Project description:Primary RNASeq data for progenitor, resident, and stimulated (C.alb, LPS, injury, APAP+ starved overnight and pIC) mononuclear phagocytes from fourteen organs.
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.
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.
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.
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.
Project description:This study aimed to identify transcription networks and signatures of bovine peripheral blood mononuclear cells in response to LPS stimulation. A total of 464 genes including at least 17 transcription factors were identified to be significantly induced by LPS using a high density bovine oligonucleotide microarray. The network analysis revealed that alternation in gene expression was regulated by transcription factors through potential interaction within the pathway networks in the LPS stimulated cells. Our results demonstrated that specific pathway networks are responsible for transcription regulation in bovine peripheral blood mononuclear cells in response to pathogen components such as LPS. One class unpaired: Bovine Peripheral Blood Mononuclear Cells from 10 BLV positive cattle are divided into 2 groups: 5 treated with PBS in vitro for 2h serve as controls. The remaining 5 samples are stimulated with LPS in vitro for 2h.
Project description:Bone marrow derived phagocytes from mouse, rat, rabbit and pig stimulated with LPS (100ng/mL) or with dsRNA (poly I:C) (1ug/mL) for 0,2,4,6 hours. Processed files include UMI matrices of QCed cells that belong to the first cluster (as described in the publication), which were used for all the analyses presented in the publication.
