関連する実験動画
Updated: Aug 8, 2026

06:56
Antibody Transfection into Neurons as a Tool to Study Disease Pathogenesis
Published on: September 26, 2012
アンチイオトープによる抗原模倣の分子基礎
B A Fields1, F A Goldbaum, X Ysern
1Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, Rockville 20850, USA.
Nature
|April 20, 1995
まとめ
抗体は,分子レベルで抗原を模倣することができます. 抗リゾジーム抗体E5.2は構造的にリゾジームを真似している.
科学分野:
- 免疫学 免疫学とは
- 構造生物学 構造生物学とは
- バイオケミストリー バイオケミストリー
背景:
- イディオトープは,抗体におけるユニークな決定因子であり,イディオタイプを形成する.
- 反イディオタイプ性抗体は,外部の抗原を模倣し",内部イメージ"を担うことができる.
- 以前の研究では,この模倣の決定的な構造的証拠がありませんでした.
研究 の 目的:
- 抗イディオタイプ抗体による抗原の分子模倣を調査する.
- イディオトープとアンチイディオトープの相互作用の構造的基礎を決定する.
- 免疫原性を通じて機能的ミミクリを検証する.
主な方法:
- イディオトープ-アンチイディオトープ複合体のX線結晶図 (D1.3とE5.2のFv断片).
- 結合部位における残留物の相互作用の分析.
- 抗イディオタイプの抗体E5.2.2.で予防接種する.
主要な成果:
- 抗リゾーイム抗体D1.3は,類似の結合部位残基を用いてリゾーイムと抗リゾーイム抗体E5.2を結合する.
- E5.2は,リゾ酵素の接触を模倣した接触を通して,D1.3と相互作用する.
- E5.2は,免疫因子として使用されたときに,抗リソ酵素免疫反応を誘発する.
結論:
- 抗イディオタイプ抗体E5.2は,構造的にリゾジームの結合相互作用を模倣する.
- この構造的模倣は",内部イメージ"抗体という概念を支持する.
- 反イディオタイプ性抗体は,元の抗原に対する特定の免疫反応を誘発することができる.
関連する概念動画
Antibody Structure
Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Affinity and Avidity
Overview
Antibody Structure
Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Hybridoma Technology
Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
Hybridoma Selection
Commonly used fusion techniques — electroporation, polyethylene glycol...
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Commonly used fusion techniques — electroporation, polyethylene glycol...
Antibody Structure and Classes
Antibodies, also known as immunoglobulins, are produced by B cells in response to foreign substances, such as bacteria and viruses. These proteins are critical for recognizing and neutralizing these substances, protecting the body from potential harm.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.
Antibody Actions
Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...

