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Pseudotyped Viruses for Lyssavirus. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1407:191-208. [PMID: 36920698 DOI: 10.1007/978-981-99-0113-5_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Lyssaviruses, which belong to the family Rhabdoviridae, are enveloped and bullet-shaped ssRNA viruses with genetic diversity. All members of Lyssavirus genus are known to infect warm-blooded animals and cause the fatal disease rabies. The rabies virus (RABV) in lyssavirus is the major pathogen to cause fatal rabies. The pseudotyped RABV is constructed to study the biological functions of G protein and evaluation of anti-RABV products including vaccine-induced antisera, rabies immunoglobulins (RIG), neutralizing mAbs, and other antiviral inhibitors. In this chapter, we focus on RABV as a representative and describe the construction of RABV G protein bearing pseudotyped virus and its applications. Other non-RABV lyssaviruses are also included.
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Construction and evaluation of recombinant Lactobacillus plantarum NC8 delivering one single or two copies of G protein fused with a DC-targeting peptide (DCpep) as novel oral rabies vaccine. Vet Microbiol 2020; 251:108906. [PMID: 33160196 DOI: 10.1016/j.vetmic.2020.108906] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/20/2020] [Indexed: 11/24/2022]
Abstract
Rabies remains an important public health threat in most developing countries. To develop a more effective and safe oral vaccine against rabies, we constructed recombinant Lactobacillus plantarum NC8 carrying one or two copies of the G gene with a dendritic cell-targeting peptide (DCpep) fused at the C-terminal designated NC8-pSIP409-sRVG or NC8-pSIP409-dRVG, respectively. The immunogenicity and protective efficacy of these recombinant Lactobacillus plantarum against RABV were evaluated by oral administration in a mouse model. The results showed that recombinant NC8-pSIP409-dRVG possessed more G protein, resulting in more functional maturation of DCs. After three cycle of oral immunization, NC8-pSIP409-dRVG induced significantly higher levels of specific IgG antibody and mixed Th1/Th2 with a strong Th1-biasd immune response in mice. Most importantly, although the titers of RABV neutralizing antibody (VNA) were below the threshold of 0.5 IU/mL, the NC8-pSIP409-dRVG could protect 60 % of inoculated mice against lethal RABV challenge. These data reveal that recombinant NC8-pSIP409-dRVG may be a novel and promising oral vaccine candidate to prevent and control of animal rabies.
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3
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Wang W, Ma J, Nie J, Li J, Cao S, Wang L, Yu C, Huang W, Li Y, Yu Y, Liang M, Zirkle B, Chen XS, Li X, Kong W, Wang Y. Antigenic variations of recent street rabies virus. Emerg Microbes Infect 2020; 8:1584-1592. [PMID: 31682199 PMCID: PMC6844422 DOI: 10.1080/22221751.2019.1683436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The genetic and/or antigenic differences between street rabies virus (RABV) and vaccine strains could potentially affect effectiveness of rabies vaccines. As such, it is important to continue monitoring the glycoprotein (G) of the street isolates. All RABVG sequences in public database were retrieved and analysed. Using a pseudovirus system, we investigated 99 naturally occurring mutants for their reactivities to well-characterized neutralizing monoclonal antibodies (mAbs) and vaccine-induced antisera. A divergence in G sequences was found between vaccine strains and recent street isolates, with mutants demonstrating resistance to neutralizing mAbs and vaccine-induced antibodies. Moreover, antigenic variants were observed in a wide range of animal hosts and geographic locations, with most of them emerging since 2010. As the number of antigenic variants has increased in recent years, close monitoring on street isolates should be strengthened.
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Affiliation(s)
- Wenbo Wang
- College of Life Science, Jilin University, Changchun, People's Republic of China.,Division of Monoclonal Antibody Products, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Jian Ma
- Division of HIV/AIDS and Sex-Transmitted Virus Vaccines, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Jianhui Nie
- Division of HIV/AIDS and Sex-Transmitted Virus Vaccines, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Jia Li
- Division of Arboviral Vaccine, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Shouchun Cao
- Division of Arboviral Vaccine, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Lan Wang
- Division of Monoclonal Antibody Products, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Chuanfei Yu
- Division of Monoclonal Antibody Products, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Weijin Huang
- Division of HIV/AIDS and Sex-Transmitted Virus Vaccines, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Yuhua Li
- Division of Arboviral Vaccine, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Yongxin Yu
- Division of Arboviral Vaccine, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
| | - Mifang Liang
- Key Laboratory for Medical Virology, NHFPC, National Institute for Viral Disease Control and Prevention, China CDC, Beijing, People's Republic of China
| | - Brett Zirkle
- Department of Molecular and Computational Biology/Chemistry Department/Norris Cancer Center, University of Southern California, Los Angeles, CA, USA
| | - Xiaojiang S Chen
- Department of Molecular and Computational Biology/Chemistry Department/Norris Cancer Center, University of Southern California, Los Angeles, CA, USA
| | - Xuguang Li
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Canada
| | - Wei Kong
- College of Life Science, Jilin University, Changchun, People's Republic of China
| | - Youchun Wang
- College of Life Science, Jilin University, Changchun, People's Republic of China.,Division of HIV/AIDS and Sex-Transmitted Virus Vaccines, National Institutes for Food and Drug Control (NIFDC), Beijing, People's Republic of China
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4
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Kato H, Takayama-Ito M, Iizuka-Shiota I, Fukushi S, Posadas-Herrera G, Horiya M, Satoh M, Yoshikawa T, Yamada S, Harada S, Fujii H, Shibamura M, Inagaki T, Morimoto K, Saijo M, Lim CK. Development of a recombinant replication-deficient rabies virus-based bivalent-vaccine against MERS-CoV and rabies virus and its humoral immunogenicity in mice. PLoS One 2019; 14:e0223684. [PMID: 31589656 PMCID: PMC6779238 DOI: 10.1371/journal.pone.0223684] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 09/25/2019] [Indexed: 12/25/2022] Open
Abstract
Middle East respiratory syndrome-coronavirus (MERS-CoV) is an emerging virus that causes severe disease with fatal outcomes; however, there are currently no approved vaccines or specific treatments against MERS-CoV. Here, we developed a novel bivalent vaccine against MERS-CoV and rabies virus (RV) using the replication-incompetent P-gene-deficient RV (RVΔP), which has been previously established as a promising and safe viral vector. MERS-CoV spike glycoprotein comprises S1 and S2 subunits, with the S1 subunit being a primary target of neutralizing antibodies. Recombinant RVΔP, which expresses S1 fused with transmembrane and cytoplasmic domains together with 14 amino acids from the ectodomains of the RV-glycoprotein (RV-G), was developed using a reverse genetics method and named RVΔP-MERS/S1. Following generation of RVΔP-MERS/S1 and RVΔP, our analysis revealed that they shared similar growth properties, with the expression of S1 in RVΔP-MERS/S1-infected cells confirmed by immunofluorescence and western blot, and the immunogenicity and pathogenicity evaluated using mouse infection experiments. We observed no rabies-associated signs or symptoms in mice inoculated with RVΔP-MERS/S1. Moreover, virus-specific neutralizing antibodies against both MERS-CoV and RV were induced in mice inoculated intraperitoneally with RVΔP-MERS/S1. These findings indicate that RVΔP-MERS/S1 is a promising and safe bivalent-vaccine candidate against both MERS-CoV and RV.
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Affiliation(s)
- Hirofumi Kato
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Mutsuyo Takayama-Ito
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
- * E-mail: (MT); (CL)
| | - Itoe Iizuka-Shiota
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Shuetsu Fukushi
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | | | - Madoka Horiya
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Masaaki Satoh
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Tomoki Yoshikawa
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Souichi Yamada
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Shizuko Harada
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Hikaru Fujii
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Miho Shibamura
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Takuya Inagaki
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
- Department of Life Science and Medical Bioscience, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Kinjiro Morimoto
- Department of Pharmacy, Yasuda Women’s University, Hiroshima, Hiroshima, Japan
| | - Masayuki Saijo
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
| | - Chang-Kweng Lim
- Department of Virology I, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan
- * E-mail: (MT); (CL)
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5
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Takayama-Ito M, Lim CK, Yamaguchi Y, Posadas-Herrera G, Kato H, Iizuka I, Islam MT, Morimoto K, Saijo M. Replication-incompetent rabies virus vector harboring glycoprotein gene of lymphocytic choriomeningitis virus (LCMV) protects mice from LCMV challenge. PLoS Negl Trop Dis 2018; 12:e0006398. [PMID: 29659579 PMCID: PMC5901774 DOI: 10.1371/journal.pntd.0006398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 03/21/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Lymphocytic choriomeningitis virus (LCMV) causes a variety of diseases, including asymptomatic infections, meningitis, and congenital infections in the fetus of infected mother. The development of a safe and effective vaccine against LCMV is imperative. This study aims to develop a new candidate vaccine against LCMV using a recombinant replication-incompetent rabies virus (RV) vector. METHODOLOGY/PRINCIPAL FINDINGS In this study, we have generated a recombinant deficient RV expressing the LCMV glycoprotein precursor (GPC) (RVΔP-LCMV/GPC) which is lacking the RV-P gene. RVΔP-LCMV/GPC is able to propagate only in cells expressing the RV-P protein. In contrast, the LCMV-GPC can be expressed in general cells, which do not express RV-P protein. The ability of RVΔP-LCMV/GPC to protect mice from LCMV infection and induce cellular immunity was assessed. Mice inoculated intraperitoneally with RVΔP-LCMV/GPC showed higher survival rates (88.2%) than those inoculated with the parental recombinant RV-P gene-deficient RV (RVΔP) (7.7%) following a LCMV challenge. Neutralizing antibody (NAb) against LCMV was not induced, even in the sera of surviving mice. CD8+ T-cell depletion significantly reduced the survival rates of RVΔP-LCMV/GPC-inoculated mice after the LCMV challenge. These results suggest that CD8+ T cells play a major role in the observed protection against LCMV. In contrast, NAbs against RV were strongly induced in sera of mice inoculated with either RVΔP-LCMV/GPC or RVΔP. In safety tests, suckling mice inoculated intracerebrally with RVΔP-LCMV/GPC showed no symptoms. CONCLUSIONS/SIGNIFICANCE These results show RVΔP-LCMV/GPC might be a promising candidate vaccine with dual efficacy, protecting against both RV and LCMV.
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Affiliation(s)
- Mutsuyo Takayama-Ito
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
| | - Chang-Kweng Lim
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
| | - Yukie Yamaguchi
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
| | - Guillermo Posadas-Herrera
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
| | - Hirofumi Kato
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
- Division of Global Infectious Diseases, Department of Infection and Epidemiology, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
| | - Itoe Iizuka
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
| | - Md. Taimur Islam
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
- Laboratory of Virology and Viral Infections, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Kyonancho, Musashino-shi, Tokyo, Japan
| | - Kinjiro Morimoto
- Faculty of Pharmacy, Yasuda Women's University, Yasuhigashi, Asaminami, Hiroshima, Japan
| | - Masayuki Saijo
- Department of virology I, National Institute of Infectious Diseases, Toyama, Shinjuku-ku, Tokyo, Japan
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Evans JS, Selden D, Wu G, Wright E, Horton DL, Fooks AR, Banyard AC. Antigenic site changes in the rabies virus glycoprotein dictates functionality and neutralizing capability against divergent lyssaviruses. J Gen Virol 2018; 99:169-180. [PMID: 29300155 DOI: 10.1099/jgv.0.000998] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Lyssavirus infection has a near 100 % case fatality rate following the onset of clinical disease, and current rabies vaccines confer protection against all reported phylogroup I lyssaviruses. However, there is little or no protection against more divergent lyssaviruses and so investigation into epitopes within the glycoprotein (G) that dictate a neutralizing response against divergent lyssaviruses is warranted. Importantly, the facilities required to work with these pathogens, including wild-type and mutated forms of different lyssaviruses, are scarcely available and, as such, this type of study is inherently difficult to perform. The relevance of proposed immunogenic antigenic sites within the lyssavirus glycoprotein was assessed by swapping sites between phylogroup-I and -II glycoproteins. Demonstrable intra- but limited inter-phylogroup cross-neutralization was observed. Pseudotype viruses (PTVs) presenting a phylogroup-I glycoprotein containing phylogroup-II antigenic sites (I, II III or IV) were neutralized by antibodies raised against phylogroup-II PTV with the site II (IIb, aa 34-42 and IIa, aa 198-200)-swapped PTVs being efficiently neutralized, whilst site IV-swapped PTV was poorly neutralized. Specific antibodies raised against PTV-containing antigenic site swaps between phylogroup-I and -II glycoproteins neutralized phylogroup-I PTVs efficiently, indicating an immunodominance of antigenic site II. Live lyssaviruses containing antigenic site-swapped glycoproteins were generated and indicated that specific residues within the lyssavirus glycoprotein dictate functionality and enable differential neutralizing antibody responses to lyssaviruses.
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Affiliation(s)
- J S Evans
- Wildlife Zoonoses and Vector Bourne Disease Research Group, Animal and Plant Health Agency, Woodham Lane, Weybridge, Surrey, KT15 3NB, UK.,University of Warwick, Gibbet Hill Road, Coventry, West Midlands, CV4 7AL, UK
| | - D Selden
- Wildlife Zoonoses and Vector Bourne Disease Research Group, Animal and Plant Health Agency, Woodham Lane, Weybridge, Surrey, KT15 3NB, UK
| | - G Wu
- Wildlife Zoonoses and Vector Bourne Disease Research Group, Animal and Plant Health Agency, Woodham Lane, Weybridge, Surrey, KT15 3NB, UK
| | - E Wright
- Viral Pseudotype Unit, Faculty of Science and Technology, University of Westminster, London, W1W 6UW, UK
| | - D L Horton
- School of Veterinary Medicine, University of Surrey, GU2 7AX, UK
| | - A R Fooks
- Wildlife Zoonoses and Vector Bourne Disease Research Group, Animal and Plant Health Agency, Woodham Lane, Weybridge, Surrey, KT15 3NB, UK.,Institute for Infection and Immunity, St. George's Hospital Medical School, University of London, London, UK
| | - A C Banyard
- Wildlife Zoonoses and Vector Bourne Disease Research Group, Animal and Plant Health Agency, Woodham Lane, Weybridge, Surrey, KT15 3NB, UK
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Cao Z, Zhang W, Ning X, Wang B, Liu Y, Li QX. Development of Monoclonal Antibodies Recognizing Linear Epitope: Illustration by Three Bacillus thuringiensis Crystal Proteins of Genetically Modified Cotton, Maize, and Tobacco. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10115-10122. [PMID: 29068685 DOI: 10.1021/acs.jafc.7b03426] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bacillus thuringiensis Cry1Ac, Cry1Ia1, and Cry1Ie are δ-endotoxin insecticidal proteins widely implemented in genetically modified organisms (GMO), such as cotton, maize, and potato. Western blot assay integrates electrophoresis separation power and antibody high specificity for monitoring specific exogenous proteins expressed in GMO. Procedures for evoking monoclonal antibody (mAb) for Western blot were poorly documented. In the present study, Cry1Ac partially denatured at 100 °C for 5 min was used as an immunogen to develop mAbs selectively recognizing a linear epitope of Cry1Ac for Western blot. mAb 5E9C6 and 3E6E2 selected with sandwich ELISA strongly recognized the heat semidenatured Cry1Ac. Particularly, 3E6E2 recognized both E. coli and cotton seed expressed Cry1Ac in Western blot. Such strategy of using partially denatured proteins as immunogens and using sandwich ELISA for mAb screening was also successfully demonstrated with production of mAbs against Cry1Ie for Western blot assay in maize.
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Affiliation(s)
- Zhen Cao
- College of Agriculture and Biotechnology, China Agricultural University , Beijing 100193, China
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa , Honolulu, Hawaii 96822, United States
| | - Wei Zhang
- College of Agriculture and Biotechnology, China Agricultural University , Beijing 100193, China
| | - Xiangxue Ning
- College of Agriculture and Biotechnology, China Agricultural University , Beijing 100193, China
| | - Baomin Wang
- College of Agriculture and Biotechnology, China Agricultural University , Beijing 100193, China
| | - Yunjun Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences , Beijing 100081, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa , Honolulu, Hawaii 96822, United States
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8
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Prokaryotic Expression and Monoclonal Antibody Preparation of Rabies Virus Phosphoprotein. Jundishapur J Microbiol 2017. [DOI: 10.5812/jjm.13022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Fallahi F, Wandeler AI, Nadin-Davis SA. Characterization of epitopes on the rabies virus glycoprotein by selection and analysis of escape mutants. Virus Res 2016; 220:161-71. [DOI: 10.1016/j.virusres.2016.04.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 04/22/2016] [Accepted: 04/22/2016] [Indexed: 10/21/2022]
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10
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Tang HB, Pan Y, Wei XK, Lu ZL, Lu W, Yang J, He XX, Xie LJ, Zeng L, Zheng LF, Xiong Y, Minamoto N, Luo TR. Re-emergence of rabies in the Guangxi province of Southern China. PLoS Negl Trop Dis 2014; 8:e3114. [PMID: 25275567 PMCID: PMC4183421 DOI: 10.1371/journal.pntd.0003114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 07/13/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Human rabies cases in the Guangxi province of China decreased from 839 in 1982 to 24 in 1995, but subsequently underwent a sharp increase, and has since maintained a high level. METHODOLOGY/PRINCIPAL FINDINGS 3,040 brain samples from normal dogs and cats were collected from 14 districts of Guangxi and assessed by RT-PCR. The brain samples showed an average rabies virus (RV) positivity rate of 3.26%, but reached 4.71% for the period Apr 2002 to Dec 2003. A total of 30 isolates were obtained from normal dogs and 28 isolates from rabid animals by the mouse inoculation test (MIT). Six representative group I and II RV isolates showed an LD50 of 10-5.35/ml to 10-6.19/ml. The reactivity of monoclonal antibodies (MAbs) to group I and II RV isolates from the Guangxi major epidemic showed that eight anti-G MAbs showed strong reactivity with isolates of group I and II with titers of ≥10,000; however, the MAbs 9-6, 13-3 and 12-14 showed lower reactivity. Phylogenetic analysis based on the G gene demonstrated that the Guangxi RV isolates have similar topologies with strong bootstrap values and are closely bonded. Alignment of deduced amino acids revealed that the mature G protein has four substitutions A96S, L132F, N436S, and A447I specific to group I, and 13 substitutions T90M, Y168C, S204G, T249I, P253S, S289T, V332I, Q382H, V427I, L474P, R463K Q486H, and T487N specific to group II, coinciding with the phylogenetic analysis of the isolates. CONCLUSIONS Re-emergence of human rabies has mainly occurred in rural areas of Guangxi since 1996. The human rabies incidence rate increased is related with RV positive rate of normal dogs. The Guangxi isolates tested showed a similar pathogenicity and antigenicity. The results of phylogenetic analysis coincide with that of alignment of deduced amino acids.
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Affiliation(s)
- Hai-Bo Tang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Guangxi, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Yan Pan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Guangxi, China
| | - Xian-Kai Wei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Guangxi, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Zhuan-Ling Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Guangxi, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Wu Lu
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Jian Yang
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Xiao-Xia He
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Lin-Juan Xie
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Lan Zeng
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Lie-Feng Zheng
- Guangxi Center for Animal Disease Control and Prevention, Guangxi, China
| | - Yi Xiong
- Guangxi Center for Animal Disease Control and Prevention, Guangxi, China
| | - Nobuyuki Minamoto
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
| | - Ting Rong Luo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Guangxi, China
- College of Animal Sciences and Veterinary Medicine, Guangxi University, Guangxi, China
- * E-mail:
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11
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Yamada K, Noguchi K, Nishizono A. Efficient N-glycosylation at position 37, but not at position 146, in the street rabies virus glycoprotein reduces pathogenicity. Virus Res 2013; 179:169-76. [PMID: 24177272 DOI: 10.1016/j.virusres.2013.10.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 10/18/2013] [Accepted: 10/21/2013] [Indexed: 12/29/2022]
Abstract
Most street rabies viruses have two N-glycosylation sites in their glycoproteins (G proteins), i.e., at Asn(37) and Asn(319), but Asn(37) is usually not core-glycosylated in an efficient manner. Previously, we reported the possible roles of single additional N-glycosylations at Asn(194) or Asn(247) in the cell adaptation and reduced pathogenicity of a street rabies virus, which suggest that N-glycosylation is closely related to the evolution of rabies viruses. In this study, we characterized two novel N-glycosylation-modified variants, N5C#7 and N5C#8, which were cloned using the limiting dilution method after serial passaging of the street rabies virus strain 1088 in mouse neuroblastoma-derived NA cells. N5C#7 had an L38R mutation in the G protein, which led to efficient core glycosylation at Asn(37). On the other hand, N5C#8 had a D146N mutation in the G protein, which led to an additional N-glycosylation at position 146. Both variants replicated highly efficiently in NA cells compared with the parental strain. Like the parental strain, both variants caused lethal infections in adult mice after intracerebral inoculation. However, N5C#7 exhibited reduced pathogenicity after intramuscular inoculation, whereas N5C#8 displayed the same level of pathogenicity as the parental strain. In summary, the efficient core glycosylation at position 37 was related to cell adaptation and the reduced pathogenicity of the street rabies virus. By contrast, despite of being related to cell adaptation, the additional N-glycosylation at position 146 did not affect the pathogenicity, which is consistent with a report that street rabies virus strains with N-glycosylation sites at positions 37, 146, and 319 have been isolated from rabid animals. Thus, the results of the present study provide additional evidence that supports the relationship between G protein N-glycosylation and rabies virus evolution.
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Affiliation(s)
- Kentaro Yamada
- School of Medicine, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan; Research Promotion Institute, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan.
| | - Kazuko Noguchi
- Department of Microbiology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Akira Nishizono
- School of Medicine, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan; Department of Microbiology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
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12
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Characterization of street rabies virus variants with an additional N-glycan at position 247 in the glycoprotein. Arch Virol 2013; 159:207-16. [DOI: 10.1007/s00705-013-1805-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 06/24/2013] [Indexed: 02/02/2023]
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13
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Both L, van Dolleweerd C, Wright E, Banyard AC, Bulmer-Thomas B, Selden D, Altmann F, Fooks AR, Ma JKC. Production, characterization, and antigen specificity of recombinant 62-71-3, a candidate monoclonal antibody for rabies prophylaxis in humans. FASEB J 2013; 27:2055-65. [PMID: 23371065 PMCID: PMC3633812 DOI: 10.1096/fj.12-219964] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/22/2013] [Indexed: 01/18/2023]
Abstract
Rabies kills many people throughout the developing world every year. The murine monoclonal antibody (mAb) 62-71-3 was recently identified for its potential application in rabies postexposure prophylaxis (PEP). The purpose here was to establish a plant-based production system for a chimeric mouse-human version of mAb 62-71-3, to characterize the recombinant antibody and investigate at a molecular level its interaction with rabies virus glycoprotein. Chimeric 62-71-3 was successfully expressed in Nicotiana benthamiana. Glycosylation was analyzed by mass spectroscopy; functionality was confirmed by antigen ELISA, as well as rabies and pseudotype virus neutralization. Epitope characterization was performed using pseudotype virus expressing mutagenized rabies glycoproteins. Purified mAb demonstrated potent viral neutralization at 500 IU/mg. A critical role for antigenic site I of the glycoprotein, as well as for two specific amino acid residues (K226 and G229) within site I, was identified with regard to mAb 62-71-3 neutralization. Pseudotype viruses expressing glycoprotein from lyssaviruses known not to be neutralized by this antibody were the controls. The results provide the molecular rationale for developing 62-71-3 mAb for rabies PEP; they also establish the basis for developing an inexpensive plant-based antibody product to benefit low-income families in developing countries.
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Affiliation(s)
- Leonard Both
- Hotung Molecular Immunology Unit, Division of Clinical Sciences, St. George's, University of London, London, UK
- Animal Health and Veterinary Laboratories Agency, Wildlife Zoonoses and Vector-Borne Diseases Research Group, Department of Virology, Weybridge, UK
| | - Craig van Dolleweerd
- Hotung Molecular Immunology Unit, Division of Clinical Sciences, St. George's, University of London, London, UK
| | - Edward Wright
- School of Life Sciences, University of Westminster, London, UK
- Wohl Virion Centre, Division of Infection and Immunity, University College London, London, UK; and
| | - Ashley C. Banyard
- Animal Health and Veterinary Laboratories Agency, Wildlife Zoonoses and Vector-Borne Diseases Research Group, Department of Virology, Weybridge, UK
| | - Bianca Bulmer-Thomas
- Wohl Virion Centre, Division of Infection and Immunity, University College London, London, UK; and
| | - David Selden
- Animal Health and Veterinary Laboratories Agency, Wildlife Zoonoses and Vector-Borne Diseases Research Group, Department of Virology, Weybridge, UK
| | - Friedrich Altmann
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Anthony R. Fooks
- Animal Health and Veterinary Laboratories Agency, Wildlife Zoonoses and Vector-Borne Diseases Research Group, Department of Virology, Weybridge, UK
| | - Julian K.-C. Ma
- Hotung Molecular Immunology Unit, Division of Clinical Sciences, St. George's, University of London, London, UK
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14
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Yang L, Cen J, Xue Q, Li J, Bi Y, Sun L, Liu W. Identification of rabies virus mimotopes screened from a phage display peptide library with purified dog anti-rabies virus serum IgG. Virus Res 2013; 174:47-51. [PMID: 23499997 DOI: 10.1016/j.virusres.2013.02.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 02/19/2013] [Accepted: 02/22/2013] [Indexed: 11/18/2022]
Abstract
The rabies virus glycoprotein (G) is a key protein for both virus infectivity and eliciting protective immunity as an antigen. What is more, the nucleoprotein (N) is also a significant rabies virus antigen. In this study, purified anti-rabies virus IgG from dogs immunized with the standard CVS-11 strain was used to screen the Ph.D.-12™ Phage Display Peptide Library for peptides that correspond to or mimic native G and N epitopes. In contrast to previous reports that use monoclonal antibodies or human anti-rabies virus serum, this study describes the first use of dog serum to screen for epitopes. After three rounds of biopanning, selected phage clones were identified by plaque screening, western blotting (WB), and ELISA. Positive phage clones were sequenced, and their amino acid sequences were deduced. Alignment of the peptide sequences to G and N indicated that the epitope peptides matched well with G amino acids at positions 34-42, 198-200, 226-264, 296-371, and 330-343, as well as to N amino acids at positions 22-168 (N-terminal) and 262-450 (C-terminal), confirming that the sequences were indeed mimicking epitopes. Thirty percent of the selected clones matched reported antigenic regions located at sites II and III of the glycoprotein. Two sequences, LEPKGRYDDPWT and ATRYDDIWASTA, that have no homology to the known antigenic sites of either the G or N exhibited a common RYDD-W-T motif that is highly homologous to the amino acid residues at positions 126-141 of the G. This finding indicates that this motif may be a new potential RABV G B cell epitope. Amino acids 126-141 containing the RYDD-W-T motif may become a novel key epitope region and allow the development of a rabies vaccine or diagnostic reagents for the treatment of rabies.
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Affiliation(s)
- Limin Yang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
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15
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Yamada K, Noguchi K, Nonaka D, Morita M, Yasuda A, Kawazato H, Nishizono A. Addition of a single N-glycan to street rabies virus glycoprotein enhances virus production. J Gen Virol 2013; 94:270-275. [DOI: 10.1099/vir.0.047852-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Most street rabies virus G proteins have two N-glycosylation sites, i.e. Asn37 and Asn319, whereas additional sites are found in fixed (laboratory adapted) viruses. In this study, we performed a pseudotyped virus assay using G-deficient rabies virus and demonstrated that single-N-glycan additions to the G protein of street rabies virus strain 1088, which are found in adapted strains, enhanced virus production in neural and non-neural cell lines, while additions to Asn194 or Asn247 enhanced production greatly. Moreover, we found that N-glycan additions at Asn194 or Asn247 facilitated the production of cell-associated virus. In contrast, deletion of the sequon at Asn37 reduced viral production, while a deletion at Asn319 resulted in extensive loss of production. Furthermore, G proteins lacking an N-glycan at Asn319 failed to fold into their correct structure and lost their fusion activity, indicating that Asn319
N-glycosylation is important for the functional expression of street virus G proteins.
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Affiliation(s)
- Kentaro Yamada
- Research Promotion Institute, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Kazuko Noguchi
- Department of Microbiology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
- Research Promotion Institute, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Daichi Nonaka
- Department of Microbiology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Muneshin Morita
- Department of Microbiology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Aiko Yasuda
- Research Promotion Institute, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Hiroaki Kawazato
- Research Promotion Institute, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
| | - Akira Nishizono
- Department of Microbiology, Faculty of Medicine, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
- Research Promotion Institute, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
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16
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Yamada K, Park CH, Noguchi K, Kojima D, Kubo T, Komiya N, Matsumoto T, Mitui MT, Ahmed K, Morimoto K, Inoue S, Nishizono A. Serial passage of a street rabies virus in mouse neuroblastoma cells resulted in attenuation: potential role of the additional N-glycosylation of a viral glycoprotein in the reduced pathogenicity of street rabies virus. Virus Res 2012; 165:34-45. [PMID: 22248643 DOI: 10.1016/j.virusres.2012.01.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Revised: 12/23/2011] [Accepted: 01/01/2012] [Indexed: 12/25/2022]
Abstract
Street rabies viruses are field isolates known to be highly neurotropic. However, the viral elements related to their pathogenicity have yet to be identified at the nucleotide or amino acid level. Here, through 30 passages in mouse neuroblastoma NA cells, we have established an attenuated variant of street rabies virus strain 1088, originating from a rabid woodchuck followed by 2 passages in the brains of suckling mice. The variant, 1088-N30, was well adapted to NA cells and highly attenuated in adult mice after intramuscular (i.m.) but not intracerebral (i.c.) inoculations. 1088-N30 had seven nucleotide substitutions, and the R196S mutation of the G protein led to an additional N-glycosylation. Street viruses usually possess one or two N-glycosylation sites on the G protein, 1088 has two, while an additional N-glycosylation site is observed in laboratory-adapted strains. We also established a cloned variant 1088-N4#14 by limiting dilution. Apart from the R196S mutation, 1088-N4#14 possessed only one amino acid substitution in the P protein, which is found in several field isolates. 1088-N4#14 also efficiently replicated in NA cells and was attenuated in adult mice after i.m. inoculations, although it was more pathogenic than 1088-N30. The spread of 1088-N30 in the brain was highly restricted after i.m. inoculations, although the pattern of 1088-N4#14's spread was intermediate between that of the parental 1088 and 1088-N30. Meanwhile, both variants strongly induced humoral immune responses in mice compared to 1088. Our results indicate that the additional N-glycosylation is likely related to the reduced pathogenicity. Taken together, we propose that the number of N-glycosylation sites in the G protein is one of the determinants of the pathogenicity of street rabies viruses.
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Affiliation(s)
- Kentaro Yamada
- Research Promotion Project, Oita University, 1-1 Idaigaoka, Hasama-machi, Yufu, Oita 879-5593, Japan
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17
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Aavula SM, Nimmagadda SV, Biradhar N, Sula S, Chandran D, Lingala R, Villuppanoor SA. Generation and Characterization of an scFv Directed against Site II of Rabies Glycoprotein. BIOTECHNOLOGY RESEARCH INTERNATIONAL 2011; 2011:652147. [PMID: 22007309 PMCID: PMC3189463 DOI: 10.4061/2011/652147] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 08/04/2011] [Accepted: 08/10/2011] [Indexed: 12/11/2022]
Abstract
Recombinant antibody phage display technology is a vital tool that facilitates identification of specific binding molecules to a target enabling the rapid generation and selection of high affinity, fully human, or mouse antibody product candidates essentially directed towards disease target appropriate for antibody therapy. In this study, a recombinant single-chain Fv antibody fragment (scFv) A11 was isolated from immune spleen cells obtained from mice immunized with inactivated rabies virus (Pasteur strain) using standard methodology and was characterized for its specificity towards the rabies virus glycoprotein. Epitope mapping using peptide libraries and truncated glycoprotein polypeptides suggested that A11 bound to the antigenic site II of rabies glycoprotein against which a majority of rabies virus neutralizing antibodies are directed. The use of the above technology could, therefore, allow development of scFvs with different specificities against the rabies glycoprotein as an alternative to the more cumbersome protocols used for the development of monoclonal antibodies.
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Affiliation(s)
- Shukra M Aavula
- Research and Development Center, Indian Immunologicals Limited, Rakshapuram, Gachibowli, Hyderabad 500032, India
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18
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Cai K, Feng JN, Wang Q, Li T, Shi J, Hou XJ, Gao X, Liu H, Tu W, Xiao L, Wang H. Fine mapping and interaction analysis of a linear rabies virus neutralizing epitope. Microbes Infect 2010; 12:948-55. [PMID: 20601078 DOI: 10.1016/j.micinf.2010.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Revised: 06/14/2010] [Accepted: 06/17/2010] [Indexed: 10/19/2022]
Abstract
A novel human antibody AR16, targeting the G5 linear epitope of rabies virus glycoprotein (RVG) was shown to have promising antivirus potency. Using AR16, the minimal binding region within G5 was identified as HDFR (residues 261-264), with key residues HDF (residues 261-263) identified by alanine replacement scanning. The key HDF was highly conserved within phylogroup I Lyssaviruses but not those in phylogroup II. Using computer-aided docking and interaction models, not only the key residues (Asp30, Asp31, Tyr32, Trp53, Asn54, Glu99, Ile101, and Trp166) of AR16 that participated in the interaction with G5 were identified, the van der Waals forces that mediated the epitope-antibody interaction were also revealed. Seven out of eight presumed key residues (Asp30, Asp31, Tyr32, Trp53, Asn54, Glu99, and Ile101) were located at the variable regions of AR16 heavy chains. A novel mAb cocktail containing AR16 and CR57, has the potential to recognize non-overlapping, non-competing epitopes, and neutralize a broad range of rabies virus.
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Affiliation(s)
- Kun Cai
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, No. 20 Dongdajie, Fengtai District, Beijing 100071, China
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19
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Houimel M, Dellagi K. Peptide mimotopes of rabies virus glycoprotein with immunogenic activity. Vaccine 2009; 27:4648-55. [DOI: 10.1016/j.vaccine.2009.05.055] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Revised: 05/12/2009] [Accepted: 05/21/2009] [Indexed: 12/23/2022]
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20
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Bassi ÊJ, Vernal J, Zanluca C, Terenzi H, Zanetti CR. Expression, purification and immunodetection of a recombinant fragment (residues 179–281) of the G protein from rabies virus ERA strain. Protein Expr Purif 2008; 59:309-13. [DOI: 10.1016/j.pep.2008.02.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2007] [Revised: 02/25/2008] [Accepted: 02/27/2008] [Indexed: 11/30/2022]
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21
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Meng SL, Yan JX, Xu GL, Nadin-Davis SA, Ming PG, Liu SY, Wu J, Ming HT, Zhu FC, Zhou DJ, Xiao QY, Dong GM, Yang XM. A molecular epidemiological study targeting the glycoprotein gene of rabies virus isolates from China. Virus Res 2006; 124:125-38. [PMID: 17129631 DOI: 10.1016/j.virusres.2006.10.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2006] [Revised: 10/10/2006] [Accepted: 10/20/2006] [Indexed: 11/29/2022]
Abstract
A group of 31 rabies viruses (RABVs), recovered primarily from dogs, one deer and one human case, were collected from various areas in China between 1989 and 2006. Complete G gene sequences determined for these isolates indicated identities of nucleotide and amino acid sequences of >or=87% and 93.8%, respectively. Phylogenetic analysis of these and some additional Chinese isolates clearly supported the placement of all Chinese viruses in Lyssavirus genotype 1 and divided all Chinese isolates between four distinct groups (I-IV). Several variants identified within the most commonly encountered group I were distributed according to their geographical origins. A comparison of representative Chinese viruses with other isolates retrieved world-wide indicated a close evolutionary relationship between China group I and II viruses and those of Indonesia while China group III viruses formed an outlying branch to variants from Malaysia and Thailand. China group IV viruses were closely related to several vaccine strains. The predicted glycoprotein sequences of these RABVs variants are presented and discussed with respect to the utility of the anti-rabies biologicals currently employed in China.
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Affiliation(s)
- Sheng-Li Meng
- Wuhan Institute of Biological Products, Wuhan 430060, China
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22
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Motoi Y, Sato K, Hatta H, Morimoto K, Inoue S, Yamada A. Production of rabies neutralizing antibody in hen's eggs using a part of the G protein expressed in Escherichia coli. Vaccine 2005; 23:3026-32. [PMID: 15811649 DOI: 10.1016/j.vaccine.2004.11.071] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2004] [Revised: 11/04/2004] [Accepted: 11/30/2004] [Indexed: 10/25/2022]
Abstract
In an attempt to produce anti-rabies immunoglobulin affordable for people living in developing countries, we have immunized layer chickens with a part of the G protein of rabies virus expressed in Escherichia coli. Immunoglobulin (IgY) was purified from the yolks of eggs layed by immunized hens. It was revealed in vitro that the antibody specifically bound to virions as well as cells infected with rabies virus. Moreover, the antibody apparently neutralized rabies virus infectivity. Inoculation of the antibody into mice infected with rabies virus reduced the mortality caused by the virus, suggesting that IgY directed to the part of the G protein expressed in E. coli could serve as a possible alternative to currently available anti-rabies human or equine immunoglobulins.
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Affiliation(s)
- Yurie Motoi
- The United Graduate School of Veterinary Science, Gifu University, 501-1193 Yanagido 1-1, Gifu, Japan
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23
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Marissen WE, Kramer RA, Rice A, Weldon WC, Niezgoda M, Faber M, Slootstra JW, Meloen RH, Clijsters-van der Horst M, Visser TJ, Jongeneelen M, Thijsse S, Throsby M, de Kruif J, Rupprecht CE, Dietzschold B, Goudsmit J, Bakker ABH. Novel rabies virus-neutralizing epitope recognized by human monoclonal antibody: fine mapping and escape mutant analysis. J Virol 2005; 79:4672-8. [PMID: 15795253 PMCID: PMC1069557 DOI: 10.1128/jvi.79.8.4672-4678.2005] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Anti-rabies virus immunoglobulin combined with rabies vaccine protects humans from lethal rabies infections. For cost and safety reasons, replacement of the human or equine polyclonal immunoglobulin is advocated, and the use of rabies virus-specific monoclonal antibodies (MAbs) is recommended. We produced two previously described potent rabies virus-neutralizing human MAbs, CR57 and CRJB, in human PER.C6 cells. The two MAbs competed for binding to rabies virus glycoprotein. Using CR57 and a set of 15-mer overlapping peptides covering the glycoprotein ectodomain, a neutralization domain was identified between amino acids (aa) 218 and 240. The minimal binding region was identified as KLCGVL (aa 226 to 231), with key residues K-CGV- identified by alanine replacement scanning. The critical binding region of this novel nonconformational rabies virus epitope is highly conserved within rabies viruses of genotype 1. Subsequently, we generated six rabies virus variants escaping neutralization by CR57 and six variants escaping CRJB. The CR57 escape mutants were only partially covered by CRJB, and all CRJB-resistant variants completely escaped neutralization by CR57. Without exception, the CR57-resistant variants showed a mutation at key residues within the defined minimal binding region, while the CRJB escape viruses showed a single mutation distant from the CR57 epitope (N182D) combined with mutations in the CR57 epitope. The competition between CR57 and CRJB, the in vitro escape profile, and the apparent overlap between the recognized epitopes argues against including both CR57 and CRJB in a MAb cocktail aimed at replacing classical immunoglobulin preparations.
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Affiliation(s)
- Wilfred E Marissen
- Crucell Holland BV, Archimedesweg 4, P.O. Box 20482301, CA Leiden, The Netherlands
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24
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Mansfield KL, Johnson N, Fooks AR. Identification of a conserved linear epitope at the N terminus of the rabies virus glycoprotein. J Gen Virol 2004; 85:3279-3283. [PMID: 15483241 DOI: 10.1099/vir.0.80362-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel, linear B-cell epitope has been identified at the N terminus of the rabies virus (RABV) glycoprotein. Screening of a phage-display library demonstrated that two glycoprotein-specific mAbs recognized a conserved sequence, WxxxDI, which aligned between aa 14 and 19 of the mature glycoprotein. Screening of truncated glycoprotein fragments with both mAbs confirmed the location of the epitope in the N-terminal region. Alignment of amino acid sequences from a range of RABV isolates indicated that the site was conserved in most viruses. Alignment with representatives of other lyssaviruses suggested that it is conserved within phylogroup I, which includes the European bat lyssaviruses, but not phylogroup II. A 12 aa synthetic peptide of this epitope was recognized by both mAbs and sera from a subset of rabies-vaccinated dogs. In a multimeric form, the peptide could induce an epitope-specific response following immunization in rabbits and mice.
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Affiliation(s)
- K L Mansfield
- Rabies Research and Diagnostic Group (WHO Collaborating Centre), Veterinary Laboratories Agency-Weybridge, Woodham Lane, New Haw, Surrey, KT15 3NB, UK
| | - N Johnson
- Rabies Research and Diagnostic Group (WHO Collaborating Centre), Veterinary Laboratories Agency-Weybridge, Woodham Lane, New Haw, Surrey, KT15 3NB, UK
| | - A R Fooks
- Rabies Research and Diagnostic Group (WHO Collaborating Centre), Veterinary Laboratories Agency-Weybridge, Woodham Lane, New Haw, Surrey, KT15 3NB, UK
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25
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Préhaud C, Lay S, Dietzschold B, Lafon M. Glycoprotein of nonpathogenic rabies viruses is a key determinant of human cell apoptosis. J Virol 2003; 77:10537-47. [PMID: 12970438 PMCID: PMC228383 DOI: 10.1128/jvi.77.19.10537-10547.2003] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2003] [Accepted: 06/20/2003] [Indexed: 01/12/2023] Open
Abstract
We showed that, unlike pathogenic rabies virus (RV) strain CVS, attenuated RV strain ERA triggers the caspase-dependent apoptosis of human cells. Furthermore, we observed that the induction of apoptosis is correlated with a particular virus antigen distribution: the overexpression of the viral G protein on the cell surface, with continuous localization on the cytoplasmic membrane, and large cytoplasmic inclusions of the N protein. To determine whether one of these two major RV proteins (G and N proteins) triggers apoptosis, we constructed transgenic Jurkat T-cell lines that drive tetracycline-inducible gene expression to produce the G and N proteins of ERA and CVS individually. The induction of ERA G protein (G-ERA) expression but not of ERA N protein expression resulted in apoptosis, and G-ERA was more efficient at triggering apoptosis than was CVS G protein. To test whether other viral proteins participated in the induction of apoptosis, human cells were infected with recombinant RV in which the G protein gene from the attenuated strain had been replaced by its virulent strain counterpart (CVS). Only RV containing the G protein from the nonpathogenic RV strain was able to trigger the apoptosis of human cells. Thus, the ability of RV strains to induce apoptosis is largely determined by the viral G protein.
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Affiliation(s)
- Christophe Préhaud
- Unité de Neuroimmunologie Virale, Département de Neuroscience, Institut Pasteur, Paris, France
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26
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Johnson N, Mansfield KL, Fooks AR. Canine vaccine recipients recognize an immunodominant region of the rabies virus glycoprotein. J Gen Virol 2002; 83:2663-2669. [PMID: 12388801 DOI: 10.1099/0022-1317-83-11-2663] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
To investigate the immune response to anti-rabies vaccination in the principal recipient (the domestic dog), four truncated fragments of the rabies virus glycoprotein were expressed as glutathione S-transferase fusion proteins. Immune sera from vaccinated rabbits and dogs were then used to probe for reactivity with these expressed proteins. In two rabbits and four dogs tested, the dominant antibody response to non-conformational antigenic sites appeared to be directed to a region of the glycoprotein between amino acids 222 and 332. The N-terminal fragment of the glycoprotein was also significantly antigenic. Further studies to assess whether the antibody response to the internal domain could neutralize the rabies Challenge Virus Standard (CVS) strain, using antibody depletion, suggested that this fraction did contribute to the ability of post-vaccination sera to neutralize and therefore protect against infection.
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Affiliation(s)
- N Johnson
- Rabies Research and Diagnostic Group, Veterinary Laboratories Agency, Weybridge, Addlestone, Surrey KT15 3NB, UK1
| | - K L Mansfield
- Rabies Research and Diagnostic Group, Veterinary Laboratories Agency, Weybridge, Addlestone, Surrey KT15 3NB, UK1
| | - A R Fooks
- Rabies Research and Diagnostic Group, Veterinary Laboratories Agency, Weybridge, Addlestone, Surrey KT15 3NB, UK1
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27
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Goto H, Minamoto N, Ito H, Ito N, Sugiyama M, Kinjo T, Kawai A. Mapping of epitopes and structural analysis of antigenic sites in the nucleoprotein of rabies virus. J Gen Virol 2000; 81:119-27. [PMID: 10640549 DOI: 10.1099/0022-1317-81-1-119] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Linear epitopes on the rabies virus nucleoprotein (N) recognized by six MAbs raised against antigenic sites I (MAbs 6-4, 12-2 and 13-27) and IV (MAbs 6-9, 7-12 and 8-1) were investigated. Based on our previous studies on sites I and IV, 24 consecutively overlapping octapeptides and N- and C-terminal-deleted mutant N proteins were prepared. Results showed that all three site I epitopes studied and two site IV epitopes (for MAbs 8-1 and 6-9) mapped to aa 358-367, and that the other site IV epitope of MAb 7-12 mapped to aa 375-383. Tests using chimeric and truncated proteins showed that MAb 8-1 also requires the N-terminal sequence of the N protein to recognize its binding region more efficiently. Immunofluorescence studies demonstrated that all three site I-specific MAbs and one site IV-specific MAb (7-12) stained the N antigen that was diffusely distributed in the whole cytoplasm; the other two site IV-specific MAbs (6-9 and 8-1) detected only the N antigen in the cytoplasmic inclusion bodies (CIB). An antigenic site II-specific MAb (6-17) also detected CIB-associated N antigen alone. Furthermore, the level of diffuse N antigens decreased after treatment of infected cells with cycloheximide. These results suggest that epitopes at site I are expressed on the immature form of the N protein, but epitope structures of site IV MAbs 6-9 and 8-1 are created and/or exposed only after maturation of the N protein.
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Affiliation(s)
- H Goto
- Department of Veterinary Public Health, Faculty of Agriculture, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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