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Effects of Immunecomplexes on primary human monocytes and their differentitation towards osteoclasts

ABSTRACT: Effects of Immunecomplexes on primary human monocytes and their differentitation towards osteoclasts

PROVIDER: PRJNA550389 | ENA |

REPOSITORIES: ENA

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Effects of Immunecomplexes on primary human monocytes and their differentitation towards osteoclasts

Project description:primary human monocytes were isolated from peripheral blood using Stemcell CD14 magnetic cell seperation and incubated over night with 10ng/ml M-CSF and then differentiated with 100ng/ml RANKL for 24hrs in the absence or prescence of 25 mg/ml SIC (immunecomplexes consisting of SpA and IgG) or the appropriate concentration of IgG or SpA alone.

2022-06-21 | GSE133210 | GEO

A novel method to efficiently differentiate human osteoclasts from blood-derived monocytes

Project description:Osteoclasts are the tissue-specific macrophage population of the bone and unique in their bone-resorbing activity. Hence, they are fundamental for bone physiology in health and disease. However, efficient protocols for the isolation and study of primary human osteoclasts are scarce. In this study, we aimed to establish a protocol, which enables the efficient differentiation of functional human osteoclasts from monocytes. To this end, human monocytes were isolated through a double-density gradient from healthy donor blood. The differentiation to macrophages was performed either in cell culture dishes or in Teflon-coated bags. The impact of these two distinct differentiation protocols on the gene expression profile of macrophages was assessed via RNA-Sequencing. The macrophages were then further differentiated to terminal osteoclasts through the addition of Receptor Activator of NF-κB Ligand (RANKL). The yield and function of multinuclear osteoclasts was significantly increased upon initial differentiation of monocytes to macrophages in Teflon-coated bags. Our study has established a novel protocol for the isolation of primary human osteoclasts that improves osteoclastogenesis in comparison to the conventionally used cultivation approach.

2023-12-04 | GSE248902 | GEO

Transcriptional effects of catalytic mTOR inhibiton among LPS-stimulated primary human monocytes

Project description:Transcriptional effects of catalytic mTOR inhibiton among LPS-stimulated primary human monocytes

| PRJNA777550 | ENA

Loss of mutual protection between osteoclasts and chondrocytes in damaged joints: effects on osteoclast-mediated cartilage degradation via matrix metalloproteinases

Project description:Osteoclasts are multinucleated, bone-resorbing cells. However, they also digest cartilage during skeletal maintenance, development and in degradative conditions including osteoarthritis, rheumatoid arthritis and primary bone sarcoma. This study explores the mechanisms behind the osteoclast–cartilage interaction. Human osteoclasts differentiated on acellular human cartilage expressed osteoclast marker genes (e.g. CTSK, MMP9) and proteins (TRAP, VNR), visibly damaged the cartilage surface and released glycosaminoglycan in a contact-dependent manner. Direct co-culture with chondrocytes during differentiation increased large osteoclast formation (p < 0.0001) except when co-cultured on dentine, when osteoclast formation was inhibited (p = 0.0002). Osteoclasts cultured on dentine inhibited basal cartilage degradation (p = 0.012). RNA-seq identified MMP8 overexpression in osteoclasts differentiated on cartilage versus dentine (8.89-fold, p = 0.0133), while MMP9 was the most highly expressed MMP. Both MMP8 and MMP9 were produced by osteoclasts in osteosarcoma tissue. This study suggests that bone-resident osteoclasts and chondrocytes exert mutually protective effects on their ‘native’ tissue. However, when osteoclasts contact non-native cartilage they cause degradation via MMPs. Understanding the role of osteoclasts in cartilage maintenance and degradation might identify new therapeutic approaches for pathologies characterized by cartilage degeneration.

2021-12-01 | GSE166535 | GEO

A novel method to efficiently differentiate human osteoclasts from blood-derived monocytes

Project description:A novel method to efficiently differentiate human osteoclasts from blood-derived monocytes

| PRJNA1046426 | ENA

Transcriptional effects of catalytic mTOR inhibiton among LPS-stimulated primary human monocytes

Project description:To better understand the role of mTOR in regulation of the monocyte response to LPS, we obtained mRNA-seq profiles of primary human monocytes stimulated ex vivo through TLR4, with and without pretreatment with a catalytic mTOR inhibitor (mTORi)

2022-07-29 | GSE187403 | GEO

E-GEOD-51835

Project description:Effects of exercise on gene expression level in human monocytes

2025-01-24 | E-GEOD-51835 | ExpressionAtlas

Murine Osteoclasts: Stat5 flox vs. Stat5 cKO

Project description:Transcriptional profiling of mouse osteoclasts comparing control osteoclasts from Stat5 flox mice with osteoclasts from Stat5 cKO mice. Two-condition experiment, Stat5 flox cells vs. Stat5 cKO cells

2013-12-09 | E-GEOD-51283 | biostudies-arrayexpress

Analysis of psychedelic control of primary human monocytes

Project description:Analysis of psychedelic control of primary human monocytes

| PRJNA1095396 | ENA

ChIP-seq of EGR1 in human primary unstimulated monocytes and in unstimulated human monocytes from three CMML patients

Project description:Identification of EGR1 chromatin localization in human primary monocytes (2 donors), in human primary monocytes from 2 CMML patients with TET2 truncating mutations (high VAF) and in human primary monocytes from 1 CMML patients with TET2 truncating mutations with low VAF.

2021-11-15 | E-MTAB-11132 | biostudies-arrayexpress

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