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Usp22 is an intracellular regulator of systemic emergency hematopoiesis

ABSTRACT: Usp22 is an intracellular regulator of systemic emergency hematopoiesis

PROVIDER: PRJNA877206 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21440339.fastq.gz	Fastqsanger.gz
	SRR21440340.fastq.gz	Fastqsanger.gz
	SRR21440341.fastq.gz	Fastqsanger.gz
	SRR21440342.fastq.gz	Fastqsanger.gz
	SRR21440343_1.fastq.gz	Fastqsanger.gz

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Usp22 is an intracellular regulator of systemic emergency hematopoiesis

Project description:Emergency hematopoiesis is a concerted response geared towards enhanced protection from infection, involving multiple cell types and developmental stages across the immune system. Despite its importance, the underlying molecular regulation remains poorly understood. The deubiquitinase USP22 regulates the levels of monoubiquitinated histone H2B (H2Bub1), which is involved in intracellular interferon responses. Here we show that, in the absence of infection or inflammation, mice lacking Usp22 in blood and immune cells display profound systemic emergency hematopoiesis, evident by increased hematopoietic stem cell proliferation, myeloid bias, and extramedullary hematopoiesis. Functionally, loss of Usp22 results in elevated phagocytosis by neutrophilic granulocytes, and enhanced innate protection against Listeria monocytogenes infection. At the molecular level, we find this state of emergency hematopoiesis associated with transcriptional signatures of myeloid priming, enhanced mitochondrial respiration, as well as innate and adaptive immunity and inflammation. Augmented inflammatory gene expression was linked to elevated locus-specific H2Bub1 levels. Collectively, a tunable epigenetic state promotes systemic emergency hematopoiesis in a cell-autonomous manner and enhances innate protection, paving potential ways towards immune enhancement.

2022-11-02 | GSE212758 | GEO

Bone marrow adipocytes fuel emergency hematopoiesis

Project description:Hematopoiesis advances cardiovascular disease by generating inflammatory leukocytes that attack the arteries, heart and brain. While it is well documented that the bone marrow niche regulates hematopoietic stem cell proliferation and hence the systemic leukocyte pool, it is less clear how cardiovascular disease affects the vasculature forming this niche. Here we show that arterial hypertension, atherosclerosis and myocardial infarction alter the anatomy and function of bone marrow vasculature. Hypertension and atherosclerosis instigated vascular fibrosis, leakage and endothelial dysfunction in the bone marrow. Myocardial infarction induced vascular leakage and bone marrow angiogenesis via Vegf signaling. Endothelial cell-specific deletion of the Vegf receptor 2 limited emergency hematopoiesis after myocardial infarction, indicating that new vasculature supports higher blood cell production. RNA-sequencing of bone marrow endothelial cells revealed inflammatory gene expression in mice with cardiovascular disease. Endothelial cell-specific deletion of interleukin 6 or versican, which were highly expressed in mice with atherosclerosis or myocardial infarction, respectively, reduced hematopoiesis and systemic myeloid cells. Taken together, cardiovascular disease affects the vascular bone marrow niche, thus influencing hematopoietic stem cell behavior and expanding innate immune cell supply to atherosclerotic plaque and ischemic myocardium. Interrupting this feed back loop may constrain cardiovascular inflammation.

2023-11-04 | GSE169267 | GEO

Bone marrow adipocytes fuel emergency hematopoiesis

Project description:Bone marrow adipocytes fuel emergency hematopoiesis

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Spop restrains inflammation-induced emergency hematopoiesis by targeting MyD88

Project description:Spop restrains inflammation-induced emergency hematopoiesis by targeting MyD88

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Transcriptional profiling of Usp22-WT and Usp22-KO pancreatic tumor cells

Project description:RNA-seq analysis of sorted Usp22-WT and Usp22-KO tumor cells from subcutaneously implanted mouse pancreatic tumors

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Spop restrains inflammation-induced emergency hematopoiesis by targeting MyD88 [scRNA-Seq]

Project description:Spop restrains inflammation-induced emergency hematopoiesis by targeting MyD88 [scRNA-Seq]

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Spop restrains inflammation-induced emergency hematopoiesis by targeting MyD88 [Bulk RNA-Seq]

Project description:Spop restrains inflammation-induced emergency hematopoiesis by targeting MyD88 [Bulk RNA-Seq]

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ACC-MESO1 cells: Control shRNA vs USP22 shRNA

Project description:USP22 plays oncogenic role and in order to study molecular mechanism of USP22 to promote tumorigenesis, microarray analysis was performed on USP22 knockdowned cells.

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Usp22 depletion in E14 mouse ESCs

Project description:Mouse ESCs depleted of the epigenetic modifying enzyme Usp22 fail to differentiate properly. Ectopic expresison of Usp22 results in spontaneous differnetiation. In order to understand the transcriptional program underlying this biological defect, whole genome expression analysis was performed. E14 mESCs were infected with lentivirus containing shRNA targeting Usp22 or control (Luc). RNA was extracted from both samples and subjected to expression analysis by affymetrix array.

2013-05-15 | E-GEOD-42934 | biostudies-arrayexpress

USP22 controls necroptosis by regulating receptor interacting protein kinase 3 ubiquitination

Project description:Dynamic control of ubiquitination by deubiquitinating enzymes is essential for almost all biological processes. Ubiquitin-specific peptidase 22 (USP22) is part of the SAGA complex and catalyzes the removal of monoubiquitination from histone H2B, thereby regulating gene transcription. However, novel roles for USP22 have recently emerged, such as tumor development and cell death. Apart from apoptosis, the relevance of USP22 in other programmed cell death pathways still remains unclear. Here, we describe a novel role for USP22 in controlling necroptotic cell death in a variety of tumor cell lines. Loss of USP22 expression significantly delays TNF/Smac mimetic/zVAD.fmk (TBZ)-induced necroptosis, without affecting TNF-mediated NF-B activation or extrinsic apoptosis. Mass-spectrometric ubiquitin remnant profiling identified lysine 518 of Receptor-interacting protein kinase 3 (RIPK3) as USP22-dependent ubiquitination target during necroptosis induction. Mutation of K518 in RIPK3 reduced necroptosisassociated RIPK3 ubiquitination and amplified necrosome formation and necroptotic cell death. In conclusion, we identify a novel role of USP22 in necroptosis and further elucidate the relevance of ubiquitination as crucial regulator of necroptotic cell death.

2021-05-03 | PXD020909 | Pride

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