Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE122856 | GEO | 2018/12/18

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Functional evaluation of transposable elements as enhancers in mouse embryonic and trophoblast stem cells.

Project description:Transposable elements (TEs) are thought to have helped establish gene regulatory networks. Both the embryonic and extraembryonic lineages of the early mouse embryo have seemingly co-opted TEs as enhancers, but there is little evidence that they play significant roles in gene regulation. Here we tested a set of long terminal repeat TE families for roles as enhancers in mouse embryonic and trophoblast stem cells. Epigenomic and transcriptomic data suggested that a large number of TEs helped to establish tissue-specific gene expression programmes. Genetic editing of individual TEs confirmed a subset of these regulatory relationships. However, a wider survey via CRISPR interference of RLTR13D6 elements in embryonic stem cells revealed that only a minority play significant roles in gene regulation. Our results suggest that a subset of TEs are important for gene regulation in early mouse development, and highlight the importance of functional experiments when evaluating gene regulatory roles of TEs.

| S-EPMC6544436 | biostudies-literature

Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells [ChIP-seq]

Project description:Transposable elements (TEs) appear to have contributed to the evolution of tissue-specific gene regulatory networks in contexts such as early development, pregnancy and innate immunity, amongst others. In mouse embryonic stem cells (ESCs), TE families such as RLTR13D6 bind key pluripotency-associated transcription factors and are enriched for histone marks that are characteristic of distal enhancers. However, it remains unclear to what extent such lineage-specific TEs are important for maintaining gene expression programmes during preimplantation development. Here we have tested the gene regulatory function of RLTR13D6 elements in ESCs using epigenetic editing approaches. Whilst we identify some elements that are important to drive gene expression, these constitute a minority of all the putative TE-derived enhancers identified through epigenomic analyses, highlighting the importance of functional tests when assessing the contribution of TEs to gene regulatory networks.

2018-12-18 | GSE122855 | GEO

Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells [RNA-seq]

2018-12-18 | GSE122854 | GEO

Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells

Project description:Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells

| PRJNA506704 | ENA

Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells [ChIP-seq]

Project description:Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells [ChIP-seq]

| PRJNA506706 | ENA

Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells [RNA-seq]

Project description:Functional evaluation of transposable elements as transcriptional enhancers in mouse embryonic and trophoblast stem cells [RNA-seq]

| PRJNA506708 | ENA

Evolution of mouse circadian enhancers from transposable elements.

Project description:BackgroundTransposable elements are increasingly recognized as a source of cis-regulatory variation. Previous studies have revealed that transposons are often bound by transcription factors and some have been co-opted into functional enhancers regulating host gene expression. However, the process by which transposons mature into complex regulatory elements, like enhancers, remains poorly understood. To investigate this process, we examined the contribution of transposons to the cis-regulatory network controlling circadian gene expression in the mouse liver, a well-characterized network serving an important physiological function.ResultsChIP-seq analyses reveal that transposons and other repeats contribute ~ 14% of the binding sites for core circadian regulators (CRs) including BMAL1, CLOCK, PER1/2, and CRY1/2, in the mouse liver. RSINE1, an abundant murine-specific SINE, is the only transposon family enriched for CR binding sites across all datasets. Sequence analyses and reporter assays reveal that the circadian regulatory activity of RSINE1 stems from the presence of imperfect CR binding motifs in the ancestral RSINE1 sequence. These motifs matured into canonical motifs through point mutations after transposition. Furthermore, maturation occurred preferentially within elements inserted in the proximity of ancestral CR binding sites. RSINE1 also acquired motifs that recruit nuclear receptors known to cooperate with CRs to regulate circadian gene expression specifically in the liver.ConclusionsOur results suggest that the birth of enhancers from transposons is predicated both by the sequence of the transposon and by the cis-regulatory landscape surrounding their genomic integration site.

| S-EPMC8240256 | biostudies-literature

Enhancers in embryonic stem cells are enriched for transposable elements and genetic variations associated with cancers.

Project description:Using an enhancer-associated epigenetic signature, we made genome-wide predictions of transcriptional enhancers in human B and T lymphocytes and embryonic stem cells (ES cells). We validated and characterized the predicted enhancers using four types of information, including overlap with other genomic marks for enhancers; association with cell-type-specific genes; enrichment of cell-type-specific transcription factor binding sites; and genetic polymorphisms in predicted enhancers. We find that enhancers from ES cells, but not B or T cells, are significantly enriched for DNA sequences derived from transposable elements. This may be due to the generally relaxed repressive epigenetic state and increased activity of transposable elements in ES cells. We demonstrate that the wealth of new enhancer sequences discerned here provides an invaluable resource for the functional annotation of gene-distal single nucleotide polymorphisms identified through expression quantitative trait loci and genome-wide association studies analyses. Notably, we find GWAS SNPs associated with various cancers are enriched in ES cell enhancers. In comparison, GWAS SNPs associated with diseases due to immune dysregulation are enriched in B and T cell enhancers.

| S-EPMC3177211 | biostudies-literature

Striking a balance: regulation of transposable elements by Zfp281 and Mll2 in mouse embryonic stem cells.

Project description:Transposable elements (TEs) compose about 40% of the murine genome. Retrotransposition of active TEs such as LINE-1 (L1) tremendously impacts genetic diversification and genome stability. Therefore, transcription and transposition activities of retrotransposons are tightly controlled. Here, we show that the Krüppel-like zinc finger protein Zfp281 directly binds and suppresses a subset of retrotransposons, including the active young L1 repeat elements, in mouse embryonic stem (ES) cells. In addition, we find that Zfp281-regulated L1s are highly enriched for 5-hydroxymethylcytosine (5hmC) and H3K4me3. The COMPASS-like H3K4 methyltransferase Mll2 is the major H3K4me3 methylase at the Zfp281-regulated L1s and required for their proper expression. Our studies also reveal that Zfp281 functions partially through recruiting the L1 regulators DNA hydroxymethylase Tet1 and Sin3A, and restricting Mll2 at these active L1s, leading to their balanced expression. In summary, our data indicate an instrumental role of Zfp281 in suppressing the young active L1s in mouse ES cells.

| S-EPMC5716208 | biostudies-literature

Transposable elements are regulated by context-specific patterns of chromatin marks in mouse embryonic stem cells.

Project description:The majority of mammalian genomes are devoted to transposable elements (TEs). Whilst TEs are increasingly recognized for their important biological functions, they are a potential danger to genomic stability and are carefully regulated by the epigenetic system. However, the full complexity of this regulatory system is not understood. Here, using mouse embryonic stem cells, we show that TEs are suppressed by heterochromatic marks like H3K9me3, and are also labelled by all major types of chromatin modification in complex patterns, including bivalent activatory and repressive marks. We identified 29 epigenetic modifiers that significantly deregulated at least one type of TE. The loss of Setdb1, Ncor2, Rnf2, Kat5, Prmt5, Uhrf1, and Rrp8 caused widespread changes in TE expression and chromatin accessibility. These effects were context-specific, with different chromatin modifiers regulating the expression and chromatin accessibility of specific subsets of TEs. Our work reveals the complex patterns of epigenetic regulation of TEs.

| S-EPMC6318327 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data