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2021年06月01日

Targeted SMRT Sequencing and phasing using Roche NimbleGen’s SeqCap EZ enrichment

Author(s): Kujawa, Steve and Hon, Lawrence and Peluso, Paul and Spittle, Kristi and Harting, John and Raterman, Denise and Richmond, Todd and Burgess, Dan

As a cost-effective alternative to whole genome human sequencing, targeted sequencing of specific regions, such as exomes or panels of relevant genes, has become increasingly common. These methods typically include direct PCR amplification of the genomic DNA of interest, or the capture of these targets via probe-based hybridization. Commonly, these approaches are designed to amplify or capture exonic regions and thereby result in amplicons or fragments that are a few hundred base pairs in length, a length that is well-addressed with short-read sequencing technologies. These approaches typically provide very good coverage and can identify SNPs in the targeted region, but are unable to haplotype these variants. Here we describe a targeted sequencing workflow that combines Roche NimbleGen’s SeqCap EZ enrichment technology with Pacific Biosciences’ SMRT Sequencing to provide a more comprehensive view of variants and haplotype information over multi-kilobase regions. While the SeqCap EZ technology is typically used to capture 200 bp fragments, we demonstrate that 6 kb fragments can also be utilized to enrich for long fragments that extend beyond the targeted capture site and well into (and often across) the flanking intronic regions. When combined with the long reads of SMRT Sequencing, multi-kilobase regions of the human genome can be phased and variants detected in exons, introns and intergenic regions.

Organization: PacBio
Year: 2015

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