Title: Identification of a functional Antigen5-related allergen in the saliva of a blood feeding insect, the tsetse fly
Authors: Caljon, Guy ×
Broos, Katleen
De Goeyse, Ine
De Ridder, Karin
Sternberg, Jeremy M
Coosemans, Marc
De Baetselier, Patrick
Guisez, Yves
Van Den Abbeele, Jan #
Issue Date: May-2009
Publisher: Pergamon Press
Series Title: Insect Biochemistry and Molecular Biology vol:39 issue:5-6 pages:332-341
Abstract: Our previous screening of a Glossma morsitans; morsitans lambda gt11 salivary gland expression library with serum of a tsetse fly exposed rabbit identified a cDNA encoding Tsetse Antigen5 (TAg5, 28.9 kDa), a homologue of Antigen5 sting venom allergens. Recombinant TAg5 was produced in Sf9 cells in order to assess its immunogenic properties in humans. Plasma from a patient that previously exhibited anaphylactic reactions against tsetse fly bites contained circulating anti-TAg5 and anti-saliva IgEs. In a significant proportion of plasma samples of African individuals, TAg5 and saliva binding IgEs (respectively 56 and 65%) can be detected. Saliva, harvested from flies that were subjected to TAg5-specific RNA interference (RNAi), displayed significantly reduced IgE binding potential. Allergenic properties of TAg5 and tsetse fly saliva were further illustrated in immunized mice, using an immediate cutaneous hypersensitivity and passive cutaneous anaphylaxis assay. Collectively, TAg5 was illustrated to be a tsetse fly salivary allergen, demonstrating that Antigen5-related proteins are represented as functional allergens not only in stinging but also in blood feeding insects. (C) 2009 Elsevier Ltd. All rights reserved.
ISSN: 0965-1748
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Chemistry, Campus Kulak Kortrijk
× corresponding author
# (joint) last author

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