PMID- 35432316 OWN - NLM STAT- MEDLINE DCOM- 20220419 LR - 20220703 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 13 DP - 2022 TI - Computer-Based Immunoinformatic Analysis to Predict Candidate T-Cell Epitopes for SARS-CoV-2 Vaccine Design. PG - 847617 LID - 10.3389/fimmu.2022.847617 [doi] LID - 847617 AB - Since the first outbreak of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in 2019, its high infectivity led to its prevalence around the world in an exceptionally short time. Efforts have been made to control the ongoing outbreak, and among them, vaccine developments are going on high priority. New clinical trials add to growing evidence that vaccines from many countries were highly effective at preventing SARS-CoV-2 virus infection. One of them is B cell-based vaccines, which were common during a pandemic. However, neutralizing antibody therapy becomes less effective when viruses mutate. In order to tackle the problem, we focused on T-cell immune mechanism. In this study, the mutated strains of the virus were selected globally from India (B.1.617.1 and B.1.617.2), United Kingdom (B.1.1.7), South Africa (B.1.351), and Brazil (P.1), and the overlapping peptides were collected based on mutation sites of S-protein. After that, residue scanning was used to predict the affinity between overlapping peptide and HLA-A*11:01, the most frequent human leukocyte antigen (HLA) allele among the Chinese population. Then, the binding free energy was evaluated with molecular docking to further verify the affinity changes after the mutations happen in the virus genomes. The affinity test results of three epitopes on spike protein from experimental validation were consistent with our predicted results, thereby supporting the inclusion of the epitope (374)FSTFKCYGL(382) in future vaccine design and providing a useful reference route to improve vaccine development. CI - Copyright (c) 2022 Mei, Gu, Shen, Lin and Li. FAU - Mei, Xueyin AU - Mei X AD - Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, School of Life Science and Technology, Southeast University, Nanjing, China. FAU - Gu, Pan AU - Gu P AD - Department of Math and Computer Sciences, College of Letters and Science, University of Wisconsin-Madison, Madison, WI, United States. FAU - Shen, Chuanlai AU - Shen C AD - Department of Microbiology and Immunology, Medical School of Southeast University, Nanjing, China. FAU - Lin, Xue AU - Lin X AD - Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, China. FAU - Li, Jian AU - Li J AD - Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, School of Life Science and Technology, Southeast University, Nanjing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220330 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (COVID-19 Vaccines) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (Spike Glycoprotein, Coronavirus) RN - 0 (Vaccines) RN - 0 (spike protein, SARS-CoV-2) RN - SARS-CoV-2 variants SB - IM MH - *COVID-19/prevention & control MH - COVID-19 Vaccines MH - Computers MH - Epitopes, T-Lymphocyte MH - Humans MH - Molecular Docking Simulation MH - SARS-CoV-2 MH - Spike Glycoprotein, Coronavirus MH - *Vaccines PMC - PMC9006954 OTO - NOTNLM OT - S protein OT - SARS-CoV-2 OT - T-cell epitopes OT - molecular docking OT - vaccine COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/04/19 06:00 MHDA- 2022/04/20 06:00 PMCR- 2022/03/30 CRDT- 2022/04/18 06:34 PHST- 2022/01/03 00:00 [received] PHST- 2022/02/28 00:00 [accepted] PHST- 2022/04/18 06:34 [entrez] PHST- 2022/04/19 06:00 [pubmed] PHST- 2022/04/20 06:00 [medline] PHST- 2022/03/30 00:00 [pmc-release] AID - 10.3389/fimmu.2022.847617 [doi] PST - epublish SO - Front Immunol. 2022 Mar 30;13:847617. doi: 10.3389/fimmu.2022.847617. eCollection 2022.