ヘッジホッグ経路は,血脳バリアの整合性と中枢神経系の免疫静止を促進します
Jorge Ivan Alvarez1, Aurore Dodelet-Devillers, Hania Kebir
1Neuroimmunology Unit, Center of Excellence in Neuromics, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Faculty of Medicine, Université de Montréal, Montréal, Quebec, Canada.
まとめ
アストロサイトと内皮細胞を含むヘッジホッグ (Hh) 信号伝達経路は,血脳障壁 (BBB) の維持に不可欠です. この経路はまた,BBBの炎症と免疫細胞活動を抑制します.
科学分野:
- 神経科学は神経科学である.
- 免疫学 免疫学とは
- 細胞生物学 細胞生物学
背景:
- 血脳障壁 (BBB) は,内皮細胞 (EC) とアストロサイトを通して,中枢神経系 (CNS) のホメオスタシスを維持する.
- アストロサイトはソニック・ヘッジホッグ (Shh) を分泌し,BBB ECはヘッジホッグ (Hh) 受容体を発現する.
研究 の 目的:
- BBB形成,完全性,免疫調節におけるHh信号経路の役割を調査する.
- 中枢神経系の炎症性疾患におけるHhシグナル伝達を調節する治療の可能性を決定する.
主な方法:
- ECにおけるHhシグナル伝達経路の薬理学的抑制と遺伝的不活性化.
- BBBの完全性,免疫細胞の粘着,および移動を評価するインビヴォおよびインビトロ研究.
- 炎症促進媒介体発現の分析.
主要な成果:
- Hh経路は,発達と成人期におけるBBBの形成と整合に不可欠です.
- BBB ECにおけるHhシグナリングは,炎症促進媒介体を減少させることで,免疫静止を促進します.
- Hhシグナル伝達の阻害は,白血球の結合とBBBの移動を増加させた.
結論:
- Hh経路は,BBBの整合性を促進し,中枢神経系の免疫ホメオスタシスを維持する二重の役割を果たします.
- Hh経路を標的にすることは,多発性硬化症のような中枢神経系の炎症性疾患の治療戦略を提供することができる.
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