Multiplexed array-based and in-solution genomic enrichment for flexible and cost-effective targeted next-generation...

Area of Science:

• Genomics
• Molecular Biology
• Bioinformatics

Background:

• Next-generation sequencing technologies have dramatically increased DNA sequencing throughput.
• Efficient analysis of exomes from multiple samples is now feasible.
• However, sample preparation and targeted enrichment remain rate-limiting and costly bottlenecks in high-throughput genetic analysis.

Purpose of the Study:

• To develop an efficient protocol for parallel library preparation and targeted enrichment of pooled, multiplexed, bar-coded samples.
• To provide a cost-effective solution for high-throughput genetic analysis.
• To offer flexibility in sample multiplexing for various sequencing applications.

Main Methods:

• A protocol for parallel library preparation and targeted enrichment of pooled multiplexed bar-coded samples was developed.
• The method is compatible with both microarray-based and solution-based capture approaches.
• The protocol details a single-tube procedure adaptable to 96-well plate formats.

Main Results:

• The protocol allows multiplexing of 3-5 samples for whole-exome sequencing, 20 samples for 5 Mb targeted regions, and 96 samples for 0.4 Mb targeted regions.
• Array-based enrichment takes 5-6 days, while solution-based enrichment takes 3-4 days from library preparation to post-enrichment amplification.
• The method significantly reduces costs and time for large-scale genetic analyses.

Conclusions:

• This protocol offers a cost-effective and efficient approach for parallel library preparation and targeted enrichment.
• It supports a broad range of applications, including targeted resequencing for genome-wide association studies and whole-exome sequencing.
• The flexible multiplexing capabilities make it suitable for large sample collections and custom sequencing projects.