Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9236574 | Clinical Immunology | 2005 | 14 Pages |
Abstract
Several million individuals are exposed to agents in the workplace associated with atopy and asthma. Detergent enzymes have been implicated in occupationally induced hypersensitivity. However, the genetic susceptibility and T cell responses to detergent enzymes are undefined. We generated and used HLA-DQ6, -DQ8, -DR2, -DR3, and -DR4 transgenic mice to examine the immune and inflammatory components involved in the response to the detergent enzyme subtilisin BPNâ². Based on in vitro and in vivo studies, for the first time, we present evidence that DQ8 is a strong susceptibility marker for BPNâ²-induced hypersensitivity. Only DQ8 mice showed consistent T cell responses to five immunodominant regions of BPNâ² comprising peptides #14 to 16, 36-37, 42-43, 62-63, and 80-81. The DQ8 mice also developed allergic eosinophilic inflammatory reactions in the airways following intranasal instillations of this enzyme. The DQ8 mice also responded to BPNâ² with a significant IgG1 and IgE production. We propose that the HLA Class II tg mice are useful for understanding allergenic responses to enzymes in humans, screening of allergenic and immunogenic properties of detergent enzymes, and for the development of modified enzymes to maintain efficient detergent qualities without allergic properties.
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Authors
Ailing Xue, Svetlana P. Chapoval, Elizabeth S. Finn, Vaidehi R. Chowdhary, Eric V. Marietta, Thomas A. Gaffey, Alex C. Pursifull, Chella S. David,