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10.1038/s41392-020-00334-0

http://scihub22266oqcxt.onion/10.1038/s41392-020-00334-0
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suck abstract from ncbi


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pmid33037188      Signal+Transduct+Target+Ther 2020 ; 5 (1): 235
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  • SARS-CoV-2 triggers inflammatory responses and cell death through caspase-8 activation #MMPMID33037188
  • Li S; Zhang Y; Guan Z; Li H; Ye M; Chen X; Shen J; Zhou Y; Shi ZL; Zhou P; Peng K
  • Signal Transduct Target Ther 2020[Oct]; 5 (1): 235 PMID33037188show ga
  • Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection can lead to respiratory illness and multi-organ failure in critically ill patients. Although the virus-induced lung damage and inflammatory cytokine storm are believed to be directly associated with coronavirus disease 2019 (COVID-19) clinical manifestations, the underlying mechanisms of virus-triggered inflammatory responses are currently unknown. Here we report that SARS-CoV-2 infection activates caspase-8 to trigger cell apoptosis and inflammatory cytokine processing in the lung epithelial cells. The processed inflammatory cytokines are released through the virus-induced necroptosis pathway. Virus-induced apoptosis, necroptosis, and inflammation activation were also observed in the lung sections of SARS-CoV-2-infected HFH4-hACE2 transgenic mouse model, a valid model for studying SARS-CoV-2 pathogenesis. Furthermore, analysis of the postmortem lung sections of fatal COVID-19 patients revealed not only apoptosis and necroptosis but also massive inflammatory cell infiltration, necrotic cell debris, and pulmonary interstitial fibrosis, typical of immune pathogenesis in the lung. The SARS-CoV-2 infection triggered a dual mode of cell death pathways and caspase-8-dependent inflammatory responses may lead to the lung damage in the COVID-19 patients. These discoveries might assist the development of therapeutic strategies to treat COVID-19.
  • |Animals[MESH]
  • |Apoptosis/*immunology[MESH]
  • |Betacoronavirus/*pathogenicity[MESH]
  • |COVID-19[MESH]
  • |Caspase 8/genetics/*immunology[MESH]
  • |Cell Line, Tumor[MESH]
  • |Chemokine CCL5/genetics/immunology[MESH]
  • |Chemokine CXCL10/genetics/immunology[MESH]
  • |Coronavirus Infections/genetics/*immunology/pathology/virology[MESH]
  • |Cytokine Release Syndrome/genetics/*immunology/pathology/virology[MESH]
  • |Disease Models, Animal[MESH]
  • |Epithelial Cells/immunology/pathology/virology[MESH]
  • |Gene Expression Regulation[MESH]
  • |Humans[MESH]
  • |Interleukin-1beta/genetics/immunology[MESH]
  • |Interleukin-7/genetics/immunology[MESH]
  • |Interleukin-8/genetics/immunology[MESH]
  • |Lung/immunology/pathology/virology[MESH]
  • |Mice[MESH]
  • |Mice, Transgenic[MESH]
  • |Necroptosis/*immunology[MESH]
  • |Pandemics[MESH]
  • |Pneumonia, Viral/genetics/*immunology/pathology/virology[MESH]
  • |Pulmonary Fibrosis/genetics/*immunology/pathology/virology[MESH]
  • |SARS-CoV-2[MESH]


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