2020年3月7日
Selective suppression of oral allergen-induced anaphylaxis by Allergin-1 on basophils in mice.
International immunology
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- 巻
- 32
- 号
- 3
- 開始ページ
- 213
- 終了ページ
- 219
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/intimm/dxz075
Mast cells (MCs) play a critical role in oral allergen-induced anaphylaxis. However, the contribution of basophils to the anaphylaxis remains unclear. The inhibitory immunoreceptor Allergin-1 is highly expressed on MCs and basophils and inhibits FcεRI-mediated signaling in MCs. Here, we show that Allergin-1-deficient (Milr1-/-) mice developed more severe hypothermia, a higher mortality rate and a greater incidence of diarrhea than did wild-type (WT) mice in an oral ovalbumin (OVA)-induced food allergy model. MC-deficient Mas-TRECK mice, which had been reconstituted with either WT or Milr1-/- bone marrow-derived cultured MCs, did not develop hypothermia in this food allergy model. On the other hand, depletion of basophils by injection of anti-CD200R3 antibody rescued Milr1-/- mice from lethal hypothermia but not from diarrhea. In vitro analyses demonstrated that Allergin-1 inhibits IgE-dependent activation of both human and mouse basophils. Thus, Allergin-1 on basophils selectively suppresses oral allergen-induced anaphylaxis.
- ID情報
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- DOI : 10.1093/intimm/dxz075
- ISSN : 1460-2377
- PubMed ID : 31793637