Immunoseq: the identification of functionally relevant variants through targeted capture and sequencing of active regulatory regions in human immune cells
2016 (English)In: BMC Medical Genomics, ISSN 1755-8794, E-ISSN 1755-8794, Vol. 9, 59Article in journal (Refereed) Published
Background: The observation that the genetic variants identified in genome-wide association studies (GWAS) frequently lie in non-coding regions of the genome that contain cis-regulatory elements suggests that altered gene expression underlies the development of many complex traits. In order to efficiently make a comprehensive assessment of the impact of non-coding genetic variation in immune related diseases we emulated the whole-exome sequencing paradigm and developed a custom capture panel for the known DNase I hypersensitive site (DHS) in immune cells - "Immunoseq". Results: We performed Immunoseq in 30 healthy individuals where we had existing transcriptome data from T cells. We identified a large number of novel non-coding variants in these samples. Relying on allele specific expression measurements, we also showed that our selected capture regions are enriched for functional variants that have an impact on differential allelic gene expression. The results from a replication set with 180 samples confirmed our observations. Conclusions: We show that Immunoseq is a powerful approach to detect novel rare variants in regulatory regions. We also demonstrate that these novel variants have a potential functional role in immune cells.
Place, publisher, year, edition, pages
2016. Vol. 9, 59
Rare variants, Immune disease, Gene expression, Next-generation sequencing, Capture
IdentifiersURN: urn:nbn:se:uu:diva-305458DOI: 10.1186/s12920-016-0220-7ISI: 000383129900001PubMedID: 27624058OAI: oai:DiVA.org:uu-305458DiVA: diva2:1038658
FunderSwedish Research Council, DO283001Knut and Alice Wallenberg Foundation