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N-cadherin expressing bone and marrow stromal progenitor cells maintain reserve hematopoietic stem cells

ABSTRACT: N-cadherin expressing bone and marrow stromal progenitor cells maintain reserve hematopoietic stem cells

PROVIDER: PRJNA414092 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6164740.fastq.gz	Fastqsanger.gz
	SRR6164750.fastq.gz	Fastqsanger.gz
	SRR6164760.fastq.gz	Fastqsanger.gz
	SRR6164770.fastq.gz	Fastqsanger.gz
	SRR6164780.fastq.gz	Fastqsanger.gz

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N-cadherin expressing bone and marrow stromal progenitor cells maintain reserve hematopoietic stem cells

Project description:Regulation of hematopoietic stem cells (HSCs) by bone marrow (BM) niches has been extensively studied; however, whether and how HSC subpopulations are distinctively regulated by BM niches remain unclear. Here, we functionally distinguished reserve HSCs (rHSCs) from primed HSCs (pHSCs) based on their response to chemotherapy and examined how they are dichotomously regulated by BM niches. Both pHSCs and rHSCs supported long-term hematopoiesis in homeostasis; however, pHSCs were sensitive but rHSCs were resistant to chemotherapy. Surviving rHSCs restored the HSC pool and supported hematopoietic regeneration after chemotherapy. The rHSCs were preferentially maintained in the endosteal region that enriches N-cadherin+ (Ncad+) bone-lining cells in homeostasis and post-chemotherapy. N-cad+ cells were functional bone and marrow stromal progenitor cells (BMSPCs), giving rise to osteoblasts, adipocytes, and chondrocytes in vitro and in vivo. Finally, ablation of Ncad+ niche cells or deletion of SCF from N-cad+ niche cells impaired rHSC maintenance during homeostasis and regeneration.

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N-Cadherin-Expressing Bone and Marrow Stromal Progenitor Cells Maintain Reserve Hematopoietic Stem Cells.

Project description:Regulation of hematopoietic stem cells (HSCs) by bone marrow (BM) niches has been extensively studied; however, whether and how HSC subpopulations are distinctively regulated by BM niches remain unclear. Here, we functionally distinguished reserve HSCs (rHSCs) from primed HSCs (pHSCs) based on their response to chemotherapy and examined how they are dichotomously regulated by BM niches. Both pHSCs and rHSCs supported long-term hematopoiesis in homeostasis; however, pHSCs were sensitive but rHSCs were resistant to chemotherapy. Surviving rHSCs restored the HSC pool and supported hematopoietic regeneration after chemotherapy. The rHSCs were preferentially maintained in the endosteal region that enriches N-cadherin+ (N-cad+) bone-lining cells in homeostasis and post-chemotherapy. N-cad+ cells were functional bone and marrow stromal progenitor cells (BMSPCs), giving rise to osteoblasts, adipocytes, and chondrocytes in vitro and in vivo. Finally, ablation of N-cad+ niche cells or deletion of SCF from N-cad+ niche cells impaired rHSC maintenance during homeostasis and regeneration.

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Constitutively Active Foxo3 in Oocytes Preserves Ovarian Reserve in Mice

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Expression data from three endothelial cell lines derived from murine embryonic stem cells expressing VE-cadherin, N-cadherin or both

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Expression data from three endothelial cell lines derived from murine embryonic stem cells expressing VE-cadherin, N-cadherin or both

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Project description:Endothelial differentiation occurs during normal vascular development in the developing embryo. Mouse embryonic stem (ES) cells were used to further define the molecular mechanisms of endothelial differentiation. By flow cytometry a population of VEGF-R2 positive cells was identified as early as 2.5 days after differentiation of ES cells, and a subset of VEGF-R2 + cells, that were CD41+ positive at 3.5 days. A separate population of VEGF-R2+ stem cells expressing the endothelial-specific marker CD144 (VE-cadherin) was also identified at this same time point. Microarray analysis of >45,000 transcripts was performed on RNA obtained from cells expressing VEGF-R2, CD41, and CD144. Experiment Overall Design: We identified four populations of cells; cells expressing VEGF-R2 (day 2.5), CD41 expressing cells (day 3.5), cells expressing CD144 (VE-Cadherin, day 3.5), and cells expressing CD144 (day 6.5). In addition to this, we have also obtained the negative control cells at each time such as VEGF-R2 (day 2.5) negative, CD41 negative (day 3.5), CD144 negative (VE-Cadherin, day 3.5), and negative CD144 (day 6.5). RNA for the microarray experiments were obtained in duplicate from two separately conducted experiments using the murine embryonic stem cells..

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