免疫グロブリンEのシアリレーションはアレルギー病原性の決定因子である
Kai-Ting C Shade1, Michelle E Conroy1, Nathaniel Washburn2
1Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Nature
|June 6, 2020
まとめ
シアリック酸の免疫グロブリンE (IgE) はピーナッツアレルギーで増加します. このシアル酸を除去すると,アレルギー反応が減少し,アレルギーの発症と重症性の重要な要因としてIgEグリコシル化が明らかになる.
科学分野:
- 免疫学
- グライコバイオロジー
背景:
- アレルギーは世界人口の3分の"に及ぶもので,免疫グロブリンE (IgE) 抗体が関与しています.
- IgEレベルとアレルギーの重度の相関は矛盾しています.
- IgGグリコシレーションは機能に影響するが,IgEグリコシレーションの疾患における役割は不明である.
研究 の 目的:
- ピーナッツアレルギーの個体におけるIgEのグリコシル化パターンを調査する.
- アレルギー疾患とIgEグリカン差異が相関するかどうかを判断する.
- アレルギー反応に対するIgEシアライテーションの機能的影響を調査する.
主な方法:
- ピーナッツアレルギーと非アレルギーの全IgEグリコシレーションの偏見のない検査
- IgEのシアル酸含有量の分析
- シアリック酸の除去がエフェクター細胞の脱粒化とアナフィラキシーモデルに与える影響を評価する機能的試験.
- シアリック酸の除去またはアシアリ化IgE投与を含む治療戦略の評価.
主要な成果:
- ピーナッツアレルギーの個人は,アレルギーのない個人に比べて,総IgEのシアル酸濃度が増加しています.
- IgEからシアル酸を除去すると,効果細胞の脱粒化とアナフィラキシーが著しく減弱する.
- 酵素によるシアル酸の除去とアシアリ化IgEの投与を含む治療介入は,アナフィラキシーを顕著に軽減します.
結論:
- IgEのグリコシレーション,特にシアリレーションは,アレルギー疾患の重要な調節因子です.
- IgEのシアル酸含有量は,アレルギーの重度の潜在的なバイオマーカーです.
- アレルギーの管理のための新しい治療戦略を提示します.
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