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2021年06月01日

Amplification-free protocol for targeted enrichment of repeat expansion genomic regions and SMRT Sequencing

Author(s): Tsai, Yu-Chih and McLaughlin, Ian and Ziegle, Janet

Many genetic disorders are associated with repeat sequence expansions. Obtaining accurate DNA sequence information from these regions will facilitate researchers to further establish the relationship between these genetic disorders and underlying disease mechanisms. Moreover, repeat interruptions have also been shown to act as phenotypic modifiers in some disorders. Targeted sequencing is an economical way to obtain sequence information from one or more defined regions in a genome. However, most targeted enrichment and sequencing methods require some form of DNA amplification. Amplifying large regions with extreme GC content as seen in repeat expansion disorders is challenging and prone to introducing sequence artifacts. DNA amplification also removes any epigenetic signatures present in native DNA. This technique also preserves native DNA molecules for the possibility of direct characterization of epigenetic signatures.

Organization: PacBio
Year: 2020

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