Single cell analysis in the adult bone marrow
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE128464 | GEO | 2020/09/08
REPOSITORIES: GEO
Similar Datasets
Project description:c-kit signaling plays pivotal roles in regulating the self-renewal and/or differentiation of many adult stem cells, such as hematopoietic stem cells. However, it remains controversial whether c-kit is expressed by and contribute to skeletal stem cells (SSCs). To test this, we lineage-traced c-kit+ cells and investigated the physiological importance of c-kit+ cells and c-kit signaling in bone development. We found that c-kit was not expressed by postnatal SSCs, but by fetal SSC precursors at the growth cartilage. Lineage-tracing of fetal c-kit+ cells marked approximately 20% of Lepr+ bone marrow stromal cells, generating nearly half of all osteoblasts in adult bone marrow. Disruption of mTOR signaling in c-kit+ cells impaired bone formation. Conditional deletion of Kitl (c-kit ligand, also known as Scf) from fetal, but not adult bone marrow stromal cells increased bone formation. Together, our work identified c-kit+ SSC precursors as an important source of bones formed during development. The osteogenic differentiation of these cells is temporally inhibited by Kitl from the bone marrow microenvironment.
2020-02-27 | GSE146002 | GEO
Project description:RNA and ATAC sequencing data of primary sorting CD45-Ter119-CD31-Scf; GFP+Cxcl12; DsRed+ bone marrow stromal cells ,2D cultured bone marrow stromal cells and 3D cultured bone marrow stromal cells. RNA sequencing data of sorted primary and 3D cocultured Lin-Sca1+C-kit+CD150+CD48+ hematopoietic stem cells from 8-12 weeks and 12-13 months old mice. RNA and ATAC sequencing data of primary sorting CD45-Ter119-CD31-Pdgfra+td-Tomato+ bone marrow stromal cells from young (8 wks), middle aged (12 months) and aged (22-24 months) Lepr-Cre;td-Tomato mice.
2023-04-06 | GSE180866 | GEO
Project description:Bone marrow long-lived plasma cells are essential for long-term protection against infection and their persistence within this organ relies on interactions with Cxcl12-expressing stromal cells that are still not clearly identified. Here, using single cell RNAseq and in silico transinteractome analyses we identified LepR+ mesenchymal cells as the stromal cell subset most likely to interact with plasma cells within the bone marrow. Moreover, we demonstrated that depending on the isotype they express, plasma cells may use different set of integrins and adhesion molecules to interact with these stromal cells. Altogether, our results constitute an unprecedented characterization of plasma cell subset stromal niches and open new avenues for the specific targeting of bone marrow plasma cells based on their isotype.
2023-06-30 | GSE228543 | GEO
Project description:To analyze the role of endothelial derived VEGF-C in the adult bone marrow vascular niche
2020-09-08 | GSE144420 | GEO
Project description:Fate decisions of haematopoietic stem cells (HSCs) to self-renew or differentiate in response to various demands are finely tuned by specialized microenvironments called “niches” in the bone marrow. Recent studies suggest that arterioles and sinusoids accompanied with distinct stromal cells marked by nerve/glial antigen 2 (NG2) and leptin receptor (LepR), compose distinct niches regulating quiescence and proliferation of HSCs, respectively. However, it remains unknown how the distinct niche cells differentially regulate the HSC functions. Here we show that effects of cytokines regulating HSC functions are dependent on the producing cell sources. Deletion of chemokine C-X-C motif ligand 12 (CXCL12) in NG2-cre targeted cells, which exclusively overlap with Nestin-GFP (Nes-GFP)+ stromal cells associated with arterioles and sinusoids, resulted in a robust reductions of HSCs in the bone marrow and massive mobilization. Deletion of CXCL12 from arteriolar NG2+ vascular smooth muscle cells caused a significant decrease of HSCs and altered HSC location in the marrow, while CXCL12 depletion from sinusoidal LepR+ cells did not reduce HSC numbers in the bone marrow. By contrast, deletion of stem cell factor (SCF) in LepR+ cells led to significant reductions in HSC numbers whereas SCF deletion in arteriolar NG2+ cells showed no effect on HSC numbers in the marrow. These results uncover the distinct contributions of cytokines derived from perivascular cells in separate vascular niches for HSC maintenance and mobilization. We sought to obtain comprehensive understanding of differences between peri-arteriolar and peri-sinusoidal niche cells by the present RNA-seq analysis.
2017-02-19 | GSE89811 | GEO
Project description:To analyze the role of VEGF-C in the adult bone marrow vascular niche after irradiation
2020-09-03 | GSE153339 | GEO
Project description:Human bone marrow stromal cells (BMSCs) are key elements of the hematopoietic environment and they play a central role in bone and bone marrow physiology. However, how key BMSC functions are regulated is largely unknown. We analyzed the role of the immediate early response transcription factor EGR1 as key BMSC regulator and found that EGR1 was highly expressed in prospectively-isolated primary BMSCs, downregulated upon culture, and lower in non-CFU-F-containing CD45neg BM cells. Furthermore, EGR1 expression was lower in proliferative regenerating adult and fetal primary cells compared to adult steady-state BMSCs. Accordingly, EGR1 overexpression markedly decreased BMSC proliferation but considerably improved hematopoietic stroma support function as indicated by an increased production of transplantable CD34+CD90+ hematopoietic stem cells in expansion co-cultures. The improvement of BMSC stroma support function was mediated by increased expression of hematopoietic supporting genes, such as VCAM1 and CCL28. On the other hand, EGR1 knockdown increased ROS-mediated BMSC proliferation, and clearly reduced BMSC hematopoietic stroma support potential. These findings thus show that EGR1 is a key BMSC transcription factor with a dual role in regulating proliferation and hematopoietic stroma support function that is controlling a genetic program to coordinate the specific functions of BMSC in their different biological contexts.
2019-06-27 | PXD011767 | Pride
Project description:Cell cycle quiescence is a critical feature contributing to haematopoietic stem cell (HSC) maintenance. Although various candidate stromal cells have been identified as potential HSC niches, the spatial localization of quiescent HSC in the bone marrow (BM) remains unclear. Here, using a novel approach that combines whole-mount confocal immunofluorescence imaging technique and computational modelling to analyse significant tridimensional associations among vascular structures, stromal cells and HSCs, we show that quiescent HSCs associate specifically with small arterioles that are preferentially found in endosteal BM. These arterioles are ensheathed exclusively by rare Nestin-GFP-peri/NG2+ pericytes, distinct from sinusoid-associated Nestin-GFP-retic/LepR+ cells. The present RNA-seq study sought to obtain a comprehensive understanding of the differences between the two distinct HSC cellular niches. mRNA profiles of sorted Nestin-GFP-peri and -GFP-retic bone marrow stromal cells were generated from pooled mice in triplicate by Illumina HiSeq 2000 sequencing.
2013-10-10 | E-GEOD-48764 | biostudies-arrayexpress
Project description:In order to comprehensively characterize bone marrow mesenchymal cells after myeloablation, single-nuclei RNA sequencing was performed on bone marrow adipocytes and bone marrow stromal cells isolated from sublethally-irradiated mice.
2023-07-31 | GSE227255 | GEO
Project description:RATIONALE: Radiation therapy uses high-energy x-rays to damage cancer cells. Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Combining chemotherapy with bone marrow transplantation may allow the doctor to give higher doses of chemotherapy drugs and kill more tumor cells.
PURPOSE: Phase II trial to study the effectiveness of bone marrow transplantation in treating patients who have hematologic cancer.
| 2004880 | ecrin-mdr-crc