Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Genome wide mapping of the haematopoietic system transcriptome

ABSTRACT: Recent advances in high density oligonucleotides microarray technology have brought solutions for molecular profiling of human samples at an unprecedented resolution. We mapped whole blood RNA from healthy volunteers and CD34+ from cytapheresis to Human Exon ST 1.0 microarrays. We compared mature blood cells samples with immature CD34+ samples and each of these compartiement with a broad panel of solid tissues. By scanning the expression of over one million known or predicted exons, transcripts such as INPP4B, NEDD9 CD74 and VAV3 were identified as alternatively transcribed between haematopoietic system and solid tissues. The very large combinatorial complexity conveyed by alternative splicing contributes to the specific functional properties of blood cells and haematopoietic stem cells. The gene expression profiles are freely accessible through a dynamic web atlas, providing to the medical and scientific community a simple mean to interrogate and visualize this reference dataset. Finally, the relevance and the precision provided by this exon expression map suggest that exon arrays may be a powerful tool to link specific peripheral whole blood exon signatures modifications to many diseases such as cancer or auto-immune disorders.

ORGANISM(S): Homo sapiens

PROVIDER: GSE15207 | GEO | 2010/02/03

SECONDARY ACCESSION(S): PRJNA116443

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Hematopietic system high resolution transcriptome

Project description:Recent advances in high density oligonucleotides microarray technology have generated solutions for molecular profiling of human samples at an unprecedented resolution. We mapped whole blood RNA from healthy volunteers and CD34+ collected by cytapheresis from patients to Exon ST 1.0 microarray probing for most known and predicted human exons. Comparison with a broad panel of solid tissues showed that blood displayed the largest tissue specific signature. This unique expression profile comprised transcripts from every blood cell compartment. Moreover, by scanning the expression of over one million different exons, several transcripts were identified as alternatively transcribed between whole blood and solid tissues, or CD34+ and other tissues. The precision of this expression map, at the exon resolution, and the coverage of every blood cell type and hematopoietic stem cells suggest that it will be possible to link specific whole blood exon signatures to many diseases such as cancer or auto-immune disorders and to discover alternative splicing events specific of mature blood cells or stem cells compartment.

2009-10-01 | GSE10480 | GEO

Hematopietic system high resolution transcriptome

2010-04-08 | E-GEOD-10480 | biostudies-arrayexpress

NEDD9 promotes oncogenic signaling, a stem/mesenchymal gene signature, and aggressive ovarian cancer growth in mice

Project description:Neural precursor cell expressed, developmentally downregulated 9 (NEDD9) supports oncogenic signaling in a number of solid and hematologic tumors. Little is known about the role of NEDD9 in ovarian carcinoma (OC), but available data suggest elevated mRNA and protein expression in advanced stage high grade cancers. We used a transgenic MISIIR-TAg mouse OC model combined with genetic ablation of Nedd9 to investigate its action in the development and progression of OC. A Nedd9-/- genotype delayed tumor growth rate, reduced incidence of ascites, and reduced expression and activation of signaling proteins including SRC, STAT3, E-cadherin and AURKA. Cell lines established from MISIIR-TAg;Nedd9-/- and MISIIR-TAg;Nedd9+/+ mice exhibited altered migration and invasion. Growth of these cells in a syngeneic allograft model indicated that systemic Nedd9 loss in the microenvironment had little impact on tumor allograft growth, but in a Nedd9 wild type background Nedd9-/- allografts exhibited significantly reduced growth, dissemination and oncogenic signaling compared to Nedd9+/+ allografts. Gene expression analysis revealed that Nedd9+/+ tumors exhibited more mesenchymal ‘stem-like’ transcriptional program, including increased expression of Aldh1a1 and Aldh1a2. Conversely, loss of Nedd9 resulted in increased expression of differentiation genes, including fallopian tube markers Foxj1, Ovgp1 and Pax8. Collectively, these data suggest that tumor cell-intrinsic Nedd9 expression promotes OC development and progression by broad induction of oncogenic protein signaling and stem/mesenchymal gene expression.

2018-06-12 | GSE106911 | GEO

Differentiation of human embryonic stem cells to HOXA+ hemogenic vasculature that resembles the aorta-gonad-mesonephros

Project description:The production of definitive haematopoietic stem/progenitor cells from human pluripotent stem cells (hPSCs) remains a significant challenge. Using reporter lines to track the endothelial (SOX17) to haematopoietic (RUNX1C) transition, we found that hPSC differentiated in growth factor supplemented serum free medium generated RUNX1C+CD34+ clonogenic cells that homed to the bone marrow, but did not engraft. Compared to repopulation-competent cord blood CD34+ cells, RUNX1C+CD34+ progenitors lacked HOXA gene expression, indicating incorrect mesoderm patterning. This deficiency was ameliorated by a timed pulse of WNT activation combined with ACTIVIN antagonism. Significantly, these HOXA+ cultures now formed complex SOX17+ vessels that produced fetal liver-like haematopoietic cells, similar to the human aorta-gonad-mesonephros (AGM). Comparison of transcriptional profiles of these nascent haematopoietic stem/progenitors with cells isolated from human AGM confirmed significant similarities, consistent with the assignment of our in vitro generated cells to the definitive human haematopoietic lineage. Our findings argue that HOXA codes established early in differentiation predict cellular potential and provide correct cell patterning for the specification of definitive haematopoietic lineages from hPSCs.

2016-10-17 | GSE81080 | GEO

Differentiation of human embryonic stem cells to HOXA+ hemogenic vasculature that resembles the aorta-gonad-mesonephros

2016-10-17 | GSE81074 | GEO

Expression data from different stages of erythropoiesis from cord derived CD34+ haematopoietic stem cells and human induced pluripotent stem cells

Project description:Erythropoiesis from pluripotent stem cells is very complex, and mirrors that observed in developmental erythropoiesis, with primitive and definitive waves. For a better understanding of their potential for their use in blood transfusion, they were compared to erythropoiesis from cord derived CD34 haematopoietic stem cells. We used microarrays to detail the global programme of gene expression underlying different stages of erythropoiesis from each source, pluripotent or haematopoietic stem cells.

2016-12-13 | GSE92285 | GEO

Acute Megakaryoblast Leukemia LC-MS/MS

Project description:Cord blood CD34 derived megakaryoblasts, cord blood CD34 derived megakaryoblasts gene modified with the CBFA2T3-GLIS2 fusion oncogene, and CBFA2T3-GLIS2 positive acute megakaryoblast leukemia patient samples underwent multiplexed mass spectrometry-based proteomic analysis.

2024-10-10 | PXD048474 | Pride

Differentiation timecourse of MK and EB from CD34+ progenitors

Project description:In vitro differentiation of CD34+ haematopoietic progenitors into megakaryocytes and erythroblasts in paired samples

2011-07-07 | E-MTAB-712 | biostudies-arrayexpress

Tumor Suppressor Role of INPP4B in Chemoresistant Retinoblastoma

Project description:Chemotherapy of retinoblastoma (RB), a malignant ocular childhood disease, is often limited by the development of resistances against commonly used drugs. We identified inositol polyphosphate 4-phosphatase type II (INPP4B) as a differentially regulated gene in etoposide resistant RB cell lines, potentially involved in the development of RB resistances. INPP4B is controversially discussed as a tumor suppressor and an oncogenic driver in various cancers, but its role in retinoblastoma in general and chemoresistant RB in particular is yet unknown. In the study presented, we investigated the expression of INPP4B in RB cell lines and patients and analyzed the effect of INPP4B overexpression on etoposide resistant RB cell growth in vitro and in vivo. INPP4B mRNA levels were significantly downregulated in RB cells lines compared to the healthy human retina, with even lower expression levels in etoposide resistant compared to the sensitive cell lines. Besides, a significant increase in INPP4B expression was observed in chemotherapy treated RB tumor patient samples compared to untreated tumors. INPP4B overexpression in etoposide resistant RB cells resulted in a significant reduction in cell viability with reduced growth, proliferation, anchorage-independent growth, and in ovo tumor formation. Caspase-3/7 mediated apoptosis was concomitantly increased, suggesting a tumor suppressive role of INPP4B in chemoresistant RB cells. No changes in AKT signalling were discernible, but p-SGK3 levels increased following INPP4B overexpression, indicating a potential regulation of SGK3 signalling in etoposide-resistant RB cells. RNAseq analysis of INPP4B overexpressing, etoposide resistant RB cell lines revealed differentially regulated genes involved in cancer progression, mirroring observed in vitro and in vivo effects of INPP4B overexpression and strengthening INPP4B`s importance for cell growth control and tumorigenicity.

2023-03-15 | GSE226408 | GEO

Single cell RNA sequencing of healthy and trisomy 21 (Down's syndrome) foetal liver and foetal bone marrow

Project description:Here, we performed single cell RNA sequencing (scRNA-seq) of human fetal liver and bone marrow tissue samples from 15 trisomy 21 (Ts21) and 3 healthy foetuses (median age 14 post-conception weeks). The data set is composed of approximately 1.1 million cells from three different populations: CD235- (niche and haematopoietic cells depleted of erythrocytes), CD34+/Lin- (haematopoietic progenitors), and CD45+ (all haematopoietic cells).

2024-07-22 | E-MTAB-13067 | 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