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Unknown,Transcriptomics,Genomics,Proteomics

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Time-course analysis of transcriptomes of human long-term (LT) and short-term (ST) hematopoietic stem cells (HSC) after xenotransplantation

ABSTRACT: Here we tracked transcriptional changes in LT, ST-HSC and MLP after transplantation into immunocompromised mice. We show that LT- and ST-HSC activate similar pathways upon transplantation but they modulate distinct sets of genes. Total RNA was obtained from flow-sorted populations of human LT-, ST-HSC and MLP isolated from cord blood or immunocompromised mice transplanted with human at hematopoeitic progenitors at different time points after transplantation.

ORGANISM(S): Homo sapiens

SUBMITTER: Elisa Laurenti

PROVIDER: E-GEOD-58299 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Time-course analysis of transcriptomes of human long-term (LT) and short-term (ST) hematopoietic stem cells (HSC) after xenotransplantation

Project description:Here we tracked transcriptional changes in LT, ST-HSC and MLP after transplantation into immunocompromised mice. We show that LT- and ST-HSC activate similar pathways upon transplantation but they modulate distinct sets of genes.

2015-02-20 | GSE58299 | GEO

Expression data from human hematopoietic stem and progenitor compartments from patients with acute myeloid leukemia with normal karyotype and healthy controls

Project description:We applied a novel approach of parallel transcriptional analysis of multiple, highly fractionated stem and progenitor populations from patients with acute myeloid leukemia (AML) and a normal karyotype. We isolated phenotypic long-term HSC (LT-HSC), short-term HSC (ST-HSC), and committed granulocyte-monocyte progenitors (GMP) from individual patients, and measured gene expression profiles of each population, and in comparison to their phenotypic counterparts from age-matched healthy controls. Bone marrow samples from AML patients with normal karyotype and age-matched healthy controls were used in this study. Hematopoietic stem and progenitor compartments were purified by multiparameter-high speed fluorescence-activated cell sorting (FACS) from CD34+ enriched bone marrow to isolate LT-HSC (Lin-/CD34+/CD38-/CD90+), ST-HSC (Lin-/CD34+/CD38-/CD90-), and GMP (Lin-/CD34+/CD38+/CD123+/CD45R+).

2012-09-05 | E-GEOD-35008 | biostudies-arrayexpress

Expression data from human hematopoietic stem and progenitor compartments from patients with acute myeloid leukemia with monosomy 7 and healthy controls

Project description:We applied a novel approach of parallel transcriptional analysis of multiple, highly fractionated stem and progenitor populations in a genetically defined subset of AML (AML with monosomy 7). We isolated phenotypic long-term HSC (LT-HSC), short-term HSC (ST-HSC), and committed granulocyte-monocyte progenitors (GMP) from individual patients with AML, and measured gene expression profiles of each population, and in comparison to their phenotypic counterparts from age-matched healthy controls. Bone marrow samples from AML patients bearing monosomy 7 and age-matched healthy controls were used in this study. Hematopoietic stem and progenitor compartments were purified by multiparameter-high speed fluorescence-activated cell sorting (FACS) from CD34+ enriched bone marrow to isolate LT-HSC (Lin-/CD34+/CD38-/CD90+), ST-HSC (Lin-/CD34+/CD38-/CD90-), and GMP (Lin-/CD34+/CD38+/CD123+/CD45R+).

2012-09-05 | E-GEOD-35010 | biostudies-arrayexpress

RNA-seq of human long-term and short-term hematopoietic stem cells from umblical cord blood with lentiviral overexpression of S1PR3

2021-01-19 | GSE149238 | GEO

RNA-seq of uncultured CD112high and CD112low and cultured long-term (LT) and short-term (ST) human hematopoietic stem cells (HSC) overexpressing INKA-1

Project description:RNA-seq of uncultured CD112high and CD112low long-term(LT) human hematopoietic stem cells (HSC) and cultured and lentiviral transduced (CTRL, INKA1-OE) LT- and short-term HSC from umbilical cord blood We performed RNA-sequencing to elucidate the biological pathways (1) altered by INKA1 overexpression in LT-HSC and ST-HSC that may contribute to the induced transient restraint in generating proliferative hematopoietic output in vivo and in vitro; and (2) that underlie the differential in vitro priming and regeneration phenotypes of CD112high and CD112low LT-HSC. Therefore, we prospectively isolated indicated subpopulations from 3 independent human umbilical cord blood pools and subjected them either to RNA-sequencing directly or following culture, lentiviral transduction and purification of the transduced cell fractions. We show that distinct subsets of human LT-HSC respond differently to regeneration-mediated stress and that INKA1 governs these distinct stemness states where CD112low LT-HSC are marked by an alternative state of quiescence with high INKA1 preserving self-renewal and regenerative capacity upon successive rounds of regeneration-mediated stress.

2021-03-25 | GSE148883 | GEO

RNA Sequencing of LT-HSCs and ST-HSCs from healthy adult human Bone Marrow

Project description:The transcriptome of LT-HSC (CD34+CD38-CD45RA+CD90+CD49f+) and ST-HSC (CD34+CD38-CD45RA+CD90-CD49f-) from healthy adult human Bone Marrow Cells were assessed by RNA-seq.

2022-04-06 | E-MTAB-9892 | biostudies-arrayexpress

Long-term effects of low doses of Î³-irradiation on hematopoietic stem cells

Project description:Analysis of highly purified long-term hematopoietic stem cells (LT-HSCs) irradiated at 0Gy, 0.02Gy, 0.1Gy and 0.5Gy six months after transplantation. Results provide insight into the molecular mechanisms underlying multiple aspects of LT-HSCs premature ageing after low doses of Î³-irradiation (0.02Gy). Four samples were analyzed and correlated with the control group (0Gy).

2016-02-26 | E-GEOD-66375 | biostudies-arrayexpress

The transition from quiescent to activated states in human hematopoietic stem cells is governed by dynamic 3D genome reorganization [Low-C]

Project description:Life-long blood production requires long-term hematopoietic stem cells (LT-HSC) - marked by stemness states involving quiescence and self-renewal - to transition into activated short-term HSC (ST-HSC) with reduced stemness. As few transcriptional changes underlie this transition, we used single-cell and bulk ATAC-seq on human HSC and stem/progenitor subsets (HSPC) to uncover chromatin accessibility signatures, one including LT-HSC (LT/HSPC signature) and another excluding LT-HSC (Act/HSPC signature). These signatures inversely correlated during early hematopoietic commitment and differentiation. The Act/HSPC signature contains CTCF binding sites mediating 351 chromatin interactions, engaged in ST-HSC but not LT-HSC, enclosing multiple stemness pathway genes active in LT-HSC and repressed in ST-HSC. CTCF silencing derepressed stemness genes, restraining quiescent LT-HSC from transitioning to activated ST-HSC. Hence, 3D chromatin interactions centrally mediated by CTCF, endow a gatekeeper function that governs the earliest fate transitions HSC make by coordinating disparate stemness pathways linked to quiescence and self-renewal.

2020-11-23 | GSE159287 | GEO

Transcription profiling of mouse long or short term hematopoietic stem cells and the proto-oncogene Pbx1 (GEO Super Series)

Project description:This SuperSeries is composed of the following subset Series:; GSE9188: Differentially regulated genes in LT-HSC from control or Pbx1-null mice; GSE9189: Differentially regulated genes in normal LT-HSC vs ST-HSC Experiment Overall Design: Refer to individual Series

2008-06-20 | E-GEOD-9198 | biostudies-arrayexpress

RNA-seq study of human long-term and short-term hematopoietic stem cells from umblical cord blood with lentiviral overexpression of S1PR3

Project description:To investigate the molecular and biological pathways altered by S1PR3OE in human hematopoietic stem cells (HSC), we performed RNA-sequencing (RNA-seq) of LT- and ST-HSC 3 days after transduction with control or S1PR3 overexpression (OE) lentiviral vectors. LT-HSC and ST-HSC from 3 pool of CB lin- were FACS-purified, cells were prestimulated for 4 hours and transduced with lentiviral vectors. At day 3, 2000-5300 BFP+ cells were FACS-purified for RNA isolation with a PicoPure kit. We were able to isolate only 1600-1800 BFP+ cells from LT-HSC control samples as opposed to 4000-5400 BFP+ cells from S1PR3OE samples. Thus, we pooled all control BFP+ LT-HSC cells into one sample for RNA-seq analysis. BFP- LT-HSC from control vector transduction were purified from CB1 as an additional LT-HSC control. Nextera libraries generated from 10 ng RNA from 5 LT-HSC samples (2 controls, 3 S1PR3OE) and 6 ST-HSC samples (3 controls, 3 S1PR3OE) were subjected to 125 bp, paired-end RNA-sequencing on the Illumina HiSeq 2500 with an average of 50 million reads/sample at the Center for Applied Genomics, Sick Kids Hospital.

| EGAS00001004798 | EGA

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