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10.1038/s41467-021-22210-3

http://scihub22266oqcxt.onion/10.1038/s41467-021-22210-3
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33785765!8010106!33785765
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suck abstract from ncbi


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pmid33785765      Nat+Commun 2021 ; 12 (1): 1961
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  • SARS-CoV-2 in severe COVID-19 induces a TGF-beta-dominated chronic immune response that does not target itself #MMPMID33785765
  • Ferreira-Gomes M; Kruglov A; Durek P; Heinrich F; Tizian C; Heinz GA; Pascual-Reguant A; Du W; Mothes R; Fan C; Frischbutter S; Habenicht K; Budzinski L; Ninnemann J; Jani PK; Guerra GM; Lehmann K; Matz M; Ostendorf L; Heiberger L; Chang HD; Bauherr S; Maurer M; Schonrich G; Raftery M; Kallinich T; Mall MA; Angermair S; Treskatsch S; Dorner T; Corman VM; Diefenbach A; Volk HD; Elezkurtaj S; Winkler TH; Dong J; Hauser AE; Radbruch H; Witkowski M; Melchers F; Radbruch A; Mashreghi MF
  • Nat Commun 2021[Mar]; 12 (1): 1961 PMID33785765show ga
  • The pathogenesis of severe COVID-19 reflects an inefficient immune reaction to SARS-CoV-2. Here we analyze, at the single cell level, plasmablasts egressed into the blood to study the dynamics of adaptive immune response in COVID-19 patients requiring intensive care. Before seroconversion in response to SARS-CoV-2 spike protein, peripheral plasmablasts display a type 1 interferon-induced gene expression signature; however, following seroconversion, plasmablasts lose this signature, express instead gene signatures induced by IL-21 and TGF-beta, and produce mostly IgG1 and IgA1. In the sustained immune reaction from COVID-19 patients, plasmablasts shift to the expression of IgA2, thereby reflecting an instruction by TGF-beta. Despite their continued presence in the blood, plasmablasts are not found in the lungs of deceased COVID-19 patients, nor does patient IgA2 binds to the dominant antigens of SARS-CoV-2. Our results thus suggest that, in severe COVID-19, SARS-CoV-2 triggers a chronic immune reaction that is instructed by TGF-beta, and is distracted from itself.
  • |Adult[MESH]
  • |Aged[MESH]
  • |Aged, 80 and over[MESH]
  • |Antibodies, Viral/*immunology[MESH]
  • |COVID-19/*immunology/virology[MESH]
  • |Female[MESH]
  • |Humans[MESH]
  • |Immunoglobulin A/immunology[MESH]
  • |Immunoglobulin G/immunology[MESH]
  • |Interleukins/immunology[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]
  • |Plasma Cells/immunology[MESH]
  • |SARS-CoV-2/genetics/*immunology[MESH]
  • |Spike Glycoprotein, Coronavirus/genetics/immunology[MESH]


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