GEO DataSets

(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) 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 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) Combinatorial actions of relatively few transcription factors control hematopoietic differentiation. To investigate this process in erythro-megakaryopoiesis, we correlated the genome-wide chromatin occupancy signatures of four master hematopoietic transcription factors (GATA1, GATA2, TAL1, and FLI1) and three diagnostic histone modification marks with the gene expression changes that occur during development of primary cultured megakaryocytes (MEG) and primary erythroblasts (ERY) from murine fetal liver hematopoietic stem/progenitor cells. more...

Organism:

Mus musculus

Type:

Other

Platforms:

GPL13112 GPL9250 GPL6246

42 Samples

Download data: BEDGRAPH, BIGWIG, BROADPEAK, CEL, TXT

(Submitter supplied) Combinatorial actions of relatively few transcription factors control hematopoietic differentiation. To investigate this process in erythro-megakaryopoiesis, we correlated the genome-wide chromatin occupancy signatures of four master hematopoietic transcription factors (GATA1, GATA2, SCL/TAL1 and FLI1) and three diagnostic histone modification marks with the gene expression changes that occur during development of primary megakaryocytes (MEG) and erythroblasts (ERY) from murine fetal liver hematopoietic stem/progenitor cells. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

12 Samples

Download data: CEL

(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) We have mapped the binding sites for the five key regulators GATA1, GATA2, RUNX1, FLI1 and TAL1/SCL in primary human megakaryocytes. Statistical analysis identified subsets of enriched as well as depleted combinatorial binding patterns. In particular simultaneous binding by all 5 factors was highly enriched and occurred in the vicinity of many genes known to be involved in blood and megakaryocyte development. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9115

6 Samples

Download data: BEDGRAPH, TXT

(Submitter supplied) Coordination of cellular processes through the establishment of tissue-specific gene expression programmes is essential for lineage maturation. The basic helix-loop-helix haemopoietic transcriptional regulator SCL/Tal1 is required for terminal differentiation of red blood cells. To gain insight into SCL function and mechanisms of action in erythropoiesis, we performed ChIP-sequencing and gene expression analyses from primary fetal liver erythroid cells. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6105

6 Samples

Download data: TXT

(Submitter supplied) We have previously proposed two distinct molecular mechanisms by which SCL binds its targets in hematopoiesis; either by direct contact with specific DNA sequences or by indirect recruitment through interaction with other proteins. We have established that direct DNA binding is the major non-redundant mechanism SCL exerts in red cells. A DNA-binding mutant form of SCL (SCLRER) had detrimental effect on erythropoiesis in vivo. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9185

4 Samples

Download data: TXT, WIG

(Submitter supplied) The basic-helix-loop-helix transcription factor Scl/Tal1 controls the development and subsequent differentiation of haematopoietic stem cells (HSCs). However, since few Scl target genes have been validated to date, the underlying mechanisms have remained largely unknown. Here we have employed ChIP-Seq technology to generate a genome-wide catalogue of Scl binding events in a stem/progenitor cell line followed by validation using primary fetal liver cells and comprehensive transgenic mouse assays. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9185

2 Samples

Download data: GFF, TXT

(Submitter supplied) Scl/Tal1 confers hemogenic competence and prevents cardiomyogenesis in embryonic endothelium. Here we show that Scl both directly activates a broad gene regulatory network required for hematopoietic stem/progenitor cell (HS/PC) development, and represses transcriptional regulators required for cardiogenesis. Cardiac repression occurs during a short developmental window through Scl binding to distant cardiac enhancers that harbor H3K4me1 at this stage. more...

Organism:

Mus musculus

Type:

Methylation profiling by high throughput sequencing

Platform:

GPL13112

4 Samples

Download data: BW

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

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing; Expression profiling by array; Methylation profiling by high throughput sequencing

Platforms:

GPL13112 GPL1261

47 Samples

Download data: BW, CEL, GTF

(Submitter supplied) Scl/Tal1 confers hemogenic competence and prevents cardiomyogenesis in embryonic endothelium. Here we show that Scl both directly activates a broad gene regulatory network required for hematopoietic stem/progenitor cell (HS/PC) development, and represses transcriptional regulators required for cardiogenesis. Cardiac repression occurs during a short developmental window through Scl binding to distant cardiac enhancers that harbor H3K4me1 at this stage. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) Scl/Tal1 confers hemogenic competence and prevents cardiomyogenesis in embryonic endothelium. Here we show that Scl both directly activates a broad gene regulatory network required for hematopoietic stem/progenitor cell (HS/PC) development, and represses transcriptional regulators required for cardiogenesis. Cardiac repression occurs during a short developmental window through Scl binding to distant cardiac enhancers that harbor H3K4me1 at this stage. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

3 Samples

Download data: GTF, XLSX

(Submitter supplied) Scl/Tal1 confers hemogenic competence and prevents cardiomyogenesis in embryonic endothelium. Here we show that Scl both directly activates a broad gene regulatory network required for hematopoietic stem/progenitor cell (HS/PC) development, and represses transcriptional regulators required for cardiogenesis. Cardiac repression occurs during a short developmental window through Scl binding to distant cardiac enhancers that harbor H3K4me1 at this stage. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL13112

34 Samples

Download data: BW

(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) 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) This dataset is part of a study that investigated how the hematopoietic system coordinates the rapid and efficient regeneration of the megakaryocytic lineage during stress scenarios. We found that the phenotypic hematopoietic stem cell (HSC) compartment contains stem-like megakaryocyte-committed progenitors (SL-MkPs), a cell population that shares many features with multipotent HSCs and serves as a lineage-restricted emergency pool for inflammatory insults. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

20 Samples

Download data: CSV, TXT

(Submitter supplied) We sequenced mRNA from young or old MkP populations identified in the mouse in order to determine novel molecular regulators of their unique functional properties.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21103

7 Samples

Download data: TXT

(Submitter supplied) Bulk transcriptomes of Megakaryocyte progenitor cells isolated from bone marrow of WT mice; the following cell types were sorted: CD48high Megakaryocyte Progenitor (MkP): lineage- Sca-1- c-kit+ CD41+ CD150+ CD48hi; CD48-/low Megakaryocyte Progenitor (MkP): lineage- Sca-1- c-kit+ CD41+ CD150+ CD48lo

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

7 Samples

Download data: XLSX