Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA144909 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:IRF2, IRF6, and MYB are candidate regulators of human erythropoiesis. We here examine primary CD34+ hematopoietic stem/progenitor cells (HSPCs)-derived erythroid progenitors with control, IRF2, IRF6, or MYB shRNA lentiviral transduction prior to differentiation. Gene expression microarray profiling datasets for MYB shRNA and control shRNA were obtained from Gene Expression Omnibus (GEO) under accession number GSE25678. The data were analyzed together with the datasets obtained in this study. Primary maturing adult erythroblasts were generated ex vivo from CD34+ hematopoietic stem/progenitor cells (HSPCs) using a serum-free two-phase liquid culture system. CD34+ HSPCs were transduced with lentiviruses containing shRNAs against IRF2 or IRF6 gene, selected and differentiated to proerythroblasts (ProEs). Cells were harvested at day 5 of differentiated and total RNA were extracted. This was used to hybridize to Affymetrix expression arrays using the HG-U133 Plus 2.0 platform.
2012-10-05 | E-GEOD-36988 | biostudies-arrayexpress
Project description: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. Here, we report that ectopic expression of three to four genetic factors that have been used for iPS cell derivation enables CB-derived erythroblasts to undergo extended ex vivo expansion (M-bM-^IM-%10^51 fold in ~9 months) in a defined suspension culture condition without change of cell identity or function. These vastly expanding erythroblasts maintain homogeneously immature erythroblast phenotypes, a normal diploid karyotype and dependence on specific combination of cytokines and hormone for survival and proliferation throughout the continuous expansion period. When switched to a culture condition for terminal maturation, these immortalized erythroblasts gradually exit cell cycle, decrease cell size, accumulate hemoglobin, condense nuclei and eventually give rise to enucleated hemoglobin-containing erythrocytes. Our result may ultimately lead to the development of unlimited sources of cultured RBCs for optimally-matched or personalized transfusion medicine. We compared the global gene expression profiles of different human cell types: iE: immortalized erythroblasts generated by genetic reprogramming from pCBE; pCBE: primary cord blood-derived erythroblasts; CD34+: CD34+ purified hematopoietic stem/progenitor cells from adult blood or fetal liver; TF-1: a human erythroleukemia cell line; ESC: human embryonic stem cells; iPSCs: human induced pluripotent stem cells. We want to see the relationship among these cell types. We included multiple samples (biological replicates) for most cell types.
2013-12-31 | E-GEOD-44136 | biostudies-arrayexpress
Project description:To facilitate comparative genomic analyses of human fetal and adult cells undergoing erythropoiesis, we employed a serum-free two-phase liquid culture system to expand and differentiate primary human CD34+ hematopoietic stem/progenitor cells (HSPCs) ex vivo. In this experimental context, highly enriched populations of stage-matched, differentiating, primary proerythroblasts (ProEs) were generated. We selected four time points (day 0, CD34+ HSPCs; day 3, 5, and 7, differentiating ProEs) that represented similar stages differentiation for gene expression profiling using microarrays. Primary maturing fetal or adult erythroblasts were generated ex vivo from CD34+ hematopoietic stem/progenitor cells (HSPCs) using a serum-free two-phase liquid culture system. Total RNA from primary fetal and adult HSPCs (day 0) and differentiating proerythroblasts (ProEs; day 3, 5, and 7) were extracted and used to hybridize to Affymetrix expression arrays using the HG-U133 Plus 2.0 platform.
2012-10-05 | E-GEOD-36984 | biostudies-arrayexpress
Project description:CD34+ Haematopoietic stem cells were differentiated ex vivo to generate ChIP-seq data for machine learning of rules underlying open chromatin dynamics.
2020-07-08 | GSE137982 | GEO
Project description:Genome-wide maps of chromatin state in human erythroblasts differentiated from CD34+ cells.
| PRJNA398104 | ENA
Project description:Ex vivo communities derived from human microbiome samples incubated with a range of drugs.
2019-12-02 | MSV000084641 | GNPS
Project description:Characterization of human erythropoiesis using ex vivo differentiation of CD34 HSC (ChIP-seq)
| PRJNA517963 | ENA
Project description: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. Here, we report that ectopic expression of three to four genetic factors that have been used for iPS cell derivation enables CB-derived erythroblasts to undergo extended ex vivo expansion (≥10^51 fold in ~9 months) in a defined suspension culture condition without change of cell identity or function. These vastly expanding erythroblasts maintain homogeneously immature erythroblast phenotypes, a normal diploid karyotype and dependence on specific combination of cytokines and hormone for survival and proliferation throughout the continuous expansion period. When switched to a culture condition for terminal maturation, these immortalized erythroblasts gradually exit cell cycle, decrease cell size, accumulate hemoglobin, condense nuclei and eventually give rise to enucleated hemoglobin-containing erythrocytes. Our result may ultimately lead to the development of unlimited sources of cultured RBCs for optimally-matched or personalized transfusion medicine.
2013-12-31 | GSE44136 | GEO
Project description:We used microarray profiling in erythroid cells to uncover TAL1 dependent genes in a hematopoietic differentiation context. Differentiated ex vivo hematopoietic multipotential progenitors isolated from adult peripheral blood. The knockdown of TAL1 (KD) was induced in pro-erythroblasts (Days 8 and 9 of differentiation) using lentivirus-delivered shRNA. A scramble (scr) shRNA sequence was used as a negative control.
2010-12-14 | E-GEOD-20545 | biostudies-arrayexpress
Project description:RNA-seq analysis was performed to compare differentially expressed genes in freshly isolated and ex-vivo cultured human cord blood CD34+ cells. Mitochondrion related genes are upregulated in CD34+ hematopoietic stem and progenitor cells upon ex vivo culture. In vivo transplantation experiments demonstrate that stemness of CD34+ cells is significantly decreased due to oxidative stress induced by ex vivo culture.
2021-09-30 | GSE179928 | GEO