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Bulk ATAC-seq of IL27 treated OT-1 cells

ABSTRACT: Bulk ATAC-seq of IL27 treated OT-1 cells

PROVIDER: PRJEB82071 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR13925150_1.fastq.gz	Fastqsanger.gz
	ERR13925150_2.fastq.gz	Fastqsanger.gz
	ERR13925151_1.fastq.gz	Fastqsanger.gz
	ERR13925151_2.fastq.gz	Fastqsanger.gz
	ERR13925152_1.fastq.gz	Fastqsanger.gz

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Bulk ATAC-seq of IL27 treated OT-1 cells

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Bulk ATAC-seq of mouse Plasmodium-specific CD4+ T cells

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Bulk RNA sequence and bulk ATAC sequence of treated murine CD8+ T cells

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Project description:Bulk ATAC-seq was performed on fibroblasts from 8 different healthy mouse tissues such as bone, epididymal and inguinal fat pads, omentum, liver, lung and lymph node. This data was used to examine tissue specific chromatin landscapes in fibroblasts.

2021-05-04 | E-MTAB-10316 | biostudies-arrayexpress

ATAC-seq of naive and three effector OT-I cell subsets from mice infected with Listeria monocytogenes

Project description:Purpose: ATAC-seq analysis of naive and three effector OT-I cell subsets (from a Klrg1-Cre fate reporter mouse model) isolated from the spleen of C57BL/6 mice 0 and 8 days post infection with OVA-expressing Listeria monocytogenes. The hypothesis tested in the present study was that chromatin remodeling in KLRG1+ effector CD8 T lymphocytes promotes the differentiation into KLRG1- memory CD8 T lymphocytes that provide long-lasting immunity against infectious diseases and malignancies. Methods: DNA was obtained from 50,000 FACS-purified OT-I cell subsets isolated from spleen 0 and 8 days post infection with ovalbumin-expressing Listeria monocytogenes (LM-OVA) (experiment 3). Results: Using ATAC-seq technology, we analyzed the chromatin accessibility landscape of naive and three effector OT-I cells (KLRG1+ Reporter+, KLRG1- Reporter+ (exKLRG1) and KLRG1- Reporter-). Conclusions: Our study represents the first fate mapping analysis of KLRG1+ effector OT-I cells, demonstrates that KLRG1+ effector OT-I cells differentiate into all memory T cell lineages thereby promoting protective immunity. RNA-seq identified CX3CR1 as a marker of circulating exKLRG1 early memory OT-I cells, and ATAC-seq analysis revealed that chromatin remodeling enabled exKLRG1 memory cells to exhibit both a high cytotoxic and proliferative capacity.

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Bulk RNAseq of OT-1 T cells in OVA-pregnant and OVA-grafted mice

Project description:Purpose: The molecular circuits which govern CD8 T cell fate after alloimmunization by transplantation or pregnancy are unknown. The goals of this study are to perform whole transcriptome profiling (RNA-seq) of antigen-experienced CD8 T cells in parous and grafted mice to determine whether these cells become memory or exhausted T cells. Methods: mRNA profiles of OT-1 T cells recovered fom naive,OVA-skin grafted and OVA-parous mice were generated by bulk RNA-sequencing. OT-1 cells were FACS sorted from 10 individual mice per each of the three groups and then pooled together into three replicate samples per group. The sequence reads that passed quality filters were analyzed after aligning (STAR) with EdgeR. Results: Comparison of OT-1 T cells from OVA-grafted and OVA-parous mice revealed 400 differentially expressed genes. Conclusions: Skin grafting promotes the differentiation of canonical memory CD8 T cells whereas pregnancy promotes the differentiation of exhausted CD8 T cells with diminished recall capacity.

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Project description:Interleukin-27 (IL27) is a type-I-cytokine of the IL6/IL12 family predominantly secreted by activated macrophages and dendritic cells. Best understood are the effects of IL27 on immune cells where it has been described to have pro- or anti-inflammatory properties, either promoting TH1 responses or suppressing TH1 and TH2 responses. The action on other cell types is less well studied. In the liver, IL27 expression was observed to be upregulated in patients with hepatitis B, and sera of hepatocellular carcinoma (HCC) patients contain significantly elevated levels of IL27 compared to healthy controls or patients with hepatitis and/or liver cirrhosis. We previously reported interferon-gamma-like antiviral activity of IL27 in hepatic cells. Here we further studied the effects of IL27 on HCC cells in comparison to other cytokines. We were especially interested in the relevance of the IL27-induced STAT3 activation. Thus we compared its response with those induced by IFNg (STAT1-dominated response) or IL6-type cytokines (IL6, Hyper-IL6 or OSM) (STAT3-dominated response). We find that in hepatocytes, IL27 induces an IFNg-like, STAT1-dependent transcriptional response, but we do not find an effective STAT3-dependent response. The availability of STAT1 seems critical in the shaping of the IL27 response, as the siRNA knock-down of STAT1 revealed its ability to induce the acute-phase protein gamma-fibrinogen, a typical IL6 family characteristic. Moreover, we describe a crosstalk between the signaling of IL6-type cytokines and IL27: responses to the gp130-engaging cytokine IL27 (but not those to IFNs) can be inhibited by IL6-type cytokine pre-stimulation, likely by a SOCS3-mediated mechanism. This experiment represents microarray analysis of three hepatocellular carcinoma cell lines treated with IL-27, IFNg, hyper-IL6 or OSM in combination with shRNA knockdown of STAT3.

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