Tuesday, June 30th 2020 - 3:00 PM to 3:45 PM (CEST)
Sequenced genomes retain a surprisingly large number of “dark” regions – sections that have proven difficult to characterise via short-read sequencing and PCR-based approaches. Potentially valuable information or disease-relevant function of tandem repeats, structural variants, and CG-rich regions is obscured by amplification bias, ambiguous read mapping, or simply the time and cost of alternative techniques.
This webinar will explore a new enrichment method that uses short (~150 bp) detection sequences to indirectly capture target stretches of DNA generating a high-fidelity enriched sample of long regions (>100 kb) that can be used in both short- and long-read targeted sequencing.
This webinar is designed to inspire new ideas and open up new possibilities in your research. Register to learn how indirect sequence capture lets you easily examine disease-related repeats and detect unintended CRISPR edits.
Dr. Marzia Rossato, Researcher, Functional Genomic Lab, University of Verona, Italy
Dr. Marzia Rossato will delve into the details concerning clinically relevant “dark genomic regions” and how current sequencing technologies, including short- and long-reads, deal with these regions. Starting with a description of currently available diagnostic tools and what is still missing in standard diagnostics, she focuses on the importance of target enrichment for diagnostics and highlights the optimisation bias of current methods toward short-read sequencing. She then presents the benefits of coupling indirect sequence capture with long-read sequencing to overcome current technology limitations.
Dr. Peter Mouritzen, Application Development Services, Samplix, Denmark
Dr. Peter Mouritzen will shift the spotlight to describe how indirect sequence capture can identify unintended mutations associated with CRISPR editing. Standard PCR approaches fail to detect these modifications because they focus only on the immediate vicinity of the edit site. By enriching and sequencing long DNA fragments, Dr. Mouritzen’s team was able to scrutinize ~100 kb around the engineered sites. When they used indirect sequence capture with Xdrop™, they detected CRISPR-induced indels in one of 2 characterised alleles, completely missed by gold-standard methods. Dr. Mouritzen gives practical advice on strategies to validate insertions, knock-outs, and candidate off-target events.
A grant program will be launched during the webinar with a budget of €15,000. For three grant winners, Samplix will perform a pilot service project tackling their specific complex genomic challenge.
There will also be time for Q&A at the end.
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