B細胞免疫と脳転移における治療機会
Grace Jones1, Alina Murphy1, Catalina Lee-Chang1,2
1Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.
Frontiers in immunology
|January 30, 2026
まとめ
脳転移（BrM）は、がん治療の進歩にもかかわらず予後不良である。本レビューは、中枢神経系（CNS）腫瘍微小環境におけるB細胞の過小評価されている役割を探り、新たな治療経路を示唆する。
科学分野:
- 神経腫瘍学
- 免疫学
- がん転移
背景:
- 脳転移（BrM）は、予後不良の成人における最も一般的な脳悪性腫瘍である。
- 中枢神経系（CNS）は、血液脳関門（BBB）を含む独自の免疫学的および構造的特徴を有しており、免疫監視と治療薬の送達を制限する。
- 免疫チェックポイント阻害剤（ICI）やCAR-T細胞などの現在の免疫療法は、CNS特異的な免疫的制約により、BrMではわずかな効果しか示していない。
主な方法:
- BrMの免疫学とCNSにおけるB細胞機能に関する現在の研究を統合した文献レビュー。
- BrMと原発性脳腫瘍および頭蓋外転移との構造的および免疫学的特徴の分析。
- CNS TMEにおけるB細胞の役割（抗原提示、サイトカイン分泌、 कायिकリンパ小節）の議論。
結論:
- CNS TMEは免疫療法に特有の課題をもたらし、T細胞中心のアプローチを超えた新しい戦略が必要である。
- B細胞は、CNS内での免疫刺激および免疫調節機能の可能性を提供する。
- B細胞ベースの治療による体液性免疫の活用は、脳転移性悪性腫瘍の治療のための有望な新しい道を提供する。
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