重度のCOVID-19は,調節不良の骨髄細胞部によって特徴付けられています
Jonas Schulte-Schrepping1, Nico Reusch1, Daniela Paclik2
1Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany.
Cell
|August 19, 2020
まとめ
重度のCOVID-19は,炎症性単細胞による軽度の症例とは異なり,緊急性骨髄形成および機能不全性中性粒子を伴う. この研究は,SARS-CoV-2感染における免疫細胞の変化を詳細に示しています.
科学分野:
- 免疫学
- ウイルス学
- 血液学
背景:
- 2019年新型コロナウイルス病 (COVID-19) は,軽度の呼吸器疾患から重度の呼吸器不全まで様々である.
- 軽度のCOVID-19の保護と重度の病原性,特に中性粒子の発生と免疫不調に関する免疫メカニズムは完全に理解されていません.
研究 の 目的:
- 軽度のCOVID-19 と重度のCOVID-19 の免疫細胞の組成と活性化における動的変化を調査する.
- 単細胞レベルでのSARS-CoV-2感染に対する全身免疫反応を解明する.
主な方法:
- 単細胞RNA配列と単細胞プロテオミクスを全血および周辺血単核細胞で利用した.
- 2つのコホートと2つのセンターで109人のサンプルを分析した.
主要な成果:
- 軽度のCOVID-19では,インターフェロン刺激による炎症性単細胞のHLA-DRhiCD11chiが増加した.
- 重度のCOVID-19は,中性粒子の前駆体 (緊急骨髄形成),機能不全した成熟した中性粒子,およびHLA-DRlo単細胞によって特徴付けられました.
結論:
- この研究は,重度のCOVID-19において,骨髄細胞区画に重大な変化があることを示しています.
- SARS-CoV-2 感染症に対する全身免疫反応に関する詳細な洞察,軽度と重度の疾患における異なる骨髄細胞プロフィールを強調.
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