Immunogenic Epitope Identification
Immunogenic Epitope Identification - Related Videos
08:09
Peptide Scanning-assisted Identification of a Monoclonal Antibody-recognized Linear B-cell Epitope
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Cited by 15 •
2017
Here, the authors present a simple and efficient protocol to define a linear antigenic epitope using a purified monoclonal antibody and peptide scanning through dot-blot hybridization. The identified epitope can then be used in therapeutic and diagnostic applications.
13:58
Peptide:MHC Tetramer-based Enrichment of Epitope-specific T cells
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Cited by 28 •
2012
This protocol describes the use of peptide:MHC tetramers and magnetic microbeads to isolate low frequency populations of epitope-specific T cells and analyze them by flow cytometry. This method enables the direct study of endogenous T cell populations of interest from in vivo experimental systems.
07:59
A High Throughput MHC II Binding Assay for Quantitative Analysis of Peptide Epitopes
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Cited by 21 •
2014
Biochemical assays with recombinant human MHC II molecules can provide rapid, quantitative insights into immunogenic epitope identification, deletion, or design. Here, a peptide-MHC II binding assay scaled to 384-well plates is described. This cost effective format should prove useful in the fields of protein deimmunization and vaccine design and development.
05:42
Using a Sandwich ELISA to Determine the Immunogenic Glycoprotein Content in a Vaccine
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2025
This video showcases an indirect enzyme-linked immunosorbent assay or ELISA sandwich immunocapture assay designed to assess immunogenic glycoprotein levels in vaccines. The assay plate, containing glycoprotein-specific antibodies, is incubated with serially diluted vaccine samples, including reference and test vaccines, followed by immunoassay to quantify glycoprotein content in the test vaccine.
08:44
Identification and Characterization of Immunogenic RNA Species in HDM Allergens that Modulate Eosinophilic Lung Inflammation
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2020
Environmental allergens such as house dust mites (HDM) often contain microbial substances that activate innate immune responses to regulate allergic inflammation. The protocol presented here demonstrates the identification of dsRNA species in HDM allergens and characterization of their immunogenic activities in modulating eosinophilic lung inflammation.
FAQs
Binding indicates that a peptide can associate with an MHC molecule, but immunogenicity also depends on whether the relevant immune system recognizes and responds to that complex. Consequently, identification studies pair binding measurements with immune-cell response testing or other evidence of recognition. This distinction helps separate potential presentation from biologically meaningful activation under specific conditions.
An antigen’s sequence or structure does not alone determine which regions become relevant to immunity. Processing can influence which peptide fragments are available for presentation, while presentation conditions affect whether immune cells encounter them. Including these factors helps researchers interpret why an epitope may appear important in one biological setting but show limited relevance in another.
Antibody recognition examines whether antibodies bind a particular antigenic region, whereas immune-cell response testing evaluates functional recognition by immune cells. Peptide–MHC binding supplies another complementary measurement related to presentation. Comparing these readouts can distinguish antibody-focused recognition from cellular responses and can reveal that different experimental assays address different aspects of antigen–immune interaction.
A study commonly begins with analysis of an antigen’s sequence or structure to identify candidate regions. Researchers then test selected candidates through peptide–MHC binding, antibody recognition, or immune-cell response experiments. Interpreting these results in light of antigen processing, presentation, and biological conditions helps determine which candidates are most relevant for the intended biological question.
The approach supports several distinct goals, including vaccine design, diagnostic development, and antibody engineering. It also helps investigators study host–pathogen interactions by linking antigen features with immune recognition. Because each application may prioritize presentation, antibody binding, or cellular responses differently, the selected identification strategy should match the intended use and biological context.
Characterizing relevant epitopes can make immune assays more precise by focusing measurements on antigenic regions that are recognized under defined conditions. The resulting information also helps explain how antigen structure, processing, and presentation shape disease-related or therapeutic immune responses. Such interpretation connects molecular features of an antigen with observed immune behavior rather than treating the whole antigen as uniform.