Influenza A virus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA561570 | ENA |
REPOSITORIES: ENA
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Project description:Long noncoding RNAs (lncRNAs) participate in regulating many biological processes. However, their roles in influenza A virus (IAV) pathogenicity are largely unknown. Here, we analyzed the expression profile of lncRNAs and mRNAs in the H3N2-infected cells and H7N9-infected cells by high-throughput sequencing
2020-05-13 | GSE135482 | GEO
Project description:Influenza A virus (IAV) is the etiological agent of a highly contagious acute respiratory disease, which causes a considerable socioeconomic burden despite annual vaccination campaigns. Therefore, it is essential to better understand IAV-host cells interaction to help design innovative antiviral therapies. In that regard, recent studies revealed the interplay between metabolic and immune signaling pathways. However, it remains unknown whether IAV alters lung tissues metabolism and what is its potential functional consequence. Using in vitro and in vivo models as well as human respiratory fluids and in-depth metabolomics analysis, we first found that IAV infection alters the glycolysis and mitochondrial oxidative respiration in lung tissues, leading to the accumulation of several immunometabolites in the bronchoalveolar airspaces. We next focused on one mitochondria-derived metabolite, i.e. succinate as its accumulation was found not only in the lungs of IAV-challenged mice but also in the tracheal fluids of IAV-infected patients. Remarkably, we found that succinate exhibits a potent antiviral activity both in vitro and in vivo as it inhibits H1N1 and H3N2 IAV strains and it strongly decreases IAV-triggered inflammatory response. The underlying inhibiting mechanism involves a disruption of IAV replication cycle. Indeed, succinate prevents specifically the nuclear export of the viral nucleoprotein NP, likely due to a specific succinylation at K87 site. Finally, we showed that mice receiving succinate through the intranasal route are more resistant to IAV pneumonia than mock-treated animals. Hence, our study identifies the metabolite succinate as a novel component of the host antiviral arsenal.
2022-03-24 | PXD018419 | Pride
Project description:To study the impact of influenza infection on gene expression changes in the colon, mice were intra-nasally infected with 30 plaque forming units of the mouse-adapted H3N2 IAV strain Scotland/20/1974. PBS-treated mice served as controls. The colons were collected 7 days post-infection.
2019-12-01 | E-MTAB-6707 | biostudies-arrayexpress
Project description:Influenza A virus (IAV) is a human respiratory pathogen that causes yearly global epidemics, and sporadic pandemics due to human adaptation of pathogenic strains. Efficient replication of IAV in different species is, in part, dictated by its ability to exploit the genetic environment of the host cell. To investigate IAV tropism in human cells, we evaluated the replication of IAV strains in a diverse subset of epithelial cell lines. HeLa cells were refractory to growth of human H1N1 and H3N2, and low pathogenic avian influenza (LPAIs) viruses. Interestingly, a human isolate of the highly pathogenic avian influenza (HPAI) virus H5N1 successfully propagated in HeLa cells to levels comparable to a human lung cell line. Heterokaryon cells generated by fusion of HeLa and permissive cells supported H1N1 growth, suggesting the absence of a host factor(s) required for replication of H1N1, but not H5N1, in HeLa cells. The absence of this factor(s) was mapped to reduced nuclear import, replication, and translation, and deficient viral budding. Using reassortant H1N1:H5N1 viruses, we found that the combined introduction of nucleoprotein (NP) and hemagglutinin (HA) from H5N1 was necessary and sufficient to enable H1N1 growth. Overall, this study suggests the absence of one or more cellular factors in HeLa cells that results in abortive replication of H1N1, H3N2, and LPAI viruses, but can be circumvented upon introduction of H5N1 NP and HA. Further understanding of the molecular basis of this restriction will provide important insights into virus-host interactions that underlie IAV pathogenesis and tropism.
2019-11-21 | GSE140759 | GEO
Project description:We used RNA sequencing to comprehensively map the expression of coding and non-coding RNAs in primary human alveolar epithelial type II cells (AECIIs), alveolar macrophages (AMs), human lung tissue, and the epithelial cell line A549 during infection with IAV strain H3N2 Panama
2022-12-16 | GSE206606 | GEO
Project description:The circulation of seasonal influenza A viruses (IAVs) in humans relies on effective evasion and subversion of the host immune response. While the evolution of seasonal H1N1 and H3N2 viruses to avoid humoral immunity is well characterized, relatively little is known about the evolution of innate immune antagonism phenotypes in these viruses. Numerous studies have established that only a small subset of infected cells are responsible for initiating the type I and type III interferon (IFN) response during IAV infection, emphasizing the importance of single cell studies to accurately characterize the IFN response during infection. We developed a flow cytometry-based method to examine transcriptional changes in IFN and interferon stimulated gene (ISG) expression at the single cell level. We observed that NS segments derived from seasonal H3N2 viruses are more efficient at antagonizing IFN signaling but less effective at suppressing IFN induction, compared to the pdm2009 H1N1 lineage. We compared a collection of NS segments spanning the natural history of the current seasonal IAV lineages, and demonstrate long periods of stability in IFN antagonism potential, punctuated by occasional phenotypic shifts. Altogether, our data reveal significant differences in how seasonal and pandemic H1N1 and H3N2 viruses antagonize the human IFN response at the single cell level.
2024-07-12 | GSE272070 | GEO
Project description:Influenza A Virus (IAV) is a recurring respiratory virus with antiviral therapies of limited use. Understanding host proteins essential for IAV infection can identify targets for alternative host-directed therapies (HDTs). Using affinity purification-mass spectrometry and global phosphoproteomic and protein abundance analyses with three IAV strains (pH1N1, H3N2, H5N1) in three human cell types (A549, NHBE, THP-1), we mapped 332 IAV-human protein-protein interactions and identified 13 IAV-modulated kinases. Whole exome sequencing of patients who experienced severe influenza revealed several genes, including the structural scaffold protein AHNAK, with predicted loss-of-function variants that were also identified in our proteomic analyses. Of our identified host factors, 54 significantly altered IAV infection upon siRNA knockdown, and two factors, COPB1 and AHNAK, were also essential for productive infection by SARS-CoV-2. Finally, 16 compounds targeting our identified host factors suppressed IAV replication, with three targeting ATP6V1A, CDK2 and FLT3 showing pan-antiviral activity across influenza and coronavirus families. This study provides a comprehensive network model of IAV infection in human cells, identifying functional host targets for pan-viral HDT. This project includes the global proteomic data (abundance and phosphorylation), the AP-MS data has been submitted separately as its own dataset and has its own dataset identifier.
2023-07-25 | PXD035900 | Pride
Project description:E2 exposure significantly decreased peak viral titer in hNECs from female donors. We used microarray analyses to identify global gene expression patterns between E2 and vehicle exposed hNECs from female donors Influenza causes an acute infection characterized by virus replication in respiratory epithelial cells. The severity of influenza and other respiratory diseases changes over the life course and during pregnancy in women, suggesting that sex steroid hormones, such as estrogens, may be involved. Using primary, differentiated human nasal epithelial cell (hNEC) cultures from adult male and female donors, we exposed cultures to the endogenous 17β-estradiol (E2) or select estrogen receptor modulators (SERMs), then infected cultures with a seasonal influenza A virus (IAV) to determine whether estrogenic signaling could affect the outcome of IAV infection and whether these effects where sex-dependent. Estradiol, raloxifene, and bisphenol A decreased IAV titers in hNECs from female, but not male, donors. The estrogenic decrease in viral titer was dependent on the genomic estrogen receptor- 2 (ESR2) as neither genomic ESR1 nor non- genomic GPR30 were expressed in hNEC cultures and addition of the genomic ER antagonist ICI 182,780 reversed the antiviral effects of E2. Treatment of hNECs with E2 had no effect on interferon or chemokine secretion, but significantly downregulated cell metabolic processes, including genes that encode for zinc finger proteins, many of which contain estrogen response elements in their promoters. These data provide novel insights into the cellular and molecular mechanisms of how natural and synthetic estrogens impact IAV infection in respiratory epithelial cells derived from humans. Primary human nasal epithelial cells from females were exposed to E2 for 24h prior to infection, then infected with an H3N2 strain of influenza a virus for 2 hours. At 24 and 48h post infection, hNECs were collected in Trizol for RNA extraction and hybridization on Affymetrix Human Gene ST 2.0 microarrays.
2015-12-31 | E-GEOD-75208 | biostudies-arrayexpress
Project description:A novel avian-origin H7N9 influenza A virus (IAV) emerged in China in early 2013 causing mild to lethal human respiratory infections. H7N9 originated from multiple reassortment events between avian viruses and carries genetic markers of human adaptation. Determining whether H7N9 induces a host-response closer to human or avian IAV is important to better characterize this emerging virus. Here we compared the human lung epithelial cell response to infection with A/Anhui/01/13 (H7N9) or highly pathogenic avian-origin H5N1, H7N7, or human seasonal H3N2 IAV.
2014-01-16 | GSE49840 | GEO
Project description:A novel avian-origin H7N9 influenza A virus (IAV) emerged in China in early 2013 causing mild to lethal human respiratory infections. H7N9 originated from multiple reassortment events between avian viruses and carries genetic markers of human adaptation. Determining whether H7N9 induces a host-response closer to human or avian IAV is important to better characterize this emerging virus. Here we compared the human lung epithelial cell response to infection with A/Anhui/01/13 (H7N9) or highly pathogenic avian-origin H5N1, H7N7, or human seasonal H3N2 IAV. Here, polarized confluent monolayers of Calu-3 cells were infected apically with the avian-origin IAVs A/Anhui/01/2013 (H7N9) [Anhui01], A/Netherland/219/2003 (H7N7) [NL219], A/Vietnam/1203/2004 (H5N1) [VN1203], or a human seasonal virus A/Panama/2007/1999 (H3N2) [Pan99] at an MOI of 1. Time-matched mocks were also included using the same cell stock as the rest of the samples. Culture medium (same as what the virus stock is in) was used for the mock infections. Quadruplicate wells were infected for each virus/timepoint. Measured timepoints were 3, 7, 12 and 24 hours post-inoculation and the RNA was used for transcriptional analysis via microarray.
2014-01-16 | E-GEOD-49840 | biostudies-arrayexpress