Abstract:
:Animal allergens are an important cause of asthma and allergic rhinitis. We designed and tested a chimeric human-cat fusion protein composed of a truncated human IgG Fcgamma1 and the major cat allergen Fel d1, as a proof of concept for a new approach to allergy immunotherapy. This Fcgamma-Fel d1 protein induced dose-dependent inhibition of Fel d1-driven IgE-mediated histamine release from cat-allergic donors' basophils and sensitized human cord blood-derived mast cells. Such inhibition was associated with altered Syk and ERK signaling. The Fcgamma-Fel d1 protein also blocked in vivo reactivity in FcepsilonRIalpha transgenic mice passively sensitized with human IgE antibody to cat and in Balb/c mice actively sensitized against Fel d1. The Fcgamma-Fel d1 protein alone did not induce mediator release. Chimeric human Fcgamma-allergen fusion proteins may provide a new therapeutic platform for the immune-based therapy of allergic disease.
journal_name
Nat Medjournal_title
Nature medicineauthors
Zhu D,Kepley CL,Zhang K,Terada T,Yamada T,Saxon Adoi
10.1038/nm1219keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
446-9issue
4eissn
1078-8956issn
1546-170Xpii
nm1219journal_volume
11pub_type
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