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Deprecated: Implicit conversion from float 269.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell 2020 ; 181 (7): 1489-1501.e15 Nephropedia Template TP
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Targets of T Cell Responses to SARS-CoV-2 Coronavirus in Humans with COVID-19 Disease and Unexposed Individuals #MMPMID32473127
Grifoni A; Weiskopf D; Ramirez SI; Mateus J; Dan JM; Moderbacher CR; Rawlings SA; Sutherland A; Premkumar L; Jadi RS; Marrama D; de Silva AM; Frazier A; Carlin AF; Greenbaum JA; Peters B; Krammer F; Smith DM; Crotty S; Sette A
Cell 2020[Jun]; 181 (7): 1489-1501.e15 PMID32473127show ga
Understanding adaptive immunity to SARS-CoV-2 is important for vaccine development, interpreting coronavirus disease 2019 (COVID-19) pathogenesis, and calibration of pandemic control measures. Using HLA class I and II predicted peptide "megapools," circulating SARS-CoV-2-specific CD8(+) and CD4(+) T cells were identified in approximately 70% and 100% of COVID-19 convalescent patients, respectively. CD4(+) T cell responses to spike, the main target of most vaccine efforts, were robust and correlated with the magnitude of the anti-SARS-CoV-2 IgG and IgA titers. The M, spike, and N proteins each accounted for 11%-27% of the total CD4(+) response, with additional responses commonly targeting nsp3, nsp4, ORF3a, and ORF8, among others. For CD8(+) T cells, spike and M were recognized, with at least eight SARS-CoV-2 ORFs targeted. Importantly, we detected SARS-CoV-2-reactive CD4(+) T cells in approximately 40%-60% of unexposed individuals, suggesting cross-reactive T cell recognition between circulating "common cold" coronaviruses and SARS-CoV-2.