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Chesnais M, Bujaki E, Filhol T, Caval V, Joffret ML, Martin J, Jouvenet N, Bessaud M. Opening a 60-year time capsule: sequences of historical poliovirus cold variants shed a new light on a contemporary strain. Virus Evol 2024; 10:veae063. [PMID: 39170726 PMCID: PMC11336667 DOI: 10.1093/ve/veae063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/12/2024] [Accepted: 07/26/2024] [Indexed: 08/23/2024] Open
Abstract
Polioviruses (PVs) are positive strand RNA viruses responsible for poliomyelitis. Many PVs have been isolated and phenotypically characterized in the 1940s-50s for the purpose of identifying attenuated strains that could be used as vaccine strains. Among these historical PVs, only few are genetically characterized. We report here the sequencing of four PV strains stored for more than 60 years in a sealed box. These PVs are cold variants that were selected by Albert Sabin based on their capacity to multiply at relatively low temperatures. Inoculation of permissive cells at 25°C showed that two of the four historical virus stocks still contained infectious particles. Both viruses reached titres that were higher at 25°C than at 37°C, thus demonstrating that they were genuine cold variants. We obtained sequences that span virtually all the genome for three out of the four strains; a short sequence that partly covers the 5' untranslated region was recovered for the last one. Unexpectedly, the genome of one historical cold variant (which derives from PV-3 Glenn) displayed a very high nucleotide identity (above 95%) with that of a PV strain (PV-3 strain WIV14) sampled in China in 2014 and then classified as a highly evolved vaccine-derived PV. Our analyses made this hypothesis very unlikely and strongly suggested that Glenn and WIV14 shared a very recent common ancestor with one another. Some strains used to produce the inactivated polio vaccine were also very close to Glenn and WIV14 in the capsid-encoding region, but they had not been sequenced beyond the capsid. We therefore sequenced one of these strains, Saukett A, which was available in our collection. Saukett A and WIV14 featured an identity higher than 99% at the nucleotide level. This work provides original data on cold variants that were produced and studied decades ago. It also highlights that sequences of historical PV strains could be crucial to reliably characterize contemporary PVs in case of release from a natural reservoir or from a facility, which is of highest importance for the PV eradication program.
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Affiliation(s)
- Morgane Chesnais
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Virus sensing and signaling Unit, 28 rue du Dr Roux, Paris 75 015, France
- Laboratoire associé au Centre national de référence pour les entérovirus & paréchovirus, 28 rue du Dr Roux, Paris 75 015, France
| | - Erika Bujaki
- Division of Vaccines, National Institute for Biological Standards and Control, Medicines and Healthcare products Regulatory Agency, Blanche Lane, South Mimms, Potters Bar, Hertfordshire EN6 3QG, United Kingdom
| | - Typhaine Filhol
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Virus sensing and signaling Unit, 28 rue du Dr Roux, Paris 75 015, France
| | - Vincent Caval
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Virus sensing and signaling Unit, 28 rue du Dr Roux, Paris 75 015, France
| | - Marie-Line Joffret
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Virus sensing and signaling Unit, 28 rue du Dr Roux, Paris 75 015, France
- Laboratoire associé au Centre national de référence pour les entérovirus & paréchovirus, 28 rue du Dr Roux, Paris 75 015, France
| | - Javier Martin
- Division of Vaccines, National Institute for Biological Standards and Control, Medicines and Healthcare products Regulatory Agency, Blanche Lane, South Mimms, Potters Bar, Hertfordshire EN6 3QG, United Kingdom
| | - Nolwenn Jouvenet
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Virus sensing and signaling Unit, 28 rue du Dr Roux, Paris 75 015, France
| | - Maël Bessaud
- Institut Pasteur, Université de Paris Cité, CNRS UMR 3569, Virus sensing and signaling Unit, 28 rue du Dr Roux, Paris 75 015, France
- Laboratoire associé au Centre national de référence pour les entérovirus & paréchovirus, 28 rue du Dr Roux, Paris 75 015, France
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2
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Guo Q, Zhu S, Wang D, Li X, Zhu H, Song Y, Liu X, Xiao F, Zhao H, Lu H, Xiao J, Yu L, Wang W, He Y, Liu Y, Li J, Zhang Y, Xu W, Yan D. Genetic characterization and molecular evolution of type 3 vaccine-derived polioviruses from an immunodeficient patient in China. Virus Res 2023; 334:199177. [PMID: 37479187 PMCID: PMC10388201 DOI: 10.1016/j.virusres.2023.199177] [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: 03/17/2023] [Revised: 07/06/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
In 2013, a case of immunodeficiency vaccine-derived poliovirus (iVDPV) was identified in Jiangxi Province, China. In this study, we purified 14 type 3 original viral isolates from this case and characterized the molecular evolution of these iVDPVs for 298 days. Genetic variants were found in most of the original viral isolates, with complex genetic and evolutionary relationships among the variants. A phylogenetic tree constructed based on the P1 region showed that these iVDPVs were classified into lineage A and B. The dominant lineage B represents a major trend in virus evolution. The nucleotide substitution rate at the third codon position (3CP) estimated by the BEAST program was 1.76 × 10-2 substitutions/site/year (95% HPD: 1.23-2.39 × 10-2). The initial OPV dose was given dating back to March 2013, which was close to the time of the last OPV vaccination, suggesting that OPV infection may have originated with the last dose of vaccine. Recombinant analysis showed that these iVDPVs were inter-vaccine recombinants with two recombination patterns, S3/S2/S1 and S3/S2/S3/S2/S1. Whole genome sequence analysis revealed that key nucleotide sites (C472U, C2034U, U2493C) associated with the attenuated phenotype of Sabin 3 have been replaced. Temperature sensitivity test showed that all tested strains were temperature-sensitive, except for the variant Day11-5. Interestingly, we observed that the variant Day11-5 temperature resistance properties may be associated with the Lys to Met substitution at the VP2-162 site. Serological test and whole genome sequence analysis showed that the seropositivity rate remained high, and mutations in the antigenic sites did not significantly alter neutralization ability.
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Affiliation(s)
- Qin Guo
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China; Da Zhou Vocational College of Chinese Medicine, Dazhou, China
| | - Shuangli Zhu
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Dongyan Wang
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Xiaolei Li
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Hui Zhu
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Yang Song
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Xiaoqing Liu
- Jiangxi Center for Disease Control and Prevention, Nanchang, China
| | - Fang Xiao
- Jiangxi Center for Disease Control and Prevention, Nanchang, China
| | - Hehe Zhao
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Huanhuan Lu
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Jinbo Xiao
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Liheng Yu
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Wenhui Wang
- School of Public Health and Management, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, China
| | - Yun He
- School of Public Health and Management, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, China
| | - Ying Liu
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Jichen Li
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Yong Zhang
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Wenbo Xu
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Dongmei Yan
- National Polio Laboratory, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosecurity, National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China.
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3
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Fan Q, Ma J, Li X, Jorba J, Yuan F, Zhu H, Hu L, Song Y, Wang D, Zhu S, Yan D, Chen H, Xu W, Zhang Y. Molecular evolution and antigenic drift of type 3 iVDPVs excreted from a patient with immunodeficiency in Ningxia, China. J Med Virol 2023; 95:e28215. [PMID: 36224711 DOI: 10.1002/jmv.28215] [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: 05/29/2022] [Revised: 09/28/2022] [Accepted: 10/11/2022] [Indexed: 01/11/2023]
Abstract
A 2.5-year-old pediatric patient with acute flaccid paralysis was diagnosed with primary immunodeficiency (PID) in Ningxia Province, China, in 2011. Twelve consecutive stool specimens were collected from the patient over a period of 10 months (18 February 2011 to 20 November 2011), and 12 immunodeficiency vaccine-derived poliovirus (iVDPV) strains (CHN15017-1 to CHN15017-12) were subsequently isolated. Nucleotide sequencing analysis of the plaque-purified iVDPVs revealed 2%-3.5% VP1-region differences from their parental Sabin 3 strain. Full-length genome sequencing showed they were all Sabin 3/Sabin 1 recombinants, sharing a common 2C-region crossover site, and the two key determinants of attenuation (U472C in the 5' untranslated region and T2493C in the VP1 region) had reverted. Temperature-sensitive experiments demonstrated that the first two iVDPV strains partially retained the temperature-sensitive phenotype's nature, while the subsequent ten iVDPV strains distinctly lost it, possibly associated with increased neurovirulence. Nineteen amino-acid substitutions were detected between 12 iVDPVs and the parental Sabin strain, of which only one (K1419R) was found on the subsequent 10 iVDPV isolates, suggesting this site's potential as a temperature-sensitive determination site. A Bayesian Monte Carlo Markov Chain phylogenetic analysis based on the P1 coding region yielded a mean iVDPV evolutionary rate of 1.02 × 10-2 total substitutions/site/year, and the initial oral-polio-vaccine dose was presumably administered around June 2009. Our findings provide valuable information regarding the genetic structure, high-temperature growth sensitivity, and antigenic properties of iVDPVs following long-term evolution in a single PID patient, thus augmenting the currently limited knowledge regarding the dynamic changes and evolutionary pathway of iVDPV populations with PID during long-term global replication.
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Affiliation(s)
- Qin Fan
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.,Department of HIV/AIDS Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, People's Republic of China
| | - Jiangtao Ma
- Ningxia Hui Autonomous Region Center for Disease Control and Prevention, Yinchuan City, Ningxia Hui Autonomous Region, Yinchuan, People's Republic of China
| | - Xiaolei Li
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Jaume Jorba
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Fang Yuan
- Ningxia Hui Autonomous Region Center for Disease Control and Prevention, Yinchuan City, Ningxia Hui Autonomous Region, Yinchuan, People's Republic of China
| | - Hui Zhu
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Lan Hu
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Yang Song
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Dongyan Wang
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Shuangli Zhu
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Dongmei Yan
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Hui Chen
- Ningxia Hui Autonomous Region Center for Disease Control and Prevention, Yinchuan City, Ningxia Hui Autonomous Region, Yinchuan, People's Republic of China
| | - Wenbo Xu
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.,Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Yong Zhang
- National Laboratory for poliomyelitis, WHO WPRO Regional Polio Reference Laboratory, National Health Commission Key Laboratory for Biosafety and National Health Commission Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.,Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, People's Republic of China
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4
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Zhang M, Xu D, Feng C, Guo W, Fei C, Sun H, Yang Z, Ma S. Isolation and characterization of a novel clade of coxsackievirus B2 associated with hand, foot, and mouth disease in Southwest China. J Med Virol 2022; 94:2598-2606. [PMID: 35149996 DOI: 10.1002/jmv.27657] [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: 06/16/2021] [Revised: 01/26/2022] [Accepted: 02/08/2022] [Indexed: 11/08/2022]
Abstract
Coxsackievirus B2 (CVB2) is an enterovirus B (EV-B) species and can cause aseptic meningitis, myocarditis and hand, foot, and mouth disease (HFMD). We characterized a novel CVB2 (YN31V3) associated with HFMD in Yunnan, Southwest China in 2019. Although YN31V3 and other Mainland China epidemic strains mainly belonged to genotype C, YN31V3 formed an independent branch. The genome sequence of the strain YN31V3 from this study showed 12.91% nucleotide difference to its closest strain RW41-2/YN/CHN/2012. Recombination analyses showed that the newly isolated YN31V3 was probably a recombinant, which was closely related to CVB2 strains in the genomic P1 region and other EV-B strains in the P2 and P3 regions, respectively. YN31V3 strain had a temperature-sensitive phenotype. Challenge of suckling BALB/c mice with YN31V3 could cause symptoms of disease and severe pathological lesions. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ming Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
| | - Danhan Xu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
| | - Changzeng Feng
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
| | - Wei Guo
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
| | - Chengrui Fei
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
| | - Hao Sun
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
| | - Zhaoqing Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
| | - Shaohui Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College, Kunming, 650118, PR China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, PR China
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5
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Korotkova EA, Prostova MA, Gmyl AP, Kozlovskaya LI, Eremeeva TP, Baikova OY, Krasota AY, Morozova NS, Ivanova OE. Case of Poliomyelitis Caused by Significantly Diverged Derivative of the Poliovirus Type 3 Vaccine Sabin Strain Circulating in the Orphanage. Viruses 2020; 12:E970. [PMID: 32883046 PMCID: PMC7552002 DOI: 10.3390/v12090970] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 12/26/2022] Open
Abstract
Significantly divergent polioviruses (VDPV) derived from the oral poliovirus vaccine (OPV) from Sabin strains, like wild polioviruses, are capable of prolonged transmission and neuropathology. This is mainly shown for VDPV type 2. Here we describe a molecular-epidemiological investigation of a case of VDPV type 3 circulation leading to paralytic poliomyelitis in a child in an orphanage, where OPV has not been used. Samples of feces and blood serum from the patient and 52 contacts from the same orphanage were collected twice and investigated. The complete genome sequencing was performed for five polioviruses isolated from the patient and three contact children. The level of divergence of the genomes of the isolates corresponded to approximately 9-10 months of evolution. The presence of 61 common substitutions in all isolates indicated a common intermediate progenitor. The possibility of VDPV3 transmission from the excretor to susceptible recipients (unvaccinated against polio or vaccinated with inactivated poliovirus vaccine, IPV) with subsequent circulation in a closed children's group was demonstrated. The study of the blood sera of orphanage residents at least twice vaccinated with IPV revealed the absence of neutralizing antibodies against at least two poliovirus serotypes in almost 20% of children. Therefore, a complete rejection of OPV vaccination can lead to a critical decrease in collective immunity level. The development of new poliovirus vaccines that create mucosal immunity for the adequate replacement of OPV from Sabin strains is necessary.
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Affiliation(s)
- Ekaterina A. Korotkova
- Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119899 Moscow, Russia;
| | - Maria A. Prostova
- Federal State Budgetary Scientific Institution “Chumakov Federal Scientific Centre for Research and Development of Immune-and-Biological Products of the Russian Academy of Sciences” (FSBSI “Chumakov FSC R&D IBP RAS”), 108819 Moscow, Russia; (M.A.P.); (L.I.K.); (T.P.E.); (O.Y.B.)
| | - Anatoly P. Gmyl
- Federal State Budgetary Scientific Institution “Chumakov Federal Scientific Centre for Research and Development of Immune-and-Biological Products of the Russian Academy of Sciences” (FSBSI “Chumakov FSC R&D IBP RAS”), 108819 Moscow, Russia; (M.A.P.); (L.I.K.); (T.P.E.); (O.Y.B.)
- Institute for Bionic Technologies and Engineering, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
| | - Liubov I. Kozlovskaya
- Federal State Budgetary Scientific Institution “Chumakov Federal Scientific Centre for Research and Development of Immune-and-Biological Products of the Russian Academy of Sciences” (FSBSI “Chumakov FSC R&D IBP RAS”), 108819 Moscow, Russia; (M.A.P.); (L.I.K.); (T.P.E.); (O.Y.B.)
- Institute for Bionic Technologies and Engineering, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
| | - Tatiana P. Eremeeva
- Federal State Budgetary Scientific Institution “Chumakov Federal Scientific Centre for Research and Development of Immune-and-Biological Products of the Russian Academy of Sciences” (FSBSI “Chumakov FSC R&D IBP RAS”), 108819 Moscow, Russia; (M.A.P.); (L.I.K.); (T.P.E.); (O.Y.B.)
| | - Olga Y. Baikova
- Federal State Budgetary Scientific Institution “Chumakov Federal Scientific Centre for Research and Development of Immune-and-Biological Products of the Russian Academy of Sciences” (FSBSI “Chumakov FSC R&D IBP RAS”), 108819 Moscow, Russia; (M.A.P.); (L.I.K.); (T.P.E.); (O.Y.B.)
| | - Alexandr Y. Krasota
- Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119899 Moscow, Russia;
- Federal State Budgetary Scientific Institution “Chumakov Federal Scientific Centre for Research and Development of Immune-and-Biological Products of the Russian Academy of Sciences” (FSBSI “Chumakov FSC R&D IBP RAS”), 108819 Moscow, Russia; (M.A.P.); (L.I.K.); (T.P.E.); (O.Y.B.)
| | - Nadezhda S. Morozova
- Federal Centre of Hygiene and Epidemiology, Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 117105 Moscow, Russia;
| | - Olga E. Ivanova
- Federal State Budgetary Scientific Institution “Chumakov Federal Scientific Centre for Research and Development of Immune-and-Biological Products of the Russian Academy of Sciences” (FSBSI “Chumakov FSC R&D IBP RAS”), 108819 Moscow, Russia; (M.A.P.); (L.I.K.); (T.P.E.); (O.Y.B.)
- Institute for Bionic Technologies and Engineering, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
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6
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Fox H, Knowlson S, Minor PD, Macadam AJ. Genetically Thermo-Stabilised, Immunogenic Poliovirus Empty Capsids; a Strategy for Non-replicating Vaccines. PLoS Pathog 2017; 13:e1006117. [PMID: 28103317 PMCID: PMC5245777 DOI: 10.1371/journal.ppat.1006117] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 12/10/2016] [Indexed: 01/13/2023] Open
Abstract
While wild type polio has been nearly eradicated there will be a need to continue immunisation programmes for some time because of the possibility of re-emergence and the existence of long term excreters of poliovirus. All vaccines in current use depend on growth of virus and most of the non-replicating (inactivated) vaccines involve wild type viruses known to cause poliomyelitis. The attenuated vaccine strains involved in the eradication programme have been used to develop new inactivated vaccines as production is thought safer. However it is known that the Sabin vaccine strains are genetically unstable and can revert to a virulent transmissible form. A possible solution to the need for virus growth would be to generate empty viral capsids by recombinant technology, but hitherto such particles are so unstable as to be unusable. We report here the genetic manipulation of the virus to generate stable empty capsids for all three serotypes. The particles are shown to be extremely stable and to generate high levels of protective antibodies in animal models. There is a need for safe production of polio vaccines as eradication is approached. Empty capsids in a native conformation are produced by poliovirus and other picornaviruses seemingly as a necessary part of the assembly process, possibly to provide a reservoir of subunits in a form that is resistant to cellular pathways that target unfolded or hydrophobic motifs for proteolytic degradation. Normally they are not very stable prior to genome encapsidation but more stable forms, if they existed, could potentially be useful as vaccines. Genetic variants that increase empty capsid stability have been identified and by artificially combining several in one sequence the evolutionary constraints have been bypassed, with the resulting stable empty capsids representing essentially dead-end products. They induce antibody efficiently and are stable on storage. Empty capsids can be produced by recombinant expression which, if it were efficient enough, could provide a source of immunogenic particles suitable for use as vaccines without the need for live virus at any stage of production. This would be ideal for a post-eradication world.
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Affiliation(s)
- Helen Fox
- Division of Virology, National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, United Kingdom
| | - Sarah Knowlson
- Division of Virology, National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, United Kingdom
| | - Philip D. Minor
- Division of Virology, National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, United Kingdom
| | - Andrew J. Macadam
- Division of Virology, National Institute for Biological Standards and Control, Potters Bar, Hertfordshire, United Kingdom
- * E-mail:
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7
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Liu J, Zhang H, Zhao Y, Xia L, Guo C, Yang H, Luo N, He Z, Ma S. Characterization of four vaccine-related polioviruses including two intertypic type 3/type 2 recombinants associated with aseptic encephalitis. Virol J 2016; 13:162. [PMID: 27677968 PMCID: PMC5039789 DOI: 10.1186/s12985-016-0615-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/14/2016] [Indexed: 11/17/2022] Open
Abstract
Background Four vaccine-related polioviruses (VRPV) were isolated from aseptic encephalitis cases in Yunnan, China in 2010. The genomic sequences of these VRPVs were investigated to gain a better understanding of their molecular characteristics. Methods Molecular typing was performed by amplification and sequencing of the VP1 region. The genomic sequences of the four VRPV3 strains were compared to vaccine strain and wild strain sequences to study genetic drift and recombination. Results All four isolates could be entirely neutralized by polyclonal poliovirus 3 (PV3) antisera but not by PV1 and PV2 antisera and displayed a temperature-sensitive phenotype. The genomic sequences of all four isolates contained two Sabin 3-specific attenuating mutations at nucleotides 472(C → T) and 2034(C → T), but a third Sabin 3-specific attenuating mutation at position 2493 (T → C) had reverted back to a T. Recombination analyses showed RF108/YN/CHN/2010 and RF134/YN/CHN/2010 strain recombined with Sabin 2 at the 3′-end of the 2C to 3′-untranslated region (3′-UTR) and at the 5′-end of the 3D to 3′-UTR, respectively. Conclusion Four VRPV3 strains including two type 3/type 2 intertypic recombinants were identified. The recombination of Sabin vaccine strains with other Sabin serotypes or human enterovirus C species could be a critical factor in the potential of emerging viruses and related disease outbreaks. Therefore, it is essential to be persistent in the surveillance of EVs (including PV). Electronic supplementary material The online version of this article (doi:10.1186/s12985-016-0615-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jiansheng Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China
| | - Haihao Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China
| | - Yilin Zhao
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China
| | - Longhui Xia
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China
| | - Chen Guo
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China
| | - Huai Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China
| | - Na Luo
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China.,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China
| | - Zhanlong He
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China. .,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China.
| | - Shaohui Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences, and Peking Union Medical College (CAMS & PUMC), 935 Jiao Ling Road, Kunming, Yunnan Province, 650118, People's Republic of China. .,Yunnan Key Laboratory of Vaccine Research Development on Severe Infectious Disease, Kunming, 650118, People's Republic of China.
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8
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Liu F, Wu X, Li L, Zou Y, Liu S, Wang Z. Evolutionary characteristics of morbilliviruses during serial passages in vitro: Gradual attenuation of virus virulence. Comp Immunol Microbiol Infect Dis 2016; 47:7-18. [DOI: 10.1016/j.cimid.2016.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 05/22/2016] [Accepted: 05/24/2016] [Indexed: 02/05/2023]
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9
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Cassemiro KMSM, Burlandy FM, da Silva EE. Rare natural type 3/type 2 intertypic capsid recombinant vaccine-related poliovirus isolated from a case of acute flaccid paralysis in Brazil, 2015. J Gen Virol 2016; 97:1545-1550. [PMID: 27082658 DOI: 10.1099/jgv.0.000484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A natural type 3/type 2 intertypic capsid recombinant vaccine-related poliovirus was isolated from an acute flaccid paralytic case in Brazil. Genome sequencing revealed the uncommon location of the crossover site in the VP1 coding region (nucleotides 3251-3258 of Sabin 3 genome). The Sabin 2 donor sequence replaced the last 118 nt of VP1, resulting in the substitution of the complete antigenic site IIIa by PV2-specific amino acids. The low overall number of nucleotide substitutions in P1 region indicated that the predicted replication time of the isolate was about 8-9 weeks. Two of the principal determinants of attenuation in Sabin 3 genomes were mutated (U472C and C2493U), but the temperature-sensitive phenotype of the isolate was preserved. Our results support the theory that there exists a PV3/PV2 recombination hotspot site in the tail region of the VP1 capsid protein and that the recombination may occur soon after oral poliovirus vaccine administration.
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Affiliation(s)
- Klécia M S M Cassemiro
- Enterovirus Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Fernanda M Burlandy
- Enterovirus Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Edson E da Silva
- Enterovirus Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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10
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Nishiyama S, Ikegami T. Temperature-sensitive mutations for live-attenuated Rift Valley fever vaccines: implications from other RNA viruses. Front Microbiol 2015; 6:787. [PMID: 26322023 PMCID: PMC4531298 DOI: 10.3389/fmicb.2015.00787] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 07/20/2015] [Indexed: 11/13/2022] Open
Abstract
Rift Valley fever (RVF) is a mosquito-borne zoonotic disease endemic to the African continent. RVF is characterized by high rate of abortions in ruminants and hemorrhagic fever, encephalitis, or blindness in humans. RVF is caused by the Rift Valley fever virus (RVFV: genus Phlebovirus, family Bunyaviridae). Vaccination is the only known effective strategy to prevent the disease, but there are no licensed RVF vaccines available for humans. A live-attenuated vaccine candidate derived from the wild-type pathogenic Egyptian ZH548 strain, MP-12, has been conditionally licensed for veterinary use in the U.S. MP-12 displays a temperature-sensitive (ts) phenotype and does not replicate at 41°C. The ts mutation limits viral replication at a specific body temperature and may lead to an attenuation of the virus. Here we will review well-characterized ts mutations for RNA viruses, and further discuss the potential in designing novel live-attenuated vaccines for RVF.
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Affiliation(s)
- Shoko Nishiyama
- Department of Pathology, The University of Texas Medical Branch at Galveston, Galveston, TX USA
| | - Tetsuro Ikegami
- Department of Pathology, The University of Texas Medical Branch at Galveston, Galveston, TX USA ; Sealy Center for Vaccine Development, The University of Texas Medical Branch at Galveston, Galveston, TX USA ; Center for Biodefense and Emerging Infectious Diseases, The University of Texas Medical Branch at Galveston, Galveston, TX USA
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11
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Minor PD. Live attenuated vaccines: Historical successes and current challenges. Virology 2015; 479-480:379-92. [PMID: 25864107 DOI: 10.1016/j.virol.2015.03.032] [Citation(s) in RCA: 284] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/29/2015] [Accepted: 03/17/2015] [Indexed: 10/23/2022]
Abstract
Live attenuated vaccines against human viral diseases have been amongst the most successful cost effective interventions in medical history. Smallpox was declared eradicated in 1980; poliomyelitis is nearing global eradication and measles has been controlled in most parts of the world. Vaccines function well for acute diseases such as these but chronic infections such as HIV are more challenging for reasons of both likely safety and probable efficacy. The derivation of the vaccines used has in general not been purely rational except in the sense that it has involved careful clinical trials of candidates and subsequent careful follow up in clinical use; the identification of the candidates is reviewed.
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Affiliation(s)
- Philip D Minor
- National Institute of Biological Standards and Control, Blanche Lane, South Mimms, Potters Bar, Hertfordshire EN6 3QG, United Kingdom.
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12
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Gumede N, Muthambi V, Schoub BD. Immunodeficiency-associated vaccine-derived poliovirus type 3 in infant, South Africa, 2011. Emerg Infect Dis 2012; 18:992-4. [PMID: 22607733 PMCID: PMC3358167 DOI: 10.3201/eid1806.120037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Patients with primary immunodeficiency are prone to persistently excrete Sabin-like virus after administration of live-attenuated oral polio vaccine and have an increased risk for vaccine-derived paralytic polio. We report a case of type 3 immunodeficiency-associated vaccine-derived poliovirus in a child in South Africa who was born with X-linked immunodeficiency syndrome.
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Affiliation(s)
- Nicksy Gumede
- National Institute for Communicable Diseases, National Health Laboratory Service, Johannesburg, South Africa.
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13
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Abstract
RNA viruses, such as human immunodeficiency virus, hepatitis C virus, influenza virus, and poliovirus replicate with very high mutation rates and exhibit very high genetic diversity. The extremely high genetic diversity of RNA virus populations originates that they replicate as complex mutant spectra known as viral quasispecies. The quasispecies dynamics of RNA viruses are closely related to viral pathogenesis and disease, and antiviral treatment strategies. Over the past several decades, the quasispecies concept has been expanded to provide an adequate framework to explain complex behavior of RNA virus populations. Recently, the quasispecies concept has been used to study other complex biological systems, such as tumor cells, bacteria, and prions. Here, we focus on some questions regarding viral and theoretical quasispecies concepts, as well as more practical aspects connected to pathogenesis and resistance to antiviral treatments. A better knowledge of virus diversification and evolution may be critical in preventing and treating the spread of pathogenic viruses.
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14
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Abstract
Poliovirus causes paralytic poliomyelitis, an ancient disease of humans that became a major public-health issue in the 20th century. The primary site of infection is the gut, where virus replication is entirely harmless; the two very effective vaccines developed in the 1950s (oral polio vaccine, or OPV, and inactivated polio vaccine, or IPV) induce humoral immunity, which prevents viraemic spread and disease. The success of vaccination in middle-income and developing countries encouraged the World Health Organization to commit itself to an eradication programme, which has made great advances. The features of the infection, including its largely silent nature and the ability of the live vaccine (OPV) to evolve and change in vaccine recipients and their contacts, make eradication particularly challenging. Understanding the pathogenesis and virology of the infection is of major significance as the programme reaches its conclusion.
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Affiliation(s)
- Philip D Minor
- National Institute of Biological Standards and Control, Health Protection Agency, Blanche Lane, South Mimms, Potters Bar, Hertfordshire EN6 3QG, UK
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15
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Natural type 3/type 2 intertypic vaccine-related poliovirus recombinants with the first crossover sites within the VP1 capsid coding region. PLoS One 2010; 5:e15300. [PMID: 21203565 PMCID: PMC3006203 DOI: 10.1371/journal.pone.0015300] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Accepted: 11/10/2010] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Ten uncommon natural type 3/type 2 intertypic poliovirus recombinants were isolated from stool specimens from nine acute flaccid paralysis case patients and one healthy vaccinee in China from 2001 to 2008. PRINCIPAL FINDINGS Complete genomic sequences revealed their vaccine-related genomic features and showed that their first crossover sites were randomly distributed in the 3' end of the VP1 coding region. The length of donor Sabin 2 sequences ranged from 55 to 136 nucleotides, which is the longest donor sequence reported in the literature for this type of poliovirus recombination. The recombination resulted in the introduction of Sabin 2 neutralizing antigenic site 3a (NAg3a) into a Sabin 3 genomic background in the VP1 coding region, which may have been altered by some of the type 3-specific antigenic properties, but had not acquired any type 2-specific characterizations. NAg3a of the Sabin 3 strain seems atypical; other wild-type poliovirus isolates that have circulated in recent years have sequences of NAg3a more like the Sabin 2 strain. CONCLUSIONS 10 natural type 3/type 2 intertypic VP1 capsid-recombinant polioviruses, in which the first crossover sites were found to be in the VP1 coding region, were isolated and characterized. In spite of the complete replacement of NAg3a by type 2-specific amino acids, the serotypes of the recombinants were not altered, and they were totally neutralized by polyclonal type 3 antisera but not at all by type 2 antisera. It is possible that recent type 3 wild poliovirus isolates may be a recombinant having NAg3a sequences derived from another strain during between 1967 and 1980, and the type 3/type 2 recombination events in the 3' end of the VP1 coding region may result in a higher fitness.
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16
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Pliaka V, Achilleos C, Kyriakopoulou Z, Tsakogiannis D, Ruether IGA, Gartzonica C, Levidiotou-Stefanou S, Markoulatos P. Determination of antigenic properties of vaccine derived poliovirus strains. Vaccine 2010; 29:26-33. [DOI: 10.1016/j.vaccine.2010.10.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 09/29/2010] [Accepted: 10/10/2010] [Indexed: 10/18/2022]
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17
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Pliaka V, Kyriakopoulou Z, Tsakogiannis D, Ruether IGA, Gartzonika C, Levidiotou-Stefanou S, Krikelis A, Markoulatos P. Correlation of mutations and recombination with growth kinetics of poliovirus vaccine strains. Eur J Clin Microbiol Infect Dis 2010; 29:1513-23. [DOI: 10.1007/s10096-010-1033-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2009] [Accepted: 08/04/2010] [Indexed: 12/01/2022]
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18
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Catching a virus in the act of RNA release: a novel poliovirus uncoating intermediate characterized by cryo-electron microscopy. J Virol 2010; 84:4426-41. [PMID: 20181687 DOI: 10.1128/jvi.02393-09] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Poliovirus infection requires that the particle undergo a series of conformational transitions that lead to cell entry and genome release. In an effort to understand the conformational changes associated with the release of the RNA genome, we have used cryo-electron microscopy to characterize the structure of the 80S "empty" particles of poliovirus that are thought to represent the final product of the cell entry pathway. Using two-dimensional classification methods, we show that preparations of 80S particles contain at least two structures, which might represent snapshots from a continuous series of conformers. Using three-dimensional reconstruction methods, we have solved the structure of two distinct forms at subnanometric resolution, and we have built and refined pseudoatomic models into the reconstructions. The reconstructions and the derived models demonstrate that the two structural forms are both slightly expanded, resulting in partial disruption of interprotomer interfaces near their particle 2-fold axes, which may represent the site where RNA is released. The models demonstrate that each of the two 80S structures has undergone a unique set of movements of the capsid proteins, associated with rearrangement of flexible loops and amino-terminal extensions that participate in contacts between protomers, between pentamers, and with the viral RNA.
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19
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Unfinished stories on viral quasispecies and Darwinian views of evolution. J Mol Biol 2010; 397:865-77. [PMID: 20152841 DOI: 10.1016/j.jmb.2010.02.005] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2009] [Revised: 02/02/2010] [Accepted: 02/03/2010] [Indexed: 11/22/2022]
Abstract
Experimental evidence that RNA virus populations consist of distributions of mutant genomes, termed quasispecies, was first published 31 years ago. This work provided the earliest experimental support for a theory to explain a system that replicated with limited fidelity and to understand the self-organization and adaptability of early life forms on Earth. High mutation rates and quasispecies dynamics of RNA viruses are intimately related to both viral disease and antiviral treatment strategies. Moreover, the quasispecies concept is being applied to other biological systems such as cancer research in which cellular mutant spectra can be also detected. This review addresses some of the unanswered questions regarding viral and theoretical quasispecies concepts as well as more practical aspects concerning resistance to antiviral treatments and pathogenesis.
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20
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Pliaka V, Dedepsidis E, Kyriakopoulou Z, Papadi G, Tsakogiannis D, Pratti A, Levidiotou-Stefanou S, Markoulatos P. Growth kinetic analysis of bi-recombinant poliovirus vaccine strains. Virus Genes 2010; 40:200-11. [PMID: 20091423 DOI: 10.1007/s11262-010-0448-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Accepted: 01/08/2010] [Indexed: 12/13/2022]
Abstract
Attenuated strains of Sabin poliovirus vaccine replicate in the human gut and in rare cases may cause vaccine-associated paralytic poliomyelitis (VAPP). Mutations at specific sites of the genome and recombination between Sabin strains may result in the loss of the attenuated phenotype of OPV (Oral Poliovirus Vaccine) strains and the acquisition of traits characteristic of wild polioviruses, such as increased neurovirulence and loss of temperature sensitivity. In this study, we determined the phenotypic traits such as temperature sensitivity and growth kinetics of eight OPV isolates (six bi-recombinant and two non-recombinant). The growth phenotype of each isolate as well as of Sabin vaccine strains in Hep2 cell line at two different temperatures (37 and 40 degrees C) was evaluated using two different assays, RCT test (Reproductive Capacity at different Temperatures) and one-step growth curve analysis. Moreover, the nucleotide and amino acid positions in the genomes of the isolates that have been identified as being involved in the attenuated and thermo sensitive phenotype of Sabin vaccine strains were investigated. Mutations that result in loss of the attenuated and thermo sensitive phenotype of Sabin vaccine strains were identified in the genomes of all isolates. Both mutations and recombination events correlated well with the reverted phenotypic traits of OPV-derivatives. In the post-eradication era of wild polioviruses, the identification and the characterization (genomic and phenotypic) of vaccine-derived polioviruses become increasingly important in order to prevent cases or even outbreaks of paralytic poliomyelitis caused by neurovirulent strains.
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Affiliation(s)
- Vaia Pliaka
- Department of Biochemistry & Biotechnology, Microbiology-Virology Laboratory, School of Health Sciences, University of Thessaly, Ploutonos 26 & Aiolou, 41221 Larissa, Greece.
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21
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Burns CC, Campagnoli R, Shaw J, Vincent A, Jorba J, Kew O. Genetic inactivation of poliovirus infectivity by increasing the frequencies of CpG and UpA dinucleotides within and across synonymous capsid region codons. J Virol 2009; 83:9957-69. [PMID: 19605476 PMCID: PMC2747992 DOI: 10.1128/jvi.00508-09] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Accepted: 07/09/2009] [Indexed: 01/16/2023] Open
Abstract
Replicative fitness of poliovirus can be modulated systematically by replacement of preferred capsid region codons with synonymous unpreferred codons. To determine the key genetic contributors to fitness reduction, we introduced different sets of synonymous codons into the capsid coding region of an infectious clone derived from the type 2 prototype strain MEF-1. Replicative fitness in HeLa cells, measured by plaque areas and virus yields in single-step growth experiments, decreased sharply with increased frequencies of the dinucleotides CpG (suppressed in higher eukaryotes and most RNA viruses) and UpA (suppressed nearly universally). Replacement of MEF-1 capsid codons with the corresponding codons from another type 2 prototype strain (Lansing), a randomization of MEF-1 synonymous codons, increased the %G+C without increasing CpG, and reductions in the effective number of codons used had much smaller individual effects on fitness. Poliovirus fitness was reduced to the threshold of viability when CpG and UpA dinucleotides were saturated within and across synonymous codons of a capsid region interval representing only approximately 9% of the total genome. Codon replacements were associated with moderate decreases in total virion production but large decreases in the specific infectivities of intact poliovirions and viral RNAs. Replication of codon replacement viruses, but not MEF-1, was temperature sensitive at 39.5 degrees C. Synthesis and processing of viral intracellular proteins were largely unaltered in most codon replacement constructs. Replacement of natural codons with synonymous codons with increased frequencies of CpG and UpA dinucleotides may offer a general approach to the development of attenuated vaccines with well-defined antigenicities and very high genetic stabilities.
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Affiliation(s)
- Cara C Burns
- Division of Viral Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
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22
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Savolainen-Kopra C, Samoilovich E, Kahelin H, Hiekka AK, Hovi T, Roivainen M. Comparison of poliovirus recombinants: accumulation of point mutations provides further advantages. J Gen Virol 2009; 90:1859-1868. [PMID: 19403755 DOI: 10.1099/vir.0.010942-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The roles of recombination and accumulation of point mutations in the origin of new poliovirus (PV) characteristics have been hypothesized, but it is not known which are essential to evolution. We studied phenotypic differences between recombinant PV strains isolated from successive stool specimens of an oral PV vaccine recipient. The studied strains included three PV2/PV1 recombinants with increasing numbers of mutations in the VP1 gene, two of the three with an amino acid change I-->T in the DE-loop of VP1, their putative PV1 parent and strains Sabin 1 and 2. Growth of these viruses was examined in three cell lines: colorectal adenocarcinoma, neuroblastoma and HeLa. The main observation was a higher growth rate between 4 and 6 h post-infection of the two recombinants with the I-->T substitution. All recombinants grew at a higher rate than parental strains in the exponential phase of the replication cycle. In a temperature sensitivity test, the I-->T-substituted recombinants replicated equally well at an elevated temperature. Complete genome sequencing of the three recombinants revealed 12 (3), 19 (3) and 27 (3) nucleotide (amino acid) differences from Sabin. Mutations were located in regions defining attenuation, temperature sensitivity, antigenicity and the cis-acting replicating element. The recombination site was in the 5' end of 3D. In a competition assay, the most mutated recombinant beat parental Sabin in all three cell lines, strongly suggesting that this virus has an advantage. Two independent intertypic recombinants, PV3/PV1 and PV3/PV2, also showed similar growth advantages, but they also contained several point mutations. Thus, our data defend the hypothesis that accumulation of certain advantageous mutations plays a key role in gaining increased fitness.
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Affiliation(s)
| | - Elena Samoilovich
- Immunoprofylaxis Laboratory, Research Institute of Epidemiology and Microbiology, Minsk, Belarus
| | - Heidi Kahelin
- National Institute for Health and Welfare, Helsinki, Finland
| | | | - Tapani Hovi
- National Institute for Health and Welfare, Helsinki, Finland
| | - Merja Roivainen
- National Institute for Health and Welfare, Helsinki, Finland
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Shahmahmoodi S, Parvaneh N, Burns C, Asghar H, Mamishi S, Tabatabaie H, Chen Q, Teimourian S, Gooya MM, Esteghamati AR, Mousavi T, Yousefi M, Farrokhi K, Mashlool M, Kew O, Nategh R. Isolation of a type 3 vaccine-derived poliovirus (VDPV) from an Iranian child with X-linked agammaglobulinemia. Virus Res 2008; 137:168-72. [DOI: 10.1016/j.virusres.2008.07.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2008] [Revised: 07/02/2008] [Accepted: 07/03/2008] [Indexed: 11/26/2022]
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Bible JM, Pantelidis P, Chan PKS, Tong CYW. Genetic evolution of enterovirus 71: epidemiological and pathological implications. Rev Med Virol 2008; 17:371-9. [PMID: 17487831 DOI: 10.1002/rmv.538] [Citation(s) in RCA: 121] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Since its discovery in the 1970s, enterovirus 71 (EV71) has become one of the most pathogenic enterovirus serotypes causing recurrent outbreaks in different parts of the world. Three waves of outbreaks globally have been recorded over the last three decades and more recently active circulation of EV71 is evident amongst countries in South East Asia and beyond. There is evidence of a continuous evolution in its genetic make up which is likely to impact on its epidemiology and pathological potential. This review examines the molecular genetics and evolution of EV71 in relation to its epidemiological and pathological properties. A thorough understanding of the relationship between the genetic changes and the resulting host-virus interaction is essential for successful control.
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Affiliation(s)
- Jon M Bible
- Infection and Immunology Delivery Unit, Guy's and St. Thomas' NHS Foundation Trust, London, UK
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25
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Macadam AJ, Ferguson G, Stone DM, Meredith J, Knowlson S, Auda G, Almond JW, Minor PD. Rational design of genetically stable, live-attenuated poliovirus vaccines of all three serotypes: relevance to poliomyelitis eradication. J Virol 2006; 80:8653-63. [PMID: 16912313 PMCID: PMC1563845 DOI: 10.1128/jvi.00370-06] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The global eradication of poliomyelitis caused by wild-type virus is likely to be completed within the next few years, despite immense logistic and political difficulties, and may ultimately be followed by the cessation of vaccination. However, the existing live-attenuated vaccines have the potential to revert to virulence, causing occasional disease, and viruses can be shed by immunocompromised individuals for prolonged periods of time. Moreover, several outbreaks of poliomyelitis have been shown to be caused by viruses derived from the Sabin vaccine strains. The appearance of such strains depends on the prevailing circumstances but poses a severe obstacle to strategies for stopping vaccination. Vaccine strains that are incapable of reversion at a measurable rate would provide a possible solution. Here, we describe the constructions of strains of type 3 poliovirus that are stabilized by the introduction of four mutations in the 5' noncoding region compared to the present vaccine. The strains are genetically and phenotypically stable under conditions where the present vaccine loses the attenuating mutation in the 5' noncoding region completely. Type 1 and type 2 strains in which the entire 5' noncoding regions of Sabin 1 and Sabin 2 were replaced exactly with that of one of the type 3 strains were also constructed. The genetic stability of 5' noncoding regions of these viruses matched that of the type 3 strains, but significant phenotypic reversion occurred, illustrating the potential limitations of a rational approach to the genetic stabilization of live RNA virus vaccines.
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Yakovenko ML, Cherkasova EA, Rezapkin GV, Ivanova OE, Ivanov AP, Eremeeva TP, Baykova OY, Chumakov KM, Agol VI. Antigenic evolution of vaccine-derived polioviruses: changes in individual epitopes and relative stability of the overall immunological properties. J Virol 2006; 80:2641-53. [PMID: 16501074 PMCID: PMC1395452 DOI: 10.1128/jvi.80.6.2641-2653.2006] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2005] [Accepted: 12/21/2005] [Indexed: 12/13/2022] Open
Abstract
The Sabin oral poliovirus vaccine (OPV) readily undergoes changes in antigenic sites upon replication in humans. Here, a set of antigenically altered descendants of the three OPV serotypes (76 isolates) was characterized to determine the driving forces behind these changes and their biological implications. The amino acid residues of OPV derivatives that lie within or close to the known antigenic sites exhibited a marked tendency to be replaced by residues characteristic of homotypic wild polioviruses, and these changes may occur very early in OPV evolution. The specific amino acid alterations nicely correlated with serotype-specific changes in the reactivity of certain individual antigenic sites, as revealed by the recently devised monoclonal antibody-based enzyme-linked immunosorbent assay. In comparison to the original vaccine, small changes, if any, in the neutralizing capacity of human or rabbit sera were observed in highly diverged vaccine polioviruses of three serotypes, in spite of strong alterations of certain epitopes. We propose that the common antigenic alterations in evolving OPV strains largely reflect attempts to eliminate fitness-decreasing mutations acquired either during the original selection of the vaccine or already present in the parental strains. Variability of individual epitopes does not appear to be primarily caused by, or lead to, a significant immune evasion, enhancing only slightly, if at all, the capacity of OPV derivatives to overcome immunity in human populations. This study reveals some important patterns of poliovirus evolution and has obvious implications for the rational design of live viral vaccines.
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Affiliation(s)
- Maria L Yakovenko
- A. N. Belozersky Institute of Physical-Chemical Biology, Moscow State University, Moscow 119899, Russia
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27
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Kew OM, Sutter RW, de Gourville EM, Dowdle WR, Pallansch MA. VACCINE-DERIVED POLIOVIRUSES AND THE ENDGAME STRATEGY FOR GLOBAL POLIO ERADICATION. Annu Rev Microbiol 2005; 59:587-635. [PMID: 16153180 DOI: 10.1146/annurev.micro.58.030603.123625] [Citation(s) in RCA: 466] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
As the global eradication of wild poliovirus nears, the World Health Organization (WHO) is addressing challenges unprecedented in public health. The live, attenuated oral poliovirus vaccine (OPV), used for more than four decades to interrupt poliovirus transmission, and the vaccine of choice for developing countries, is genetically unstable. Reversion of the small number of substitutions conferring the attenuated phenotype frequently occurs during OPV replication in humans and is the underlying cause of the rare cases of vaccine-associated paralytic poliomyelitis (VAPP) in OPV recipients and their close contacts. Whereas VAPP has long been recognized, two other adverse events have been identified more recently: (a) long-term excretion of highly evolved vaccine-derived polioviruses (VDPVs) in persons with primary immunodeficiencies, and (b) polio outbreaks associated with circulating VDPVs in areas with low rates of OPV coverage. Developing a posteradication strategy to minimize the risks of VDPV emergence and spread has become an urgent WHO priority.
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Affiliation(s)
- Olen M Kew
- Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
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28
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Arita M, Shimizu H, Nagata N, Ami Y, Suzaki Y, Sata T, Iwasaki T, Miyamura T. Temperature-sensitive mutants of enterovirus 71 show attenuation in cynomolgus monkeys. J Gen Virol 2005; 86:1391-1401. [PMID: 15831951 DOI: 10.1099/vir.0.80784-0] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Enterovirus 71 (EV71) is one of the major causative agents of hand, foot and mouth disease and is sometimes associated with serious neurological disorders. In this study, an attempt was made to identify molecular determinants of EV71 attenuation of neurovirulence in a monkey infection model. An infectious cDNA clone of the virulent strain of EV71 prototype BrCr was constructed; temperature-sensitive (ts) mutations of an attenuated strain of EV71 or of poliovirus (PV) Sabin vaccine strains were then introduced into the infectious clone. In vitro and in vivo phenotypes of the parental and mutant viruses were analysed in cultured cells and in cynomolgus monkeys, respectively. Mutations in 3D polymerase (3D(pol)) and in the 3' non-translated region (NTR), corresponding to ts determinants of Sabin 1, conferred distinct temperature sensitivity to EV71. An EV71 mutant [EV71(S1-3')] carrying mutations in the 5' NTR, 3D(pol) and in the 3' NTR showed attenuated neurovirulence, resulting in limited spread of virus in the central nervous system of monkeys. These results indicate that EV71 and PV1 share common genetic determinants of neurovirulence in monkeys, despite the distinct properties in their original pathogenesis.
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Affiliation(s)
- Minetaro Arita
- Department of Virology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan
| | - Hiroyuki Shimizu
- Department of Virology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan
| | - Noriyo Nagata
- Department of Pathology, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan
| | - Yasushi Ami
- Division of Experimental Animals Research, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan
| | - Yuriko Suzaki
- Division of Experimental Animals Research, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan
| | - Tetsutaro Sata
- Department of Pathology, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan
| | - Takuya Iwasaki
- Division of Clinical Investigation, Institute of Tropical Medicine, Nagasaki University, Nagasaki 852-8523, Japan
| | - Tatsuo Miyamura
- Department of Virology II, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-shi, Tokyo 208-0011, Japan
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Blomqvist S, Bruu AL, Stenvik M, Hovi T. Characterization of a recombinant type 3/type 2 poliovirus isolated from a healthy vaccinee and containing a chimeric capsid protein VP1. J Gen Virol 2003; 84:573-580. [PMID: 12604808 DOI: 10.1099/vir.0.18708-0] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Sabin 3/Sabin 2/Sabin 3 (S3/2/3) intertypic recombinant poliovirus was isolated from a faecal specimen from a 2-year-old healthy boy approximately 12 weeks after administration of oral poliovirus vaccine. The first recombination junction was in the genomic region encoding the VP1 capsid protein between nucleotide positions 3274 and 3285 (numbering according to Sabin 3) and the second was in the RNA polymerase region (nucleotide positions 6824 and 6825). The recombination had introduced six Sabin 2-derived amino acids into the Sabin 3 capsid environment in the carboxyl terminus of VP1. The complete genome of the recombinant virus differed from corresponding parental Sabin strains at 33 nucleotide positions, nine of them resulting in an amino acid substitution. Four substitutions were in the capsid proteins and five were in the region encoding the non-structural proteins. One amino acid was changed in the antigenic site 2B and two in site 3B. In addition, the whole antigenic site 3A was replaced by Sabin 2-specific amino acids, but the antigenic characteristics of the S3/2/3 did not show type 2-specific features. Neutralizing antibody titres in sera from Finnish children immunized with the inactivated poliovirus vaccine were not lower against the recombinant virus than against Sabin 3. Our results suggest that the chimeric virus was most likely generated by recombination events in the vaccinee, rather than representing progeny of circulating vaccine-derived virus.
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Affiliation(s)
- Soile Blomqvist
- Department of Microbiology, Enterovirus Laboratory, National Public Health Institute (KTL), Mannerheimintie 166, 00300 Helsinki, Finland
| | | | - Mirja Stenvik
- Department of Microbiology, Enterovirus Laboratory, National Public Health Institute (KTL), Mannerheimintie 166, 00300 Helsinki, Finland
| | - Tapani Hovi
- Department of Microbiology, Enterovirus Laboratory, National Public Health Institute (KTL), Mannerheimintie 166, 00300 Helsinki, Finland
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Hertzler S, Luo M, Lipton HL. Mutation of predicted virion pit residues alters binding of Theiler's murine encephalomyelitis virus to BHK-21 cells. J Virol 2000; 74:1994-2004. [PMID: 10644372 PMCID: PMC111677 DOI: 10.1128/jvi.74.4.1994-2004.2000] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Theiler's murine encephalomyelitis virus (TMEV), a natural pathogen of mice, is a member of the genus Cardiovirus in the family Picornaviridae. Structural studies indicate that the cardiovirus pit, a deep depression on the surface of the virion, is involved in receptor attachment; however, this notion has never been systematically tested. Therefore, we used BeAn virus, a less virulent TMEV, to study the effect of site-specific mutation of selected pit amino acids on viral binding as well as other replicative functions of the virus. Four amino acids within the pit, V1091, P1153, A1225 and P3179, were selected for mutagenesis to evaluate their role in receptor attachment. Three amino acid replacements were made at each site, the first a conservative replacement, followed by progressively more radical amino acid changes in order to detect variable effects at each site. A total of seven viable mutant viruses were recovered and characterized for their binding properties to BHK-21 cells, capsid stability at 40 degrees C, viral RNA replication, single- and multistep growth kinetics, and virus translation. Our data implicate three of these residues in TMEV-cell receptor attachment.
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Affiliation(s)
- S Hertzler
- Integrated Graduate Program, Northwestern University Medical School, Chicago, Illinois, USA
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31
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Reimerink JH, van der Avoort HG, van Loon AM, Koopmans MP. Genetic basis for immunological aberrations in poliovirus Sabin serotype 3 strains imported in the netherlands. J Clin Microbiol 1999; 37:2393-8. [PMID: 10405373 PMCID: PMC85236 DOI: 10.1128/jcm.37.8.2393-2398.1999] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/1999] [Accepted: 04/29/1999] [Indexed: 11/20/2022] Open
Abstract
During the characterization of poliovirus type 3 strains imported in The Netherlands, Sabin serotype 3 strains that reacted with both specific antisera against Sabin-like (vaccine) and non-Sabin-like (wild-type) strains by the intratypic strain differentiation assay have been found. The present study was done to determine the pathogenic potential of these virus strains for humans. Characterization of these so-called double-reactive strains with neutralizing monoclonal antibodies (MAbs) against the major antigenic sites of serotype 3 Sabin virus led to the identification of two groups with different antigenic properties. Six of the seven strains were resistant to neutralization with MAbs against sites 2B and 3B and one strain was neutralized by all the MAbs in a manner similar to that for the Sabin serotype 3 virus. Partial sequencing of the coding regions confirmed the antigenic changes for all six antigenically distinct strains. By inoculation of these viruses into transgenic mice which express the human poliovirus receptor, one strain was identified as highly neurovirulent, three were identified as intermediate, and three were identified as attenuated. Sera from vaccinated persons efficiently neutralized the mutants. Our data suggest that some double-reactive strains are a potential risk to the unvaccinated community but not to the vaccinated population.
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Affiliation(s)
- J H Reimerink
- Research Laboratory for Infectious Diseases, National Institute of Public Health and the Environment (RIVM), Bilthoven, The Netherlands
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32
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Chezzi C, Dommann CJ, Blackburn NK, Maselesele E, McAnerney J, Schoub BD. Genetic stability of oral polio vaccine prepared on primary monkey kidney cells or Vero cells--effects of passage in cell culture and the human gastrointestinal tract. Vaccine 1998; 16:2031-8. [PMID: 9796061 DOI: 10.1016/s0264-410x(98)00079-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The genetic stability of the three Sabin oral poliovaccine (OPV) strains produced on either primary monkey kidney (VK) or Vero cell substrates was compared in vivo and in vitro by measuring the rate at which the bases most strongly associated with attenuation and reversion to neurovirulence (positions 480, 481, and 472 in the 5' non-coding region of Sabin 1, 2 and 3 respectively, and 2034 in VP3 of Sabin 3) reverted during passage of the vaccine strains in the gastrointestinal tract of primary vaccinees and in cell culture. For the in vivo study, the poliovirus excretion patterns of 21 infants receiving OPV produced on either VK or Vero cells were followed for 21 days. No significant differences in either the frequency of excretion or the rate of reversion were observed between the two vaccine groups. The rate of accumulation of revertants during passage in vitro was compared for the three Sabin strains passaged 10 times in either VK or Vero cells. For types 1 and 3, revertants accumulated faster upon passage through VK cells compared with passage through Vero cells. Type 2 appeared to be stable as no revertants were detected in either cell type. Results of this study suggest that the use of Vero as opposed to VK cells as substrate for the manufacture of OPV does not negatively influence the genetic stability of the three Sabin OPV strains in vivo or in vitro.
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Affiliation(s)
- C Chezzi
- National Institute for Virology, University of the Witwatersrand Medical School, Johannesburg, South Africa.
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34
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Abstract
Oral poliovirus vaccine (OPV) developed by A. Sabin has been effectively used to control poliomyelitis in Brazil, and the last case with the isolation of a wild poliovirus strain occurred in March 1989. Although the vaccine controlled the circulation of wild strains and poliomyelitis cases associated with these strains were not detected during the last eight years, rare cases classified as vaccine-associated paralytic poliomyelitis (VAPP) have been detected. Molecular characterization studies of poliovirus strains isolated from VAPP cases and from healthy contacts have confirmed that the isolates are derived from the Sabin vaccine strains and also detected genomic modifications known or suspected to increase neurovirulence such as mutations and recombination. The molecular characterization of polioviruses isolated during the last eight years from paralysis cases classified as Guillain-Barré (GBS) syndrome and transverse myelitis (TM), and from facial paralysis (FP) cases also confirmed the vaccine origin of the strains and demonstrated mutations known to increase neurovirulence. Analysis of the epidemiologic data of these GBS, TM and FP cases demonstrated that in most of them the last OPV dose was given months or years before the onset of the disease and the isolation of the polioviruses. The temporal association between the isolation of these strains and the GBS, TM and FP suggested that the Sabin vaccine-derived poliovirus strains could also rarely trigger the diseases.
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Affiliation(s)
- F Friedrich
- Departamento de Virologia, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brasil
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35
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Abstract
Poliomyelitis has been largely controlled by the use of attenuated live vaccine strains. The molecular basis of attenuation is beginning to be understood, but the interactions between the virus and its human host remain mysterious.
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Affiliation(s)
- P D Minor
- National Institute for Biological Standards and Control, Potters Bar Hertfordshire, UK.
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36
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Affiliation(s)
- V R Racaniello
- Department of Microbiology, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA
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37
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Driesel G, Diedrich S, Kunkel U, Schreier E. Vaccine-associated cases of poliomyelitis over a 30 year period in East Germany. Eur J Epidemiol 1995; 11:647-54. [PMID: 8861848 DOI: 10.1007/bf01720298] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A report is presented about studies on poliovirus type 3 isolates from vaccine-associated cases or contacts of cases of paralytic poliomyelitis, observed over a period of 30 years in East Germany (former GDR). In the viral isolates, some mutations were found in comparison to the Sabin vaccine type 3 strain, distributed over the whole genome. The significance of these mutations has been discussed, especially the mutation at position 472 in the 5' noncoding region found in all the isolates investigated. In five isolates, intertypic recombination between Sabin type 3 and Sabin type 1 vaccine strain occurred. Primary and secondary structures were analysed for the recombination sites.
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Affiliation(s)
- G Driesel
- Robert Koch Institute, Berlin, Germany
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38
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Georgescu MM, Tardy-Panit M, Guillot S, Crainic R, Delpeyroux F. Mapping of mutations contributing to the temperature sensitivity of the Sabin 1 vaccine strain of poliovirus. J Virol 1995; 69:5278-86. [PMID: 7636970 PMCID: PMC189363 DOI: 10.1128/jvi.69.9.5278-5286.1995] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The temperature-sensitive and attenuated phenotypes of the Sabin type 1 vaccine strain of poliovirus result from numerous point mutations which occurred in the virulent Mahoney virus parent. One of these mutations is located in a 3D polymerase (3Dpol) codon (U-6203-->C, Tyr-73-->His) and is involved in attenuation in common mice (M. Tardy-Panit, B. Blondel, A. Martin, F. Tekaia, F. Horaud, and F. Delpeyroux, J. Virol. 67:4630-4638, 1993). This mutation also appears to contribute to temperature sensitivity, in association with at least 1 other of the 10 mutations of the 3'-terminal part of the genome including the 3Dpol coding and 3' noncoding regions. To map the other mutation(s), we constructed poliovirus mutants by mutagenesis and recombination of Mahoney and Sabin 1 cDNAs. Characterization of these poliovirus mutants showed that a second mutation in a 3Dpol codon (C-7071-->U, Thr-362-->Ile) contributes to temperature sensitivity. A mutation in the 3' noncoding region of the genome (A-7441-->G), alone or linked to another mutation (U-7410-->C), also appeared to be involved in this phenotype. The temperature-sensitive effect associated with the 3'-terminal part of the Sabin 1 genome results from the cumulative and/or synergistic effects of at least three genetic determinants, i.e., the His-73 and Ile-362 codons of 3Dpol and nucleotide G-7441. Sequence analysis of strains isolated from patients with vaccine-associated paralytic poliomyelitis showed that these genetic determinants are selected against in vivo, although the Ile-362 codon appeared to be more stable than either the His-73 codon or G-7441. These genetic determinants may contribute to the safety of Sabin 1 in vaccines.
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Affiliation(s)
- M M Georgescu
- Laboratoire d'Epidémiologie Moléculaire des Entérovirus, Institut Pasteur, Paris, France
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39
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Beck MA, Shi Q, Morris VC, Levander OA. Rapid genomic evolution of a non-virulent coxsackievirus B3 in selenium-deficient mice results in selection of identical virulent isolates. Nat Med 1995; 1:433-6. [PMID: 7585090 DOI: 10.1038/nm0595-433] [Citation(s) in RCA: 240] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Previous work from our laboratory demonstrated that selenium deficiency in the mouse allows a normally benign (amyocarditic) cloned and sequenced Coxackievirus to cause significant heart damage. Furthermore, Coxsackievirus recovered from the hearts of selenium-deficient mice inoculated into selenium-adequate mice still induced significant heart damage, suggesting that the amyocarditic Coxsackievirus had mutated to a virulent phenotype. Here we report that sequence analysis revealed six nucleotide changes between the virulent virus recovered from the selenium-deficient host and the avirulent input virus. These nucleotide changes are consistent with known differences in base composition between virulent and avirulent strains of Coxsackievirus. To the best of our knowledge, this is the first report of a specific nutritional deficiency driving changes in a viral genome, permitting an avirulent virus to acquire virulence due to genetic mutation.
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Affiliation(s)
- M A Beck
- Frank Porter Graham Child Development Center, University of North Carolina at Chapel Hill 27599-8180, USA
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40
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Georgescu MM, Delpeyroux F, Tardy-Panit M, Balanant J, Combiescu M, Combiescu AA, Guillot S, Crainic R. High diversity of poliovirus strains isolated from the central nervous system from patients with vaccine-associated paralytic poliomyelitis. J Virol 1994; 68:8089-101. [PMID: 7966599 PMCID: PMC237273 DOI: 10.1128/jvi.68.12.8089-8101.1994] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
To establish the etiology of vaccine-associated paralytic poliomyelitis (VAPP), isolates from the central nervous system (CNS) from eight patients with VAPP were compared with stool isolates from the same patients. The vaccine (Sabin) origin was checked for all of the available isolates. Unique and similar strains were recovered from paired stool and CNS samples for five of the eight VAPP cases and the three wild-type cases included in the study. In the remaining three VAPP cases, the stool samples and, in one case, the CNS samples contained mixtures of strains. In two of these cases an equivalent of the CNS isolate was found among the strains separated by plaque purification from stool mixtures, and in one case different strains were isolated from CNS and stool. This shows that the stool isolate in VAPP might not be always representative of the etiologic agent of the neurological disease. A wide variety of poliovirus vaccine genomic structures appeared to be implicated in the etiology of VAPP. Of nine CNS vaccine-derived strains, four were nonrecombinant and five were recombinant (vaccine/vaccine or even vaccine/nonvaccine). The neuropathogenic potential of the isolates was evaluated in transgenic mice sensitive to poliovirus. All of the CNS-isolated strains lost the attenuated phenotype of the Sabin strains. However, for half of them, the neurovirulence was lower than expected, suggesting that the degree of neurovirulence for transgenic mice is not necessarily correlated with the neuropathogenicity in humans.
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41
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Mosser AG, Sgro JY, Rueckert RR. Distribution of drug resistance mutations in type 3 poliovirus identifies three regions involved in uncoating functions. J Virol 1994; 68:8193-201. [PMID: 7966611 PMCID: PMC237285 DOI: 10.1128/jvi.68.12.8193-8201.1994] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We have previously described the use of an uncoating inhibitor, WIN 51711, to select drug-resistant mutants of the Sabin strain of poliovirus type 3. Two-thirds of the mutants proved to be dependent on the drug for plaque formation because of extreme thermolability (A. G. Mosser and R. R. Rueckert, J. Virol. 67:1246-1254, 1993). Here we report the responsible mutations; all were traced to single amino acid substitutions. Mutations conferring dependence and thermolability occurred in all four capsid proteins (VP1 to VP4), but all were clustered near residue 53 of VP4 at the inner capsid surface. Amino acid substitutions of the remaining non-drug-dependent mutants were mapped to three distinct loci: (i) on or near the inner capsid surface, at VP4 residue 46 or VP1 residue 129, in the vicinity of the drug dependence substitutions; (ii) at residues 192, 194, and 260 in the lining of the VP1 beta barrel, which is the drug-binding site; and (iii) at VP1 residue 105 on the edge of the canyon surrounding the fivefold axis of symmetry, the putative receptor-binding site. All of the mutations increased the eclipse rate of cell-attached virus. Such mutants help identify parts of the capsid that play a role in viral uncoating functions.
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Affiliation(s)
- A G Mosser
- Institute for Molecular Virology, University of Wisconsin, Madison 53706
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42
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Basavappa R, Syed R, Flore O, Icenogle JP, Filman DJ, Hogle JM. Role and mechanism of the maturation cleavage of VP0 in poliovirus assembly: structure of the empty capsid assembly intermediate at 2.9 A resolution. Protein Sci 1994; 3:1651-69. [PMID: 7849583 PMCID: PMC2142606 DOI: 10.1002/pro.5560031005] [Citation(s) in RCA: 152] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The crystal structure of the P1/Mahoney poliovirus empty capsid has been determined at 2.9 A resolution. The empty capsids differ from mature virions in that they lack the viral RNA and have yet to undergo a stabilizing maturation cleavage of VP0 to yield the mature capsid proteins VP4 and VP2. The outer surface and the bulk of the protein shell are very similar to those of the mature virion. The major differences between the 2 structures are focused in a network formed by the N-terminal extensions of the capsid proteins on the inner surface of the shell. In the empty capsids, the entire N-terminal extension of VP1, as well as portions corresponding to VP4 and the N-terminal extension of VP2, are disordered, and many stabilizing interactions that are present in the mature virion are missing. In the empty capsid, the VP0 scissile bond is located some 20 A away from the positions in the mature virion of the termini generated by VP0 cleavage. The scissile bond is located on the rim of a trefoil-shaped depression in the inner surface of the shell that is highly reminiscent of an RNA binding site in bean pod mottle virus. The structure suggests plausible (and ultimately testable) models for the initiation of encapsidation, for the RNA-dependent autocatalytic cleavage of VP0, and for the role of the cleavage in establishing the ordered N-terminal network and in generating stable virions.
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Affiliation(s)
- R Basavappa
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115
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43
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Abstract
Recombinant DNA technology has greatly accelerated the development of live attenuated bacterial vaccines for cholera, typhoid, and shigellosis. Significant attenuation has been achieved by deleting genes for various virulence determinants, biosynthetic genes, and regulatory genes. As these vaccine candidates move from closed-ward clinical studies to outpatient and field trials, a variety of concerns needs to be addressed about the safety of these vaccines, not only for the vaccinee, but also for the community and the environment. In the case of Vibrio cholerae, specific deletions (delta attRS1 and delta recA) have been introduced into some live vaccine candidates, rendering them incapable of performing homologous and site-specific recombination events that could lead to reacquisition of active cholera toxin genes. Mutations in recA might also limit the persistence of the live vaccine candidate in the environment.
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Affiliation(s)
- J J Mekalanos
- Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, Massachusetts 02115
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44
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Chapman NM, Tu Z, Tracy S, Gauntt CJ. An infectious cDNA copy of the genome of a non-cardiovirulent coxsackievirus B3 strain: its complete sequence analysis and comparison to the genomes of cardiovirulent coxsackieviruses. Arch Virol 1994; 135:115-30. [PMID: 8198437 DOI: 10.1007/bf01309769] [Citation(s) in RCA: 94] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The genome of the non-cardiovirulent coxsackievirus B3 (CVB3) strain CVB3/0 was cloned and sequenced to aid in the elucidation of the viral genetic basis for the CVB3 cardiovirulent phenotype. Reverse-transcribed sub-genomic complementary DNA (cDNA) fragments were enzymatically amplified using generic oligonucleotide primers and were assembled as a complete infectious genomic copy (pCVB3-0) downstream of the T7 RNA polymerase promoter. Positive-strand viral RNA transcribed from pCVB3-0 using T7 RNA polymerase and transfected into HeLa cells produced infectious virus (CVB3/0c). No differences in phenotype were observed comparing growth of CVB3/0c to the parental CVB3/0 in HeLa single-step growth curves, virus yields, or plaque size. When inoculated into C3H/HeJ mice, CVB3/0c achieved cardiac titers equivalent to the parental CVB3/0 and like the parental virus, demonstrated a non-cardiovirulent phenotype. The nucleotide sequence of the cloned CVB3/0 genome was determined and compared to the genomes of infectious cDNA clones of cardiovirulent CVB3 strains. Two consistent differences among nucleotides in non-translated regions and 8 amino acid differences relative to two well-characterized infectious cDNA copies of genomes from cardiovirulent CVB3 strains were identified.
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Affiliation(s)
- N M Chapman
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha
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45
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Ramsingh A, Araki H, Bryant S, Hixson A. Identification of candidate sequences that determine virulence in Coxsackievirus B4. Virus Res 1992; 23:281-92. [PMID: 1320798 DOI: 10.1016/0168-1702(92)90114-o] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We have previously shown that a major determinant of virulence for coxsackievirus B4 mapped to the 5' end of the viral genome. Comparison of the corresponding cDNA sequences of a virulent and a non-virulent virus has allowed the identification of candidate determinants of virulence in the 5' untranslated region and the capsid proteins VP1, VP2 and VP4. Thirteen nucleotide substitutions were observed in a region spanning 3298 nucleotides. Four mutations were detected in the non-coding region. Of the remaining nine mutations, four were silent while five resulted in amino acid substitutions in VP1, VP2 and VP4. The amino acid substitutions in the virulent virus were analyzed in relation to the three-dimensional structures of the capsid proteins of poliovirus. Two substitutions mapped to the amino termini of VP1 and VP4. Of the two substitutions observed in VP2, one mapped to the large loop that connects beta strand E with the radial helix on the back surface of the eight-stranded antiparallel beta barrel while the other mapped to beta strand G. One amino acid substitution in VP1 mapped to the loop connecting beta strands D and E at a site close to a major determinant of attenuation in poliovirus type 2.
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Affiliation(s)
- A Ramsingh
- Wadsworth Center for Laboratories and Research, New York State Department of Health, Albany 12201-0509
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46
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Affiliation(s)
- C U Hellen
- Department of Microbiology, State University of New York, Stony Brook 11794-8621
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47
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Reynolds C, Birnby D, Chow M. Folding and processing of the capsid protein precursor P1 is kinetically retarded in neutralization site 3B mutants of poliovirus. J Virol 1992; 66:1641-8. [PMID: 1310770 PMCID: PMC240901 DOI: 10.1128/jvi.66.3.1641-1648.1992] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Poliovirus mutants in neutralizing antigenic site 3B were constructed by replacing the glutamic acid residue at amino acid 74 of capsid protein VP2 (VP2074E), using site-specific mutagenesis methods. All viable mutants display small-plaque phenotypes. Characterization of these mutants indicates that capsid assembly is perturbed. Although the defect in capsid assembly reduces the yield of mutant virus particles per cell, the resultant assembled particle is wild-type-like in structure and infectivity. Analyses of capsid assembly intermediates show a transient accumulation of the unprocessed capsid protein precursor, P1, indicating that cleavage of the mutant P1 by the 3CD protease is retarded. The mutant VP0-VP3-VP1 complex generated upon P1 cleavage appears assembly competent, forming pentamer and empty capsid assembly intermediates and infectious virion particles. Although the structure of the infectious mutant virus is virtually identical with that of the wild-type virus, the thermal stability of the mutant virus is dramatically increased over that of the wild-type virus. Thus, mutations at this residue are pleiotropic, altering the kinetics of capsid assembly and generating a virus that is more thermostable and more resistant to neutralization by the site 3B monoclonal antibodies.
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Affiliation(s)
- C Reynolds
- Department of Applied Biological Sciences, Massachusetts Institute of Technology, Cambridge 02139-4307
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48
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Racaniello VR. Poliovirus vaccines. BIOTECHNOLOGY (READING, MASS.) 1992; 20:205-22. [PMID: 1318134 DOI: 10.1016/b978-0-7506-9265-6.50015-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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49
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Tatem JM, Weeks-Levy C, Mento SJ, DiMichele SJ, Georgiu A, Waterfield WF, Sheip B, Costalas C, Davies T, Ritchey MB. Oral poliovirus vaccine in the United States: molecular characterization of Sabin type 3 after replication in the gut of vaccinees. J Med Virol 1991; 35:101-9. [PMID: 1662701 DOI: 10.1002/jmv.1890350206] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Derivatives of Sabin 3 shed from recipients of oral poliovirus vaccine in the United States (U.S.) were examined for genetic changes identified in strains excreted by vaccinees in the United Kingdom [U.K.; Evans et al., 1985; Cammack et al., 1988, Macadam et al., 1989]. Among the eight primary vaccinees studied, the duration of excretion and molecular evolution of type 3 strains varied greatly. The period of virus excretion after vaccination ranged from as few as 2 days to as many as 36 days. Nucleotide sequence analysis of viral RNAs extracted from shed virus indicated that only fifty percent of the vaccinees exclusively excreted strains in which the attenuating mutation at nucleotide 472 in the 5' noncoding region of the genome had reverted from uracil (U) to cytosine (C), the nucleotide found in neurovirulent strains. Compared to the wild-type Leon strain, the low activity of stool isolate KW4 in a complete monkey neurovirulence test demonstrated that presence of C at 472 does not render a type 3 strain pathogenic. Conversely, an isolate was identified which efficiently replicated in monkey nervous tissue and maintained the attenuated U at 472. Oligonucleotide fingerprinting and sequence analysis of viral RNAs from stool isolates indicated that one vaccinee (KW) eventually excreted intertypic recombinant strains consistent with those reported in the U.K. studies. Unique to this study, one vaccinee (KS) excreted nonrecombinant virus possessing U at 472 for up to 21 days. The significance of the KS strain profile in relation to differences in the U.S. vaccine compared to the vaccine distributed in the U.K. and other countries is discussed.
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Affiliation(s)
- J M Tatem
- Lederle Laboratories, Biologicals Department, Pearl River, New York 10965
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50
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Macadam AJ, Ferguson G, Arnold C, Minor PD. An assembly defect as a result of an attenuating mutation in the capsid proteins of the poliovirus type 3 vaccine strain. J Virol 1991; 65:5225-31. [PMID: 1654440 PMCID: PMC249000 DOI: 10.1128/jvi.65.10.5225-5231.1991] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The molecular basis of the temperature-sensitive (ts) phenotype of P3/Sabin, the type 3 vaccine strain of poliovirus, was investigated in light of the known correlation between ts and attenuation phenotypes. A phenylalanine at residue 91 of the capsid protein VP3 was a major determinant of both phenotypes, and attenuation and ts could be reverted by the same second-site mutations. The ts phenotype was due to a defect early in the assembly process that inhibited the formation of 14S pentamers, empty capsids, and virions. It was further shown that capsid proteins that were not incorporated into higher-order structures had short half-lives at the nonpermissive temperature.
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Affiliation(s)
- A J Macadam
- National Institute for Biological Standards and Control, Hertfordshire, United Kingdom
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