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Enrichment of open reading frames presented on bacteriophage M13 using hyperphage
Michael Hust1, Maren Meysing, Thomas Schirrmann
1Technische Universität Braunschweig, Institut Für Biochemie und Biotechnologie, Germany. m.hust@tu-bs.de
Biotechniques
|September 23, 2006
Summary
This study introduces Hyperphage, improving open reading frame (ORF) enrichment and polypeptide display on phage M13. This method enhances pathogen antigen discovery for diagnostics and therapeutics by streamlining ORF enrichment and binding screening.
Area of Science:
- Molecular Biology
- Immunology
- Biotechnology
Background:
- Phage display is crucial for identifying pathogen antigens and developing diagnostics/therapeutics.
- Current methods for open reading frame (ORF) enrichment and polypeptide display can be improved.
Purpose of the Study:
- To introduce Hyperphage, a novel helperphage for enhanced phage display.
- To combine ORF enrichment and binding screening into a single, efficient step.
Main Methods:
- Utilized Hyperphage, a helperphage with a truncated gIII, for phage display.
- Enriched ORFs from cDNA libraries and displayed corresponding polypeptides on phage M13.
- Demonstrated method efficacy by isolating epitopes from Salmonella typhimurium ompD gene.
Main Results:
- Successfully isolated two immunogenic epitopes from Salmonella typhimurium ompD.
- Confirmed correct translation of fusion proteins via ELISA.
- Achieved a tenfold increase in ORF-containing phages from lymphocyte cDNA compared to conventional systems.
Conclusions:
- Hyperphage-based system significantly improves ORF enrichment and direct polypeptide display on phage M13.
- This method streamlines the discovery of pathogen-related antigens.
- Offers a more efficient approach for developing new diagnostics and therapeutics.
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