Mus musculus
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: E-GEOD-43806
PROVIDER: PRJNA187982 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Klf5 controls bone marrow homing of stem cells and progenitors through Rab5-mediated membrane Beta1/Beta2-integrin expression
2015-07-10 | E-GEOD-43806 | ExpressionAtlas
Project description:The Kruppel-like factor 5 (Klf5) regulates pluripotent stem cell self-renewal but its role in somatic stem cells is unknown. Klf5 deficient hematopoietic stem cells and progenitors (HSC/P) fail to engraft after transplantation. This HSC/P defect was associated with impaired bone marrow (BM) homing and lodging and decreased retention in BM. The Klf5Δ/Δ HSC/P homing defect associated with decreased adhesion to fibronectin and expression of membrane-bound β1/β2-integrins. In vivo inducible gain-of-function of Klf5 in HSC translated into increased HSC/P adhesion. The expression of Rab5 family members, mediators of β1/β2-integrin recycling in the early endosome, was decreased in Klf5Δ/Δ HSC/P. Klf5 binds directly to the promoter of Rab5a/b and overexpression of Rab5b rescued the expression of activated β1/β2-integrins, adhesion and BM homing of Klf5Δ/Δ HSC/P. Altogether, these data indicate that Klf5 is indispensable for adhesion, homing, lodging and retention of HSC/P in the BM through Rab5-dependent post-translational regulation of Beta1/Beta2 integrins.
2013-01-30 | GSE43806 | GEO
Project description:The Kruppel-like factor 5 (Klf5) regulates pluripotent stem cell self-renewal but its role in somatic stem cells is unknown. Klf5 deficient hematopoietic stem cells and progenitors (HSC/P) fail to engraft after transplantation. This HSC/P defect was associated with impaired bone marrow (BM) homing and lodging and decreased retention in BM. The Klf5Δ/Δ HSC/P homing defect associated with decreased adhesion to fibronectin and expression of membrane-bound β1/β2-integrins. In vivo inducible gain-of-function of Klf5 in HSC translated into increased HSC/P adhesion. The expression of Rab5 family members, mediators of β1/β2-integrin recycling in the early endosome, was decreased in Klf5Δ/Δ HSC/P. Klf5 binds directly to the promoter of Rab5a/b and overexpression of Rab5b rescued the expression of activated β1/β2-integrins, adhesion and BM homing of Klf5Δ/Δ HSC/P. Altogether, these data indicate that Klf5 is indispensable for adhesion, homing, lodging and retention of HSC/P in the BM through Rab5-dependent post-translational regulation of Beta1/Beta2 integrins. Differential gene expression analyses was performed with Affymetrix GeneChip Mouse 1.0 ST assay. LSK cells from KLF-/- (n=4) and wt (n=5), bred on a C57BL/6 background, was analyzed for differential gene expression using GeneSpring GX11 using student's T-test.
2013-01-30 | E-GEOD-43806 | biostudies-arrayexpress
Project description:Dissemination of prostate cancer (PCa) cells to the bone marrow is an early event in the disease process. In some patients, following initial treatment, disseminated tumor cells (DTC) proliferate to form active metastases after a prolonged period of undetectable disease known as tumor dormancy. Identifying mechanisms of PCa dormancy and reactivation remain a challenge due to the lack of in vitro models. Here, we characterized in vitro PCa dormancy-reactivation by inducing three apparently dormant patient-derived xenograft (PDX) lines to proliferate through tumor cell contact with each other and with bone marrow stroma. Proliferating PCa cells demonstrated tumor cell-cell contact and integrin clustering on immunofluorescence. Global gene expression analyses on proliferating cells cultured on bone marrow stroma revealed a downregulation of TGFB2 in all of the three proliferating PCa PDX lines when compared to their non-proliferating counterparts. Furthermore, constitutive activation of myosin light chain kinase (MLCK), a downstream effector of integrin-beta1 and TGF-beta2, in non-proliferating cells resumed cell proliferation. This cell proliferation was associated with an upregulation of CDK6 and a downregulation of E2F4. Taken together, our data provide evidence to support cellular adhesion and downregulation of TGFB2 as a potential mechanism by which PCa cells escape from dormancy. Targeting TGF-beta 2-associated mechanism could provide novel opportunities to prevent lethal PCa metastasis.
2015-10-26 | GSE64262 | GEO
Project description:Dissemination of prostate cancer (PCa) cells to the bone marrow is an early event in the disease process. In some patients, following initial treatment, disseminated tumor cells (DTC) proliferate to form active metastases after a prolonged period of undetectable disease known as tumor dormancy. Identifying mechanisms of PCa dormancy and reactivation remain a challenge due to the lack of in vitro models. Here, we characterized in vitro PCa dormancy-reactivation by inducing three apparently dormant patient-derived xenograft (PDX) lines to proliferate through tumor cell contact with each other and with bone marrow stroma. Proliferating PCa cells demonstrated tumor cell-cell contact and integrin clustering on immunofluorescence. Global gene expression analyses on proliferating cells cultured on bone marrow stroma revealed a downregulation of TGFB2 in all of the three proliferating PCa PDX lines when compared to their non-proliferating counterparts. Furthermore, constitutive activation of myosin light chain kinase (MLCK), a downstream effector of integrin-beta1 and TGF-beta2, in non-proliferating cells resumed cell proliferation. This cell proliferation was associated with an upregulation of CDK6 and a downregulation of E2F4. Taken together, our data provide evidence to support cellular adhesion and downregulation of TGFB2 as a potential mechanism by which PCa cells escape from dormancy. Targeting TGF-beta 2-associated mechanism could provide novel opportunities to prevent lethal PCa metastasis. Custom Agilent-016162 44K whole human genome expression oligonucleotide microarrays were used to profile dormant and proliferating cells isolated from three separate LuCaP xenograft lines grown in co-culture with bone marrow stromal cells isolated from a patient with PCa bone metastases. RNA from 10 cells was amplified prior to hybridization against a common reference pool of prostate tumor cell lines.
2015-10-26 | E-GEOD-64262 | biostudies-arrayexpress
Project description:Multipotent progenitors (MPP) and common dendritic cell progenitors (CDP) were obtained from mouse bone marrow, followed by in vitro culture with a specific cytokine cocktail and FACS sorting (Felker et al., 2010; Sere et al., 2012). Cells were treated with 10 ng/ml recombinant human TGF-b1 (R&D Systems, Minneapolis, USA) for 2, 4, 8, 12 and 24 h as described (Felker et al., 2010) or left untreated. Untreated multipotent progenitor (MPP) - MPP_0h_1 - MPP_0h_2 - MPP_0h_3 TGF-beta1 treated (2 hours) MPP - MPP_2h_1 - MPP_2h_2 - MPP_2h_3 TGF-beta1 treated (4 hours) MPP - MPP_4h_1 - MPP_4h_2 - MPP_4h_3 TGF-beta1 treated (8 hours) MPP - MPP_8h_1 - MPP_8h_2 - MPP_8h_3 TGF-beta1 treated (12 hours) MPP - MPP_12h_1 - MPP_12h_2 - MPP_12h_3 TGF-beta1 treated (24 hours) MPP - MPP_24h_1 - MPP_24h_2 - MPP_24h_3 Untreated common dendritic cell progenitor (CDP) - CDP_0h_1 - CDP_0h_2 - CDP_0h_3 TGF-beta1 treated (2 hours) CDP - CDP_2h_1 - CDP_2h_2 - CDP_2h_3 TGF-beta1 treated (4 hours) CDP - CDP_4h_1 - CDP_4h_2 - CDP_4h_3 TGF-beta1 treated (8 hours) CDP - CDP_8h_1 - CDP_8h_2 - CDP_8h_3 TGF-beta1 treated (12 hours) CDP - CDP_12h_1 - CDP_12h_2 - CDP_12h_3 TGF-beta1 treated (24 hours) CDP - CDP_24h_1 - CDP_24h_2 - CDP_24h_3
2014-04-15 | E-GEOD-46109 | biostudies-arrayexpress
Project description:Studies of adult human hematopoiesis have until now relied on the expression of CD10 to define lymphoid commitment. We report a novel lymphoid-primed population in human bone marrow that is generated from hematopoietic stem cells (HSC) prior to the onset of CD10 expression and B cell commitment, and is identified by high levels of the homing molecule L-selectin (CD62L). CD10-CD62Lhi progenitors have full lymphoid (B/T/NK) potential, and show reduced myeloid and absent erythroid potential. Genome-wide gene expression analysis demonstrates that the CD10-CD62Lhi population represents an intermediate stage of differentiation between CD34+CD38- HSC and CD34+lin-CD10+ progenitors marked by down-regulation of TAL1 and MPL, upregulation of E2A, CD3E and IL2RG expression, and absent B cell commitment or RAG1/2 expression. Immature CD34+CD1a- thymocytes are also CD62Lhi and L-selectin ligands are expressed at the cortico-medullary junction, suggesting a possible role for L-selectin in human thymic homing. These studies identify the earliest stage of lymphoid priming in human bone marrow. Freshly harvested human bone marrow was ficoll purified, enriched for CD34+, and then FACS sorted. It was then sorted into 3 samples CD34+CD38-, CD34+ CD10- CD62L++, and CD34+ CD10+, with 3 independent biological replicates
2012-08-14 | E-GEOD-35685 | biostudies-arrayexpress
Project description:Vascular smooth muscle cells require beta1 integrin for survival. Following the induced deletion of smooth muscle beta1 integrin, smooth muscle cells undergo apoptosis and arteries become fibrotic. This microarray study on mesenteric arteries 2 weeks after the initiation of beta1 integrin deletion specifically in smooth muscle cells of the adult mouse aimed to examine early changes in expression following deletion.
2013-02-26 | GSE44663 | GEO
Project description:Vascular smooth muscle cells require beta1 integrin for survival. Following the induced deletion of smooth muscle beta1 integrin, smooth muscle cells undergo apoptosis and arteries become fibrotic. This microarray study on mesenteric arteries 2 weeks after the initiation of beta1 integrin deletion specifically in smooth muscle cells of the adult mouse aimed to examine early changes in expression following deletion. Mesenteric arteries from three wild type mixed background and three beta1 integrin smooth muscle knockout mixed background mice are examined.
2013-02-26 | E-GEOD-44663 | biostudies-arrayexpress
Project description:The sympathetic nervous system (SNS) plays a central role in blood pressure regulation. Recent studies have shown that cells of the distal convoluted tubule (DCT) can be stimulated directly via the beta-adrenergic receptor resulting in activation of the NaCl cotransporter NCC. Whether these effects are mediated by the beta1- or beta2-adrenergic receptor is unclear, and the acute signaling cascades rapidly activated by beta-adrenergic receptor stimulation in the DCT are unknown. Here in this study, we aim to identify the rapid salbutamol-mediated (beta2-adrenergic receptor) signaling in the DCT by looking at global protein phosphorylation changes in the mpkDCT cells.
2021-05-17 | PXD019051 | Pride