| Autor: |
Lichen Jing, Xia Wu, Maxwell P. Krist, Tien-Ying Hsiang, Victoria L. Campbell, Christopher L. McClurkan, Sydney M. Favors, Lawrence A. Hemingway, Charmie Godornes, Denise Q. Tong, Stacy Selke, Angela C. LeClair, Chu-Woo Pyo, Daniel E. Geraghty, Kerry J. Laing, Anna Wald, Michael Gale Jr., David M. Koelle |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
JCI Insight, Vol 7, Iss 6 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2379-3708 |
| DOI: |
10.1172/jci.insight.158126 |
| Popis: |
SARS-CoV-2 provokes a robust T cell response. Peptide-based studies exclude antigen processing and presentation biology, which may influence T cell detection studies. To focus on responses to whole virus and complex antigens, we used intact SARS-CoV-2 and full-length proteins with DCs to activate CD8 and CD4 T cells from convalescent people. T cell receptor (TCR) sequencing showed partial repertoire preservation after expansion. Resultant CD8 T cells recognize SARS-CoV-2–infected respiratory tract cells, and CD4 T cells detect inactivated whole viral antigen. Specificity scans with proteome-covering protein/peptide arrays show that CD8 T cells are oligospecific per subject and that CD4 T cell breadth is higher. Some CD4 T cell lines enriched using SARS-CoV-2 cross-recognize whole seasonal coronavirus (sCoV) antigens, with protein, peptide, and HLA restriction validation. Conversely, recognition of some epitopes is eliminated for SARS-CoV-2 variants, including spike (S) epitopes in the Alpha, Beta, Gamma, and Delta variant lineages. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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