GEO DataSets

(Submitter supplied) Haematopoietic stem cells (HSCs) first emerge in the embryonic aorta-gonad-mesonephros (AGM) region. Studies on model organisms defined intersecting signalling pathways that converge to promote HSC emergence predominantly in the ventral domain of the dorsal aorta. Much less is known about mechanisms driving HSC development in human. Here, to identify secreted signals underlying human HSC development, we combined spatial transcriptomics analysis of dorso-ventral polarised signalling in the aorta with gene expression profiling of sorted cell populations and single cells. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL20301 GPL24676

44 Samples

Download data: CSV

(Submitter supplied) Single cell RNA-Seq exploration of the human dorsal aorta, the hematopoietic stem cell (HSC) developmental niche, to explore heterogeneity of the HSC microenvironment and elucidate lineage trajectories of nascent hematopoietic stem/progenitor cells (HSPCs) from endothelium.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL24676 GPL20301

2 Samples

Download data: CSV

(Submitter supplied) This dataset contains RNA-Seq data for cells within spatially defined subdomains of the human embryo dorsal aorta, subdissected from tissue sections using laser capture microdissection. This dataset explores dorsal-ventral polarisation across the dorsal aorta, the site of hematopoietic stem cell emergence.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL20301 GPL24676

30 Samples

Download data: TXT

(Submitter supplied) This dataset contains RNA-Seq data for sorted hematoendothelial subpopulations from the ventral (AoV) and dorsal (AoV) portions of the CS15-16 human embryo dorsal aorta. This includes endothelial (VC+CD45-), Hematopoietic Stem/Progenitor Cells (VC+CD45+) and more mature hematopoietic cells (VC-CD45+) from both the AoV and AoD.

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

12 Samples

Download data: TXT

(Submitter supplied) Hematopoietic stem cells (HSC) develop from hemogenic endothelium (HE) within embryonic arterial vessels such as the aorta of the aorta-gonad-mesonephros region (AGM). To identify the signals responsible for HSC formation, we used single cell RNA-sequencing to simultaneously analyze the transcriptional profiles of AGM-derived cells transitioning from HE to HSC, and AGM-derived endothelial cells which provide signals sufficient to support HSC maturation and self-renewal. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19057

12 Samples

Download data: MTX, RDS, TSV

(Submitter supplied) Human hematopoietic stem cell (HSC) ontogeny is poorly defined due to the inability to identify HSCs as they emerge and mature in different hematopoietic sites. We created a single-cell transcriptome map of human hematopoietic tissues from 1st trimester to birth and found that HSC signature RUNX1+HOXA9+MLLT3+MECOM+HLF+SPINK2+ distinguishes HSCs from progenitors throughout gestation. In addition to the AGM (aorta-gonad-mesonephros) region, nascent HSCs populated the placenta and yolk sac before colonizing the liver at 6 weeks. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

28 Samples

Download data: CSV, PNG, TAR

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

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Third-party reanalysis

Platform:

GPL24676

25 Samples

Download data: H5

(Submitter supplied) The emergence of definitive human haematopoietic stem cells (HSCs) during Carnegie Stages (CS) 14-17 in the aorta-gonad-mesonephros (AGM) region is a complex and tightly regulated process. In a previous study we conducted spatial transcriptomic analysis of the human AGM region at the end of this period (CS16/17) and identified secreted factors involved in HSC development. Here, we extend our analysis to investigate the progression of dorso-ventral polarized signalling around the dorsal aorta over the entire period of HSC emergence. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing; Third-party reanalysis

Platform:

GPL24676

1 Sample

Download data: H5, H5AD

(Submitter supplied) The emergence of definitive human haematopoietic stem cells (HSCs) during Carnegie Stages (CS) 14-17 in the aorta-gonad-mesonephros (AGM) region is a complex and tightly regulated process. In a previous study we conducted spatial transcriptomic analysis of the human AGM region at the end of this period (CS16/17) and identified secreted factors involved in HSC development. Here, we extend our analysis to investigate the progression of dorso-ventral polarized signalling around the dorsal aorta over the entire period of HSC emergence. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24676

24 Samples

Download data: CSV

(Submitter supplied) The aim of this study was to analyse the heterogeneity within the first haematopoietic stem cells generated during mouse development using single-cell RNA-Seq. Freshly dissected aorta-gonads-mesohenphros (AGM) regions from E11.5 mouse embryos were dissociated by collagenase and the cells stained for the cell surface markers EPCR and CD45. EPCR+CD45+ cells were index-sorted as single cells into 96-well plates and processed based on the SmartSeq2 protocol. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

335 Samples

Download data: TXT

(Submitter supplied) Hematopoietic stem cells (HSCs) in adults are believed to be born from hemogenic endothelial cells (HECs) in mid-gestational mouse embryos. Due to rare and transient nature, the HSC-competent ECs have never been stringently identified and accurately captured, let alone their genuine vasculature precursors. Here, we firstly used high-precision single-cell transcriptomics to unbiasedly examine relevant EC populations at continuous developmental stages and transcriptomically identified putative HSC-primed HECs. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21103

44 Samples

Download data: TXT

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

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

25 Samples

Download data

(Submitter supplied) In the developing embryo, haematopoietic stem cells (HSCs) emerge from the aorta-gonad-mesonephros (AGM) region but the molecular regulation of this process is poorly understood. Recently, the progression from E9.5 to E10.5 and polarity along the dorso-ventral axis have been identified as clear demarcations of the supportive HSC niche. To identify novel secreted regulators of HSC maturation, we performed RNA-sequencing over these spatio-temporal transitions in the AGM region, and supportive OP9 cell line.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

10 Samples

Download data: CSV

(Submitter supplied) In the developing embryo, haematopoietic stem cells (HSCs) emerge from the aorta-gonad-mesonephros (AGM) region but the molecular regulation of this process is poorly understood. Recently, the progression from E9.5 to E10.5 and polarity along the dorso-ventral axis have been identified as clear demarcations of the supportive HSC niche. To identify novel secreted regulators of HSC maturation, we performed RNA-sequencing over these spatio-temporal transitions in the AGM region, and supportive OP9 cell line.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

15 Samples

Download data: CSV

(Submitter supplied) We sequenced 4 sorted cell populations: ECs, HECs, Runx1+ IAHCs and Runx1- IAHCs.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

4 Samples

Download data: XLSX

(Submitter supplied) Hematopoietic stem cells (HSCs) produce all essential cellular components of the blood. Stromal cell lines supporting HSCs follow a vascular smooth muscle cell (vSMC) differentiation pathway, suggesting that some hematopoiesis-supporting cells originate from vSMC precursors. These pericyte-like precursors were recently identified in the aorta-gonad-mesonephros (AGM) region; however, their role in in vivo hematopoietic development remains unknown. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

2 Samples

Download data: MTX, TSV

(Submitter supplied) A mouse AGM-derived cell line, AGM-s3, was shown to support the development of hematopoietic stem cells. To elucidate the molecular mechanisms regulating early hematopoiesis, we obtained subclones from AGM-s3, some of which were hematopoiesis supportive (s3-A9) and others which were non-supportive (s3-A7), and we analyzed the gene expression profiles by gene chip analysis. Keywords: cell type comparison

Organism:

Mus musculus

Type:

Expression profiling by array

Platforms:

GPL83 GPL81 GPL82

9 Samples

Download data: CEL, CHP

(Submitter supplied) The first HSCs are produced in the aorta-gonadmesonephros (AGM) region of the embryo through endothelial to a hematopoietic transition. BMP4 and Hedgehog affect their production/expansion, but it is unknown whether they act to affect the same HSCs. In this study using the BRE GFP reporter mouse strain that identifies BMP/Smad-activated cells, we find that the AGM harbors two types of adult-repopulating HSCs upon explant culture.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

18 Samples

Download data: TXT

(Submitter supplied) Hematopoietic Stem Cells (HSC) are originated during embryonic development from endothelial-like cells located in the ventral side of the dorsal aorta around day E10-12 of murine development. This region is called AGM for Aorta/Gonad/Mesonephros and refers to the tissues around the hemogenic aorta. Cells that emerge from the endothelium and show hematopoietic traits can be distinguished by the expression of the c-kit receptor and finally acquire the CD45 marker.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL6246

6 Samples

Download data: CEL

(Submitter supplied) Hematopoietic stem cell (HSC) generation in the aorta-gonads-mesonephros region requires HSC specification signals from the surrounding microenvironment. In zebrafish, PDGF-B/PDGFRβ signaling controls hematopoietic stem/progenitor cell (HSPC) generation and is required in the HSC specification niche. Little is known about murine HSPC specification in vivo and whether PDGF-B/PDGFRβ is involved. Here we show that PDGFRβ is expressed in distinct perivascular stromal cell layers surrounding the mid-gestation dorsal aorta, and its deletion impairs hematopoiesis. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

2 Samples

Download data: MTX, TSV