Identify molecules regulated by glucosylceramide synthase in mouse osteoblasts.
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ABSTRACT:
PROVIDER: PRJNA729440 | ENA |
REPOSITORIES: ENA
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Project description:To identify molecules regulated by glucosylceramide synthase in osteoblasts, we conducted microarray analysis using samles treated with the inhibitors of glucosylceramide synthase.
2021-08-30 | GSE174323 | GEO
Project description:Osteoarthritis (OA) is the most common joint disease and this is a major cause of joint pain and disability in the aging population. Its etiology is multifactorial (i.e., age, obesity, joint injury, genetic predisposition), and the pathophysiologic process affects the entirety of the joint (Martel-Pelletier J et al. Osteoarthritis. Nature reviews Disease primers. 2016;2:16072). Although it is not yet clear if it precedes or occurs subsequently to cartilage damage, subchondral bone sclerosis is an important feature in OA pathophysiology (Goldring SR et al. Changes in the osteochondral unit during osteoarthritis: structure, function and cartilage-bone crosstalk. Nat Rev Rheumatol. 2016;12:632-44). It is characterized by local bone resorption and the accumulation of weakly mineralized osteoid substance (Bailey AJ et al. Phenotypic expression of osteoblast collagen in osteoarthritic bone: production of type I homotrimer. Int J Biochem Cell Biol. 2002;34:176-82). Subchondral bone sclerosis is suspected to be linked to cartilage degradation, not only by modifying the mechanical stresses transmitted to the cartilage, but also by releasing biochemical factors with an activity on cartilage metabolism (Sanchez C et al. Osteoblasts from the sclerotic subchondral bone downregulate aggrecan but upregulate metalloproteinases expression by chondrocytes. This effect is mimicked by interleukin-6, -1beta and oncostatin M pre-treated non-sclerotic osteoblasts. Osteoarthritis Cartilage. 2005;13:979-87; Sanchez C et al. Subchondral bone osteoblasts induce phenotypic changes in human osteoarthritic chondrocytes. Osteoarthritis Cartilage. 2005;13:988-97; Westacott CI et al J. Alteration of cartilage metabolism by cells from osteoarthritic bone. Arthritis Rheum. 1997;40:1282-91. We have previously demonstrated that osteoblasts isolated from subchondral OA bone exhibited an altered phenotype. More precisely, we showed that osteoblasts coming from the thickening (called sclerotic, SC) of subchondral bone located just below a cartilage lesion produced higher levels of alkaline phosphatase, interleukin (IL)-6, IL-8, prostaglandinE2, vascular endothelial growth factor (VEGF), matrix metalloproteinase (MMP)-9 and transforming growth factor(TGF)-β1 and type I collagen than osteoblasts coming from the non-thickening neighboring area (called non-sclerotic area, NSC) (Sanchez C et al. Phenotypic characterization of osteoblasts from the sclerotic zones of osteoarthritic subchondral bone. Arthritis Rheum. 2008;58:442-55; Sanchez C et al. Regulation of subchondral bone osteoblast metabolism by cyclic compression. Arthritis Rheum. 2012;64:1193-203.) To compare secretome of cells living in different in vivo conditions is useful, not only to better understand the pathological mechanisms underlying changes in OA subchondral bone, but also to identify soluble biomarkers potentially reflecting these changes. Using our well-characterised human subchondral osteoblast culture model, we compared the secretome of osteoblasts coming from sclerotic and non sclerotic OA subchondral bone. This approach allowed to identify changes in secretome that contribute to explain some subchondral bone abnormalities in OA and to propose osteomodulin and fibulin-3 as potential biomarkers of OA subchondral bone remodelling.
2018-03-20 | PXD008494 | Pride
Project description:To screen mRNAs specifically regulated by mTORC1, a global mRNA expression profile in calvarial osteoblasts (OBs) from mice with or without OB-specific Tsc1 knockout was developed using microarray. Wild type (WT) or OB-specific Tsc1 knockout (KO) mice were sacrificed, with calvarial osteoblasts harvested and subjected to total RNA extraction.
2015-11-07 | E-GEOD-74781 | biostudies-arrayexpress
Project description:Identified a series of miRNAs transcriptionally regulated by vitamin D treatment within osteoblasts. Several miRNAs were validated in dose escalation experiments. Furthermore, downstream miRNA targets were appraised and found to regulate target message and protein levels. These findings were assessed in early and late passaged osteoblasts and found an age-dependent regulation of some miRNAs, while others were considered constituitiously expressed. Inhibitor studies of one key bone-related miRNA demonstrated the importance of this miRNA to regulate vitamin D-mediate osteoblastic differentiation during mineralizaition. Three independent sets of passage 8 primary human osteoblasts were either treated with vehicle (ethanol) or 1,25D3 (10nM) for 6 hours. Total RNA was collected using the miRNA Vana kit (ABI) and then quality assessed, and sent for miRNA array processesing.
2012-07-31 | E-GEOD-34144 | biostudies-arrayexpress
Project description:Identified a series of miRNAs transcriptionally regulated by vitamin D treatment within osteoblasts. Several miRNAs were validated in dose escalation experiments. Furthermore, downstream miRNA targets were appraised and found to regulate target message and protein levels. These findings were assessed in early and late passaged osteoblasts and found an age-dependent regulation of some miRNAs, while others were considered constituitiously expressed. Inhibitor studies of one key bone-related miRNA demonstrated the importance of this miRNA to regulate vitamin D-mediate osteoblastic differentiation during mineralizaition.
2012-08-01 | GSE34144 | GEO
Project description:Single cell hibernation cultures identify molecules dispensable for haematopoietic stem cell self-renewal
| PRJNA672062 | ENA
Project description:To screen mRNAs specifically regulated by mTORC1, a global mRNA expression profile in calvarial osteoblasts (OBs) from mice with or without OB-specific Tsc1 knockout was developed using microarray.
2015-11-07 | GSE74781 | GEO
Project description:We report the application of RNA immunoprecipitation sequencing technology to identify targets of RNA-binding protein, Samd4, in osteoblasts. By obtaining sequences from immunoprecipitated RNA, we generated several mRNAs which could be bound by Samd4 in mouse osteoblasts.
2016-12-03 | GSE90818 | GEO
Project description:Osteoblasts are a key component of the endosteal hematopoietic stem cell (HSC) niche and have long been recognized with strong hematopoietic supporting activity. Osteoblast conditioned media (OCM) enhances the growth of hematopoietic progenitors in culture and modulate their engraftment activity. We aimed to characterize the hematopoietic supporting activity of OCM by comparing the secretome of immature osteoblasts to that of their precursor, mesenchymal stromal cells (MSC). Over 300 secreted proteins were quantified by mass spectroscopy in media conditioned with MSC or osteoblasts, with 47 being differentially expressed.
2021-11-15 | MSV000088384 | MassIVE