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TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium

ABSTRACT: TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium

PROVIDER: PRJNA990716 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25116200_1.fastq.gz	Fastqsanger.gz
	SRR25116200_2.fastq.gz	Fastqsanger.gz
	SRR25116046_1.fastq.gz	Fastqsanger.gz
	SRR25116046_2.fastq.gz	Fastqsanger.gz
	SRR25116047_1.fastq.gz	Fastqsanger.gz

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TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium [ATAC-seq]

Project description:The ocular surface is colonized by commensal microbiota, which tune the local mucosal immune response. However, the mechanisms underlying the induction of an IL-17 response by γδ T cells in response to ocular commensal bacteria, particularly Corynebacterium mastitidis (C. mast), have not been fully investigated. Here, we demonstrated that intrinsic TLR2 activation in γδ T cells by commensal microbiota is required for their IL-17A production and fatty acid oxidation. We also identified IκBζ, a transcription factor whose expression is upregulated by TLR2 signaling, as a key regulator to enhance the expression of genes responsible for IL-17A production and FAO program. This study highlights the role of TLR2-mediated transcriptional regulation in targeting effector cytokines and metabolic programs to support IL-17A responses to commensal bacteria.

2024-05-15 | GSE236383 | GEO

TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium [RNA-seq]

2024-05-15 | GSE236386 | GEO

TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium [ATAC-seq]

Project description:TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium [ATAC-seq]

| PRJNA990734 | ENA

TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium [RNA-seq]

Project description:TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium [RNA-seq]

| PRJNA990735 | ENA

TLR2 in γδ T cells is required for metabolic support of IL-17A ocular mucosal immune response to a commensal bacterium

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-05-15 | GSE236387 | GEO

Reduced TCRγδ signal strength engages phosphatidylinositol 3-kinase (PI3K) to drive thymic development of IL-17A-secreting γδ T cells

Project description:Reduced TCRγδ signal strength manifest by constrained Syk activity engages PI3K to maintain expression of key master regulators of the IL-17 program; RORγt and c-Maf, and drive thymic development of IL-17A-secreting γδ T cells (γδ17 cells). Notably, inhibition of PI3K not only abrogates γδ17 cell development, but also permits γδ progenitors to adopt a type-I interferon gene expression signature that identifies a novel CD8(+)Sca-1(+) γδ T cell subset.

2021-07-05 | GSE167943 | GEO

Vγ6+ γδ T cells play a critical role in protection against infection by Escherichia coli

Project description:γδ T cells producing interleukin 17A (IL-17A), which are mainly Vγ4 and Vγ6 subsets, are involved in protection against infection by extracellular bacteria. Using a new Vγ6-specific monoclonal antibody (mAb) (1C10-1F7) which we recently developed, we found that IL-17A+ Vγ6+ γδ T cells increased predominantly in the peritoneal cavity compared with IL-17A+ Vγ4+ γδ T cells during intraperitoneal Escherichia coli infection. The number of IL-17A+ Vγ6+ γδ T cells, which rapidly became CD69+ from CD69-, peaked at 12 h after infection. In vivo treatment with 1C10-1F7 mAb significantly inhibited the accumulation of neutrophils and hampered the resolution of E. coli infection. These results suggest that rapid activation of IL-17A+ Vγ6+ γδ T cells contributed to host defence against E. coli infection.

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Double-negative T cells ameliorate psoriasis by selectively inhibition on IL-17A producing γδ T cells

Project description:Psoriasis is a chronic immune-mediated skin condition influenced by genetics and environmental factors. γδ T cells, as the main sources of IL-17A, play pivotal roles in the inflammatory processes of psoriasis. During psoriasis pathogenesis, inhibiting the secretion of IL-17A has emerged as a novel therapeutic approach for treating psoriasis. Double-negative T (DNT) cells is a novel type of immunosuppressive cells. Our preliminary research has unveiled that DNT cells play a significant immunoregulatory role in autoimmune and allergic diseases. In this study, we aimed to evaluate the protection of DNT cells and explore its underlying mechanism.

2024-04-10 | GSE248626 | GEO

MHC class II inhibits the generation of IL-17A+ Vγ6 γδ T cells in the thymus at perinatal stage

Project description:TCR γ chain loci of mice have seven variable (Vγ) gene segments (Vγ1, Vγ2, Vγ3, Vγ4, Vγ5, Vγ6, and Vγ7) using the Heilig and Tonegawa nomenclature. Vγ6+ γδ T cells, which develop in the thymus at the perinatal stage, are distributed within the mucosal tissues in the periphery. Vγ6+ γδ T cells are exclusive interleukin (IL)-17 producers among γδ T cells, and Vγ6+ IL-17A+ γδ T (γδT17) cells play important roles in protection against microbial infection and in the pathogenesis of inflammatory diseases, such as colitis and autoimmune diseases. We have previously reported that γδT17 cells develop from the CD4–CD8– (DN)2b stage in the thymus at the prenatal stage in a Bcl11b-dependent manner. However, details of the development of Vγ6+ γδT17 cells remain obscure. To analyze Vγ6+ γδ T cells in detail, we recently developed a monoclonal antibody (mAb; termed 1C10-1F7) specific to mouse Vg6 chain. Use of this mAb revealed that Vγ6+ γδ T cells in 0-day-old thymus were co-localized with medullary thymic epithelial cells (mTECs), which regulate T cell tolerance by self-antigen presentation using major histocompatibility complex (MHC) class II. Here, we report that MHC class II in the thymus inhibits the generation of Vγ6+ γδT17 cells.

2022-08-01 | GSE180320 | GEO

D-mannose suppressed γδ T cells and alleviated murine psoriasis.

Project description:Psoriasis is a chronic skin suffering with multiple comorbidities such as psoriatic arthritis and cardiovascular diseases. Increasing evidences have shown the γδ T cells as the sources of IL-17A play critical roles in the psoriatic syndrome. However, there is still lack an effective way to manipulate these pathogenic γδ T cells which were less studied relative to ab T cells. The present study aims to characterize the phenotype of γδ T cells and evaluate the impact of D-mannose (a C-2 epimer of glucose) on γδ T-mediated psoriasis. We found the psoriatic γδ T cells underwent robust proliferation and acquired an IL-17 producing phenotype. The transcriptomic profiles of these skin draining LN γδ T cells had elevated glycolytic features. Importantly, Treatment of D-mannose inhibited γδ T cells and successfully alleviated the local and systematic inflammations induced by imiquimod. The decreased AKT/mTOR/HIF-1a signaling and glycolytic ability may contribute to the suppression of γδ T cells achieved by mannose. Our study deepened the understandings of γδ T cells in psoriasis, meanwhile, promoted D-mannose utilization as a potent clinical application for γδ T cells driven autoimmune diseases.

2022-03-30 | GSE188905 | GEO

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