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Sepsis-secreted G6PD supports guanine generation and Histone H3K27 demethylation to drive inflammatory macrophages

ABSTRACT: Sepsis-secreted G6PD supports guanine generation and Histone H3K27 demethylation to drive inflammatory macrophages

PROVIDER: PRJNA962065 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24310661_1.fastq.gz	Fastqsanger.gz
	SRR24310661_2.fastq.gz	Fastqsanger.gz
	SRR24310662_1.fastq.gz	Fastqsanger.gz
	SRR24310662_2.fastq.gz	Fastqsanger.gz
	SRR24310663_1.fastq.gz	Fastqsanger.gz

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Sepsis-secreted G6PD supports guanine generation and Histone H3K27 demethylation to drive inflammatory macrophages

Project description:Sepsis is a complex syndrome associated with physiological, pathological, and biochemical abnormalities resulting from infection. Sepsis is the major cause of acute respiratory distress syndrome (ARDS). Extracellular vesicles (EVs) are serving as new messengers to mediate cell-cell communication in vivo. The function of EVs in sepsis patients are not well defined. We found sepsis EV encapsulating G6PD induced pro-inflammatory effects in the lung tissue by reprogramming purine metabolism. Most notably, guanine accumulation led to EZH2-mediated H3K27Me3 level. Finally Our study provides a novel mechanism of how EV reviried puring metabolism in lung tissue and leading to acute lung damage.

2024-04-30 | GSE230648 | GEO

Site-specifically acetylated G6PD

Project description:Site-specifically acetylated G6PD expressed in bacteria or cultured mammalian cells by genetically encoding the incorporation of acetylated lysine. Purified G6PD (expressed in E. coli) or immunopurified G6PD (expressed in HEK293T cells) were subjected to LC-MS/MS analysis.

2023-10-24 | PXD044906 | Pride

G6PD K403 acetylation-dependent PTM

Project description:To identify acetylation-dependent posttranslational modifications (PTMs) of G6PD, site-specifically acetylated and Flag-tagged G6PD was expressed in HEK293T cells by genetically encoding the incorporation of acetylated lysine in response to an in-frame TAG stop codon. K403-acetylated G6PD (sample) and K414-acetylated G6PD (control) were co-expressed with WT Fyn kinase and a catalytically inactive mutant of Fyn (FynDN). G6PD was immunoprecipitated using anti-Flag beads before MS analysis.

2023-10-24 | PXD041775 | Pride

NIK expression stimulated G6PD phosphorylation

Project description:Our findings establish NIK as a pivotal regulator of T cell metabolism in anti-tumor immunity and highlight a posttranslational mechanism of metabolic regulation involving the G6PD-NADPH redox system. CoIP assays revealed a strong physical interaction between NIK and G6PD in both T cells and transiently transfected 293 cells, suggesting G6PD to be a direct target of NIK. Using a phosphoprotein gel analysis approach, we demonstrated that NIK expression stimulated G6PD phosphorylation. To further study the mechanism, we performed mass spectrometry identify phosphorylation sites of G6PD stimulated by NIK

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Effect of G6PD loss on gene expression in LKB1 deficient KRAS-driven lung tumor

Project description:Cancer cells heavily rely on nicotinamide adenine dinucleotide phosphate (NADPH) to counteract oxidative stress and facilitate reductive biosynthesis. One crucial route for NADPH production operates through the oxidative pentose phosphate pathway, with a pivotal step at glucose-6-phosphate dehydrogenase (G6PD). This study delves into the repercussions of G6PD ablation on the development of lung tumors driven by the KRAS oncogene and deficient in LKB1 (KL). The research involved comparing the growth of KL lung tumors with or without G6PD, revealing a significant inhibition of KL lung tumor growth upon G6PD loss. Subsequently, RNA-seq analysis was employed to identify the alterations in gene expression following G6PD deletion, providing insights into the underlying mechanisms.

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G6PD and ACSL3 are synthetic lethal partners of NF2 in Schwann cells

Project description:Neurofibromatosis Type II is a genetic condition caused by loss of the NF2 gene, resulting in activation of the YAP/TAZ pathway and recurrent growth of benign tumors from Schwann cells, the glia of the peripheral nervous system. Unfortunately, no pharmacological therapy is currently available for NFII. Here, we undertake a genome-wide CRISPR/cas9 screen to search for synthetic-lethal genes that, when inhibited, cause death of NF2 mutant cells but not NF2 wildtype cells. We thereby identify ACSL3 and G6PD as two synthetic-lethal partners for NF2. We find that NF2 mutant Schwann cells are vulnerable to G6PD inhibition because they have low levels of ME1. G6PD and ME1 redundantly generate cytosolic NADPH needed by cells to fight oxidative stress. Lack of either one of the two is compatible with cell viability, but down-regulation of both leads to Schwann cell death. Since genetic deficiency for G6PD is tolerated in the human population, this raises the possibility that G6PD could be a pharmacological target for NFII.

2024-04-24 | GSE219136 | GEO

G6PD and ACSL3 are synthetic lethal partners of NF2 in Schwann cells

2024-04-24 | GSE219135 | GEO

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2020-11-12 | E-MTAB-9712 | biostudies-arrayexpress

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Project description:RNA-seq experiments was conducted to analyze changes in related signaling pathways and gene expression in multiple myeloma cells when G6PD was overexpression.

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Metabolic profiling of prostate cancer in skeletal microenvironments identifies G6PD as a key mediator of growth and survival

Project description:The spread of cancer to bone is invariably fatal, with complex crosstalk between tumour cells and the bone microenvironment responsible for driving disease progression. By combining in silico analysis of patient datasets with metabolomic profiling of prostate cancer cells cultured with bone cells, we demonstrate the changing energy requirements of prostate cancer cells in the bone microenvironment, identifying the pentose phosphate pathway (PPP) as elevated in prostate cancer bone metastasis, with increased expression of the PPP rate-limiting enzyme (G6PD) associated with a reduction in progression-free survival. Genetic and pharmacologic manipulation demonstrates that G6PD inhibition reduces prostate cancer growth and migration, associated with changes in cellular redox state and increased chemosensitivity. Genetic blockade of G6PD in vivo results in reduction of tumour growth within bone. In summary, we demonstrate the metabolic plasticity of prostate cancer cells in the bone microenvironment, identifying the PPP and G6PD as metabolic targets for the treatment of prostate cancer bone metastasis.

2022-02-25 | GSE190928 | GEO

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