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Upregulation of TFH profile in absence of Ets1 expression

ABSTRACT: Upregulation of TFH profile in absence of Ets1 expression

PROVIDER: PRJNA434077 | ENA |

REPOSITORIES: ENA

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Upregulation of TFH profile in absence of Ets1 expression

Project description:To characterize the effect of loss of Ets1 in Non-TFH and TFH cells, we performed gene expression RNAseq analysis for T follicular helper (TFH) and Non-T follicular helper (Non-TFH) cells in WT (Ets1 fl/fl) and Ets1 KO (CD4-cre Ets1 fl/fl) mice.

2019-03-03 | GSE110595 | GEO

Ets1 modulates epigentic landscape of key TFH genes in T naïve cells

Project description:Ets1 can directly bind key TFH genes, regulating their expression . Loss of Ets1 results in the pre-mature expression of TFH-genes in Non-TFH cells. We wished to analyze if loss of Ets1 correlated with changes in chromatin accessibility especially in TFH gene loci.

2019-03-03 | GSE110594 | GEO

Ets1 suppresses the expression of key TFH genes to block TFH differentiation

Project description:Ets1 suppresses the expression of key TFH genes to block TFH differentiation

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Gene profile of Wt and miR-155-/- Tfh cells

Project description:Differential gene expression profile of Tfh and non-Tfh cells from both Wt and miR-155-/- mice spleens. Wt and miR-155-/- mice were immunized with OVA. 8 days post immunization, CD4+CXCR+PD1+ Tfh cells and CD4+CXCR5-PD1- non Tfh cells were sorted from mice spleens for analyses.

2014-12-09 | E-GEOD-58371 | biostudies-arrayexpress

Gene expression analysis of Ets1-/- CD4+ CD8+ thymocytes

Project description:We performed microarray analysis of gene expression in WT and Ets1-/- CD4+ CD8+ DP thymocytes. Overall, we find that Ets1-/- thymocytes display gene expression signatures closer to previous stages of thymocyte development (e.g. DN3-4) than WT DP cells, suggesting that while these cells do become DP thymocytes in the absence of Ets1, that the latter is required for the upregulation of later T-cell genes and that its presence is required for the downregulation of genes corresponding to earlier and alternative stages of development.

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Expression Data from in vivo Tfh vs GC Tfh vs non-Tfh

Project description:CD4 T cell help is critical for both the generation and maintenance of germinal centers, and T follicular helper (TFH) cells are the CD4 T cell subset required for this process. SAP (SH2D1A) expression in CD4 T cells is essential for germinal center development. However, SAP-deficient mice have only a moderate defect in TFH differentiation as defined by common TFH surface markers. CXCR5+ TFH cells are found within the germinal center as well as along the boundary regions of T/B cell zones. Here we show that germinal center associated T cells (GC TFH) can be identified by their co-expression of CXCR5 and the GL7 epitope, allowing for phenotypic and functional analysis of TFH and GC TFH populations. Here we show GC TFH are a functionally discrete subset of further polarized TFH cells, with enhanced B cell help capacity and a specialized ability to produce IL-4 in a TH2-independent manner. Strikingly, SAP-deficient mice have an absence of the GC TFH subset and SAP- TFH are defective in IL-4 and IL-21 production. We further demonstrate that SLAM (Slamf1, CD150), a surface receptor that utilizes SAP signaling, is specifically required for IL-4 production by GC TFH. GC TFH cells require IL-4 and IL-21 production for optimal help to B cells. These data illustrate complexities of SAP-dependent SLAM family receptor signaling, revealing a prominent role for SLAM receptor ligation in IL-4 production by germinal center CD4 T cells but not in TFH and GC TFH differentiation. Analysis of in vivo polyclonal GC Tfh vs Tfh vs Non-Tfh eight days after LCMV viral infection. Analysis of in vivo follicular helper CD4 T cells (CXCR5high GL7low), versus germinal center follicular helper CD4 T cells (CXCR5hi GL7hi), versus non-follicular helper CD4 T cells (CXCR5low) eight days after viral infection.

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Ets1 modulates epigentic landscape of key TFH genes in T naïve cells

Project description:Ets1 modulates epigentic landscape of key TFH genes in T naïve cells

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Transcriptomic profile of Tfh cells during intestinal helminth infection

Project description:The goal of this study was to define the regulation of Tfh cell response during intestinal helminth infection. Using the helminth Trichuris muris, we performed RNA-seq analysis on Tfh cells that develop during acute vs chronic helminth infection. We found that the transcriptomic profile of acute vs chronic induced Tfh cells are distinct and they express Th2/Th1-associated genes, respectively.

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Chromatin accessibility profile of Tfh cells during intestinal helminth infection

Project description:The goal of this study was to define the regulation of Tfh cell response during intestinal helminth infection. Using the helminth Trichuris muris, we performed ATAC-seq analysis on Tfh cells that develop during acute vs chronic helminth infection. We found that the epigenetic profile of acute vs chronic induced Tfh cells are distinct by adopting Th2 and Th1 cell phenotypes, respectively. For example, Th2-associated genes such as the Il4 locus was more accessible in acute-induced Tfh cells (and vice versa for Th1-associated genes in chronic-induced Tfh cells).

2021-10-20 | GSE186062 | GEO

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