ミエロイド細胞粘着分子1 (CADM1) は,ヒトの炎症性腸疾患における炎症誘発信号伝達を促進する
Kimberly Darlington1, Alexandria J Shumway2, Chandan Sona3
1Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Cellular and molecular gastroenterology and hepatology
|August 29, 2025
まとめ
細胞粘着分子1 (CADM1) は,炎症性腸疾患 (IBD) の炎症を促進する. 骨髄細胞におけるCADM1を標的とした治療は,大腸炎の重症度を低下させ,腸内皮質を保護し,CADM1を治療標的として示唆した.
科学分野:
- 免疫学
- 胃腸内科
- 分子生物学
背景:
- 炎症性腸疾患 (IBD) は腸内皮質の損傷を含む.
- 細胞毒性T細胞はIBDの病原化に関与している.
- 細胞粘着分子であるCADM1はIBD大腸で上位調節されます.
研究 の 目的:
- IBDの病原性におけるCADM1の役割を調査する.
- 骨髄細胞におけるCADM1の機能を決定する.
- IBDの治療対象としてCADM1を評価する.
主な方法:
- IBDとIBD以外の患者からの結腸組織のRNAシーケンシング.
- 溶解性CADM1 (sCADM1) の機能的特徴は,自己膜単核細胞 (LPMC) にある.
- 化学誘発性大腸炎のCadm1条件付きノックアウトマウスモデルの生成
主要な成果:
- IBD大腸のマクロファージとデンドリット細胞でCADM1発現が濃縮された.
- T細胞の活性化を低下させ,大腸炎からマウスを保護した.
- CADM1 中和抗体の投与により大腸炎が緩和され,腸内皮質が保護されました.
- IBD患者における血清sCADM1濃度の上昇は,LPMCにおける炎症性STAT3リン酸化の強化と相関していた.
結論:
- CADM1は結腸の炎症誘発信号を媒介する.
- CADM1はIBDの潜在的治療標的である.
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