The neural crest is a source of mesenchymal stem cells with specialized hematopoietic stem-cell-niche function
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE61695 | GEO | 2014/10/15
SECONDARY ACCESSION(S): PRJNA261856
REPOSITORIES: GEO
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Project description:Mesenchymal stem cells (MSCs) And osteolineage cells contribute to the hematopoietic stem cell (HSC) Niche in the bone marrow of long bones. However, Their developmental relationships remain unclear. Here we demonstrate that different MSC populations in the developing marrow of long bones have distinct functions. Proliferative mesoderm-derived nestin- MSCs participate in fetal skeletogenesis, And lose MSC activity soon after birth. In contrast, Quiescent neural-crest-derived nestin+ Cells in the same bones preserve MSC activity, But do not generate fetal chondrocytes. Instead, They differentiate into HSC-niche-forming MSCs, Helping to establish the HSC niche by secreting Cxcl12. Perineural migration of these cells to the bone marrow requires the ErbB3 receptor. The neonatal Nestin-GFP+ PDGFR- Cell population also contains Schwann-cell precursors, But does not comprise mature Schwann cells. Thus, In the developing bone marrow HSC-niche-forming MSCs share a common origin with sympathetic peripheral neurons and glial cells, And ontogenically distinct MSCs have non-overlapping functions in endochondrogenesis and HSC niche formation. Total RNA was isolated from small numbers of FACS sorted stromal cells, obtained from neonatal Nes-Gfp bone marrow preparations (2 biological replicates). Each independent set of samples was obtained from pooled skeletal elements (long bones and sterna) form multiple littermates.
2014-10-15 | E-GEOD-61695 | biostudies-arrayexpress
Project description:Myeloproliferative neoplasms (MPNs) are diseases caused by mutations in the haematopoietic stem cell (HSC) compartment. Most MPN patients have a common acquired mutation of Janus kinase 2 (JAK2) gene in HSCs that renders this kinase constitutively active, leading to uncontrolled cell expansion. The bone marrow (BM) microenvironment might contribute to the clinical outcomes of this common event. We previously showed that BM nestin+ mesenchymal stem cells (MSCs) innervated by sympathetic nerve fibres regulate normal HSCs. Here we demonstrate that abrogation of this regulatory circuit is essential for MPN pathogenesis. Sympathetic nerve fibres, supporting Schwann cells and nestin+ MSCs are consistently reduced in the BM of MPN patients and mice expressing the human JAK2V617F mutation in HSCs. Unexpectedly, MSC reduction is not due to differentiation but is caused by BM neural damage and Schwann cell death triggered by interleukin-1b produced by mutant HSCs. In turn, in vivo depletion of nestin+ cells or their production of CXCL12 expanded mutant HSCs and accelerated MPN progression. In contrast, administration of neuroprotective or sympathomimetic drugs prevented mutant HSC expansion. Treatment with b3-adrenergic agonists that restored the sympathetic regulation of nestin+ MSCs prevented the loss of these cells and blocked MPN progression by indirectly reducing leukaemic stem cells. Our results demonstrate that mutant HSC-driven niche damage critically contributes to disease manifestation in MPN and identify niche-forming MSCs and their neural regulation as promising therapeutic targets. CD45- CD31- Ter119- GFP+ cells were sorted from the BM of Nes-gfp;Mx1-cre;JAK2-V617F mice and control littermates 6 weeks after pIpC treatment and were subjected to RNA sequencing. Each sample was pooled from 3 animals of the same genotype.
2014-03-12 | E-GEOD-55798 | biostudies-arrayexpress
Project description:Myeloproliferative neoplasms (MPNs) are diseases caused by mutations in the haematopoietic stem cell (HSC) compartment. Most MPN patients have a common acquired mutation of Janus kinase 2 (JAK2) gene in HSCs that renders this kinase constitutively active, leading to uncontrolled cell expansion. The bone marrow (BM) microenvironment might contribute to the clinical outcomes of this common event. We previously showed that BM nestin+ mesenchymal stem cells (MSCs) innervated by sympathetic nerve fibres regulate normal HSCs. Here we demonstrate that abrogation of this regulatory circuit is essential for MPN pathogenesis. Sympathetic nerve fibres, supporting Schwann cells and nestin+ MSCs are consistently reduced in the BM of MPN patients and mice expressing the human JAK2V617F mutation in HSCs. Unexpectedly, MSC reduction is not due to differentiation but is caused by BM neural damage and Schwann cell death triggered by interleukin-1b produced by mutant HSCs. In turn, in vivo depletion of nestin+ cells or their production of CXCL12 expanded mutant HSCs and accelerated MPN progression. In contrast, administration of neuroprotective or sympathomimetic drugs prevented mutant HSC expansion. Treatment with b3-adrenergic agonists that restored the sympathetic regulation of nestin+ MSCs prevented the loss of these cells and blocked MPN progression by indirectly reducing leukaemic stem cells. Our results demonstrate that mutant HSC-driven niche damage critically contributes to disease manifestation in MPN and identify niche-forming MSCs and their neural regulation as promising therapeutic targets. Total RNA was isolated from BM CD45- CD31- Ter119- Nes-GFP+ cells obtained from Nes-gfp mice 10 weeks after transplantation with Mx1-cre;JAK2-V617F (n=3) or control cells (n=1). RNA was amplified using the NuGen Ovation system and hybridized to the Affymetrix MoGene 1.0 ST array.
2014-03-12 | E-GEOD-55801 | biostudies-arrayexpress
Project description:Myeloproliferative neoplasms (MPNs) are diseases caused by mutations in the haematopoietic stem cell (HSC) compartment. Most MPN patients have a common acquired mutation of Janus kinase 2 (JAK2) gene in HSCs that renders this kinase constitutively active, leading to uncontrolled cell expansion. The bone marrow (BM) microenvironment might contribute to the clinical outcomes of this common event. We previously showed that BM nestin+ mesenchymal stem cells (MSCs) innervated by sympathetic nerve fibres regulate normal HSCs. Here we demonstrate that abrogation of this regulatory circuit is essential for MPN pathogenesis. Sympathetic nerve fibres, supporting Schwann cells and nestin+ MSCs are consistently reduced in the BM of MPN patients and mice expressing the human JAK2V617F mutation in HSCs. Unexpectedly, MSC reduction is not due to differentiation but is caused by BM neural damage and Schwann cell death triggered by interleukin-1b produced by mutant HSCs. In turn, in vivo depletion of nestin+ cells or their production of CXCL12 expanded mutant HSCs and accelerated MPN progression. In contrast, administration of neuroprotective or sympathomimetic drugs prevented mutant HSC expansion. Treatment with b3-adrenergic agonists that restored the sympathetic regulation of nestin+ MSCs prevented the loss of these cells and blocked MPN progression by indirectly reducing leukaemic stem cells. Our results demonstrate that mutant HSC-driven niche damage critically contributes to disease manifestation in MPN and identify niche-forming MSCs and their neural regulation as promising therapeutic targets.
2014-03-12 | GSE55801 | GEO
Project description:Myeloproliferative neoplasms (MPNs) are diseases caused by mutations in the haematopoietic stem cell (HSC) compartment. Most MPN patients have a common acquired mutation of Janus kinase 2 (JAK2) gene in HSCs that renders this kinase constitutively active, leading to uncontrolled cell expansion. The bone marrow (BM) microenvironment might contribute to the clinical outcomes of this common event. We previously showed that BM nestin+ mesenchymal stem cells (MSCs) innervated by sympathetic nerve fibres regulate normal HSCs. Here we demonstrate that abrogation of this regulatory circuit is essential for MPN pathogenesis. Sympathetic nerve fibres, supporting Schwann cells and nestin+ MSCs are consistently reduced in the BM of MPN patients and mice expressing the human JAK2V617F mutation in HSCs. Unexpectedly, MSC reduction is not due to differentiation but is caused by BM neural damage and Schwann cell death triggered by interleukin-1b produced by mutant HSCs. In turn, in vivo depletion of nestin+ cells or their production of CXCL12 expanded mutant HSCs and accelerated MPN progression. In contrast, administration of neuroprotective or sympathomimetic drugs prevented mutant HSC expansion. Treatment with b3-adrenergic agonists that restored the sympathetic regulation of nestin+ MSCs prevented the loss of these cells and blocked MPN progression by indirectly reducing leukaemic stem cells. Our results demonstrate that mutant HSC-driven niche damage critically contributes to disease manifestation in MPN and identify niche-forming MSCs and their neural regulation as promising therapeutic targets.
2014-03-12 | GSE55798 | GEO
Project description:Whereas the cellular basis of the hematopoietic stem cell (HSC) niche in the bone marrow has been characterized, the nature of the fetal liver (FL) niche is not yet elucidated. We show that Nestin+NG2+ pericytes associate with portal vessels, forming a niche promoting HSC expansion. Nestin+NG2+ cells and HSCs scale during development with the fractal branching patterns of portal vessels, tributaries of the umbilical vein. After closure of the umbilical inlet at birth, portal vessels undergo a transition from Neuropilin-1+Ephrin-B2+ artery to EphB4+ vein phenotype, associated with a loss of peri-portal Nestin+NG2+ cells and emigration of HSCs away from portal vessels. These data support a model in which HSCs are titrated against a peri-portal vascular niche with a fractal-like organization enabled by placental circulation. Characterization of the transcriptome of fetal liver and adult bone marrow niche using RNA-seq
2015-12-03 | E-GEOD-72341 | biostudies-arrayexpress
Project description:Objective: Craniofacial bone defects caused by injuries and congenital diseases are a formidable challenge to clinicians. Research has shown promise in using bone marrow mesenchymal stem cells (BM-MSCs) from limb bones for craniofacial bone regeneration; yet little is known about the potential of BM-MSCs from craniofacial bones. This study compared BM-MSCs isolated from limb and craniofacial bones in pigs, a preclinical model closely resembling humans. Design: Bone marrow was aspirated from the tibia and mandible of four-month-old pigs (n=4), followed by BM-MSC isolation, culture-expansion and confirmation by flow cytometry. Proliferation rates were compared using population doubling times. Osteogenic differentiation was evaluated by quantifying alkaline phosphatase (ALP) activity. Total mRNA was extracted from freshly isolated BM-MSCs and analyzed to compare gene expressions of tibial and mandibular BM-MSCs using an Affymetrix GeneChip porcine genome array, followed by real-time RT-PCR evaluation of two neural crest markers. Results: BM-MSCs from both locations expressed MSC markers without expression of hematopoietic markers. Mandibular BM-MSCs proliferated significantly faster than tibial BM-MSCs. Without osteogenic inducers, mandibular BM-MSC alkaline phosphatase activities were 3.3-fold greater than those of tibial origin. Microarray analysis identified 383 differentially expressed genes in mandibular and tibial BM-MSCs, including higher expression of cranial neural crest-related genes nestin and BMP-4 in mandibular BM-MSCs, a trend also confirmed by real-time RT-PCR. Among differently expressed genes, only 47 showed greater than 1.5-fold differences in expression. Conclusions: These data indicate that despite many similarities in gene expression, mandibular BM-MSCs express of number of genes differently than tibial BM-MSCs and have a phenotypic profile that may make them advantageous for craniofacial bone regeneration. Bone marrow was aspirated from the mandibular symphyseal region and the tibia of 3 pigs. Mesenchymal stem cells were isolated from the bone marrow and cultured to 80% confluence. Cells were harvested for total RNA extraction and the RNA was analyzed by Affymetrix GeneChip porcine genome array.
2016-05-14 | E-GEOD-81430 | biostudies-arrayexpress
Project description:The bone marrow (BM) niche regulates multiple HSC processes. Clinical treatment for hematological malignancies, by HSC transplantation often requires preconditioning total body irradiation, which severely and irreversibly impairs the BM niche and HSC regeneration. Novel strategies to enhance HSC regeneration in irradiated BM are needed. We compared the effects of niche factors EGF, FGF2 and PDGFB on HSC hematopoietic regeneration using human MSCs that were transduced with these factors via lentiviral vectors. Among above niche factors tested, PDGFB-MSCs most significantly improved human hematopoietic cell engraftment in immunodeficient mice. PDGFB-MSC-treated BM more efficiently enhanced transplanted human HSC self-renewal in secondary transplantations from primary recipients. Although PDGFB-MSCs did not directly increase HSC expansion in vitro, GSEA revealed anti-apoptotic signaling being increased in PDGFB-MSCs versus GFP-MSCs. PDGFB-MSCs had enhanced survival and expansion after transplantation, leading to an enlarged humanized niche cell pool. Our study demonstrates the efficacy of MSC-mediated niche factors in clinical HSC transplantation for patients.
2020-06-22 | GSE113857 | GEO
Project description:Objective: Craniofacial bone defects caused by injuries and congenital diseases are a formidable challenge to clinicians. Research has shown promise in using bone marrow mesenchymal stem cells (BM-MSCs) from limb bones for craniofacial bone regeneration; yet little is known about the potential of BM-MSCs from craniofacial bones. This study compared BM-MSCs isolated from limb and craniofacial bones in pigs, a preclinical model closely resembling humans. Design: Bone marrow was aspirated from the tibia and mandible of four-month-old pigs (n=4), followed by BM-MSC isolation, culture-expansion and confirmation by flow cytometry. Proliferation rates were compared using population doubling times. Osteogenic differentiation was evaluated by quantifying alkaline phosphatase (ALP) activity. Total mRNA was extracted from freshly isolated BM-MSCs and analyzed to compare gene expressions of tibial and mandibular BM-MSCs using an Affymetrix GeneChip porcine genome array, followed by real-time RT-PCR evaluation of two neural crest markers. Results: BM-MSCs from both locations expressed MSC markers without expression of hematopoietic markers. Mandibular BM-MSCs proliferated significantly faster than tibial BM-MSCs. Without osteogenic inducers, mandibular BM-MSC alkaline phosphatase activities were 3.3-fold greater than those of tibial origin. Microarray analysis identified 383 differentially expressed genes in mandibular and tibial BM-MSCs, including higher expression of cranial neural crest-related genes nestin and BMP-4 in mandibular BM-MSCs, a trend also confirmed by real-time RT-PCR. Among differently expressed genes, only 47 showed greater than 1.5-fold differences in expression. Conclusions: These data indicate that despite many similarities in gene expression, mandibular BM-MSCs express of number of genes differently than tibial BM-MSCs and have a phenotypic profile that may make them advantageous for craniofacial bone regeneration.
2016-05-14 | GSE81430 | GEO
Project description:Whereas the cellular basis of the hematopoietic stem cell (HSC) niche in the bone marrow has been characterized, the nature of the fetal liver (FL) niche is not yet elucidated. We show that Nestin+NG2+ pericytes associate with portal vessels, forming a niche promoting HSC expansion. Nestin+NG2+ cells and HSCs scale during development with the fractal branching patterns of portal vessels, tributaries of the umbilical vein. After closure of the umbilical inlet at birth, portal vessels undergo a transition from Neuropilin-1+Ephrin-B2+ artery to EphB4+ vein phenotype, associated with a loss of peri-portal Nestin+NG2+ cells and emigration of HSCs away from portal vessels. These data support a model in which HSCs are titrated against a peri-portal vascular niche with a fractal-like organization enabled by placental circulation.
2015-12-03 | GSE72341 | GEO