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10.4049/jimmunol.2100606

http://scihub22266oqcxt.onion/10.4049/jimmunol.2100606
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34607939!ä!34607939

suck abstract from ncbi


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pmid34607939      J+Immunol 2021 ; 207 (10): 2581-2588
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  • SARS-CoV-2-Reactive Mucosal B Cells in the Upper Respiratory Tract of Uninfected Individuals #MMPMID34607939
  • Liu Y; Budylowski P; Dong S; Li Z; Goroshko S; Leung LYT; Grunebaum E; Campisi P; Propst EJ; Wolter NE; Rini JM; Zia A; Ostrowski M; Ehrhardt GRA
  • J Immunol 2021[Nov]; 207 (10): 2581-2588 PMID34607939show ga
  • SARS-CoV-2 is a respiratory pathogen that can cause severe disease in at-risk populations but results in asymptomatic infections or a mild course of disease in the majority of cases. We report the identification of SARS-CoV-2-reactive B cells in human tonsillar tissue obtained from children who were negative for coronavirus disease 2019 prior to the pandemic and the generation of mAbs recognizing the SARS-CoV-2 Spike protein from these B cells. These Abs showed reduced binding to Spike proteins of SARS-CoV-2 variants and did not recognize Spike proteins of endemic coronaviruses, but subsets reacted with commensal microbiota and exhibited SARS-CoV-2-neutralizing potential. Our study demonstrates pre-existing SARS-CoV-2-reactive Abs in various B cell populations in the upper respiratory tract lymphoid tissue that may lead to the rapid engagement of the pathogen and contribute to prevent manifestations of symptomatic or severe disease.
  • |Adenoids/*immunology[MESH]
  • |Antibodies, Viral/metabolism[MESH]
  • |B-Lymphocyte Subsets/*immunology[MESH]
  • |B-Lymphocytes/*immunology[MESH]
  • |COVID-19/*immunology[MESH]
  • |Child[MESH]
  • |HEK293 Cells[MESH]
  • |Humans[MESH]
  • |Immunologic Memory[MESH]
  • |Lymphocyte Activation[MESH]
  • |Mucous Membrane/*immunology[MESH]
  • |Receptors, Antigen, B-Cell/*genetics[MESH]
  • |Respiratory System/*immunology[MESH]
  • |SARS-CoV-2/*physiology[MESH]
  • |Single-Cell Analysis[MESH]
  • |Spike Glycoprotein, Coronavirus/immunology[MESH]


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