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Updated: Aug 19, 2026

Visualizing Antigen Specific CD4+ T Cells using MHC Class II Tetramers

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CD4とCD3:α:βT細胞受容体の物理的な関連性を示す証拠

K Saizawa, J Rojo, C A Janeway

|July 16, 1987

まとめ

Tリンパ球のCD4分子は,T細胞の抗原認識複合体の一部かもしれない. 発見は,T細胞受容体複合体とCD4の間の物理的な関連性を示唆し,T細胞活性化に影響を与える.

科学分野:

免疫学免疫学とは
分子生物学は分子生物学である.
細胞生物学細胞生物学

背景:

CD4はTリンパ球の表面分子であり,MHCクラスIIの異種抗原の認識に関与する.
CD3とアルファベータ鎖で構成されるT細胞受容体 (TCR) は,特定の抗原の認識を媒介する.
CD4の正確な役割は,TCR複合体のアクセサリまたは不可欠であるかどうか,まだ議論されています.

研究の目的:

CD4とTCR複合体の間の物理的な関連性を調査する.
CD4がT細胞抗原認識機構の不可欠な構成要素であるかどうかを判断する.

主な方法:

CD4発現を評価するために,抗T細胞受容体抗体を用いた共調化の実験.
単価抗TCRファブ断片と双価抗CD4抗体を用いたT細胞活性化アッセイ.

主要な成果:

抗TCR抗体はTCRとCD4発現の共調を誘導した.
組み合わせたFab抗TCRと双価抗CD4抗体が活性化されたT細胞.

結論:

結果は,TCR複合体とCD4との間の物理的な関連性を示す証拠を提供します.
CD4の役割は,補助的な機能を超えて広がり,抗原認識複合体の一部であることを示唆しています.

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