GEO DataSets

(Submitter supplied) Regulation of the cell cycle is intimately linked to erythroid differentiation, yet how these processes are coupled is not well understood. To gain insight into this coordinate regulation, we examined the role that the retinoblastoma protein (Rb), a central regulator of the cell cycle, plays in erythropoiesis. We found that Rb serves a cell-intrinsic role and its absence causes ineffective erythropoiesis, with a differentiation block at the transition from early to late erythroblasts. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) Rb null embryos exhibit defective fetal liver erythropoiesis. We used microarrays to compare Wt and Rb null fetal livers and to analyse gene expression differences which accompany and may underlie Rb null fetal liver degeneration, erythroid failure, and erythropoietic island dissolution. We used microarrays to compare Wt and Rb null fetal livers and analyse gene expression changes which accompany and may underlie fetal liver. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS2757

Platform:

GPL81

6 Samples

Download data: CEL

Analysis of embryonic day 12.5 livers from retinoblastoma protein (Rb)-null mutants. Rb-null embryos exhibit defective fetal liver erythropoiesis. Results provide insight into the molecular basis of the erythroblastic island defect in the Rb-null fetal liver.

Organism:

Mus musculus

Type:

Expression profiling by array, count, 2 genotype/variation sets

Platform:

GPL81

Series:

GSE6787

6 Samples

Download data: CEL

(Submitter supplied) We identified a role for E2F-2 in the regulation of erythroblast nuclear condensation and enucleation. To help define the mechanism by which E2F-2 regulates these processes, we performed RNA-sequencing on undifferentiated hematopoietic cells and sorted, orthochromatic erythroblasts obtained from wildtype and E2F-2 knockout animals. In undifferentiated progenitor cells we find a limited number of differentially expressed genes associated with E2F-2-loss, likely due to compensation by other E2F family members. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16331

8 Samples

Download data: TXT

(Submitter supplied) The mitochondrial superoxide dismutase (SOD2) is a major antioxidant protein which detoxifies superoxide anion radicals generated by mitochondrial respiration (Weisiger and Fridovich, J. Biol. Chem. 1973). We designed a model of oxidative stress-induced anemia caused by SOD2-deficiency (Friedman et al. J. Exp. Med. 2001). Our previous work showed that mice reconstituted with SOD2-deficient hematopoietic stem cells develop an anemia with striking similarity to human sideroblastic anemia (SA) (Friedman et al. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

7 Samples

Download data: CEL, EXP

(Submitter supplied) Cells lacking Rb1 are deficient in differentiation. Loss of Kdm5a rescues myogenic differentiation, as judged by appearance of morphologically normal myotubes that display expression of late markers of differentiation. In order to better understand how Kdm5a loss rescues differentiation, we induced mouse embryonic fibroblasts (MEFs) of different genotypes to undergo myogenic differentiation and analyzed gene expression changes in wild-type, Kdm5a-/-, Rb1-/- and Kdm5a-/-; Rb1-/- cells. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11002

12 Samples

Download data: TXT

(Submitter supplied) We sought to determine H3K4me3 distribution in mouse embryonic stem (ES) cells deficient for RBP2 compared with wild-type cells. RBP2 modifies methylated lysine residues on histone tails. As a result of this analysis, we identified genomic regions with changed H3K4me3 status and described these in gene ontology (GO) categories.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9185

3 Samples

Download data: BED, WIG

(Submitter supplied) Iron and heme play central roles in red blood cell production. However, the mechanisms by which iron and heme levels coordinate erythropoiesis remain incompletely understood. HRI is a heme-regulated kinase that controls translation by phosphorylating eIF2a. Here, we investigate the global impact of iron, heme and HRI on protein translation in vivo in murine primary erythroblasts using ribosome profiling. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL13112

21 Samples

Download data: TXT

(Submitter supplied) SETD8 is the sole methyltransferase capable of mono-methylating histone H4, lysine 20. SETD8 is highly expressed in erythroid cells and erythroid deletion of Setd8 is embryonic lethal by embryonic day 11.5 (E11.5) due to profound anemia, suggesting it has an erythroid-specific function. To gain insights into the function of SETD8 during erythroid differentiation, we performed ATAC-seq on sorted populations of E10.5 Setd8 null and control erythroblasts. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17021

5 Samples

Download data: BW, NARROWPEAK

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

Organism:

Homo sapiens

Type:

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

Platforms:

GPL22936 GPL18573

26 Samples

Download data: CEL, WIG

(Submitter supplied) The role of ribosome biogenesis in erythroid development is supported by the recognition of erythroid defects in ribosomopathies in both Diamond-Blackfan anemia and 5q- syndrome. Whether ribosome biogenesis exerts a regulatory function on normal erythroid development is still unknown. In the present study, a detailed characterization of ribosome biogenesis dynamics during human and murine erythropoiesis shows that ribosome biogenesis is abruptly interrupted by the drop of rDNA transcription and the collapse of ribosomal protein neo-synthesis. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL18573

4 Samples

Download data: WIG

(Submitter supplied) The role of ribosome biogenesis in erythroid development is supported by the recognition of erythroid defects in ribosomopathies in both Diamond-Blackfan anemia and 5q- syndrome. Whether ribosome biogenesis exerts a regulatory function on normal erythroid development is still unknown. In the present study, a detailed characterization of ribosome biogenesis dynamics during human and murine erythropoiesis shows that ribosome biogenesis is abruptly interrupted by the drop of rDNA transcription and the collapse of ribosomal protein neo-synthesis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL22936

22 Samples

Download data: CEL

(Submitter supplied) Erythropoiesis is a tightly regulated process. Development of red blood cells occurs through differentiation of hematopoietic stem cells into more committed progenitors and finally into erythrocytes. Binding of erythropoietin to its receptor (EpoR) is strictly required for erythropoiesis as it promotes survival and late maturation of erythroid progenitors. In vivo and in vitro studies have highlighted the requirement of EpoR signaling through Jak2 tyrosine-kinase and Stat5a/b as a central pathway. more...

Organism:

Mus musculus

Type:

Methylation profiling by high throughput sequencing

Platform:

GPL13112

6 Samples

Download data: BED

(Submitter supplied) EKLF is a Krüppel-like transcription factor identified as a transcriptional activator and chromatin modifier in erythroid cells. EKLF-deficient (Eklf -/-) mice die at day 14.5 of gestation from severe anemia. In this study, we demonstrate that early progenitor cells fail to undergo terminal erythroid differention in Eklf -/- embryos. To discover potential EKLF target genes responsible for the failure of erythropoiesis, transcriptional profiling was performed with RNA from wild type and Eklf -/- early erythroid progenitor cells. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

6 Samples

Download data: CEL

(Submitter supplied) Normal erythropoiesis requires a critical balance between proapoptotic and antipaoptotic pathways. Bcl-xl, an antiapoptotic protein is induced at end-stages of differentiation of erythroid precursors in response to erythropoietin. The details of the proapoptotic pathway and the critical proapoptotic proteins inhibited by Bcl-xl in erythropoiesis are not well understood. We employed gene targeting to ablate Nix, a proapoptotic BH3-domain only Bcl2 family protein, which is known to be transcriptionally induced during erythropoiesis. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS2630

Platform:

GPL1261

8 Samples

Download data: CEL

Analysis of spleens of mutants lacking Nix, a proapoptotic BH3-only factor that is transcriptionally induced during erythropoiesis. Erythropoiesis requires a critical balance between proapoptotic and antipaoptotic pathways. Results provide insight into the role of Nix in erythropoiesis.

Organism:

Mus musculus

Type:

Expression profiling by array, count, 2 genotype/variation sets

Platform:

GPL1261

Series:

GSE7020

8 Samples

Download data: CEL