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ID 47027
本文ファイル
著者
Fukuda, Ken
Ishida, Waka
Wakasa, Yuhya
Takagi, Hidenori
Takaiwa, Fumio
Fukushima, Atsuki
キーワード
Allergic conjunctivitis
Immunotherapy
Oral tolerance
Pollen
Transgenic rice
NDC
医学
抄録(英)
Background: We have previously shown that prophylactic oral administration of transgenic rice seeds expressing hypoallergenic modified antigens suppressed the development of allergic conjunctivitis induced by Japanese cedar pollen. We have now investigated the efficacy of oral immunotherapy with such transgenic rice for established allergic conjunctivitis in mice.
Methods: BALB/c mice were sensitized with two intraperitoneal injections of Japanese cedar pollen in alum, challenged with pollen in eyedrops, and then fed for 16 days with transgenic rice seeds expressing modified Japanese cedar pollen allergens Cry j 1 and Cry j 2 or with nontransgenic rice seeds as a control. They were then challenged twice with pollen in eyedrops, with clinical signs being evaluated at 15 min after the first challenge and the eyes, blood, spleen, and lymph nodes being isolated at 24 h after the second challenge.
Results: The number of eosinophils in the conjunctiva and the clinical score for conjunctivitis were both significantly lower in mice fed the transgenic rice than in those fed nontransgenic rice. Oral vaccination with transgenic rice seeds also resulted in a significant increase in the production of IFN-g by splenocytes, whereas it had no effect on the number of CD4þCD25þFoxp3þ regulatory T cells in the spleen or submandibular or mesenteric lymph nodes.
Conclusions: Oral administration of transgenic rice seeds expressing hypoallergenic allergens ameliorated allergic conjunctivitis in the established setting. Such a rice-based edible vaccine is potentially both safe and effective for oral immunotherapy in individuals with allergic conjunctivitis.
内容記述
This study was supported by funding from the charitable Trust Fund for Ophthalmic Research in Commemoration of Santen Pharmaceutical's Founder to K.F. as well as by “Agri-Health Translational Research Projects” of the Ministry of Agriculture, Forestry, and Fisheries of Japan to F.T. The funding sources played no role in study design; in collection, analysis, or interpretation of data; or in writing the report.
掲載誌名
Allergology International
67巻
1号
開始ページ
119
終了ページ
123
出版年月日
2018-01
出版者
Japanese Society of Allergology
ISSN
1323-8930
出版者DOI
PubMedID
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright © 2017, Japanese Society of Allergology. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
関連情報URL
部局名
病院