Murine Th2, Th9, and iTreg transcriptome
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE139297 | GEO | 2019/10/24
REPOSITORIES: GEO
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Project description:Murine Th2, Th9, and iTreg transcriptome
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Project description:To test whether human in vitro primed Th9 cells recapitulate the core pathogenic Th2 cell phenotype, we differentiated naïve T cells into Th1 (IL-12), Th2 (IL-4), Th9 (IL-4+TGF-β), and iTreg (TGF-β). After 7 days transcriptomic profiling by bulk RNA-seq was performed.
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Project description:We next sought to identify the transcriptional program that differentiates IL-9+Th2 cells from “conventional” Th2 cells. To this end, we selected representative Th1, Th17, Th2, and IL-9+Th2 clones (Figure 5A) and determined their transcriptome in the resting state and at different time points after activation using RNAseq. Peripheral Blood Mononuclear Cells (PBMC) were isolated by Ficoll-Plaque Plus (GE Healthcare, UK) density gradient centrifugation. Human CD4+ T cells were isolated from PBMC by EasySep positive selection kit (Stemcell Technologies) according to manufacturer’s instruction. Positively selected CD4+ T cells were washed with PBS and stained for subsequent Th cell subset sorting. Memory Th cell subsets were sorted to over 90% purity according to their expression of chemokine receptors from CD45RA-CD25-CD8-CD3+ cells: Th1(CXCR3+CCR8-CCR6-CCR4-), Th2 (CXCR3-CCR8-CCR6-CCR4+), Th17 (CXCR3-CCR8-CCR6+CCR4+), Th9 (CXCR3-CCR8+CCR6-CCR4+). Single cell Th subset clones were directly sorted into 96well plate according to their expression of chemokine receptors (see above). Single cell clones were expanded and maintained by periodic restimulation with PHA (phytohaemaglutinine, 1 µg/ml, Sigma-Chemicals) and irradiated allogenic feeder cells (5x104/well) in culture medium. T cells were polyclonally activated using beads coated with antibodies against CD3, CD2, and CD28 (T cell/bead = 2:1, human T cell activation/expansion Kit, Miltenyi). Cell cultures were sampled before activation (time 0h) and 2, 4, 6, 9, 12, 24, and 48 hours after activation.
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Project description:Analysis of the effect of vitamin C on gene expression regulation in iTreg cells. Results provide important information of the response of iTreg cells to vitamin C. Total RNA obtained from iTreg cells cultured for 5 days with or without vitamin C compared to natural Treg and naïve CD4+ T cells
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Project description:Microarray analyses were performed to compare gene expression in cultured mouse Th9, Th2 and Treg cells and resting versus activated Th9 cells.
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Project description:Functionally distinct CD4+ helper T (Th) cell subsets, such as Th1, Th2, Th17, and regulatory T cells (Treg), play a pivotal role in the host-defense against pathogen invasion and the pathogenesis of inflammatory disorders. In this project, DIA-MS-based proteome analysis was performed on naïve CD4+ T, Th0, Th1, Th2, Th17 and iTreg cells using Q Exactive HF-X (Thermo Fisher Scientific) to search for proteins that differ among the cell subsets.
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Project description:Although the master transcription factors (TFs) are the key to the development of specific T cell subsets, whether additional transcriptional regulators are induced by the same stimuli that dominantly repress development of other T cell lineages has not been fully elucidated. Using Transforming growth factor-b (TGF-b) induced regulatory T cell (iTreg) system, we identify the TF Musculin (MSC) as critical for iTreg development by repression of TH2 transcriptional program. Loss of MSC reduces Foxp3 expression and induces TH2 differentiation even under TGF-b induced iTreg differentiation conditions. MSC mediates this effect by interrupting binding of GATA3 to TH2 locus and reducing intrachromosomal interactions within the Th2 locus. MSC-deficient iTregs are not able to suppress TH2 responses and the Msc–/– mice spontaneously develop gut and lung inflammation with age. Our data indicate that MSC enforces Foxp3 expression and promotes unidirectional induction of iTregs by repressing development of the TH2 developmental program.
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