IVT generation of guideRNAs for Cas9-enrichment Nanopore Sequencing
Gilpatrick, T.; Wang, J. Z.; Weiss, D.; Norris, A. L.; Eshleman, J. R.; Timp, W.
Show abstract
Generating high-coverage sequencing coverage at select genomic loci has extensive applications in both research science and genetic medicine. Long-read sequencing technologies (e.g. nanopore sequencing) have expanded our ability to generate sequencing data in regions (e.g. repetitive elements) that are difficult to interrogate with short-read sequencing methods. In work presented here, we expand on our previous work using CRISPR/Cas9 for targeted nanopore sequencing by using in vitro transcribed guideRNAs, with 1100 guideRNAs in a single experiment. This approach decreases the cost per guideRNA, increases the number of guideRNAs that can be multiplexed in a single experiment, and provides a way to rapidly screen numerous guideRNAs for cutting efficiency. We apply this strategy in multiple patient-derived pancreatic cancer cell lines, demonstrating its ability to unveil structural variation in "deletion hotspots" around the tumor suppressor genes p16 (CDKN2A), and SMAD4.
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