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Imaging Effector Memory T cells in the Ear After Induction of Adoptive DTH
Published on: August 14, 2008
メモリーTリンパ球の2つのサブセットは,異なるホーミングポテンシャルとエフェクタ機能を持つ
F Sallusto1, D Lenig, R Förster
1Basel Institute for Immunology, Switzerland. sallusto@bii.ch
Nature
|October 28, 1999
まとめ
人間の記憶T細胞は,中央記憶 (TCM) と効果記憶 (TEM) の2種類に分かれています. この発見は,免疫システムがどのようにして感染症を記憶し,それに反応するかを明らかにしている.
科学分野:
- 免疫学 免疫学とは
- 細胞生物学 細胞生物学
- T細胞の差別化について
背景:
- ネイブTリンパ球はリンパ性臓器に移動し,デンドリート細胞によって提示される抗原と遭遇する.
- 活性化されたT細胞は,炎症した組織やB細胞領域を標的としたエフェクター細胞に増殖します.
- 免疫学的記憶は,強化された二次応答のための持続記憶T細胞に依存しますが,それらの特定の役割は不明です.
研究 の 目的:
- 人間の記憶T細胞の機能的異質性を調査する.
- メモリT細胞の異なるサブセットと,免疫応答におけるそれらの役割を特定する.
主な方法:
- CCR7発現に基づくヒト記憶T細胞の分析.
- 機能的測定は,移動,エフェクター機能,および差別化可能性を評価するためのものです.
主要な成果:
- CCR7の発現は,メモリT細胞をCCR7- (TEM) とCCR7+ (TCM) の2つのサブセットに分割する.
- TEM細胞は,即効因子機能を発揮し,炎症した組織に移動する.
- TCM細胞はリンパ節に宿り, dendritic細胞を刺激し,二次刺激でTEM細胞に微分化します.
結論:
- 人間の記憶T細胞は,機能的に異なるもので,TCMとTEMのサブセットが,免疫記憶における労働分割を媒介する.
- これらのサブセットは,ナイブT細胞から段階的に区別され,長期にわたって持続し,強力な保護を提供します.
- これらのサブセットを理解することで,適応免疫とワクチン開発の洞察が得られます.
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