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The microRNA profiles of extracellular vesicles (EVs) from osteoclasts (OCs) co-cultured with prostate cancer (PCa) cell lines [OCEVmiRNA-seq]

ABSTRACT: Bone metastatic lesions of PCa contain areas of bone destruction and formation that are directed by OCs and osteoblasts (OBs), respectively. OC-derived EVs are reported to maintain normal bone homeostasis; however, there is no study investigating the role of EVs from OCs in the presence of PCa.

ORGANISM(S): Mus musculus

PROVIDER: GSE268548 | GEO | 2024/06/06

REPOSITORIES: GEO

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The target gene investigation in osteoclats (OCs) treated with mmu-miR-5112 enriched in EVs from OCs with prostate cancer (PCa) cells [target_EV-miR-5112]

Project description:Bone metastatic lesions of PCa contain areas of bone destruction and formation that are directed by OCs and osteoblasts (OBs), respectively. OC-derived EVs are reported to maintain normal bone homeostasis; however, there is no study investigating the role of EVs from OCs in the presence of PCa. We identified mmu-miR-5112 enriched in EVs from OCs co-cultured with several PCa cell lines. NGS analyses were performed to investigate predicted target genes of EV-mmu-miR-5112 in OCs.

2024-06-06 | GSE268550 | GEO

The target gene investigation in osteoblats (OBs) treated with mmu-miR-1963 enriched in EVs from OCs with prostate cancer (PCa) cells [target_EV-miR-1963]

Project description:Bone metastatic lesions of PCa contain areas of bone destruction and formation that are directed by OCs and osteoblasts (OBs), respectively. OC-derived EVs are reported to maintain normal bone homeostasis; however, there is no study investigating the role of EVs from OCs in the presence of PCa. We identified mmu-miR-1963 enriched in EVs from OCs co-cultured with several PCa cell lines. NGS analyses were performed to investigate predicted target genes of EV-miR-1963 in OBs.

2024-06-06 | GSE268549 | GEO

The gene expression profiles of maturing osteoclasts (OCs) co-cultured with prostate cancer (PCa) cell lines.

Project description:Bone metastatic lesions of PCa contain areas of bone destruction and formation that are directed by OCs and osteoblasts (OBs), respectively. Bone resorption induced by OCs is a necessary priming event for tumor progression in PCa bone metastasis.; however, the characteristics of OCs affected by PCa have not been fully elucidated. Here, we performed NGS analysis to investigate the characteristics of OCs in the presence of PCa.

2024-06-06 | GSE268422 | GEO

Gene expression analysis in the zebrafish fractured scale

Project description:Bone is a connective tissue which undergoes continuous remodeling, including bone resorption and formation by osteoclasts (OCs) and osteoblasts (OBs), respectively. Recently, extracellular vesicles (EVs) are increasingly appreciated as a regulator of intercellular communication between OCs and OBs. The zebrafish scale is a thin membranous bone embedded in the skin and consists of OBs, OCs, and bone matrix, providing an elegant model to visualize OC-OB communication. Here, we developed a double-transgenic zebrafish line, trap:GFP; osterix:mCherry, which expresses GFP and mCherry under the control of the OC-specific trap (tartrate-resistant acid phosphatase) and OB-specific osterix enhancer, respectively. Utilizing this double-transgenic line, in combination with Hoechst 33342 (Hoe) staining, we isolated four distinct fractions from the scale at 1 day post-fracture by flow cytometry, GFP(–) mCh(+) Hoe(high) (OB fraction), GFP(low) mCh(+) Hoe(high) (OC precursor (pOC) fraction), GFP(high) Hoe(high) (mature OC (mOC) fraction), and mCh(+) Hoe(–) (OB-derived extracellular vesicle (EV) fraction). In this study, we have performed RNA-seq analysis using these four fractions to examine the gene expression profile of each fraction.

2020-04-29 | GSE134330 | GEO

Gene expression of Dcir-/- osteoclasts induced by M-CSF and RANKL

Project description:Purpose: DCIR is an inhibitory type of C-type lectin receptor that regulates osteoclast (OC) formation and functions. This study aimed to find the genes of OCs that could be regulated through DCIR. Method: Bone marrow cells from WT and Dcir-/- mice were cultured in M-CSF for 2 days and the the cells were further cultured in M-CSF and RANKL. RNA profiles were generated by deep sequencing, in triplicate, using Illumina NovaSeq. Results: We detected xxx gense that were higher expression in Dcir-/- OCs, compared with WT OCs, with a fold change ≥1.5 and p value <0.05. Conclusion: Our data showed that Dcir deficiency in OCs changed the gene expression pattern, compared to WT OCs, which are induced by M-CSF and RANKL.

2023-06-07 | GSE223429 | GEO

Differentially enriched miRNAs in EVs derived from young and aged osteocytes of mice

Project description:Vascular calcification often occurs with osteoporosis, a contradictory association called “calcification paradox”. We find that extracellular vesicles (EVs) released from aged bone matrix (AB-EVs) during bone resorption favor adipogenesis rather than osteogenesis of BMSCs and augment calcification of vascular smooth muscle cells (VSMCs). Intravenous or intramedullary injection of AB-EVs promotes bone-fat imbalance and exacerbates Vitamin D3 (VD3)-induced vascular calcification in young or old mice. To explore the involvement of miRNAs in the AB-EVs-induced promotion of adipocyte formation and vascular calcification, the Agilent miRNA array was conducted to compare the miRNA expression profiles in AB-EVs and YB-EVs from mouse bone specimens. Our study uncovers the role of AB-EVs as a messenger for calcification paradox by transferring functional miRNAs.

2022-02-15 | E-MTAB-11417 | biostudies-arrayexpress

Transcriptional profiles of genes in the early stage of osteoclastogenesis

Project description:Osteoclast (OC) differentiation undergoes a two-step process: commitment of hematopoietic progenitor cells to tartrate-resistant acid phosphatase (TRAcP) positive OC precursors (OCPs), and fusion of OCPs into multinucleated OCs. In order to identify transcriptional profiles of genes in the transitional phase between OC commitment and fusion in OCG, AffymetrixM-BM-. Mouse Gene 1.0 ST arrays were performed on total RNA extracted from mouse (SV129/BL6 ) monocytes and pre-osteoclasts (pre-OCs), primed with macrophage colony-stimulated factor (M-CSF) or M-CSF and soluble recombinant receptor activator of NF-M-PM-:B ligand (sRANKL), respectively. The analysis identified 656 RANKL-up or down-regulated in the early stage of osteoclastogenesis. Monocytes isolated from mouse bone marrow were stimulated with M-CSF and soluble RANKL (m + r), or M-CSF alone (m).

2014-02-17 | E-GEOD-54779 | biostudies-arrayexpress

Monocyte Subsets with High Osteoclastogenic Potential and Their Epigenetic Regulation Orchestrated by IRF8 [RNA-Seq]

Project description:Currently, it is unclear if all monocyte subsets exhibit osteoclastogenic potential. Furthermore, the role of lineage determining TFs in regulating OC differentiation on a genome-wide scale remains poorly understood. In this study, we utilized a novel Irf8 conditional knockout (Irf8 cKO) mouse model to characterize the importance of IRF8 in OC progenitor development and epigenetic regulation of OC differentiation. We performed RNA-seq on Irf8 gWT, gKO, cWT and cKO BMMs, preosteoclasts (PreOCs), and OCs. Cells were analyzed prior to (BMMs) and 3 days (PreOCs) and 6 days (OCs) after RANKL stimulation. Here we show that greater a number of genes are significantly upregulated in Irf8 cKO OCs when compared to WT and Irf8 gKO OCs. Altogether, our data shows that Irf8 cKO mice provide more precise/reliable OC-specific transcriptomic results when compared to Irf8 gKO mice.

2020-09-11 | GSE151388 | GEO

Differentially enriched miRNAs in EVs derived from young and aged osteocytes of mice

Project description:Young and Aged osteocytes in bone matrix secreted plenty of extracellular vesicles (EVs) with different functions. We found that EVs released from aged bone matrix (AB-EVs) during bone resorption favor adipogenesis rather than osteogenesis of BMSCs and augment calcification of vascular smooth muscle cells (VSMCs). In this work, we aim to detect the differential regulation microRNAs. Vascular calcification often occurs with osteoporosis, a contradictory association called “calcification paradox”. We find that extracellular vesicles (EVs) released from aged bone matrix (AB-EVs) during bone resorption favor adipogenesis rather than osteogenesis of BMSCs and augment calcification of vascular smooth muscle cells (VSMCs). Intravenous or intramedullary injection of AB-EVs promotes bone-fat imbalance and exacerbates Vitamin D3 (VD3)-induced vascular calcification in young or old mice. To explore the involvement of miRNAs in the AB-EVs-induced promotion of adipocyte formation and vascular calcification, the Agilent miRNA array was conducted to compare the miRNA expression profiles in AB-EVs and YB-EVs from mouse bone specimens. Our study uncovers the role of AB-EVs as a messenger for calcification paradox by transferring functional miRNAs.

2022-02-02 | GSE195931 | GEO

Bone density loci identified by genome-wide association studies segregate a lineage-specific PU.1-dependent gene regulatory network in osteoclasts [ChIP-seq]

Project description:Genome-wide association studies (GWASs) have been instrumental in understanding complex phenotypic traits. However, they have rarely been used to understand lineage-specific pathways and functions that contribute to the trait. In this study, by integrating publicly available lineage-specific enhancers from mesenchymal and myeloid compartments with bone mineral density loci, we were able to segregate osteoblast- and osteoclast (OC)-specific functions. Specifically, in OCs, a PU.1-dependent transcription factor (TF) network was revealed. Further we conducted functional genomic analysis PU.1 and MITF genome wide binding with corresponding gene expression analysis which revealed a TF network essential for OC differentiation. Several of these TFs were regulated by cooperative binding of PU.1 with BRD4 to form superenhancers. Further, PU.1 is essential for conformational changes in the superenhancer region of Nfatc1. In summary, our study demonstrates that utilizing GWASs with genome-wide binding studies as a filter helps to decipher lineage-specific pathways contributing to complex disease states.

2018-04-10 | GSE107294 | GEO

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