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Examining the role of murine norovirus (MNV)-infection on intraepithelial lymphocytes (IELs).

ABSTRACT: Examining the role of murine norovirus (MNV)-infection on intraepithelial lymphocytes (IELs).

PROVIDER: PRJNA842399 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR19403360.fastq.gz	Fastqsanger.gz
	SRR19403361.fastq.gz	Fastqsanger.gz
	SRR19403362.fastq.gz	Fastqsanger.gz
	SRR19403363.fastq.gz	Fastqsanger.gz
	SRR19403364.fastq.gz	Fastqsanger.gz

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Examining the role of murine norovirus (MNV)-infection on intraepithelial lymphocytes (IELs).

Project description:We examined how MNV-infection affects the population and function of IELs in vivo.

2022-07-01 | GSE204822 | GEO

Gene expression assessed by genome wide hybridization bead array in intraepithelial lymphocytes (IELs) isolated from small intestinal biopsies of celiac disease patients with active disease and clinical controls

Project description:Analysis of role of small intestinal intraepithelial lymphocytes (IELs) in the immunopathology of celiac disease

2017-08-24 | GSE102993 | GEO

Gene expression signatures for CD8αβ+ intraepithelial lymphocytes and CD8αβ+ splenocytes.

Project description:CD8αβ+ intraepithelial lymphocytes (IELs) are a subset of “effector-memory-like” T cells scattered along the intestinal epithelium. To investigate if CD8αβ+ IEL can function in ways other than the conventional cytotoxic effect of CD8αβ+ T cells,CD8αβ+ IELs were compared with CD8αβ+ splenocytes (SPL) by RNA-seq. We used microarrays to identify new functions of CD8αβ+ IELs .

2018-05-30 | GSE105061 | GEO

Characterization of the chemokine response of RAW264.7 cells to infection by murine norovirus

Project description:RAW264.7 macrophages infected with MNV-1 and mock infected gene expression measured by microarray. To be published in Waugh, E. Chen, A. Baird, M. Fleming, S. Brown, C.M. and V K. Ward (2014) Characterization of the chemokine response of RAW264.7 cells to infection by murine norovirus. Virus Genes Four Samples, two mock and two MNV-1 infected.

2013-12-22 | E-GEOD-50093 | biostudies-arrayexpress

Genome-wide maps of chromatin state in mouse small intestinal intraepithelial lymphocytes.

Project description:We performed CUT&Tag-Seq against histone H3K27me3 in mouse small intestinal TCRβ+CD8αα+ intraepithelial lymphocytes (IELs) of wild-type mice to analyze epigenetic modifications.

2022-08-02 | GSE185798 | GEO

Kdm6b is required for the maturation and function of intestinal TCRβ+CD8αα+ intraepithelial lymphocytes

Project description:To under the role of Kdm6b in the regulation of intestinal TCRβ+CD8αα+ intraepithelial lymphocytes (IELs), Kdm6b was conditionally deleted in mouse T cells. Small intestinal TCRβ+CD8αα+ IELs were sorted by flow cytometry and RNA-seq was conducted to identify the differentially expressed genes.

2022-08-02 | GSE154444 | GEO

Effects of the glucagon-like 1 receptor agonist exendin-4 on activated gut intraepithelial lymphocytes

Project description:Gut intraepithelial lymphocytes (IELs) are one of the few immune cell populations in the body that expresses glucagon-like 1 receptors (GLP-1R). To test the potential effects of GLP-1 on gut IEL function, we performed bulk RNA-seq on gut IELs isolated from C57BL/6J mice treated with anti-CD3 and with or without exendin-4 for 3 hours.

2022-08-29 | GSE202453 | GEO

INTERLEUKIN 15-DEPENDENT T CELL-LIKE INNATE INTRAEPITHELIAL LYMPHOCYTES DEVELOP IN THE INTESTINE AND TRANSFORM INTO LYMPHOMAS IN CELIAC DISEASE

Project description:The nature of gut intraepithelial lymphocytes lacking antigen receptors remains controversial. Herein we showed that, in humans and in mice, innate intestinal intraepithelial lymphocytes expressing intracellular CD3 (iCD3+ innate IELs) differentiate along an Id2 transcription factor (TF)-independent pathway in response to TF NOTCH1, interleukin 15 (IL-15) and Granzyme B signals. In NOTCH1-activated human hematopoietic precursors, IL-15 induced Granzyme B, which cleaved NOTCH1 into a peptide lacking transcriptional activity. As a result, NOTCH1 target genes indispensable for T cell differentiation were silenced and precursors were reprogrammed into innate cells with T cell marks including intracellular CD3 and T cell rearrangements. This pathway was operational in vivo in the mouse gut and led to the local differentiation of iCD3+ innate IELs from a bone marrow-derived precursor. In a subset of celiac patients, iCD3+ innate IELs with gain-of-function mutations in Janus kinase 1 or Signal transducer and activator of transcription 3 displayed enhanced response to IL-15 and acquired a selective advantage that favored clonal expansion and transformation into lymphoma. Overall we characterized gut T cell-like innate IELs, deciphered their pathway of differentiation, and showed their malignant transformation in celiac disease.

2016-11-23 | E-MTAB-4960 | biostudies-arrayexpress

T cell receptor is required for differentiation but not maintenance of intestinal CD4+ intraepithelial lymphocytes

Project description:The gut epithelium is populated by intraepithelial lymphocytes (IELs), a heterogeneous T cell population with cytotoxic and regulatory properties, which can be imprinted on CD4+ T cells at the epithelium. However, the role of the T cell receptor (TCR) in this process remains unclear. Single-cell transcriptomic analyses revealed distinct clonal expansions between cell states, with CD4-IELs being one of the least diverse populations. Conditional deletion of TCR on differentiating CD4+ T cells or of MHCII on intestinal epithelial cells prevented CD4-IEL differentiation. However, TCR ablation on differentiated CD4-IELs, or long-term cognate antigen withdraw, did not affect their maintenance. TCR re-engaging of antigen-specific CD4-IELs during Listeria monocytogenes infection did not alter their state but correlated with reduced bacteria invasion. Thus, local antigen recognition is an essential signal for differentiation of T cells at the epithelium but differentiated CD4-IELs are able to preserve an effector program in the absence of TCR signaling.

2020-10-02 | GSE157453 | GEO

Newly recruited intraepithelial Ly6A+CCR9+CD4+ T cells protect against enteric viral infection

Project description:The intestinal epithelium comprises the body’s largest surface exposed to viruses. Additionally, the gut epithelium hosts a large population of intraepithelial T lymphocytes, or IELs, although their role in resistance against viral infections remain elusive. By fate-mapping T cells recruited to the murine intestine, we observed accumulation of newly recruited CD4+ T cells after infection with murine norovirus CR6 and adenovirus type-2 (AdV), but not reovirus. CR6 and AdV-recruited intraepithelial CD4+ T cells co-express Ly6A and CCR9, exhibit T helper 1 and cytotoxic profiles and confer protection against AdV in vivo and in an organoid model in an IFN-g-dependent manner. Ablation of the T cell receptor (TCR) or the transcription factor ThPOK in CD4+ T cells prior to AdV infection prevented viral control, while TCR ablation during infection did not impact viral clearance. These results uncover a protective role for intraepithelial Ly6A+CCR9+CD4+ T cells against enteric adenovirus.

2022-05-26 | GSE196417 | GEO

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