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Next Generation Sequencing of splenic- and CNS-infiltrating OT-1 cells in ODC-OVA mice upon LCMV-OVA and Lm-OVA infection

ABSTRACT: Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. The goal of this study is to compare the transcriptome of OT-1 cells during priming (3 days after infection) and during effector phase ( 7 days after infection) in ODC-OVA mice after LCMV-OVA and Lm-OVA infection

ORGANISM(S): Mus musculus

PROVIDER: GSE93805 | GEO | 2018/05/17

REPOSITORIES: GEO

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Next Generation Sequencing of CNS-infiltrating Tox-sufficient and -deficient OT-1 cells in ODC-OVA mice 7 days after LCMV-OVA infection

Project description:Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. The goal of this study is to compare the transcriptome of CNS-infiltrating OT-1 WT and Tox-deficient cells during effector phase (7 days after infection with LCMV-OVA)

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Project description:Following infection with LCMV, CD4+ SMARTA TCR transgenic cells (specific for the gp61-80 epitope of the LCMV glycoprotein) rapidly expand, become effector cells, and go on to form a long-lived memory population. Following infection with a recombinant Listeria monocytogenes expressing the LCMV epitope gp61-80, SMARTA cells also expand but display defective effector differentiation and fail to form memory. In an attempt to understand the signals required for CD4 T cell memory differentiation, we compared gene expression by SMARTA cells at the peak of the primary response following either Lm-gp61 or LCMV infection. Experiment Overall Design: SMARTA cells were purified at day 7 post-infection with either LCMV or Lm-gp61. SMARTA cells were sorted on the basis of Thy1.1 expression using a FACSAria. Cells were sorted through the machine twice to enhance purity. Two biological replicates of each group are provided. Each replicate represents the results of SMARTA pooled from three animals.

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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:Next Generation Sequencing of splenic- and CNS-infiltrating OT-1 cells in ODC-OVA mice upon LCMV-OVA and Lm-OVA infection

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

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Whole-genome microarray analysis of primary, secondary, tertiary and quaternary memory CD8 T cells

Project description:The transcriptome of naive OT-I T cells was compared to memory CD8 T cells after 1, 2, 3, or 4 infection with ovalbumin expressing Listeria monocytogenes (LM-OVA). Naive Thy1.1 OT-I T cells were adoptively transferred into Thy1.2 naive hosts prior to infection with LM-OVA. The resulting memory CD8 T cell population was again adoptively transferred into naive hosts and the recipient mice were again infected with LM-OVA. The adoptive transfer was repeated up to four times to generate memory CD8 T cells with up to four consecutive antigen stimulations. Three individual mice were analyzed for each group. For quaternary memory CD8 T cells, spleens from two to three mice were pooled for each sample. Naive OT-I T cells served as control samples. http://dx.doi.org/10.1016/j.immuni.2010.06.014

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