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Characterization of full-length LINE-1 insertions in 154 genomes
Journal article   Open access   Peer reviewed

Characterization of full-length LINE-1 insertions in 154 genomes

Jessica S. Wong, Tanaya Jadhav, Eleanor Young, Yilin Wang and Ming Xiao
Genomics (San Diego, Calif.), v 113(6), pp 3804-3810
Nov 2021
PMID: 34534648
url
https://doi.org/10.1016/j.ygeno.2021.09.011View
Accepted (AM)Open Access (License Unspecified) Open

Abstract

Genomics LINE-1
Long interspersed nuclear elements (LINEs) are retrotransposons that contribute to genetic variation in the human genome. LINE-1 elements in larger-scale studies are challenging to identify using sequencing technologies due to cost and scalability. We developed an approach using optical mapping for detection of full-length LINE-1 insertions and 10× sequencing for confirmation. We found 51 true positive full-length LINE-1 insertions, of which 4 are novel insertions, in NA12878. Repeating our analysis on a larger sample set representing 26 populations, we identified 329 full-length LINE-1 elements, of which 123 are novel. 24.8% of these 329 LINE-1 insertions were shared amongst all 5 superpopulations (AFR, AMR, EUR, EAS, SAS). The African superpopulation has a higher percentage of population-specific LINE-1 insertions than any other superpopulation. These data indicate that our approach can provide high-speed, cost-effective, and increased accuracy for LINE-1 detection. These data also provide an insight into variations of LINE-1 elements between different populations. •Method of detecting full-length LINE1 insertions by whole-genome optical mapping in conjunction with 10× genomics sequencing.•Identified 329 full-length LINE-1 insertions (123 novel) in 154 genomes and their distribution across 26 populations.•Population analysis shows a higher percentage of population-specific LINE-1 s present in the African superpopulation.

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Web of Science research areas
Biotechnology & Applied Microbiology
Genetics & Heredity
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