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Updated: Jul 17, 2026

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A Method For Production of Recombinant mCD1d Protein in Insect Cells.
Published on: December 11, 2007
グリコシルセラミドによるCD1d制限およびTCR媒介のNKT細胞のバルファ14活性化
1CREST (Core Research for Evolutional Science and Technology) Project, Japan Science and Technology Corporation (JST), 1-8-1 Inohana, Chuo, Chiba 260, Japan.
まとめ
自然のキラーT (NKT) 細胞は,特定のグリコシルセラミドリガンドを認識する. この認識は,T細胞とNK細胞と共有される経路を含み,独特の免疫系相互作用を強調しています.
科学分野:
- 免疫学 免疫学とは
- 細胞生物学 細胞生物学
- 分子認識による分子認識
背景:
- ナチュラルキラーT (NKT) リンパ球は,独特の不変のT細胞抗原受容体 (TCR),Valpha14-Jalpha281.1を有しています.
- この不変のTCRの特定のリガンドは,以前は特定されていなかった.
研究 の 目的:
- インヴァリアントのValpha14NKT細胞TCRのリガンドを特定する.
- Valpha14 NKT細胞の活性化に関与する分子機構と細胞経路の解明.
主な方法:
- 特定の脂肪アシル (C26) とスフィンゴシン (C18) 鎖の長さを持つ新しいグリコシルセラミドリガンドの特定.
- クロロクイン-コンカナマイシンAおよび共刺激分子 (CD1d/Vbeta8,CD40/CD40L,B7/CTLA-4/CD28) を標的にする抗体を含む様々な阻害療法を使用してValpha14 NKT細胞増殖を評価する.
主要な成果:
- Valpha14 NKT細胞 TCR.のために新しいグリコシルセラミドリガンドが特定されました.
- Glycosylceramideによって誘発されたValpha14 NKT細胞の増殖は,リゾソーム機能の阻害剤とCD1d,CD40,B7経路に対する抗体によって阻害されました.
- トランスポーター関連タンパク質との干渉は,増殖反応に影響を与えませんでした.
結論:
- 特定されたグリコシルセラミドは,不変のNKT TCR.のための特定のリガンドとして作用する.
- このリガンドによるValpha14 NKT細胞の活性化には,T細胞とNK細胞認識システムの両方と重複する経路が含まれています.
- これは,従来のT細胞とは異なるNKT細胞のハイブリッド認識メカニズムを示唆しています.
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