Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Distinct roles of SOX9 in self-renewal of progenitors and mesenchymal transition of the endothelium [ATAC-seq]

ABSTRACT: Regenerative capabilities of the human endothelium are governed by vessel-resident progenitors termed endothelial colony forming cells (ECFCs). Endothelial cells acquire mesenchymal phenotypes during atherogenesis, via a process termed endothelial-to-mesenchymal transition (EndMT). This study aimed to investigate the molecular drivers of EndMT in the progenitor population under an atherogenic model. In the presence of oxidised low-density lipoprotein (oxLDL), cultured human ECFCs displayed classical features of EndMT, through reduced endothelial gene and protein expression, function as well as increased mesenchymal genes, contractility, and motility. Importantly, in vitro oxLDL resulted in a dramatic loss in progenitor self-renewal through single-cell colony formation assay and numbers. RNA sequencing of ECFCs exposed or not to oxLDL validated gene expression changes suggesting EndMT but identified SOX9 as one of the highly differentially expressed genes. ATACseq revealed SOX9 binding sites were associated with regions of dynamic chromosome accessibility resulting from exposure to oxLDL. EndMT phenotype and gene expression changes induced by oxLDL in vitro or high fat diet (HFD) in vivo was reversed by an shRNA knockdown of SOX9 or endothelial specific conditional knockout of Sox9 in murine models respectively. Finally, analysis of single cell RNA sequencing of human atherosclerotic aorta identified endothelial populations with mesenchymal characteristics overexpressing SOX9 when compared to controls. Overall, our findings support that in the atherogenic process, EndMT induced by oxLDL or HFD is driven by SOX9 and strongly affects progenitor function opening new avenues for targeting this process.

ORGANISM(S): Homo sapiens

PROVIDER: GSE247709 | GEO | 2024/08/30

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Distinct roles of SOX9 in self-renewal of progenitors and mesenchymal transition of the endothelium [RNA-seq]

Project description:Regenerative capabilities of the human endothelium are governed by vessel-resident progenitors termed endothelial colony forming cells (ECFCs). Endothelial cells acquire mesenchymal phenotypes during atherogenesis, via a process termed endothelial-to-mesenchymal transition (EndMT). This study aimed to investigate the molecular drivers of EndMT in the progenitor population under an atherogenic model. In the presence of oxidised low-density lipoprotein (oxLDL), cultured human ECFCs displayed classical features of EndMT, through reduced endothelial gene and protein expression, function as well as increased mesenchymal genes, contractility, and motility. Importantly, in vitro oxLDL resulted in a dramatic loss in progenitor self-renewal through single-cell colony formation assay and numbers. RNA sequencing of ECFCs exposed or not to oxLDL validated gene expression changes suggesting EndMT but identified SOX9 as one of the highly differentially expressed genes. ATACseq revealed SOX9 binding sites were associated with regions of dynamic chromosome accessibility resulting from exposure to oxLDL. EndMT phenotype and gene expression changes induced by oxLDL in vitro or high fat diet (HFD) in vivo was reversed by an shRNA knockdown of SOX9 or endothelial specific conditional knockout of Sox9 in murine models respectively. Finally, analysis of single cell RNA sequencing of human atherosclerotic aorta identified endothelial populations with mesenchymal characteristics overexpressing SOX9 when compared to controls. Overall, our findings support that in the atherogenic process, EndMT induced by oxLDL or HFD is driven by SOX9 and strongly affects progenitor function opening new avenues for targeting this process.

2024-08-30 | GSE247711 | GEO

Distinct phenotype and proteomic signature of peripheral blood-endothelial colony-forming cells of subjects with varied cardiovascular disease risks

Project description:Endothelial progenitor cells (EPCs) are circulating endothelial precursors shown to incorporate into foci of neovascularisation. Herein, we describe phenotypic characteristics of an EPC sub-type called endothelial colony-forming cells (ECFCs). Peripheral blood-isolated ECFCs expressed endothelial and progenitor surface antigens and displayed cobblestone-patterned colonies with clonal proliferative and angiogenic capacities in vitro. ECFCs demonstrated endothelial cell-like shear stress responses including cell alignment and PECAM-1 expression. Proteomic comparison with an endothelial reference population (human umbilical vein endothelial cells) confirmed a similar proteomic profile. Hierarchical clustering revealed two distinct ECFC clusters with differences in cell growth, proliferation and angiogenesis capacities. The cluster with compromised functionality was also associated with elevated blood pressure and impaired lipid profile. Our findings described an endothelial-like phenotype of blood-derived ECFCs with distinctive proteomic signatures based on cellular and clinical characteristics. ECFCs may aid in identifying novel mechanisms associated with cardiovascular disease risk and new targets to enhance angiogenesis.

2022-02-15 | PXD020677 | Pride

DNA methylation profiling of cord blood progenitor endothelial cells from overweight and GDM pregnancies

Project description:Fetal progenitor endothelial cells (endothelial colony forming cells; ECFC) are recruited for repair, vascular growth and angiogenesis and their high abundance perinatally suggests a function in postnatal vasculogenesis and angiogenesis. In this study we profiled ECFCs from pregnancies of control, overweight and diabetic mothers to study if adverse pregnancies are associated with epigenetic variation in ECFCs.

2021-12-14 | GSE180355 | GEO

Genomic binding profile of TAL1 in human Endothelial Colony-Forming Cells

Project description:Endothelial colony-forming cells (ECFCs) have been reported as promising cells for regenerative medicine thanks to their angiorepair properties. Transcription factors are primary determinants of the functional capacity of the cells and TAL1 has been shown as a critical regulator of endothelial lineage in both development and adult life. However, only few (three) TAL1 targets have been identified so far in mouse and human endothelial cells. This ChIP-seq experiment was designed to identify genome binding/occupancy of TAL1 by ChIP and high throughput sequencing in primary human endothelial stem/progenitor cells. TAL1 ChIP and IgG ChIP (negative control) were performed in crosslinked ECFCs derived from human umbilical cord blood.

2014-05-06 | E-GEOD-44442 | biostudies-arrayexpress

Human umbilical cord blood-derived endothelial colony forming cells under serum-free conditions

Project description:Derivation and expansion of human umbilical cord blood-derived endothelial colony forming cells under serum-free conditions - a transcriptome analysis. Endothelial colony forming cells (ECFCs) were isolated from term umbilical cord blood units. ECFCs were expanded under standard, fetal bovine serum (FBS) containing endothelial medium, or transferred to chemically defined endothelial media without FBS. Microarray expression profiling was applied to compare the transcriptome profiles in FBS-containing versus FBS-free culture. Comparison of the expression patterns of ECFCs that were either cultured in FBS-containing medium or in serum-free medium (five replicates each).

2010-07-29 | E-GEOD-20504 | biostudies-arrayexpress

Human umbilical cord blood-derived endothelial colony forming cells under serum-free conditions

2010-06-29 | GSE20504 | GEO

Global gene expression differences between blood- and lymphatic-specific endothelial colony forming cells

Project description:The identification of circulating endothelial progenitor cells has led to speculation regarding their origin as well as their contribution to neovascular development. Two distinct types of endothelium make up the blood and lymphatic vessel system. However, it has yet to be determined whether there are distinct lymphatic-specific circulating endothelial progenitor cells. We isolated circulating endothelial colony forming cells (ECFCs) from whole peripheral blood. These cells are endothelial in nature, as defined by their expression of endothelial markers and their ability to undergo capillary morphogenesis in three-dimensional culture. A subset of isolated colonies express markers of lymphatic endothelium, including VEGFR-3 and Prox-1, with low levels of VEGFR-1, a blood endothelial marker, while the bulk of the isolated cells express high VEGFR-1 levels with low VEGFR-3 and Prox-1 expression. The different isolates have differential responses to VEGF-C, a lymphatic endothelial specific cytokine, strongly suggesting that there are lymphatic specific and blood specific ECFCs. Global analysis of gene expression revealed key differences in the regulation of pathways involved in cellular differentiation between blood and lymphatic-specific ECFCs. These data indicate that there are two distinguishable circulating ECFC types, blood and lymphatic, which are likely to have discrete functions during neovascularization. RNA was isolated from 2 blood-specific ECFC cell lines and 2 lymphatic-specific ECFC cell lines 3 separate times each

2014-06-23 | E-GEOD-54416 | biostudies-arrayexpress

Human ECFCs: Cord Blood vs Peripehral Blood ECFCs

Project description:miRNA profiling was carried out using the miRCURY LNA™ microRNA Array (5th gen - hsa, mmu & rno). microRNA profiling of CB and PB-derived ECFCs from 3 independent donors from each cell source. To identify and understand the regulation of endothelial cell functions through comparing miRNA expression profiling of cord blood (CB) derived endothelial colony forming cells (ECFCs) and peripheral blood (PB) ECFCs

2017-03-20 | GSE81574 | GEO

The histone demethylase JMJD2B regulates endothelial-to-mesenchymal transition [microarray]

Project description:Endothelial cells play an important role in maintenance of the vascular system and the repair after injury. Under pro-inflammatory conditions, endothelial cells can acquire a mesenchymal phenotype by a process named endothelial-to-mesenchymal transition (EndMT), which affects the functional properties of endothelial cells. Here, we investigated the epigenetic control of EndMT. We show that the histone demethylase JMJD2B is induced by EndMT promoting pro-inflammatory and hypoxic conditions. Silencing of JMJD2B reduced TGF-β2-induced expression of mesenchymal genes and prevented the alterations in endothelial morphology and impaired endothelial barrier function. Endothelial-specific deletion of JMJD2B in vivo confirmed a reduction of EndMT after myocardial infarction. EndMT did not affect global H3K9me3 levels but induced a site-specific reduction of repressive H3K9me3 marks at promoters of mesenchymal genes, such as Calponin (CNN1), and genes involved in TGF-β signaling, such as AKT Serine/Threonine Kinase 3 (AKT3) and sulfatase 1 (SULF1). Silencing of JMJD2B prevented the EndMT-induced reduction of H3K9me3 marks at these promotors and further repressed these EndMT-related genes. Our study reveals that endothelial identity and function is critically controlled by the histone demethylase JMJD2B, which is induced by EndMT-promoting pro-inflammatory and hypoxic conditions and support the acquirement of a mesenchymal phenotype.

2020-01-08 | GSE143150 | GEO

The histone demethylase JMJD2B regulates endothelial-to-mesenchymal transition [HTS]

2020-01-08 | GSE143148 | GEO

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