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Related Experiment Video

Updated: Jul 10, 2026

Scalable High Throughput Selection From Phage-displayed Synthetic Antibody Libraries
12:55

Scalable High Throughput Selection From Phage-displayed Synthetic Antibody Libraries

Published on: January 17, 2015

Continuous affinity-based selection: rapid screening and simultaneous amplification of bacterial surface-display

D Patel1, S Vitovski, H J Senior

  • 1Division of Genomic Medicine, University of Sheffield, Royal Hallamshire Hospital, Sheffield S10 2RX, UK.

The Biochemical Journal
|July 21, 2001
PubMed
Summary

A novel continuous biopanning method integrates affinity chromatography and bacterial growth for efficient enrichment. This technique rapidly amplifies rare receptor-expressing bacteria (R+ve) from large populations.

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Last Updated: Jul 10, 2026

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Published on: January 17, 2015

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Published on: October 15, 2016

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Semi-automated Biopanning of Bacterial Display Libraries for Peptide Affinity Reagent Discovery and Analysis of Resulting Isolates

Published on: December 6, 2017

Area of Science:

  • Biotechnology
  • Microbiology
  • Biochemistry

Background:

  • Bacterial surface display libraries are crucial for discovering novel proteins and enzymes.
  • Traditional biopanning methods can be time-consuming and labor-intensive for enriching rare variants.

Purpose of the Study:

  • To develop a new method for continuous biopanning that enhances the efficiency of enriching specific bacterial populations.
  • To combine affinity chromatography with bacterial culture for simultaneous enrichment and amplification of receptor-positive (R+ve) bacteria.

Main Methods:

  • A continuous culture system was designed using an affinity fermenter with an immobilized ligand.
  • Mixed bacterial populations were applied, and retained bacteria grew under continuous washout conditions.
  • Weakly binding bacteria were selectively removed, enriching for R+ve bacteria.

Main Results:

  • Achieved enrichment factors as high as 55 million-fold.
  • Successfully amplified R+ve bacteria from an initial ratio of less than 1 in 10^8 to a final ratio of 1 in 12.
  • Demonstrated simultaneous enrichment and amplification of rare founder bacteria.

Conclusions:

  • The developed continuous biopanning method offers a powerful tool for rapid screening of bacterial libraries.
  • This technology facilitates directed evolution studies by efficiently isolating and amplifying desired bacterial variants.