The presentation of SARS-CoV-2 peptides by the common HLA-A∗02:01 molecule.
iScience
; 24(2): 102096, 2021 Feb 19.
Article
in English
| MEDLINE | ID: covidwho-1385756
ABSTRACT
CD8+ T cells are crucial for anti-viral immunity; however, understanding T cell responses requires the identification of epitopes presented by human leukocyte antigens (HLA). To date, few SARS-CoV-2-specific CD8+ T cell epitopes have been described. Internal viral proteins are typically more conserved than surface proteins and are often the target of CD8+ T cells. Therefore, we have characterized eight peptides derived from the internal SARS-CoV-2 nucleocapsid protein predicted to bind HLA-A∗0201, the most common HLA molecule in the global population. We determined not all peptides could form a complex with HLA-A∗0201, and the six crystal structures determined revealed that some peptides adopted a mobile conformation. We therefore provide a molecular understanding of SARS-CoV-2 CD8+ T cell epitopes. Furthermore, we show that there is limited pre-existing CD8+ T cell response toward these epitopes in unexposed individuals. Together, these data show that SARS-CoV-2 nucleocapsid might not contain potent epitopes restricted to HLA-A∗0201.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Prognostic study
Language:
English
Journal:
IScience
Year:
2021
Document Type:
Article
Affiliation country:
J.ISCI.2021.102096
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