関連する実験動画
Updated: Aug 13, 2026

15:42
Visualizing Antigen Specific CD4+ T Cells using MHC Class II Tetramers
Published on: March 6, 2009
人間のCD4-CD8-細胞分解性Tリンパ球による分化1抗原のクラスター認識
S Porcelli1, M B Brenner, J L Greenstein
1Department of Rheumatology and Immunology, Brigham and Women's Hospital, Boston, Massachusetts.
Nature
|October 5, 1989
まとめ
ヒトのクラスター・オブ・ディファレンシエーション1 (CD1) 分子は,T細胞の抗原認識に機能する可能性がある. この研究は,CD1aとCD1cが特定のT細胞受容体系によって認識され,MHC分子に似た役割を果たしていることを示唆しています.
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:
- クラスター・オブ・ディフェリエンテーション1 (CD1) グリコプロテインは,チモサイトやランゲルハンズ細胞のような免疫細胞で発現します.
- 彼らの機能は,メジャー・ヒストコンパティビリティ・コンプレックス (MHC) の分子と構造的に類似しているにもかかわらず,ほとんど不明のままである.
研究 の 目的:
- T細胞による抗原認識におけるCD1分子の可能性を調査する.
- CD1分子とT細胞受容体 (TCRs) がMHCから独立して相互作用するかどうかを判断する.
主な方法:
- MHC分子とのホモロジーのためにCD1分子の予測アミノ酸配列の分析.
- CD1aおよびCD1cに特異的な細胞分解性Tリンパ球 (CTL) ラインの生成と特徴付け.
- CD3-TCR複合相互作用を用いたCD1+標的細胞のT細胞認識の評価.CD3-TCR複合相互作用を用いたCD1+標的細胞のT細胞認識の評価.
主要な成果:
- CD1分子は,MHCクラスIおよびII分子の同質性を示し,β2-マイクログローブリンと結合する.
- CD1aのアルファベータTCR CTL線による特定認識と,ガンマデルタTCR CTL線によるCD1cの特定認識が実証されました.
- CD1+標的細胞のCD1固有のCTL認識は,CD3-TCR複合体に関与しており,MHCに制限されていません.
結論:
- CD1分子は,異なるT細胞集団によって認識されます.
- これらの発見は,T細胞のサブセットに対する抗原プレゼンテーションにおいて,CD1分子がMHCクラスIおよびII分子と類似して機能することを示唆しています.
関連する概念動画
Cell-mediated Immune Responses
Overview
Antigens Involved in Adaptive Immunity
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
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Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
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Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
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NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

