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10.1073/pnas.2101161118

http://scihub22266oqcxt.onion/10.1073/pnas.2101161118
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34045361!8214666!34045361
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suck abstract from ncbi


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pmid34045361      Proc+Natl+Acad+Sci+U+S+A 2021 ; 118 (24): ä
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  • Translational shutdown and evasion of the innate immune response by SARS-CoV-2 NSP14 protein #MMPMID34045361
  • Hsu JC; Laurent-Rolle M; Pawlak JB; Wilen CB; Cresswell P
  • Proc Natl Acad Sci U S A 2021[Jun]; 118 (24): ä PMID34045361show ga
  • The ongoing COVID-19 pandemic has caused an unprecedented global health crisis. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of COVID-19. Subversion of host protein synthesis is a common strategy that pathogenic viruses use to replicate and propagate in their host. In this study, we show that SARS-CoV-2 is able to shut down host protein synthesis and that SARS-CoV-2 nonstructural protein NSP14 exerts this activity. We show that the translation inhibition activity of NSP14 is conserved in human coronaviruses. NSP14 is required for virus replication through contribution of its exoribonuclease (ExoN) and N7-methyltransferase (N7-MTase) activities. Mutations in the ExoN or N7-MTase active sites of SARS-CoV-2 NSP14 abolish its translation inhibition activity. In addition, we show that the formation of NSP14-NSP10 complex enhances translation inhibition executed by NSP14. Consequently, the translational shutdown by NSP14 abolishes the type I interferon (IFN-I)-dependent induction of interferon-stimulated genes (ISGs). Together, we find that SARS-CoV-2 shuts down host innate immune responses via a translation inhibitor, providing insights into the pathogenesis of SARS-CoV-2.
  • |*Immune Evasion[MESH]
  • |*Immunity, Innate[MESH]
  • |Animals[MESH]
  • |COVID-19/*immunology[MESH]
  • |Chlorocebus aethiops[MESH]
  • |Exoribonucleases/*immunology[MESH]
  • |Humans[MESH]
  • |Protein Biosynthesis/*immunology[MESH]
  • |SARS-CoV-2/*immunology[MESH]
  • |Vero Cells[MESH]


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