Browse
Submit Data
Databases
API
Help

Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

11 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Defining CD4 T Cell Memory by the Epigenetic Landscape of CpG DNA Methylation

ABSTRACT: This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

ORGANISM(S): Homo sapiens

SUBMITTER: Daniel Salomon

PROVIDER: E-GEOD-59860 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Publications

Defining CD4 T cell memory by the epigenetic landscape of CpG DNA methylation.

Komori H Kiyomi HK Hart Traver T LaMere Sarah A SA Chew Pamela V PV Salomon Daniel R DR

Journal of immunology (Baltimore, Md. : 1950) 20150109 4

Memory T cells are primed for rapid responses to Ag; however, the molecular mechanisms responsible for priming remain incompletely defined. CpG methylation in promoters is an epigenetic modification, which regulates gene transcription. Using targeted bisulfite sequencing, we examined methylation of 2100 genes (56,000 CpGs) mapped by deep sequencing of T cell activation in human naive and memory CD4 T cells. Four hundred sixty-six CpGs (132 genes) displayed differential methylation between naive ...[more]

PMID: 25576597

Similar Datasets

Defining CD4 T Cell Memory by the Epigenetic Landscape of CpG DNA Methylation [Bisulfite-Seq]

Project description:Memory T cells are primed for rapid responses to antigen; however, the molecular mechanisms responsible for priming remain incompletely defined. CpG methylation in promoters is an epigenetic modification, which regulates gene transcription. Using targeted bisulfite sequencing, we examined methylation of 2100 genes (56,000 CpG) mapped by deep sequencing to T cell activation in human naïve and memory CD4 T cells. 466 CpGs (132 genes) displayed differential methylation between naïve and memory cells. 21 genes exhibited both differential methylation and gene expression before activation, linking promoter DNA methylation states to gene regulation; 6 genes encode proteins closely studied in T cells while 15 genes represent novel targets for further study. 39 genes exhibited reduced methylation in memory cells coupled with increased gene expression with activation compared to naïve cells, revealing specific genes more rapidly expressed in memory compared to naïve cells and potentially regulated by DNA methylation. These findings define a DNA methylation signature unique to memory CD4 T cells and correlated with activation-induced gene expression. Targeted bisulfite sequencing of primary human naïve and memory CD4 T cells at rest and 48 hours post-activation.

2015-01-20 | E-GEOD-59858 | biostudies-arrayexpress

Application of Microdroplet PCR for Large-Scale Targeted Bisulfite Sequencing

Project description:Cytosine methylation of DNA CpG dinucleotides in gene promoters is an epigenetic modification that regulates gene transcription. While many methods exist to interrogate methylation states, no current methods offer large-scale, targeted, single CpG resolution. We report an approach combining bisulfite treatment followed by RainDance microdroplet PCR with next-generation sequencing to assay the methylation state of 50 genes in the regions 1 kb upstream and downstream of their transcription start sites. Wildtype and hypermethylated Jurkat DNA (New Englad Biolabs) was treated with bisulfite to convert all unmethylated cytosines to uracil. Following bisulfite treatment, targeted amplification was carried out using a custom primer library and microdroplet PCR. PCR product was sheared to 200 bp and ligated to sequencing adapters following standard protocols. Sequencing was conducted with single-end 100 bp reads on an Illumina GAIIx for wild type Jurkat DNA or Jurkat CpG DNA with a single sample per lane.

2011-06-25 | E-GEOD-30179 | biostudies-arrayexpress

Sequencing data for single cells and DNA-functionalized microbeads encapsulated in hydrogel droplets.

Project description:DNA barcodes can be used to identify single cells in a sequencing data space while optical codes can be used to track single live cells in an image data space. We have developed dual image and DNA (ID)-coding, which identifies individual single cells in both live image and sequencing data spaces. Samples provided here are relevant to proof-of-concept studies of ID-coding presented in the associated publication. DNA barcoded micro-particles were encapsulated in hydrogel droplets with or without single cells. The hydrogel droplets were then subjected to “single-droplet sequencing” where whole polyA-bearing nucleic acid components within a hydrogel droplet (i.e. mRNA from cells and synthetic DNA on beads) were concatenated by the same cell barcodes.

2023-12-11 | E-MTAB-12988 | biostudies-arrayexpress

ICOS-mediated inactivation of the FOXO1 transcription factor in the differentiation of T follicular helper cells

Project description:T follicular helper (Tfh) cells constitute an essential cell type in the induction of antibodies. We report that CD4 T cells lacking Foxo1 almost uniformly became CXCR5int Tfh cells following immunization. Moreover, a Foxo1 loss-of-function complemented an Icos mutation allowing the appearance of Tfh cells along with follicular, class-switched B cells and IgG isotype anti-DNA antibodies. Similarly, FOXO1 deficient Tfh differentiation displayed a substantially reduced dependence on ICOSL. Functional and molecular analyses show that FOXO1 regulates Tfh differentiation through a broad program of gene expression exemplified by positive regulation of Icos and negative regulation of Bcl6. These results demonstrate that a key step in Tfh differentiation is the ICOS-initiated activation of the PI3K-AKT pathway resulting in the inactivation of FOXO1. Performed ChIP-seq analysis to examine the role of foxo1 in the development of Tfh cells

2013-06-01 | E-GEOD-46525 | biostudies-arrayexpress

All-in-One Digital Microfluidics Pipeline for Proteomic Sample Preparation and Analysis

Project description:Dimethyl labeling was integrated into the microfluidic pipeline to allow for precise relative quantification of the trace samples at the nanogram level, and the new pipeline was applied to evaluating cancer cell lines and cancer tissue samples.

2023-03-24 | PXD036982 | Pride

Single-cell RNA sequencing data for a mixed population of K562 cells and THP-1 cells, encoded with combinatorial DNA barcodes.

Project description:Microdroplet-based co-culturing assays dissect a complex multi-cellular interactions into individual cell-cell interaction events in a highly parallelized manner. To integrate single-cell sequencing approaches into such in-droplet multicellular co-culturing assays, we demonstrate a chemistry approach for encoding the identity of droplets to their belonging cells. K562 cells and THP-1 cells were encapsulated in water-in-oil droplets, where they were labeled with DNA barcodes encoding the identity of individual droplets. Then cells were released from droplets for pooled single-cell RNA sequencing. cDNA and DNA barcodes were sequenced in separate sequencing libraries. Experiments were carried out in duplicate.

2023-06-27 | E-MTAB-12819 | biostudies-arrayexpress

Convergent Sense/Antisense Transcription At Intragenic Super-Enhancers Targets AID-initiated Genomic Instability

Project description:Activation-induced cytidine deaminase (AID) initiates both somatic hypermutation (SHM) for antibody affinity maturation and DNA breakage for antibody class switch recombination (CSR) via transcription-dependent cytidine deamination of single stranded DNA targets. While largely specific for immunglobulin genes, AID also acts on a limited set of off-targets, generating oncogenic translocations and mutations that contribute to B cell lymphoma. How AID is recruited to off-targets has been a long-standing mystery. Based on deep GRO-Seq studies of mouse and human B lineage cells activated for CSR or SHM, we report that most robust AID off-target translocations occur within highly focal regions of target genes in which sense and antisense transcription converge. Moreover, we found that such AID-targeting "convergent" transcription arises from antisense transcription that emanates from Super-Enhancers within sense transcribed gene bodies. Our findings provide a mechanistic explanation for AID off-targeting to a small subset of mostly lineage-specific genes in activated B cells. We performed GRO-Seq and H3K27Ac ChIP-Seq with different B lineage cell types and MEF cells to find the signatures associated with AID targeting.

2014-12-04 | E-GEOD-62296 | biostudies-arrayexpress

Transcription factor-SNP interactome for colorectal cancer risk loci

Project description:A core task to understand the consequences of non-coding single nucleotide polymorphisms (SNP) is to identify their genotype specific binding of transcription factor (TF). Here, we generate a large-scale TF-SNP interaction map for a selection of 116 colorectal cancer (CRC) risk loci and validated TF binding to 10 putatively functional SNPs. Our data further revealed TF binding complexity adjacent to the 116 risk loci, adding an additional layer of understanding to regulatory networks associated with CRC relevant loci.

2017-02-23 | PXD004435 | Pride

A Structure-Based Mechanism for DNA Entry into the Cohesin Ring

Project description:The ring-shaped cohesin complex is thought to fulfil its roles in sister chromatid cohesion, genome stability and gene regulation by topologically encircling DNAs. The ring is formed by two Structural Maintenance of Chromosome (SMC) subunits, whose ATPase heads are linked by a kleisin subunit. Additional components, including the Mis4Scc2/NIPL cohesin loader, engage the kleisin. Here, we visualize a DNA gripping intermediate during cohesin loading onto DNA by cryo-electron microscopy. ATP-dependent head engagement creates an interaction surface onto which Mis4Scc2/NIPL clamps the DNA. We use biophysical tools to establish the order of events during cohesin loading. DNA first traverses an N-terminal kleisin gate that was opened by ATP binding and closed again as the loader locks the DNA. Ensuing ATP hydrolysis and head disengagement, assisted by Mis4Scc2/NIPL, will complete DNA entry. A conserved kleisin N-terminal tail guides the DNA on its trajectory to successful topological DNA entry into the cohesin ring.

2020-08-05 | PXD018600 | Pride

Enhancer chromatin signatures predict Smad2/3 binding in Xenopus

Project description:In this study we have examine the deposition of H3K4me1,H3K4Me3 and H3K27Ac and the Nodal transcription factor, Smad2/3, immediately following zygotic transcription and continuing through gastrulation. We profiled 4 histone modifications (H3K4Me3, H3K27Me3, H3K27AC, H3K4Me1) and one transcription factor smad2/3 (+ chromatin input) using ChIP-Seq, and expression profiles (3' RNA-Seq) for Xenopus tropicalis embryos stage8, stage9 and stage10.5. Furthermore, we have profile two histone modifications (H3K4Me1 and H3K27Ac) in absance of nodal signaling in stage9 Xenopus tropicalis embryos using ChIP-seq and 3-seq

2014-09-17 | E-GEOD-56000 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

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