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Identification of Fcmr-dependent heterogeneity in tumor associated mononuclear phagocytes

ABSTRACT: Identification of Fcmr-dependent heterogeneity in tumor associated mononuclear phagocytes

PROVIDER: PRJNA534528 | ENA |

REPOSITORIES: ENA

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Identification of Fcmr-dependent heterogeneity in tumor associated mononuclear phagocytes

Project description:The mononuclear phagocytic system (MPS) is characterized by functional diversity and plasticity, including within the tumor microenvironment (TME). Tumor-associated mononuclear phagocytes (TMPs) within the TME come from various ontological origins. To determine how Fcmr deficiency might impact the functional heterogeneity of mature mononuclear phagocytes (MPs) within the TME, we performed single-cell RNA sequencing (scRNAseq) on MPs isolated from B16 tumors resected from Fcmr-/- and Fcmr+/+ mice. To evaluate a homogenous population of MPs within the TME we chose to examine cells harboring expression of markers found in more mature, differentiated MPs. Therefore, we then sorted MerTk+ CD64+ TMPs by FACS and subjected these cells to single-cell transcriptomic analyses using the Chromium 10X Genomics platform. We obtained RNAseq profiles from 6352 Fcmr+/+ and 7999 Fcmr-/- TMPs.

2019-06-18 | GSE130287 | GEO

cecum mononuclear phagocytes

Project description:scRNAseq of cecum mononuclear phagocytes of PBS/LPS-treated mice

| PRJEB46461 | ENA

ImmGen ULI: OpenSource Mononuclear Phagocytes Project

Project description:Primary RNASeq data for progenitor, resident, and stimulated (C.alb, LPS, injury, APAP+ starved overnight and pIC) mononuclear phagocytes from fourteen organs.

2018-11-03 | GSE122108 | GEO

ImmGen ULI: OpenSource Mononuclear Phagocytes Project

Project description:ImmGen ULI: OpenSource Mononuclear Phagocytes Project

| PRJNA503607 | ENA

Mononuclear phagocytes in muscle after notexin injury in C57Bl/6, Cx3cr1-/-, Ccl2-/-,Cx3cr1-/-Ccl2-/- mice

Project description:Muscle injury triggers inflammation in which infiltrating mononuclear phagocytes are crucial for tissue regeneration. The interaction of the CCL2/CCR2 and CX3CL1/CX3CR1 chemokine axis that guides phagocyte infiltration is incompletely understood. Here, we show that CX3CR1 deficiency promotes muscle repair and rescues Ccl2-/- mice from impaired muscle regeneration as a result of altered macrophage function, not infiltration. Transcriptomic analysis of muscle mononuclear phagocytes reveals that Apolipoprotein E (ApoE) is up-regulated in mice with efficient regeneration. ApoE treatment enhances phagocytosis by mononuclear phagocytes in vitro, and restores phagocytic activity and muscle regeneration in Ccl2-/- mice. Because CX3CR1 deficiency may compensate for defective CCL2-dependant monocyte recruitment by modulating ApoE-dependent macrophage phagocytic activity, targeting CX3CR1 expressed by macrophages might be a powerful therapeutic approach to improve muscle regeneration.

2015-09-29 | GSE73473 | GEO

RNA-seq of of bone marrow derived mononuclear phagocytes

Project description:RNA-seq of of bone marrow derived mononuclear phagocytes

| PRJEB26391 | ENA

Gene expression profiling of peripheral blood and alveolar recruited mononuclear phagocytes in Pam3CSK4 treated mice

Project description:Aim of this project was to examine the global gene expression profiles of mononuclear phagocytes recruited from peripheral blood to the alveolar space following alveolar deposition of the TLR2-ligand Pam3CSK4 in transgenic CX3CR1+/GFP mice.

2009-01-01 | GSE11978 | GEO

Peritoneal macrophage heterogeneity is associated with different peritoneal dialysis outcomes

Project description:Transcriptome analysis of two population of peritoneal mononuclear phagocytes (CD14+ macrophages and CD1c+ dendritic cells) in peritoneal dialysis effluent from stable (infection-free) peritoneal dialysis patients.

2017-01-23 | E-MTAB-5439 | biostudies-arrayexpress

Mononuclear phagocytes in neonatal Peyer's patches

Project description:The small intestine contains lymph node-like structures termed Peyer’s patches (PP). In adult mice they contain active germinal centers reminiscent of active crosstalk with microbiota. In neonatal mice, however, homeostatic immune activation does not take place. We wanted to test whether immune maturation in neonatal mice is stalled due to a reduced presence or function of antigen presenting mononuclear phagocytes (MNP). Thus we subjected PP MNP of postnatal day (PND) 11 and adult mice to scRNAseq in steady state or after immune activation with the TLR7 agonist R848 that induces type I interferon and TNFa after oral gavage. Our results show an altered subset distribution of MNP in neonatal mice (predominance of cDC1 and cDC2b, reduced proportion of cDC2a) and a reduced potential to take up microorganisms and process/present antigen as well as decreased type I interferon mediated gene expresseion. R848 administration could partly overcome this maturation defect of neonatal MNP by increasing the proportion of CCR7+ mature cDC as well as upregulation of interferon I dependent genes.

2022-12-31 | GSE188714 | GEO

Perilipin 2-positive mononuclear phagocytes accumulate in diabetic retina and promote PPARγ-dependent vasodegeneration

Project description:Type 2 diabetes mellitus (T2DM), characterized by hyperglycemia and dyslipidemia leads to non-proliferative diabetic retinopathy (NPDR). NPDR is associated with blood-retinal barrier disruption, plasma exudates, microvascular degeneration, elevated inflammatory cytokine levels and monocyte (Mo) infiltration. Whether and how the diabetes-associated changes in plasma lipid and carbohydrate levels modify Mo differentiation. Here, we show that mononuclear phagocytes (MPs) in areas of vascular leakage in DR donor retinas express PLIN2, a marker of intracellular lipid load. Strong upregulation of PLIN2 was also observed when healthy donor Mos were treated with plasma from T2DM patients or with palmitate concentrations typical of T2DM plasma, but not under high glucose conditions. PLIN2 expression correlated with the expression of other key genes involved in lipid metabolism (ACADVL, PDK4) and the DR biomarkers ANGPTL4 and CXCL8. Mechanistically, we show that lipid-exposed MPs induce capillary degeneration in ex vivo explants, which was inhibited by pharmaceutical inhibition of PPARγ signaling. Our study provides a novel mechanism linking dyslipidemia-induced MP polarization to the increased inflammatory cytokine levels and microvascular degeneration that characterize NPDR. This study provides comprehensive insights into the glycemia-independent activation of Mos in T2DM and identifies MP PPARγ as a target to inhibit lipid-activated MPs in DR

2023-08-31 | GSE239512 | GEO

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