Novel Cytosolic Allergens of Aspergillus fumigatus Identified from Germinating Conidia
2010 | journal article. A publication with affiliation to the University of Göttingen.
Jump to: Cite & Linked | Documents & Media | Details | Version history
Cite this publication
Novel Cytosolic Allergens of Aspergillus fumigatus Identified from Germinating Conidia
Singh, B.; Sharma, G. L.; Oellerich, M.; Kumar, R.; Singh, S.; Bhadoria, D. P. & Katyal, A. et al. (2010)
Journal of Proteome Research, 9(11) pp. 5530-5541. DOI: https://doi.org/10.1021/pr100605c
Documents & Media
Details
- Authors
- Singh, Bharat; Sharma, Gainda L.; Oellerich, Michael; Kumar, Ram; Singh, Seema; Bhadoria, Dharam P.; Katyal, Anju; Reichard, Utz ; Asif, Abdul R.
- Abstract
- Aspergillus fumigatus is the common cause of allergic broncho-pulmonary aspergillosis (ABPA) and most of the allergens have been described from its secreted fraction. In the present investigation, germinating conidial cytosolic proteins of A. fumigatus were extracted from a 16 h culture. The proteome from this fraction was developed, and immuno-blots were generated using pooled ABPA patients' sera. Well separated Immunoglobulin-E (IgE) and Immunoglobulin-G (IgG) reactive spots were picked from corresponding 2DE gels and subjected to mass spectrometric analysis. As a result, 66 immuno-reactive proteins were identified from two geographically different strains (190/96 and DAYA) of A. fumigatus. Only 3 out of 66 proteins reacted with IgG, and the remaining 63 proteins were found to be IgE reactive. These 63 IgE-reactive cytosolic proteins from germinating conidia included 2 already known (Asp f12 and Asp f22) and 4 predicted allergens (Hsp88, Hsp70, malate dehydrogenase, and alcohol dehydrogenase) based on their homology with other known fungal allergens. In view of this, the panel of presently identified IgE-reactive novel proteins holds the potential of providing a basis for the wider diagnostic application in assay for allergic aspergillosis. We could demonstrate that recombinantly expressed proteins from this panel showed consistent reactivity with IgE of individual sera of ABPA patients. The recombinantly expressed proteins may also be useful in desensitization therapy of allergic disorders including ABPA.
- Issue Date
- 2010
- Status
- published
- Publisher
- Amer Chemical Soc
- Journal
- Journal of Proteome Research
- ISSN
- 1535-3893