Mapping Polyclonal Antibody Responses to Infection Using Next-Generation Phage Display.

Area of Science:

• Immunology
• Molecular Biology
• Bioinformatics

Background:

• Peptide phage display traditionally maps monoclonal antibodies.
• Next-generation sequencing (NGS) enhances phage display for high-throughput screening.
• Mapping polyclonal antibody responses is crucial for understanding infection immunity.

Purpose of the Study:

• To detail methods for applying next-generation phage display (NGPD) to map polyclonal antibody responses.
• To identify mimotopes representing pathogen epitopes recognized by infected individuals' antibodies.
• To facilitate novel serological assay development and vaccine design.

Main Methods:

• Utilizing next-generation phage display (NGPD) for mass screening of peptide-antibody binding events.
• Applying NGPD to analyze antibody repertoires from individuals with specific infections.
• Identifying and characterizing mimotopes that mimic pathogen epitopes.

Main Results:

• Successful application of NGPD to map polyclonal antibody responses to infection.
• Identification of diverse mimotopes, including linear, conformational, and post-translationally modified epitopes.
• Demonstration of NGPD's capability to represent complex immunological recognition.

Conclusions:

• NGPD is a powerful tool for mapping complex antibody responses to pathogens.
• Identified mimotopes can inform the development of new diagnostic tools and vaccines.
• This methodology advances our understanding of host-pathogen interactions and immune recognition.