Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1017157 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR26058682_1.fastq.gz | Fastqsanger.gz | |||
| SRR26058682_2.fastq.gz | Fastqsanger.gz | |||
| SRR26058683_1.fastq.gz | Fastqsanger.gz | |||
| SRR26058683_2.fastq.gz | Fastqsanger.gz | |||
| SRR26058684_1.fastq.gz | Fastqsanger.gz |
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Project description:Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging tick-borne virus causing a high fatality of 12-50% in infected patients. In-depth understanding of the SFTSV induced pathogenesis mechanism is critical for developing effective anti-SFTS therapeutics.
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Project description:Severe fever with thrombocytopenia syndrome (SFTS) is a new tick-borne infectious disease caused by a new SFTS virus (SFTSV). Due to its 12%-50% high fatality rate and the possibility of pandemic transmission, as well as no specific antiviral drugs for the treatment so far, SFTSV has been listed as one of the top 10 priority infectious diseases by the World Health Organization. Currently, there are rare studies of transcriptomic analysis for the patients infected with SFTSV, which makes it difficult to deeply understand the life cyle and pathogenicity of this virus. To explore the differences of transcripts after SFTSV infection, we performed a longitudinal sampling study to systematically investigate the chronological changes of viral load and transcriptomic and epigenetic characterization using white blood cells from SFTSV patients. The results showed significant changes in the expression of some genes from onset to recovery of SFTSV infection. Moreover, these differentially expressed genes showed good consistency in the three patients at different stages of treatment, which may contribute to the pathophysiology of SFTSV and thus lead to a breakthrough in SFTSV therapy. Moreover, by m6A-seq, we found some genes that might be regulated by m6A. This study in transcript changes and RNA modification may open a brand new direction to our understanding of SFTSV and play an important role in the drugs discovery for effective treatment.
2021-08-05 | GSE165518 | GEO
Project description:Severe fever with thrombocytopenia syndrome banyangvirus (SFTSV) induces immunopathogenic disease with high fatality rate. Despite serious health concern, the mechanisms underlying clinical manifestations are largely unknown. Here, we applied targeted proteomics and single-cell transcriptomics analyses to examine the differential immune landscape of SFTS patient blood. Serum immunoprofiling distinguished Low-risk and High-risk clusters of SFTS patients with differential inflammatory cytokine levels, which matched with disease severity. Single-cell transcriptomics analysis of SFTS patient blood at different infection state showed pronounced expansion of B cells with the alteration of B-cell subset populations, specifically in fatal patients. Furthermore, plasma cells were the primary reservoir of SFTSV replication with the downregulation of IFN pathway. This study identifies not only the molecular signatures of serum inflammatory profile and B cell lineage population, but also plasma cells as the viral reservoir in SFTSV-induced fatal patients, suggesting the alteration of B cell function linked to SFTS lethal infection.
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Project description:To investigate the mechanisms that contribute to the pathogenesis resulting from SFTSV infection, transcriptomic analysis was performed with blood samples collected from SFTS patients.
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Project description:Dabie bandavirus, also termed as severe fever with thrombocytopenia syndrome virus (SFTSV), was first isolated in China in 2010. At this time, the virus was found to have spread to South Korea, Japan, and other countries. A high case fatality rate is reported for SFTS, ranging from 12–50% within various sources. Several omics for clinical studies among SFTS patients as well as studies of cultured SFTSV have attempted to characterize the relevant molecular biology and epidemiology of the disease. However, a global serum proteomics analysis among SFTS patients has not yet been reported to date. Thrombocytopenia and multiple organ failure are the major immediate causes of death among SFTS patients. In this study, serum proteomic changes related to thrombocytopenia, abnormal immune response, and inflammatory activation were documented in SFTS patients. These findings provide useful information forunderstanding the clinical manifestations of SFTS.
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Project description:We performed scRNA-seq on 27 PBMC samples from 15 SFTS patients (including four deceased and 11 surviving) and four healthy controls. We found that the immune cell landscape was reprogrammed in SFTS and characterized by monocyte shift to intermediate type along with complement activation, perturbation of plasmablasts composition, and highly exhausted T cells, all were correlated with lethal consequences. We identified the overexpression of interferon-stimulated genes across most immune cell types post SFTSV infection, which were simultaneously related to older age, high viremia and hyper-inflammation. These data collectively supported the intermediate monocytes and IFN-I-inducible plasmablasts to be major targets for SFTSV infection, and proposed the pivotal role of IFN-I response in exacerbating hyper-inflammation and lethal SFTS, which might help to identify therapeutic strategies for SFTS.
2021-08-14 | GSE175499 | GEO
Project description:Severe fever with thrombocytopenia syndrome (SFTS) is an acute infectious disease caused by novel bunyavirus (SFTSV), with a mortality rate of 6.3% ~ 30%. To date, there is no specific treatment for SFTS. Previously, our studies demonstrate that SFTSV surface glycoprotein (Glycoprotein N, Gn) is a potential target for the development of SFTS vaccine or therapeutic antibodies, and anti-Gn neutralizing antibodies play a protective role in SFTS infection. Compared with traditional antibodies, nanobodies from camelids have various advantages including small molecular weight, high affinity, low immunogenicity and convenient production by gene engineering, etc. In this study, we combined next generation sequencing (NGS) with proteomics technology and bioinformatics analysis to high-throughput screen monoclonal anti-Gn nanobodies from camel immunized with Gn protein. We identified 19 anti-Gn monoclonal nanobody sequences, and selected 6 of them for recombinant protein expression and purification. Among these 6 anti-Gn nanobodies, nanobody 57493 was validated to be highly specific for Gn.
2024-01-26 | PXD032731 | Pride
Project description:Severe fever with thrombocytopenia syndrome phlebovirus (SFTSV), listed in the WHO most dangerous pathogens, has 12-30% fatality rates with a characteristic thrombocytopenia syndrome. With a majority of clinically diagnosed SFTSV patients older than ~50 years, age is a critical risk factor for SFTSV morbidity and mortality. Here, we report an age-dependent ferret model of SFTSV infection and pathogenesis that fully recapitulates the clinical manifestations of human infections. While young adult ferrets (≤2 years old) did not show any clinical symptoms and mortality, SFTSV-infected aged ferrets (≥4 years old) demonstrated severe thrombocytopenia, reduced white blood cells, and high fever with 93% mortality rate. Moreover, significantly higher viral load was observed in aged ferrets. Transcriptome analysis of SFTSV-infected young ferrets revealed strong interferon-mediated anti-viral signaling, whereas inflammatory immune responses were markedly upregulated and persisted in aged ferrets. Thus, this immunocompetent age-dependent ferret model should be useful for anti-SFTSV therapy and vaccine development.
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