Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Host transcriptome in human 239T cells infected with HPIV3 expressing wild-type virus versus its matrix-deleted counterpart

ABSTRACT: Paramyxoviruses (PMVs) exploit the host's translation machinery to enhance their replication. We found that the PMV matrix protein is crucial in this process, inhibiting host protein synthesis while boosting viral protein production. This occurs through interactions with the core exon-junction complex (cEJC), a key player in mRNA biogenesis. Disruption of this interaction using siRNA led to increased viral replication but did not affect other viruses like SARS-CoV-2. Our study unveils a novel mechanism by which PMVs hijack host cell resources, offering new targets for antiviral therapy.

ORGANISM(S): Human respirovirus 3 Homo sapiens

PROVIDER: GSE274026 | GEO | 2024/10/09

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

SARS-CoV-2 infection rewires host cell metabolism and is potentially susceptible to mTORC1 inhibition

Project description:Viruses hijack host cell metabolism to acquire the building blocks required for viral replication. Understanding how SARS-CoV-2 alters host cell metabolism could lead to potential treatments for COVID-19, the disease caused by SARS-CoV-2 infection. Here we profile metabolic changes conferred by SARS-CoV-2 infection in kidney epithelial cells and lung air-liquid interface cultures and show that SARS-CoV-2 infection increases glucose carbon entry into the TCA cycle via increased pyruvate carboxylase expression. SARS-CoV-2 also reduces host cell oxidative glutamine metabolism while maintaining reductive carboxylation. Consistent with these changes in host cell metabolism, we show that SARS-CoV-2 increases activity of mTORC1, a master regulator of anabolic metabolism, in cell lines and patient lung stem cell-derived airway epithelial cells. We also show evidence of mTORC1 activation in COVID-19 patient lung tissue. Notably, mTORC1 inhibitors reduce viral replication in kidney epithelial cells and patient-derived lung stem cell cultures. This suggests that targeting mTORC1 could be a useful antiviral strategy for SARS-CoV-2 and treatment strategy for COVID-19 patients, although further studies are required to determine the mechanism of inhibition and potential efficacy in patients.

2021-02-19 | ST001709 | MetabolomicsWorkbench

Expression data from primary human hepatocyte oxygenated co-cultures infected by HCV and human liver biopsies from HCV patients.

Project description:Viruses lack the basic machinery needed to replicate and therefore must hijack host metabolism to propagate. Virus-induced metabolic alterations have yet to be systematically studied in the context of the host transcriptional regulation, offering insight into host-pathogen metabolic interplay. In this work we identified Hepatitis C Virus (HCV)-responsive regulators by coupling system-wide metabolic flux analysis with targeted perturbation of nuclear receptors in primary human hepatocytes. We find HCV-induced up-regulation of glycolysis, ketogenesis and drug metabolism, controlled by activation of HNF4α, PPARα, FXR and PXR, respectively. Pharmaceutical inhibition of HNF4α reversed HCV-induced glycolysis, blocking viral replication while increasing apoptosis in infected cells showing a viral-induced dependence on glycolysis. In contrast, pharmaceutical inhibition of PPARα or FXR reversed HCV-induced ketogenesis, but increased viral replication demonstrating a unique host anti-viral response. Our results show that viral-induced changes to host metabolism can be detrimental to its lifecycle demonstrating a distinct biological complexity. In this dataset, we include the expression data obtained from primary human hepatocyte oxygenated co-cultures infected or not infected by HCV and human sanp frozen liver biopsys from HCV patients at earley stages.

2016-10-07 | GSE84587 | GEO

Effect of depletion of Igf2bp3 on gene expression during VSV infection in RAW 264.7 cells and mice PMs

Project description:N6-methyladenosine (m6A) modification is the most abundant RNA modification in both host mRNA and viral RNA transcripts. Dynamic regulation and recognition of m6A modification widely participate in post-transcriptional regulation of many biological processes. This project aims to define the regulation role of IGF2BP3, a m6A recognition protein, in viral infection, especially in RNA viral infection. In this study, the transcriptomes of Vesicular stomatitis virus (VSV)-infected WT/Igf2bp3-KO RAW264.7 cells and mouse peritoneal macrophages (PMs) were analyzed, suggesting the role of IGF2BP3 in the host's innate immune responses during viral infection and enhancement.

2024-02-18 | GSE255680 | GEO

Determination of dsRNA interactome upon Sindbis virus infection in human cells identifies SFPQ as a critical proviral factor

Project description:Viruses are obligate intracellular parasites, which depend on the host cellular machineries to replicate their genome and complete their infectious cycle. Long double stranded (ds)RNA is a common viral by-product originating during RNA virus replication, which is universally sensed as a danger signal to trigger the antiviral response. As a result, viruses hide dsRNA intermediates into viral replication factories and have evolved strategies to hijack cellular proteins for their benefit. The characterization of the host factors associated to viral dsRNA and involved in viral replication remains a major challenge to develop new antiviral drugs against RNA viruses. Here, we performed anti-dsRNA immunoprecipitation followed by Mass Spectrometry to fully characterize the dsRNA interactome in Sindbis virus (SINV) infected human HCT116 cells. Among the validated factors, we characterized SFPQ (Splicing factor, proline-glutamine rich) as a new dsRNA-associated factor upon SINV infection. We proved that SFPQ is able to directly bind dsRNAs in vitro, that SFPQ association to dsRNA is independent on single-stranded (ss)RNA flanking regions in vivo and that it is able to bind the viral genome upon infection. Furthermore, we showed that either knock-down or knock-out of SFPQ reduced SINV infection in human HCT116 and SKNBE cells, suggesting that SFPQ could enhance viral replication. Overall, this study not only represents a resource to further study SINV dsRNA-associated factors upon infection but also identifies SFPQ as a new proviral dsRNA binding protein.

2024-05-22 | PXD024554 | Pride

Metabolic enzymes moonlight as selective autophagy receptors to protect plants against viral induced cellular damage

Project description:RNA viruses co-opt host intracellular structures to create specialized replication sites and advance infection. The response of the host to this membrane disruption is poorly understood. In this study, we explore Arabidopsis thaliana's reaction to three distinct viruses that commandeer varying cellular compartments. Our findings reveal autophagy is significantly induced within systemically infected tissues, with autophagy disruption rendering plants highly sensitive to infection. Contrary to being an antiviral defense, quantitative analyses of viral RNA and proteomes establish autophagy as a critical component of the host's tolerance mechanism. Further analysis of mitochondrial hijacking by the Turnip Crinkle Virus has shown that despite perturbing mitochondrial integrity, the virus does not trigger a typical mitophagy response. Instead, viral infection activates a distinct selective autophagy mechanism, where oligomeric metabolic enzymes moonlight as selective autophagy receptors and degrade key executors of defense and cell death. Altogether, our study reveals an autophagy-regulated metabolic rheostats that gauges cellular integrity during viral infection.

2024-07-23 | GSE264734 | GEO

Identification of SLFN5 as an intrinsic inhibitor of viral transcription antagonized by the herpes simplex virus ubiquitin ligase ICP0

Project description:Intrinsic antiviral host factors are proteins that can confer cellular defense by limiting virus replication. Viruses hijack ubiquitin machinery to modify the cellular proteome to subvert these host defenses. The herpes simplex virus 1 (HSV-1) expresses ICP0, which functions as an E3 ubiquitin ligase required to promote infection. Cellular substrates of ICP0 have been discovered as host barriers to infection but the mechanisms for inhibition of viral gene expression are not fully understood. To identify new restriction factors antagonized by ICP0, we compared the proteomes associated with viral DNA (vDNA) during HSV-1 infection with wild-type (WT) virus and a mutant lacking functional ICP0 (ΔICP0). We identified the cellular protein Schlafen 5 (SLFN5) as a new ICP0 target that binds vDNA during HSV-1 ΔICP0 infection. We demonstrated that ICP0 mediates ubiquitination of SLFN5 which leads to its proteasomal degradation. In the absence of ICP0, we demonstrate SLFN5 binds vDNA to represses HSV-1 transcription by limiting accessibility of RNA polymerase II to viral promoters. These results identify SLFN5 as a new restriction factor that inhibits viral transcription and document the first viral countermeasure reported to overcome SLFN antiviral activity.

2020-09-14 | PXD018773 | Pride

Influenza non-structural protein 1 (NS1) localization plays a key role in the anatagonism of host antiviral processes.

Project description:The influenza virus is opportunistic by nature and is capable of subverting cellular signalling pathways for the benefit of viral replication. The function of non-structural protein 1 (NS1) as a core component for the influenza virus to interfere with host antiviral activity has been well cited in literature. However, the mechanism as to how NS1 is capble of subverting the host's innate immune system is unknown. NS1 has a unique capability to migrate between both the cytoplasm and nucleus of infected cells. To assess if NS1 interference operates a stratagy pertaining to a mechanism involved with nuclear-located signalling processes we designed two mutant virsus; WSNdelNS1 which encodes a deletion to prevent complete NS1 expression and WSN3M which encodes a NS1-variant that is defective in NS1 nuclear-translocation, thus preventing NS1 from entering the nuclus of infected cells.

2020-08-12 | GSE156060 | GEO

Transcriptome analysis of BNRF1 depletion in P3HR1-Z/R-HT cells

Project description:EBV tegument protein, BNRF1, was found to inhibit a common host restriction factor, the SMC5/6 complex, during primary infection and viral lytic replication. RNAseq was used to identify host and viral transcriptome changes in BNRF1 knock-out P3HR1-Z/R-HTI cells, to get insights into other viral processes that is inhibited by the SMC5/6 complex.

2022-04-08 | GSE182349 | GEO

A protein-proximity screen reveals that Ebola virus co-opts the mRNA decapping complex through the scaffold protein EDC4

Project description:Understanding the molecular interactions of host cells with Ebola virus (EBOV) is integral for further therapeutic development of antivirals. We performed a proximity-dependent protein interaction screen for six of seven EBOV proteins to characterize the EBOV-host interactome. Using network analysis, putative EBOV interacting proteins were mapped to a human protein interactome. We overlayed viral protein interactions onto the host network. Within this map, several known EBOV-host protein interactions were identified, as well as several cell processes, such as RNA processing, previously implicated in EBOV replication. Furthermore, this interactome revealed novel interactions between EBOV proteins and host proteins arranged in functional complexes. As proof of this concept, we characterized the interaction between EBOV VP35 and the mRNA decapping complex, which regulates mRNA turnover in host cells. Our protein-protein interaction data demonstrate that VP35 engages multiple components of this complex by binding binds the scaffold protein EDC4. Inhibiting expression of mRNA decapping complex components EDC4, EDC3, or DCP2 inhibited viral replication by reducing early viral RNA synthesis. Our approach examining EBOV-host protein interactions in conjunction with network analysis reveals how EBOV interacts with entire cellular machines as opposed to singular cell proteins to promote its replication.

2023-12-14 | MSV000093669 | MassIVE

SND1 binds SARS-CoV-2 negative-sense RNA and promotes viral RNA synthesis through NSP9

Project description:Regulation of viral RNA biogenesis is fundamental to productive SARS-CoV-2 infection. To characterize host RNA-binding proteins involved in this process, we biochemically identified proteins bound to genomic and subgenomic SARS-CoV-2 RNAs. We find that the host protein SND1 specifically binds to the 5'-end of negative-sense viral RNA and is required for SARS-CoV-2 RNA synthesis. SND1-depleted cells form smaller replication organelles and display diminished virus growth kinetics. We discover that NSP9, a viral RNA-binding protein and direct SND1 interaction partner, is covalently linked to the 5'-ends of positive and negative-sense RNAs produced during infection. These linkages occur at replication-transcription initiation sites, consistent with NSP9 priming viral RNA synthesis. Mechanistically, SND1 remodels NSP9 occupancy and alters the covalent linkage of NSP9 to initiating nucleotides in viral RNA. Our findings implicate NSP9 in the initiation of SARS-CoV-2 RNA synthesis and unravel an unsuspected role of a cellular protein in orchestrating viral RNA production.

2023-10-03 | GSE217429 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data