DNA sequencing using polymerase substrate-binding kinetics

Nat Commun. 2015 Jan 23:6:5936. doi: 10.1038/ncomms6936.

Abstract

Next-generation sequencing (NGS) has transformed genomic research by decreasing the cost of sequencing. However, whole-genome sequencing is still costly and complex for diagnostics purposes. In the clinical space, targeted sequencing has the advantage of allowing researchers to focus on specific genes of interest. Routine clinical use of targeted NGS mandates inexpensive instruments, fast turnaround time and an integrated and robust workflow. Here we demonstrate a version of the Sequencing by Synthesis (SBS) chemistry that potentially can become a preferred targeted sequencing method in the clinical space. This sequencing chemistry uses natural nucleotides and is based on real-time recording of the differential polymerase/DNA-binding kinetics in the presence of correct or mismatch nucleotides. This ensemble SBS chemistry has been implemented on an existing Illumina sequencing platform with integrated cluster amplification. We discuss the advantages of this sequencing chemistry for targeted sequencing as well as its limitations for other applications.

MeSH terms

  • Bacteriophage phi X 174 / genetics
  • Base Pair Mismatch
  • Base Sequence
  • DNA / chemistry
  • DNA-Directed DNA Polymerase / chemistry*
  • Equipment Design
  • Genome, Viral
  • Genomics
  • High-Throughput Nucleotide Sequencing / instrumentation*
  • High-Throughput Nucleotide Sequencing / methods*
  • Kinetics
  • Molecular Sequence Data
  • Nucleotides / genetics*
  • Polymers
  • Sequence Analysis, DNA*

Substances

  • Nucleotides
  • Polymers
  • DNA
  • DNA-Directed DNA Polymerase

Associated data

  • BioProject/ERP008659
  • BioProject/PRJEB7720