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10.1038/s41418-020-00633-7 http://scihub22266oqcxt.onion/10.1038/s41418-020-00633-7 33037393!7545020!33037393     free     free     free       Cell+Death+Differ 2020 ; 27 (12): 3209-3225 Nephropedia Template TP {{tp|p=33037393|t=2020. An aberrant STAT pathway is central to COVID-19 |pdf=|usr=}}{{33037393}} gab.com Text An aberrant STAT pathway is central to COVID-19 JO: Cell Death Differ http://www.kidney.de/pget.php?&tw=1&pmid=33037393 #FOAvip COVID-19 is caused by SARS-CoV-2 infection and characterized by diverse clinical symptoms. Type I interferon (IFN-I) production is impaired and severe cases lead to ARDS and widespread coagulopathy. We propose that COVID-19 pathophysiology is initiated by SARS-CoV-2 gene products, the NSP1 and ORF6 proteins, leading to a catastrophic cascade of failures. These viral components induce signal transducer and activator of transcription 1 (STAT1) dysfunction and compensatory hyperactivation of STAT3. In SARS-CoV-2-infected cells, a positive feedback loop established between STAT3 and plasminogen activator inhibitor-1 (PAI-1) may lead to an escalating cycle of activation in common with the interdependent signaling networks affected in COVID-19. Specifically, PAI-1 upregulation leads to coagulopathy characterized by intravascular thrombi. Overproduced PAI-1 binds to TLR4 on macrophages, inducing the secretion of proinflammatory cytokines and chemokines. The recruitment and subsequent activation of innate immune cells within an infected lung drives the destruction of lung architecture, which leads to the infection of regional endothelial cells and produces a hypoxic environment that further stimulates PAI-1 production. Acute lung injury also activates EGFR and leads to the phosphorylation of STAT3. COVID-19 patients' autopsies frequently exhibit diffuse alveolar damage (DAD) and increased hyaluronan (HA) production which also leads to higher levels of PAI-1. COVID-19 risk factors are consistent with this scenario, as PAI-1 levels are increased in hypertension, obesity, diabetes, cardiovascular diseases, and old age. We discuss the possibility of using various approved drugs, or drugs currently in clinical development, to treat COVID-19. This perspective suggests to enhance STAT1 activity and/or inhibit STAT3 functions for COVID-19 treatment. This might derail the escalating STAT3/PAI-1 cycle central to COVID-19. Twit Text FOAVip An aberrant STAT pathway is central to COVID-19 ????Cell Death Differ http://www.kidney.de/pget.php?&tw=1&pmid=33037393 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=33037393 #FOAvip English Wikipedia <ref>{{Cite pmid|33037393}}</ref> An aberrant STAT pathway is central to COVID-19 #MMPMID33037393 Matsuyama T; Kubli SP; Yoshinaga SK; Pfeffer K; Mak TW Cell Death Differ 2020[Dec]; 27 (12): 3209-3225 PMID33037393show ga COVID-19 is caused by SARS-CoV-2 infection and characterized by diverse clinical symptoms. Type I interferon (IFN-I) production is impaired and severe cases lead to ARDS and widespread coagulopathy. We propose that COVID-19 pathophysiology is initiated by SARS-CoV-2 gene products, the NSP1 and ORF6 proteins, leading to a catastrophic cascade of failures. These viral components induce signal transducer and activator of transcription 1 (STAT1) dysfunction and compensatory hyperactivation of STAT3. In SARS-CoV-2-infected cells, a positive feedback loop established between STAT3 and plasminogen activator inhibitor-1 (PAI-1) may lead to an escalating cycle of activation in common with the interdependent signaling networks affected in COVID-19. Specifically, PAI-1 upregulation leads to coagulopathy characterized by intravascular thrombi. Overproduced PAI-1 binds to TLR4 on macrophages, inducing the secretion of proinflammatory cytokines and chemokines. The recruitment and subsequent activation of innate immune cells within an infected lung drives the destruction of lung architecture, which leads to the infection of regional endothelial cells and produces a hypoxic environment that further stimulates PAI-1 production. Acute lung injury also activates EGFR and leads to the phosphorylation of STAT3. COVID-19 patients' autopsies frequently exhibit diffuse alveolar damage (DAD) and increased hyaluronan (HA) production which also leads to higher levels of PAI-1. COVID-19 risk factors are consistent with this scenario, as PAI-1 levels are increased in hypertension, obesity, diabetes, cardiovascular diseases, and old age. We discuss the possibility of using various approved drugs, or drugs currently in clinical development, to treat COVID-19. This perspective suggests to enhance STAT1 activity and/or inhibit STAT3 functions for COVID-19 treatment. This might derail the escalating STAT3/PAI-1 cycle central to COVID-19. |COVID-19/metabolism/*pathology/virology[MESH] |Chemokines/metabolism[MESH] |Cytokines/metabolism[MESH] |ErbB Receptors/metabolism[MESH] |Humans[MESH] |Interferon Type I/metabolism[MESH] |SARS-CoV-2/isolation & purification/metabolism[MESH] |STAT Transcription Factors/chemistry/*metabolism[MESH] |Signal Transduction/*physiology[MESH]An aberrant STAT pathway is central to COVID-19 (epmc).pdf DeepDyve Pubget Overpricing