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10.1371/journal.ppat.1009761

http://scihub22266oqcxt.onion/10.1371/journal.ppat.1009761
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34270631!8318272!34270631
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suck abstract from ncbi


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pmid34270631      PLoS+Pathog 2021 ; 17 (7): e1009761
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  • SARS-CoV-2-specific circulating T follicular helper cells correlate with neutralizing antibodies and increase during early convalescence #MMPMID34270631
  • Boppana S; Qin K; Files JK; Russell RM; Stoltz R; Bibollet-Ruche F; Bansal A; Erdmann N; Hahn BH; Goepfert PA
  • PLoS Pathog 2021[Jul]; 17 (7): e1009761 PMID34270631show ga
  • T-cell immunity is likely to play a role in protection against SARS-CoV-2 by helping generate neutralizing antibodies. We longitudinally studied CD4 T-cell responses to the M, N, and S structural proteins of SARS-CoV-2 in 26 convalescent individuals. Within the first two months following symptom onset, a majority of individuals (81%) mounted at least one CD4 T-cell response, and 48% of individuals mounted detectable SARS-CoV-2-specific circulating T follicular helper cells (cTfh, defined as CXCR5+PD1+ CD4 T cells). SARS-CoV-2-specific cTfh responses across all three protein specificities correlated with antibody neutralization with the strongest correlation observed for S protein-specific responses. When examined over time, cTfh responses, particularly to the M protein, increased in convalescence, and robust cTfh responses with magnitudes greater than 5% were detected at the second convalescent visit, a median of 38 days post-symptom onset. CD4 T-cell responses declined but persisted at low magnitudes three months and six months after symptom onset. These data deepen our understanding of antigen-specific cTfh responses in SARS-CoV-2 infection, suggesting that in addition to S protein, M and N protein-specific cTfh may also assist in the development of neutralizing antibodies and that cTfh response formation may be delayed in SARS-CoV-2 infection.
  • |Adult[MESH]
  • |Aged[MESH]
  • |Antibodies, Neutralizing/*blood[MESH]
  • |Antibodies, Viral/*blood[MESH]
  • |Antibody Specificity[MESH]
  • |COVID-19/*immunology/*virology[MESH]
  • |Case-Control Studies[MESH]
  • |Coronavirus Nucleocapsid Proteins/immunology[MESH]
  • |Female[MESH]
  • |Host Microbial Interactions/immunology[MESH]
  • |Humans[MESH]
  • |Longitudinal Studies[MESH]
  • |Male[MESH]
  • |Middle Aged[MESH]
  • |Pandemics[MESH]
  • |Phosphoproteins/immunology[MESH]
  • |SARS-CoV-2/*immunology[MESH]
  • |Spike Glycoprotein, Coronavirus/immunology[MESH]
  • |T Follicular Helper Cells/*immunology/*virology[MESH]
  • |Time Factors[MESH]
  • |Viral Matrix Proteins/immunology[MESH]


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