Murine Bone Marrow Macrophages: Control vs. RANKL Stimulated
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ABSTRACT: To identify the microRNAs that are involved in osteoclastogenesis, microRNA expression profiles in mouse bone marrow macrophages (BMMs) stimulated with RANKL (BMOc) were compared with that of control untreated BMMs. These results provide insights into the mechanisms to regulate osteoclastogenesis and bone resorption activities in osteoclasts by microRNA. BMMs were cultured with 20 ng/ml M-CSF in the presence or absence of 50 ng/ml RANKL for 24 hours. Cells were collected for total RNA isolation, and were subjected to microRNA array analysis.
Project description:GDF11 treatment leads to bone loss in mice and strongly stimulates RANKL-induced osteoclastogenesis of bone marrow-derived macrophages (BMMs) in vitro. We used microarrays to identified distinct classes of up-regulated genes in BMMs after GDF11 treatment. Mouse BMMs were treated with or without GDF11 for RNA extraction and and hybridization on Affymetrix microarrays
Project description:To identify the microRNAs that are involved in osteoclastogenesis, microRNA expression profiles in mouse bone marrow macrophages (BMMs) stimulated with RANKL (BMOc) were compared with that of control untreated BMMs. These results provide insights into the mechanisms to regulate osteoclastogenesis and bone resorption activities in osteoclasts by microRNA.
Project description:Overall goal was to look for the differentially expressed genes between receptor activator of nuclear factor kappa-B ligand (RANKL)-stimulated wild type (WT) bone marrow macrophages (BMMs) and the BMMs in which the expression or the enzyme activity of cyclooxygenase-2 (Cox2), the major enzyme for prostaglandin E2 (PGE2) synthesis, is absent. For this purpose, two separate microarrays (experiment 1 and 2) were done. In both the experiments, Serum Amyloid A3 (Saa3) was one of the most highly differentially expressed gene. For experiment 1, BMMs were isolated from the bone marrow of Cox2 knockout (KO) and WT mice. Out of the three sample groups, two were treated with 30 ng/ml each of macrophage-colony stimulating factor (M-CSF) and RANKL, while the third group was treated with M-CSF only, for 1 day. Two of the sample groups had n=3 biological replicates (i.e. samples), while the third one had n=4 biological replicates. The differential gene expression comparisons among the sample groups were done as (A) WT+MCSF+RANKL_d1 versus Cox2KO+MCSF+RANKL_d1 and (B) WT+MCSF+RANKL_d1 versus WT+MCSF_d1. For experiment 2 also, BMMs were obtained from Cox2 KO and WT mice. All the four sample groups were treated with M-CSF and RANKL for 3 days. All the four sample groups had n=4 biological replicates. One of the WT sample group was also treated with an inhibitor of Cox2 activity,NS398 (0.1 µm) and one of the KO sample group was also treated with the product of Cox2 enzyme, PGE2 (1 µm). The differential gene expression comparisons among the sample groups were done as (A) WT+MCSF+RANKL_d3 versus Cox2KO+MCSF+RANKL_d3; (B) WT+MCSF+RANKL_d3 versus WT+MCSF+RANKL+NS398_d3 and (C) Cox2KO+MCSF+RANKL+PGE2_d3 versus Cox2KO+MCSF+RANKL_d3.
Project description:GDF11 treatment leads to bone loss in mice and strongly stimulates RANKL-induced osteoclastogenesis of bone marrow–derived macrophages (BMMs) in vitro. We used microarrays to identified distinct classes of up-regulated genes in BMMs after GDF11 treatment.
Project description:To screen for altered gene expression during osteoclastogenesis, RANKL-treated BMM cells were subjected to gene expression profiling. BMM cells were treated with M-CSF and RANKL for 0, 1, 2 and 3 days. Total RNA was isolated and analyzed by gene expression microarray using the MouseRef-8 v2.0 Expression BeadChip.
Project description:MicroRNA expression profiling of human Hep3B and HepG2 HCC cells comparing parental cancer cells with stable HBx-transfectants In this study,two pairs of control and HBx-overexpressing HCC cells were used to acquire expression profiles of a total of microRNA. miRNA microarray analysis was performed with mirVana miRNA Bioarrays V1 (Ambion) according to the manufacturerM-bM-^@M-^Ys instructions
Project description:Bone marrow derived macrophages (BMM) from Notch2tm1.1Ecan, harboring a NOTCH2 gain-of-function mutation, and control mice were cultured with macrophage colony stimulating factor (M-CSF) and receptor activator of NF-kB ligand (RANKL). Bulk RNA-Seq revealed enhanced cell metabolism, aerobic respiration, and mitochondrial function, all associated with osteoclastogenesis, in Notch2tm1.1Ecan cells. Single cell RNA-Seq data of BMMs treated with M-CSF or M-CSF and RANKL for 3 days identified 11 well-defined cellular clusters. There was an increased number of cells expressing gene markers associated with the osteoclast and with related clusters in Notch2tm1.1Ecan than in control BMMs.
Project description:Bone marrow derived macrophages (BMM) from Notch2tm1.1Ecan, harboring a NOTCH2 gain-of-function mutation, and control mice were cultured with macrophage colony stimulating factor (M-CSF) and receptor activator of NF-kB ligand (RANKL). Bulk RNA-Seq revealed enhanced cell metabolism, aerobic respiration, and mitochondrial function, all associated with osteoclastogenesis, in Notch2tm1.1Ecan cells. Single cell RNA-Seq data of BMMs treated with M-CSF or M-CSF and RANKL for 3 days identified 11 well-defined cellular clusters. There was an increased number of cells expressing gene markers associated with the osteoclast and with related clusters in Notch2tm1.1Ecan than in control BMMs.
Project description:Irf8 functions as negative regulator of osteoclastogenesis. Genetic deletion of Irf8 in mice results in osteoporosis, a low bone mass state caused by increased osteoclast activity. However, the effects of Irf8 ablation on genome wide regulation of osteoclast-specific genes is unknown. We performed RNA-seq analysis of Irf8-/- and Irf8+/+ bone marrow macrophages (BMMs) prior to (day 0) and after RANKL treatment (day 4 and day 8). Additionally, we have identified a novel IRF8 mutation in humans, that is associated with increased osteoclast activity and susceptibility to Multiple Idiopathic Cervical Root Resorption (MICRR). To gain insights into the functional consequences of human IRF8 mutation (hIRF8G388S) on osteoclastogenesis, we performed RNA-seq analysis of Irf8-/- BMMs transduced with hIRF8WT, hIRF8G388S, and a larger deletion construct hIRF8379-389, followed by RANKL treatment. Comparative studies in Irf8-/- and hIRF8G388S cells show that IRF8 deficiency promotes significant enhancement of osteoclast-specific transcripts.
Project description:To examine the effect of estrogen receptor alpha for the miRNA expression, total RNA extracted from whole embryos at E18.5 of wild type and Estrogen Receptor alpha knock-out mice Two group experiment (wild type and ER alpha KO)