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MAIT cells regulate NK cell mediated tumor immunity (NanoString)

ABSTRACT: This study reveals the dichotomous role of MAIT cells in regulating NK cell mediated anti-tumor immunity.

ORGANISM(S): Mus musculus

PROVIDER: GSE179140 | GEO | 2021/07/06

REPOSITORIES: GEO

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MAIT cells regulate NK cell mediated tumor immunity (RNA-Seq)

Project description:This study reveals the dichotomous role of MAIT cells in regulating NK cell mediated anti-tumor immunity.

2021-07-06 | GSE179139 | GEO

MAIT cells regulate NK cell mediated tumor immunity (NanoString)

Project description:MAIT cells regulate NK cell mediated tumor immunity (NanoString)

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MAIT cells regulate NK cell mediated tumor immunity (RNA-Seq)

Project description:MAIT cells regulate NK cell mediated tumor immunity (RNA-Seq)

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Gene expression profiles of MAIT cells, MAIT-iPSCs, hiPSCs, hESCs, and reMAIT cells

Project description:To show the similarity among MAIT-iPSCs, hiPSCs and hESCs and the gradual change of global gene expression of reMAIT cells along with differentiation, this experiment was designed. MAIT cells, MAIT-iPSCs, hiPSCs, hESCs, MAIT cells, and reMAIT cells at the several differerent stages of differentiation were collected. Then, they were applied in this experiment.

2013-03-21 | E-GEOD-44559 | biostudies-arrayexpress

CIS is a potent checkpoint in NK cell-mediated tumour immunity

Project description:Natural killer (NK) cells have evolved to detect and kill aberrant cells with this activity being governed by the cytokine interleukin (IL)-15 and foreign and self-ligands. We have identified CIS (Cytokine-inducible SH2-containing protein; Cish gene) as the critical negative regulator of IL-15 signalling in NK cells. Cish was rapidly induced in response to IL-15 and deletion of Cish rendered NK cells hypersensitive to IL-15, as evidenced by superior proliferation, survival, IFN-γ production and cytotoxicity towards tumours. This was associated with enhanced JAK/STAT signalling in Cish-deleted NK cells. Correspondingly, CIS interacted with the tyrosine kinase JAK1, inhibiting its enzymatic activity and targeting JAK for proteasomal degradation. Cish-/- mice were resistant to melanoma, prostate and breast cancer metastasis in vivo, and this was intrinsic to NK cell activity. This study has uncovered a potent checkpoint in NK cell-mediated tumour immunity and holds promise for novel immunotherapies directed at blocking CIS function.

2016-05-20 | GSE79409 | GEO

Microarray expression profiling of NKT and MAIT subsets in different organs of B6-MAIT/CAST mice.

Project description:MAIT cells (MAITs) represent an abundant T lymphocyte subset with unique specificity for microbial metabolites presented by the MHC-1b molecule, MR1. MAIT conservation along evolution indicates important, non-redundant functions, but their low frequency in mice has hampered their detailed characterization. Here, we performed a transcriptomic analysis of murine MAITs in comparison with NKT subsets and with mainstream T cells in spleen and peripheral organs of B6-MAIT/CAST mice expressing a Rorc-GFP transgene. MAIT and NKT cells have been FACS-sorted after tetramer staining (MR1:5-OP-RU Tet+ for MAIT, CD1d:PBS57Tet+ for NKT), and 1/17 subsetting based on the expression of Rorc.

2018-12-03 | E-MTAB-7133 | biostudies-arrayexpress

The RNA m6A reader YTHDF2 controls NK cell anti-tumor and anti-viral immunity

Project description:N6-methyladenosine (m6A) is the most prevalent post-transcriptional modification on RNA. NK cells are the predominant innate lymphoid cells that mediate anti-viral and anti-tumor immunity. However, whether and how m6A modifications affect NK cell immunity remains unknown. Here, we discover that YTHDF2, a well-known m6A reader, is upregulated in NK cells upon activation by cytokines, tumors, and cytomegalovirus infection. Ythdf2 deficiency in NK cells impairs NK cell anti-tumor and anti-viral activity in vivo. YTHDF2 maintains NK cell homeostasis and terminal maturation, correlating with modulating NK cell trafficking and regulating Eomes, respectively. YTHDF2 promotes NK cell effector function and is required for IL-15-mediated NK cell survival and proliferation by forming a STAT5-YTHDF2 positive feedback loop. Transcriptome-wide screening identifies Tardbp to be involved in cell proliferation or survival as a YTHDF2-binding target in NK cells. Collectively, we elucidate the biological roles of m6A modifications in NK cells and highlight a new direction to harness NK cell anti-tumor immunity.

2021-05-08 | GSE174027 | GEO

BPTF Depletion Enhances NK Cell Mediated Antitumor Immunity

Project description:In mouse models, the bromodomain PHD finger transcription factor (BPTF) chromatin remodeling subunit in tumor cells suppresses natural killer (NK) cell antitumor activity. In vitro, BPTF suppresses NK cell cytolytic activity to mouse and human cancer cell lines, demonstrating a conserved function.

2017-04-28 | GSE85756 | GEO

TGF-β and CIS inhibition overcomes NK cell suppression to restore anti-tumor immunity

Project description:Antibodies targeting “immune checkpoints” have revolutionized cancer therapy by reactivating tumor-resident cytotoxic lymphocytes, primarily CD8 T cells. Interest in targeting analogous pathways in other cytotoxic lymphocytes is growing. Natural killer (NK) cells are key to cancer immunosurveillance by eradicating metastases and driving solid tumor inflammation. NK cell anti-tumor function is dependent on the cytokine interleukin (IL)-15. Ablation of the IL-15 signaling inhibitor CIS (Cish) enhances NK cell anti-tumor immunity by increasing NK cell metabolism and persistence within the tumor microenvironment (TME). The TME has also been shown to impair NK cell fitness via the production of immunosuppressive TGF-b, a suppression which occurs even in the presence of high IL-15 signaling. Here, we identified an unexpected interaction between CIS and the TGF-b signaling pathway in NK cells. Independently, Cish- and Tgfbr2- deficient NK cells are both hyper-responsive to IL-15 and hypo-responsive to TGF-b, with dramatically enhanced anti-tumor immunity. Remarkably, when both these immunosuppressive genes are simultaneously deleted in NK cells, mice are largely resistant to tumor development, suggesting that combining suppression of these two pathways might represent a novel therapeutic strategy to enhance innate anti-cancer immunity.

2022-04-11 | GSE200134 | GEO

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