Nanopore Sequencing to Identify Transposable Element Insertions and Their Epigenetic Modifications

Area of Science:

• Genomics and Molecular Biology
• Epigenetics and Transposable Elements

Background:

• High-throughput genomic assays have transformed transposable element (TE) research over the last two decades.
• Short-read DNA sequencing has been the primary technology, but long-read sequencing is emerging as a powerful alternative.

Purpose of the Study:

• To provide detailed guidelines for using Oxford Nanopore Technologies (ONT) sequencing for TE analysis.
• To demonstrate the identification of polymorphic TE insertions and the profiling of TE epigenetic landscapes.
• To offer insights into potential challenges and solutions for implementing ONT sequencing in TE research.

Main Methods:

• Implementation of Oxford Nanopore Technologies (ONT) sequencing for genomic analysis.
• Locus-specific approaches to identify individual TE insertions.
• Genome-wide profiling of TE activity and epigenetic landscapes, exemplified by human Long Interspersed Element-1 (LINE-1, L1).

Main Results:

• ONT sequencing allows for locus-specific identification of polymorphic TE insertions.
• The technology enables comprehensive profiling of TE epigenetic landscapes.
• Detailed procedures, visualization techniques, and potential pitfalls are outlined for practical application.

Conclusions:

• Long-read sequencing with ONT offers advanced capabilities for studying TE insertions and their regulation.
• ONT sequencing is poised to become a foundational technology for transposable element research.
• This approach facilitates a deeper understanding of TE dynamics and their impact on genomes.