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Fluvastatin mitigates SARS-CoV-2 infection in human lung cells.

ABSTRACT: Clinical data of patients suffering from COVID-19 indicates that statin therapy, used to treat hypercholesterolemia, is associated with a better disease outcome. Whether statins directly affect virus replication or influence the clinical outcome through modulation of immune responses is unknown. We therefore investigated the effect of statins on SARS-CoV-2 infection in human lung cells and found that only fluvastatin inhibited low and high pathogenic coronaviruses in vitro and ex vivo in a dose-dependent manner. Quantitative proteomics revealed that fluvastatin and other tested statins modulated the cholesterol synthesis pathway without altering innate antiviral immune responses in infected lung epithelial cells. However, fluvastatin treatment specifically downregulated proteins that modulate protein translation and viral replication. Collectively, these results support the notion that statin therapy poses no additional risk to individuals exposed to SARS-CoV-2 and that fluvastatin has a moderate beneficial effect on SARS-CoV-2 infection of human lung cells.

SUBMITTER: Zapatero-Belinchon FJ

PROVIDER: S-EPMC8599137 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Fluvastatin mitigates SARS-CoV-2 infection in human lung cells

Project description:Clinical data of patients suffering from COVID-19 have indicated that statin therapy, used to treat hypercholesterolemia, is associated with a better clinical outcome. We therefore investigated the effect of statins on SARS-CoV-2 infection in human lung cells and found that fluvastatin inhibited coronavirus infection, while other tested statins did not. Fluvastatin inhibited high and low pathogenic coronaviruses in vitro and ex vivo in a dose-dependent manner. Proteomic analyses of infected versus uninfected lung epithelial cells treated with fluvastatin, simvastatin, or rosuvastatin revealed that all tested statins modulated the cholesterol synthesis pathways without compromising the innate antiviral immune response. Strikingly, fluvastatin treatment uniquely affected the proteome of SARS CoV 2 infected cells, specifically downregulating proteins that modulate protein translation and viral replication. These results suggest that statin therapy poses no additional risk to individuals exposed to SARS-CoV-2 and that fluvastatin may have a moderate beneficial effect on SARS CoV-2 infection by modulating protein translation.

2021-12-07 | PXD023422 | Pride

SARS-CoV-2 infection in human adult lung alveolar stem cells

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Switching of OAS1 splicing isoforms mitigates SARS-CoV-2 infection

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2021-08-02 | GSE174398 | GEO

Organotypic human lung bud microarrays identify BMP-dependent SARS-CoV-2 infection in lung cells.

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Prior influenza infection mitigates SARS-CoV-2 disease in Syrian hamsters

Project description:Seasonal infection rates of individual viruses are influenced by synergistic or inhibitory interactions between coincident viruses. Endemic patterns of SARS-CoV-2 and influenza infection overlap seasonally in the Northern hemisphere and may be similarly influenced. We explored the immunopathologic basis of SARS-CoV-2 and influenza A (H1N1) interactions in Syrian hamsters. H1N1 given 48 hours prior to SARS-CoV-2 profoundly mitigated weight loss and lung pathology compared to SARS-CoV-2 infection alone. This was accompanied by normalization of granulocyte dynamics and accelerated antigen presenting populations in bronchoalveolar lavage and blood. Using nasal transcriptomics, we identified rapid upregulation of innate and antiviral pathways induced by H1N1 by the time of SARS-CoV-2 inoculation in 48 hour dual infected animals. Dual infected animals also experienced significant transient downregulation of mitochondrial and viral replication pathways. By quantitative RT-PCR, we confirmed reduced SARS-CoV-2 viral load and lower cytokine levels throughout disease course in lung of dual infected animals. Our data confirm that H1N1 infection induces rapid and transient gene expression that is associated with mitigation of SARS-CoV-2 pulmonary disease. These protective responses are likely to begin in the upper respiratory tract shortly after infection. On a population level, interaction between these two viruses may influence their relative seasonal infection rates.

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Transcriptomic analysis reveals novel mechanisms of SARS-CoV-2 infection in human lung cells.

Project description:BackgroundSevere acute respiratory syndrome coronavirus clade 2 (SARS-CoV-2) is a single-stranded RNA virus responsible for the global pandemic of the coronavirus disease-2019 (COVID-19). To date, there are still no effective approaches for the prevention and treatment of COVID-19.ObjectiveThe present study aims to explore the possible mechanisms of SARS-CoV-2 infection in human lung cells.MethodsData interpretation was conducted by recruiting bioinformatics analysis, including Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathways analysis using downloaded data from the NCBI Gene Expression Omnibus database.ResultsThe present study demonstrated that SARS-CoV-2 infection induces the upregulation of 14 interferon-stimulated genes, indicative of immune, and interferon responses to the virus. Notably, genes for pyrimidine metabolism and steroid hormone biosynthesis are selectively enriched in human lung cells after SARS-CoV-2 infection, suggesting that altered pyrimidine metabolism and steroid biosynthesis are remarkable, and perhaps druggable features after SARS-CoV-2 infection. Besides, there is a strong positive correlation between viral ORF1ab, ORF6, and angiotensin-converting enzyme 2 (ACE2) expression in human lung cells, implying that ACE2 facilitates SARS-CoV-2 infection and replication in host cells probably through the induction of ORF1ab and ORF6.

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SARS-CoV-2 infection of human lung epithelial cells induces TMPRSS-mediated acute fibrin deposition.

Project description:Severe COVID-associated lung injury is a major confounding factor of hospitalizations and death with no effective treatments. Here, we describe a non-classical fibrin clotting mechanism mediated by SARS-CoV-2 infected primary lung but not other susceptible epithelial cells. This infection-induced fibrin formation is observed in all variants of SARS-CoV-2 infections, and requires thrombin but is independent of tissue factor and other classical plasma coagulation factors. While prothrombin and fibrinogen levels are elevated in acute COVID BALF samples, fibrin clotting occurs only with the presence of viral infected but not uninfected lung epithelial cells. We suggest a viral-induced coagulation mechanism, in which prothrombin is activated by infection-induced transmembrane serine proteases, such as ST14 and TMPRSS11D, on NHBE cells. Our finding reveals the inefficiency of current plasma targeted anticoagulation therapy and suggests the need to develop a viral-induced ARDS animal model for treating respiratory airways with thrombin inhibitors.

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Organotypic Human Lung Bud Microarrays Identify BMP-dependent SARS-CoV-2 Infection in Lung Cells

Project description:Although lung disease is the primary clinical outcome in COVID-19 patients, how SARS-CoV-2 induces lung pathology remains elusive. Here we describe a high-throughput platform to generate self-organizing ad commensurate human lung buds derived from hESCs cultured on micropatterned substrates. Lung buds resemble human fetal lungs and display proximo-distal patterning of alveolar and airway tissue directed by KGF. These lung buds are susceptible to infection by SARS-CoV-2 and endemic coronaviruses and can be used to track cell type-specific cytopathic effects in hundreds of lung buds in parallel. Transcriptomic comparisons of infected lung buds and postmortem tissue of COVID-19 patients identified an induction of BMP signaling pathway. BMP activity renders lung cells more susceptible to SARS-CoV-2 infection and its pharmacological inhibition impairs infection by this virus. These data highlight the rapid and scalable access to disease-relevant tissue using lung buds that recapitulate key features of human lung morphogenesis and viral infection biology.

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Establishment of human distal lung organoids for SARS-CoV-2 infection.

Project description: Not available

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Comparative transcriptome analyses reveal genes associated with SARS-CoV-2 infection of human lung epithelial cells.

Project description:During 2020, understanding the molecular mechanism of SARS-CoV-2 infection (the cause of COVID-19) became a scientific priority due to the devastating effects of the COVID-19. Many researchers have studied the effect of this viral infection on lung epithelial transcriptomes and deposited data in public repositories. Comprehensive analysis of such data could pave the way for development of efficient vaccines and effective drugs. In the current study, we obtained high-throughput gene expression data associated with human lung epithelial cells infected with respiratory viruses such as SARS-CoV-2, SARS, H1N1, avian influenza, rhinovirus and Dhori, then performed comparative transcriptome analysis to identify SARS-CoV-2 exclusive genes. The analysis yielded seven SARS-CoV-2 specific genes including CSF2 [GM-CSF] (colony-stimulating factor 2) and calcium-binding proteins (such as S100A8 and S100A9), which are known to be involved in respiratory diseases. The analyses showed that genes involved in inflammation are commonly altered by infection of SARS-CoV-2 and influenza viruses. Furthermore, results of protein-protein interaction analyses were consistent with a functional role of CSF2 and S100A9 in COVID-19 disease. In conclusion, our analysis revealed cellular genes associated with SARS-CoV-2 infection of the human lung epithelium; these are potential therapeutic targets.

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