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RNA sequencing of flow-sorted lung parenchymal CD226+ and CD226- CD8 T cells from mice chronically infected with Mycobacterium tuberculosis

ABSTRACT: RNA sequencing of flow-sorted lung parenchymal CD226+ and CD226- CD8 T cells from mice chronically infected with Mycobacterium tuberculosis

PROVIDER: PRJNA1292216 | ENA |

REPOSITORIES: ENA

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RNA sequencing of flow-sorted lung parenchymal CD226+ and CD226- CD8 T cells from mice chronically infected with Mycobacterium tuberculosis

Project description:Lung CD8⁺ T cells induced during chronic tuberculosis exhibit functional heterogeneity, comprising both effector and exhausted states. CD226 is the most differentially expressed gene distinguishing effector from exhausted CD8⁺ T cells. Functionally, CD226 serves as a costimulatory molecule that promotes recognition of Mtb-infected macrophages. Loss of CD226 expression correlates with the onset of CD8⁺ T cell exhaustion during tuberculosis.

2025-07-22 | GSE302813 | GEO

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Transcriptomic analysis of freshly purified human CD226- and CD226+ CD8+ T cell subsets isolated from the peripheral blood of healthy donors.

Project description:We recently found that loss of the activating receptor CD226 (DNAM-1) was a critical mechanism affecting CD8+ T cell responsiveness to TCR stimulation. To better understand the molecular differences between CD226- and CD226+ CD8+ T cells, we decided to perform a global transcriptional analysis of purified naive (Tn, CD62L+CD45RA+), central memory (Tcm, CD62L+CD45RA-) and terminal effector memory (Temra, CD62L-CD45RA+) CD226+ and CD226- CD8+ T cells using next generation RNA sequencing.

2020-10-30 | GSE135291 | GEO

Transcriptomic analysis of resting or activated human CD226- and CD226+ effector memory CD8+ T cell subsets isolated from the peripheral blood of healthy donors.

Project description:We recently found that loss of the activating receptor CD226 (DNAM-1) was a critical mechanism affecting CD8+ T cell responsiveness to TCR stimulation. To better understand the molecular differences between CD226- and CD226+ CD8+ T cells, we decided to perform a global transcriptional analysis of purified CD226+ and CD226- CD8+ effector memory T cells before and after TCR activation using next generation RNA sequencing. We report here the total RNA sequencing of healthy donor resting CD226- and CD226+ CD8+ Tem cells (n=6/group) or activated (ACT, n=4/group) by α-CD2/CD3/CD28 for 24 hrs.

2020-10-30 | GSE133397 | GEO

Blocking CD226 regulates ILC2 effector function and alleviates airway hyperreactivity

Project description:Type 2 innate lymphoid cells (ILC2s) play a pivotal role in type 2 asthma. CD226 is a costimulatory molecule involved in various inflammatory diseases. Here, we aimed to investigate CD226 expression and function within human and mouse ILC2s, and to assess the impact of targeting CD226 on ILC2-mediated airway hyperreactivity (AHR). Our findings demonstrated an inducible expression of CD226 in activated ILC2s, enhancing their cytokine secretion and effector functions. Blocking CD226 ameliorates ILC2-dependent AHR in IL-33 and Alternaria Alternata-induced models. Interestingly, CD226 is expressed and inducible in human ILC2s, and its blocking reduces cytokine production. Finally, we showed that peripheral ILC2s in asthmatic patients exhibited elevated CD226 expression compared to healthy controls.Our findings underscore the potential of CD226 as a novel therapeutic target in ILC2s, presenting a promising avenue for ameliorating AHR and allergic asthma.

2024-04-16 | GSE264060 | GEO

Impact of the Multiple Sclerosis associated genetic variant CD226 Gly307Ser on human CD8 T cell functions

Project description:Background and Objectives: The rs763361 non-synonymous (Gly307Ser) variant in the CD226 gene has been identified as a risk factor for several immune-mediated diseases, including multiple sclerosis (MS). Compelling evidence suggests that this allele may be one of the genetic driving forces contributing to suceptibility to MS by decreasing the immune-regulatory capacity of Treg cells and increasing the pro-inflammatory potential of CD4 T cells. However, the impact of this CD gene variant on CD8 T cell functions, a population that also plays a key role in MS, remain T to be determined. Methods: In order to study whether the CD226 risk variant affects human CD8 T cells functions, we used CD8 T cells isolated from PBMC of 16-age matched healthy donors homozygous for either the protective or risk allele of CD226. We characterized these CD8 T cells upon TCR stimulation using high-parametric flow cytometry, bulk RNAseq, and through characterization of canonical signaling pathways and cytokine production. Results: Upon TCR engagment, the phenotype of ex vivo CD8 T cells bearing the protective (CD226-307Gly) or the risk (CD226-307Ser) allele of CD226 was largely overlapping. However, transcriptomic signature of CD8 T cells from the donor carrying the risk allele presented an enrichment in TCR, JAK/STAT and INFg signaling.

2024-09-13 | GSE266132 | GEO

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