Filters
Technology
Platform
GSE28500
Mus musculus
5 Downloadable Samples
Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Genome-wide regulation of 5hmC, 5mC, and gene expression by Tet1 hydroxylase in mouse embryonic stem cells.
Sample Metadata Fields
Specimen part, Cell line, Treatment
View Samples- Mus musculus
- 5 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
DNA methylation of C5-cytosine (5mC) in the mammalian genome is a key epigenetic event that is critical for various cellular processes. However, how the genome-wide 5mC pattern is dynamically regulated remains a fundamental question in epigenetic biology. The TET family of 5mC hydroxylases, which convert 5mC to 5-hydroxymethylcytosine (5hmC), have provided a new potential mechanism for the dynamic regulation of DNA methylation. The extent to which individual Tet family members contribute to the genome-wide 5mC and 5hmC patterns and associated gene network remains largely unknown. Here we report genome-wide mapping of Tet1 and 5hmC in mESCs and reveal a mechanism of action by which Tet1 controls 5hmC and 5mC levels in mESCs. In combination with microarray and mRNA-seq expression profiling, we identify a comprehensive yet intricate gene network influenced by Tet1. We propose a model whereby Tet1 controls DNA methylation both by binding to CpG-rich regions to prevent unwanted DNA methyltransferase activity, and by converting the existing 5mC to 5hmC through its enzymatic activity. This Tet1-mediated antagonism of CpG methylation imparts differential maintenance of DNA methylation status at Tet1 target loci, thereby providing a new regulatory mechanism for establishing the epigenetic landscape of mESCs, which ultimately contributes to mESC differentiation and the onset of embryonic development.
Publication Title
Genome-wide regulation of 5hmC, 5mC, and gene expression by Tet1 hydroxylase in mouse embryonic stem cells.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Homo sapiens
- 3 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Histone methylation occurs on both lysine and arginine residues and its dynamic regulation plays a critical role in chromatin biology. Here we identify the UHRF1 PHD domain (PHDUHRF1), an important regulator of DNA CpG methylation, as an unanticipated histone H3 unmodified arginine 2 (H3R2)-recognition modality. This conclusion is based on binding studies and co-crystal structures of the PHDUHRF1 bound to histone H3 peptides, where the guanidinium group of unmodified R2 forms an extensive intermolecular hydrogen bond network, with methylation of H3R2, but not H3K4 or H3K9, disrupting complex formation. We have identified direct target genes of UHRF1 from microarray and ChIP studies. Importantly, we show that UHRF1s ability to repress its direct target gene expression is dependent on PHDUHRF1 binding to unmodified H3R2, thereby demonstrating the functional importance of this recognition event and supporting the potential for crosstalk between histone arginine methylation and UHRF1 function.
Publication Title
PHD finger recognition of unmodified histone H3R2 links UHRF1 to regulation of euchromatic gene expression.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Rattus norvegicus
- 27 Downloadable Samples
- Affymetrix Rat Expression 230A Array (rae230a)
Description
Aging progress is distinctly characterized by systematic and progressive decline of physiological functions with increasing age in virtually all tissues or organs. Addressing the patterns of molecular changes in different tissues and how different tissues interact with each other during aging are an important question in aging.
Publication Title
The spatial association of gene expression evolves from synchrony to asynchrony and stochasticity with age.
Sample Metadata Fields
Age, Specimen part
View Samples- Homo sapiens
- 197 Downloadable Samples
- Affymetrix Human Transcriptome Array 2.0 (hta20)
Description
To develop and validate novel multigene signatures to facilitate individualized treatment of TNBC patients By integrating expression profiles of messenger RNAs (mRNAs) and long non-coding RNAs (lncRNAs).
Publication Title
Comprehensive Transcriptome Profiling Reveals Multigene Signatures in Triple-Negative Breast Cancer.
Sample Metadata Fields
Sex, Specimen part, Disease stage
View Samples- Homo sapiens
- 81 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Microarray analyses for the identification of differences in gene expression patterns have increased our understanding of the molecular genetic events in colorectal cancer.
Publication Title
A molecular signature for the prediction of recurrence in colorectal cancer.
Sample Metadata Fields
Sex
View Samples- Homo sapiens
- 41 Downloadable Samples
- Affymetrix Human Transcriptome Array 2.0 (hta20)
Description
With stringent filtering criteria (fold change>2, p<0.001 and False Discovery Rate (FDR) <0.01), we identified 133 lncRNAs and 370 mRNAs that were the most highly differentially expressed. Of all the lncRNAs, 61 were upregulated, and 72 were downregulated.
Publication Title
No associated publication
Sample Metadata Fields
Sex, Specimen part, Disease, Disease stage
View Samples- Homo sapiens
- 4 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st)
Description
Although many protein-coding genes have been identified to be aberrantly expressed in gallbladder cancer, the mechanism that account for the development and progression of gallbladder cancer remains unclear. In recent years, long noncoding RNAs have been shown to play vital roles in mammalian cell biology. In this study, we found that a small number of lncRNAs that are aberrantly expressed.
Publication Title
Long Noncoding RNA GCASPC, a Target of miR-17-3p, Negatively Regulates Pyruvate Carboxylase-Dependent Cell Proliferation in Gallbladder Cancer.
Sample Metadata Fields
Specimen part
View Samples- Rattus norvegicus
- 4 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
MicroRNA-181c negatively regulates the inflammatory response in oxygen-glucose-deprived microglia by targeting Toll-like receptor 4.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 2 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Cytidine Deaminase Axis Modulated by miR-484 Differentially Regulates Cell Proliferation and Chemoresistance in Breast Cancer.
Sample Metadata Fields
Disease, Cell line
View Samples