Construction and efficacy testing of DNA vaccines containing HLA-A*02:01-restricted SARS-CoV-2 T-cell epitopes predicted by immunoinformatics.

Autor: Tan D; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Kang N; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Zhu Y; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Hou J; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Wang H; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Xu H; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Zu C; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Gao Z; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Liu M; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Liu N; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Deng Q; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Lu H; Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China.; National Clinical Research Centre for Infectious Diseases, the Third People's Hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, China., Liu J; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China., Xie Y; Key Laboratory of Medical Molecular Virology (NHC & MOE & CAMS), Shanghai Institute of Infectious Diseases and Biosecurity, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Shanghai 200031, China.; Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China.
Jazyk: angličtina
Zdroj: Acta biochimica et biophysica Sinica [Acta Biochim Biophys Sin (Shanghai)] 2024 Apr 24; Vol. 56 (7), pp. 986-996.
DOI: 10.3724/abbs.2024039
Abstrakt: Vaccines play essential roles in the fight against the COVID-19 pandemic. The development and assessment of COVID-19 vaccines have generally focused on the induction and boosting of neutralizing antibodies targeting the SARS-CoV-2 spike (S) protein. Due to rapid and continuous variation in the S protein, such vaccines need to be regularly updated to match newly emerged dominant variants. T-cell vaccines that target MHC I- or II-restricted epitopes in both structural and non-structural viral proteins have the potential to induce broadly cross-protective and long-lasting responses. In this work, the entire proteome encoded by SARS-CoV-2 (Wuhan-hu-1) is subjected to immunoinformatics-based prediction of HLA-A*02:01-restricted epitopes. The immunogenicity of the predicted epitopes is evaluated using peripheral blood mononuclear cells from convalescent Wuhan-hu-1-infected patients. Furthermore, predicted epitopes that are conserved across major SARS-CoV-2 lineages and variants are used to construct DNA vaccines expressing multi-epitope polypeptides. Most importantly, two DNA vaccine constructs induce epitope-specific CD8 + T-cell responses in a mouse model of HLA-A*02:01 restriction and protect immunized mice from challenge with Wuhan-hu-1 virus after hACE2 transduction. These data provide candidate T-cell epitopes useful for the development of T-cell vaccines against SARS-CoV-2 and demonstrate a strategy for quick T-cell vaccine candidate development applicable to other emerging pathogens.
Databáze: MEDLINE
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