PMID- 22539132 OWN - NLM STAT- MEDLINE DCOM- 20120904 LR - 20211021 IS - 1559-0755 (Electronic) IS - 0257-277X (Linking) VI - 52 IP - 3 DP - 2012 Jun TI - Prevention and treatment of allergic inflammation by an Fcgamma-Der f2 fusion protein in a murine model of dust mite-induced asthma. PG - 276-83 LID - 10.1007/s12026-012-8339-x [doi] AB - The immunoglobulin E (IgE) high-affinity receptor FcepsilonRI expressed on mast cells and basophils plays a critical role in triggering allergic disease. The co-aggregation of the FcepsilonRI and FcgammaRIIb receptors is inhibitory to FcepsilonRI signaling and holds great potential for the treatment of IgE-mediated allergies. In China, Dermatophagoides farinae is a common anaphylaxis trigger. Therefore, in this study, the FcgammaRIIb-mediated immunomodulating activity of recombinant Fcgamma-Der f2 fusion protein was tested in a Der f2-allergic murine model. Following the treatment, bronchoalveolar lavage fluid (BALF) was collected to measure the expression of several Th1/Th2-type cytokines (IL-5, TNF-alpha, IL-12p70, IL-4, IL-10, IFN-gamma and IL-18) and histamine, while blood was used to detect the specific IgE and IgG-types anti-Der f2 antibodies, for measurement. In contrast to the saline-treated allergic mice, the levels of Der f2-specific IgE, cytokines and histamine were lowered in the Fcgamma-Der f2-treated allergic mice, in addition to the rare inflammatory cell infiltration in the airways and blood vessels revealed by histopathological examination. The recombinant Fcgamma-Der f2 protein was demonstrated to function as an effective immunotherapeutic agent, suggesting that chimeric human Fcgamma-allergen proteins could be used in the development of antigen-specific immunotherapy for human allergic diseases. FAU - Lin, Li-hui AU - Lin LH AD - Department of Laboratory Medicine, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai, 200080, People's Republic of China. FAU - Zheng, Ping AU - Zheng P FAU - Yuen, John W M AU - Yuen JW FAU - Wang, Juan AU - Wang J FAU - Zhou, Juan AU - Zhou J FAU - Kong, Cun-quan AU - Kong CQ FAU - Peng, Xia AU - Peng X FAU - Li, Jia AU - Li J FAU - Li, Li AU - Li L LA - eng PT - Journal Article PL - United States TA - Immunol Res JT - Immunologic research JID - 8611087 RN - 0 (Antigens, Dermatophagoides) RN - 0 (Arthropod Proteins) RN - 0 (Cytokines) RN - 0 (Dermatophagoides farinae antigen f 2) RN - 0 (Fcgr2b protein, mouse) RN - 0 (Receptors, IgG) RN - 0 (Recombinant Fusion Proteins) SB - IM MH - Animals MH - Antigens, Dermatophagoides/genetics/immunology/*pharmacology MH - Arthropod Proteins/genetics/immunology/*pharmacology MH - Asthma/*drug therapy/immunology/metabolism/pathology MH - China MH - Cytokines/biosynthesis/immunology MH - Dermatophagoides farinae/*immunology MH - Disease Models, Animal MH - Female MH - Gene Expression Regulation/drug effects/immunology MH - Mice MH - Mice, Inbred BALB C MH - *Receptors, IgG MH - Recombinant Fusion Proteins/genetics/immunology/pharmacology MH - Th1 Cells/immunology/metabolism/pathology MH - Th2 Cells/immunology/metabolism/pathology EDAT- 2012/04/28 06:00 MHDA- 2012/09/05 06:00 CRDT- 2012/04/28 06:00 PHST- 2012/04/28 06:00 [entrez] PHST- 2012/04/28 06:00 [pubmed] PHST- 2012/09/05 06:00 [medline] AID - 10.1007/s12026-012-8339-x [doi] PST - ppublish SO - Immunol Res. 2012 Jun;52(3):276-83. doi: 10.1007/s12026-012-8339-x.