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Tarke, Alison; Coelho, Camila H.; Zhang, Zeli; Dan, Jennifer M.; Yu, Esther Dawen; Methot, Nils; Bloom, Nathaniel I.; Goodwin, Benjamin; Phillips, Elizabeth; Mallal, Simon; Sidney, John; Filaci, Gilberto; Weiskopf, Daniela; da Silva Antunes, Ricardo; Crotty, Shane; Grifoni, Alba; Sette, Alessandro
Cell, 03/2022, Letnik: 185, Številka: 5Journal Article
We address whether T cell responses induced by different vaccine platforms (mRNA-1273, BNT162b2, Ad26.COV2.S, and NVX-CoV2373) cross-recognize early SARS-CoV-2 variants. T cell responses to early variants were preserved across vaccine platforms. By contrast, significant overall decreases were observed for memory B cells and neutralizing antibodies. In subjects ∼6 months post-vaccination, 90% (CD4+) and 87% (CD8+) of memory T cell responses were preserved against variants on average by AIM assay, and 84% (CD4+) and 85% (CD8+) preserved against Omicron. Omicron RBD memory B cell recognition was substantially reduced to 42% compared with other variants. T cell epitope repertoire analysis revealed a median of 11 and 10 spike epitopes recognized by CD4+ and CD8+ T cells, with average preservation > 80% for Omicron. Functional preservation of the majority of T cell responses may play an important role as a second-level defense against diverse variants. Display omitted •T cells of vaccinees recognize SARS-CoV-2 variants, including Omicron•RBD memory B cells’ recognition of Omicron is reduced•A median of 11 CD4 and 10 CD8 spike epitopes are recognized in vaccinees•Average preservation > 80% for Omicron at the epitope level Human memory T cells induced by SARS-CoV-2 vaccines maintain the ability to recognize viral variants, including the Omicron variant.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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