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Differential gene expression in TREM1 -/- vs +/+ myeloid cells 48h after MCAo-RP

ABSTRACT: Differential gene expression in TREM1 -/- vs +/+ myeloid cells 48h after MCAo-RP

PROVIDER: PRJNA414902 | ENA |

REPOSITORIES: ENA

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Differential gene expression in TREM1 -/- vs +/+ myeloid cells 48h after MCAo-RP

Project description:Stroke is a multiphasic progress characterized by neuron damage due to hypoxia followed by secondary damage from the subsequent inflammatory immune response. Infiltrating myeloid cells induce cerebral damage through pro-inflammatory cytokines, chemokines, proteases and generation of reactive oxygen species (ROS). Triggering receptor expressed on myeloid cells 1 (TREM1) is exclusively expressed on myeloid cells and acts as an amplifier of pro-inflammatory innate immune responses. Using microarray analysis, we aim to identify the expression differences and functional change of these myeloid cells after TREM1 knockout in mice post stroke.

2019-07-02 | GSE105132 | GEO

TREM1 deficiency alters the tumor myeloid landscape

Project description:To comprehensively characterize the impact of TREM1 deficiency specifically within the tumor myeloid populations, we selectively enriched the CD45+CD11b+ tumor-infiltrating myeloid cells from tumor-bearing Trem1+/+ and Trem1-/- mice for scRNA-seq analysis.

2023-09-27 | E-MTAB-13246 | biostudies-arrayexpress

scRNA seq analysis of CD45+ tumor infiltrating cells (TICs) of B16F10 tumor-bearing Trem1+/+ and Trem1-/- mice.

Project description:To gain a global understanding of the impact of TREM1 silencing, we analyzed the CD45+ tumor infiltrating cells (TICs) of B16F10 tumor-bearing Trem1+/+ and Trem1-/- mice. Utilizing the 10x Genomics Chromium Platform, we analyzed approximately 5390 cells per sample with a coverage rate of 15493 genes per cell.

2023-09-27 | E-MTAB-13237 | biostudies-arrayexpress

mRNA microarray in MCAo rat model with IV-hUMSC

Project description:To evaluate the change of gene expression at cerebral infarction by the treatment of IV-human umblical cord derived mesenchymal stem cell. RNA was isolated from the ipsilateral hemisphere to MCAo in rats. At 72 h post-MCAo, the ipsilateral hemisphere subjected to MCAo was used for mRNA microarray. RNA was isolated from the ipsilateral hemisphere to MCAo in rats without MCAo (control group, n=5), rats treated with 1x106 IV-hUMSC (hUMSC group, n=6) and saline (saline group, n=5) at 24h post-MCAo.

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Expression data from rat (Sprague Dawley) brain subjected to MCAo.

Project description:Middle cerebral artery occlusion (MCAo) in rat represent the ischemic stroke in human. Rodents subjected to MCAo and treated with venom phospholipase A2 showed reduction in infarct volume after 24hours of stroke. We studied the global gene expression of the reduction in infarct volume using Affymetrix Gene Chips. We analysed all the genes that were up or down regulated in the study. Total RNA isolated from sham, MCAo and MCAo+nPLA rat brains, was pooled to minimize inter-individual variation and hybridized to each array of the RAE-230A or U34A GeneChipTM according to protocols described in the GeneChipTM expression analysis package (Affymetrix, CA).

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Identification of TREM1+CD163+ myeloid cells as a deleterious immune subset in HCC [scRNA-seq]

Project description:Hepatocellular carcinoma (HCC) is an inflammation-associated cancer arising from viral and non-viral etiologies. Expansion of suppressive myeloid cells is a hallmark of chronic inflammation and cancer, but their heterogeneity in HCC is not fully resolved and might underlie immunotherapy resistance in the steatohepatitis setting. Here, we present a high resolution atlas of hepatic innate immune cells from patients with HCC that unravels a steatohepatitis contexture characterized by influx of inflammatory and immunosuppressive myeloid cells. A discrete myeloid cell population identified by selective expression of TREM1 and CD163 expands in steatohepatitis-HCC. We refer to this population as TREM1+ regulatory myeloid cells (Mreg), as it potently suppresses T cell effector functions, highly expresses TGFB1 and IL13RA1 and localizes to HCC fibrotic lesions.

2024-02-04 | GSE245906 | GEO

Identification of TREM1+CD163+ myeloid cells as a deleterious immune subset in HCC [bulk_RNA-seq]

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Identification of TREM1+CD163+ myeloid cells as a deleterious immune subset in HCC [Spatial Transcriptomics]

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Project description:To characterize the transcriptional changes in PDX tumors during TREM1 inhibition by microarray

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Effect of genetic deletion of TREM1 on gene expression during aging of primary peritoneal macrophage cells

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