関連する実験動画
Updated: Jul 29, 2026
09:41
A Method For Production of Recombinant mCD1d Protein in Insect Cells.
Published on: December 10, 2007
脂質抗原がCD1受限アルファベータ+T細胞によって認識される
E M Beckman1, S A Porcelli, C T Morita
1Department of Rheumatology and Immunology, Brigham and Women's Hospital, Boston, Massachusetts.
Nature
|December 15, 1994
まとめ
CD1分子は,Mycobacterium tuberculosisからのミコリック酸のような微生物の脂質抗原をT細胞に提示する. この発見は,タンパク質抗原を超えてT細胞受容体認識に関する私たちの理解を広げています.
科学分野:
- 免疫学 免疫学とは
- 微生物学 微生物学とは
- 分子生物学は分子生物学である.
背景:
- メジャー・ヒストコンパティビリティ・コンプレックス (MHC) 分子は,T細胞にペプチドを提示する.
- MHCと構造的に異なるCD1分子は,抗原を提示するように提案されています.
- 以前の研究では,CD1分子がT細胞による微生物抗原認識を制限することを示唆していた.
研究 の 目的:
- CD1分子によって提示される抗原の性質を調査する.
- CD1分子に非タンパク質抗原があるかどうかを判断する.
- T細胞受容体によって認識される抗原の多様性を探求する.
主な方法:
- Mycobacterium tuberculosisからのCD1b制限抗原の浄化. Mycobacterium tuberculosisからCD1b制限抗原の浄化. Mycobacterium tuberculosisからCD1b制限抗原の浄化. Mycobacterium tuberculosisからCD1b制限抗原の浄化. Mycobacterium tuberculosisからCD1b制限抗原の浄化.
- アルファベータT細胞受容体 (TCR) +T細胞に精製された抗原を提示する.
- 抗原構造とT細胞認識の分析.
主要な成果:
- ミコリック酸は,ミコバクテリアに含まれる脂質であり,CD1b制限抗原として特定されました.
- この脂質抗原は,アルファベータTCR+T細胞に提示された.
- CD1bが脂質抗原を提示する能力を実証した.
結論:
- CD1分子はペプチドだけでなく,脂質抗原も提示することができます.
- アルファベータTCR+T細胞は,これまでに知られていたよりも幅広いアンチゲンを認識します.
- これにより,微生物の抗原表示とT細胞認識の範囲が拡大されます.
関連する概念動画
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The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
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01:26Antigens 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.
01:28Diversity of Antigen Receptors
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
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01:22T Cell Activation and Clonal Selection
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Naive T cells that have not yet encountered an antigen express two primary CD...
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01:27Cytotoxic T Cells-mediated Immune Response
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01:29Immune Response Against Viral Pathogens
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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...