GEO DataSets

Analysis of 4 discrete populations of erythroid progenitors at successive erythropoietin-dependent stages of erythropoiesis: CFU-E, Pro-E, Int-E and Late-E. Unsorted erythroid cells at each stage also examined. Results provide insight into the molecular mechanisms underlying erythroblast maturation.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 4 development stage, 2 protocol sets

Platform:

GPL570

Series:

GSE22552

16 Samples

Download data: CEL

(Submitter supplied) Understanding the pattern of gene expression and identifying the specific genes expressed during erythropoiesis is crucial for a synthesis of erythroid developmental biology. Here we have isolated four distinct populations of erythroblasts at successive erythropoietin-dependent stages of erythropoiesis including the terminal, pyknotic stage. The transcriptome has been determined using Affymetrix arrays. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3860

Platform:

GPL570

16 Samples

Download data: CEL

(Submitter supplied) Erythropoiesis in mammals replenishes the circulating red blood cell (RBC) pool from hematopoietic stem/progenitor cells (HSPCs). Two distinct erythropoietic programs have been described. In the first trimester, hematopoietic precursors in the fetal yolk sac follow a primitive pattern of erythropoiesis. However, in the second trimester, hematopoietic stem cells (HSCs) from the fetal liver and later from the bone marrow differentiate by a definitive program of erythropoiesis to yield enucleated erythrocytes. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL17586

74 Samples

Download data: CEL

(Submitter supplied) Purpose:The purpose of this study is to create unbiased, stage-specific transcriptomes by RNA-seq analyses of pure populations of both murine and human erythroblasts at distinct developmental stages. Methods: Recently developed FACS-based methods (Chen et al, PNAS, Liu et al, Blood, Hu et al Blood) were employed to purify morphologically and functionally discrete populations of cells, each representing specific stages of terminal erythroid differentiation. more...

Organism:

Homo sapiens; Mus musculus

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL11154 GPL13112

27 Samples

Download data: TXT

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

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9185

22 Samples

Download data: TXT, WIG

(Submitter supplied) It is unclear how epigenetic changes regulate the induction of erythroid-specific genes during terminal erythropoiesis. Here we use global mRNA sequencing (mRNA-seq) and chromatin immunoprecipitation coupled to high-throughput sequencing (CHIP-seq) to investigate the changes that occur in mRNA levels, RNA Polymerase II (Pol II) occupancy and multiple post-translational histone modifications when erythroid progenitors differentiate into late erythroblasts. more...

Organism:

Mus musculus

Type:

Non-coding RNA profiling by high throughput sequencing

Platform:

GPL9185

4 Samples

Download data: TXT

(Submitter supplied) Here we globally analyzed mRNA and epigenetic changes in both early erythroid progenitors and late erythroblasts. Concomitant with gene induction there was an increase in RNA Pol II binding and activation marks near the transcriptional start site (TSS) and the elongation mark H3K79me2 (but not H3K36me3),both near the TSS and along the full gene length. In contrast, most repressed genes became depleted of elongation marks. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9185

18 Samples

Download data: TXT, WIG

(Submitter supplied) The characteristics of global gene expression patterns during umbilical cord blood (UCB)-CD34+ stem cell-derived erythropoiesis are not clearly elucidated. In this study, UCB-stem cells were grown in liquid culture as a model for this process. We observed a high proliferative capacity of UCB-stem cells producing over 10 billion viable cells in culture. Normal erythroid maturation was confirmed by increased expression of CD71 and CD235a biomarkers. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

12 Samples

Download data: TXT

(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) The supply of red blood cells (RBCs) is not sufficient in many developing countries or in developed countries for patients who need chronic transfusion from best-matched donors. Ex vivo expansion and maturation of human erythroid precursor cells (erythroblasts) could represent a potential solution. Proliferating erythroblasts can be expanded from human umbilical cord blood mononuclear cells (CB MNCs) ex vivo for 10^6-10^7 fold (in ~50 days) before undergoing senescence. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10739

14 Samples

Download data: CEL

(Submitter supplied) Fine-resolution differentiation trajectories of adult human hematopoietic stem cells (HSC) involved in the generation of red cells is critical for understanding dynamic developmental changes that accompany human erythropoiesis. Using Single-cell RNA sequencing (scRNA-seq) of primary human terminal erythroid cells (CD34−CD235a+) isolated directly from adult bone marrow (BM) and umbilical cord blood (UCB), we documented the transcriptome of terminally differentiated human erythroblasts at unprecedented resolution. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20795

5 Samples

Download data: TAR

(Submitter supplied) Occupancy of Ser5-Pol2 and Ser2-Pol2

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL20795

12 Samples

Download data: BW

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

Organism:

Homo sapiens

Type:

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

Platforms:

GPL20795 GPL11154

30 Samples

Download data: BIGWIG, BW, TXT

(Submitter supplied) We suggest a novel paradigm for understanding the epigenetic mechanisms that govern terminal erythroid maturation, and underlie inherited and acquired erythroid disease.  

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

4 Samples

Download data: TXT

(Submitter supplied) We suggest a novel paradigm for understanding the epigenetic mechanisms that govern terminal erythroid maturation, and underlie inherited and acquired erythroid disease.  

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL11154

8 Samples

Download data: BW

(Submitter supplied) We suggest a novel paradigm for understanding the epigenetic mechanisms that govern terminal erythroid maturation, and underlie inherited and acquired erythroid disease.  

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL11154

6 Samples

Download data: BIGWIG

(Submitter supplied) Differentiating erythroid cells execute a unique gene expression program that insures synthesis of the appropriate proteome at each stage of maturation. Standard expression microarrays provide important insight into erythroid gene expression, but cannot detect qualitative changes in transcript structure, mediated by RNA processing, that alter structure and function of encoded proteins. We analyzed stage-specific changes in the late erythroid transcriptome via use of high resolution microarrays that detect altered expression of individual exons. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL8119 GPL5188

17 Samples

Download data: CEL

(Submitter supplied) CD34+ progenitors were isolated from the bone marrow of three healthy volunteers. CD34+CD71+CD45RA- were FACS sorted to enrich for erythroid progenitors. The cells were cultured for four hours with or without EPO in combination with LY294002, and harvested for RNA extraction, amplification and expression analysis. A compound treatment design type is where the response to administration of a compound or chemical (including biological compounds such as hormones) is assayed. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2448

Platform:

GPL3528

12 Samples

Download data

Analysis of CD34+ erythroid progenitors stimulated with erythropoietin (Epo) with or without LY294002, a PI3K inhibitor. Epo promotes differentiation and proliferation of early progenitors via activation of PI3K. Results provide insight into molecular mechanisms underlying the effects of Epo.

Organism:

Homo sapiens

Type:

Expression profiling by array, log2 ratio, 4 growth protocol sets

Platform:

GPL3528

Series:

GSE6260

12 Samples

Download data

(Submitter supplied) Background: It has been reported that the phosphatidylinositol 3-kinase (PI3K)-AKT signaling pathway regulates erythropoietin (EPO)-induced survival, proliferation, and maturation of early erythroid progenitors. Erythroid cell proliferation and survival has also been related to activation of the JAK-STAT pathway. The goal of this study was to observe the function of EPO activation of JAK-STAT and PI3K/AKT pathways in the development of erythroid progenitors from hematopoietic CD34+ progenitor cells, as well as to distinguish early EPO target genes in human erythroid progenitors during ontogeny. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL15544

11 Samples

Download data: GPR, TXT