Selection of Antigen Binders from a Chicken Single-Chain Variable Fragment Library

Area of Science:

• Immunotechnology
• Molecular Biology
• Biotechnology

Background:

• Chickens are highly efficient in producing antibodies against specific antigens.
• Phage display technology enables the isolation of high-affinity single-chain variable fragments (scFvs) from antibody libraries.
• Identifying antigen-specific binders is a crucial step after library construction.

Purpose of the Study:

• To describe a comprehensive process for screening phage display chicken antibody libraries.
• To detail the bio-panning technique for isolating antigen binders.
• To outline methods for assessing and analyzing selected clones.

Main Methods:

• Bio-panning: iterative cycles of phage binding to antigen, washing, elution, and reamplification.
• Phage ELISA: enzyme-linked immunosorbent assay to screen clone pools and identify single clones.
• High-throughput sequencing: analysis of selected clone pools to characterize the antibody repertoire.

Main Results:

• The described methods enable efficient screening of chicken antibody libraries.
• Bio-panning successfully enriches for phage displaying antigen-specific scFvs.
• Phage ELISA and high-throughput sequencing facilitate the identification and characterization of desired clones.

Conclusions:

• Phage display of chicken antibody libraries is a powerful tool for generating high-affinity scFvs.
• The detailed bio-panning and analysis workflow provides a robust strategy for antibody discovery.
• This approach supports diverse applications requiring specific antigen binders.