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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Humoral Immune Responses01:36

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Antigens Involved in Adaptive Immunity01:26

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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.
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The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
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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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Updated: May 7, 2026

Murine Model of CD40-activation of B cells
12:24

Murine Model of CD40-activation of B cells

Published on: March 6, 2010

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ネズミのEアルファ免疫応答遺伝子である.

D J Mathis, C O Benoist, V E Williams

    Cell
    |March 1, 1983
    PubMed
    まとめ
    この要約は機械生成です。

    研究者らは,マウリンのEアルファ遺伝子を特徴付け,これは主要な組織適合性複合体の重要な構成要素である. この免疫応答遺伝子は,トランスクリプションで調節されたヒトの同位体との構造と機能が保存されていることを示しています.

    さらに関連する動画

    Retroviral Infection of Murine Embryonic Stem Cell Derived Embryoid Body Cells for Analysis of Hematopoietic Differentiation
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    Induction of Experimental Autoimmune Encephalomyelitis in Mice and Evaluation of the Disease-dependent Distribution of Immune Cells in Various Tissues
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    関連する実験動画

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    Murine Model of CD40-activation of B cells
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    Retroviral Infection of Murine Embryonic Stem Cell Derived Embryoid Body Cells for Analysis of Hematopoietic Differentiation
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    Induction of Experimental Autoimmune Encephalomyelitis in Mice and Evaluation of the Disease-dependent Distribution of Immune Cells in Various Tissues
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    科学分野:

    • 免疫遺伝学 免疫遺伝学
    • 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) は,免疫反応において重要な役割を果たします.
    • Eアルファ遺伝子は,MHC内の免疫応答遺伝子である.

    研究 の 目的:

    • ネズミのEアルファ遺伝子のcDNAとゲノムクローンを分離し,配列化する.
    • ネズミのEアルファ遺伝子をヒトの同位体DRアルファと比較する.
    • Eアルファ遺伝子発現の転写制御を調査する.

    主な方法:

    • cDNAとゲノムクローンの分離とシーケンシング.
    • ネズミとヒトの遺伝子間の比較配列分析.
    • 異なる細胞タイプの遺伝子発現パターンの分析.

    主要な成果:

    • マウリンEアルファとヒトDRアルファ遺伝子の間で,同一のイントロン-エクソン構造が観察されました.
    • タンパク質をコードする配列,特に免疫グロブリンのような折りたたみの配列は保存状態が良好です.
    • 非コード配列は,プロモーター領域を除いて,保存が少ない.
    • 差異的な遺伝子発現は,ゲノム再編成の明らかな必要なしに,転写的に調節されます.

    結論:

    • ネズミのEアルファ遺伝子は,ヒトのDRアルファ遺伝子と構造と配列の相似性を有する.
    • 転写調節は,様々な細胞タイプにおけるEα遺伝子発現を制御する主要なメカニズムである.