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Feng L, Gao YY, Sun M, Li ZB, Zhang Q, Yang J, Qiao C, Jin H, Feng HS, Xian YH, Qi J, Gao GF, Liu WJ, Gao FS. The Parallel Presentation of Two Functional CTL Epitopes Derived from the O and Asia 1 Serotypes of Foot-and-Mouth Disease Virus and Swine SLA-2*HB01: Implications for Universal Vaccine Development. Cells 2022; 11:cells11244017. [PMID: 36552780 PMCID: PMC9777387 DOI: 10.3390/cells11244017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) poses a significant threat to the livestock industry. Through their recognition of the conserved epitopes presented by the swine leukocyte antigen (SLA), T cells play a pivotal role in the antiviral immunity of pigs. Herein, based on the peptide binding motif of SLA-2*HB01, from an original SLA-2 allele, a series of functional T-cell epitopes derived from the dominant antigen VP1 of FMDV with high binding capacity to SLA-2 were identified. Two parallel peptides, Hu64 and As64, from the O and Asia I serotypes, respectively, were both crystallized with SLA-2*HB01. Compared to SLA-1 and SLA-3, the SLA-2 structures showed the flexibility of residues in the P4, P6, and P8 positions and in their potential interface with TCR. Notably, the peptides Hu64 and As64 adopted quite similar overall conformation when bound to SLA-2*HB01. Hu64 has two different conformations, a more stable 'chair' conformation and an unstable 'boat' conformation observed in the two molecules of one asymmetric unit, whereas only a single 'chair' conformation was observed for As64. Both Hu64 and As64 could induce similar dominant T-cell activities. Our interdisciplinary study establishes a basis for the in-depth interpretation of the peptide presentation of SLA-I, which can be used toward the development of universal vaccines.
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Affiliation(s)
- Lei Feng
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
- CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Yong-Yu Gao
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
- College of Animal Medicine, Jilin Agricultural University, Changchun 130118, China
| | - Mingwei Sun
- CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Zi-Bin Li
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
- Department of Microbiology and Immunology, College of Veterinary Medicine, China Agricultural University, Beijing 100094, China
| | - Qiang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Jie Yang
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
- NHC Key Laboratory of Biosafety, Research Unit of Adaptive Evolution and Control of Emerging Viruses, Chinese Academy of Medical Sciences, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Cui Qiao
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
- CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Hang Jin
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
| | - Hong-Sheng Feng
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
| | - Yu-Han Xian
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
| | - Jianxun Qi
- CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - George F. Gao
- CAS Key Laboratory of Pathogen Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- NHC Key Laboratory of Biosafety, Research Unit of Adaptive Evolution and Control of Emerging Viruses, Chinese Academy of Medical Sciences, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
- Correspondence: (G.F.G.); (W.J.L.); (F.-S.G.)
| | - William J. Liu
- NHC Key Laboratory of Biosafety, Research Unit of Adaptive Evolution and Control of Emerging Viruses, Chinese Academy of Medical Sciences, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
- Correspondence: (G.F.G.); (W.J.L.); (F.-S.G.)
| | - Feng-Shan Gao
- Department of Bioengineering, College of Life and Health, Dalian University, Dalian 116622, China
- Correspondence: (G.F.G.); (W.J.L.); (F.-S.G.)
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Khan S, Shaker B, Ahmad S, Abbasi SW, Arshad M, Haleem A, Ismail S, Zaib A, Sajjad W. Towards a novel peptide vaccine for Middle East respiratory syndrome coronavirus and its possible use against pandemic COVID-19. J Mol Liq 2021; 324:114706. [PMID: 33173250 PMCID: PMC7644433 DOI: 10.1016/j.molliq.2020.114706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/05/2020] [Accepted: 11/02/2020] [Indexed: 12/02/2022]
Abstract
Middle East respiratory syndrome coronavirus (MERS-CoV) is an emerging health concern due to its high mortality rate of 35%. At present, no vaccine is available to protect against MERS-CoV infections. Therefore, an in silico search for potential antigenic epitopes in the non-redundant proteome of MERS-CoV was performed herein. First, a subtractive proteome-based approach was employed to look for the surface exposed and host non-homologous proteins. Following, immunoinformatics analysis was performed to predict antigenic B and T cell epitopes that were used in the design of a multi-epitopes peptide. Molecular docking study was carried out to predict vaccine construct affinity of binding to Toll-like receptor 3 (TLR3) and understand its binding conformation to extract ideas about its processing by the host immune system. We identified membrane protein, envelope small membrane protein, non-structural protein ORF3, non-structural protein ORF5, and spike glycoprotein as potential candidates for subunit vaccine designing. The designed multi-epitope peptide then linked to β-defensin adjuvant is showing high antigenicity. Further, the sequence of the designed vaccine construct is optimized for maximum expression in the Escherichia coli expression system. A rich pattern of hydrogen and hydrophobic interactions of the construct was observed with the TLR3 allowing stable binding of the construct at the docked site as predicted by the molecular dynamics simulation and MM-PBSA binding energies. We expect that the panel of subunit vaccine candidates and the designed vaccine construct could be highly effective in immunizing populations from infections caused by MERS-CoV and could possible applied on the current pandemic COVID-19.
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Affiliation(s)
- Salman Khan
- School of Life Sciences, Lanzhou University, Lanzhou, Gansu 73000, PR China
| | - Bilal Shaker
- School of Integrative Engineering, Chung ANG University, Seoul, South Korea
| | - Sajjad Ahmad
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sumra Wajid Abbasi
- Department of Biological Sciences, National University of Medical Sciences, the Mall, Rawalpindi 46000, Pakistan
| | - Muhammad Arshad
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Abdul Haleem
- Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Saba Ismail
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Anita Zaib
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Wasim Sajjad
- Department of Biological Sciences, National University of Medical Sciences, the Mall, Rawalpindi 46000, Pakistan
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Tsukamoto T. Gene Therapy Approaches to Functional Cure and Protection of Hematopoietic Potential in HIV Infection. Pharmaceutics 2019; 11:pharmaceutics11030114. [PMID: 30862061 PMCID: PMC6470728 DOI: 10.3390/pharmaceutics11030114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 12/28/2022] Open
Abstract
Although current antiretroviral drug therapy can suppress the replication of human immunodeficiency virus (HIV), a lifelong prescription is necessary to avoid viral rebound. The problem of persistent and ineradicable viral reservoirs in HIV-infected people continues to be a global threat. In addition, some HIV-infected patients do not experience sufficient T-cell immune restoration despite being aviremic during treatment. This is likely due to altered hematopoietic potential. To achieve the global eradication of HIV disease, a cure is needed. To this end, tremendous efforts have been made in the field of anti-HIV gene therapy. This review will discuss the concepts of HIV cure and relative viral attenuation and provide an overview of various gene therapy approaches aimed at a complete or functional HIV cure and protection of hematopoietic functions.
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Affiliation(s)
- Tetsuo Tsukamoto
- Department of Immunology, Kindai University Faculty of Medicine, Osaka 5898511, Japan.
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