ELL3 promotes stem cell native to primed transition through LINE-based enhancers [ATAC-seq]
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE225176 | GEO | 2023/06/20
REPOSITORIES: GEO
Similar Datasets
Project description:Long interspersed nuclear elements-1 (LINE-1) are the clade of retrotransposons still possessing autonomous mobility in mammals. LINE-1 transcription contributed to global chromatin opening in mouse early embryos.Whether LINE-1 element plays a direct role in the local regulation of its nearby genes remains largely obscure.ELL3 occupies and represses the youngest LINE-1 family members L1Md_T and L1Md_Gf in naïve mouse ES cells.We found that the enhancer function of the evolutionally young LINE-1s, and suggests that ELL3 act as a key drivers of the naïve-primed transition through regulating the young LINE-1 based enhancers.
2023-06-20 | GSE208226 | GEO
Project description:Long interspersed nuclear elements-1 (LINE-1) are the clade of retrotransposons still possessing autonomous mobility in mammals. LINE-1 transcription contributed to global chromatin opening in mouse early embryos.Whether LINE-1 element plays a direct role in the local regulation of its nearby genes remains largely obscure.ELL3 occupies and represses the youngest LINE-1 family members L1Md_T and L1Md_Gf in naïve mouse ES cells.We found that the enhancer function of the evolutionally young LINE-1s, and suggests that ELL3 act as a key drivers of the naïve-primed transition through regulating the young LINE-1 based enhancers.
2023-06-20 | GSE207397 | GEO
Project description:Long interspersed nuclear elements-1 (LINE-1) are the clade of retrotransposons still possessing autonomous mobility in mammals. LINE-1 transcription contributed to global chromatin opening in mouse early embryos. Whether LINE-1 element plays a direct role in the local regulation of its nearby genes remains largely obscure. ELL3 occupies and represses the youngest LINE-1 family members L1Md_T and L1Md_Gf in naïve mouse ES cells. We found that the enhancer function of the evolutionally young LINE-1s, and suggests that ELL3 act as a key drivers of the naïve-primed transition through regulating the young LINE-1 based enhancers.
2023-06-20 | GSE229447 | GEO
Project description:Ell3 is a RNA polymerase II transcription elongation factor that is enriched in testis. The C-terminal domain of Ell3 shows strong similarities to that of Ell (eleven-nineteen lysine-rich leukemia gene), which acts as a negative regulator of p53 and regulates cell proliferation and survival. Recent studies in our laboratory showed that Ell3 induces the differentiation of mouse embryonic stem cells by protecting differentiating cells from apoptosis via the promotion of p53 degradation. In this study, we evaluated the function of Ell3 in breast cancer cell lines. MCF7 cell lines overexpressing Ell3 were used to examine cell proliferation and cancer stem cell properties. Ectopic expression of Ell3 in breast cancer cell lines induces proliferation and 5-FU resistance. In addition, Ell3 expression increases the cancer stem cell population, which is characterized by CD44 (+) or ALDH1 (+) cells. Mammosphere-forming potential and migration ability were also increased upon Ell3 expression in breast cancer cell lines. Through biochemical and molecular biological analyses, we showed that Ell3 regulates proliferation, cancer stem cell properties and drug resistance in breast cancer cell lines partly through the MEK-extracellular signal-regulated kinase signaling pathway. Murine xenograft experiments showed that Ell3 expression promotes tumorigenesis in vivo. The transcription elongation factor Ell3 induces chemosensitization of MCF7 cells to the chemotherapeutic agent cis-diamminedichloroplatinum (II) (CDDP) by stabilizing p53. Interestingly, Ell3 induced p53 stabilization in response to CDDP by promoting binding of p53 to NADH quinoneoxidoreductase 1 (NQO1), which is linked to an ubiquitin-independent degradation pathway, as well as by suppressing a MDM2 mediated ubiquitin-dependent degradation pathway. Furthermore, Ell3 enhanced interleukin-20 (IL-20) expression leading to the activation of the ERK1/2 signaling pathway. By analyzing the suppressive effects of IL-20 and ERK signaling in the Ell3 expressing MCF7 cells, we confirmed that the IL-20 mediated ERK1/2 signaling pathway is the main cause of p53 stabilization after CDDP exposure in MCF7 cells. Ell3-overexpressing breast cancer cell lines were established using the chromosomal integration of an Ell3 expression plasmid, which was constructed by cloning PCR-amplified Ell3 cDNA into pcDNA3.1 vectors (Invitrogen, Carlsbad, CA; https://www.lifetechnologies.com). Three independent Ell3 overexpressing cell lines were generated. The gene expression profiles of wild type MCF7 and Ell3 overexpressing cell line were compared using Affymetrix PrimeView arrays.
2015-11-25 | E-GEOD-63612 | biostudies-arrayexpress
Project description:Ell3 is a RNA polymerase II transcription elongation factor that is enriched in testis. The C-terminal domain of Ell3 shows strong similarities to that of Ell (eleven-nineteen lysine-rich leukemia gene), which acts as a negative regulator of p53 and regulates cell proliferation and survival. Recent studies in our laboratory showed that Ell3 induces the differentiation of mouse embryonic stem cells by protecting differentiating cells from apoptosis via the promotion of p53 degradation. In this study, we evaluated the function of Ell3 in breast cancer cell lines. MCF7 cell lines overexpressing Ell3 were used to examine cell proliferation and cancer stem cell properties. Ectopic expression of Ell3 in breast cancer cell lines induces proliferation and 5-FU resistance. In addition, Ell3 expression increases the cancer stem cell population, which is characterized by CD44 (+) or ALDH1 (+) cells. Mammosphere-forming potential and migration ability were also increased upon Ell3 expression in breast cancer cell lines. Through biochemical and molecular biological analyses, we showed that Ell3 regulates proliferation, cancer stem cell properties and drug resistance in breast cancer cell lines partly through the MEK-extracellular signal-regulated kinase signaling pathway. Murine xenograft experiments showed that Ell3 expression promotes tumorigenesis in vivo. The transcription elongation factor Ell3 induces chemosensitization of MCF7 cells to the chemotherapeutic agent cis-diamminedichloroplatinum (II) (CDDP) by stabilizing p53. Interestingly, Ell3 induced p53 stabilization in response to CDDP by promoting binding of p53 to NADH quinoneoxidoreductase 1 (NQO1), which is linked to an ubiquitin-independent degradation pathway, as well as by suppressing a MDM2 mediated ubiquitin-dependent degradation pathway. Furthermore, Ell3 enhanced interleukin-20 (IL-20) expression leading to the activation of the ERK1/2 signaling pathway. By analyzing the suppressive effects of IL-20 and ERK signaling in the Ell3 expressing MCF7 cells, we confirmed that the IL-20 mediated ERK1/2 signaling pathway is the main cause of p53 stabilization after CDDP exposure in MCF7 cells.
2015-11-25 | GSE63612 | GEO
Project description:Enhancers play a central role in precisely regulating the spatiotemporal expression of developmentally regulated genes. The molecular mechanisms and factors required for controlling the inactive or poised enhancers and their function in future gene activation remain elusive. Here, we have identified that Ell3, a member of the Ell (Eleven-nineteen Lysine-rich Leukemia gene) family of RNA Pol II elongation factors, predominately occupies active and inactive enhancers of many developmentally regulated genes in mouse embryonic stem cells. Ell3 localizes to active enhancers of key stem cell renewal genes, but is not required for maintaining the undifferentiated state. Instead, Ell3 binding to inactive or poised enhancers is essential for marking them for stem cell specification through regulating the activation of key lineage-specific genes throughout differentiation. Ell3M-bM-^@M-^Ys association with enhancers is required for setting up proper Pol II occupancy at the proximal promoter regions of neighboring genes. This functional interaction between Ell3 and proximal promoter Pol II is dependent on cohesin. The depletion of cohesin subunits removes Ell3 from the enhancers and results in reduction in the levels of promoter proximally paused Pol II. Our study demonstrates that Ell3 is required for stem cell fate specification through regulating Pol II pausing on key developmental genes in the undifferentiated state and for their proper expression during differentiation. ChIP-seq of Ell3 in mES cells. ChIP-seq of Pol II in mES cells after Ell3 shRNA and non-targeting shRNA. RNA-seq of mES cells after Ell3 shRNA and non-targeting shRNA. RNA-seq of mouse embryoid bodies at day five after non-targeting shRNA.
2012-12-30 | E-GEOD-38148 | biostudies-arrayexpress
Project description:Enhancers play a central role in precisely regulating the spatiotemporal expression of developmentally regulated genes. The molecular mechanisms and factors required for controlling the inactive or poised enhancers and their function in future gene activation remain elusive. Here, we have identified that Ell3, a member of the Ell (Eleven-nineteen Lysine-rich Leukemia gene) family of RNA Pol II elongation factors, predominately occupies active and inactive enhancers of many developmentally regulated genes in mouse embryonic stem cells. Ell3 localizes to active enhancers of key stem cell renewal genes, but is not required for maintaining the undifferentiated state. Instead, Ell3 binding to inactive or poised enhancers is essential for marking them for stem cell specification through regulating the activation of key lineage-specific genes throughout differentiation. Ell3’s association with enhancers is required for setting up proper Pol II occupancy at the proximal promoter regions of neighboring genes. This functional interaction between Ell3 and proximal promoter Pol II is dependent on cohesin. The depletion of cohesin subunits removes Ell3 from the enhancers and results in reduction in the levels of promoter proximally paused Pol II. Our study demonstrates that Ell3 is required for stem cell fate specification through regulating Pol II pausing on key developmental genes in the undifferentiated state and for their proper expression during differentiation.
2012-12-30 | GSE38148 | GEO
Project description:To identify novel targets of the transcriptional repressor that functions to extinguish the B cell phenotype during terminal plasma cell differentiation, we assessed PRDM1 bound sequences through ChIP-Seq. We prepared PRDM1-enriched chromatin from two PRDM1 positive mutiple myeloma cell lines, U266 and NCI-H929. At least 5 PRDM1- or IgG enrichments were performed per cell line and pooled into the two respective conditions per cell line. The U226 and NCI-H929 revealed respectively, 574 and 2887 association peaks were indentified per cell line. Both cell lines displayed an intense peak at the ELL3 loci, suggesting PRDM1 association. This was validated by ChIP followed by qPCR, confirming PRDM1 association.
2017-12-01 | GSE102360 | GEO
Project description:Knockdown of LINE-1s induced neural differentiation, therefore the project seeks molecular underlying mechanims after applying shRNs against LINE-1s in mouse neural progenitor cells
2023-12-31 | GSE217643 | GEO
Project description:Expression data of Ell3 overexpressing MCF7 cell line
| PRJNA268445 | ENA