Project description:In macrophage biology, resident peritoneal macrophages (RPMs) and thioglycolate-elicited peritoneal macrophages (TGPMs) have been traditionally utilized as primary cultured models. RPMs and TGPMs display distinct morphological and functional characteristics. We analyzed altered gene expression between RPMs from control mice and TGPMs from thioglycolate-injected mice.
Project description:Tissue resident macrophages are notoriously heterogeneous, exhibiting discrete phenotypes as a consequence of tissue- and micro-anatomical niche-specific functions, but the molecular basis for this is not understood. We resolved a restricted transcriptional profile for the self-renewing population of peritoneal resident macrophages, which is expressed during homeostasis and inflammation and distinct from other MM-CM-^X. Prominent within this profile was the expression of Gata6. This study represents a characterisation of the role of Gata6 in peritoneal resident macrophage phenotype. We used microarrays to determine the patterns of gene expression in peritoneal resident MM-CM-^X in the absence of GATA-6 against wild type. Conditional 'floxed' Gata6 deficient sex-matched mice between 7 weeks old were compared against wild type
Project description:microRNA transcriptome data from wild type and Gata6-deficient tissue resident peritoneal macrophages. Tissue resident macrophages are notoriously heterogeneous, exhibiting discrete phenotypes as a consequence of tissue- and micro-anatomical niche-specific functions, but the molecular basis for this is not understood. Gata6 itself has been shown to be a target of multiple miR. However, microRNA transcriptome and its dependence on tissue-specific macrophage programming, such as effected by GATA6, has not been explored. We used microRNA sequencing to determine the patterns of microRNA expression in peritoneal resident macrophages at homeostasis in the absence of GATA-6 against wild type.
Project description:Tissue resident macrophages are notoriously heterogeneous, exhibiting discrete phenotypes as a consequence of tissue- and micro-anatomical niche-specific functions, but the molecular basis for this is not understood. We resolved a restricted transcriptional profile for the self-renewing population of peritoneal resident macrophages, which is expressed during homeostasis and inflammation and distinct from other MØ. Prominent within this profile was the expression of Gata6. This study represents a characterisation of the role of Gata6 in peritoneal resident macrophage phenotype. We used microarrays to determine the patterns of gene expression in peritoneal resident MØ in the absence of GATA-6 against wild type.
Project description:RNA transcriptome data from C57BL/6 tissue resident peritoneal macrophages over expressing microRNA 708 or control. The role of microRNA-708 in shaping macrophage biology remains mostly unknown. Here, using lentiviral vectors we overexpressed microRNA-708 in vivo in C57BL/6 mice peritoneal macrophages and investigated mRNA changes in these cells after 4 days.
Project description:Resident CD102+ peritoneal and plueral macrophages were FACS-sorted from unmanipulated male and female C57BL/6 mice and compared by RNAseq.
Project description:Here we study the effect of LPS in the transcriptome of thioglycollate-elicited peritoneal macrophages isolated from Ldlr knock out mice
Project description:Activation of signaling pathways downstream of Toll-like receptor 4 upregulate expression of genes related to serine metabolism. We cultured peritoneal macrophages in control or serine/glycine-depleted medium for 24 hr, stimulated them with LPS (10 ng/ml) for 6 or 12 hr, and collected them to compare the gene expression. Microarray analysis revealed that serine/glycine-depletion in peritoneal macrophages upregulates gene expression of enzymes for serine biosynthesis.
Project description:Here we study the effect of LPS in the transcriptome of thioglycollate-elicited peritoneal macrophages isolated from Ldlr knock out and Ch25h;Ldlr double knock out mice
Project description:The interaction of macrophages with apoptotic cells is required for efficient resolution of inflammation. While apoptotic cell removal prevents inflammation due to secondary necrosis, it also alters the macrophage phenotype to hinder further inflammatory reactions. The interaction between apoptotic cells and macrophages is often studied by chemical or biological induction of apoptosis, which may introduce artifacts by affecting the macrophages as well and/or triggering unrelated signaling pathways. Here, we set up a pure cell death system in which NIH 3T3 cells expressing dimerizable Caspase-8 were co-cultured with peritoneal macrophages in a transwell system. Phenotype changes in macrophages induced by apoptotic cells were evaluated by RNA sequencing, which revealed an unexpectedly dominant impact on macrophage proliferation. This was confirmed in functional assays with primary peritoneal macrophages and IC-21 macrophages. Moreover, inhibition of apoptosis during Zymosan-induced peritonitis in mice decreased mRNA levels of cell cycle mediators in peritoneal macrophages. Proliferation of macrophages in response to apoptotic cells may be important to increase macrophage numbers to allow efficient clearance and resolution of inflammation.