Antigen Optimization
Antigen Optimization - Related Videos
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).
05:04
Viral Antigen Microarray Assay to Detect Antibody Isotypes in Serum Against Viral Antigen
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2025
In this video, we demonstrate the process for detecting antibody isotypes in multiple human serum samples using a microarray slide printed with antigenic subtypes of influenza virus strains.
07:04
Optimization of Antigen Preparation for Hemagglutination Inhibition Assay of Newcastle Disease Virus Serology
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Cited by 1 •
2025
This article presents a simplified method for preparing 4 hemagglutination units antigen for Newcastle disease virus serological testing. By accurately determining the hemagglutination titer of the antigen, combined with a more rigorous back-titration method, and a well-defined adjustment process, it enhances test efficiency, reduces false positives, and improves disease surveillance in poultry.
04:34
An Immunohistochemistry Staining for the Detection of Rabies Virus Antigens
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2025
This video demonstrates immunohistochemistry staining for rabies virus antigen detection in infected mouse brain tissue. The process includes deparaffinization and alcohol treatment, followed by proteolytic treatment to enhance antigen accessibility. Immunohistochemistry staining reveals red precipitates, confirming the presence of rabies antigens in the tissue section.
03:04
Atomic Force Microscopy to Visualize Phage–Antigen Interactions
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2026
Source: Williams, S. M. et al. Novel Atomic Force Microscopy Based Biopanning for Isolation of Morphology Specific Reagents against TDP-43 Variants in Amyotrophic Lateral Sclerosis. J. Vis. Exp. (2015)This video demonstrates tapping-mode AFM to visualize phage–antigen interactions on a mica surface. It outlines the steps for antigen immobilization, phage binding, and high-resolution nanoscale imaging.
FAQs
Sequence changes can modify which regions are processed into presented fragments and which molecular surfaces are available for receptor binding. As a result, optimization may favor recognition by selected B-cell or T-cell receptors rather than preserving every original feature. This is important when researchers want to emphasize immune targets associated with a desired response during infection or vaccination.
A molecule that remains stable and can be produced efficiently is more practical for research and development, while its expression properties can influence how much material is available for testing or formulation. These characteristics also affect whether the antigen retains structural features needed for receptor recognition. Improving them can support consistent evaluation of immune responses and diagnostic performance.
Epitope composition determines which immune-recognized regions are included, altered, or emphasized. Researchers can use this control to support recognition by relevant B-cell or T-cell receptors while limiting regions associated with unwanted or nonfunctional recognition. The choice is therefore linked to the intended outcome, such as a targeted vaccine response, a diagnostic signal, or an immunotherapeutic effect.
Evaluation should consider whether the redesigned molecule has improved stability, production, presentation, and targeted receptor recognition. Researchers can compare these properties with those of the original antigen to determine whether molecular changes provide a useful benefit without losing relevant immune features. This comparison connects laboratory design choices with the antigen’s intended application in infection and immunology.
In vaccine development, optimization can focus immune recognition on antigen features that are most relevant to protective immunity. Adjusting sequence, structure, or epitope composition may also help the antigen remain usable during production and become efficiently processed for presentation. These design goals allow investigators to test whether a modified molecule produces a stronger or more focused response than the starting antigen.
For diagnostic reagents, optimized antigens can be designed to improve useful recognition while limiting nonfunctional interactions that could reduce interpretability. In immunotherapy research, the same principles help direct recognition toward selected molecular targets. Researchers can therefore tailor antigen properties to the desired application rather than treating stability, presentation, and receptor recognition as separate design problems.
Researchers can modify an antigen and examine how its sequence, structure, or epitope composition changes processing and recognition. Comparing these variants helps reveal which molecular features are associated with relevant B-cell or T-cell responses and protective immunity. This approach provides a way to connect antigen design with the mechanisms that shape immune responses during infection.