Next-generation Sequencing-based Detection of Germline L1-mediated Transductions
Overview
Authors
Affiliations
Background: While active LINE-1 (L1) elements possess the ability to mobilize flanking sequences to different genomic loci through a process termed transduction influencing genomic content and structure, an approach for detecting polymorphic germline non-reference transductions in massively-parallel sequencing data has been lacking.
Results: Here we present the computational approach TIGER (Transduction Inference in GERmline genomes), enabling the discovery of non-reference L1-mediated transductions by combining L1 discovery with detection of unique insertion sequences and detailed characterization of insertion sites. We employed TIGER to characterize polymorphic transductions in fifteen genomes from non-human primate species (chimpanzee, orangutan and rhesus macaque), as well as in a human genome. We achieved high accuracy as confirmed by PCR and two single molecule DNA sequencing techniques, and uncovered differences in relative rates of transduction between primate species.
Conclusions: By enabling detection of polymorphic transductions, TIGER makes this form of relevant structural variation amenable for population and personal genome analysis.
Diseases of the nERVous system: retrotransposon activity in neurodegenerative disease.
Tam O, Ostrow L, Gale Hammell M Mob DNA. 2019; 10:32.
PMID: 31372185 PMC: 6659213. DOI: 10.1186/s13100-019-0176-1.
iMGEins: detecting novel mobile genetic elements inserted in individual genomes.
Bae J, Lee K, Islam M, Yim H, Park H, Rho M BMC Genomics. 2018; 19(1):944.
PMID: 30563451 PMC: 6299635. DOI: 10.1186/s12864-018-5290-9.
L1 retrotransposition in the soma: a field jumping ahead.
Faulkner G, Billon V Mob DNA. 2018; 9:22.
PMID: 30002735 PMC: 6035798. DOI: 10.1186/s13100-018-0128-1.
Goncalves A, Oliveira J, Coelho T, Taipa R, Melo-Pires M, Sousa M Genes (Basel). 2017; 8(10).
PMID: 28972564 PMC: 5664103. DOI: 10.3390/genes8100253.