GEO DataSets

(Submitter supplied) The underlying mechanisms which are responsible and govern early haematopoietic differentiation during development are poorly understood. Gene expression comparison between pluripotent human embryonic stem cells and earliest haematopoietic progenitors may reveal novel transcripts and pathways and provide crucial insight into early haematopoietic lineage specification and development. Understanding of transcriptional cues that direct differentiation of human embryonic stem cells (hESC) to defined and functional cell types is essential for their future clinical applications. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

8 Samples

Download data: CEL

(Submitter supplied) To deepen the understanding of the molecular mechanisms that regulate megakaryocytic differentiation mediated by SCL, We performed gene expression profiling (GEP) using oligonucleotide microarrays of control (EV) and SCL-overexpressing cells that were undifferentiated or at day 14 of EB differentiation.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16699

8 Samples

Download data: TXT

(Submitter supplied) In order to identify genes that are activated in differentiating WT ESCs, but are missing in Tal-1-/- and Runx1-/- ESCs, and which might be involved in the generation of definitive hematopoietic progenitors and their specification thereafter, we performed microarray analyses on purified Flk-1+ cells, differentiated from these ESCs for 4, 5, and 6 days “in vitro”.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

15 Samples

Download data: CEL, CHP

(Submitter supplied) Hematopoietic differentiation is strictly regulated by complex network of transcription factors that are controlled by ligands binding to cell surface receptors. Disruptions of the intricate sequences of transcriptional activation and suppression of multiple genes cause hematological diseases, such as leukemias, myelodysplastic syndromes or myeloproliferative syndromes. From a clinical standpoint, deciphering the pattern of gene expression during hematopoiesis may help unravel disease-specific mechanisms in hematopoietic malignancies. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5188

12 Samples

Download data: CEL

(Submitter supplied) TAL1/SCL is a master regulator of hematopoiesis whose expression promotes opposite outcomes depending on the cell type - differentiation in the erythroid lineage or oncogenesis in the T-cell lineage. Here we used a combination of ChIP-sequencing and gene expression profiling to compare the function of TAL1 in normal erythroid and leukemic T-cells. Analysis of the genome-wide binding properties of TAL1 in these two hematopoietic lineages revealed new insight into the mechanism by which transcription factors select their binding sites in alternate lineages. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9052

3 Samples

Download data: BED, MAP

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

20 Samples

Download data: CEL

(Submitter supplied) Megakaryopoiesis is a complex process that involves major cellular changes and relies on controlled coordination of cellular proliferation and differentiation. These mechanisms are orchestrated in part by transcriptional regulators. The key hematopoietic transcription factor SCL/TAL1 is required for specification of the megakaryocytic lineage from hematopoietic progenitors. Here, we report that it also critically controls terminal megakaryocyte maturation. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6105

6 Samples

Download data: TXT

(Submitter supplied) Analysis of CD41 single positive, VE-cadherin single positive, double positive, and double negatvie populations among 7AAD-CD45- cells from day 6 EBs

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

24 Samples

Download data: TXT

(Submitter supplied) The bHLH transcription factor stem cell leukemia gene (Scl) is a master regulator for hematopoiesis essential for hematopoietic specification and proper differentiation of the erythroid and megakaryocyte lineages. However, the critical downstream targets of Scl remain undefined. Here, we identified a novel Scl target gene, transcription factor myocyte enhancer factor 2 C (Mef2C) from Sclfl/fl fetal liver progenitor cell lines. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

7 Samples

Download data: CEL

(Submitter supplied) To examine genome-wide changes in mRNA expression, we performed RNA-Seq on HEB-/- and WT hESCs. There were 274 significant changes in mRNA expression (p<0.05) between HEB-/- and WT hESCs; 126 transcripts were lower and 148 transcripts were higher

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

6 Samples

Download data: XLSX

(Submitter supplied) Phenotypic cell-to-cell variability within clonal populations may be amanifestation of "gene expression noise", or it may reflect stablephenotypic variants. Such "non-genetic cell individuality" can arisefrom the slow fluctuations of protein levels in mammalian cells. Thesefluctuations produce persistent cell individuality, thereby rendering aclonal population heterogeneous. However, it remains unknown whetherthis heterogeneity may account for the stochasticity of cell fatedecisions in stem cells which depends on the kinetics that underliesheterogeneity. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6568

11 Samples

Download data: TXT

(Submitter supplied) The fathead minnow (Pimephales promelas) is a small fish species widely used for ecotoxicology research and regulatory testing in North America. This study used a 2000 gene oligonucleotide microarray to evaluate the effects of the aromatase inhibitor, fadrozole, on gene expression in the liver and brain tissue of exposed females. Reproductive measures, plasma vitellogenin, and gene expression data for the brain isoform of aromatase (CYP19B), vitellogenin precursors, and transferrin all provided evidence supporting the efficacy of the fadrozole exposure. more...

Organism:

Pimephales promelas

Type:

Expression profiling by array

Platform:

GPL6516

12 Samples

Download data: TXT

(Submitter supplied) Notch signaling regulates several cellular processes including cell fate decisions and proliferation in both invertebrates and mice. However, comparatively less is known about the role of Notch during early human development. Here, we examined the function of Notch signaling during hematopoietic lineage specification from human pluripotent stem cells (hPSCs) of both embryonic and adult fibroblast origin. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL96

8 Samples

Download data: CEL

(Submitter supplied) Endothelium in embryonic hematopoietic tissues generates hematopoietic stem/progenitor cells; however, it is unknown how its unique potential is specified. We show that transcription factor Scl/Tal1 is essential for both establishing the hematopoietic transcriptional program in hemogenic endothelium and preventing its misspecification to a cardiomyogenic fate. Scl-/- embryos activated a cardiac transcriptional program in yolk sac endothelium, leading to the emergence of CD31+Pdgfrα+ cardiogenic precursors that generated spontaneously beating cardiomyocytes. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

24 Samples

Download data: CEL

(Submitter supplied) MLL-AF4 is a hallmark genomic aberration which arises prenatally in high-risk infant acute lymphoblastic leukemia (ALL). In human embryonic stem cells (hESCs), MLL-AF4 skewed hemato-endothelial specification but was not sufficient for transformation. Additional cooperating genetic insults seem required for MLL-AF4-mediated leukemogenesis. FLT3 is highly expressed in MLL-AF4+ ALL through activating mutations (FLT3-TKD or FLT3-ITD) or increased transcriptional expression, being therefore considered a potential cooperating event in MLL-AF4+ ALL. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL13607

18 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

7 Samples

Download data: TXT

(Submitter supplied) We performed morphogen-directed differentiation of human PSCs into HE followed by combinatorial screening of 26 candidate HSC-specifying TFs for the potential to promote hematopoietic engraftment in irradiated immune deficient murine hosts. We recovered seven TFs (ERG, HOXA5, HOXA9, HOXA10, LCOR, RUNX1, SPI1) that together were sufficient to convert HE into hematopoietic stem and progenitor cells (HSPCs) that engraft primary and secondary murine recipients

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

2 Samples

Download data: TXT

(Submitter supplied) We performed morphogen-directed differentiation of human PSCs into HE followed by combinatorial screening of 26 candidate HSC-specifying TFs for the potential to promote hematopoietic engraftment in irradiated immune deficient murine hosts. We recovered seven TFs (ERG, HOXA5, HOXA9, HOXA10, LCOR, RUNX1, SPI1) that together were sufficient to convert HE into hematopoietic stem and progenitor cells (HSPCs) that engraft primary and secondary murine recipients.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18573

5 Samples

Download data: TXT

(Submitter supplied) SCL/TAL1, a tissue-specific transcription factor of the basic helix-loop-helix (bHLH) family, and c-Kit, a tyrosine kinase receptor, control hematopoietic stem cell survival and quiescence. Here we report that SCL and c-Kit signaling control a common gene expression signature, of which 19 genes are associated with apoptosis. In vivo, SCL levels are limiting for the clonal expansion of Kit+ multipotent and erythroid progenitors. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL96

5 Samples

Download data: CEL

(Submitter supplied) Klf1 (formerly known as Eklf) regulates the development of erythroid cells from bi-potent progenitor cells via the transcriptional activation of a diverse set of genes. Mice lacking Klf1 die in utero prior to E15 from severe anemia due to the inadequate expression of genes controlling hemoglobin production, cell membrane and cytoskeletal integrity, and the cell cycle and proliferation. We have recently described the full repertoire of Klf1 binding sites in vivo by performing Klf1 ChIP-seq in primary erythroid tissue (E14.5 fetal liver). more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11002

6 Samples

Download data: BAM