論文

査読有り 国際誌
2019年10月6日

Clinical trials of Cry j 1 and Cry j 2 T-cell epitope peptide-expressing rice in patients with Japanese cedar pollinosis.

Asian Pacific journal of allergy and immunology
  • YumShoji Hashimotoi
  • Masatoshi Kawata
  • Nobusuke Mino
  • Satoshi Ogino
  • Noriaki Takeda
  • Kayoko Kawashima
  • Hidenori Takagi
  • Yuhya Wakasa
  • Makoto Takano
  • Masaki Tanaka
  • Yuji Tohda
  • Toshio Tanaka
  • 全て表示

記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.12932/AP-050619-0575

BACKGROUND: In allergic models, administration of rice that expresses a hybrid peptide consisting of 7 major T cell epitopes of Cry j 1 and Cry j 2 (7Crp), suppressed allergic symptoms, IgE elevation and specific T cell response to Japanese cedar pollen. OBJECTIVE: To evaluate the efficacy and safety of 7Crp-expressing rice in patients with Japanese cedar pollinosis METHODS: A 24-week randomized, double-blind, placebo-controlled study was performed to see the efficacy of 7Crp on allergic symptoms using scoring systems, in which 45 patients were assigned to take either 5 g, 20 g test rice, or placebo daily. A 96-week open study was also conducted to determine its inhibitory effect on serum IgE and T cell proliferative response for Japanese cedar pollen, in which 10 patients consumed 5 g test rice daily. RESULTS: No adverse events associated with the test rice occurred, and the intake rate was more than 96%. The test rice did not show suppression of symptoms related to Japanese cedar pollinosis within 24 weeks. However, intake of 5 g test rice led to a significant decrease in T cell response to Japanese cedar pollen during and after the second disperse season in a 96-week open trial, whereas the specific IgE titer remained unchanged. CONCLUSION: Tolerability and safety of 7Crp-expressing rice was accepted. Daily intake of up to 20 g transgenic rice did not provide beneficial effects on Japanese cedar pollinosis within 24 weeks, however, continuous intake of 5 g rice might reduce allergen specific T cell response.

リンク情報
DOI
https://doi.org/10.12932/AP-050619-0575
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/31586486
ID情報
  • DOI : 10.12932/AP-050619-0575
  • PubMed ID : 31586486

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