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Expression data of T follicular helper cells (Tfh) from follicular lymphoma lymph nodes (FL) or non malignant tonsils (TONS)

ABSTRACT: GEP on Affymetrix U133+2.0 microarrays was performed on ex vivo cell-sorted Tfh from FL or TONS

ORGANISM(S): Homo sapiens

PROVIDER: GSE66384 | GEO | 2015/02/28

SECONDARY ACCESSION(S): PRJNA276696

REPOSITORIES: GEO

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Expression data of T follicular helper cells (Tfh) from follicular lymphoma lymph nodes (FL) or non malignant tonsils (TONS)

Project description:GEP on Affymetrix U133+2.0 microarrays was performed on ex vivo cell-sorted Tfh from FL or TONS GEP was performed on 7 Tfh from FL and 7 Tfh from TONS

2015-02-28 | E-GEOD-66384 | biostudies-arrayexpress

Expression of germinal center T follicular helper (GC-Tfh) cells and pre-Tfh cells from tonsils (Tons) and follicular lymphoma lymph nodes (FL).

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Expression data of T follicular helper (Tfh) and memory CD4 T cells from non malignant tonsils (TONS).

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Expression of germinal center T follicular helper (GC-Tfh) cells and pre-Tfh cells from tonsils (Tons) and follicular lymphoma lymph nodes (FL).

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Expression data of human B lymphocytes from follicular lymphoma lymph nodes (FL)

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Expression data of human CD19pos B lymphocytes (B) and CD19negCD22neg non-B cells (ENV) from non tumoral reactive lymph nodes (RLN), tonsils (TONS) or follicular lymphoma (FL)

Project description:GEP on Affymetrix U133+2.0 microarrays was performed on ex vivo CD19+ B lymphocytes or CD19-CD22- fractions from reactive or FL lymph nodes or normal tonsils.

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Expression data of human stromal cells isolated from Follicular lymphoma (FL) or non-malignant reactive (RLN) lymph nodes

Project description:GEP on Affymetrix U133+2.0 microarrays was performed on in vitro expanded stromal cells

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Gene expression of primary human T Follicular Helper (TFH) cells and naive CD4-positive helper T cells from tonsils of healthy volunteers

Project description:In this experiment we generated Affymetrix gene expression data for T Follicular Helper (TFH) cells from tonsils of healthy volunteers (4 biological replicates) and naive CD4-positive helper T cells (2 biological replicates). TFH cells provide a model relevant to SLE as TFH operate upstream of the activation of pathogenic autoantibody-producing B cells during the disease. This experiment accompanies promoter capture-C and ATAC-seq experiments on the same cell types.

2019-04-01 | E-MTAB-6637 | biostudies-arrayexpress

Expression Data from WT and Sh2d1a-/- in vivo follicular helper CD4 T cells (TFH) versus non follicular helper CD4 T cells (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 antigen-specific (LCMV-specific, SMARTA TCR transgenic) WT and Sh2d1a-/- follicular helper CD4 T cells (CXCR5high),versus non-follicular helper CD4 T cells (CXCR5low), eight days after viral infection.

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ATAC-seq of primary human T Follicular Helper (TFH) cells and naive CD4-positive helper T cells from tonsils of healthy volunteers

Project description:Genome Wide Association Studies (GWAS) have been successful in yielding >60 loci for Systemic Lupus Erythematosus (SLE). However, it is known that GWAS just reports genomic signals and not necessarily the precise localization of culprit genes, with eQTL efforts only able to infer causality to a minority of such loci. Thus, we sought to carry out physical and direct ‘variant to gene mapping’ by integrating results from high-throughput chromatin conformation capture and ATAC-seq assays. This experiment refers to the ATAC-seq part of our work. To determine informative proxy SNPs for each of the SLE GWAS sentinel loci, we generated ATAC-seq open chromatin maps for primary human T Follicular Helper (TFH) cells from tonsils of healthy volunteers (3 biological replicates), a model relevant to SLE as TFH operate upstream of the activation of pathogenic autoantibody-producing B cells during the disease. We also generated open chromatin maps for naive CD4-positive helper T cells (3 biological replicates).

2020-05-12 | E-MTAB-6617 | biostudies-arrayexpress

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