Structural basis for recognition of two HLA-A2-restricted SARS-CoV-2 spike epitopes by public and private T cell receptors
Structural basis for recognition of two HLA-A2-restricted SARS-CoV-2 spike epitopes by public and private T cell receptors
Abstract T cells play a vital role in combatting SARS-CoV-2 and in forming long-term memory responses. Whereas extensive structural information is available on neutralizing antibodies against SARS-CoV-2, such information on SARS-CoV-2-specific T cell receptors (TCRs) bound to their peptide–MHC targets is lacking. We determined structures of a public and a private TCR from COVID-19 convalescent patients in complex with HLA-A2 and two SARS-CoV-2 spike protein epitopes (YLQ and RLQ). The structures revealed the basis for selection of particular TRAV and TRBV germline genes by the public but not the private TCR, and for the ability of both TCRs to recognize natural variants of YLQ and RLQ but not homologous epitopes from human seasonal coronaviruses. By elucidating the mechanism for TCR recognition of an immunodominant yet variable epitope (YLQ) and a conserved but less commonly targeted epitope (RLQ), this study can inform prospective efforts to design vaccines to elicit pan-coronavirus immunity.
Efimov Grigory A.、Kolesnikov Alexander、Shmelev Anton、Serdyuk Yana、Gowthaman Ragul、Yin Rui、Guest Johnathan D.、Mariuzza Roy A.、Pierce Brian G.、Wu Daichao
National Research Center for HematologyW.M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research||Department of Cell Biology and Molecular Genetics, University of MarylandNational Research Center for HematologyNational Research Center for HematologyW.M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research||Department of Cell Biology and Molecular Genetics, University of MarylandW.M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research||Department of Cell Biology and Molecular Genetics, University of MarylandW.M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research||Department of Cell Biology and Molecular Genetics, University of MarylandW.M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research||Department of Cell Biology and Molecular Genetics, University of MarylandW.M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research||Department of Cell Biology and Molecular Genetics, University of MarylandW.M. Keck Laboratory for Structural Biology, University of Maryland Institute for Bioscience and Biotechnology Research||Department of Histology and Embryology, Hengyang Medical College, University of South China||Department of Cell Biology and Molecular Genetics, University of Maryland
基础医学分子生物学
Efimov Grigory A.,Kolesnikov Alexander,Shmelev Anton,Serdyuk Yana,Gowthaman Ragul,Yin Rui,Guest Johnathan D.,Mariuzza Roy A.,Pierce Brian G.,Wu Daichao.Structural basis for recognition of two HLA-A2-restricted SARS-CoV-2 spike epitopes by public and private T cell receptors[EB/OL].(2025-03-28)[2025-04-29].https://www.biorxiv.org/content/10.1101/2021.07.28.454232.点此复制
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