PMID- 37705735 OWN - NLM STAT- MEDLINE DCOM- 20230915 LR - 20230919 IS - 1449-2288 (Electronic) IS - 1449-2288 (Linking) VI - 19 IP - 13 DP - 2023 TI - Seeing the T cell Immunity of SARS-CoV-2 and SARS-CoV: Believing the Epitope-Oriented Vaccines. PG - 4052-4060 LID - 10.7150/ijbs.80468 [doi] AB - The emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) at the end of 2019 stimulated vigorous research efforts in immunology and vaccinology. In addition to innate immune responses, both virus-specific humoral and cellular immune responses are of importance for viral clearance. T cell epitopes play a central role in T cell-based immune responses. Herein, we summarized the peptide/major histocompatibility complex (pMHC) structures of the SARS-CoV-2-derived T cell epitopes available in the Protein Data Bank (PDB) and proposed the challenge and opportunities for using of T cell epitopes in future vaccine development efforts. A total of 27 SARS-CoV-2 related pMHC structures and five complexes with T cell receptors were retrieved. The peptides are mainly distributed on spike (S), nucleocapsid (N), and ORF1ab proteins. Most peptides are conserved among variants of concerns (VOCs) for SARS-CoV-2, except for several mutated peptides located in the S protein. The structures of human leukocyte antigen (HLA) complexed with seven epitopes derived from SARS-CoV were also retrieved, which showed a potential cross T cell immunity with SARS-CoV-2. Structural studies of antigenic peptides from SARS-CoV-2 and SARS-CoV help to visualize the processes and the mechanisms of cross T cell immunity. T cell epitope-oriented vaccines are potential next-generation vaccines for SARS-CoV-2, which are worthy of further investigation. CI - (c) The author(s). FAU - Yue, Can AU - Yue C AD - CAS Key Laboratory of Infection and Immunity, National Laboratory of Macromolecules, Institute of Biophysics, Chinese Academy of Sciences (CAS), Beijing, China. FAU - Wang, Pengyan AU - Wang P AD - Department of Pathogen Biology & Microbiology, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China. FAU - Tian, Jinmin AU - Tian J AD - NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Beijing, China. AD - School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China. FAU - Gao, George F AU - Gao GF AD - NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Beijing, China. AD - CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China. FAU - Liu, Kefang AU - Liu K AD - CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China. AD - Shenzhen Children's Hospital, Shenzhen, Guangdong, China. FAU - Liu, William J AU - Liu WJ AD - NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Beijing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20230806 PL - Australia TA - Int J Biol Sci JT - International journal of biological sciences JID - 101235568 RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (COVID-19 Vaccines) SB - IM MH - Humans MH - *T-Lymphocytes MH - Epitopes, T-Lymphocyte MH - SARS-CoV-2 MH - COVID-19 Vaccines MH - *COVID-19/prevention & control PMC - PMC10496500 OTO - NOTNLM OT - COVID-19 OT - Epitope OT - SARS-CoV-2 OT - Sarbecoviruses OT - TCR OT - Vaccine OT - pMHC COIS- Competing Interests: The authors have declared that no competing interest exists. EDAT- 2023/09/14 06:42 MHDA- 2023/09/15 06:42 PMCR- 2023/01/01 CRDT- 2023/09/14 04:06 PHST- 2022/11/03 00:00 [received] PHST- 2023/07/07 00:00 [accepted] PHST- 2023/09/15 06:42 [medline] PHST- 2023/09/14 06:42 [pubmed] PHST- 2023/09/14 04:06 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - ijbsv19p4052 [pii] AID - 10.7150/ijbs.80468 [doi] PST - epublish SO - Int J Biol Sci. 2023 Aug 6;19(13):4052-4060. doi: 10.7150/ijbs.80468. eCollection 2023.