Identification of tissue regulatory T cell precursors in lymphoid organs [ATAC-Seq]
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ABSTRACT:
PROVIDER: PRJNA541532 | ENA |
REPOSITORIES: ENA
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Project description:Identification of tissue regulatory T cell precursors in lymphoid organs
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2020-01-01 | GSE130875 | GEO
Project description:Regulatory T (Treg) cells maintain self-tolerance in lymphoid tissues, and specialized Treg cells accumulate and perform homeostasis and regenerative functions in non-lymphoid tissues. A common differentiation pathway of homeostasis-promoting Treg cells in non-lymphoid tissues from a putative precursor remains elusive. By using novel reporter mice and single-cell RNA-sequencing, we identified precursor stages of the IL-33 receptor ST2-expressing non-lymphoid tissue Treg population in spleen and lymph nodes. Molecular profiling of these precursors versus mature tissue Treg cells revealed their sequence of differentiation on a single-cell level. Global chromatin profiling of non-lymphoid tissue Treg cells and progenitor populations revealed a stepwise acquirement of open chromatin accessibility at tissue Treg genes. Mechanistically, we identified and validated the basic leucine zipper transcription factor, ATF-like (Batf) as a driver of the molecular tissue Treg program. Understanding this tissue program will help to harness regenerative properties of tissue Treg cells for therapy.
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Project description:This SuperSeries is composed of the SubSeries listed below.
2020-01-01 | GSE130884 | GEO
Project description:Innate lymphoid cells (ILCs) serve as sentinels in mucosal tissues, sensing release of soluble inflammatory mediators, rapidly communicating danger via cytokine secretion, and functioning as guardians of tissue homeostasis. Although ILCs have been studied extensively in model organisms, little is known about these âfirst respondersâ in humans, especially their lineage and functional kinships to cytokine-secreting T helper cell (Th) counterparts. Here, we report gene regulatory circuitries for four human ILCâTh counterparts derived from mucosal environments, revealing that each ILC subset diverges as a distinct lineage from Th and circulating natural killer cells, but shares circuitry devoted to functional polarization with their Th counterparts. Super-enhancers demarcate cohorts of cell identity genes in each lineage, uncovering new modes of regulation for signature cytokines, novel molecules that likely impart important functions to ILCs, and potential mechanisms for autoimmune disease SNP associations within ILCâTh subsets. Molecular profiling of innate lymphoid and T helper cells subsets purified from tonsils and NK cells purified from peripheral blood using Assay for Transposase-Accessible Chromatin (ATAC) and chromatin immunoprecipitation (H3K4me3 and H3K27ac).
2016-05-13 | E-GEOD-77299 | biostudies-arrayexpress