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Scalable High Throughput Selection From Phage-displayed Synthetic Antibody Libraries
Published on: January 17, 2015
Controlling the selection stringency of phage display using a microfluidic device
Yanli Liu1, Jonathan D Adams, Kelisha Turner
1Neuroscience Research Institute, University of California, Santa Barbara, CA93106, USA.
Abstract:
We report the utilization of microfluidic technology to phage selection and demonstrate that accurate control of washing stringency in our microfluidic magnetic separator (MMS) directly impacts the diversity of isolated peptide sequences. Reproducible generation of magnetic and fluidic forces allows controlled washing conditions that enable rapid convergence of selected peptide sequences. These findings may provide a foundation for the development of automated microsystems for rapid in vitro directed evolution of affinity reagents.
Insights
Microfluidic technology precisely controls phage selection washing stringency. This enables rapid isolation of diverse peptide sequences, advancing automated directed evolution for affinity reagents.
Area of Science:
- Biotechnology
- Biochemistry
- Microfluidics
Background:
- Phage selection is a key method for discovering affinity reagents.
- Current methods can be time-consuming and lack precise control over selection parameters.
- Microfluidic systems offer potential for enhanced control and automation.
Purpose of the Study:
- To investigate the impact of controlled washing stringency in microfluidics on phage selection.
- To demonstrate the utility of a microfluidic magnetic separator (MMS) for peptide sequence isolation.
- To explore the foundation for automated microsystems in directed evolution.
Main Methods:
- Utilized microfluidic technology for phage selection.
- Employed a microfluidic magnetic separator (MMS) for controlled washing.
- Varied washing stringency to assess its effect on isolated peptide diversity.
Main Results:
- Accurate control of washing stringency in the MMS directly impacted the diversity of isolated peptide sequences.
- Reproducible magnetic and fluidic forces enabled controlled washing conditions.
- Rapid convergence of selected peptide sequences was observed.
Conclusions:
- Microfluidic control over washing stringency is critical for optimizing phage selection.
- The developed MMS facilitates rapid and controlled isolation of peptide sequences.
- Findings support the development of automated microsystems for in vitro directed evolution of affinity reagents.

