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Glycosyltransferase Extl1 promotes CCR7-mediated dendritic cell migration to restrain infection and autoimmunity [treated vs. untreated]

ABSTRACT: Purpose: mRNAs sequencing of the gene expression differences in CCR7-stimulated mDC. The goals of this study are to investigate the biological effect of glycosyltransferase Extl1 in regulating dendritic cell function.

ORGANISM(S): Mus musculus

PROVIDER: GSE184858 | GEO | 2023/01/19

REPOSITORIES: GEO

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Glycosyltransferase Extl1 promotes CCR7-mediated dendritic cell migration to restrain infection and autoimmunity

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Glycosyltransferase Extl1 promotes CCR7-mediated dendritic cell migration to restrain infection and autoimmunity

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TCR repertoire of effector CCR7-CD38+ cells accumulating during experimental infection with Typhoidal Salmonella

Project description:In order to characterize pathogen specific T cell responses against Salmonella volunteers challenged with Salmonella enterica serovar Typhi (S. Typhi) or Salmonella Paratyphi A (S. Paratyphi). we used mass cytometry, to identify effector CD4+ T cells circulating during infection. We identified a population of CCR7-CD38+ cells accumulating during infection, and via unbiased single cell cloning and expansion we demonstrated that these CCR7-CD38+ cells are enriched in Salmonella specific T cells. In this experiment we performed TCR repertoire analysis of CCR7-CD38+ and CCR7-CD38- cells to determine the clonality of CCR7-CD38+ cells, the overlap between the repertoire of CCR7-CD38+ cells and of non-activated effector CCR7-CD38- cells, and to identify within CCR7-CD38+ and CCR7-CD38- cells the presence of the CDR3b TCR sequence of the pathogen specific T cell clones isolated from CCR7-CD38+ cells

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Transcription profile of B cells isolated from peripheral lymph nodes of wild-type vs CCR7-/- mice

Project description:We investigated the transcriptional profile of B cells isolated from peripheral lymph nodes of CCR7-/-C57BL/6 and C57BL/6 mice respectively. B cells were sorted as follows: CD19+, CD3-, CD11c-, CD11b-, NK1.1-, GR-1-. Very few genes were differentially regulated in CCR7-/- B cells, however the expression of a number of genes associated with B-cell activation was increased in CCR7-/- B cells compared to WT B cells. Our data suggest a role of CCR7 signaling in B-cell activation processes. 12 purified RNA samples (6 samples of each genotype), originated from 12 individually facs-sorted cell samples, were used for the microarray study. 3 RNA samples per genotype were pooled, giving rise to 2 wildtype- and 2 Ccr7 knock-out pools. In each of the 2 dual-color microarray hybridizations, samples from 1 wildtype and 1 Ccr7 knock-out pool were cohybridized. Microarray hybridizations 1 and 2 were performed in a dye-swap approach.

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