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IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE129258 | GEO | 2020/04/01

REPOSITORIES: GEO

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IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [small_bulk_rnaseq]

Project description:Mononuclear phagocytes (MNPs) play a key role in maintaining intestinal homeostasis but also in triggering immunopathology in response to acute microbial stimulation, which induces the recruitment of masses of Ly6Chi monocytes to the gut. The regulators that control monocyte tissue adaptation in the gut remain poorly understood. Interferon Regulatory Factor 5 (IRF5) is a transcription factor previously shown to play a key role in maintaining the inflammatory phenotype of macrophages Here we investigate the impact of IRF5 on the MNP system and physiology of the gut at homeostasis and during inflammation. We demonstrate that IRF5 deficiency has a limited impact on colon physiology at steady state, but ameliorates immunopathology during Helicobacter hepaticus induced colitis. Inhibition of IRF5 activity in MNPs phenocopies global IRF5 deficiency. Using a combination of bone marrow chimera and single cell RNA-sequencing approaches we compare the differentiation trajectories of wild type and IRF5 deficient monocytes in a shared inflammatory environment and demonstrate that IRF5 stipulates a choice in monocyte differentiation towards macrophages. Specifically, IRF5 promotes the generation of pathogenic CD11c+ macrophages and controls the production of inflammatory mediators by these cells. Thus, we identify IRF5 as a key transcriptional controller of pathogenic monocyte differentiation in the gut.

2020-04-01 | GSE129257 | GEO

IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [single_cell_rnaseq]

2020-04-01 | GSE129256 | GEO

IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [scrnaseq_steady_state]

2020-06-11 | GSE152198 | GEO

IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype

Project description:IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype

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IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [small_bulk_rnaseq]

Project description:IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [small_bulk_rnaseq]

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IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [scrnaseq_steady_state]

Project description:IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [scrnaseq_steady_state]

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IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [single_cell_rnaseq]

Project description:IRF5 promotes intestinal inflammation by guiding monocyte differentiation towards pathogenic CD11c+ macrophage phenotype [single_cell_rnaseq]

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