Enrichment of unamplified DNA and long-read SMRT Sequencing in unlocking the underlying biological disease mechanisms of repeat expansion disorders

Author(s): Ekholm, Jenny and Tsai, Yu-Chih and Tyson, Clark A.

For many of the repeat expansion disorders, the disease gene has been discovered, however the underlying biological mechanisms have not yet been fully understood. This is mainly due to technological limitations that do not allow for the needed base-pair resolution of the long, repetitive genomic regions. We have developed a novel, amplification-free enrichment technique that uses the CRISPR/Cas9 system to target large repeat expansions. This method, in conjunction with PacBio’s long reads and uniform coverage, enables sequencing of these complex genomic regions. By using a PCR-free amplification method, we are able to access not only the repetitive elements and interruption sequences accurately, but also the epigenetic information.

Organization: PacBio
Year: 2016

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