کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3425901 | 1227304 | 2007 | 5 صفحه PDF | دانلود رایگان |
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.
Journal: Virology - Volume 368, Issue 2, 25 November 2007, Pages 317–321