SARS-CoV-2 死亡率によるユーモラル機能的進化の軌跡を損なう
Tomer Zohar1, Carolin Loos1, Stephanie Fischinger2
1Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
Cell
|November 18, 2020
まとめ
生存しなかった重症のCOVID-19患者は,IgG抗体の反応が弱くなり,免疫機能が低下したことを示した. 早期の機能性抗体開発は,SARS-CoV-2感染の解消に不可欠です.
科学分野:
- 免疫学
- ウイルス学
- 感染症
背景:
- SARS-CoV-2に対する効果的なワクチンの開発は,明確に定義された免疫の相関性の欠如によって妨げられています.
- 中和化抗体は他のウイルスに対する保護と関連しているが,一般集団におけるSARS-CoV-2に対する保護の十分性は不明である.
研究 の 目的:
- 中程度から重度のSARS-CoV-2感染で入院している患者の体内免疫反応の早期進化を調査する.
- 疾患の重度と結果に関連した独特の体内免疫経路を特定する.
主な方法:
- IgM,IgA,IgGの抗体レベルを含む体内免疫反応の分析
- 193人の入院患者におけるFcガンマ受容体結合とFcエフェクター機能の評価
- 生存者と生存者,そして中等重症と重症のグループ間の免疫反応の比較.
主要な成果:
- 重症で生存しなかった患者は,IgG反応が弱まり,Fcガンマ受容体結合が損なわれ,Fcエフェクター活性が低下した.
- 強いIgMとIgAの反応は,重症の生存者と生存しなかった両方で観察されました.
- 病気が中程度であった個人は,遅れたが,最終的に成熟したユーモラル反応を示した.
結論:
- 重度のSARS-CoV-2感染の生存者には,免疫を強化するよりも,体調の発達が欠けていることが特徴でした.
- SARS-CoV-2 感染症の解消には独特の体内免疫経路が関連しています.
- 効果的なSARS-CoV-2感染制御のために,早期に機能的な体内免疫が発達することが不可欠です.
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