Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA392331 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR5767620_1.fastq.gz | Fastqsanger.gz | |||
| SRR5767620_2.fastq.gz | Fastqsanger.gz | |||
| SRR5767621_1.fastq.gz | Fastqsanger.gz | |||
| SRR5767621_2.fastq.gz | Fastqsanger.gz | |||
| SRR6806243.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 8 |
Similar Datasets
Project description:Natural killer cells (NKs) are abundant in the human decidua. Several diseases of poor placental development are associated with first pregnancies, and we thus looked to characterize differences in decidual NKs in first versus repeated pregnancies. We discovered a population unique to repeated pregnancies, which possesses a novel transcriptome and epigenetic signature, characterized with high expression levels of the receptors NKG2C and LILRB1. Activation of these receptors leads to increased production and secretion of IFNγ and VEGFa, the latter found to support vascular sprouting and trophoblast-tumor growth. We propose that this population represents NK “memory” of pregnancy, and have named these cells Pregnancy Trained decidual NK cells (PTdNKs). We further suggest that the precursors of PTdNKs are found in the endometrium. PTdNKs may prove useful in understanding and treating disorders of poor placentation.
2018-05-25 | GSE100636 | GEO
Project description:Previous research on adaptive NK cells in rhesus macaques suffered from the lack of specific antibodies to differentiate between inhibitory CD94/NKG2A and stimulatory CD94/NKG2C heterodimeric receptors. Recently we reported an expansion of NKG2C receptor-encoding genes in rhesus macaques, but their expression and functional role on primary NK cells remained unknown due to this deficit. Thus, we established monoclonal antibodies 4A8 and 7B1 which show identical specificities and bind to both NKG2C-1 and NKG2C-2 but neither react with NKG2C-3 nor NKG2A on transfected cell lines. Using a combination of 4A8 and Z199 antibodies in multicolor flow cytometry we detected broad expression (4-73%) of NKG2C-1 and/or NKG2C-2 (NKG2C-1/2) on primary NK cells in rhesus macaques from our breeding colony. Stratifying our data to CMV-positive and CMV-negative animals, we noticed a higher proportion (23-73%) in primary NK cells expressing NKG2C-1/2 in CMV+ as compared to CMV- macaques (4-5%). These NKG2C-1/2-positive NK cells in CMV+ macaques are characterized by lower expression of IL12RB2, ZBTB16 and SH2D1B as well as high expression of IFN-gamma, indicating that antibody 4A8 detects CMV-associated adaptive NK cells. Single cell RNA seq data of 4A8-positive NK cells from a CMV-positive individual demonstrated that a high proportion of these adaptive NK cells transcribe in addition to NKG2C-1/2 also NKG2C-3, but interestingly NKG2A as well. Remarkably, NKG2C-1 and in particular NKG2C-2 have a higher affinity to Mamu-E as compared to NKG2A. Primary NK cells exposed to Mamu-E-expressing target cells displayed strong degranulation as well as IFN-gamma expression of 4A8+ adaptive NK cells of rhCMV+ animals that was not evident in rhCMV- animals. Thus, despite co-expression of inhibitory and stimulatory CD94/NKG2 receptors the higher number of different stimulatory NKG2C receptors and their higher binding avidity to Mamu-E outreach inhibitory signaling via NKG2A. These data demonstrate the evolutionary conservation of the CMV-driven development of NKG2C-positive adaptive NK cells with particular molecular signatures in primates and with changes in gene copy numbers and regulation and in ligand binding strength of NKG2C isotypes. Thus, rhesus macaques represent a suitable and valuable nonhuman primate animal model to study the CMV-NKG2C liaison in vivo.
2022-09-07 | GSE211613 | GEO
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.
2020-12-31 | GSE136570 | GEO
Project description:Preimplantation Factor Effect on Endometrial and Decidual Cells
| PRJNA209047 | ENA
Project description:The fate of the human endometrium is determined during the mid-luteal window of implantation, coinciding with differentiation of endometrial stromal cells (EnSCs) into specialized decidual cells. Upon embryo implantation, differentiating EnSCs transform the endometrium into the decidua of pregnancy; whereas falling progesterone levels in the absence of pregnancy lead to tissue breakdown and menstruation. We used single-cell RNA sequencing to map the transcriptomic changes in primary EnSCs along a decidual time-course and in response to withdrawal of differentiation signals. We demonstrate that decidual transformation starts with a precipitous transcriptional response, which is followed by synchronous transition of EnSCs through intermediate states before emerging as divergent subpopulations, representing decidual cells and senescent decidual cells. Single-cell analysis of timed luteal phase biopsies identified multiple endometrial epithelial subpopulations and immune cells, most prominently uterine NK cells. In the stroma, transition from receptive to post-receptive endometrial state was marked by progression of EnSCs along diverging transcriptional trajectories, involving genes with conserved branching dynamics in vivo and in vitro. Our findings indicate that specification of EnSCs into distinct decidual subpopulations underpins endometrial fate decisions during the window of implantation.
2020-01-06 | GSE127918 | GEO
Project description:CD8+ T cells, critical mediators of adaptive immunity, may also exhibit innate-like properties, such as surface expression of NKG2C, an activating receptor typically associated with natural killer (NK) cells. We demonstrate that, similar to NK cells, NKG2C+TCRαβ+CD8+ T cells are associated with prior HCMV exposure. In addition to expressing several NK cell markers (CD56, KIR), NKG2C+CD8+ T cells are oligoclonal and do not upregulate PD1 despite chronic activation. Furthermore, NKG2C+CD8+ T cells from some individuals exhibit high effector function against leukemia cells and HCMV-infected fibroblasts, dictated by NKG2C and TCR specificity. Importantly, we observe that co-triggering of CD3 and NKG2C results in increased degranulation and IFN-γ production by NKG2C+CD8+ T cells in an additive fashion. Transcriptomic analysis reveals that the transcription factor BCL11B, a regulator of T cell developmental fate, is significantly down-modulated in NKG2C+CD8+ T cells when compared to conventional NKG2C-CD8+ T cells. BCL11B deletion in conventional CD8 T cells results in the emergence of a CD56+CD94+DAP12+NKG2C+CD45RA+CCR7-PD1-/low T cell population with activity against HLA-E+ targets. Given their intrinsic capacity to recognize diseased cells coupled with lack of PD-1 upregulation despite chronic stimulation, NKG2C+CD8+ T cells represent a novel lymphocyte population that straddles the boundary between innate and adaptive immunity, presenting an attractive alternative for cellular therapy, including CAR T-based therapies.
2021-10-14 | GSE179981 | GEO
Project description:In this study, we characterize the fusion protein produced by the EPC1-PHF1 translocation in Low Grade Endometrial Stromal Sarcoma (LG-ESS) and Ossifying FibroMyxoid Tumors (OFMT). We express the fusion protein and necessary controls in K562 Cells. The fusion protein assembles a mega-complex harboring both NuA4/TIP60 and PRC2 subunits and enzymatic activities and leads to mislocalization of chromatin marks in the genome, linked to aberrant gene expression.
2020-12-03 | GSE162543 | GEO
Project description:Expression data of Human Decidual NK cells, Peripheral blood, CD56Bright NK cells and CD56Dim NK cells on HGU133A arrays
| PRJNA317468 | ENA
Project description:Expression data of Human Decidual NK cells, Peripheral blood, CD56Bright NK cells and CD56Dim NK cells on HGU133B arrays
| PRJNA317469 | ENA