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High-throughput, motility-based sorter for microswimmers such as C. elegans.

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  • 1Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104, USA. bau@seas.upenn.edu.

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Summary

Researchers developed an automated microfluidic device for high-throughput nematode sorting based on motility. This sensitive method efficiently isolates genetic mutants, aiding in gene discovery for biological processes.

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Area of Science:

  • Genetics
  • Developmental Biology
  • Bioengineering

Background:

  • Animal motility is influenced by genetic and environmental factors.
  • High-throughput screening is crucial for genetic studies but current methods are often labor-intensive and lack sensitivity.

Purpose of the Study:

  • To develop a sensitive, high-throughput, automated method for sorting nematodes based on motility.
  • To enable efficient isolation of rare genetic mutants for forward genetic screens.

Main Methods:

  • Implementation of a microfluidic device for automated motility-based sorting of nematodes.
  • Parallel processing capability for sorting thousands of animals per hour per module.
  • Utilizing the device for isolating known and novel motility mutants in C. elegans.

Main Results:

  • The microfluidic device successfully enriched for known Caenorhabditis elegans motility mutants.
  • Low-abundance mutants suppressing sleep-related gene (flp-13) effects were isolated.
  • The device efficiently identified mutants for the same gene as traditional visual inspection methods.

Conclusions:

  • The automated motility-based sorter provides a sensitive and high-throughput solution for nematode sorting.
  • This technology facilitates efficient gene discovery for fundamental biological processes.
  • The microfluidic device is amenable to parallelism and can significantly advance genetic screening approaches.