レギュロームの発達獲得は,先天性リンパ球細胞の機能の基礎である
Han-Yu Shih1, Giuseppe Sciumè1, Yohei Mikami1
1Lymphocyte Cell Biology Section, Molecular Immunology and Inflammation Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
Cell
|May 10, 2016
まとめ
生まれながらのリンパ球 (ILC) とTヘルパー (Th) 細胞は,規制DNA要素を共有しています. この研究は 異なる発達経路にもかかわらず 生まれつきの免疫細胞と適応性免疫細胞の間で 広範囲にわたる 共同の規制回路を明らかにしています
科学分野:
- 免疫学
- 分子生物学
- ゲノミクス
背景:
- 生まれながらのリンパ性細胞 (ILC) は,適応性CD4 ((+)) Tヘルパー (Th) 細胞の機能を反映して,免疫反応に不可欠です.
- ILCサブセットとTh細胞の関係を理解することは,免疫システムの調節を理解するために不可欠です.
研究 の 目的:
- ゲノム全体のクロマチンのアクセシビリティを測定することによって,ILCサブセットとTh細胞の対称性との関係を調査する.
- 生まれつきの免疫部門と適応免疫部門の間で共有される規制回路を特定する.
主な方法:
- ゲノム全体のクロマチンのアクセシビリティプロファイリングは,ILCsとCD4 (((+)) T細胞で行われました.
- 分析はエフェクタ遺伝子の近くの規制領域に焦点を当てた.
- Th細胞の分化を研究するために,2型感染モデルを使用した.
主要な成果:
- クロマチンは,開発中に獲得された活性化前のILCで選択的にアクセスできます.
- 対照的に,ナイヴのCD4 ((+)) T細胞は,Th細胞の分化中に重要なクロマチンの改造を経験する.
- Th2細胞は,ILC2レギュロームへの実質的な収束を示し,共通の規制要素を示しています.
結論:
- 生まれながらの (ILC) と適応性のある (Th細胞) 免疫部門の間に,広範囲にわたる規制回路が存在する.
- ILCにおけるクロマチンのアクセシビリティパターンは,開発中に大きく確立され,活性化すると安定します.
- 免疫細胞の分化には 重要なクロマチンの改造が含まれており 調節的景観の収束につながります
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