|
1
|
Fan J, Li S, Zhang Y, Zheng J, Wang D, Liao Y, Cui Z, Zhao D, Barouch DH, Yu J. Early Emerging SARS-CoV-2 Spike Mutants Are Diversified in Virologic Properties but Elicit Compromised Antibody Responses. Viruses 2023; 15:2401. [PMID: 38140642 PMCID: PMC10747620 DOI: 10.3390/v15122401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/07/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Despite the effective antivirals and vaccines, COVID-19 remains a public health concern. The mutations that occurred during the early stage of the pandemic can be valuable in assessing the viral fitness and evolutionary trajectory. In this study, we analyzed a panel of 2969 spike sequences deposited in GISAID before April 2020 and characterized nine representative spike single-point mutants in detail. Compared with the WA01/2020, most (8 out of 9) mutants demonstrated an equivalent or diminished protein expression or processing, pseudovirus infectivity, and cell-cell fusion. Interestingly, most of the mutants in native form elicited minimum antibody responses in mice despite unaltered CD4+ and CD8+ T cell responses. The mutants remained sensitive to the antisera and the type I interferon. Taken together, these data suggest that the early emerging mutants are virologically divergent, and some of which showed transmission fitness. Our findings have important implications for the retrospective tracing of the early SARS-CoV-2 transmission and future pandemic preparedness.
Collapse
Affiliation(s)
- Junhao Fan
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510182, China;
- Guangzhou National Laboratory, Bio-Island, Guangzhou 510005, China; (S.L.); (Y.Z.); (J.Z.); (D.W.); (Z.C.)
| | - Shixiong Li
- Guangzhou National Laboratory, Bio-Island, Guangzhou 510005, China; (S.L.); (Y.Z.); (J.Z.); (D.W.); (Z.C.)
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yao Zhang
- Guangzhou National Laboratory, Bio-Island, Guangzhou 510005, China; (S.L.); (Y.Z.); (J.Z.); (D.W.); (Z.C.)
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Jihao Zheng
- Guangzhou National Laboratory, Bio-Island, Guangzhou 510005, China; (S.L.); (Y.Z.); (J.Z.); (D.W.); (Z.C.)
| | - Dongfang Wang
- Guangzhou National Laboratory, Bio-Island, Guangzhou 510005, China; (S.L.); (Y.Z.); (J.Z.); (D.W.); (Z.C.)
| | - Yunxi Liao
- Department of Biomedical Informatics, School of Basic Medical Sciences, Peking University, Beijing 100191, China; (Y.L.); (D.Z.)
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
| | - Zhibo Cui
- Guangzhou National Laboratory, Bio-Island, Guangzhou 510005, China; (S.L.); (Y.Z.); (J.Z.); (D.W.); (Z.C.)
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Dongyu Zhao
- Department of Biomedical Informatics, School of Basic Medical Sciences, Peking University, Beijing 100191, China; (Y.L.); (D.Z.)
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China
| | - Dan H. Barouch
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Jingyou Yu
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510182, China;
- Guangzhou National Laboratory, Bio-Island, Guangzhou 510005, China; (S.L.); (Y.Z.); (J.Z.); (D.W.); (Z.C.)
| |
Collapse
|
|
2
|
Yuan F, Zheng A. Replicating-Competent VSV-Vectored Pseudotyped Viruses. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1407:329-348. [PMID: 36920706 DOI: 10.1007/978-981-99-0113-5_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Vesicular stomatitis virus (VSV) is prototype virus in the family of Rhabdoviridae. Reverse genetic platform has enabled the genetic manipulation of VSV as a powerful live viral vector. Replicating-competent VSV is constructed by replacing the original VSV glycoprotein gene with heterologous envelope genes. The resulting recombinant viruses are able to replicate in permissive cells and incorporate the foreign envelope proteins on the surface of the viral particle without changing the bullet-shape morphology. Correspondingly, the cell tropism of replicating-competent VSV is determined by the foreign envelope proteins. Replicating-competent VSVs have been successfully used for selecting critical viral receptors or host factors, screening mutants that escape therapeutic antibodies, and developing VSV-based live viral vaccines.
Collapse
Affiliation(s)
- Fei Yuan
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Aihua Zheng
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
| |
Collapse
|
|
3
|
Sun W, He L, Lou H, Fan W, Yang L, Cheng G, Liu W, Sun L. The Cross-Protective Immunity Landscape Among Different SARS-CoV-2 Variant RBDs. Front Immunol 2022; 13:898520. [PMID: 35757743 PMCID: PMC9226324 DOI: 10.3389/fimmu.2022.898520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/17/2022] [Indexed: 11/13/2022] Open
Abstract
Despite the fact that SARS-CoV-2 vaccines have been available in most parts of the world, the epidemic status remains grim with new variants emerging and escaping the immune protection of existing vaccines. Therefore, the development of more effective antigens and evaluation of their cross-protective immunity against different SARS-CoV-2 variants are particularly urgent. In this study, we expressed the wild type (WT), Alpha, Beta, Delta, and Lambda RBD proteins to immunize mice and evaluated their cross-neutralizing activity against different pseudoviruses (WT, Alpha, Beta, Delta, Lambda, and Omicron). All monovalent and pentavalent RBD antigens induced high titers of IgG antibodies against different variant RBD antigens. In contrast, WT RBD antigen-induced antibodies showed a lower neutralizing activity against Beta, Delta, Lambda, and Omicron pseudoviruses compared to neutralization against itself. Interestingly, Beta RBD antigen and multivalent antigen induced broader cross-neutralization antibodies than other variant RBD antigens. These data provide a reference for vaccine strain selection and universal COVID-19 vaccine design to fight the constant emergence of new SARS-CoV-2 variants.
Collapse
Affiliation(s)
- Wenqiang Sun
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,Shenzhen Bay Laboratory, Institute of Infectious Diseases, Shenzhen, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources & Laboratory of Animal Infectious Diseases, College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning, China
| | - Lihong He
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Huicong Lou
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources & Laboratory of Animal Infectious Diseases, College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning, China
| | - Wenhui Fan
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Limin Yang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Gong Cheng
- Shenzhen Bay Laboratory, Institute of Infectious Diseases, Shenzhen, China.,Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Wenjun Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,Shenzhen Bay Laboratory, Institute of Infectious Diseases, Shenzhen, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources & Laboratory of Animal Infectious Diseases, College of Animal Sciences and Veterinary Medicine, Guangxi University, Nanning, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Lei Sun
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|