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Zeng Y, Song F, Luo G, Yang H, Li C, Liu W, Li T, Zhang S, Wang Y, Huang C, Ge S, Zhang J, Xia N. Generation and characterization of mouse monoclonal antibodies against the VP4 protein of group A human rotaviruses. Antiviral Res 2022; 207:105407. [PMID: 36152816 DOI: 10.1016/j.antiviral.2022.105407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/29/2022] [Accepted: 09/01/2022] [Indexed: 12/01/2022]
Abstract
Human rotaviruses (RVs) are the leading cause of severe diarrhea in infants and young children worldwide. Among the structural proteins, as a spike protein, rotavirus VP4 plays a key role in both viral attachment and penetration. Currently, studies on monoclonal antibodies (mAbs) against VP4 are limited. In this study, mice were immunized with truncated VP4* to produce murine mAbs. In total, 50 mAbs were produced and characterized. Twenty-four mAbs were genotype-specific and 20 mAbs recognized the common VP4 epitopes shared by P[8], P[4], and P[6] viruses. Thirty-five of the 50 mAbs were neutralizing mAbs, among which nine mAbs could neutralize all three P-genotype RVs, and 10 neutralizing mAbs exhibited conformational sensitivity. Ten mAbs recognized dominant neutralizing epitopes, including the broadly neutralizing mAb 9C4 recognized conformational epitope. Further investigation shows that S376 and S464 are key amino acids for 9C4 binding, however, the exact binding sites of 9C4 remain to be fully defined. Overall, this panel of mAbs has demonstrated utility as immunodiagnostic and research reagents, and could potentially serve as crucial tools for exploring the neutralizing mechanisms and quality control of VP4* protein-based RV subunit vaccines. Further evaluation of cross-neutralizing mAbs could not only improve the understanding of the heterotypic protection conferred by RV vaccines, but also facilitate the development of broadly protective RV vaccines.
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Affiliation(s)
- Yuanjun Zeng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Feibo Song
- The Research Unit of Frontier Technology of Structural Vaccinology of Chinese Academy of Medical Sciences, People's Republic of China
| | - Guoxing Luo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Han Yang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Cao Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Wei Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Tingdong Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China.
| | - Shiyin Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Yingbin Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China.
| | - Chenghao Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Shengxiang Ge
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China.
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen, People's Republic of China; The Research Unit of Frontier Technology of Structural Vaccinology of Chinese Academy of Medical Sciences, People's Republic of China
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3
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Li T, Chen J, Zheng Q, Xue W, Zhang L, Rong R, Zhang S, Wang Q, Hong M, Zhang Y, Cui L, He M, Lu Z, Zhang Z, Chi X, Li J, Huang Y, Wang H, Tang J, Ying D, Zhou L, Wang Y, Yu H, Zhang J, Gu Y, Chen Y, Li S, Xia N. Identification of a cross-neutralizing antibody that targets the receptor binding site of H1N1 and H5N1 influenza viruses. Nat Commun 2022; 13:5182. [PMID: 36056024 PMCID: PMC9439264 DOI: 10.1038/s41467-022-32926-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 08/23/2022] [Indexed: 11/09/2022] Open
Abstract
Influenza A viruses pose a significant threat globally each year, underscoring the need for a vaccine- or antiviral-based broad-protection strategy. Here, we describe a chimeric monoclonal antibody, C12H5, that offers neutralization against seasonal and pandemic H1N1 viruses, and cross-protection against some H5N1 viruses. Notably, C12H5 mAb offers broad neutralizing activity against H1N1 and H5N1 viruses by controlling virus entry and egress, and offers protection against H1N1 and H5N1 viral challenge in vivo. Through structural analyses, we show that C12H5 engages hemagglutinin (HA), the major surface glycoprotein on influenza, at a distinct epitope overlapping the receptor binding site and covering the 140-loop. We identified eight highly conserved (~90%) residues that are essential for broad H1N1 recognition, with evidence of tolerance for Asp or Glu at position 190; this site is a molecular determinant for human or avian host-specific recognition and this tolerance endows C12H5 with cross-neutralization potential. Our results could benefit the development of antiviral drugs and the design of broad-protection influenza vaccines. Circulating subtypes of Influenza viruses seasonally change and therefore vaccines need to be matched to these strains each year, which is why there is a need for next-generation vaccines that can elicit broad and cross-type protection. Here, Li et al. generate a human-mouse chimeric antibody with broad neutralizing activity against seasonal and pandemic H1N1 and some H5N1 viruses in vivo and identify residues on hemagglutinin relevant for its broad neutralization activity.
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Affiliation(s)
- Tingting Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Junyu Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Qingbing Zheng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Wenhui Xue
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Limin Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Rui Rong
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Sibo Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Qian Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Minqing Hong
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Yuyun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Lingyan Cui
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Maozhou He
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Zhen Lu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Zhenyong Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Xin Chi
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Jinjin Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Yang Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Hong Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Jixian Tang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Dong Ying
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Lizhi Zhou
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Yingbin Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Hai Yu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China.,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China
| | - Ying Gu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China. .,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China.
| | - Yixin Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China. .,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China.
| | - Shaowei Li
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China. .,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China.
| | - Ningshao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Life Sciences, School of Public Health, Xiamen University, 361102, Xiamen, Fujian, China. .,National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, 361102, Xiamen, Fujian, China. .,Research Unit of Frontier Technology of Structural Vaccinology, Chinese Academy of Medical Sciences, 361102, Xiamen, Fujian, China.
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