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Updated: Dec 14, 2025

12:59
Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
Published on: September 26, 2013
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動脈硬化における病原性自己免疫は,最初は保護性アポリプロテインB100- 反応性CD4+T細胞から進化する
Dennis Wolf1,2,3, Teresa Gerhardt1,2,4, Holger Winkels1
1Laboratory of Inflammation Biology(D.W., T.G., H.W., A.B.P., Y.G., K.B., J.M., L.B., K.K., M.V., E.E., A.A., M.S., T.K., K.L.), La Jolla Institute for Immunology, CA.
Circulation
|July 25, 2020
まとめ
動脈硬化には自己反応性CD4+T細胞が含まれています. アポリプロテインB (apoB) に対して最初は保護的であったT細胞 (Tregs) は病原性になり,疾患の進行を防ぐことができない.
科学分野:
- 免疫学
- 心血管研究
- 自己免疫性
背景:
- 動脈硬化には,CD4+ Tヘルパー細胞とアポリプロテインB (apoB) が自己抗原として関与する.
- 病原性Tヘルパー型1 (TH1) 細胞は知られているが,アポBに特異的なアテロプロテクティブレギュレータ性T細胞 (Tregs) は健康な個体で示唆されている.
研究 の 目的:
- 動脈硬化症におけるアポB反応性T細胞の機能を調査する.
- アポB反応性Tレグと病原性TH1細胞の関係を理解する.
主な方法:
- マウス apo B978-993ペプチドに反応する単一のT細胞を追跡するためにMHCクラスIIテトラマーを使用した.
- T細胞のトランスクリプトームとフェノタイプを分析するために単細胞RNAシーケンシングとフローサイトメトリーを使用した.
- ハイパーリピデミアのマウスで 養子移植実験を行いました
主要な成果:
- 健康なマウスのApoB反応性T細胞は,Tregのようなトランスクリプトームを示したが,FoxP3の発現は低かった.
- 単細胞配列解析により,apoB+ T細胞の混合THシグネチャー (TH1,TH2,TH17,Tfh) が明らかになった.
- ApoB+ T細胞は動脈硬化で増加し,Tregマーカーの喪失とともに病原性TH1/TH17フェノタイプに変換する.
- アポB+ Tregsの養子移植は動脈硬化症に対する保護には役立ちませんでした.
結論:
- アポB反応性T細胞は,動脈硬化で予期せぬ混合フェノタイプを示します.
- apoBに対する自己免疫反応は,最初は保護的ですが,病気では制御不能になります.
- ApoB自己反応性Tregsは,動脈硬化症の治療のための潜在的な細胞標的を表しています.
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