Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJDB14963 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| DRR425575_1.fastq.gz | Fastqsanger.gz | |||
| DRR425575_2.fastq.gz | Fastqsanger.gz | |||
| DRR425576_1.fastq.gz | Fastqsanger.gz | |||
| DRR425576_2.fastq.gz | Fastqsanger.gz | |||
| DRR425577_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 12 |
Similar Datasets
Project description:The Tip60 (also known as Kat5) lysine acetyltransferase functions broadly as a transcriptional co-activator that acetylates histones. In contrast, Tip60 functions in embryonic stem cells (ESCs) both to silence genes that promote differentiation and to activate genes required for proliferation. The mechanism by which Tip60 functions as a repressor is unknown. Here we show that the class II histone deacetylase Hdac6 co-purifies with Tip60-p400 complex from ESCs and is necessary for complete silencing of most differentiation genes targeted by Tip60. In contrast to differentiated cells, where Hdac6 is mainly cytoplasmic and does not interact with Tip60, Hdac6 is largely nuclear in ESCs and neural stem cells (NSCs) and interacts with Tip60-p400 in both cell types. Hdac6 is enriched at promoters bound by Tip60-p400 in ESCs, but while Tip60 binds on both sides of transcription start sites (TSSs), Hdac6 binding overlaps with only the downstream Tip60 peak. Surprisingly, Hdac6 does not deacetylate histones at these sites, but rather is required for Tip60 binding. These data suggest that nuclear exclusion of Hdac6 during differentiation plays a major role in modulation of Tip60-p400 function. We determined the genome-wide localization of Tip60 and Hdac6 in mouse ES cells, and examined genomic binding profiles of Tip60 and Hdac6 upon indicated knockdown by ChIP-seq. We examined genomic binding profiles of p400 upon indicated knockdown by ChIP-seq.
2013-11-20 | E-GEOD-42209 | biostudies-arrayexpress
Project description:The Tip60 (also known as Kat5) lysine acetyltransferase functions broadly as a transcriptional co-activator that acetylates histones. In contrast, Tip60 functions in embryonic stem cells (ESCs) both to silence genes that promote differentiation and to activate genes required for proliferation. The mechanism by which Tip60 functions as a repressor is unknown. Here we show that the class II histone deacetylase Hdac6 co-purifies with Tip60-p400 complex from ESCs and is necessary for complete silencing of most differentiation genes targeted by Tip60. In contrast to differentiated cells, where Hdac6 is mainly cytoplasmic and does not interact with Tip60, Hdac6 is largely nuclear in ESCs and neural stem cells (NSCs) and interacts with Tip60-p400 in both cell types. Hdac6 is enriched at promoters bound by Tip60-p400 in ESCs, but while Tip60 binds on both sides of transcription start sites (TSSs), Hdac6 binding overlaps with only the downstream Tip60 peak. Surprisingly, Hdac6 does not deacetylate histones at these sites, but rather is required for Tip60 binding. These data suggest that nuclear exclusion of Hdac6 during differentiation plays a major role in modulation of Tip60-p400 function.
2013-11-20 | GSE42209 | GEO
Project description:Although histone-modifying enzymes are assumed to function in a manner dependent on their enzymatic activities, this assumption remains untested for many factors. Here we show the Tip60 (Kat5) lysine acetyltransferase (KAT), which is essential for embryonic stem cell (ESC) self-renewal and pre-implantation development, performs these functions independently of its KAT activity. Unlike ESCs depleted of Tip60, KAT–deficient ESCs exhibited minimal alterations in gene expression, chromatin accessibility at Tip60 binding sites, and self-renewal, thus demonstrating a critical KAT–independent role of Tip60 in ESC maintenance. In contrast, KAT–deficient ESCs exhibited impaired differentiation into mesoderm and endoderm, demonstrating a second, KAT–dependent function in differentiation. Consistent with this phenotype, KAT–deficient mouse embryos exhibited post-implantation developmental defects. These findings establish separable KAT–dependent and KAT–independent functions of Tip60 in ESCs and during embryonic development, raising the possibility of undiscovered catalysis-independent functions of additional KATs.
2017-04-06 | GSE85505 | GEO
Project description:In this study we examined the effects of loss of the MYST histone acetyltransferase TIP60 (KAT5) in mouse embryonic fibroblasts (MEFs), human embryonic kidney cells 293 (HEK293), and human osteosarcoma cells (U2OS) on cell proliferation, BrdU incorporation, cell cycle progression, apoptotic and other forms of cell death, DNA damage, histone acetylation at specific lysine residues and RNA expression levels. This dataset relates to MEFs. To assess the effects of loss of TIP60 on RNA levels, RNA-seq was performed on MEFs, where the TIP60 gene was deleted using Cre/loxP technology. Nuclear translocation was induced with 4-OH-tamoxifen treatment for 3 and 5 days to induce TIP60 gene deletion in the samples also containing the loxP sited in the Tip60 locus.
2022-07-22 | GSE208380 | GEO
Project description:Background Tip60 (KAT5) is the histone acetyltransferase (HAT) of the mammalian Tip60/NuA4 complex. While Tip60 is important for early mouse development and mouse embryonic stem cell (mESC) pluripotency, the function of Tip60 as reflected in a genome-wide context is not yet well understood. Results Gel filtration of nuclear mESCs extracts indicate incorporation of Tip60 into large molecular complexes and exclude the existence of large quantities of âfreeâ Tip60 within the nuclei of ESCs. Thus, monitoring of Tip60 binding to the genome should reflect the behaviour of Tip60-containing complexes. The genome-wide mapping of Tip60 binding in mESCs by chromatin immunoprecipitation (ChIP) coupled with high-throughput sequencing (ChIP-seq) shows that the Tip60 complex is present at promoter regions of predominantly active genes that are bound by RNA polymerase II (Pol II) and contain the H3K4me3 histone mark. The coactivator HAT complexes, Tip60- and Mof (KAT8)-containing (NSL and MSL), show a global overlap at promoters, whereas distinct binding profiles at enhancers suggest different regulatory functions of each essential HAT complex. Interestingly, Tip60 enrichment peaks at about 200 bp downstream of the transcription start sites suggesting a function for the Tip60 complexes in addition to histone acetylation. The comparison of genome-wide binding profiles of Tip60 and c-Myc, a somatic cell reprogramming factor that binds predominantly to active genes in mESCs, demonstrate that Tip60 and c-Myc co-bind at 50â60 % of their binding sites. We also show that the Tip60 complex binds to a subset of bivalent developmental genes and defines a set of mESC-specific enhancer as well as super-enhancer regions. Conclusions Our study suggests that the Tip60 complex functions as a global transcriptional co-activator at most active Pol II promoters, co-regulates the ESC-specific c-Myc network, important for ESC self-renewal and cell metabolism and acts at a subset of active distal regulatory elements, or super enhancers, in mESCs. Genome- wide binding of Tip60 co-activator complexes
2015-11-06 | E-GEOD-69671 | biostudies-arrayexpress
Project description:Lysine acetyltransferase Tip60 is required for hematopoietic stem cells maintenance
| PRJNA494174 | ENA
Project description:In this study we examined the effects of loss of the MYST histone acetyltransferase TIP60 (KAT5) in mouse embryonic fibroblasts (MEFs), human embryonic kidney cells 293 (HEK293), and human osteosarcoma cells (U2OS) on cell proliferation, BrdU incorporation, cell cycle progression, apoptotic and other forms of cell death, DNA damage, histone acetylation at specific lysine residues and RNA expression levels. This dataset relates to U2OS cells. To assess the effects of loss of TIP60 on RNA levels, RNA-seq was performed on U2OS cells, where the TIP60 gene was mutated by CRISPR/Cas9 technology using single guide RNA #1 (g1/C9), single guide RNA #2 (g2/C9), or guide-only controls (g1 or g2). The expression of the guide RNA was induced with doxycycline treatment for 4 days to induce TIP60 gene mutation in the samples also expressing the Cas9 enzyme.
2022-07-22 | GSE208382 | GEO
Project description:In this study we examined the effects of loss of the MYST histone acetyltransferase TIP60 (KAT5) in mouse embryonic fibroblasts (MEFs), human embryonic kidney cells 293 (HEK293), and human osteosarcoma cells (U2OS) on cell proliferation, BrdU incorporation, cell cycle progression, apoptotic and other forms of cell death, DNA damage, histone acetylation at specific lysine residues and RNA expression levels. This dataset relates to HEK293 cells. To assess the effects of loss of TIP60 on RNA levels, RNA-seq was performed on HEK293 cells, where the TIP60 gene was mutated by CRISPR/Cas9 technology using single guide RNA #1 (g1/C9), single guide RNA #2 (g2/C9), or guide-only controls (g1 or g2). The expression of the guide RNA was induced with doxycycline treatment for 3 days to induce TIP60 gene mutation in the samples also expressing the Cas9 enzyme.
2022-07-22 | GSE208379 | GEO
Project description:The activation of quiescent neural stem cells (qNSCs) in the dentate gyrus is required for lifelong neurogenesis. However, the mechanisms that promote the exit of neural stem cells (NSCs) from quiescence remain elusive. We demonstrate that the expression of plant homeodomain finger protein 2 (Phf2) activates the exit of postnatal mouse NSC from shallow quiescence. Loss of Phf2 prevents NSC activation and neurogenesis in postnatal 30 (P30) mice but does not decrease the label-retaining NSC pool, indicating that Phf2 is not required for the exit of NSC from quiescence. NSC-specific deletion of Phf2 modestly compromises embryonic mouse NSC proliferation without increasing apoptosis, indicating that Phf2 is crucial for embryonic development. Moreover, human cortical organoids reveal that Phf2 promotes NPC proliferation via a lysine demethylase-independent manner. Mechanistically, Phf2 directly binds to the cohesion complex via Rad21 and regulates the DNA replication in mouse NSC by associating with the cohesion complex releasing protein Wapl activity. Our study identifies the Phf2-cohesin complex mediated DNA replication for neural stem cell activation in a lysine demethylase-independent manner.
2024-03-01 | PXD040515 | JPOST Repository
Project description:In this study we examined the effects of loss of the MYST histone acetyltransferase TIP60 (KAT5) in mouse embryonic fibroblasts (MEFs), human embryonic kidney cells 293 (HEK293), and human osteosarcoma cells (U2OS) on cell proliferation, BrdU incorporation, cell cycle progression, apoptotic and other forms of cell death, DNA damage, histone acetylation at specific lysine residues and RNA expression levels. This dataset relates to U2OS cells. CUT&Tag was performed on replicate cultures and 100,000 cells per sample, 43,000 human cells each of U2OS with inducible single guide RNA #1 (g1/C9) or inducible single guide RNA #2 (g2/C9) expression and both with constitutive expression of Cas9 enzyme, either treated with doxycycline for 4 days (KO) or untreated (CTL) and 57,000 D. melanogaster cells as a spike-in, in total two replicates of TIP60 deleted cells and two replicates of control cells.
2022-07-22 | GSE208378 | GEO