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10.1080/22221751.2021.1925594

http://scihub22266oqcxt.onion/10.1080/22221751.2021.1925594
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33944697!8183521!33944697
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suck abstract from ncbi


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pmid33944697      Emerg+Microbes+Infect 2021 ; 10 (1): 1097-1111
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  • Germline IGHV3-53-encoded RBD-targeting neutralizing antibodies are commonly present in the antibody repertoires of COVID-19 patients #MMPMID33944697
  • Yan Q; He P; Huang X; Luo K; Zhang Y; Yi H; Wang Q; Li F; Hou R; Fan X; Li P; Liu X; Liang H; Deng Y; Chen Z; Chen Y; Mo X; Feng L; Xiong X; Li S; Han J; Qu L; Niu X; Chen L
  • Emerg Microbes Infect 2021[Dec]; 10 (1): 1097-1111 PMID33944697show ga
  • Monoclonal antibodies (mAbs) encoded by IGHV3-53 (VH3-53) targeting the spike receptor-binding domain (RBD) have been isolated from different COVID-19 patients. However, the existence and prevalence of shared VH3-53-encoded antibodies in the antibody repertoires is not clear. Using antibody repertoire sequencing, we found that the usage of VH3-53 increased after SARS-CoV-2 infection. A highly shared VH3-53-J6 clonotype was identified in 9 out of 13 COVID-19 patients. This clonotype was derived from convergent gene rearrangements with few somatic hypermutations and was evolutionary conserved. We synthesized 34 repertoire-deduced novel VH3-53-J6 heavy chains and paired with a common IGKV1-9 light chain to produce recombinant mAbs. Most of these recombinant mAbs (23/34) possess RBD binding and virus-neutralizing activities, and recognize ACE2 binding site via the same molecular interface. Our computational analysis, validated by laboratory experiments, revealed that VH3-53 antibodies targeting RBD are commonly present in COVID-19 patients' antibody repertoires, indicating many people have germline-like precursor sequences to rapidly generate SARS-CoV-2 neutralizing antibodies. Moreover, antigen-specific mAbs can be digitally obtained through antibody repertoire sequencing and computational analysis.
  • |Adult[MESH]
  • |Aged[MESH]
  • |Aged, 80 and over[MESH]
  • |Antibodies, Monoclonal/*blood/immunology[MESH]
  • |Antibodies, Neutralizing/*blood[MESH]
  • |Antibodies, Viral/*blood[MESH]
  • |Base Sequence[MESH]
  • |COVID-19/blood/*immunology[MESH]
  • |Case-Control Studies[MESH]
  • |Epitopes, B-Lymphocyte[MESH]
  • |Female[MESH]
  • |HEK293 Cells[MESH]
  • |Humans[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]
  • |Models, Molecular[MESH]
  • |Phylogeny[MESH]
  • |Protein Conformation[MESH]
  • |Receptors, Antigen, B-Cell/genetics[MESH]


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