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Natural killer cell proliferation requires canonical IRE1 function during viral infection (CITE-Seq)

ABSTRACT: Natural killer cell proliferation requires canonical IRE1 function during viral infection (CITE-Seq)

PROVIDER: PRJNA992482 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25194900_1.fastq.gz	Fastqsanger.gz
	SRR25194900_2.fastq.gz	Fastqsanger.gz
	SRR25194901_1.fastq.gz	Fastqsanger.gz
	SRR25194901_2.fastq.gz	Fastqsanger.gz
	SRR25194902_1.fastq.gz	Fastqsanger.gz

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Natural killer cell proliferation requires canonical IRE1 function during viral infection (CITE-Seq)

Project description:The unfolded protein response (UPR) aims to restore ER homeostasis under conditions of high protein folding load, a function primarily serving secretory cells. Additional, non-canonical UPR functions have recently been unraveled in immune cells. We addressed the function of the inositol-requiring-enzyme 1 (IRE1) signaling branch of the UPR in NK cells in homeostasis and microbial challenge. Cell-intrinsic compound deficiency (DKO) of IRE1 and its downstream transcription factor XBP1 in NKp46 + NK cells, did not affect basal NK cell homeostasis, or overall outcome of viral MCMV infection. However, mixed bone marrow chimeras revealed a competitive advantage in the proliferation of IRE1 sufficient Ly49H + NK cells after viral infection. CITE-Seq analysis confirmed strong induction of IRE1 early upon infection, concomitant with the activation of a canonical UPR signature. Therefore, we conclude that cell-intrinsic IRE1/XBP1 activation is required for NK cell proliferation early upon viral infection, as part of a canonical UPR response.

2023-10-27 | GSE236820 | GEO

Natural killer cell proliferation requires canonical IRE1 function during viral infection

Project description:Natural killer cell proliferation requires canonical IRE1 function during viral infection

| PRJNA992477 | ENA

Natural killer cell proliferation requires canonical IRE1 function during viral infection (RNA-Seq)

2023-10-27 | GSE236819 | GEO

Natural killer cell proliferation requires canonical IRE1 function during viral infection (RNA-Seq)

Project description:Natural killer cell proliferation requires canonical IRE1 function during viral infection (RNA-Seq)

| PRJNA992481 | ENA

IRE1-dependent transcriptional change under a canonical endoplasmic-reticulum stressing stimulus and upon diauxic shift in Saccharomyces cerevisiae cells

Project description:Ire1 is an endoplasmic reticulum (ER)-located transmembrane protein that triggers the unfolded protein response. I recently noticed that Ire1 is activated not only in response to ER accumulation of unfolded proteins but also alongside diauxic shift in yeast Saccharomyces cerevisiae cells. I thus asked how different the Ire1-target genes upon two distinct scenes, a canonical ER -stressing stimuli and diauxic shift. Thus NGS transcriptome analysis was performed by using IRE1+ and ire1-delta mutant yeast cells under these conditions.

2019-03-01 | E-MTAB-6923 | biostudies-arrayexpress

Natural killer cell proliferation requires canonical IRE1 function during viral infection

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-10-27 | GSE236822 | GEO

Novel Bioinformatics Method for Identification of Genome-Wide Non-Canonical Spliced Regions using RNA-Seq Data

Project description:We developed a bioinformatics approach called the Read-Split-Walk (RSW) pipeline, and evaluated it using two Ire1? heterozygous and two Ire1?-null samples. The 26nt non-canonical splice site in Xbp1 was detected as the top hit by our RSW pipeline in heterozygous samples but not in the negative control Ire1? knockout samples. We compared the Xbp1 results from our approach with results using the alignment program BWA, STAR, Exonerate and the Unix “grep” command. We then applied our RSW pipeline to RNA-Seq data from the SKBR3 human breast cancer cell line. RSW reported a large number of non-canonical spliced regions for 108 genes in chromosome 17, which were identified by an independent study. Identification of non-canonical spliced regions for mouse MEF samples (two Ire1? heterozygous and two Ire1?-null samples)

2014-07-29 | E-GEOD-54631 | biostudies-arrayexpress

Regulated Ire1-dependent mRNA decay requires no-go mRNA degradation to maintain endoplasmic reticulum homeostasis in S. pombe

Project description:The unfolded protein response (UPR) continually monitors the protein folding capacity of the endoplasmic reticulum (ER). In S. pombe, Ire1, an ER membrane-resident kinase/endoribonuclease, utilizes a mechanism of selective degradation of ER-targeted mRNAs (RIDD) to maintain ER homeostasis. Here, we used a genetic screen to identify factors critical to the Ire1-mediated UPR response in S. pombe and found several proteins, Dom34, Hbs1 and SkiX, previously implicated in ribosome rescue and the no-go-decay (NGD) pathway. Ribosome profiling in ER-stressed cells lacking these factors revealed that Ire1-mediated cleavage on ER-associated mRNAs results in ribosome stalling on the cleaved transcript and, ultimately in full mRNA degradation. The process engages mechanisms of precise, iterated cleavage of the mRNAs and ribosome rescue. This clear signature allowed us to discover hundreds of novel mRNA targets of Ire1. Our results reveal that the UPR in S. pombe executes RIDD in an intricate interplay between Ire1, translation, and the NGD surveillance pathway, and establish a critical role for NGD in maintaining ER homeostasis.

2017-09-14 | GSE98934 | GEO

Canonical WNT signaling-dependent gating of MYC requires a non-canonical CTCF function at a distal binding site

Project description:Canonical WNT signaling-dependent gating of MYC requires a non-canonical CTCF function at a distal binding site

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The IRE1-XBP1 pathway promotes natural killer cell responses against viral infection and cancer by regulation of c-Myc

Project description:Natural killer (NK) cells are critical mediators of host immunity against infectious disease and cancer. The intrinsic regulators of NK cells are not fully understood. Here, we demonstrate that the ER stress sensor inositol-requiring enzyme 1 (IRE1α) and its substrate transcription factor X-box-binding protein 1 (XBP1) critically drive NK cell-mediated responses against viral infection and tumors. IRE1α and XBP1 were essential for the robust expansion of activated mouse and human NK cells. Transcriptome analysis revealed the transcription factor c-Myc as a novel and direct target of XBP1 for downstream regulation of NK cell proliferation. Genetic ablation or pharmaceutical blockade of IRE1α downregulated c-Myc, whereas overexpression of XBP1 resulted in c-Myc hyperactivation. NK cells lacking c-Myc demonstrated a functional deficit comparable to IRE1α or XBP1 deficiency. Overall, our study identifies a novel IRE1-XBP1-cMyc axis in NK cell immunity, providing new insight into the host immune response against infection and cancer.

2019-04-01 | GSE113214 | GEO

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