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Tissue printing: splenic red pulp macrophages of once-malaria infected mice are transcriptionally identical to prenatally seeded red pulp macrophages from uninfected mice.

ABSTRACT: Tissue printing: splenic red pulp macrophages of once-malaria infected mice are transcriptionally identical to prenatally seeded red pulp macrophages from uninfected mice.

PROVIDER: PRJNA630449 | ENA |

REPOSITORIES: ENA

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Tissue printing: splenic red pulp macrophages of once-malaria infected mice are transcriptionally identical to prenatally seeded red pulp macrophages from uninfected mice.

Project description:Acute malaria infection with P. chabaudi obliterates embryonically seeded tissue-resident red pulp macrophages in the spleen of C57Bl/6J mice - regardless of whether the infection is mild (mosquito transmitted P. chabaudi AS - no hyperparasitaemia, no measurable clinical manifestations of disease other than low-grade anaemia) or severe (mosquito transmitted P. chabaudi AJ - acute hyperparasitaemia, severe anaemia, hypothermia and prostration). Red pulp macrophages return 100 days later, once mice cleared parasitaemia. We then flow sorted 10,000 red pulp macrophages (lineage-, autofluorescent, F4/80+, B220-, CD11bint, CD11cint) directly into Trizol, extracted total RNA and analysed their transciptome using the affymetrix mouse exon 1.0 ST array. Red pulp macrophages from mice once infected with mild AS or severe AJ P. chabaudi parasites were compared to uninfected age-matched mice. We uncover that red pulp macrophages isolated from the spleens of once-malaria infected mice are transcriptionally identical to prenatally seeded red pulp macrophages from uninfected mice. The spleen tissue niche thus imprints an identical functional profile onto these cells - regardless of their origin.

2020-11-26 | GSE149894 | GEO

Transcript profiling in splenic red pulp macrophages from SIRPa-KO mice and WT mice

Project description:To compare the splenic macrophages between SIRPα-knockout mice and WT mice, we performed a complete transcript profiling of the splenic red pulp macrophages from SIRPα-KO mice compared to WT mice using mRNA microarray as a discovery platform. SIRPα-KO mice and WT mice were kept under the same condition. Macrophages were isolated from spleen red pulp of SIRPα-KO mice and WT mice. RNA was then isolated from the same number of freshly isolated macrophages.

2016-11-22 | GSE78191 | GEO

PPARγ is essential for the development of erythroblastic island macrophages and red pulp macrophages

Project description:Macrophages in the bone marrow erythroblastic island (EIM) and splenic red pulp (RPM) are required for terminal erythropoiesis and removal of aged erythrocytes, respectively. This manuscript shows that EIM and RPM development require both PPARg and Spi-C.

2021-02-04 | GSE166085 | GEO

The role of IL-33 on red pulp macrophage (RPM) development

Project description:This study investigated the effects of IL1RL1 deficiency on the devlopment of red pulp macrophages (RPM)

2020-03-11 | GSE146782 | GEO

Investigation of Bach2 function by heme-iron homeostasis in red-pulp macrophage.

Project description:Macrophages are central in regulating iron homeostasis. Transcription repressor Bach2 regulates by heme. Here we investigated the relationship between heme-regulated Bach2 and macrophage in spleen. We found that gene expression were not many change between WT and Bach2 knock out mice in red-pulp macrophage.Our results suggest that the function of the red-pulp macrophage is not dependent on according to expression of Bach2.

2019-03-31 | GSE79806 | GEO

Differential gene expression of TLR7 overexpressing inflammatory hemophagocytes, Ly6Chi Monocytes, and Red Pulp Macrophages

Project description:We have defined a novel population of monocyte-derived hemophagocytes (inflammatory hemophagocytes (iHPC)) found in situations of inflammation, such as TLR7.1 mice that overexpress TLR7. These iHPC are similar yet distinct from red pulp macrophages (RPM) and differentiate in response to chronic TLR7 signals. In vivo, iHPC phagocytose red blood cells and platelets causing anemia and thrombocytopenia. We performed this study to further understand iHPC and their relationship to RPM and monocytes and determine what gene signatures make them unique.

2019-01-15 | GSE117711 | GEO

Aging-triggered iron-rich insoluble protein aggregates in the spleen originate chiefly from red pulp macrophages.

Project description:Both iron homeostasis and erythropoiesis are known to be affected by aging. Iron needs in mammals are met primarily by iron recycling from senescent red blood cells (RBCs), a task chiefly accomplished by red pulp macrophages (RPMs) in the spleen. Given that RPMs continuously process iron, their cellular functions might be susceptible to age-dependent decline, a possibility that has been unexplored to date. In our project, we identified a formation of undegradable iron- and heme-rich extracellular aggregates in the spleens of 10-11-month-old female mice. To better understand the origin of these aggregates, here, we performed: i) protein identification and intrasample quantification (iBAQ) of proteins of magnetically-isolated red pulp macrophages from spleens of two female 8-weeks-old C57BL/6J (maintained on a standard diet) and ii) label-free quantification of proteins of the splenic protein aggregates formed in the mouse spleen 24 hours after intraperitoneal iron dextran injection, using dextran-injected mice as a control. Two 8-week-old C57BL/6J mice per group were analyzed. This dataset is related to the project PXD032900, which describes quanytitative analysis of proteins in aggregates magnetically isolated from spleen of aged (standard or iron-reduced diet) and young mice (standard diet).

2023-02-02 | PXD038660 | Pride

Expression data from mouse spleen pre-Red Pulp Macrophages (PreRPM)

Project description:Expression data from mouse spleen pre-Red Pulp Macrophages (PreRPM)

| PRJNA632615 | ENA

bulk mRNA sequencing of splenic Red Pulp Fibroblasts (RPF) and lymph node Fibroblastic Reticular Cells (FRC)

Project description:bulk mRNA sequencing was used to compare the fibroblastic nature of RPF and FRC transcriptomes, and the transcriptionnal response induced in RPF by Red Pulp Macrophages depletion

2020-06-19 | GSE148356 | GEO

Clinical and molecular characterization of splenic diffuse red pulp lymphomas [Agilent]

Project description:Deep characterization of a large series of splenic diffuse red pulp lymphomas

2017-12-23 | GSE65060 | GEO