SMRT Sequencing for Parallel Analysis of Multiple Targets and Accurate SNP Phasing

Area of Science:

• Genomics
• Molecular Biology
• Bioinformatics

Background:

• Single-molecule real-time (SMRT) sequencing offers longer reads than traditional next-generation (next-gen) sequencing.
• Current applications of SMRT sequencing for whole genome or exome analysis are limited.

Purpose of the Study:

• To develop and validate a barcoding-SMRT sequencing approach for simultaneous analysis of multiple genomic targets.
• To assess the utility of this approach for studying genetic changes in model systems and primary tumors.

Main Methods:

• Utilized SMRT sequencing combined with barcoding to analyze genomic targets from multiple sources.
• Applied the method to study strand-exchange intermediates in budding yeast mitotic recombination and forward mutation assays.
• Extended the barcoding-SMRT approach to analyze primary diffuse large B-cell lymphoma tumors and cell lines.

Main Results:

• Successfully analyzed multiple genomic targets simultaneously using the barcoding-SMRT method.
• Detected genetic changes in yeast recombination and mutation assays.
• Results from lymphoma samples showed agreement with previous Illumina exome sequencing data.
• SMRT sequencing inherently provides linkage information between single nucleotide polymorphisms (SNPs).

Conclusions:

• The barcoding-SMRT approach is effective for simultaneous analysis of multiple genomic targets.
• This method offers computational simplicity and eliminates the need for complex statistical analyses for mutation and recombination studies.
• The ability to identify linkage relationships between SNPs is a key advantage over other next-gen sequencing methods.