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Chen J, Wang Z, Lin S, Menglin G, Shao Y, Li S, Chen Q, Cui Y, Hu Y, Liu G. Insights into cross-species infection by coronavirus: Porcine epidemic diarrhea virus infections in the rodent. Virol Sin 2025:S1995-820X(25)00034-3. [PMID: 40157605 DOI: 10.1016/j.virs.2025.03.012] [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: 07/03/2024] [Accepted: 03/25/2025] [Indexed: 04/01/2025] Open
Abstract
The cross-species infection of coronaviruses has resulted in several major epidemics since 2003. Therefore, it is of great importance to explore the host ranges of coronaviruses and their features among different hosts. In this study, the porcine epidemic diarrhea virus (PEDV), with swine as the only natural reservoir, was detected in rat fecal samples collected from pig farms. Further animal tests showed PEDV can cause systemic infections in neonate mice and rats. The brain, lung intestine and spleen were all targets for PEDV in rodents in contrast to the intestine being targeted in pigs. Morbidity and mortality vary via different infection routes. PEDV was also detectable in feces after infection, suggesting that the infected rodents were potential infectious sources. Moreover, the cerebric tropism of PEDV was verified in piglets, which had not been identified before. In conclusion, our findings demonstrate that PEDV can cross the species barrier to infect mice and rats through different routes. Although it is highly devastating to piglets, PEDV changes the target organs and turns to be milder when meeting with new hosts. Based on these findings, more attention should be paid to the cross-species infection of PEDV to avoid the emergence of another zoonosis.
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Affiliation(s)
- Jianing Chen
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China
| | - Zemei Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China; College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Shengyu Lin
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China; College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Gao Menglin
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China
| | - Yongheng Shao
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China; College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Shuxian Li
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China; College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China
| | - Qingbo Chen
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China; College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China
| | - Yaru Cui
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China
| | - Yonghao Hu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Guangliang Liu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China.
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Zhang L, Miao W, Zhou M, Lin M, Fu C, Wu Z, Lei X, Xu J, Cao S, Zhu S. Neutralizing VHH Antibodies Targeting the Spike Protein of PEDV. Vet Sci 2024; 11:533. [PMID: 39591307 PMCID: PMC11598873 DOI: 10.3390/vetsci11110533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2024] [Revised: 10/21/2024] [Accepted: 10/25/2024] [Indexed: 11/28/2024] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) is a highly contagious coronavirus that infect pigs' intestinal epithelial cells, causing high morbidity and mortality. Due to the rapid mutation of PEDV, vaccine efficacy is uncertain, prompting exploration of alternative treatments. Nanobodies, also known as variable heavy chain domains of heavy chain-only antibodies (VHHs), offer significant potential in biomedical applications due to their small size and high specificity. In this study, yeast two-hybrid technology was employed to screen for eight specific VHH sequences targeting the PEDV S protein from a synthetically constructed nanobody yeast library. The VHH genes were then cloned into expression plasmids for recombinant protein production, and the resulting VHHs (termed PEDV S-VHHs) were purified. Indirect immunofluorescence assay (IFA) and Western blotting analysis confirmed that these VHHs specifically bind to both PEDV and its S protein. Neutralization assays demonstrated that seven PEDV S-VHHs exhibited potent neutralizing activity against PEDV. Additionally, a combination of these seven antibodies showed enhanced antiviral effects. Preliminary predictions were also made regarding the binding sites between these VHHs and PEDV. The PEDV S-VHHs described in this study hold potential as candidates for the prevention and treatment of PEDV infection.
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Affiliation(s)
- Li Zhang
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Engineering Technology Research Center for Modern Animal Science and Novel Veterinary Pharmaceutic Development, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (L.Z.); (M.Z.); (Z.W.); (X.L.)
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Wei Miao
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Mo Zhou
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Engineering Technology Research Center for Modern Animal Science and Novel Veterinary Pharmaceutic Development, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (L.Z.); (M.Z.); (Z.W.); (X.L.)
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Miao Lin
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Changyao Fu
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Zhi Wu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Engineering Technology Research Center for Modern Animal Science and Novel Veterinary Pharmaceutic Development, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (L.Z.); (M.Z.); (Z.W.); (X.L.)
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Xinnuo Lei
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Engineering Technology Research Center for Modern Animal Science and Novel Veterinary Pharmaceutic Development, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (L.Z.); (M.Z.); (Z.W.); (X.L.)
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Jialong Xu
- Medical School, Nanjing University, Nanjing 210093, China;
| | - Shinuo Cao
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Engineering Technology Research Center for Modern Animal Science and Novel Veterinary Pharmaceutic Development, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (L.Z.); (M.Z.); (Z.W.); (X.L.)
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
| | - Shanyuan Zhu
- Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Engineering Technology Research Center for Modern Animal Science and Novel Veterinary Pharmaceutic Development, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (L.Z.); (M.Z.); (Z.W.); (X.L.)
- College of Veterinary Pharmacy, Jiangsu Agri-Animal Husbandry Vocational College, Taizhou 225300, China; (W.M.); (M.L.); (C.F.)
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Rosas-Murrieta NH, Rodríguez-Enríquez A, Herrera-Camacho I, Millán-Pérez-Peña L, Santos-López G, Rivera-Benítez JF. Comparative Review of the State of the Art in Research on the Porcine Epidemic Diarrhea Virus and SARS-CoV-2, Scope of Knowledge between Coronaviruses. Viruses 2024; 16:238. [PMID: 38400014 PMCID: PMC10892376 DOI: 10.3390/v16020238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/17/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
This review presents comparative information corresponding to the progress in knowledge of some aspects of infection by the porcine epidemic diarrhea virus (PEDV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coronaviruses. PEDV is an alphacoronavirus of great economic importance due to the million-dollar losses it generates in the pig industry. PEDV has many similarities to the SARS-CoV-2 betacoronavirus that causes COVID-19 disease. This review presents possible scenarios for SARS-CoV-2 based on the collected literature on PEDV and the tools or strategies currently developed for SARS-CoV-2 that would be useful in PEDV research. The speed of the study of SARS-CoV-2 and the generation of strategies to control the pandemic was possible due to the knowledge derived from infections caused by other human coronaviruses such as severe acute respiratory syndrome (SARS) and middle east respiratory syndrome (MERS). Therefore, from the information obtained from several coronaviruses, the current and future behavior of SARS-CoV-2 could be inferred and, with the large amount of information on the virus that causes COVID-19, the study of PEDV could be improved and probably that of new emerging and re-emerging coronaviruses.
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Affiliation(s)
- Nora H. Rosas-Murrieta
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
| | - Alan Rodríguez-Enríquez
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
- Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico
| | - Irma Herrera-Camacho
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
| | - Lourdes Millán-Pérez-Peña
- Centro de Química, Laboratorio de Bioquímica y Biología Molecular, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico; (A.R.-E.); (I.H.-C.); (L.M.-P.-P.)
| | - Gerardo Santos-López
- Centro de Investigación Biomédica de Oriente, Laboratorio de Biología Molecular y Virología, Instituto Mexicano del Seguro Social (IMSS), Metepec 74360, Mexico;
| | - José F. Rivera-Benítez
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Ciudad de México 38110, Mexico;
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Wang S, Wang Z, Li Y, Tu S, Zou J, Cheng Y, Zhang H, Suolang S, Zhou H. Generation of whole-porcine neutralizing antibodies of an alphacoronavirus by single B cell antibody technology. Antiviral Res 2023; 220:105754. [PMID: 37967753 DOI: 10.1016/j.antiviral.2023.105754] [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: 08/30/2023] [Revised: 10/17/2023] [Accepted: 11/08/2023] [Indexed: 11/17/2023]
Abstract
Porcine epidemic diarrhea virus (PEDV) is an alphacoronavirus that causes severe morbidity and mortality in piglets, resulting in substantial economic losses to the swine industry. While vaccination is currently the most effective preventive measure, existing vaccines fail to provide complete and reliable protection against PEDV infection. Consequently, there is a need to explore alternative or complementary strategies to address this issue. In this study, we utilized single B cell antibody technology to obtain a potent neutralizing antibody, C62, which specifically targets the receptor binding domain S1B of the PEDV-S1 protein. C62 exhibited potent neutralizing activity against PEDV and inhibited viral attachment to the cell surface in vitro. Furthermore, the effectiveness of C62 in mitigating PEDV infection was demonstrated in vivo, as evidenced by the delayed onset of diarrhea and reduced mortality rates observed in piglets following oral administration of C62. Our study provides an alternative approach for controlling PEDV infection. Meanwhile, C62 holds promise as a therapeutic biological agent to complement existing vaccines. More importantly, our study forms a solid foundation for the development of whole-porcine neutralizing antibodies against other swine coronaviruses, thus contributing to the overall improvement of swine health.
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Affiliation(s)
- Sheng Wang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| | - Zhichen Wang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| | - Ying Li
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| | - Shaoyu Tu
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| | - Jiahui Zou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| | - Yanqing Cheng
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| | - Huawei Zhang
- Wuhan Keqian Biological Co., Ltd, Wuhan, Hubei, PR China.
| | - Sizhu Suolang
- Department of Animal Science, Tibet Agricultural and Animal Husbandry College, Nyingchi, Tibet, PR China.
| | - Hongbo Zhou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China; Department of Animal Science, Tibet Agricultural and Animal Husbandry College, Nyingchi, Tibet, PR China; Frontiers Science Center for Animal Breeding and Sustainable Production, Wuhan, Hubei, PR China; Hubei Hongshan Laboratory, Wuhan, Hubei, PR China.
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5
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Park GN, Song S, Choe S, Shin J, An BH, Kim SY, Hyun BH, An DJ. Spike Gene Analysis and Prevalence of Porcine Epidemic Diarrhea Virus from Pigs in South Korea: 2013-2022. Viruses 2023; 15:2165. [PMID: 38005843 PMCID: PMC10674705 DOI: 10.3390/v15112165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/26/2023] Open
Abstract
From late 2013-2022, 1131 cases of porcine epidemic diarrhea (PED) were reported to the Korean Animal Health Integrated System (KAHIS). There were four major outbreaks from winter to spring (2013-2014, 2017-2018, 2018-2019, and 2021-2022), with the main outbreaks occurring in Chungnam (CN), Jeonbuk (JB), and Jeju (JJ). Analysis of the complete spike (S) gene of 140/1131 KAHIS PEDV cases nationwide confirmed that 139 belonged to the G2b genotype and 1 to the G2a genotype. Among them, two strains (K17GG1 and K17GB3) were similar to an S INDEL isolated in the United States (strain OH851), and 12 strains had deletions (nucleotides (nt) 3-99) or insertions (12 nt) within the S gene. PEDVs in JJ formed a regionally independent cluster. The substitution rates (substitutions/site/year) were as follows: 1.5952 × 10-3 in CN, 1.8065 × 10-3 in JB, and 1.5113 × 10-3 in JJ. A Bayesian skyline plot showed that the effective population size of PEDs in JJ fell from 2013-2022, whereas in CN and JB it was maintained. Genotyping of 340 Korean PEDV strains, including the 140 PEDVs in this study and 200 Korean reference strains from GenBank, revealed that only the highly pathogenic non-INDEL type (G2b) was dominant from 2020 onwards. Therefore, it is predicted that the incidence of PED will be maintained by the G2b (non-INDEL) genotype.
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Affiliation(s)
- Gyu-Nam Park
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea; (G.-N.P.); (S.S.); (S.C.); (J.S.); (S.-Y.K.); (B.-H.H.)
| | - Sok Song
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea; (G.-N.P.); (S.S.); (S.C.); (J.S.); (S.-Y.K.); (B.-H.H.)
| | - SeEun Choe
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea; (G.-N.P.); (S.S.); (S.C.); (J.S.); (S.-Y.K.); (B.-H.H.)
| | - Jihye Shin
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea; (G.-N.P.); (S.S.); (S.C.); (J.S.); (S.-Y.K.); (B.-H.H.)
| | - Byung-Hyun An
- College of Veterinary Medicine, Seoul University, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea;
| | - Song-Yi Kim
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea; (G.-N.P.); (S.S.); (S.C.); (J.S.); (S.-Y.K.); (B.-H.H.)
| | - Bang-Hun Hyun
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea; (G.-N.P.); (S.S.); (S.C.); (J.S.); (S.-Y.K.); (B.-H.H.)
| | - Dong-Jun An
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea; (G.-N.P.); (S.S.); (S.C.); (J.S.); (S.-Y.K.); (B.-H.H.)
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Niu TM, Yu LJ, Zhao JH, Zhang RR, Ata EB, Wang N, Zhang D, Yang YL, Qian JH, Chen QD, Yang GL, Huang HB, Shi CW, Jiang YL, Wang JZ, Cao X, Zeng Y, Wang N, Yang WT, Wang CF. Characterization and pathogenicity of the porcine epidemic diarrhea virus isolated in China. Microb Pathog 2023; 174:105924. [PMID: 36473667 DOI: 10.1016/j.micpath.2022.105924] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
Piglet diarrhea caused by the porcine epidemic diarrhea virus (PEDV) is a common problem on pig farms in China associated with high morbidity and mortality rates. In this study, three PEDV isolates were successfully detected after the fourth blind passage in Vero cells. The samples were obtained from infected piglet farms in Jilin (Changchun), and Shandong (Qingdao) Provinces of China and were designated as CH/CC-1/2018, CH/CC-2/2018, and CH/QD/2018. According to the analysis of the complete S protein gene sequence, the CH/CC-1/2018 and CH/CC-2/2018 were allocated to the G2b branch, while CH/QD/2018 was located in the G1a interval and was closer to the vaccine strain CV777. Successful detection and identification of the isolated strains were carried out using electron microscopy and indirect immunofluorescence. Meanwhile, animal challenge experiments and viral RNA copies determination were used to compare the pathogenicity. The results showed that CH/CC-1/2018 in Changchun was more pathogenic than CH/QD/2018 in Qingdao. In conclusion, the discovery of these new strains is conducive to the development of vaccines to prevent the pandemic of PEDV, especially that the CH/CC-1/2018, and CH/CC-2/2018 were not related to the classical vaccine strain CV777.
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Affiliation(s)
- Tian-Ming Niu
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Ling-Jiao Yu
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jin-Hui Zhao
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Rong-Rong Zhang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Emad Beshir Ata
- Parasitology and Animal Diseases Dep, Vet. Res. Institute, National Research Centre, 12622, Dokki, Cairo, Egypt
| | - Nan Wang
- Jilin Province Animal Disease Prevention and Control Center, Changchun, China
| | - Di Zhang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Yong-Lei Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jia-Hao Qian
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Qiao-Dan Chen
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Gui-Lian Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Hai-Bin Huang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Chun-Wei Shi
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Yan-Long Jiang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jian-Zhong Wang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Xin Cao
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Yan Zeng
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Nan Wang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Wen-Tao Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China.
| | - Chun-Feng Wang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of the Ministry of Education, Jilin Agricultural University, Changchun, China.
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7
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Predicted 3D model of the M protein of Porcine Epidemic Diarrhea Virus and analysis of its immunogenic potential. PLoS One 2022; 17:e0263582. [PMID: 35139120 PMCID: PMC8827446 DOI: 10.1371/journal.pone.0263582] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 01/23/2022] [Indexed: 11/19/2022] Open
Abstract
The membrane protein M of the Porcine Epidemic Diarrhea Virus (PEDV) is the most abundant component of the viral envelope. The M protein plays a central role in the morphogenesis and assembly of the virus through protein interactions of the M-M, M-Spike (S) and M-nucleocapsid (N) type. The M protein is known to induce protective antibodies in pigs and to participate in the antagonistic response of the cellular antiviral system coordinated by the type I and type III interferon pathways. The 3D structure of the PEDV M protein is still unknown. The present work exposes a predicted 3D model of the M protein generated using the Robetta protocol. The M protein model is organized into a transmembrane and a globular region. The obtained 3D model of the PEDV M protein was compared with 3D models of the SARS-CoV-2 M protein created using neural networks and with initial machine learning-based models created using trRosetta. The 3D model of the present study predicted four linear B-cell epitopes (RSVNASSGTG and KHGDYSAVSNPSALT peptides are noteworthy), six discontinuous B-cell epitopes, forty weak binding and fourteen strong binding T-cell epitopes in the CV777 M protein. A high degree of conservation of the epitopes predicted in the PEDV M protein was observed among different PEDV strains isolated in different countries. The data suggest that the M protein could be a potential candidate for the development of new treatments or strategies that activate protective cellular mechanisms against viral diseases.
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Antas M, Olech M, Szczotka-Bochniarz A. Molecular characterization of porcine epidemic diarrhoea virus (PEDV) in Poland reveals the presence of swine enteric coronavirus (SeCoV) sequence in S gene. PLoS One 2021; 16:e0258318. [PMID: 34714840 PMCID: PMC8555794 DOI: 10.1371/journal.pone.0258318] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/23/2021] [Indexed: 11/23/2022] Open
Abstract
Porcine epidemic diarrhoea (PED) is a highly contagious enteric viral disease of pigs with a high morbidity and mortality rate, which ultimately results in huge economic losses in the pig production sector. The etiological agent of this disease is the porcine epidemic diarrhoea virus (PEDV) which is an enveloped, positive single-stranded RNA virus. The aim of this study was to perform molecular characterization of PEDV to identify the strains circulating in Poland. In this study, 662 faecal samples from 2015 to 2021 were tested with reverse transcription quantitative real-time PCR (RT-qPCR) and the results showed that 3.8% of the tested samples revealed a positive result for PEDV. A phylogenetic analysis of the complete genome and complete S gene sequences showed that Polish PEDV strains belonged to the G1b (S-INDEL) subgroup and were closely related to the European PEDV strains isolated from 2014 to 2019. Furthermore, RDP4 analysis revealed that the Polish PEDV strains harboured a recombinant fragment of ~400 nt in the 5' end of S gene with PEDV and swine enteric coronavirus (SeCoV) being the major and minor parents, respectively. Antigenic analysis showed that the aa sequences of neutralizing epitopes were conserved among the Polish PEDV strains. Only one strain, #0100/5P, had a unique substitution in the COE epitope. However, Polish PEDV strains showed several substitutions, especially in the COE antigen, as compared to the classical strain CV777. To the best of our knowledge, this is the first report concerning the molecular characterization of porcine epidemic diarrhoea virus strains, as well as the first phylogenetic analysis for PEDV in Poland.
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Affiliation(s)
- Marta Antas
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - Monika Olech
- Department of Biochemistry, National Veterinary Research Institute, Puławy, Poland
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Cui JT, Qiao H, Hou CY, Zheng HH, Li XS, Zheng LL, Chen HY. Characteristics of the spike and ORF3 genes of porcine epidemic diarrhea virus in Henan and Shanxi provinces of China. Arch Virol 2020; 165:2323-2333. [PMID: 32715325 PMCID: PMC7382918 DOI: 10.1007/s00705-020-04744-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/22/2020] [Indexed: 01/09/2023]
Abstract
To investigate the epidemic characteristics of porcine epidemic diarrhea virus (PEDV), 135 clinical samples (including intestinal tissues and feces) were collected from diseased piglets during outbreaks of diarrhea from 2015 to 2019 on farms in Henan and Shanxi provinces of China where swine had been immunized with attenuated PEDV (CV777). A total of 86 clinical samples (86/135, 63.7%) were positive for PEDV by RT-PCR, and subsequently, the complete spike (S) and ORF3 genes of 32 PEDV samples were sequenced. Phylogenetic analysis showed that the 32 PEDV strains obtained in this study belonged to group 2 (pandemic variant strains) and had a close relationship to 17 Chinese strains after 2010, two South Korean strains (KNU-1305 and KNU-1807), three American strains (PC22A-P140.BI, USA/Colorado/2013, and USA/OK10240-6/2017) and a Mexican strain (PEDV/MEX/QRO/02/2017), but differed genetically from a South Korean strain (SM98), a European strain (Br1/87), a Chinese strain (LZC), and a vaccine strain (CV777). G2-a subgroup strains were the dominant pandemic variant strains circulating in Henan and Shanxi provinces of China. Furthermore, a cross-recombination event was identified in the S region of the SX/TY2/2017 strain, and the putative parental strains were the epidemic strains CH/GDGZ/2012 and CH/YZ1/2015, identified in China in 2012 and 2015, respectively. These results provide further information about PEDV evolution, which could improve our understanding of the circulation of PEDV in Henan and Shanxi provinces. This information will also be helpful for developing new strategies for prevention and control of variant strains.
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Affiliation(s)
- Jian-Tao Cui
- Zhengzhou Key Laboratory for Pig Disease Prevention and Control, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Nongye Road 63#, Zhengdong New District, Longzi Lake #15, Zhengzhou, 450046, Henan, People's Republic of China
| | - Han Qiao
- College of Life Science, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China
| | - Cheng-Yao Hou
- Zhengzhou Key Laboratory for Pig Disease Prevention and Control, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Nongye Road 63#, Zhengdong New District, Longzi Lake #15, Zhengzhou, 450046, Henan, People's Republic of China
| | - Hui-Hua Zheng
- Zhengzhou Key Laboratory for Pig Disease Prevention and Control, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Nongye Road 63#, Zhengdong New District, Longzi Lake #15, Zhengzhou, 450046, Henan, People's Republic of China
| | - Xin-Sheng Li
- Zhengzhou Key Laboratory for Pig Disease Prevention and Control, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Nongye Road 63#, Zhengdong New District, Longzi Lake #15, Zhengzhou, 450046, Henan, People's Republic of China
| | - Lan-Lan Zheng
- Zhengzhou Key Laboratory for Pig Disease Prevention and Control, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Nongye Road 63#, Zhengdong New District, Longzi Lake #15, Zhengzhou, 450046, Henan, People's Republic of China.
| | - Hong-Ying Chen
- Zhengzhou Key Laboratory for Pig Disease Prevention and Control, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Nongye Road 63#, Zhengdong New District, Longzi Lake #15, Zhengzhou, 450046, Henan, People's Republic of China.
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Than VT, Choe SE, Vu TTH, Do TD, Nguyen TL, Bui TTN, Mai TN, Cha RM, Song D, An DJ, Le VP. Genetic characterization of the spike gene of porcine epidemic diarrhea viruses (PEDVs) circulating in Vietnam from 2015 to 2016. Vet Med Sci 2020; 6:535-542. [PMID: 32159913 PMCID: PMC7397879 DOI: 10.1002/vms3.256] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 01/02/2020] [Accepted: 02/13/2020] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Porcine epidemic diarrhea (PED) is a highly contagious swine disease caused by the PED virus (PEDV), which is a member of the family Coronaviridae. Since the first outbreaks in Belgium and the United Kingdom were reported in 1971, PED has spread throughout many countries around the world and causing significant economic loss. This study was conducted to investigate the recent distribution of PEDV strains in Vietnam during the 2015-2016 seasons. METHODS A total of 30 PED-specific PCR-positive intestinal and faecal samples were collected from unvaccinated piglets in Vietnam during the 2015-2016 seasons. The full length of the spike (S) gene of these PEDV strains were analysed to determine their phylogeny and genetic relationship with other available PEDV strains globally. RESULTS Phylogenetic analysis of the complete S gene sequences revealed that the 28 Vietnamese PEDV strains collected in the northern and central regions clustered in the G2 group (both G2a and G2b sub-groups), while the other 2 PEDV strains (HUA-PED176 and HUA-PED254) collected in the southern region were clustered in the G1/G1b group/sub-group. The nucleotide (nt) and deduced amino acid (aa) analyses based on the complete S gene sequences showed that the Vietnamese PEDV strains were closely related to each other, sharing nt and aa homology of 93.2%-99.9% and 92.6%-99.9%, respectively. The N-glycosylation patterns and mutations in the antigenic region were observed in Vietnamese PEDV strains. CONCLUSIONS This study provides, for the first time, up-to-date information on viral circulation and genetic distribution, as well as evidence to assist in the development of effective PEDV vaccines in Vietnam.
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Affiliation(s)
- Van T Than
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Se-Eun Choe
- Animal and Plant Quarantine Agency, Gimcheon, Gyeongsangbukdo, Republic of Korea
| | - Thi T H Vu
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Ha Noi, Vietnam
| | - Tien D Do
- Nong Lam University, Ho Chi Minh City, Vietnam
| | - Thi L Nguyen
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Ha Noi, Vietnam
| | - Thi T N Bui
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Ha Noi, Vietnam
| | - Thi N Mai
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Ha Noi, Vietnam
| | - Ra M Cha
- Animal and Plant Quarantine Agency, Gimcheon, Gyeongsangbukdo, Republic of Korea
| | - Daesub Song
- College of Pharmacy, Korea University, Sejong, Republic of Korea
| | - Dong-Jun An
- Animal and Plant Quarantine Agency, Gimcheon, Gyeongsangbukdo, Republic of Korea
| | - Van P Le
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Ha Noi, Vietnam
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Wu Y, Li W, Zhou Q, Li Q, Xu Z, Shen H, Chen F. Characterization and pathogenicity of Vero cell-attenuated porcine epidemic diarrhea virus CT strain. Virol J 2019; 16:121. [PMID: 31660993 PMCID: PMC6819350 DOI: 10.1186/s12985-019-1232-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 10/02/2019] [Indexed: 12/02/2022] Open
Abstract
Background Porcine epidemic diarrhea virus (PEDV) has caused enormous economic losses to the global pig industry. Currently available PEDV vaccine strains have limited protective effects against PEDV variant strains. Methods In this study, the highly virulent epidemic virus strain CT was serially passaged in Vero cells for up to 120 generations (P120). Characterization of the different passages revealed that compared with P10 and P64, P120 had a higher viral titer and more obvious cytopathic effects, thereby demonstrating better cell adaptability. Results Pathogenicity experiments using P120 in piglets revealed significant reductions in clinical symptoms, histopathological lesions, and intestinal PEDV antigen distribution; the piglet survival rate in the P120 group was 100%. Furthermore, whole-genome sequencing identified 13 amino acid changes in P120, which might be responsible for the attenuated virulence of P120. Conclusions Thus, an attenuated strain was obtained via cell passaging and that this strain could be used in preparing attenuated vaccines.
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Affiliation(s)
- Yu Wu
- College of Animal Science, South China Agricultural University & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Guangzhou, 510642, People's Republic of China
| | - Wei Li
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, China
| | - Qingfeng Zhou
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, China
| | - Qunhui Li
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, China
| | - Zhichao Xu
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, China
| | - Hanqin Shen
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, China
| | - Feng Chen
- College of Animal Science, South China Agricultural University & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Guangzhou, 510642, People's Republic of China. .,Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd., Xinxing, 527400, Guangdong, China.
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Wang P, Zhu J, Liu X, Guo J, Gu X, Ruan W. Isolation and recombinant analysis of variants of porcine epidemic diarrhea virus strains from Beijing, China. Virusdisease 2019; 30:294-301. [PMID: 31179369 PMCID: PMC6531531 DOI: 10.1007/s13337-019-00513-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 02/01/2019] [Indexed: 12/18/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) is a highly infectious virus infecting pigs with high morbidity, especially for newborn piglets. Several PEDV strains were isolated from the intestinal tracts of diarrheic piglets from the Beijing area, China. Sequencing of the whole-genome of the PEDV isolates (GenBank numbers MG546687-MG546690) yielded sequences of 28033-28038 nt. The phylogenetic tree revealed that these strains from the Beijing area belonged to group II, while the vaccine strain, CV777, belonged to group I. We also determined the genetic correlation between these strains and CV777 strain. However, it showed that these strains in the Beijing area had unique mutations. The sequence identity of PEDV strains showed that these strains are most similar to these strains LZW, CH/JX-1/2013, USAIllinois972013, USAKansas1252014, CH/GDZQ/2014, SHQPYM2013, AJ1102, CHZMDZY11, KoreaK14JB01, and CHYJ130330, respectively. The possible recombination events indicate that PEDV in this studies were possibly recombinant strain formed by parent strains USAIllinois972013, KoreaK14JB01, CHYJ130330, and CHZMDZY11. These PEDV strains has been genetic recombination and mutations. The variant strains characterized in this study help to the evolutionary analysis of PEDV.
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Affiliation(s)
- Peng Wang
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206 China
| | - Jinyan Zhu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206 China
| | - Xinze Liu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206 China
| | - Jiaojiao Guo
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206 China
| | - Xuejia Gu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206 China
| | - Wenke Ruan
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, College of Animal Science and Technology, Beijing University of Agriculture, Beijing, 102206 China
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Chung HC, Nguyen VG, Le Huynh TM, Moon HJ, Kang BK, Kim SJ, Kim HK, Park SJ, Park KT, Park YH, Park BK. Molecular characterization of a Korean porcine epidemic diarrhea virus strain NB1. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2019; 83:97-103. [PMID: 31097871 PMCID: PMC6450166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/09/2018] [Indexed: 06/09/2023]
Abstract
In Korea, for the past 30 years (1987-present), porcine epidemic diarrhea (PED) has been established as an endemic situation in which multiple genogroups of classical G1 and G2b, and the recently introduced pandemic G2a, coexisted. Because of the dynamic nature of the virus, continuous field monitoring for PEDV strains is required. This study is the first to reveal prevalence of PEDV in 9 sampling provinces, with an overall detection rate of 6.70%. Porcine endemic diarrhea virus (PEDV) was present in pigs of all ages, especially in the non-PED vaccinated groups. The highest detection rate was in the finisher group (2.34%), followed by that in the newborn group (1.56%). Secondly, using Sanger sequencing, this study recovered a complete genome (28 005 nucleotides long) of NB1 strain from a farm severely affected by PED. Analyses of nucleotide and deduced amino acid sequences showed that NB1 differed from 18 other Korean PEDV mostly in 4 protein coding genes: ORF1a, ORF1b, S, and N. Two amino acid substitutions (V635E and Y681Q) in the COE and S1D neutralizing epitopes of NB1 resulted in antigenic index alteration of the adjacent sites, one of which contributed to a mutation that escaped neutralizing antibodies.
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Affiliation(s)
- Hee-Chun Chung
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Van Giap Nguyen
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Thi My Le Huynh
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Hyoung-Joon Moon
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Bo-Kyu Kang
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Sung-Jae Kim
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Hye-Kwon Kim
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Seong-Jun Park
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Kun-Taek Park
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Yong-Ho Park
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
| | - Bong-Kyun Park
- Department of Veterinary Medicine Virology Laboratory, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (H-C Chung, B-K Park); Department of Veterinary Microbiology and Infectious Diseases, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam (VG Nguyen, TML Huynh); Research Unit, Green Cross Veterinary Products, Yongin, Republic of Korea (H-J Moon, B-K Kang, S-J Kim); Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea (H-K Kim); Forensic Medicine Division, Daejeon Institute, National Forensic Service, Daejeon, 34054, Republic of Korea (S-J Park); Department of Biotechnology, Inje University, Injero 197, Kimhae-si, Gyeongsangnam-do, Korea (K-T Park); Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea (Y-H Park)
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Liu X, Zhang Q, Zhang L, Zhou P, Yang J, Fang Y, Dong Z, Zhao D, Li W, Feng J, Cui B, Zhang Y, Wang Y. A newly isolated Chinese virulent genotype GIIb porcine epidemic diarrhea virus strain: Biological characteristics, pathogenicity and immune protective effects as an inactivated vaccine candidate. Virus Res 2018; 259:18-27. [PMID: 30342075 PMCID: PMC7111334 DOI: 10.1016/j.virusres.2018.10.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/15/2018] [Accepted: 10/15/2018] [Indexed: 01/07/2023]
Abstract
A Chinese virulent genotype GIIb PEDV strain, CH/HNPJ/2017, was successfully separated and serially propagated in Vero cells. The biological characteristics and pathogenicity of PEDV strain CH/HNPJ/2017 were determined. The median pig diarrhea dose (PDD50) of Chinese PEDV strain was first determined. The immune protective effect of PEDV strain CH/HNPJ/2017 as vaccine candidates was also be evaluated.
Since October 2010, severe porcine epidemic diarrhea (PED) outbreaks caused by highly virulent PED virus (PEDV) strains have occurred continuously in the Chinese pig population and caused considerable economic losses. Although PEDV vaccines based on classical PEDV strains have been widely used in China in recent years, the morbidity and mortality in piglets remain high. Therefore, virulent genotype GII PEDV strains that are prevalent in the field should be isolated and used to develop next-generation vaccines. In the present study, a Chinese virulent genotype GIIb PEDV strain, CH/HNPJ/2017, was serially propagated in Vero cells for up to 90 passages. The S genes contained typical insertions and deletions that were also found in other recently isolated highly virulent PEDV strains from China and other countries and had two neighboring unique insertion mutations, which resulted in four amino acid changes in the S1 region of passages P10 and P60. Pig infection studies revealed that the CH/HNPJ/2017 strain was highly virulent in piglets, and the median pig diarrhea dose (PDD50) was 7.68 log10PDD50/3 mL. Furthermore, the cell-adapted CH/HNPJ/2017 strain elicited potent serum IgG and neutralizing antibody responses in immunized pigs when it was used as an inactivated vaccine candidate. In addition, the pigs that received the experimental inactivated vaccines were partially protected (3/5) against subsequent viral challenge. In brief, these data indicate that the CH/HNPJ/2017 strain is a promising candidate for developing a safe and effective PEDV vaccine in the future.
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Affiliation(s)
- Xinsheng Liu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Qiaoling Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Liping Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Peng Zhou
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Jun Yang
- Hunan Institute of Animal and Veterinary Science, Changsha, 410131, China.
| | - Yuzhen Fang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Zhaoliang Dong
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Donghong Zhao
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Weiyan Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Jiaxin Feng
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Baofeng Cui
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Yongguang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
| | - Yonglu Wang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, China.
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15
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Kim SH, Cho BH, Lee KY, Jang YS. N-terminal Domain of the Spike Protein of Porcine Epidemic Diarrhea Virus as a New Candidate Molecule for a Mucosal Vaccine. Immune Netw 2018; 18:e21. [PMID: 29984039 PMCID: PMC6026690 DOI: 10.4110/in.2018.18.e21] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/11/2018] [Accepted: 06/12/2018] [Indexed: 01/04/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) is a contagious coronavirus infecting pigs that leads to significant economic losses in the swine industry. Given that PEDV infection occurs in gut epithelial cells mainly via the fecal-oral route, induction of PEDV-specific immune responses in the mucosal compartment is required for protective immunity against viral infection. However, an effective mucosal vaccine against the currently prevalent PEDV strain is not available. In this study, we demonstrated that the N-terminal domain (NTD) of the spike (S) protein of PEDV represents a new vaccine candidate molecule to be applied via the mucosal route. We first established an Escherichia coli expression system producing the partial NTD (NTD231–501) of the PEDV S protein. Orally administered NTD231–501 protein specifically interacted with the apical area of M cells in the follicle-associated epithelium of Peyer's patch. Additionally, the NTD protein induced antigen-specific immune responses in both the systemic and mucosal immune compartments when administered orally. Collectively, we propose the NTD of the PEDV S protein to be a candidate mucosal vaccine molecule.
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Affiliation(s)
- Sae-Hae Kim
- Department of Molecular Biology and the Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju 54896, Korea
| | - Byeol-Hee Cho
- Department of Bioactive Material Sciences and Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, Korea
| | - Kyung-Yeol Lee
- Department of Oral Microbiology and Institute of Oral Bioscience, Chonbuk National University, Jeonju 54896, Korea
| | - Yong-Suk Jang
- Department of Molecular Biology and the Institute for Molecular Biology and Genetics, Chonbuk National University, Jeonju 54896, Korea.,Department of Bioactive Material Sciences and Research Center of Bioactive Materials, Chonbuk National University, Jeonju 54896, Korea
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16
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Zuo Q, Zhao R, Liu J, Zhao Q, Zhu L, Zhang B, Bi J, Yang G, Liu J, Yin G. Epidemiology and phylogeny of spike gene of porcine epidemic diarrhea virus from Yunnan, China. Virus Res 2018; 249:45-51. [PMID: 29548744 DOI: 10.1016/j.virusres.2018.03.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/10/2018] [Accepted: 03/12/2018] [Indexed: 10/17/2022]
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17
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Rattanapisit K, Srijangwad A, Chuanasa T, Sukrong S, Tantituvanont A, Mason HS, Nilubol D, Phoolcharoen W. Rapid Transient Production of a Monoclonal Antibody Neutralizing the Porcine Epidemic Diarrhea Virus (PEDV) in Nicotiana benthamiana and Lactuca sativa. PLANTA MEDICA 2017; 83:1412-1419. [PMID: 28575911 PMCID: PMC7117083 DOI: 10.1055/s-0043-112344] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/10/2017] [Accepted: 05/22/2017] [Indexed: 05/30/2023]
Abstract
Porcine epidemic diarrhea virus (PEDV) causes acute diarrhea, vomiting, dehydration, weight loss, and high mortality rate in neonatal piglets. Porcine epidemic diarrhea (PED) has been reported in Europe, America, and Asia including Thailand. The disease causes substantial losses to the swine industry in many countries. Presently, there is no effective PEDV vaccine available. In this study, we developed a plant-produced monoclonal antibody (mAb) 2C10 as a prophylactic candidate to prevent the PEDV infection. Recently, plant expression systems have gained interest as an alternative for the production of antibodies because of many advantages, such as low production cost, lack of human and animal pathogen, large scalability, etc. The 2C10 mAb was transiently expressed in Nicotiana benthamiana and lettuce using geminiviral vector. After purification by protein A affinity chromatography, the antibody was tested for the binding and neutralizing activity against PEDV. Our result showed that the plant produced 2C10 mAb can bind to the virus and also inhibit PEDV infection in vitro. These results show excellent potential for a plant-expressed 2C10 as a PEDV prophylaxis and a diagnostic for PEDV infection.
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Affiliation(s)
- Kaewta Rattanapisit
- Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Herbs and Natural Products Research Unit, CU Drug and Health Products Innovation Promotion, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | | | - Taksina Chuanasa
- Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Herbs and Natural Products Research Unit, CU Drug and Health Products Innovation Promotion, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Suchada Sukrong
- Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Herbs and Natural Products Research Unit, CU Drug and Health Products Innovation Promotion, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Angkana Tantituvanont
- Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Hugh S. Mason
- The Biodesign Institute and School of Life Sciences, Arizona State University, Tempe, AZ, USA
| | - Dachrit Nilubol
- Veterinary Microbiology, Faculty of Veterinary Science, Bangkok, Thailand
| | - Waranyoo Phoolcharoen
- Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
- Herbs and Natural Products Research Unit, CU Drug and Health Products Innovation Promotion, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
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18
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Wang C, Yan F, Zheng X, Wang H, Jin H, Wang C, Zhao Y, Feng N, Wang T, Gao Y, Yang S, Xia X. Porcine epidemic diarrhea virus virus-like particles produced in insect cells induce specific immune responses in mice. Virus Genes 2017; 53:548-554. [PMID: 28357676 PMCID: PMC7088547 DOI: 10.1007/s11262-017-1450-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/21/2017] [Indexed: 02/06/2023]
Abstract
Porcine epidemic diarrhea virus (PEDV), which causes 80-100% mortality in neonatal piglets, is one of the most devastating viral diseases affecting swine worldwide. To date, the lack of effective vaccines and drugs is the main problem preventing control of the global spread of PEDV. In this study, we produced PEDV virus-like particles (VLPs) composed of S, M, and E proteins with a baculovirus expression system and tested them via indirect immunofluorescence assay (IFA)and Western blot analysis. Electron microscopy showed that the morphological structure of the PEDV VLPs was similar to that of the protovirus. Microneutralization assays and ELISpot analysis demonstrated that PEDV VLPs induced highly specific antibody responses and Th2-mediated humoral immunity. As a result, the PEDV VLPs displayed excellent immunogenicity in mice. Therefore, a VLP-based vaccine has the potential to prevent PEDV infection.
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Affiliation(s)
- Cuiling Wang
- College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Feihu Yan
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
| | - Xuexing Zheng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- School of Public Health, Shandong University, Jinan, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Hualei Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Hongli Jin
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Chong Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yongkun Zhao
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Na Feng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Tiecheng Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Yuwei Gao
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Songtao Yang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China.
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China.
| | - Xianzhu Xia
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun, China.
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China.
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19
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Fu F, Li L, Shan L, Yang B, Shi H, Zhang J, Wang H, Feng L, Liu P. A spike-specific whole-porcine antibody isolated from a porcine B cell that neutralizes both genogroup 1 and 2 PEDV strains. Vet Microbiol 2017. [PMID: 28622871 PMCID: PMC7117570 DOI: 10.1016/j.vetmic.2017.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
PC10 is the first description of a mAb against PEDV isolated from porcine B cells. PC10 powerfully neutralizes PEDV and captures infectious PEDV virions in vitro. PC10 recognizes the conformational epitope of the native spike structure.
Porcine epidemic diarrhea (PED), caused by an alpha coronavirus, is a highly contagious disease and causes high morbidity and mortality in suckling piglets. Isolating PEDV neutralizing antibodies from porcine B cells is critical to elucidate the development of PEDV neutralizing antibodies and the protective mechanism of PEDV infection. Here, we described the isolation of a PEDV-neutralizing antibody from the B cell of a vaccinated pig. The antibody, named PC10, was demonstrated to target the conformational epitope of PEDV spike protein, specifically bind to the infected cells of PEDV genogroup 1 and 2 strains, and potently neutralize PEDV infection. PC10 neutralized PEDV infection through interfering with the viral life stages after cellular attachment instead of blocking the attachment of PEDV to cells. These results suggest that PC10 could be a promising candidate for passive protection and inform PEDV vaccine design because of its specificity and substantial neutralization potency.
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Affiliation(s)
- Fang Fu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Lin Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Lingling Shan
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Beibei Yang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongyan Shi
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Jiaoer Zhang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongfeng Wang
- Weike Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Li Feng
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China.
| | - Pinghuang Liu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China.
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