Identification of Extrachromosomal Circular Forms of Active Transposable Elements Using Mobilome-Seq

Area of Science:

• Genomics
• Molecular Biology
• Genetics

Background:

• Active transposable elements (TEs) create insertion polymorphisms detectable via genome resequencing.
• Existing genome resequencing methods face challenges with large genomes and detecting somatic insertions.

Purpose of the Study:

• To present a new method for detecting and characterizing active transposable elements (TEs).
• To overcome limitations of current TEs detection methods in plants and animals.

Main Methods:

• The study introduces Mobilome-seq, a technique focusing on extrachromosomal circular DNA (eccDNA) forms of TEs.
• Mobilome-seq involves selective amplification and sequencing of eccDNAs.
• The method utilizes linear DNA digestion followed by rolling circle amplification of circular DNA.

Main Results:

• Mobilome-seq successfully identifies active DNA transposons and retrotransposons.
• The technique is applicable to any plant or animal tissue.

Conclusions:

• Mobilome-seq offers a powerful new approach for studying active transposable elements.
• This method enhances the detection of TEs, particularly in challenging genomic contexts like large genomes or somatic tissues.