隔離された腸リンパ節排水が適応免疫反応を誘発する
Daria Esterházy1,2, Maria C C Canesso3,4, Luka Mesin5
1Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY, USA. desterhazy@bsd.uchicago.edu.
Nature
|April 17, 2019
まとめ
腸排水リンパ節 (gLN) は,その排水する腸部位に基づいて機能的特異性を示す. 近隣のGLNは耐性を促進し,遠隔のGLNは炎症を誘発し,免疫反応と治療戦略に影響を与えます.
科学分野:
- 免疫学
- 胃腸内科
- 微生物群の研究
背景:
- 腸内免疫系は,病原体排除と共生体/栄養素に対する耐性をバランスとします.
- 不調は 炎症性腸疾患,アレルギー,感染症につながります
- 腸排水リンパ節 (gLNs) は適応免疫を指揮するが,その二重な役割は不明である.
研究 の 目的:
- 消耗する腸部を基に 免疫学的特異性を調べる
- gLNが同時に 耐受性反応と炎症反応を支える仕組みを理解する.
- gLN特有の免疫反応を標的とした治療の可能性を調査する.
主な方法:
- gLNのストロマル細胞とデンドリット細胞における遺伝子発現の分析.
- ルミナル抗原に対するT細胞分極の評価
- gLNの操作 (例えば,外科的除去) と感染後の免疫反応の調査.
主要な成果:
- gLNは免疫学的特異性を示し,排水領域に基づいて遺伝子シグネチャーとT細胞の偏分に異なっている.
- 寄近小腸のgLNは耐受性反応を促進し,遠端のgLNは炎症性T細胞反応を促進する.
- 隔離されたgLN機能により,標的のワクチン接種と局所的T細胞誘導が可能である.
結論:
- 分離的なgLN排出は,tolerogenicと炎症性腸内免疫応答の間の衝突を解決する.
- 特定のgLNをターゲットにすることで,腸内の治療的免疫調節のための戦略を提供します.
- 腸関連の免疫疾患の治療には,gLNの区分化を理解することが重要です.
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