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Antibody Actions

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 Structure

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...

Immunoprecipitation

Immunoprecipitation

Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
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Affinity and Avidity

Affinity and Avidity

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Related Experiment Video

Updated: Jul 9, 2026

Selection of Aptamers for Amyloid β-Protein, the Causative Agent of Alzheimer's Disease

Selection of Aptamers for Amyloid β-Protein, the Causative Agent of Alzheimer's Disease

Published on: May 13, 2010

Anti-coagulant aptamers.

Subash Chandra Bose Gopinath¹

¹National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan. gopi-subashchandrabose@aist.go.jp

Thrombosis Research

|December 7, 2007

Summary

Aptamer technology has advanced, leading to the development of aptamer-based anticoagulant agents. This review explores their mechanisms and functions as potential alternatives to existing treatments.

Area of Science:

Biotechnology
Biochemistry
Pharmacology

Background:

Aptamer technology has seen significant development over the last decade.
This progress has enabled diverse clinical applications, including the evolution of aptamer-based anticoagulant agents.

Purpose of the Study:

To review the mechanisms and functions of anticoagulant aptamers.
To discuss their potential as alternative anticoagulant agents.

Main Methods:

Literature review of aptamer-based anticoagulant agents.
Analysis of aptamers targeting proteins in the blood coagulation cascade.

Main Results:

Several anticoagulant aptamers targeting different proteins of the coagulation cascade are currently available.

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These aptamers are progressing through clinical trials.

Conclusions:

Anticoagulant aptamers represent a promising alternative to existing anticoagulant therapies.
Further research and clinical trials are ongoing to establish their efficacy and safety.