早期の炎症は,皮膚のTヘルパー2細胞-繊維芽細胞のニッチを刺激する
Ian C Boothby1,2, Maxime J Kinet3, Devi P Boda1
1Department of Dermatology, University of California at San Franscisco, San Francisco, CA, USA.
Nature
|October 28, 2021
まとめ
早期の炎症は 皮膚の免疫を変化させ 永久に変化させます ネズミの新生児の炎症は,皮膚の特定のTヘルパー2 (TH2) 細胞のニッチにつながり,将来の反応に影響を与えました.
科学分野:
- 免疫学
- 皮膚科
- 組織生物学
背景:
- 早期の炎症は 組織の免疫反応を 永久に変えてしまうのです
- 非リンパ球組織におけるこれらの免疫変化を駆動するメカニズムは十分に理解されていません.
- 新生児の炎症が皮膚免疫に及ぼす長期的な影響については,さらなる調査が必要である.
研究 の 目的:
- 早期の炎症に起因する皮膚の免疫トーンの変化を 細胞および分子メカニズムで調べる
- このプロセスに関与する特定の免疫細胞集団と組織ニッチを特定する.
- 人間の皮膚疾患におけるこれらのメカニズムの潜在的な役割を調査する.
主な方法:
- ネズミの新生児の過渡性炎症の誘発は,T細胞の調節によるものです.
- 皮下組織の免疫細胞組成と微解剖学的分析
- TH2細胞と相互作用するファイブロブラスト集団の識別と特徴付け.
- 創傷後の新生児の炎症に対する皮膚修復反応の評価
- 線維細胞マーカーと疾患の背景におけるヒトの皮膚生検の分析 (エオシノフィル性ファシイチス).
主要な成果:
- 新生児の炎症はマウスの皮膚の下皮組織の異常を引き起こした.
- 2型ヘルパーT細胞 (TH2) の特定のニッチが特定され,成人期まで維持された.
- これらのTH2細胞は,皮膚帯膜における新しい線維芽細胞集団 (TIFFs) と相互作用した.
- TIFFはTH2サイトカインに反応して拡張し,繊維帯を形成し,変異した傷の治癒のために皮膚を準備します.
- TIFFの特性を有するヒトの皮膚線維芽細胞が発見され,エオシノフィルのファシイチスでは高濃度であった.
結論:
- TH2相互作用性ファシアル線維芽細胞 (TIFF) を含む,以前未知の皮膚のTH2細胞ニッチが定義されました.
- 新生児の炎症は,適応性免疫細胞とストロマ細胞の相互作用によって,皮膚に長期にわたる免疫的セットポイントを確立します.
- このメカニズムは,生命の初期に起こった出来事が,特にエオシノフィル性ファシイトのような疾患において,生涯にわたる組織免疫と疾患の感受性にどのように影響するかについての洞察を提供します.
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