal allergens.METHODS: Fungal species (Alternaria alternata, Ulocladium chartarum, Aspergillus fumigatus, Cladosporium herbarum, and Paecilomyces variotii) were cultivated under different conditions, and extracts were prepared from fungal material. To detect the expression of the homologous major allergens Alt a 1 and Ulo c 1 and of different fungal enolases, Western blots with allergen-specific antibodies were carried out.RESULTS: Western blots performed with antibodies directed against Alt a 1 and enolases showed that the expression of fungal allergens is highly species-dependent. Even allergens of closely related fungal species and highly conserved, cross-reactive allergens display different expression patterns.CONCLUSION: This study exhibits the impact of different environmental conditions on the expression of the fungal allergens Alt a 1, Ulo c 1, and different fungal enolases. Furthermore, it broadens the knowledge regarding the expression pattern of the major fungal allergens Alt a 1 and Ulo c 1. Information obtained in this study will help to optimize fungal cultivation to produce diagnostic fungal extracts of high quality and, therefore, improve diagnostic specificity and sensitivity.
AB - BACKGROUND: Any reliable allergy diagnosis depends on the quality of the testing material. In the case of fungal allergy, fungal extracts, typically used as test solutions, exhibit considerable differences in their allergenicity. Better knowledge of fungal allergen expression would enable the production of diagnostic fungal extracts of higher quality and, thus, improve the specificity and sensitivity of fungal allergy diagnosis.OBJECTIVE: Our study aimed to find optimal cultivation conditions for the highest expression of fungal allergens.METHODS: Fungal species (Alternaria alternata, Ulocladium chartarum, Aspergillus fumigatus, Cladosporium herbarum, and Paecilomyces variotii) were cultivated under different conditions, and extracts were prepared from fungal material. To detect the expression of the homologous major allergens Alt a 1 and Ulo c 1 and of different fungal enolases, Western blots with allergen-specific antibodies were carried out.RESULTS: Western blots performed with antibodies directed against Alt a 1 and enolases showed that the expression of fungal allergens is highly species-dependent. Even allergens of closely related fungal species and highly conserved, cross-reactive allergens display different expression patterns.CONCLUSION: This study exhibits the impact of different environmental conditions on the expression of the fungal allergens Alt a 1, Ulo c 1, and different fungal enolases. Furthermore, it broadens the knowledge regarding the expression pattern of the major fungal allergens Alt a 1 and Ulo c 1. Information obtained in this study will help to optimize fungal cultivation to produce diagnostic fungal extracts of high quality and, therefore, improve diagnostic specificity and sensitivity.
UR - http://www.scopus.com/inward/record.url?scp=85144437432&partnerID=8YFLogxK
U2 - 10.1016/j.anai.2022.11.017
DO - 10.1016/j.anai.2022.11.017
M3 - Journal article
C2 - 36435304
SN - 1081-1206
VL - 130
SP - 479-484.e3
JO - Annals of Allergy, Asthma and Immunology
JF - Annals of Allergy, Asthma and Immunology
IS - 4
ER -