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Gene expression in inflammatory macrophages, tissue resident macrophages and neutrophils

ABSTRACT: Genes expression in Ly6C+/F4/80+ inflammatory macrophages, CX3CR1+/F4/80+ tissue resident macrophages and Ly6G+/F4/80- neutrophils which were isolated from day 3 wounds in C57/B6 mice aged 8 weeks by cell sorting

ORGANISM(S): Mus musculus

PROVIDER: GSE74783 | GEO | 2016/07/01

SECONDARY ACCESSION(S): PRJNA301472

REPOSITORIES: GEO

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Gene expression in inflammatory macrophages, tissue resident macrophages and neutrophils

Project description:Genes expression in Ly6C+/F4/80+ inflammatory macrophages, CX3CR1+/F4/80+ tissue resident macrophages and Ly6G+/F4/80- neutrophils which were isolated from day 3 wounds in C57/B6 mice aged 8 weeks by cell sorting Ly6C+ macrophages expressed higher (over 5 folds) levels of 241 genes compared to CX3CR1+ macrophages, and 3382 genes compared to neutrophils

2016-07-01 | E-GEOD-74783 | biostudies-arrayexpress

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RNA-sequencing on sorted tumor-associated macrophages from vehicle or JHU083 pro-drug of 6-Diazo-5-oxo-L-norleucine (glutamine antagonist) treated 4T1 (breast cancer) tumor bearing mice

Project description:RNA-sequencing was performed on sorted tumor-associated macrophages (CD45+7AAD-CD11b+F4/80+CD8-Ly6C-Ly6G-) from 4T1 tumor (murine breast cancer) bearig mice with or without JHU083, pro-drug of 6-Diazo-5-oxo-L-norleucine (glutamine antagonist) treatment for expression profiling

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High throughput quantitative whole transcriptome analysis of individual macrophages 7 days post-pneumonectomy in a B6 CSF1R-GFP mouse

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2017-06-19 | GSE96104 | GEO

Elucidating granulocytic myeloid-derived suppressor cell (G-MDSC) fate during S. aureus biofilm infection

Project description:Myeloid-derived suppressor cells (MDSCs) are pathologically activated immature myeloid cells with immunosuppressive activity that expand during chronic inflammation, such as cancer and prosthetic joint infection (PJI). MDSCs can be broadly separated into two populations based on surface marker expression and function, namely monocytic MDSCs (M-MDSCs) and granulocytic MDSCs (G-MDSCs). In cancer models, M-MDSCs have been reported to transition into tumor-associated macrophages and/or dendritic cells, whereas G-MDSCs are considered terminally differentiated with short half-lives. G-MDSCs are the most abundant leukocyte infiltrate during PJI; however, how this population is maintained in vivo and cellular heterogeneity is currently unknown. In this study, we identified a population of Ly6G+Ly6C+F4/80+MHCII+ MDSCs during PJI that displayed immunosuppressive properties ex vivo. We leveraged F4/80 and MHCII expression by these cells for further characterization using cellular indexing of transcriptomes and epitopes by sequencing (CITE-seq), which revealed a distinct transcriptomic signature of this population. F4/80+MHCII+ MDSCs displayed gene signatures resembling G-MDSCs, neutrophils, and monocytes, but had increased expression of genes involved in cytokine response/production, inflammatory cell death, and mononuclear cell differentiation. To determine whether F4/80+MHCII+ MDSCs represented an alternative differentiation state of G-MDSCs, Ly6G+Ly6C+F4/80-MHCII- G-MDSCs from CD45.1 mice were adoptively transferred into CD45.2 recipients using a mouse model of PJI. A small percentage of transferred G-MDSCs acquired F4/80 and MHCII expression in vivo, suggesting some degree of plasticity in this population. Collectively, these results demonstrate a previously unappreciated phenotype of G-MDSCs during PJI, which suggests a novel granulocytic-to-monocytic transition of MDSC infiltrates.

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Project description:Using fluorescence activated cell sorting, we isolated CD45+, CSF1R-GFP+, F4/80+, Ly6G- mouse lung monocytes and macrophages at 7 days after sham thoracotomy procedures. We then used microfluidic single cell RNA-sequencing to transcriptional profile unique myeloid subsets.

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Project description:Mice brain at different age were digested and cell suspension were prepared. Cells were stained using anti-CD45, F4/80, CD11b and Ly6C and sorted using an cell sorter BD ARIA. Macrophages were then prepared in order to perform single cell RNA-Seq

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Heme regulates the development of iron-recycling macrophages from monocytes (sorted splenocytes)

Project description:Splenic red pulp macrophages (RPM) degrade senescent erythrocytes and recycle heme-associated iron. The transcription factor Spic is selectively expressed by RPM and is required for their development, but the physiologic stimulus inducing Spic is unknown. Here, we report that Spic also regulated the development of F4/80+VCAM+ bone marrow macrophages (BMM) and that Spic expression in BMM and RPM development was induced by heme, a metabolite of erythrocyte degradation. Pathologic hemolysis induced loss of RPM and BMM due to excess heme but induced Spic in monocytes to generate new RPM and BMM. Spic expression in monocytes was constitutively inhibited by the transcriptional repressor Bach1. Heme induced proteasome-dependent BACH1 degradation and rapid Spic derepression. Further, cysteine-proline dipeptide motifs in BACH1 that mediate heme-dependent degradation were necessary for Spic induction by heme. These findings are the first example of metabolite-driven differentiation of a tissue-resident macrophage subset and provide new insight into iron homeostasis. Global gene expression pattern of Spic+ monocytes, Spic- monocytes, and Spic high red pulp macrophages were compared by sorting these cells from Spic(igfp/+) splenocytes and performing microarray-based gene expression profiling. Splenocytes were prepared from Spic(igfp/+) mice and were first negatively selected for CD4, CD8, and B220 by MACS (Miltenyi Biotech) purification using the respective microbeads. Negatively selected splenocytes were then stained with anti-CD11b and anti-Ly6c and sorted for Spic+ monocytes (CD11b+Ly6c+Spic+) and Spic- monocytes (CD11b+Ly6c+Spic-). Purified RPM were obtained by staining splenocytes with anti-F4/80 and sorting for F4/80 hi Spic-EGFP hi cells.

2014-03-14 | E-GEOD-46984 | biostudies-arrayexpress

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