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A unique epigenomic landscape defines CD8+ tissue-resident memory T cells [multiome]

ABSTRACT: Multiome datasets of CD8+ T cells in LCMV and HSV infections

ORGANISM(S): Mus musculus

PROVIDER: GSE243593 | GEO | 2023/09/20

REPOSITORIES: GEO

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A unique epigenomic landscape defines CD8+ tissue-resident memory T cells [Perturb-seq]

Project description:scATAC-seq datasets of CD8+ T cells in LCMV and HSV infections

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A unique epigenomic landscape defines CD8+ tissue-resident memory T cells

Project description:Memory T cells provide rapid and long-term protection against infection and tumors. The memory CD8+ T cell repertoire contains phenotypically and transcriptionally heterogeneous subsets with specialized functions and recirculation patterns. While these T cell populations have been well characterized in terms of differentiation potential and function, the epigenetic changes underlying memory T cell fate determination and tissue-residency remain largely unexplored. Here, we examined the single-cell chromatin landscape of CD8+ T cells over the course of acute viral infection. We reveal an early bifurcation of memory precursors displaying distinct chromatin accessibility and define epigenetic trajectories that lead to a circulating (TCIRC) or tissue-resident memory T (TRM) cell fate. While TRM cells displayed a conserved epigenetic signature across organs, we demonstrate that these cells exhibit tissue-specific signatures and identify transcription factors that regulate TRM cell populations in a site-specific manner. Moreover, we demonstrate that TRM cells and exhausted T (TEX) cells are distinct epigenetic lineages that are distinguishable early in their differentiation. Together, these findings show that TRM cell development is accompanied by dynamic alterations in chromatin accessibility that direct a unique transcriptional program resulting in a tissue-adapted and functionally distinct T cell state.

2022-04-02 | GSE199799 | GEO

A unique epigenomic landscape defines CD8+ tissue-resident memory T cells

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

2023-09-19 | GSE243597 | GEO

Development pathway for skin resident memory CD103+CD8+ T cells

Project description:Tissue resident memory T cells (TRM) provide superior protection against infection localised to extra-lymphoid compartments in the body. Here we show that CD103+CD8+ TRM cells develop in skin from killer cell lectin-like receptor (KLR)G1-negative precursors that selectively infiltrate the epithelial layer. In the skin, a combination of chemokine-guided epithelial entry, local interleukin (IL)-15 and transforming growth factor (TGF)-Î² signalling is required for formation and survival of these long-lived memory cells. Importantly, TRM differentiation results in the gradual acquisition of a unique transcriptional profile that differs from that expressed by memory cells in the circulation and other types of skin-resident intra-epithelial T cells, such as the dendritic epidermal T cells (DETC). We provide a comprehensive molecular and developmental framework for the local differentiation of a distinct type of peripheral memory T cell that contributes to an important first-line of immune defence in barrier tissues such as skin and mucosa. 24 samples were analyzed: 3 replicates of memory gB-T CD8+. CD103+ T cells isolated from the skin of C57/BL6 mice on day 30 p.i. with HSV KOS. 3 replicates of memory P14 CD8+ T cells isolated from gut of mice on day 60 p.i. with LCMV Armstrong. 3 replicates of memory gB-T CD8+ T cells from the lung of mice on day 30 p.i. with influenza WSN. 3 replicates of memory CD62L high CD8+ T cells from the spleen of mice on day 30 p.i. with HSV KOS. 3 replicates of memory CD62L low CD8+ T cells from the spleen of mice of day 30 p.i. with HSV KOS. 3 replicates of Î³Î´-DETC isolated from the skin of C57/BL6 mice on day 30 p.i. with HSV KOS. 3 replicates of Î±Î²-DETC from naive TCRÎ´-/- mice; and 3 replicates of naive gB-T CD8+ T cells from the spleen of naive gB-T transgenic mice.

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A unique epigenomic landscape defines CD8+ tissue-resident memory T cells

Project description:A unique epigenomic landscape defines CD8+ tissue-resident memory T cells

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single cell multiome for MSCs

Project description:we used single-cell multiome analysis to profile the transcriptome and epigenome of MSCs from four healthy donors.

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