Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Fli1 drives the terminal differentiation of a memory precursor-like NK cell during viral infection

ABSTRACT: Natural killer (NK) cells are innate lymphocytes that possess traits of adaptive immunity, such as clonal expansion, contraction, and generation of long-lived memory cells following viral infection. However, the molecular mechanisms by which clonally expanded effector NK (NKeff) cells persist to form memory cells is not well understood. Utilizing single cell RNA sequencing, we identify two Ly49H+ NKeff cell populations following mouse cytomegalovirus (MCMV) infection defined by the cell surface protein Ly6C. Ly6C– NKeff cells displayed enhanced survival during the contraction phase in a BCL2-dependent manner. Ly6C– NKeff cells displayed distinct transcriptional and epigenetic signatures compared to Ly6C+ NKeff cells, with a core epigenetic signature shared with memory precursor (MP) CD8+ T cells enriched in ETS1 and Fli1 DNA-binding motifs. Fli1 regulated memory NK cell fate by promoting terminal maturation and decreased persistence of contracting NK cells. Our results suggest that memory NK cells, similar to memory T cells, are generated by a subset of epigenetically distinct MP cell states that preferentially survive during the contraction phase of the response to viral infection.

ORGANISM(S): Mus musculus

PROVIDER: GSE176208 | GEO | 2022/01/12

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Avidity Selection of Natural Killer Response to MCMV

Project description:Natural killer (NK) cells are innate lymphocytes that possess features of adaptive immunity, such as the ability to recognize specific antigen, among others. In MCMV infection, the engagement of a subset of NK cells expressing an activating receptor Ly49H with MCMV-derived glycoprotein m157 results in a clonal-like expansion and the generation of a small pool of long-lived memory cells with higher Ly49H expression than the naive Ly49H-expressing NK cell pool. In this study, we interrogate the transcriptional differences between NK cells that express high verus low levels of Ly49H early after infection.

2019-04-09 | GSE129490 | GEO

Small RNA profiling of wildtype and Eri1-deficient mouse T cells

Project description:Natural killer (NK) cells play a critical role in early host defense to infected and transformed cells. Here we show that mice deficient in Eri1, a conserved 3M-bM-^@M-^Y-to-5M-bM-^@M-^Y exoribonuclease that represses RNA interference, have a cell-intrinsic defect in NK cell development and maturation. Eri1M-bM-^@M-^S/M-bM-^@M-^S NK cells displayed delayed acquisition of Ly49 receptors in the bone marrow and a selective reduction in Ly49D and Ly49H activating receptors in the periphery. Eri1 was required for immune-mediated control of mouse cytomegalovirus (MCMV) infection. Ly49H+ NK cells deficient in Eri1 failed to expand efficiently during MCMV infection, and virus-specific responses were also diminished among Eri1M-bM-^@M-^S/M-bM-^@M-^S T cells. We identified miRNAs as the major endogenous small RNA target of Eri1 in mouse lymphocytes. Both NK and T cells deficient in Eri1 displayed a global, sequence-independent increase in miRNA abundance. Ectopic Eri1 expression rescued defective miRNA expression in mature Eri1M-bM-^@M-^S/M-bM-^@M-^S T cells. Thus, mouse Eri1 regulates miRNA homeostasis in lymphocytes and is required for normal NK cell development and anti-viral immunity. Small RNA profiling from wildtype and Eri1-deficient mouse CD4+ T cells

2012-07-11 | E-GEOD-31920 | biostudies-arrayexpress

Small RNA profiling of wildtype and Eri1-deficient mouse T cells

Project description:Natural killer (NK) cells play a critical role in early host defense to infected and transformed cells. Here we show that mice deficient in Eri1, a conserved 3’-to-5’ exoribonuclease that represses RNA interference, have a cell-intrinsic defect in NK cell development and maturation. Eri1–/– NK cells displayed delayed acquisition of Ly49 receptors in the bone marrow and a selective reduction in Ly49D and Ly49H activating receptors in the periphery. Eri1 was required for immune-mediated control of mouse cytomegalovirus (MCMV) infection. Ly49H+ NK cells deficient in Eri1 failed to expand efficiently during MCMV infection, and virus-specific responses were also diminished among Eri1–/– T cells. We identified miRNAs as the major endogenous small RNA target of Eri1 in mouse lymphocytes. Both NK and T cells deficient in Eri1 displayed a global, sequence-independent increase in miRNA abundance. Ectopic Eri1 expression rescued defective miRNA expression in mature Eri1–/– T cells. Thus, mouse Eri1 regulates miRNA homeostasis in lymphocytes and is required for normal NK cell development and anti-viral immunity.

2012-07-11 | GSE31920 | GEO

Expression arrays of inflammatory Ly6C+ monocytes in mice primary or secondary challenged with Listeria monocytogenes

Project description:In this study we investigated the mechanisms involved in memory T-cell mediated protection using mice vaccinated with the intracellular bacterium Listeria monocytogenes. Our working hypothesis was that rapid activation of cells of the innate immune system, in particular inflammatory Ly6C+ monocytes, were essential in effective protection, in a memory T cell-dependent manner. Thus we generated a comprehensive comparison of the genetic program of activated Ly6C+ monocytes during a primary or a secondary infection with Listeria monocytogenes, at 8 hours post challenge infection. Abstract of corresponding publication: Cells of the innate immune system are essential for host defenses against primary microbial pathogen infections, yet their involvement in effective memory responses of vaccinated individuals has been poorly investigated. Here we show that memory T cells instruct innate cells to become potent effector cells in a systemic and a mucosal model of infection. Memory T cells controlled phagocyte, dendritic cell and NK or NK T cell mobilization and induction of a strong program of differentiation, which included their expression of effector cytokines and microbicidal pathways, all of which were delayed in non-vaccinated hosts. Disruption of IFN-gamma-signaling in Ly6C+ monocytes, dendritic cells and macrophages impaired these processes and the control of pathogen growth. These results reveal how memory T cells, through rapid secretion of IFN-gamma, orchestrate extensive modifications of host innate immune responses that are essential for effective protection of vaccinated hosts. Overall design: Inflammatory monocytes were purified (see below for isolation method) from 4 groups of 3 individual mice each (triplicate): (i) uninfected mice, (ii) primary infected, (iii) secondary infected, (iv) secondary infected and T-cell depleted 1 day before. Isolation of cells was done on 3 different days for true biological replicates.

2015-06-04 | E-GEOD-58014 | biostudies-arrayexpress

Natural killer cell sensing of infected cells compensates deficient Toll-like receptor but not IFN-I activity for mouse resistance to cytomegalovirus

Project description:Plasmacytoid dendritic cells (pDC) are the major source of type I IFN (IFN-I) in vivo during Murine Cytomegalovirus (MCMV) infection. This response requires pDC-intrinsic MyD88-dependent signaling by Toll Like Receptors 7/9. Provided that they express appropriate recognition receptors such as Ly49H, Natural Killer (NK) cells can directly sense and kill MCMV-infected cells. While MyD88- and Ly49H-dependent responses can contribute to MCMV control, the objective is to understand the relative importance of these 3 mechanisms. In order to decipher the relative impact of MyD88- and Ly49H-dependent mechanisms during MCMV infection, we performed a genome-wide expression analysis on total spleen of Ly49H-/-MyD88+/+, Ly49H-/-MyD88-/-, Ly49H+/+MyD88+/+ and Ly49H+/+MyD88-/- BALB/c mice at different time points after MCMV infection (d0, d1,5, d2, d3 and d6). This study includes data from the spleen BALB/c mice, under steady-state or MCMV condition at different time points. 2 to 5 mice for each mouse strain for each time point were used, and were hybridized on 5 separate batches of gene chips.

2015-04-24 | E-GEOD-62729 | biostudies-arrayexpress

Natural killer cell sensing of infected cells compensates deficient Toll-like receptor but not IFN-I activity for mouse resistance to cytomegalovirus

2015-04-24 | GSE62729 | GEO

Fate mapping of single NK cells identifies a type 1 innate lymphoid-like lineage that bridges innate and adaptive recognition of viral infection [scRNAseq_Ly49H+_NK_retrogenic_spleen]

Project description:Upon viral infection, NK cells expressing certain germline-encoded receptors are selected, expanded and maintained in an adaptive-like manner. Currently, these are thought to differentiate along a common pathway. However, by fate mapping of single NK cells upon murine cytomegalovirus (MCMV) infection, we identified two distinct NK cell lineages that contributed to adaptive-like responses. One was equivalent to conventional NK (cNK) cells while the other was transcriptionally similar to type 1 innate lymphoid cells (ILC1s). ILC1-like NK cells showed splenic-residency and strong cytokine production but also recognized and killed MCMV-infected cells, guided by activating receptor Ly49H. Moreover, they induced clustering of conventional type 1 dendritic cells and facilitated antigen-specific T cell priming early during MCMV infection, which depended on Ly49H and the NK cell-intrinsic expression of transcription factor Batf3. Thereby, ILC1-like NK cells bridge innate and adaptive viral recognition and unite critical features of cNK cells and ILC1s.

2021-08-25 | GSE180976 | GEO

Fate mapping of single NK cells identifies a type 1 innate lymphoid-like lineage that bridges innate and adaptive recognition of viral infection [scRNAseq_spleen_Ly49H+_steady-state]

2021-08-25 | GSE180975 | GEO

Fate mapping of single NK cells identifies a type 1 innate lymphoid-like lineage that bridges innate and adaptive recognition of viral infection [bulk_RNAseq_d8pi]

2021-08-25 | GSE180974 | GEO

Fate mapping of single NK cells identifies a type 1 innate lymphoid-like lineage that bridges innate and adaptive recognition of viral infection [bulk_RNAseq_steady_state]

2021-08-25 | GSE180973 | GEO