GEO DataSets

(Submitter supplied) The identification of small molecules which either increase the number and/or enhance the activity of CD34+ hematopoietic stem and progenitor cells (HSPCs) during ex-vivo expansion has remained challenging. Applying an unbiased in vivo chemical screen in a transgenic (c-myb:EGFP) zebrafish embryo model, histone deacetylase inhibitors (HDACI) (valproic acid, resminostat and entinostat) were shown to significantly amplify the number of phenotypic hematopoietic precursors. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL16791

8 Samples

Download data: CSV

(Submitter supplied) Gene expression profiling of primary cord blood hematopoietic stem cell (day 0, CD34+ cells), enriched control (untreated), Scriptaid and Valproic acid expanded CD34+ cells after a week in culture. Cord blood CD34+ cells were processed individually and equal number of PC and reisolated CD34+ cells from 3-4 samples were pooled after expansion to avoid sample variations.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

8 Samples

Download data: TXT

(Submitter supplied) Cord blood hematopoietic stem cells (CB-HSCs) are an outstanding source for transplantation approaches. However, the amount of cells per donor is limited and culture expansion of CB-HSCs is accompanied by a loss of engraftment potential. In order to analyze the molecular mechanisms leading to this impaired potential we profiled global and local epigenotypes during the expansion of human CB hematopoietic stem and progenitor cells (HPSCs). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

6 Samples

Download data: CEL

(Submitter supplied) Expression profiles of LSK cells stimulated for 24h in the presence or in the absence of of valproic acid (VPA) The molecular process that underlies the biological effects of valproic acid (VPA), a widely used histone deacetylase inhibitor, on HSPCs was investigated by studying the early-response genes of VPA. Genome-wide gene expression studies revealed overrepresentation of genes involved in glutathione metabolism, receptor and signal transducer activity and changes in the HSPCs surface profile following short, 24h VPA treatment. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

6 Samples

Download data: TXT

(Submitter supplied) Efficient bone marrow homing is a prerequisite for successful engraftment of transplanted HSPC. This study aims at determining factors important in homing of these cells from the blood to the marrow and their re-engraftment. We have isolated nucleated cells from mobilized peripheral blood stem cell harvests (PBSC). CD34+ hematopoietic stem and progenitor cells (HSPC) were enriched from PBSC harvests by immunomagnetic separation using negative selection method. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL13252

9 Samples

Download data: TXT

(Submitter supplied) Although practiced clinically for more than 40 years, the use of hematopoietic stem cell (HSC) transplants remains limited by the ability to expand these cells ex vivo. An unbiased screen with primary human HSCs identified a purine derivative, StemRegenin 1 (SR1), that promotes the ex vivo expansion of CD34+ cells. Culture of HSCs with SR1 led to a 50-fold increase in cells expressing CD34 and a 17-fold increase in cells that retain the ability to engraft immunodeficient mice. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3911

Platform:

GPL570

8 Samples

Download data: CEL

Analysis of hematopoietic stem cells (HSC) treated with StemRegenin 1 (SR1) and LGC006 (a less potent SR1 analog) at 30nM to 1000nM. The use of HSC transplants depends on the ability to expand these cells ex vivo. Results provide insight into molecular basis of SR1-induced ex vivo HSC expansion.

Organism:

Homo sapiens

Type:

Expression profiling by array, transformed count, 2 agent, 5 dose sets

Platform:

GPL570

Series:

GSE28359

8 Samples

Download data: CEL

(Submitter supplied) The combination of valproic acid and lithium delays hematopoietic stem\progenitor differentiation

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6887

24 Samples

Download data: TXT

(Submitter supplied) Two small molecules, valproic acid (VPA) and lithium (Li), were tested to inhibit differentiation of hematopoietic stem/progenitor (HSPC) cells in culture. HSPCs exposed to VPA and Li during differentiation-inducing culture preserved an immature cell phenotype, provided radioprotection to lethally irradiated recipients and enhanced in vivo repopulating potential. Furthermore, VPA and Li synergistically preserved expression of stem cell-related genes and repressed genes involved in differentiation. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6885

12 Samples

Download data: TXT

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

Organism:

Mus musculus

Type:

Expression profiling by array

Platforms:

GPL6885 GPL6887

36 Samples

Download data

(Submitter supplied) MSC-adherent hematopoietic stem and progenotir cells (HSPC) express adhesion-associated genes at higher levels than non-adherent cells while cell-cycle and differentiation-associated genes are not significantly changed between the two cell populations. We used microarray to confirm identity of MSC-adherent and non-adherent cord blood-derived HSPCs and to exclude that cell cycle and differentiation affect adhesive capacity.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

6 Samples

Download data: CEL

(Submitter supplied) To discover novel growth factors for hematopoietic stem- and progenitor cells (HSPCs), we have assessed cytokine responses of cord blood (CB)-derived CD34+ cells in a high-content growth factor screen. We identify the immunoregulatory chemokine (C-C motif) ligand 28 (CCL28) as a novel growth factor that directly stimulates proliferation of primitive hematopoietic cells from different ontogenetic origins. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

9 Samples

Download data: CEL

(Submitter supplied) Due to their unique longevity and capacity to secrete high levels of protein, plasma B cells play have the potential to be used as a cell therapy for protein replacement. Here, we show that ex vivo engineered human plasma cells exhibited transcriptional features of long-lived plasma cells.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL30882

2 Samples

Download data: H5

(Submitter supplied) Due to their unique longevity and capacity to secrete high levels of protein, plasma B cells play have the potential to be used as a cell therapy for protein replacement. Here, we show that ex vivo engineered human plasma cells exhibited transcriptional features of long-lived plasma cells.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL30173

16 Samples

Download data: CSV