Research Project
Grant-in-Aid for Scientific Research (C)
The recruitment of basophils into the sites of allergic inflammation is often observed. However, no definitive evidence has been provided that basophils are crucially involved in the pathogenesis of chronic allergic disorders. Basophils represent less than 1% of peripheral blood leukocytes. and have often been considered as minor and possibly redundant "circulating mast cells". In this study, we have demonstrated that basophils play an important and non-redundant role and are responsible for the development of IgE-mediated chronic allergic inflammation, independently of T cells and mast cells. A single subcutaneous injection of multivalent antigens elicited not only immediate- and late-phase ear swelling but also delayed-onset ear swelling with massive eosinophil infiltration in mice sensitized with antigen-specific IgE and IgE transgenic mice. Mast cells were essential for the immediate- and late-phase ear swelling but dispensable for the delayed one. T cells were also dispensable for the latter. The delayed-onset allergic inflammation was not developed in FcεRI-deficient mice, but it was restored in these mice by transferring FcεRI-expressing basophils from normal mice. These findings indicate a novel mechanism of development of chronic allergic inflammation that is induced by basophils through the-interaction of antigen, IgE, and FcεRI. The present study implies that basophils and their products could be good targets to treat this type of chronic allergic inflammation.
All 2006 2005 2004
All Journal Article (30 results) Book (2 results)
The Journal of Immunology 176
Pages: 7008-7014
The Journal of Allergy and Clinical Immunology 115
Pages: 822-827
The Journal of Experimental Medicine 201
Pages: 333-339
The Journal of Immunology 74
Pages: 4621-4629
International Immunology 17
Pages: 815-825
10019358989
Pages: 857-867
Immunity 23
Pages: 191-202
アレルギー科 20(2)
Pages: 179-185
Time Journal of Immunology 74
Journal of experimental medicine 201
Clinical and Experimental Immunology 135
Pages: 12-18
Immunology 112
Pages: 575-582
Modern Pathology 17
Pages: 423-429
Proceedings of the National Academy of Sciences of the USA 101
Pages: 1016-1021
医薬ジャーナル 40
Pages: 183-187
Animus 34
Pages: 22-25
臨床免疫 41(2)
Pages: 195-199
Clinical and experimental Immunology 135
Immunology 112(4)
Pages: 423-423
Proceedings of the national academy of sciences of the United States of America 101