Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

A molecular mechanism for compartmentalization and silencing of chromatin domains at the nuclear lamina [Tiling Array]

ABSTRACT: These are the tiling array data for the experiments describing LADs on murine chromosomes 5, 12, and 15 by Dam-ID, as determined by LMNB and EMD Dam tagging and detection experiments Supplemental Bed file contains GADA algorithm calls for genomic regions of chromosomes 5, 12 and 15 (-1= no lad, high confidence, 0=indeterminate, 1=LAD, high confidence)

ORGANISM(S): Mus musculus

PROVIDER: GSE35777 | GEO | 2012/02/14

SECONDARY ACCESSION(S): PRJNA155901

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

DamID (LmnB1/Dam) Log2 ratios of C57Bl/6 fibroblasts and RAG2-/- pro-B cells.

Project description:Comparison of DamID profiles and LAD patterning across cell types reveals regions of variable LADs LmnB1 interactions at the nuclear periphery of C57Bl/6 pro-B cells and fibroblasts were identified by DamID in duplicate for both pro-B and fibroblasts (4 samples total). For each sample, Dam-LmnB1/Dam-only Log2 ratios of chromosomes 11 and 12 were calculated, lifted over to mm9, duplicates were normalized and averaged together.

2014-12-16 | E-GEOD-56990 | biostudies-arrayexpress

The insulator protein SU(HW) modulates nuclear lamina interactions of the Drosophila genome: DamID

Project description:Specific interactions of the genome with the nuclear lamina (NL) are thought to assist chromosome folding inside the nucleus and to contribute to the regulation of gene expression. High-resolution mapping has recently identified hundreds of large, sharply defined lamina-associated domains (LADs) in the human genome, and suggested that the insulator protein CTCF may help to demarcate these domains. Here, we report the detailed structure of LADs in Drosophila cells, and investigate the putative roles of five insulator proteins in LAD organization. We found that of these five proteins, only SU(HW) binds preferentially at LAD borders and at specific positions inside LADs, while GAF, CTCF, BEAF-32 and DWG are mostly absent from these regions. By knockdown and overexpression studies we demonstrate that SU(HW) weakens LAD – NL interactions by a local antagonistic effect. Our results provide insights into the evolution of LAD organization and reveal a role for SU(HW) in the regulation of genome – NL interactions. DamID experiments for Lamin, CTCF, SU(HW), GAF, DWG, and BEAF-32, and for Lamin after overexpression and after knockdown of SU(HW), were performed in Drosophila cell cultures. Samples were hybridized to 380k NimbleGen arrays with 300 bp probe spacing. Every experiment was done in duplicate in the reverse dye orientation. The supplementary file 'GSE20311_DamID_norm_mean.txt' contains the mean log2(Dam-fusion/Dam-only) values of two replicates.

2011-01-24 | E-GEOD-20311 | biostudies-arrayexpress

Physical and functional compartmentalization of archaeal chromosomes

Project description:The three-dimensional organization of chromosomes can have a profound impact on their replication and expression. The chromosomes of higher eukaryotes possess discrete compartments that are characterized by differing transcriptional activities. Contrastingly, most bacterial chromosomes have simpler organization with local domains, the boundaries of which are influenced by gene expression. Numerous studies have revealed that the higher-order architectures of bacterial and eukaryotic chromosomes are dependent on the actions of Structural Maintenance of Chromosomes (SMC) superfamily protein complexes, in particular the near-universal condensin complex. Intriguingly, however, many archaea, including members of the genus Sulfolobus do not encode canonical condensin. We describe chromosome conformation capture experiments on Sulfolobus species. These reveal the presence of distinct domains along Sulfolobus chromosomes that undergo discrete and specific higher-order interactions, thus defining two compartment types. We observe causal linkages between compartment identity, gene expression and binding of a hitherto uncharacterized SMC superfamily protein that we term “coalescin”.

2019-09-19 | GSE128063 | GEO

Differential contributions of nuclear lamina association and genome compartmentalization to gene regulation

Project description:Purpose: A systematic analysis of how lamina association of chromosome regions influences their gene regulation in response to stimuli. Here, Lamin associated domains (LADs) of prostate cancer cell lines LNCaP and VCaP were experimentally measured using Lamin B1 ChIP-Seq so that these could be compared to previously published expression data in these cell lines and published LAD data from other cell types.

2022-09-12 | GSE213032 | GEO

Transcription profiling of human tongue carcinoma cells treated with emdogain and TGF beta1

Project description:Background: The composition of Emdogain® (EMD) is unclear, but it has been postulated to contain transforming growth factor-beta-1 (TGF-beta1) as the main functioning cytokine. The purpose of this study was to compare target genes of EMD and TGF-beta1 on invasive oral carcinoma HSC-3 cells. Particular focus was on matrix metalloproteinase (MMP) family genes. <br>Methodology/Principal Findings: Affymetrix microarrays were conducted to study differentially (P<0.05) expressed genes in HSC-3 cells after 6h and 24h of EMD (200 ?g/ml) or TGF-beta1 (10 ng/ml) incubations. Gene Ontology (GO) enrichment analyses from the regulated genes were also conducted. After 6h of EMD or TGF-?1 treatment, 48 and 393 genes, respectively, were regulated. After 24h incubations, only 12 genes by EMD but 346 genes by TGF-beta1 were regulated. Among the most regulated genes by both of the study reagents were several genes commonly regulated in carcinomas, including MMP-9 and -10. The expression of MMP-10 by EMD treated carcinoma cells was also verified in protein level. <br>Conclusions/Significance: Our results show that EMD and TGF-beta1 can regulate genes related to carcinogenesis, but TGF-beta1 regulates significantly greater number of genes. This suggests that TGF-beta1 cannot be present in EMD at the studied concentration, if present at all.<br>

2010-04-30 | E-MEXP-2645 | biostudies-arrayexpress

Selective compartmentalization in condensin-depleted mitotic chromosomes

Project description:Selective compartmentalization in condensin-depleted mitotic chromosomes

| PRJNA949625 | ENA

Physical and functional compartmentalization of archaeal chromosomes

Project description:Physical and functional compartmentalization of archaeal chromosomes

| PRJNA526225 | ENA

Sheep longissimus dorsi (LD) muscle from 40 individual progeny belonging to six Poll Dorset industry sires

Project description:Expression profiling of sheep born to Australian industry sires with high and low genetic merit (Estimated Breeding Values or EBVs) for eye muscle depth (EMD). Progeny (40) from six Poll Dorset sires representing well defined extremes of EBVs for Eye Muscle Depth (low EBV EMD and high EBV EMD) were selected for analysis. The six sires were Australian industry sires with three sires representative of low EBV EMD and three representing high EBV EMD. Microarrays were used for transcription profiling of skeletal muscle samples taken from 40 individual progeny belonging to six Poll Dorset industry sires, with 3 sires extreme for high and 3 sires extreme for low muscling (based on EBV for EMD).

2010-11-30 | GSE20552 | GEO

CXCR4 regulates extra-medullary myeloma through epithelial-mesenchymal transition-like transcriptional activation

Project description:We have developed EMD- and BM-prone and defined the presence of an EMT-like mRNA signature in both EMD- and BM-prone clones.

2016-10-31 | GSE68538 | GEO

Preoperative Diagnosis of Benign Thyroid Nodules with Indeterminate Cytology

Project description:BACKGROUND: Following fine needle aspiration, 15-30% of thyroid nodules are not clearly benign or malignant. These cytologically indeterminate nodules are often referred for diagnostic surgery, though most prove benign. A novel diagnostic test measuring the expression of 167 genes has shown promise in improving pre-operative risk assessment. We evaluated this test in a prospective, multicenter study. METHODS: Over 19 months, we performed a prospective study at 49 clinical sites enrolling 3,789 patients and collecting 4,812 samples from thyroid nodules >1cm requiring evaluation. We obtained 577 cytologically indeterminate aspirates with corresponding histopathology of excised lesions on 413. Central blinded histopathologic review served as the reference (“gold”) standard. After applying inclusion criteria, gene expression classifier results were obtained for 265 indeterminate nodules used in this analysis, and performance was calculated. RESULTS: 85 of 265 indeterminate nodules were malignant. The gene expression classifier correctly identified 78 of 85 as ‘suspicious’ (92% sensitivity, [84%-97%] 95% CI). Specificity was 52%, [44%-59%]. The negative predictive value was 95%, 94%, and 85%, respectively, for aspirates with AUS/FLUS, FN/SFN, or ‘suspicious’ cytology. Analysis of 7 false negative cases revealed 6 with a paucity of thyroid follicular cells, suggesting that insufficient sampling of the nodule had occurred. CONCLUSIONS: Though individualized clinical care is recommended, these data support consideration of a conservative approach for most patients with indeterminate FNA cytology and benign gene expression classifier results. 265 cytologically indetermine samples, 47 cytologically benign and 55 cytologically malignant samples

2012-06-24 | E-GEOD-34289 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

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