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Transcriptional profiling of human Th9 T cell clones treated with GW9662 against untreated control

ABSTRACT: Transcriptional profiling of human Th9 T cell clones treated with GW9662 against untreated control

PROVIDER: PRJEB56192 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR10228888.fastq.gz	Fastqsanger.gz
	ERR10228889.fastq.gz	Fastqsanger.gz
	ERR10228890.fastq.gz	Fastqsanger.gz
	ERR10228891.fastq.gz	Fastqsanger.gz
	ERR10228892.fastq.gz	Fastqsanger.gz

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Transcriptional profiling of human Th9 T cell clones treated with GW9662 against untreated control

Project description:To investigate the role of PPAR-γ in human TH cells, transcriptional response of activated “TH9” clones to treatment with GW9662, a potent PPAR-γ antagonist was assessed. “TH9” cell clones were incubated with GW9662 for 48h and activated with αCD3/2/28 for 12 h. Transcriptomic profiling was performed by bulk RNA-seq. To generate TH9 clones, 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. Effector memory “TH9” cells (CXCR3-CCR8+CCR6-CCR4+) were sorted to over 90% purity according to their expression of chemokine receptors from CD45RA-CD25-CD8-CD3+ cells. Single cell “TH9” 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 (1 µg/ml, Sigma-Chemicals) and irradiated allogenic feeder cells (5x104/well) in culture medium.

2022-10-31 | E-MTAB-12197 | biostudies-arrayexpress

Transcriptional profiling of human in vitro primed Th9 T cells (day 20) treated with GW9662 against untreated control

Project description:To investigate the role of PPAR-γ in human TH cells, transcriptional response in vitro primed Th9 cells to treatment with GW9662, a potent PPAR-γ antagonist was assessed. In vitro primed Th9 cells (day 20) were incubated with GW9662 for 48h. Transcriptomic profiling was performed by bulk RNA-seq. To generate in vitro primed Th9 cells, human naive T cells were isolated from PBMCs using the EasySep™ Human naive CD4+ T Cell Isolation Kit (Stemcell Technologies) as per the manufacturer’s instructions. Naive T cells were stimulated with αCD3/CD2/CD28 beads (T cell/bead = 2:1, Miltenyi) and primed into effector CD4+ Th9 cells with IL-4 (50 ng/ml) and TGF-β (5 ng/ml) (R&D Systems). From cell culture initiation to analysis, the culture medium was supplemented with the indicated cytokines every other day. Cells were harvested for RNA sequencing (RNA-seq) after 20 days.

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Transcriptional profiling of human in vitro primed Th9 T cells (day 20) treated with GW9662 against untreated control

Project description:Transcriptional profiling of human in vitro primed Th9 T cells (day 20) treated with GW9662 against untreated control

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Transcriptional profiling of Th1, Th2, Th9, and Th17 T cell clones

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:CD4+ T cells differentiate into various subsets, including T helper 1 (Th1), Th2, Th9, Th17, and regulatory T cells, which are essential in immune responses and cancer immunotherapy. However, the role of RNA N6-methyladenosine (m6A) modification in this differentiation remains unclear. Here, we demonstrate that YTHDF2, a key m6A reader protein known to destabilize m6A-modified mRNA, negatively regulates Th9 cell differentiation. Ablation of Ythdf2 in both mouse and human naïve CD4+ T cells significantly promotes Th9 differentiation by stabilizing Gata3 and Smad3 mRNA under IL-4 and TGF-β signaling. Ythdf2-deficient Th9 cells produce higher levels of IL-9 and IL-21, leading to increased tumor infiltration and cytotoxicity by CD8+ T and NK cells, thereby improving antitumor activity versus wild-type Th9 cells. Moreover, YTHDF2 depletion in CAR-Th9 cells enhances immune activation, reduces terminal differentiation, and augments antitumor efficacy. Targeting YTHDF2 thus represents a promising strategy for enhancing Th9 and CAR-Th9 cell-based cancer immunotherapies.

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The transcription factor BATF3 regulates the differentiation of TH9 cells and TH9-driven mucosal pathologies

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