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10.4049/jimmunol.2100684

http://scihub22266oqcxt.onion/10.4049/jimmunol.2100684
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34996837!ä!34996837

suck abstract from ncbi


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pmid34996837      J+Immunol 2022 ; 208 (3): 753-761
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  • SARS-CoV-2 NSP13 Inhibits Type I IFN Production by Degradation of TBK1 via p62-Dependent Selective Autophagy #MMPMID34996837
  • Sui C; Xiao T; Zhang S; Zeng H; Zheng Y; Liu B; Xu G; Gao C; Zhang Z
  • J Immunol 2022[Feb]; 208 (3): 753-761 PMID34996837show ga
  • Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19), has seriously threatened global public health. Severe COVID-19 has been reported to be associated with an impaired IFN response. However, the mechanisms of how SARS-CoV-2 antagonizes the host IFN response are poorly understood. In this study, we report that SARS-CoV-2 helicase NSP13 inhibits type I IFN production by directly targeting TANK-binding kinase 1 (TBK1) for degradation. Interestingly, inhibition of autophagy by genetic knockout of Beclin1 or pharmacological inhibition can rescue NSP13-mediated TBK1 degradation in HEK-293T cells. Subsequent studies revealed that NSP13 recruits TBK1 to p62, and the absence of p62 can also inhibit TBK1 degradation in HEK-293T and HeLa cells. Finally, TBK1 and p62 degradation and p62 aggregation were observed during SARS-CoV-2 infection in HeLa-ACE2 and Calu3 cells. Overall, our study shows that NSP13 inhibits type I IFN production by recruiting TBK1 to p62 for autophagic degradation, enabling it to evade the host innate immune response, which provides new insights into the transmission and pathogenesis of SARS-CoV-2 infection.
  • |*Autophagy[MESH]
  • |Beclin-1/antagonists & inhibitors[MESH]
  • |COVID-19/*immunology[MESH]
  • |Cell Line[MESH]
  • |Coronavirus RNA-Dependent RNA Polymerase/*physiology[MESH]
  • |Down-Regulation[MESH]
  • |Humans[MESH]
  • |Immune Evasion[MESH]
  • |Immunity, Innate[MESH]
  • |Immunoprecipitation[MESH]
  • |Interferon Type I/*biosynthesis/genetics[MESH]
  • |Methyltransferases/*physiology[MESH]
  • |Multiprotein Complexes[MESH]
  • |Protein Aggregates[MESH]
  • |Protein Interaction Mapping[MESH]
  • |Protein Serine-Threonine Kinases/*metabolism[MESH]
  • |RNA Helicases/*physiology[MESH]
  • |SARS-CoV-2/*physiology[MESH]
  • |Sequestosome-1 Protein/*metabolism[MESH]


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