Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Differential open chromatin profile and transcriptomic signature define depot-specific human subcutaneous preadipocytes [RNA-seq]

ABSTRACT: RNA-seq experiments revealed an A-fat and GF-fat selective gene expression signature, with 126 genes up-regulated in abdominal preadipocytes and 90 genes up-regulated in GF cells. Assay for transposase-accessible chromatin with high throughput sequencing (ATAC-seq) identified almost 10-times more A-specific chromatin-accessible regions. Using a combined analysis of ATAC-seq and global gene expression data, we identified 74 of the 126 abdominal-specific genes (59%) with A-specific accessible chromatin sites within 200kb of the transcription start site (TSS). Interestingly, only 14 of the 90 GF-specific genes (15%) had GF-specific accessible chromatin sites within 200kb of the corresponding TSS, whereas 25 of them (28%) had abdominal-specific accessible chromatin sites.

ORGANISM(S): Homo sapiens

PROVIDER: GSE118497 | GEO | 2018/08/14

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Differential open chromatin profile and transcriptomic signature define depot-specific human subcutaneous preadipocytes [ATAC-Seq]

Project description:RNA-seq experiments revealed an A-fat and GF-fat selective gene expression signature, with 126 genes up-regulated in abdominal preadipocytes and 90 genes up-regulated in GF cells. Assay for transposase-accessible chromatin with high throughput sequencing (ATAC-seq) identified almost 10-times more A-specific chromatin-accessible regions. Using a combined analysis of ATAC-seq and global gene expression data, we identified 74 of the 126 abdominal-specific genes (59%) with A-specific accessible chromatin sites within 200kb of the transcription start site (TSS). Interestingly, only 14 of the 90 GF-specific genes (15%) had GF-specific accessible chromatin sites within 200kb of the corresponding TSS, whereas 25 of them (28%) had abdominal-specific accessible chromatin sites.

2018-08-14 | GSE118499 | GEO

Microbiota modulate transcription in the intestinal epithelium without remodeling the accessible chromatin landscape

Project description:We profiled transcriptome and accessible chromatin landscapes in intestinal epithelial cells (IECs) from mice reared in the presence or absence of microbiota. We show that regional differences in gene transcription along the intestinal tract were accompanied by major alterations in chromatin organization. Surprisingly, we discovered that microbiota modify host gene transcription in IECs without significantly impacting the accessible chromatin landscape. Instead, microbiota regulation of host gene transcription might be achieved by differential expression of specific TFs and enrichment of their binding sites in nucleosome depleted CRRs near target genes. Our results suggest that the chromatin landscape in IECs is pre-programmed by the host in a region-specific manner to permit responses to microbiota through binding of open CRRs by specific TFs. mRNA and accessible chromatin (DNase-seq) profiles from colonic and ileal IECs were compared between conventionally-raised (CR), germ-free (GF), and conventionalized (CV) C57BL/6 mice.

2014-06-07 | E-GEOD-57919 | biostudies-arrayexpress

Visualization and Sequencing of Accessible Chromatin Reveals Cell Cycle and Post-HDAC inhibitor Treatment Dynamics

Project description:Chromatin accessibility in the nucleus is a predictor of gene expression, cell division and cell type specificity. NicE-viewSeq (Nicking Enzyme assisted viewing and Sequencing) allows accessible chromatin visualization and sequencing with lower mitochondrial DNA and duplicated sequences compared to ATACsee. Using NicE-viewSeq we interrogated cell cycle G1, S and G2M specific accessible chromatin in mammalian cells. Despite DNA replication and subsequent condensation of chromatin to chromosome, chromatin accessibility remained subtly altered and generally preserved. Genome-wide alteration of accessibility for TSS and enhancer gradually decreased as the cell progressed from G1 to G2M, with distinctive differential accessibility near consensus transcription factors sites. Inhibition of histone deacetylase promoted accessible chromatin of the gene body, correlating with apoptotic gene expression. In addition, reduced chromatin accessibility for MYC oncogene pathway correlated with gene down regulation. Surprisingly, repetitive RNA expression remained unaltered following histone acetylation mediated increased accessibility. Therefore, we suggest that subtle changes in chromatin accessibility is a prerequisite during cell cycle and histone deacetylase inhibitor mediated therapeutics.

2020-09-09 | GSE139253 | GEO

Transcription elongator SPT6L regulates the occupancies of the SWI2/SNF2 chromatin remodelers SYD/BRM and nucleosomes at transcription start sites in Arabidopsis

Project description:Chromatin remodelers have been thought to be crucial in creating an accessible chromatin environment before transcription activation. However, it is still unclear how chromatin remodelers recognize and bind to the active regions. In this study, we found that chromatin remodelers SPLAYED (SYD) and BRAHMA (BRM) interact and co-occupy with the Suppressor of Ty6-like (SPT6L), a core subunit of the transcription machinery, at thousands of the transcription start sites (TSS). The association of SYD and BRM to chromatin is dramatically reduced in spt6l and can be Chromatin remodelers have been thought to be crucial in creating an accessible chromatin environment before transcription activation. However, it is still unclear how chromatin remodelers recognize and bind to the active regions. In this study, we found that chromatin remodelers SPLAYED (SYD) and BRAHMA (BRM) interact and co-occupy with Suppressor of Ty6-like (SPT6L), a core subunit of the transcription machinery, at thousands of the transcription start sites (TSS). The association of SYD and BRM to chromatin is dramatically reduced in spt6l and can be restored mainly by SPT6LΔtSH2, which binds to TSS in a RNA polymerase II (Pol II)-independent manner. Furthermore, SPT6L and SYD/BRM are involved in regulating the nucleosome and Pol II occupancy around TSS. The presence of SPT6L is sufficient to restore the association of the chromatin remodeler SYD to chromatin and maintain normal nucleosome occupancy. Our findings suggest that the two chromatin remodelers can form protein complexes with the core subunit of the transcription machinery and regulate nucleosome occupancy in the early transcription stage.

2022-12-01 | GSE207391 | GEO

Genome-wide maps of chromatin state in human adipose derived stem cells isolated from abdominal (ABD) and gluteofemoral (GF) subcutaneous adipose tissue

Project description:Human adipose serived stem cells (ASC) isolated from A and GF adipose tissue obtained from premenopausal women were used to perform assess accessible chromatin regions by ATAC-seq, chromatin marks, CTCF and RNAPII identification by chIP-seq

2022-05-31 | GSE192749 | GEO

Human subcutaneous preadipocytes RNAseq

Project description:we performed RNA-seq and pathways analysis on human preadipocytes isolated from abdominal (A) and gluteofemoral (GF) fat of 10 apple-shaped women and 7 pear-shaped women . Out of the 23,511 annotated transcripts, 636 and 752 genes were differentially expressed in apple- compared to pear-shaped cells in A-FAT and GF-FAT respectively. Interestingly, one of the most significantly over-represented pathways from the apple-specific gene list was “Nucleotide Excision Repair pathway”.

2021-08-19 | GSE176603 | GEO

Genome-wide occupancy map of GATA-1 in proliferating and differentiating murine ES cell derived erythroid progenitors (ES-EP)

Project description:We find GATA-1 occupies 6,600 sites in proliferating erythroid progenitors and 10,600 sites in differentiating progenitors. 80-90% of GATA-1 binds within intragenic or intergenic regions, while <20% of GATA-1 is found within 2kb of TSS.

2012-02-27 | GSE35379 | GEO

Proteasome inhibition reprograms chromatin landscape in breast cancer (RNA-Seq)

Project description:The 26S proteasome regulates general protein homeostasis and controls vital cellular processes, including cell division and transcriptional regulation. Cancer cells are dependent on the proper functioning of the proteasome to modulate gene expression networks that promote tumor growth. Proteasome inhibition has emerged as an effective therapeutic strategy, although mechanisms by which this approach achieves its outcomes remain unclear. We performed an integrative analysis of the transcriptome and chromatin landscape of MCF-7 breast cancer cells treated with a model proteasome inhibitor, MG132, to examine the consequences of proteasome inhibition on gene regulation. MG132 treatment initiated dynamic changes in chromatin accessibility at specific loci termed Differentially Open Chromatin Regions (DOCRs). DOCRs with increased accessibility were primarily distal to transcription start sites (TSS), while those with decreased accessibility were promoter proximal and distal to TSS. Promoter proximal DOCRs showed a unique chromatin architecture associated with distinct divergent transcription patterns. Conversely, DOCRs distal to TSS were enriched in oncogenic super enhancers that are predominantly accessible in non-basal compared to basal breast tumor subtypes. These data define distinct chromatin states and RNAPII transcription patterns, revealing molecular mechanisms by which the proteasome modulates the expression of gene networks intrinsic to breast cancer biology.

2024-03-13 | GSE241600 | GEO

Proteasome inhibition reprograms chromatin landscape in breast cancer (Start-Seq)

2024-03-13 | GSE241599 | GEO

Proteasome inhibition reprograms chromatin landscape in breast cancer (ChIP-Seq)

2024-03-13 | GSE241598 | GEO