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Related Experiment Videos

A 768-lane microfabricated system for high-throughput DNA sequencing.

James H Aborn1, Sameh A El-Difrawy, Mark Novotny

  • 1Whitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, MA 02142, USA.

Lab on a Chip
|May 26, 2005
PubMed
Summary

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A new 768-lane microfluidic DNA sequencing system offers a scalable, high-throughput alternative to capillary arrays. This advanced platform achieves high accuracy and read length, reducing sample requirements for long-read de novo sequencing.

Area of Science:

  • Genomics
  • Biotechnology
  • Analytical Chemistry

Background:

  • Capillary array electrophoresis is a standard for DNA sequencing.
  • There is a need for scalable, high-throughput sequencing technologies.
  • Microfluidic devices offer potential for miniaturization and increased parallelism.

Purpose of the Study:

  • To design and evaluate a 768-lane microfluidic DNA sequencing system.
  • To demonstrate its capability for long-read de novo sequencing.
  • To assess its performance as a successor to capillary array systems.

Main Methods:

  • Development of large-format (25 cm x 50 cm) microfluidic plates with 384 lanes each.
  • Automated cycling between electrophoresis and regeneration using a robotic pipettor.

Related Experiment Videos

  • Application of Sanger chemistry at reduced sample concentrations (1/32x to 1/256x).

    • Main Results:

    • Achieved >172,000 bases with 99% accuracy (Phred 20) per 384-lane plate iteration.
    • System throughput exceeds 4 megabases (Phred 20) per day.
    • Demonstrated a 16-fold improvement in scaling compared to previous microfluidic devices.
    • Microfluidic plates showed a usable life of >150 hours (>50 runs).

    Conclusions:

    • The 768-lane microfluidic system is a viable near-term successor to capillary electrophoresis for DNA sequencing.
    • Advances in read length and reduced sample requirements address cost-effectiveness for new technologies.
    • The platform shows significant potential for scalable, high-throughput genomic applications.