Author: Libraty, Daniel H.; O'Neil, Kimberly M.; Baker, Lauren M.; Acosta, Luz P.; Olveda, Remigio M.
Title: Human CD4+ memory T-lymphocyte responses to SARS coronavirus infection Cord-id: 1vehi4w4 Document date: 2007_11_25
ID: 1vehi4w4
Snippet: Abstract Little is known about CD4+ T-cell immunity to the severe acute respiratory syndrome (SARS) coronavirus. In two SARS patients, we examined the memory CD4+ T-cell responses to peptides derived from SARS coronavirus structural proteins. We generated CD4+ T-cell lines to 3 peptides from the spike (S) protein and defined their HLA restriction. In one patient, the predominant memory CD4+ T-cell response was directed against an epitope outside the S protein receptor-binding domain. In both pat
Document: Abstract Little is known about CD4+ T-cell immunity to the severe acute respiratory syndrome (SARS) coronavirus. In two SARS patients, we examined the memory CD4+ T-cell responses to peptides derived from SARS coronavirus structural proteins. We generated CD4+ T-cell lines to 3 peptides from the spike (S) protein and defined their HLA restriction. In one patient, the predominant memory CD4+ T-cell response was directed against an epitope outside the S protein receptor-binding domain. In both patients, the frequency of CD4+ memory T-cells to virus structural proteins and anti-SARS coronavirus IgG levels were low by 12 months after infection. This report expands our understanding of the specificity and duration of anti-SARS coronavirus CD4+ T-cell immune responses.
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