A correctable decoding DNA sequencing with high accuracy and high throughput

Area of Science:

• Genomics
• Molecular Biology
• Biotechnology

Background:

• Next-generation sequencing (NGS) technologies face challenges in achieving high accuracy and throughput.
• Error elimination is crucial for reliable genomic analysis and medical applications.

Purpose of the Study:

• To present a novel DNA sequencing strategy, correctable two-color fluorogenic DNA decoding sequencing, to enhance accuracy and throughput.
• To demonstrate the method's capability in error detection and correction for precise genomic variation identification.

Main Methods:

• Utilizes dual-nucleotide addition and fluorogenic sequencing-by-synthesis (SBS) chemistry.
• Employs a cyclical, two-step interrogation of DNA templates with specific nucleotide combinations.
• Introduces a mixture of natural, labeled unblocked, and blocked nucleotides in each cycle.

Main Results:

• Achieves a theoretical error rate of 0.0005%, surpassing Sanger sequencing accuracy by twofold.
• Successfully detects and corrects sequencing errors, enabling accurate base sequence deduction.
• Demonstrates the ability to identify known mutation sites from a single sequencing run.

Conclusions:

• The correctable two-color fluorogenic DNA decoding sequencing method offers superior accuracy and throughput.
• This approach facilitates the identification of extremely rare genomic variations.
• Potential applications span diverse fields in biology and medicine, improving diagnostic capabilities.