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Related Concept Videos

Cross-reactivity00:42

Cross-reactivity

Overview
Affinity and Avidity01:41

Affinity and Avidity

Overview
Antibody Actions01:26

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...
Antibody Structure01:10

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...
Antibody Structure01:10

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...
Antibody Structure and Classes01:25

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.

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Antibody Binding Specificity for Kappa (V&#954;) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
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Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study

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Antibody polyspecificity: what does it matter?

Jordan D Dimitrov1, Anastas D Pashov, Tchavdar L Vassilev

  • 1INSERM UMRS 872, Paris, France.

Advances in Experimental Medicine and Biology
|August 21, 2012
PubMed
Summary
This summary is machine-generated.

Polyspecific antibodies bind multiple antigens, playing a key role in early immune recognition and ensuring complete immune receptor repertoires. This property is crucial for understanding the immune system and has potential clinical applications.

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Antibody Binding Specificity for Kappa (V&#954;) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
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Area of Science:

  • Immunology
  • Molecular Biology
  • Structural Biology

Background:

  • Polyspecificity (polyreactivity) in antibodies, particularly naturally occurring autoantibodies, is now recognized as a biologically significant property, not merely non-specific binding.
  • The structural basis for the ability of antibodies to bind sets of unrelated antigens has been elucidated.

Purpose of the Study:

  • To explore the role of antibody polyspecificity in immune recognition and its implications for the broader immune system.
  • To understand how polyspecific binding contributes to the completeness of naive antigen receptor repertoires.
  • To investigate the potential clinical applications of induced polyspecificity.

Main Methods:

  • Structural analysis of antibody-antigen interactions.
  • Immunological assays to assess polyspecific binding.
  • Investigation of immune response maturation processes.

Main Results:

  • Polyspecific binding is fundamental to the early stages of immune recognition.
  • This binding ensures the comprehensive nature of naive antigen receptor repertoires.
  • Antibody polyspecificity is integral to antigen recognition beyond simple molecular interactions, involving cellular cooperation and antibody maturation.

Conclusions:

  • Antibody polyspecificity is a critical feature of the immune system, essential for initial antigen recognition and repertoire completeness.
  • Understanding polyspecificity enhances our comprehension of specific immune recognition.
  • Emerging research suggests potential clinical applications for induced polyspecificity.