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RNA-Seq on wild-type and Ezh2 knock-out invariant natural killer T cells and CD44hi CD4+ T cells

ABSTRACT: RNA-Seq on wild-type and Ezh2 knock-out invariant natural killer T cells and CD44hi CD4+ T cells

PROVIDER: PRJNA528411 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8759692.fastq.gz	Fastqsanger.gz
	SRR8759693.fastq.gz	Fastqsanger.gz
	SRR8759694.fastq.gz	Fastqsanger.gz
	SRR8759695.fastq.gz	Fastqsanger.gz

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RNA-Seq on wild-type and Ezh2 knock-out invariant natural killer T cells and CD44hi CD4+ T cells

Project description:Several subsets of NKT cells have been identified, including IFNγ-producing NKT1 cells, IL-4-producing NKT2 cells and IL-17-producing NKT17 cells. We sought to determine to the effect of loss of the polycomb repressive complex 2 protein Ezh2 on gene expression in NKT cells and CD44high CD4+ T cells from mice. Transcriptional profiles of iNKT cells from wild-type (WT) and Ezh2 KO iNKT mice were determined.

2019-03-22 | GSE128652 | GEO

MELK mediates the stability of EZH2 throught site-specific phosphorylation in extranodal natural killer/T-cell lymphoma

Project description:Oncogenic EZH2 is overexpressed and extensively involved in the pathophysiology of different cancers including extranodal natural killer/T-cell lymphoma (NKTL). However, the mechanisms regarding EZH2 upregulation is poorly understood, and it still remains untargetable in NKTL. In this study, we examine EZH2 protein turnover in NKTL and identify MELK kinase as a regulator of EZH2 ubiquitination and turnover. Using quantitative mass spectrometry (MS) analysis, we observed a MELK-mediated increase of EZH2 S220 phosphorylation along with a concomitant loss of EZH2 K222 ubiquitination, suggesting a phosphorylation-dependent regulation of EZH2 ubiquitination. MELK inhibition through both chemical and genetic means led to ubiquitination and destabilization of EZH2 protein. Importantly, we determine that MELK is upregulated in NKTL, and its expression correlates with EZH2 protein expression as determined by tissue microarray derived from NKTL patients. Interestingly, FOXM1, which connected MELK to EZH2 signaling in glioma, was not involved in mediating EZH2 ubiquitination. Furthermore, we identify USP36 as the deubiquitinating enzyme which deubiquitinates EZH2 at K222. These findings uncover an important role of MELK and USP36 in mediating EZH2 stability in NKTL. Moreover, MELK overexpression led to decreased sensitivity to Bortezomib treatment in NKTL based on deprivation of EZH2 ubiquitination. Therefore, modulation of EZH2 ubiquitination status by targeting MELK may be a new therapeutic strategy for NKTL patients with poor Bortezomib response.

2019-08-26 | PXD015008 | Pride

Gene Regulation by Histone Deacetylase 7 During Invariant Natural Killer T Cell Development

Project description:We have found that the signal-dependent chromatin modulator Histone Deacetylase 7 interacts with and corepresses the signature transcription factor of invariant natural Killer T (iNKT) cells, ZBTB16. This study was designed to determine the global effect on transcription of a gain-of-function mutant of HDAC7 during iNKT cell development and function. Va14/Ja18 T cell receptor transgenic thymocytes and splenocytes, which develop preferentially into iNKT cells, were profiled by RNA-seq with and without expression of a gain-of-functon HDAC7 transgene (HDAC7dP)

2018-05-08 | GSE105026 | GEO

RNA-seq profiles of wildtype and Ezh2 knockout mouse natural killer T cell subsets

Project description:Natural killer T (NKT) cells identified by CD1d-tetramer and TCRb were isolated from the thymi of wild type and Ezh2 knockout mice. The NKT cells were FACS sorted into different stages based on the surface expression of CD44 and NK1.1.

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Mitochondrial Metabolism is Essential for Invariant Natural Killer T Cell Development and Function

Project description:Mitochondrial Metabolism is Essential for Invariant Natural Killer T Cell Development and Function

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Gene Regulation by Histone Deacetylase 7 During Invariant Natural Killer T Cell Development

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Mitochondrial Metabolism is Essential for Invariant Natural Killer T Cell Development and Function

Project description:Conventional T cell fate and function are determined by coordination between cellular signaling and metabolism. Invariant natural killer T (iNKT) cells are a subset of “innate-like” pre-activated T cells whose dependence on mitochondrial metabolism remains elusive. Here, we showed that mature iNKT cells have reduced mitochondrial respiratory reserve and iNKT cell development was highly sensitive to perturbation of mitochondrial function. Mice with T cell-specific ablation of Rieske Iron-Sulphur protein (T-Uqcrfs1-/-), an essential subunit of mitochondrial complex III, had a dramatic reduction of iNKT cells in the thymus and periphery, but minimal effects on conventional T cell development. Residual iNKT cells in T-Uqcrfs1-/- mice retained ability to proliferate but exhibited increased apoptosis, decreased TCR signaling and impaired responses to TCR and IL-15 stimulation. Furthermore, knocking down RISP in mature iNKT cells diminished their cytokine production, correlating with reduced NFATC2 activity. Collectively, our data demonstrate a critical role for mitochondrial metabolism in iNKT cell development and activation outside of supporting bioenergetic demands.

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EZH2 identifies the precursors for trained immunity of human natural killer cells

Project description:EZH2 identifies the precursors for trained immunity of human natural killer cells

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Gene expression profile of canine Chimeric Antigen Receptor (CAR) Engineered invariant Natural Killer T (iNKT) cells

Project description:Gene expression profile of canine Chimeric Antigen Receptor (CAR) Engineered invariant Natural Killer T (iNKT) cells

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Critical role for very-long chain sphingolipids in invariant natural killer T cell development and homeostasis

Project description:The role of sphingolipids (SLs) in the immune system has come under increasing scrutiny recently due to the emerging contributions that these important membrane components play in regulating a variety of immunological processes. The acyl chain length of SLs appears particularly critical in determining SL function. Here we show a role for very-long acyl chain SLs (VLC-SLs) in invariant natural killer T (iNKT) cell maturation in the thymus and homeostasis in the liver. Ceramide synthase 2 (CerS2) null mice, which lack VLC-SLs, were susceptible to a hepatotropic strain of lymphocytic choriomeningitis virus, which is due to a reduction in the number of iNKT cells. Bone marrow chimera experiments indicated that hematopoietic-derived VLC-SLs are essential for maturation of iNKT cells in the thymus, whereas parenchymal-derived VLC-SLs are crucial for iNKT cell survival and maintenance in the liver. Our findings suggest a critical role for VLC-SL in iNKT cell physiology.

2017-10-15 | GSE104205 | GEO

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