Project description:To compare mRNA expression diffrence between macrophage M2 treated with lnc-M2_siRNA and the control macrophage M2 cells, we performed microarray using Arraystar Human LncRNA + mRNA Microarray v3.0 (8×60K) platform
Project description:The macrophages in tomor microenvironment in were alike M2 macrophages which contribute to tumor progression and migration. Since macrophages can secret lots of exosomes and M2 macrophage can induce the imbalance of Treg/Th17 ratio in EOC tumor environment, we want to investage the different expression of miRNA between the exosomes secreted by monocyte and M2 macrophage. Thus to see if the microRNA in exosomes secreted from M2 macrophage paly a big role in the T cell imbalance.
Project description:To compare lncRNA&mRNA expression diffrence between macrophage M0 and macrophage M2 cells, we performed microarray using Arraystar Human LncRNA + mRNA Microarray v3.0 (8×60K) platform
Project description:BRD4 inhibition suppressed M2 macrophage polarization. Particularly, we deeply investigated the underlying molecular mechanism of how BRD4 epigenetically regulate M2 genes expression. And finished the cut&tag experiment using BRD4, H3K27ac, IRF4 as antibody to find out the binding sites change in M2 macrophage treated with ARV825.
Project description:Exercise benefits M2 macrophage polarization, energy homeostasis and protects against obesity partially through exercise-induced circulating factors. Here, by unbiased quantitative proteomics on serum samples from sedentary and exercised mice, we identify parvalbumin as a circulating factor suppressed by exercise. Parvalbumin functions as a non-competitive CSF1R antagonist to inhibit M2 macrophage activation and energy expenditure in adipose tissue. More importantly, serum concentrations of parvalbumin positively correlate with obesity in mouse and human, while treating mice with a recombinant parvalbumin blocker prevents its interaction with CSF1R and promotes M2 macrophage polarization and ameliorates diet-induced obesity. Thus, although further studies are required to assess the significance of parvalbumin in mediating the effects of exercise, our results implicate parvalbumin as a potential therapeutic strategy against obesity.
Project description:In order to find the M2 type macrophage secretion miRNA mediated by shear stress, and then regulate the bone marrow mesenchymal stem
Project description:Polarization of macrophages to M1 or M2 cells is important for mounting responses against bacterial and helminth infection respectively. Jumonji domain containing 3 (JMJD3), a histone 3 K27 demethylase, has been implicated in the activation of macrophages. Here we show that JMJD3 is essential for M2 macrophage polarization to helminth infection and chitin, though JMJD3 is dispensable for M1 responses. Furthermore, Jmjd3 is critical for proper bone marrow macrophage differentiation in a demethylase activity-dependent manner. Jmjd3 deficiency affected trimethylation of H3K27 in only a limited numbers of genes. Among them, we identified Irf4 as the target transcription factor critical for controlling M2 macrophage polarization. Collectively, these results show that JMJD3-mediated H3K27 demethylation is critical for regulating M2 macrophage development leading to anti-helminth host responses. This SuperSeries is composed of the SubSeries listed below.
Project description:Mycobacterium infection gives rise to granulomas predominantly composed of inflammatory M1-like macrophages, with bacteria-permissive M2 macrophages also detected in deep granulomas. Our histological analysis of Mycobacterium bovis bacillus Calmette-Guerin-elicited granulomas in guinea pigs revealed that S100A9-expressing neutrophils bordered a unique M2 niche within the inner circle of concentrically multilayered granulomas. We evaluated the effect of S100A9 on macrophage M2 polarization based on guinea pig studies. S100A9-deficient mouse neutrophils abrogated M2 polarization, which was critically dependent on COX-2 signaling in neutrophils. Mechanistic evidence suggested that nuclear S100A9 interacts with C/EBPβ, which cooperatively activates the Cox-2 promoter and amplifies prostaglandin E2 production, followed by M2 polarization in proximal macrophages. Since the M2 populations in guinea pig granulomas were abolished via treatment with celecoxib, a selective COX-2 inhibitor, we propose the S100A9/Cox-2 axis as a major pathway driving M2 niche formation in granulomas.
Project description:BRD4 inhibition suppressed M2 macrophage polarization. Particularly, we deeply investigated the underlying molecular mechanism of how BRD4 regulate M2 genes expression. And finished this RNA-seq
