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ABSTRACT: Metabolic reprogramming and host-immune response against Crimean-Congo Hemorrhagic Fever Viruses (CCHFV) during acute infection

PROVIDER: PRJNA680886 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13149417_1.fastq.gz	Fastqsanger.gz
	SRR13149417_2.fastq.gz	Fastqsanger.gz
	SRR13149418_1.fastq.gz	Fastqsanger.gz
	SRR13149418_2.fastq.gz	Fastqsanger.gz
	SRR13149419_1.fastq.gz	Fastqsanger.gz

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Host response transcriptomic analysis of Crimean-Congo hemorrhagic fever pathogenesis in the cynomolgus macaque model

Project description:A NanoString targeted gene panel was used to elucidate the transcriptomic changes occurring in non-human primate whole blood during Crimean Congo Hemorrhagic Fever Virus infection.

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Metabolic reprogramming and host-immune response against Crimean-Congo Hemorrhagic Fever Viruses (CCHFV) during acute infection

Project description:The pathogenesis and host viral interactions of the Crimean–Congo hemorrhagic fever virus (CCHFV) are convoluted and have not been evaluated previously. To understand the host immune responses against CCHFV, we have performed a global transcriptomic analysis of peripheral blood mononuclear cells from a longitudinal cohort of CCHF patients who survived, and a temporal untargeted proteomics analysis of CCHFV infected cells. Our results indicate that during the acute phase of CCHFV infection, metabolic reprogramming of the host towards central carbon metabolism including glycolysis/gluconeogenesis occurs. This could potentially be regulated by the PI3K/Akt, HIF-1, FoxO, and AMPK signaling pathways and play a central role in viral replication. Moreover, key interferon stimulating genes (ISGs: ISG12, ISG15, ISG20 and MXs: Mx1 and Mx2) are activated during infection, suggesting a role for type I and II interferon-mediated antiviral mechanisms. Targeting type I interferon response through metabolic rewiring could be an attractive therapeutic intervention for CCHFV.

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Humoral or Cellular Immunity Induced by RNA Vaccine Protects IFNAR-/- Mice against Crimean-Congo Hemorrhagic Fever Virus Infection

Project description:Crimean-Congo hemorrhagic fever (CCHF), caused by Crimean-Congo hemorrhagic fever virus (CCHFV), is on the World Health Organizations list over emerging pathogens and prioritized diseases. With global distribution, high fatality rate and no approved treatment or vaccine, CCHF constitute a treat against the global health. In the current study we show full protection of mice against lethal CCHFV infection due to mRNA-LNP vaccination. IFNAR-/- mice received two immunizations with either mRNA-LNP encoding for the CCHFV nucleoprotein, glycoproteins or a combination of both. While unvaccinated mice showed clear signs of severe disease, vaccinated mice was significantly protected. Vaccine induced immune responses due to vaccination was evaluated both in IFNAR-/- and immunocompetent mice and a strong humoral and cellular immune response was observed in both mouse models with high titers of neutralizing antibodies and primed T-cells. In addition, we conducted a proteomic analysis on liver samples from vaccinated and unvaccinated mice after CCHFV infection to determine the effect of vaccination on the protein profile. Similar to what has been observed in humans due to vaccination, there was an effect on metabolic pathways. In conclusion, this study shows very promising results regarding development of a vaccine against CCHFV.

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Orthonairovirus haemorrhagiae strain:IbAr 10200

Project description:Crimean-Congo Hemorrhagic Fever Virus raw sequence reads

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Systems-level temporal immune-metabolic profile in Crimean-Congo hemorrhagic fever virus infection

Project description:Crimean-Congo hemorrhagic fever (CCHF) caused by CCHF virus (CCHFV) is one of the epidemic-prone diseases prioritized by the World Health Organisation as public health emergency with an urgent need for accelerated research. The trajectory of host response against CCHFV is multifarious and remains unknown. Here, we reported the temporal spectrum of pathogenesis following the CCHFV infection using genome-wide blood transcriptomics analysis followed by advanced systems biology analysis, temporal immune-pathogenic alterations, and context-specific progressive and postinfection genome-scale metabolic models (GSMM) on samples collected during the acute (T0), early convalescent (T1), and convalescent-phase (T2). The interplay between the retinoic acid-inducible gene-I-like/nucleotide-binding oligomerization domain-like receptor and tumor necrosis factor signaling governed the trajectory of antiviral immune responses. The rearrangement of intracellular metabolic fluxes toward the amino acid metabolism and metabolic shift toward oxidative phosphorylation and fatty acid oxidation during acute CCHFV infection determine the pathogenicity. The upregulation of the tricarboxylic acid cycle during CCHFV infection, compared to the noninfected healthy control and between the severity groups, indicated an increased energy demand and cellular stress. The upregulation of glycolysis and pyruvate metabolism potentiated energy generation through alternative pathways associated with the severity of the infection. The downregulation of metabolic processes at the convalescent phase identified by blood cell transcriptomics and single-cell type proteomics of five immune cells (CD4+ and CD8+ T cells, CD14+ monocytes, B cells, and NK cells) potentially leads to metabolic rewiring through the recovery due to hyperactivity during the acute phase leading to post-viral fatigue syndrome.

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Host response transcriptomic analysis of Crimean-Congo hemorrhagic fever pathogenesis in the cynomolgus macaque model

Project description:Host response transcriptomic analysis of Crimean-Congo hemorrhagic fever pathogenesis in the cynomolgus macaque model

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Dual RNA-Seq characterization of host and pathogen gene expression in liver cells infected with Crimean-Congo Hemorrhagic Fever Virus

Project description:Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne virus that can cause a hemorrhagic fever in humans, with a case fatality rate of up to 50%. Cases of CCHFV have been reported in Africa, Asia, and southern Europe; and recently, due to the expanding range of its vector, autochthonous cases have been reported in Spain. Although it was discovered over 70 years ago, our understanding of the pathogenesis of this virus remains limited. We used RNA-Seq in two human liver cell lines (HepG2 and Huh7) infected with CCHFV (strain Ib 10200), to examine kinetic changes in host expression and viral replication simultaneously at 24 and 72 hours post infection. Through this, numerous host pathways were identified that were modulated by the virus including: antiviral response and endothelial cell leakage. Notably, DDX60, a cytosolic component of the RIG-I signalling pathway and OAS2 were both shown to be dysregulated. Interestingly, the PTPRR gene was induced in Huh7 cells. This has been associated with the TLR9 signalling cascade, and polymorphisms in the TLR9 gene have been associated with poor outcomes in patients. Additionally, we whole-genome sequenced CCHFV to assess viral diversity over time, and its relationship to the host response. As a result, we have demonstrated that through next-generation mRNA deep-sequencing it is possible to not only examine mRNA gene expression, but also to examine viral evolution. This demonstrates a proof-of-principle that specimens can be analyzed to identify both the virus, and host biomarkers that may have implications for prognosis.

2020-03-26 | GSE133086 | GEO

Dual RNA-Seq characterization of host and pathogen gene expression in liver cells infected with Crimean-Congo Hemorrhagic Fever Virus

Project description:Dual RNA-Seq characterization of host and pathogen gene expression in liver cells infected with Crimean-Congo Hemorrhagic Fever Virus

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Project description:Whole genome sequencing of Hyalomma marginatum, the main vector of the Crimean-Congo hemorrhagic fever virus.

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Gene Expression Patterns of Dengue Virus-Infected Children from Nicaragua Reveal a Distinct Signature of Increased Metabolism

Project description:Infection with dengue viruses (DENVs) leads to a spectrum of disease outcomes. The pathophysiology of severe versus non-severe manifestations of DENV infection may be driven by host responses, which could be reflected in the transcriptional profiles of peripheral blood immune cells. We conducted genome-wide microarray analysis of whole blood RNA from 34 DENV-infected children in Nicaragua collected on days 3–6 of illness, with different disease manifestations. Gene expression analysis identified genes that are differentially regulated between clinical subgroups. The most striking transcriptional differences were observed between dengue patients with and without shock, especially in the expression of mitochondrial ribosomal proteins associated with protein biosynthesis. In the dengue hemorrhagic fever patients, one subset of differentially expressed genes encode neutrophil-derived anti-microbial peptides associated with innate immunity. We analyzed 44 HEEBO arrays on which were hybridized RNA amplified from whole blood collected into PAXgene tubes. 34 samples were collected from DENV-infected patients who presented between days 3-6 of illness. Six convalescent samples collected 14-19 days after onset of symptoms were from two dengue fever patients, one dengue hemorrhagic fever patient and three dengue shock syndrome patients. Additionally, samples from four normal healthy individuals were also analyzed.

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