Similar Datasets
Project description:RNAseq of hIPS cells at day 0 and hiPS-differentiated induced neuron at day 4 post neuronal induction
| PRJNA602890 | ENA
Project description:The ChIP-seq experiments using GFP antibody on ZNF417/ZNF587-GFP overexpressing 293T cells revealed that ZNF417/ZNF587 preferred to bind a PBS-Lys-containing HERVs. Further motif calling analysis showed that both ZNF417 and ZNF587 bind to HERVK PBS-resembled motif.
2021-12-01 | GSE156600 | GEO
Project description:To verify ZNF417 and ZNF587 knock out whether leads to HERV-K element reactivation, we performed RNA-seq on ZNF417/ZNF587 double knock out (DKO) K562 cell lines. We observed a dozen of genes were upregulated in KO cells, and some of them possessed PBS-Lys sites near their promoters that can be directly targeted by ZNF417 and ZNF587, such as MS4A clusters. We also measured the expression levels of repetitive elements in ZNF417 ZNF587 dKO cells, which exhibited only some ERVs reactivation indirectly.
2021-12-31 | GSE174242 | GEO
Project description:To verify Znf417 and Znf587 knock out whether leads to HERV-K element reactivation, we performed RNA-seq on Znf417/Znf587 double knock out (DKO) 293T cell lines. We did not find any significant changes in HERVK expression.
2021-12-01 | GSE156602 | GEO
Project description:RNAseq of human embryonic stem cells depleted for ZNF417 and ZNF587 or control cells
2020-01-24 | GSE144153 | GEO
Project description:In order to identify endogenous factors that modulate Aβ production, we performed a transcriptome analysis on neuronal cells derived from human induced pluripotent stem cells (hiPS) because these cells changed the Aβ production during neuronal differentiation. When the expression of APP and the ratio Aβ42/40 of the secreted proteins were measured at days 38, 45, and 52 during differentiation, both APP expression and the secretion of Aβ40 and Aβ42 at days 45 and 52 were significantly increased compared to those at day 38. Furthermore, the ratio of Aβ42/40 was dramatically reduced at days 45 and 52 compared to that at day 38. We hypothesized that transcriptional changes during the differentiation into neuronal cells may affect APP production and/or processing. To test this hypothesis, we performed microarray analyses using three independent neuronal cell cultures that were differentiated from each of three hiPS cells, namely 201B7, 253G4, and AD4F-1 (nine cell lines in total). Total RNA was prepared at three differentiation time points (days 38, 45, and 52) and subjected to an Affymetrix Gene Chip Human Exon 1.0 ST array. Compare between samples from 38-day cultures and samples from 45- and 52-day cultures.
2020-01-24 | E-MTAB-7852 | biostudies-arrayexpress
Project description:Expression data from hiPS lines after commitment towards mesenchymal lineage (hiPS-MSC) and expression data of mesenchymal lines (MSC), used as positive control of commitment. Following this, hiPS-MSC and MSC are seeded on scaffold to differentiate in a ligamentous (middle) and osseous (edges) part (post 21 days 3D differentiation) We used microarrays to validate efficient commitment of hiPS to generate hiPS-MSC and do whole transcriptome comparison of hiPS-MSC vs isolated MSC (positive control) and then compare the enhanced biological functions after differentiation of these cells on a scaffold
2016-12-20 | GSE58919 | GEO
Project description:Cells undergo a major epigenome reconfiguration when reprogrammed to human induced pluripotent stem cells (hiPS cells). However, the epigenomes of hiPS cells and human embryonic stem (hES) cells differ significantly, which affects hiPS cell function. These differences include epigenetic memory and aberrations that emerge during reprogramming, for which the mechanisms remain unknown. Here we characterized the persistence and emergence of these epigenetic differences by performing genome-wide DNA methylation profiling throughout primed and naive reprogramming of human somatic cells to hiPS cells. We found that reprogramming-induced epigenetic aberrations emerge midway through primed reprogramming, whereas DNA demethylation begins early in naive reprogramming. Using this knowledge, we developed a transient-naive-treatment (TNT) reprogramming strategy that emulates the embryonic epigenetic reset. We show that the epigenetic memory in hiPS cells is concentrated in cell of origin-dependent repressive chromatin marked by H3K9me3, lamin-B1 and aberrant CpH methylation. TNT reprogramming reconfigures these domains to a hES cell-like state and does not disrupt genomic imprinting. Using an isogenic system, we demonstrate that TNT reprogramming can correct the transposable element overexpression and differential gene expression seen in conventional hiPS cells, and that TNT-reprogrammed hiPS and hES cells show similar differentiation efficiencies. Moreover, TNT reprogramming enhances the differentiation of hiPS cells derived from multiple cell types. Thus, TNT reprogramming corrects epigenetic memory and aberrations, producing hiPS cells that are molecularly and functionally more similar to hES cells than conventional hiPS cells. We foresee TNT reprogramming becoming a new standard for biomedical and therapeutic applications and providing a novel system for studying epigenetic memory. This SuperSeries is composed of the SubSeries listed below.
2023-08-11 | GSE159297 | GEO
Project description:Cells undergo a major epigenome reconfiguration when reprogrammed to human induced pluripotent stem cells (hiPS cells). However, the epigenomes of hiPS cells and human embryonic stem (hES) cells differ significantly, which affects hiPS cell function. These differences include epigenetic memory and aberrations that emerge during reprogramming, for which the mechanisms remain unknown. Here we characterized the persistence and emergence of these epigenetic differences by performing genome-wide DNA methylation profiling throughout primed and naive reprogramming of human somatic cells to hiPS cells. We found that reprogramming-induced epigenetic aberrations emerge midway through primed reprogramming, whereas DNA demethylation begins early in naive reprogramming. Using this knowledge, we developed a transient-naive-treatment (TNT) reprogramming strategy that emulates the embryonic epigenetic reset. We show that the epigenetic memory in hiPS cells is concentrated in cell of origin-dependent repressive chromatin marked by H3K9me3, lamin-B1 and aberrant CpH methylation. TNT reprogramming reconfigures these domains to a hES cell-like state and does not disrupt genomic imprinting. Using an isogenic system, we demonstrate that TNT reprogramming can correct the transposable element overexpression and differential gene expression seen in conventional hiPS cells, and that TNT-reprogrammed hiPS and hES cells show similar differentiation efficiencies. Moreover, TNT reprogramming enhances the differentiation of hiPS cells derived from multiple cell types. Thus, TNT reprogramming corrects epigenetic memory and aberrations, producing hiPS cells that are molecularly and functionally more similar to hES cells than conventional hiPS cells. We foresee TNT reprogramming becoming a new standard for biomedical and therapeutic applications and providing a novel system for studying epigenetic memory.
2023-08-11 | GSE159296 | GEO
Project description:The role of Krüppel-associated box zinc finger proteins (KZFPs), the largest family of repressive transcription factors (TFs) of the human genome, in the pathogenesis of diffuse large B cell lymphoma has not been addressed so far. By correlating the expression of KZFPs with patient outcome, we delineated a subset of 18 co-expressed KZFPs associated to poor prognosis, higher copy number alterations (CNA), and the suppression of hallmarks gene sets linked to immune rejection. Among them, the depletion of the ZNF587-ZNF417 pair of TF paralogs drastically impaired the proliferation of both activated B cell (ABC) and germinal center B (GCB) DLBCL cell lines, by triggering replicative stress through the awakening of dormant replication origins and profound alterations of the heterochromatin landscape. ZNF587/417 knockdown profoundly altered the transcriptomic landscape of U2932 (ABC) and OCI-Ly7 (GCB) cells, rewiring gene expression networks associated with good prognosis and upregulating interferon (IFN)/inflammatory-related genes through activation of the cGAS-STING DNA sensing pathway. These cells showed signs of altered immunogenicity with an enhanced MHC class I surface expression and a reshuffling of their immunopeptidome. Our study provides evidence that the ZNF587-ZNF417 paralog pair may promote lymphoma growth, the acquisition of genetic diversity, and its immune evasion by preventing excessive replicative stress. This suggests that these TFs participate in the epigenetic memory of lymphoma cells, thus highlighting the critical role of constitutive heterochromatin in maintaining the identity of poor-prognosis DLBCL.
2024-03-15 | PXD040500 | Pride