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| http://dx.doi.org/10.1016/j.ekir.2020.07.003 | DOI Listing |
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miR-24-3p Is Antiviral Against SARS-CoV-2 by Downregulating Critical Host Entry Factors.
Viruses
November 2024
Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N6, Canada.
Despite all the progress in treating SARS-CoV-2, escape mutants to current therapies remain a constant concern. Promising alternative treatments for current and future coronaviruses are those that limit escape mutants by inhibiting multiple pathogenic targets, analogous to the current strategies for treating HCV and HIV. With increasing popularity and ease of manufacturing of RNA technologies for vaccines and drugs, therapeutic microRNAs represent a promising option.
View Article and Find Full Text PDFDetrimental Effects of Anti-Nucleocapsid Antibodies in SARS-CoV-2 Infection, Reinfection, and the Post-Acute Sequelae of COVID-19.
Pathogens
December 2024
Department of Viral Infections, Research Institute for Microbial Diseases, Osaka University, Suita 565-0871, Japan.
Antibody-dependent enhancement (ADE) is a phenomenon in which antibodies enhance subsequent viral infections rather than preventing them. Sub-optimal levels of neutralizing antibodies in individuals infected with dengue virus are known to be associated with severe disease upon reinfection with a different dengue virus serotype. For Severe Acute Respiratory Syndrome Coronavirus type-2 infection, three types of ADE have been proposed: (1) Fc receptor-dependent ADE of infection in cells expressing Fc receptors, such as macrophages by anti-spike antibodies, (2) Fc receptor-independent ADE of infection in epithelial cells by anti-spike antibodies, and (3) Fc receptor-dependent ADE of cytokine production in cells expressing Fc receptors, such as macrophages by anti-nucleocapsid antibodies.
View Article and Find Full Text PDFUnlabelled: Eastern equine encephalitis virus (EEEV) is an arthropod-borne, positive-sense RNA alphavirus posing a substantial threat to public health. Unlike similar viruses such as SARS-CoV-2, EEEV replicates efficiently in neurons, producing progeny viral particles as soon as 3-4 hours post-infection. EEEV infection, which can cause severe encephalitis with a human mortality rate surpassing 30%, has no licensed, targeted therapies, leaving patients to rely on supportive care.
View Article and Find Full Text PDFEvaluation of Three Viral Capsid Integrity qPCR Methods for Wastewater-Based Viral Surveillance.
Food Environ Virol
January 2025
School of Environmental and Natural Sciences, Bangor University, Bangor, Gwynedd, LL57 2UW, UK.
Article Synopsis
- CI-qPCR assays provide a viable alternative to traditional cell culture methods for assessing virus viability in wastewater, specifically focusing on human pathogens.
- The study evaluated three CI-qPCR methods (Crosslinker, TruTiter, and PMAxx) on various viruses like HAdV and SARS-CoV-2, revealing differences in sensitivity and effectiveness between them.
- Findings suggest that while PMAxx struggled with detecting certain heat-inactivated viruses, both PMAxx and TruTiter successfully identified intact viruses in wastewater, showing promise for improving public health monitoring and response to emerging viral threats.
Exploring the Replication and Pathogenic Characteristics of Alpha, Delta, and Omicron Variants of SARS-CoV-2.
Int J Mol Sci
November 2024
Research Center for Global and Local Infectious Diseases, Oita University, Yufu, Oita 879-5593, Japan.
The variants of concern (VOCs) of SARS-CoV-2 have exhibited different phenotypic characteristics in clinical settings which are yet to be fully explored. This study aimed to characterize the viral replication features of major VOCs of SARS-CoV-2 and their association with pathogenicity. The Alpha, Delta, and Omicron variants of SARS-CoV-2 isolated from the COVID-19 patients in Japan were propagated in VeroE6/TMPRSS2 cells.
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