Abstract：
:Transposable elements are emerging as an important source of cis-acting regulatory sequences and epigenetic marks that could influence gene expression. However, few studies have dissected the role of specific transposable element insertions on epigenetic gene regulation. Bari-Jheh is a natural transposon that mediates resistance to oxidative stress by adding cis-regulatory sequences that affect expression of nearby genes. In this work, we integrated publicly available ChIP-seq and piRNA data with chromatin immunoprecipitation experiments to get a more comprehensive picture of Bari-Jheh molecular effects. We showed that Bari-Jheh was enriched for H3K9me3 in nonstress conditions, and for H3K9me3, H3K4me3 and H3K27me3 in oxidative stress conditions, which is consistent with expression changes in adjacent genes. We further showed that under oxidative stress conditions, H3K4me3 and H3K9me3 spread to the promoter region of Jheh1 gene. Finally, another insertion of the Bari1 family was associated with increased H3K27me3 in oxidative stress conditions suggesting that Bari1 histone marks are copy-specific. We concluded that besides adding cis-regulatory sequences, Bari-Jheh influences gene expression by affecting the local chromatin state.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Guio L,Vieira C,González Jdoi
10.1038/s41598-018-30491-wsubject
Has Abstractpub_date
2018-08-15 00:00:00pages
12197issue
1issn
2045-2322pii
10.1038/s41598-018-30491-wjournal_volume
8pub_type
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