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Wei J, Chen L, Xu Z, Liu P, Zhu Y, Lin T, Yang L, Huang Y, Lv Z. Identification and Characterization of a Novel Quanzhou Mulberry Virus from Mulberry ( Morus alba). Viruses 2023; 15:v15051131. [PMID: 37243217 DOI: 10.3390/v15051131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
In this study, we discovered a new virus named Quanzhou mulberry virus (QMV), which was identified from the leaves of an ancient mulberry tree. This tree is over 1300 years old and is located at Fujian Kaiyuan Temple, a renowned cultural heritage site in China. We obtained the complete genome sequence of QMV using RNA sequencing followed by rapid amplification of complementary DNA ends (RACE). The QMV genome is 9256 nucleotides (nt) long and encodes five open reading frames (ORFs). Its virion was made of icosahedral particles. Phylogenetic analysis suggests that it belongs to the unclassified Riboviria. An infectious clone for QMV was generated and agroinfiltrated into Nicotiana benthamiana and mulberry, resulting in no visible disease symptoms. However, systemic movement of the virus was only observed in mulberry seedlings, suggesting that it has a host-specific pattern of movement. Our findings provide a valuable reference for further studies on QMV and related viruses, contributing to the understanding of viral evolution and biodiversity in mulberry.
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Affiliation(s)
- Jia Wei
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Lei Chen
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Zilong Xu
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Peigang Liu
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Yan Zhu
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Tianbao Lin
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Lu Yang
- Key Laboratory of Forest Resources and Utilization in Xinjiang of National Forestry and Grassland Administration, Urumqi 830052, China
- Key Laboratory of Fruit Tree Species Breeding and Cultivation in Xinjiang, Urumqi 830052, China
| | - Yuan Huang
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
| | - Zhiqiang Lv
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
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Hu Z, Huang Y, Zhao J, Hu J, Hu S, Liu X. Expression and characterization of a recombinant broadly-reactive monoclonal antibody against group 1 and 2 influenza viruses. Protein Expr Purif 2022; 192:106046. [PMID: 35007721 DOI: 10.1016/j.pep.2022.106046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 11/17/2022]
Abstract
Production of broadly-reactive antibodies is critical for universal immunodiagnosis of rapidly-evolving influenza viruses. Most monoclonal antibodies (mAbs) are generated in mice using the hybridoma technology which involves labor- and time-consuming screening and low yield issues. In this study, a recombinant antibody based on a broadly-reactive mAb against the hemagglutinin (HA) stalk of H7N9 avian influenza virus was expressed in CHO cells and its biological characteristics, cross-reactivity and epitope recognition were identified. The variable genes of the parental antibody were amplified and cloned into the antibody-expressing plasmids containing the constant genes of murine IgG1. The recombinant antibody was expressed in high yield and purity in CHO cells and showed similar features to the parental antibody, including negative hemagglutination inhibition activity against H7N9 virus and high binding activity with the H7N9 HA protein. Notably, the recombinant antibody exhibited a broad reactivity with different influenza subtypes belonging to group 1 and group 2, which was associated with its recognition of a highly-conserved epitope in the stalk, as observed for the parental antibody. Our results suggest that cell-based antibody expression system can be utilized as an important alternative to the hybridoma technology for antibody production for influenza virus diagnostics.
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MESH Headings
- Animals
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/isolation & purification
- Antibodies, Monoclonal/pharmacology
- Antibodies, Viral/genetics
- Antibodies, Viral/immunology
- Antibodies, Viral/isolation & purification
- Antibodies, Viral/pharmacology
- CHO Cells
- Cricetinae
- Cricetulus
- Cross Reactions
- Gene Expression
- Hemagglutinin Glycoproteins, Influenza Virus/genetics
- Hemagglutinin Glycoproteins, Influenza Virus/immunology
- Humans
- Influenza A Virus, H7N9 Subtype/genetics
- Influenza A Virus, H7N9 Subtype/immunology
- Influenza, Human/virology
- Mice
- Orthomyxoviridae/classification
- Orthomyxoviridae/drug effects
- Orthomyxoviridae/immunology
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Affiliation(s)
- Zenglei Hu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Ya Huang
- Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Jiangyan Zhao
- Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Jiao Hu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Shunlin Hu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Xiufan Liu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, China.
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