Antigen Immobilization
Antigen Immobilization - Related Videos
07:39
Determining Binding Affinity (KD) of Radiolabeled Antibodies to Immobilized Antigens
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2022
Here, a method is described to determine the binding affinity (KD) of radiolabeled antibodies to immobilized antigens. KD is the equilibrium dissociation constant that can be determined from a saturation binding experiment by measuring the total, specific, and nonspecific binding of a radiolabeled antibody at various concentrations to its antigen.
02:41
B Cell Activation on an Antigen-Coated Coverslip
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2025
This video demonstrates B cell activation in vitro. The process involves antigen interaction with B cell receptors, leading to cytoskeleton remodeling, immune synapse formation, lysosome movement, antigen internalization, processing, and subsequent presentation on MHC molecules for B cell activation.
02:12
Inducing Depression-like Behavior in a Mouse via Immobilization Stress
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2025
This video demonstrates the method of inducing chronic stress in a mouse through repeated immobilization, leading to corticosterone release and reduced glutamate receptor activity in neurons, which results in depression-like behavior.
06:57
Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells
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Cited by 9 •
2016
In this antigen-driven colitis model, OT-II CD4+ T cells expressing a red fluorescent protein were adoptively transferred into RAG-/- mice that express a green fluorescent protein in mononuclear phagocytes (MPs). The hosts were challenged with Escherichia coli (E.coli) expressing the ovalbumin protein (OVA) fused to a cyan fluorescent protein (CFP).
11:16
Hydrophobic Salt-modified Nafion for Enzyme Immobilization and Stabilization
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Cited by 23 •
2012
This article will describe the procedure for synthesizing a hydrophobically modified Nafion enzyme immobilization membrane and how to immobilize proteins and/or enzymes within the membrane and test their specific activity.
FAQs
Adsorption holds antigens on a material through surface association, whereas covalent immobilization connects them through reactive chemical groups. These strategies differ in how strongly the antigen is retained and how much the attachment chemistry may influence its presentation. Selecting between them therefore depends on the desired surface stability and on preserving molecular features needed for antibody recognition.
Orientation determines whether antibody-binding epitopes remain exposed rather than facing the surface or becoming inaccessible. An epitope is the part of an antigen recognized by an antibody. Controlling how antigens present these regions can improve the usefulness of the coated interface for detection and characterization, because measured binding should reflect molecular recognition rather than simple loss of access.
Surface conditions influence both antigen accessibility and background interactions. Conditions that promote attachment but also encourage nonspecific binding can reduce assay reliability, even when antigen is present. For this reason, immobilization design must balance retention with a surface environment that limits unintended molecular interactions. That balance supports more consistent measurements across biological assays.
A practical workflow begins by selecting a compatible solid surface or matrix, such as polystyrene, and choosing adsorption or covalent coupling through reactive chemical groups. The antigen is then presented under conditions intended to retain accessible epitopes while reducing nonspecific binding. Researchers can evaluate the resulting interface through the specific molecular interactions the assay is designed to measure.
It supports antibody detection and characterization by creating a localized antigen target that can be interrogated for specific binding. In an immunoassay, the resulting interface helps researchers compare or quantify molecular interactions under controlled surface conditions. This makes immobilization useful when the goal is not merely to detect binding, but also to examine how antibodies recognize an antigen.
An immobilized antigen provides a localized binding partner for molecules with affinity for that antigen. In separation or purification workflows, this selective interaction can help distinguish binding molecules from other components in a sample. The approach is especially informative when researchers want to connect molecular recognition with the recovery or study of specific biological components.
Stable antigen-coated interfaces support biosensor development by providing a defined location for specific molecular recognition. Their usefulness depends on retaining accessible epitopes and reducing nonspecific binding at the surface. These considerations help researchers design biosensing platforms in which antigen-antibody interactions can be examined under controlled conditions.