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Identification of human exTregs as CD16+CD56+ cytotoxic CD4+ T cells.

ABSTRACT: Identification of human exTregs as CD16+CD56+ cytotoxic CD4+ T cells.

PROVIDER: PRJNA896569 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22129700_1.fastq.gz	Fastqsanger.gz
	SRR22129700_2.fastq.gz	Fastqsanger.gz
	SRR22129701_1.fastq.gz	Fastqsanger.gz
	SRR22129701_2.fastq.gz	Fastqsanger.gz
	SRR22129702_1.fastq.gz	Fastqsanger.gz

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Identification of human exTregs as CD16+CD56+ cytotoxic CD4+ T cells.

Project description:In chronic inflammatory diseases with an autoimmune component like atherosclerosis, some regulatory T cells (Tregs) lose their regulatory function and become exTregs. The present study was designed to identify surface markers specific of human exTregs, using an integrated approach from sorted mouse exTregs bulk RNA-Seq to human scRNA-Seq with CITE-Seq, to sort human exTregs and characterize them by transcriptome and function. We crossed inducible Treg lineage tracker mice (FoxP3-eGFP-Cre-ERT2 ROSA26CAG-fl-stop-fl-tdTomato) to atherosclerosis-prone Apoe -/- mice, sorted Tregs and exTregs from lymph nodes and spleens of replicate mice and determined their transcriptomes by bulk RNA sequencing (RNA-Seq). A support vector machine (SVM) approach identified the leading signature genes for exTregs as CST7, NKG7, GZMA, PRF1, TBX21 and CCL4. Projecting these genes onto feature maps of human PBMC single cell (sc)RNA-Seq with CITE-Seq from 61 subjects with and without atherosclerosis showed that CST7, NKG7, GZMA, PRF1, TBX21 and CCL4 mapped to CD4 T cells that expressed CD56 and CD16. This finding was validated in a second, independent scRNA- and CITE-Seq dataset. Even in healthy volunteers, a subpopulation of CD4 T cells expressed both CD56 and CD16. Bulk RNA-Seq identified these cells as cytotoxic CD4 T cells, which was functionally confirmed in a cell killing assay. DNA sequencing for TCRβ showed clonal expansion of Treg CDR3 sequences in CD16 + CD56 + exTregs. Taken together, we identify mouse and human exTregs as cytotoxic CD4 T cells.

2023-07-25 | GSE217010 | GEO

Gene expression profiling of NKG2C+ NK cells generated from inflammatory CD34+DNAM-1brCXCR4+ and Lin-CD34- CD16+CD56- blood precursors

Project description:There is limited knowledge on the origin and development of the ample spectrum of human NK cells, particularly of specialized NK subsets. Here, we characterized the NK cell progeny of CD34+DNAM-1bright CXCR4+ precursors that reside in healthy bone marrow and circulate in the peripheral blood (PB) of patients with chronic infections/inflammation. including HIV, HCV or HCMV reactivation after HSC transplantation. Unlike conventional CD34+ precursors they rapidly differentiated in vitro into cytotoxic, IFNγ-secreting CD94/NKG2C+KIR+CD57+ maturing NK cell progenies with HCMV-inhibiting activity. Progeny characterization led also to identification of an additional new PB Lin-CD56-CD16+ precursor giving rise to the same CD94/NKG2C+KIR+CD57+ maturing NK cell progenies. Microarray analysis of NK cell progenies revealed a signature compatible with maturing adaptive NK cells. In vivo circulation of multiple common lymphocyte precursors with rapid development to NKG2C+ NK cell progeny is steadily occurring and may thus be a crucial resource for the prompt control of HCMV. We used microarray to compare the transcriptional profiles of human NKG2C+ NK cells derived from i) CD34+DNAM1brightCXCR4+ precursors, ii) Lin-CD34-CD16+CD56- precursors, iii) peripheral blood.

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Human CD14+CD16- and CD16+ monocyte-derived macrophages primed by GM-CSF or M-CSF

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Human CD14+CD16- and CD16+ monocyte-derived macrophages primed by GM-CSF or M-CSF

2015-04-21 | GSE68061 | GEO

In vitro differentiated CD56-positive ILC transcriptional profiling via scRNA-seq

Project description:The innate cytotoxic Natural Killer (NK) cells emerged during hematopoiesis through a linear model of human NK development, yet how in vitro model of NK differentiation recapitulates in vivo process is largely under-explored. Here, we established that NK cell trajectory in vitro can be divided into 4 stages by sequential acquisition of CD161, CD56 and CD94 in which CD56 bifurcation can separate Stage 3a (CD56-) as ILC-precursor that can further give rise to stage 3b (CD56+) and stage 4 (CD94+). Re-plating results together with clonal tracing between S3b, S4 and ILC3 subsets supported a diverging developmental point between NK and ILC3 lineages occurs at the S3a stage and accompanied by the loss of the ILC3 potential as NK cell maturation progress from S3b toward S4. Single-cell transcriptomic and RNA-velocity connected the NK cytotoxic trajectory with a coordinated network of transcription factors (TFs) that are highly compatible with primary NK cell gene program.

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