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Diversity of Antigen Receptors

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Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...

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A High Throughput MHC II Binding Assay for Quantitative Analysis of Peptide Epitopes

A High Throughput MHC II Binding Assay for Quantitative Analysis of Peptide Epitopes

Published on: March 25, 2014

Graph-based optimization of epitope coverage for vaccine antigen design.

James Theiler^1,2, Bette Korber^1,2

¹Los Alamos National Laboratory, Los Alamos, 87545, NM, U.S.A.

Statistics in Medicine

|January 30, 2017

Summary

Epigraph is a new algorithm for designing vaccines that maximize epitope coverage in diverse pathogens. It aids in rapid characterization of pathogen sequences and designing peptides for immune response evaluation.

Keywords:

algorithm antigen de Bruijn graph directed acyclic graph epitope vaccine

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Area of Science:

Computational biology
Vaccine design
Immunoinformatics

Background:

Designing vaccines against diverse pathogens requires maximizing epitope coverage.
Existing methods may not efficiently handle large, diverse sequence populations.
Understanding immune responses to variable proteins is crucial.

Purpose of the Study:

To introduce Epigraph, a computationally efficient algorithm for vaccine design.
To describe the mathematical formulation of Epigraph for optimal epitope coverage.
To present tools for characterizing pathogen populations and designing experimental peptides.

Main Methods:

Formulating the optimal coverage problem as a directed graph.
Representing candidate antigens as paths traversing the graph.
Utilizing immunologically relevant shared potential epitope frequencies for distance measures.

Main Results:

Epigraph enables efficient design of single or multi-antigen vaccines.
The Epigraph tool suite allows rapid characterization of diverse sequence populations.
New tools provide frequency summaries of distinct potential epitopes and graphical outputs.

Conclusions:

Epigraph offers a novel approach to vaccine design by optimizing epitope coverage.
The associated tool suite facilitates immunological characterization and experimental peptide design.
Epigraph provides valuable insights into pathogen diversity and vaccine strategies.