Rapid Short-Read Sequencing and Aneuploidy Detection Using MinION Nanopore Technology

Area of Science:

• Genomics
• Molecular Biology
• Bioinformatics

Background:

• The MinION sequencer is primarily designed for long DNA fragments (>6 kb).
• Rapid sequencing of short DNA fragments (<1 kb) is crucial for timely clinical applications.

Purpose of the Study:

• To develop and validate a library preparation and data-analysis method for rapid real-time sequencing of short DNA fragments using MinION.
• To assess the clinical utility of this method for aneuploidy detection.

Main Methods:

• Developed a novel library preparation and data-analysis workflow for short DNA fragments.
• Utilized the MinION nanopore sequencing platform for real-time data acquisition.
• Applied the method to prenatal and miscarriage samples for aneuploidy detection.

Main Results:

• Achieved sequencing of 500 reads in 3 minutes and 40,000-80,000 reads in 2-4 hours at 30 nt/sec.
• Successfully detected aneuploidy in clinical samples (prenatal and miscarriage) with sequencing completed in under 4 hours.

Conclusions:

• The developed method significantly expands the application range of nanopore-based single-molecule sequencing.
• This approach offers a promising and versatile tool for rapid clinical diagnostics and research.