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Luo H, Liang Z, Lin J, Wang Y, Liu Y, Mei K, Zhao M, Huang S. Research progress of porcine epidemic diarrhea virus S protein. Front Microbiol 2024; 15:1396894. [PMID: 38873162 PMCID: PMC11169810 DOI: 10.3389/fmicb.2024.1396894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/13/2024] [Indexed: 06/15/2024] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) is a single-stranded RNA virus with a capsid membrane that causes acute infectious gastrointestinal disease characterized by vomiting, diarrhea, and dehydration in swine. Piglets are more susceptible to PEDV than adults, with an infection rate reaching 90% and a fatality rate as high as 100%. Moreover, PEDV has a rapid transmission rate and broad transmission range. Consequently, PEDV has caused considerable economic losses and negatively impacted the sustainability of the pig industry. The surface spike (S) glycoprotein is the largest structural protein in PEDV virions and is closely associated with host cell fusion and virus invasion. As such, the S protein is an important target for vaccine development. In this article, we review the genetic variation, immunity, apoptosis-induction function, virulence, vaccine potential, and other aspects of the PEDV S protein. This review provides a theoretical foundation for preventing and controlling PEDV infection and serves as a valuable resource for further research and development of PEDV vaccines.
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Affiliation(s)
- Haojian Luo
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Zhaoping Liang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Junjie Lin
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Yiqiao Wang
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Yingying Liu
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Kun Mei
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Mengmeng Zhao
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Shujian Huang
- School of Life Science and Engineering, Foshan University, Foshan, China
- Guangdong Hua Sheng Biotechnology Co., Ltd, Guangzhou, China
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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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Shen X, Yin L, Xu S, Wang J, Yin D, Zhao R, Pan X, Dai Y, Hou H, Zhou X, Hu X. Altered Proteomic Profile of Exosomes Secreted from Vero Cells Infected with Porcine Epidemic Diarrhea Virus. Viruses 2023; 15:1640. [PMID: 37631983 PMCID: PMC10459195 DOI: 10.3390/v15081640] [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: 06/26/2023] [Revised: 07/23/2023] [Accepted: 07/23/2023] [Indexed: 08/27/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) infection causes severe diarrhea in pigs and can be fatal in newborn piglets. Exosomes are extracellular vesicles secreted by cells that transfer biologically active proteins, lipids, and RNA to neighboring or distant cells. Herein, the morphology, particle size, and secretion of exosomes derived from a control and PEDV-infected group are examined, followed by a proteomic analysis of the exosomes. The results show that the exosomes secreted from the Vero cells had a typical cup-shaped structure. The average particle size of the exosomes from the PEDV-infected group was 112.4 nm, whereas that from the control group was 150.8 nm. The exosome density analysis and characteristic protein determination revealed that the content of exosomes in the PEDV-infected group was significantly higher than that in the control group. The quantitative proteomics assays revealed 544 differentially expressed proteins (DEPs) in the PEDV-infected group's exosomes compared with those in the controls, with 236 upregulated and 308 downregulated proteins. The DEPs were closely associated with cellular regulatory pathways, such as the phosphatidylinositol-4,5-bisphosphate 3-kinase (PI3K)-protein kinase B (Akt) signaling pathway, extracellular matrix-receptor interaction, focal adhesion, and cytoskeletal regulation. These findings provide the basis for further investigation of the pathogenic mechanisms of PEDV and the discovery of novel antiviral targets.
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Affiliation(s)
- Xuehuai Shen
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Lei Yin
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Shuangshuang Xu
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Jieru Wang
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Dongdong Yin
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Ruihong Zhao
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Xiaocheng Pan
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Yin Dai
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Hongyan Hou
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Xueli Zhou
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
| | - Xiaomiao Hu
- Livestock and Poultry Epidemic Diseases Research Center of Anhui Province, Institute of Animal Husbandry and Veterinary Science, Anhui Academy of Agricultural Science, Hefei 230031, China; (X.S.); (L.Y.); (S.X.); (J.W.); (D.Y.); (R.Z.); (Y.D.); (H.H.); (X.Z.); (X.H.)
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Hefei 230031, China
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Zhou C, Liu Y, Wei Q, Chen Y, Yang S, Cheng A, Zhang G. HSPA5 Promotes Attachment and Internalization of Porcine Epidemic Diarrhea Virus through Interaction with the Spike Protein and the Endo-/Lysosomal Pathway. J Virol 2023; 97:e0054923. [PMID: 37222617 PMCID: PMC10308931 DOI: 10.1128/jvi.00549-23] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 04/25/2023] [Indexed: 05/25/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) has caused huge economic losses to the global pig industry. The swine enteric coronavirus spike (S) protein recognizes various cell surface molecules to regulate viral infection. In this study, we identified 211 host membrane proteins related to the S1 protein by pulldown combined with liquid-chromatography tandem mass spectrometry (LC-MS/MS) analysis. Among these, heat shock protein family A member 5 (HSPA5) was identified through screening as having a specific interaction with the PEDV S protein, and positive regulation of PEDV infection was validated by knockdown and overexpression tests. Further studies verified the role of HSPA5 in viral attachment and internalization. In addition, we found that HSPA5 interacts with S proteins through its nucleotide-binding structural domain (NBD) and that polyclonal antibodies can block viral infection. In detail, HSPA5 was found to be involved in viral trafficking via the endo-/lysosomal pathway. Inhibition of HSPA5 activity during internalization would reduce the subcellular colocalization of PEDV with lysosomes in the endo-/lysosomal pathway. Together, these findings show that HSPA5 is a novel PEDV potential target for the creation of therapeutic drugs. IMPORTANCE PEDV infection causes severe piglet mortality and threatens the global pig industry. However, the complex invasion mechanism of PEDV makes its prevention and control difficult. Here, we determined that HSPA5 is a novel target for PEDV which interacts with its S protein and is involved in viral attachment and internalization, influencing its transport via the endo-/lysosomal pathway. Our work extends knowledge about the relationship between the PEDV S and host proteins and provides a new therapeutic target against PEDV infection.
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Affiliation(s)
- Chuanjie Zhou
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Yunchao Liu
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Qiang Wei
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Yumei Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Suzhen Yang
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Anchun Cheng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Gaiping Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
- Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou University, Yangzhou, China
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Si F, Song S, Yu R, Li Z, Wei W, Wu C. Coronavirus accessory protein ORF3 biology and its contribution to viral behavior and pathogenesis. iScience 2023; 26:106280. [PMID: 36945252 PMCID: PMC9972675 DOI: 10.1016/j.isci.2023.106280] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
Coronavirus porcine epidemic diarrhea virus (PEDV) is classified in the genus Alphacoronavirus, family Coronaviridae that encodes the only accessory protein, ORF3 protein. However, how ORF3 contributes to viral pathogenicity, adaptability, and replication is obscure. In this review, we summarize current knowledge and identify gaps in many aspects of ORF3 protein in PEDV, with emphasis on its unique biological features, including membrane topology, Golgi retention mechanism, potential intrinsic disordered property, functional motifs, protein glycosylation, and codon usage phenotypes related to genetic evolution and gene expression. In addition, we propose intriguing questions related to ORF3 protein that we hope to stimulate further studies and encourage collaboration among virologists worldwide to provide constructive knowledge about the unique characteristics and biological functions of ORF3 protein, by which their potential role in clarifying viral behavior and pathogenesis can be possible.
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Affiliation(s)
- Fusheng Si
- Institute of Animal Science and Veterinary Medicine, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, P.R. China
| | - Shuai Song
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture of Rural Affairs, and Key Laboratory of Animal Disease Prevention of Guangdong Province, Guangzhou 510640, P.R. China
| | - Ruisong Yu
- Institute of Animal Science and Veterinary Medicine, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, P.R. China
| | - Zhen Li
- Institute of Animal Science and Veterinary Medicine, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, P.R. China
| | - Wenqiang Wei
- Department of Microbiology, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Chao Wu
- Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, MO 63110, USA
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CCR4-NOT Complex 2—A Cofactor in Host Cell for Porcine Epidemic Diarrhea Virus Infection. Genes (Basel) 2022; 13:genes13091504. [PMID: 36140672 PMCID: PMC9498821 DOI: 10.3390/genes13091504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 11/17/2022] Open
Abstract
The porcine epidemic diarrhea virus (PEDV) has catastrophic impacts on the global pig industry. However, there is no consensus on the primary receptor associated with the PEDV invasion of host cells. An increasing number of studies have reported that PEDV invading host cells may require collaboration between multiple receptors and to better understand the virus-host interaction during PEDV entry, surface plasmon resonance (SPR) assays are performed to investigate relevant host factors interacting with PEDV spike-1 protein (S1) in Vero and IPEC-J2 cell membranes. Subsequently, the rabbit anti-PEDV S1 polyclonal antibody is used as bait to recognize the complexes of IPEC-J2 membrane proteins with or without PEDV infection, followed by detection using liquid chromatography with tandem mass spectrometry (LC-MS-MS). Our results show that 13 and 10 proteins interacting between the S1 protein and plasma membrane protein of Vero or IPEC-J2 can be identified. More specifically, a total of 11 differentially expressed interacting proteins were identified in IPEC-J2 membrane proteins after PEDV infection, compared to the uninfected group. Furthermore, we found that the differentially interacting protein CCR4-NOT complex 2 (CNOT2), identified in PEDV S1 with plasma membrane proteins of Vero cells, is involved in viral infection. The results show that the knockout of CNOT2 significantly inhibits PEDV replication in vitro. These data provide novel insights into the entry mechanism of PEDV.
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Gromova LV, Polozov AS, Savochkina EV, Alekseeva AS, Dmitrieva YV, Kornyushin OV, Gruzdkov AA. Effect of Type 2 Diabetes and Impaired Glucose Tolerance on Digestive Enzymes and Glucose Absorption in the Small Intestine of Young Rats. Nutrients 2022; 14:nu14020385. [PMID: 35057569 PMCID: PMC8779211 DOI: 10.3390/nu14020385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/10/2022] [Accepted: 01/13/2022] [Indexed: 12/10/2022] Open
Abstract
The reactions of intestinal functional parameters to type 2 diabetes at a young age remain unclear. The study aimed to assess changes in the activity of intestinal enzymes, glucose absorption, transporter content (SGLT1, GLUT2) and intestinal structure in young Wistar rats with type 2 diabetes (T2D) and impaired glucose tolerance (IGT). To induce these conditions in the T2D (n = 4) and IGT (n = 6) rats, we used a high-fat diet and a low dose of streptozotocin. Rats fed a high-fat diet (HFD) (n = 6) or a standard diet (SCD) (n = 6) were used as controls. The results showed that in T2D rats, the ability of the small intestine to absorb glucose was higher in comparison to HFD rats (p < 0.05). This was accompanied by a tendency towards an increase in the number of enterocytes on the villi of the small intestine in the absence of changes in the content of SGLT1 and GLUT2 in the brush border membrane of the enterocytes. T2D rats also showed lower maltase and alkaline phosphatase (AP) activity in the jejunal mucosa compared to the IGT rats (p < 0.05) and lower AP activity in the colon contents compared to the HFD (p < 0.05) and IGT (p < 0.05) rats. Thus, this study provides insights into the adaptation of the functional and structural parameters of the small intestine in the development of type 2 diabetes and impaired glucose tolerance in young representatives.
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Affiliation(s)
- Lyudmila V. Gromova
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova emb., 199034 Saint-Petersburg, Russia; (L.V.G.); (A.S.P.); (E.V.S.); (A.S.A.); (Y.V.D.)
| | - Alexandr S. Polozov
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova emb., 199034 Saint-Petersburg, Russia; (L.V.G.); (A.S.P.); (E.V.S.); (A.S.A.); (Y.V.D.)
| | - Elizaveta V. Savochkina
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova emb., 199034 Saint-Petersburg, Russia; (L.V.G.); (A.S.P.); (E.V.S.); (A.S.A.); (Y.V.D.)
| | - Anna S. Alekseeva
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova emb., 199034 Saint-Petersburg, Russia; (L.V.G.); (A.S.P.); (E.V.S.); (A.S.A.); (Y.V.D.)
| | - Yulia V. Dmitrieva
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova emb., 199034 Saint-Petersburg, Russia; (L.V.G.); (A.S.P.); (E.V.S.); (A.S.A.); (Y.V.D.)
| | - Oleg V. Kornyushin
- Almazov National Medical Research Center, Ministry of Health of the Russian Federation, 2 Akkuratova Str., 197341 Saint-Petersburg, Russia;
| | - Andrey A. Gruzdkov
- Pavlov Institute of Physiology, Russian Academy of Sciences, 6 Makarova emb., 199034 Saint-Petersburg, Russia; (L.V.G.); (A.S.P.); (E.V.S.); (A.S.A.); (Y.V.D.)
- Correspondence: ; Tel.: +7-960-276-3000
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Huang H, Li Y, Wang L, Song Y, Zhang G. Membrane proteomic analysis identifies the polarity protein PARD3 as a novel antiviral protein against PEDV infection. J Proteomics 2021; 253:104462. [PMID: 34954106 PMCID: PMC8695312 DOI: 10.1016/j.jprot.2021.104462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/01/2021] [Accepted: 12/17/2021] [Indexed: 11/23/2022]
Abstract
Porcine epidemic diarrhea virus (PEDV) is a highly pathogenic enteric coronavirus causing lethal watery diarrhea in suckling piglets. PEDV could remodel host membrane structures for their replication, assembly and escape from host cells. However, little is known about the host membrane proteins of PEDV infection. In this study, we analyzed differentially abundant proteins (DAPs) between PEDV infection group and control group and identified the polarity protein PARD3 as one of the most significantly DAPs. PARD3 is implicated in the formation of tight junctions at epithelial cell-cell contacts. Then, we found that PEDV infection promoted the degradation of PARD3 via the ubiquitin proteasome pathway. Moreover, knockdown of PARD3 promoted the proliferation of PEDV. Further study showed that the downregulation of PARD3 altered the normal morphology of the tight junction proteins and promoted apical and basolateral virus proliferation. Tight junctions enable epithelial cells to form physical barriers, which act as an innate immune mechanism that can impede viral infection and PEDV affected the barrier functions by causing degradation of PARD3. Taken together, this work is the first time to investigate the membrane protein profile of PEDV-infected cells using quantitative proteomics and suggests that PARD3 could be a potential novel antiviral protein against PEDV infection. Significance Membrane proteins are involved in various physiological and biochemical functions critical for cellular function. It is also dynamic in nature, where many proteins are changed during in response to environmental stress. However, membrane proteins are difficult to study because of their hydrophobicity. Membrane proteomic methods using mass spectrometry analysis have been developed and applied for the characterization of the plasma membrane and subcellular organelles of various virus infected cells. Porcine epidemic diarrhea virus (PEDV) is an enteric pathogen of importance to the swine industry, causing high mortality in neonatal piglets. Because PEDV infected Vero cells can lead to significant changes in cell membrane morphology and form syncytial lesions. Here, we isolated the membrane proteins of PEDV infected and control cells and applied isobaric tags for relative and absolute quantification (iTRAQ) labeling coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) to quantitatively identify the differentially abundant proteins (DAPs) in PEDV-infected Vero cells and confirmed the DAPs by performing RT-qPCR and Western blot analysis. Among these differential proteins, we focused on a down-regulated protein PARD3 which is important for cell tight junction and cell polarity. Loss of PARD3 can destroy the tight junction of cells and promote the proliferation of PEDV in the apical and basolateral sides. These findings will provide valuable information to better understand the mechanisms underlying the host defense responses to PEDV infection.
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Affiliation(s)
- Huimin Huang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
| | - Yongtao Li
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
| | - Li Wang
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Huayuan Road No. 116, Zhengzhou 450002, China
| | - Yapeng Song
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
| | - Gaiping Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China; Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Huayuan Road No. 116, Zhengzhou 450002, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China.
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Zhang Y, Chen H, Zou M, Oerlemans R, Shao C, Ren Y, Zhang R, Huang X, Li G, Cong Y. Hypericin Inhibit Alpha-Coronavirus Replication by Targeting 3CL Protease. Viruses 2021; 13:v13091825. [PMID: 34578406 PMCID: PMC8473218 DOI: 10.3390/v13091825] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/05/2021] [Accepted: 09/06/2021] [Indexed: 12/13/2022] Open
Abstract
The porcine epidemic diarrhea virus (PEDV) is an Alphacoronavirus (α-CoV) that causes high mortality in infected piglets, resulting in serious economic losses in the farming industry. Hypericin is a dianthrone compound that has been shown as an antiviral activity on several viruses. Here, we first evaluated the antiviral effect of hypericin in PEDV and found the viral replication and egression were significantly reduced with hypericin post-treatment. As hypericin has been shown in SARS-CoV-2 that it is bound to viral 3CLpro, we thus established a molecular docking between hypericin and PEDV 3CLpro using different software and found hypericin bound to 3CLpro through two pockets. These binding pockets were further verified by another docking between hypericin and PEDV 3CLpro pocket mutants, and the fluorescence resonance energy transfer (FRET) assay confirmed that hypericin inhibits the PEDV 3CLpro activity. Moreover, the alignments of α-CoV 3CLpro sequences or crystal structure revealed that the pockets mediating hypericin and PEDV 3CLpro binding were highly conserved, especially in transmissible gastroenteritis virus (TGEV). We then validated the anti-TGEV effect of hypericin through viral replication and egression. Overall, our results push forward that hypericin was for the first time shown to have an inhibitory effect on PEDV and TGEV by targeting 3CLpro, and it deserves further attention as not only a pan-anti-α-CoV compound but potentially also as a compound of other coronaviral infections.
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Affiliation(s)
- Yue Zhang
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
| | - Huijie Chen
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
- College of Pharmaceutical Engineering, Jilin Agriculture Science and Technology University, Jilin 132101, China
| | - Mengmeng Zou
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
| | - Rick Oerlemans
- Department of Drug Design, University of Groningen, 9713 AV Groningen, The Netherlands;
| | - Changhao Shao
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
| | - Yudong Ren
- Department of Computer Science and Technology, College of Electrical and Information Technology, Northeast Agricultural University, Harbin 150030, China;
| | - Ruili Zhang
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
| | - Xiaodan Huang
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
| | - Guangxing Li
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
- Correspondence: (G.L.); (Y.C.)
| | - Yingying Cong
- Veterinary Pathology Laboratory, College of Veterinary Medicine, Heilongjiang Key Laboratory for Animal and Comparative Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.Z.); (H.C.); (M.Z.); (C.S.); (R.Z.); (X.H.)
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, 9713 AV Groningen, The Netherlands
- Correspondence: (G.L.); (Y.C.)
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Porcine enteric coronaviruses: an updated overview of the pathogenesis, prevalence, and diagnosis. Vet Res Commun 2021; 45:75-86. [PMID: 34251560 PMCID: PMC8273569 DOI: 10.1007/s11259-021-09808-0] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 06/22/2021] [Indexed: 02/07/2023]
Abstract
The recent prevalence of coronavirus (CoV) poses a serious threat to animal and human health. Currently, porcine enteric coronaviruses (PECs), including the transmissible gastroenteritis virus (TGEV), the novel emerging swine acute diarrhoea syndrome coronavirus (SADS-CoV), porcine delta coronavirus (PDCoV), and re-emerging porcine epidemic diarrhoea virus (PEDV), which infect pigs of different ages, have caused more frequent occurrences of diarrhoea, vomiting, and dehydration with high morbidity and mortality in piglets. PECs have the potential for cross-species transmission and are causing huge economic losses in the pig industry in China and the world, which therefore needs to be urgently addressed. Accordingly, this article summarises the pathogenicity, prevalence, and diagnostic methods of PECs and provides an important reference for their improved diagnosis, prevention, and control.
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Peng JY, Punyadarsaniya D, Shin DL, Pavasutthipaisit S, Beineke A, Li G, Wu NH, Herrler G. The Cell Tropism of Porcine Respiratory Coronavirus for Airway Epithelial Cells Is Determined by the Expression of Porcine Aminopeptidase N. Viruses 2020; 12:v12111211. [PMID: 33114247 PMCID: PMC7690903 DOI: 10.3390/v12111211] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/20/2020] [Accepted: 10/22/2020] [Indexed: 02/06/2023] Open
Abstract
Porcine respiratory coronavirus (PRCoV) infects the epithelial cells in the respiratory tract of pigs, causing a mild respiratory disease. We applied air–liquid interface (ALI) cultures of well-differentiated porcine airway cells to mimic the respiratory tract epithelium in vitro and use it for analyzing the infection by PRCoV. As reported for most coronaviruses, virus entry and virus release occurred mainly via the apical membrane domain. A novel finding was that PRCoV preferentially targets non-ciliated and among them the non-mucus-producing cells. Aminopeptidase N (APN), the cellular receptor for PRCoV was also more abundantly expressed on this type of cell suggesting that APN is a determinant of the cell tropism. Interestingly, differentiation-dependent differences were found both in the expression of pAPN and the susceptibility to PRCoV infection. Cells in an early differentiation stage express higher levels of pAPN and are more susceptible to infection by PRCoV than are well-differentiated cells. A difference in the susceptibility to infection was also detected when tracheal and bronchial cells were compared. The increased susceptibility to infection of bronchial epithelial cells was, however, not due to an increased abundance of APN on the cell surface. Our data reveal a complex pattern of infection in porcine differentiated airway epithelial cells that could not be elucidated with immortalized cell lines. The results are expected to have relevance also for the analysis of other respiratory viruses.
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Affiliation(s)
- Ju-Yi Peng
- Institute of Virology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (J.-Y.P.); (D.-L.S.)
| | - Darsaniya Punyadarsaniya
- Virology and Immunology Department, Faculty of Veterinary Medicine, Mahanakorn University of Technology, Bangkok 10100, Thailand;
| | - Dai-Lun Shin
- Institute of Virology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (J.-Y.P.); (D.-L.S.)
| | - Suvarin Pavasutthipaisit
- Department of Pathology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (S.P.); (A.B.)
- Department of Pathology, Faculty of Veterinary Medicine, Mahanakorn University of Technology, Bangkok 10100, Thailand
| | - Andreas Beineke
- Department of Pathology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (S.P.); (A.B.)
| | - Guangxing Li
- College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Xiangfang District, Harbin 150000, China;
| | - Nai-Huei Wu
- Institute of Virology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (J.-Y.P.); (D.-L.S.)
- Department of Veterinary Medicine, National Taiwan University, Taipei 106, Taiwan
- Correspondence: (N.-H.W.); (G.H.)
| | - Georg Herrler
- Institute of Virology, University of Veterinary Medicine Hannover, 30559 Hannover, Germany; (J.-Y.P.); (D.-L.S.)
- Correspondence: (N.-H.W.); (G.H.)
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12
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Wu JY, Wang F, Wu ZC, Wu SL, Bao WB. Regulatory Effect of Methylation of the Porcine AQP3 Gene Promoter Region on Its Expression Level and Porcine Epidemic Diarrhea Virus Resistance. Genes (Basel) 2020; 11:genes11101167. [PMID: 33036186 PMCID: PMC7599489 DOI: 10.3390/genes11101167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/12/2020] [Accepted: 10/03/2020] [Indexed: 02/06/2023] Open
Abstract
As an important carrier for intestinal secretion and water absorption, aquaporin 3 (AQP3) is closely related to diarrhea. In this study, we investigated the mechanisms of AQP3 gene expression regulation in porcine epidemic diarrhea virus (PEDV)-induced diarrhea confirmed by PCR amplification and sequencing. Evaluation of intestinal pathology showed that diarrhea caused by PEDV infection destroyed the intestinal barrier of piglets. qPCR analysis showed that AQP3 expression in the small intestine of PEDV-infected piglets was extremely significantly decreased. qPCR and Bisulfite sequencing PCR revealed an increase in the methylation levels of both CpG islands in the AQP3 promoter region in the jejunum of PEDV-infected piglets. The methylation of mC-20 and mC-10 sites within the two CpG islands showed a significant negative correlation with AQP3 expression. Chromatin Co-Immunoprecipitation (ChIP)-PCR showed that the Sp1 transcription factor was bound to the AQP3 promoter region containing these two CpG sites. AQP3 expression was also extremely significantly reduced in Sp1-inhibited IPEC-J2 cells, indicating that abnormal methylation at the mC-20 site of CpG1 and the mC-10 site of CpG2 reduces its expression in PEDV-infected piglet jejunum by inhibiting the binding of Sp1 to the AQP3 promoter. These findings provide a theoretical basis for further functional studies of porcine AQP3.
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Affiliation(s)
- Jia-Yun Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (J.-Y.W.); (F.W.); (Z.-C.W.); (S.-L.W.)
| | - Fang Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (J.-Y.W.); (F.W.); (Z.-C.W.); (S.-L.W.)
| | - Zheng-Chang Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (J.-Y.W.); (F.W.); (Z.-C.W.); (S.-L.W.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
| | - Sheng-Long Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (J.-Y.W.); (F.W.); (Z.-C.W.); (S.-L.W.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
| | - Wen-Bin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design of Jiangsu Province, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (J.-Y.W.); (F.W.); (Z.-C.W.); (S.-L.W.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
- Correspondence: ; Tel.: +86-514-8797-9316
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Role of Porcine Aminopeptidase N and Sialic Acids in Porcine Coronavirus Infections in Primary Porcine Enterocytes. Viruses 2020; 12:v12040402. [PMID: 32260595 PMCID: PMC7232180 DOI: 10.3390/v12040402] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/24/2020] [Accepted: 04/02/2020] [Indexed: 12/13/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) and transmissible gastroenteritis virus (TGEV) have been reported to use aminopeptidase N (APN) as a cellular receptor. Recently, the role of APN as a receptor for PEDV has been questioned. In our study, the role of APN in PEDV and TGEV infections was studied in primary porcine enterocytes. After seven days of cultivation, 89% of enterocytes presented microvilli and showed a two- to five-fold higher susceptibility to PEDV and TGEV. A significant increase of PEDV and TGEV infection was correlated with a higher expression of APN, which was indicative that APN plays an important role in porcine coronavirus infections. However, PEDV and TGEV infected both APN positive and negative enterocytes. PEDV and TGEV Miller showed a higher infectivity in APN positive cells than in APN negative cells. In contrast, TGEV Purdue replicated better in APN negative cells. These results show that an additional receptor exists, different from APN for porcine coronaviruses. Subsequently, treatment of enterocytes with neuraminidase (NA) had no effect on infection efficiency of TGEV, implying that terminal cellular sialic acids (SAs) are no receptor determinants for TGEV. Treatment of TGEV with NA significantly enhanced the infection which shows that TGEV is masked by SAs.
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Tu CF, Chuang CK, Hsiao KH, Chen CH, Chen CM, Peng SH, Su YH, Chiou MT, Yen CH, Hung SW, Yang TS, Chen CM. Lessening of porcine epidemic diarrhoea virus susceptibility in piglets after editing of the CMP-N-glycolylneuraminic acid hydroxylase gene with CRISPR/Cas9 to nullify N-glycolylneuraminic acid expression. PLoS One 2019; 14:e0217236. [PMID: 31141512 PMCID: PMC6541307 DOI: 10.1371/journal.pone.0217236] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/07/2019] [Indexed: 01/03/2023] Open
Abstract
The porcine epidemic diarrhoea virus (PEDV) devastates the health of piglets but may not infect piglets whose CMP-N-glycolylneuraminic acid hydroxylase (CMAH) gene is mutated (knockouts, KO) by using CRISPR/Cas9 gene editing techniques. This hypothesis was tested by using KO piglets that were challenged with PEDV. Two single-guide RNAs targeting the CMAH gene and Cas9 mRNA were microinjected into the cytoplasm of newly fertilized eggs. Four live founders generated and proven to be biallelic KO, lacking detectable N-glycolylneuraminic acid (NGNA). The founders were bred, and homozygous offspring were obtained. Two-day-old (in exps. I, n = 6, and III, n = 15) and 3-day-old (in exp. II, n = 9) KO and wild-type (WT, same ages in respective exps.) piglets were inoculated with TCID50 1x103 PEDV and then fed 20 mL of infant formula (in exps. I and II) or sow's colostrum (in exp. III) every 4 hours. In exp. III, the colostrum was offered 6 times and was then replaced with Ringer/5% glucose solution. At 72 hours post-PEDV inoculation (hpi), the animals either deceased or euthanized were necropsied and intestines were sampled. In all 3 experiments, the piglets showed apparent outward clinical manifestations suggesting that infection occurred despite the CMAH KO. In exp. I, all 6 WT piglets and only 1 of 6 KO piglets died at 72 hpi. Histopathology and immunofluorescence staining showed that the villus epithelial cells of WT piglets were severely exfoliated, but only moderate exfoliation and enterocyte vacuolization was observed in KO piglets. In exp. II, delayed clinical symptoms appeared, yet the immunofluorescence staining/histopathologic inspection (I/H) scores of the two groups differed little. In exp. III, the animals exhibited clinical and pathological signs after inoculation similar to those in exp. II. These results suggest that porcine CMAH KO with nullified NGNA expression are not immune to PEDV but that this KO may lessen the severity of the infection and delay its occurrence.
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Affiliation(s)
- Ching-Fu Tu
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Chin-kai Chuang
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Kai-Hsuan Hsiao
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
- Department of Life Sciences, National Chung Hsing University, South Dist., Taichung, Taiwan, R.O.C
| | - Chien-Hong Chen
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Chi-Min Chen
- Division of Animal Medicine, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Su-Hei Peng
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Yu-Hsiu Su
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Ming-Tang Chiou
- Department of Veterinary Medicine, College of Veterinary Medicine, National of Science and Technology, Pingtung, Taiwan, ROC
| | - Chon-Ho Yen
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Shao-Wen Hung
- Division of Animal Industry, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
| | - Tien-Shuh Yang
- Division of Animal Technology, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan Dist., Hsinchu, Taiwan, R.O.C
- Department of Biotechnology and Animal Science, National Ilan University, Yilan, Yilan, Taiwan, R.O.C
| | - Chuan-Mu Chen
- Department of Life Sciences, National Chung Hsing University, South Dist., Taichung, Taiwan, R.O.C
- The iEGG and Animal Biotechnology Center, National Chung Hsinh University, Taichung, Taiwan, R.O.C
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15
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Koonpaew S, Teeravechyan S, Frantz PN, Chailangkarn T, Jongkaewwattana A. PEDV and PDCoV Pathogenesis: The Interplay Between Host Innate Immune Responses and Porcine Enteric Coronaviruses. Front Vet Sci 2019; 6:34. [PMID: 30854373 PMCID: PMC6395401 DOI: 10.3389/fvets.2019.00034] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/28/2019] [Indexed: 12/24/2022] Open
Abstract
Enteropathogenic porcine epidemic diarrhea virus (PEDV) and porcine deltacoronavirus (PDCoV), members of the coronavirus family, account for the majority of lethal watery diarrhea in neonatal pigs in the past decade. These two viruses pose significant economic and public health burdens, even as both continue to emerge and reemerge worldwide. The ability to evade, circumvent or subvert the host’s first line of defense, namely the innate immune system, is the key determinant for pathogen virulence, survival, and the establishment of successful infection. Unfortunately, we have only started to unravel the underlying viral mechanisms used to manipulate host innate immune responses. In this review, we gather current knowledge concerning the interplay between these viruses and components of host innate immunity, focusing on type I interferon induction and signaling in particular, and the mechanisms by which virus-encoded gene products antagonize and subvert host innate immune responses. Finally, we provide some perspectives on the advantages gained from a better understanding of host-pathogen interactions. This includes their implications for the future development of PEDV and PDCoV vaccines and how we can further our knowledge of the molecular mechanisms underlying virus pathogenesis, virulence, and host coevolution.
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Affiliation(s)
- Surapong Koonpaew
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathumthani, Thailand
| | - Samaporn Teeravechyan
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathumthani, Thailand
| | - Phanramphoei Namprachan Frantz
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathumthani, Thailand
| | - Thanathom Chailangkarn
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathumthani, Thailand
| | - Anan Jongkaewwattana
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathumthani, Thailand
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Establishment of porcine enterocyte/myofibroblast co-cultures for the growth of porcine rota- and coronaviruses. Sci Rep 2018; 8:15195. [PMID: 30315177 PMCID: PMC6185943 DOI: 10.1038/s41598-018-33305-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/26/2018] [Indexed: 12/15/2022] Open
Abstract
A stable culture of primary porcine enterocytes is necessary to study porcine enteric virus replication characteristics. Because the direct cultivation of primary porcine enterocytes is difficult, alternatives have to be considered. As subepithelial myofibroblasts secrete extracellular matrix and growth factors contributing to the attachment, proliferation and differentiation of epithelial cells, co-cultures of primary porcine enterocytes (ileocytes and colonocytes) with myofibroblasts were developed and evaluated for their susceptibility to enteric viruses. First, it was demonstrated that the co-cultured ileocytes and colonocytes were susceptible to an archival rotavirus strain RVA/pig-tc/BEL/RV277/1977/G1P[7] and different other rotavirus genotypes (fecal samples containing G5P[7], G5P[13], G9P[23], G4P[6]). Next, the TGEV Purdue strain infected both ileocytes and colonocytes whereas the Miller strain only infected ileocytes. Last, the PEDV CV777 Vero adapted and non-adapted (fecal suspension) strains could infect co-cultured ileocytes but not colonocytes. The infectivity of the CV777 Vero adapted strain was higher when the cells were cultured without fetal bovine serum and the CV777 fecal suspension only infected the ileocytes cultured without fetal bovine serum. In conclusion, a novel co-culture of porcine enterocytes with myofibroblasts was established, which can be used for the investigation of the replication of enteric viruses.
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17
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Yuan P, Yang Z, Song H, Wang K, Yang Y, Xie L, Huang S, Liu J, Ran L, Song Z. Three Main Inducers of Alphacoronavirus Infection of Enterocytes: Sialic Acid, Proteases, and Low pH. Intervirology 2018; 61:53-63. [PMID: 30176660 PMCID: PMC7179561 DOI: 10.1159/000492424] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 07/19/2018] [Indexed: 12/19/2022] Open
Abstract
Transmissible gastroenteritis virus (TGEV) and porcine epidemic diarrhea virus (PEDV) are similar coronaviruses, causing diseases characterized by vomiting, diarrhea, and death from severe dehydration in piglets. Thus, they have caused huge losses to the swine-breeding industry worldwide. Nowadays, they are easily transmitted among the continents via vehicles, equipment, and cargo. Both viruses establish an infection in porcine enterocytes in the small intestine, and their spike (S) proteins play a key role in the virus-cell binding process under unfavorable conditions when the intestine with a low pH is filled with a thick layer of mucus and proteases. Sialic acid, proteases, and low pH are three main inducers of coronavirus infection. However, the details of how sialic acid and low pH affect virus binding to the host cell are not determined, and the functions of the proteases are unknown. This review emphasizes the role of three factors in the invasion of TGEV and PEDV into porcine enterocytes and offers more insights into Alphacoronavirus infection in the intestinal environment.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Zhenhui Song
- *Zhenhui Song, PhD, Department of Veterinary Medicine, College of Animal Science, Southwest University, Chongqing 402460 (People's Republic of China), E-Mail
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Zhang J, Yim-Im W, Chen Q, Zheng Y, Schumacher L, Huang H, Gauger P, Harmon K, Li G. Identification of porcine epidemic diarrhea virus variant with a large spike gene deletion from a clinical swine sample in the United States. Virus Genes 2018; 54:323-327. [PMID: 29468451 PMCID: PMC7088737 DOI: 10.1007/s11262-018-1542-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 02/14/2018] [Indexed: 12/14/2022]
Abstract
Two genetically different porcine epidemic diarrhea virus (PEDV) strains have been identified in the USA: US prototype (also called non-S INDEL) and S INDEL PEDVs. In February 2017, a PEDV variant (USA/OK10240-8/2017) was identified in a rectal swab from a sow farm in Oklahoma, USA. Complete genome sequence analyses indicated this PEDV variant was genetically similar to US non-S INDEL strain but had a continuous 600-nt (200-aa) deletion in the N-terminal domain of the spike gene compared to non-S INDEL PEDVs. This is the first report of detecting PEDV bearing large spike gene deletion in clinical swine samples in the USA.
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Affiliation(s)
- Jianqiang Zhang
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA.
| | - Wannarat Yim-Im
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA
| | - Qi Chen
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA
| | - Ying Zheng
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA
| | - Loni Schumacher
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA
| | - Haiyan Huang
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA
| | - Phillip Gauger
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA
| | - Karen Harmon
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA
| | - Ganwu Li
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, 1850 Christensen Drive, Ames, IA, 50011, USA.
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PrabhuDas MR, Baldwin CL, Bollyky PL, Bowdish DME, Drickamer K, Febbraio M, Herz J, Kobzik L, Krieger M, Loike J, McVicker B, Means TK, Moestrup SK, Post SR, Sawamura T, Silverstein S, Speth RC, Telfer JC, Thiele GM, Wang XY, Wright SD, El Khoury J. A Consensus Definitive Classification of Scavenger Receptors and Their Roles in Health and Disease. THE JOURNAL OF IMMUNOLOGY 2017; 198:3775-3789. [PMID: 28483986 DOI: 10.4049/jimmunol.1700373] [Citation(s) in RCA: 217] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 03/13/2017] [Indexed: 02/07/2023]
Abstract
Scavenger receptors constitute a large family of proteins that are structurally diverse and participate in a wide range of biological functions. These receptors are expressed predominantly by myeloid cells and recognize a diverse variety of ligands including endogenous and modified host-derived molecules and microbial pathogens. There are currently eight classes of scavenger receptors, many of which have multiple names, leading to inconsistencies and confusion in the literature. To address this problem, a workshop was organized by the United States National Institute of Allergy and Infectious Diseases, National Institutes of Health, to help develop a clear definition of scavenger receptors and a standardized nomenclature based on that definition. Fifteen experts in the scavenger receptor field attended the workshop and, after extensive discussion, reached a consensus regarding the definition of scavenger receptors and a proposed scavenger receptor nomenclature. Scavenger receptors were defined as cell surface receptors that typically bind multiple ligands and promote the removal of nonself or altered-self targets. They often function by mechanisms that include endocytosis, phagocytosis, adhesion, and signaling that ultimately lead to the elimination of degraded or harmful substances. Based on this definition, nomenclature and classification of these receptors into 10 classes were proposed. This classification was discussed at three national meetings and input from participants at these meetings was requested. The following manuscript is a consensus statement that combines the recommendations of the initial workshop and incorporates the input received from the participants at the three national meetings.
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Affiliation(s)
- Mercy R PrabhuDas
- Division of Allergy, Immunology and Transplantation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852;
| | - Cynthia L Baldwin
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003.,Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003
| | - Paul L Bollyky
- Department of Medicine, Stanford University, Stanford, CA 94305
| | - Dawn M E Bowdish
- Department of Pathology and Molecular Medicine, McMaster Immunology Research Centre, M.G. DeGroote Institute of Infectious Disease Research, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Kurt Drickamer
- Department of Life Sciences, Imperial College, London SW7 2AZ, United Kingdom
| | - Maria Febbraio
- Department of Dentistry, Katz Group Centre for Pharmacy and Health Research, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta T6G 2E1, Canada
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390.,Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390.,Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390.,Center for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390.,Peter O'Donnell Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Lester Kobzik
- Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115
| | - Monty Krieger
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - John Loike
- Department of Physiology and Cellular Biophysics, Columbia University, New York, NY 10032
| | - Benita McVicker
- University of Nebraska Medical Center, Omaha VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105
| | - Terry K Means
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129
| | - Soren K Moestrup
- Department of Biomedicine, University of Aarhus, 8000 Aarhus C, Denmark
| | - Steven R Post
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205
| | - Tatsuya Sawamura
- Department of Physiology, Research Institute, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Samuel Silverstein
- Department of Physiology and Cellular Biophysics, Columbia University, New York, NY 10032
| | - Robert C Speth
- Department of Pharmaceutical Sciences, Nova Southeastern University, Fort Lauderdale, FL 33328
| | - Janice C Telfer
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003
| | - Geoffrey M Thiele
- Division of Rheumatology, Department of Medicine, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68105
| | - Xiang-Yang Wang
- Department of Human and Molecular Genetics, Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University School of Medicine, Richmond, VA 23298
| | - Samuel D Wright
- Cardiovascular Therapeutics, CSL Behring, King of Prussia, PA 19406; and
| | - Joseph El Khoury
- Infectious Disease Division, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129
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20
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Zhou X, Cong Y, Veenendaal T, Klumperman J, Shi D, Mari M, Reggiori F. Ultrastructural Characterization of Membrane Rearrangements Induced by Porcine Epidemic Diarrhea Virus Infection. Viruses 2017; 9:v9090251. [PMID: 28872588 PMCID: PMC5618017 DOI: 10.3390/v9090251] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 08/28/2017] [Accepted: 08/31/2017] [Indexed: 02/06/2023] Open
Abstract
The porcine epidemic diarrhea virus (PEDV) is a coronavirus (CoV) belonging to the α-CoV genus and it causes high mortality in infected sucking piglets, resulting in substantial losses in the farming industry. CoV trigger a drastic reorganization of host cell membranes to promote their replication and egression, but a detailed description of the intracellular remodeling induced by PEDV is still missing. In this study, we examined qualitatively and quantitatively, using electron microscopy, the intracellular membrane reorganization induced by PEDV over the course of an infection. With our ultrastructural approach, we reveal that, as most of CoV, PEDV initially forms double-membrane vesicles (DMVs) and convoluted membranes (CMs), which probably serve as replication/transcription platforms. Interestingly, we also found that viral particles start to form almost simultaneously in both the endoplasmic reticulum and the large virion-containing vacuoles (LVCVs), which are compartments originating from the Golgi, confirming that α-CoV assemble indistinguishably in two different organelles of the secretory pathway. Moreover, PEDV virons appear to have an immature and a mature form, similar to another α-CoV the transmissible gastroenteritis coronavirus (TGEV). Altogether, our study underlies the similarities and differences between the lifecycle of α-CoV and that of viruses belonging to other CoV subfamilies.
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Affiliation(s)
- Xingdong Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Yingying Cong
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Tineke Veenendaal
- Department of Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
| | - Judith Klumperman
- Department of Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
| | - Dongfang Shi
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Muriel Mari
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Fulvio Reggiori
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
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21
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Ko S, Gu MJ, Kim CG, Kye YC, Lim Y, Lee JE, Park BC, Chu H, Han SH, Yun CH. Rapamycin-induced autophagy restricts porcine epidemic diarrhea virus infectivity in porcine intestinal epithelial cells. Antiviral Res 2017; 146:86-95. [PMID: 28842266 PMCID: PMC7113733 DOI: 10.1016/j.antiviral.2017.08.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 07/16/2017] [Accepted: 08/15/2017] [Indexed: 12/22/2022]
Abstract
Porcine epidemic diarrhea virus (PEDV) invades porcine intestinal epithelial cells (IECs) and causes diarrhea and dehydration in pigs. In the present study, we showed a suppression of PEDV infection in porcine jejunum intestinal epithelial cells (IPEC-J2) by an increase in autophagy. Autophagy was activated by rapamycin at a dose that does not affect cell viability and tight junction permeability. The induction of autophagy was examined by LC3I/LC3II conversion. To confirm the autophagic-flux (entire autophagy pathway), autophagolysosomes were examined by an immunofluorescence assay. Pre-treatment with rapamycin significantly restricted not only a 1 h infection but also a longer infection (24 h) with PEDV, while this effect disappeared when autophagy was blocked. Co-localization of PEDV and autophagosomes suggests that PEDV could be a target of autophagy. Moreover, alleviation of PEDV-induced cell death in IPEC-J2 cells pretreated with rapamycin demonstrates a protective effect of rapamycin against PEDV-induced epithelial cell death. Collectively, the present study suggests an early prevention against PEDV infection in IPEC-J2 cells via autophagy that might be an effective strategy for the restriction of PEDV, and opens up the possibility of the use of rapamycin in vivo as an effective prophylactic and prevention treatment. Rapamycin has an antiviral effect against PEDV infection. Rapamycin prevents PEDV-induced cell death. Rapamycin-induced autophagy restricted PEDV infection in porcine intestinal epithelial cells.
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Affiliation(s)
- Seongyeol Ko
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Min Jeong Gu
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Cheol Gyun Kim
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoon Chul Kye
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Younggap Lim
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji Eun Lee
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Byung-Chul Park
- Institute of Green Bio Science Technology, Seoul National University, Pyeongchang 23254, Republic of Korea
| | - Hyuk Chu
- Division of Zoonoses, Center for Immunology and Pathology, National Institute of Health, Korea Centers for Disease Control and Prevention, Osong 28159, Republic of Korea
| | - Seung Hyun Han
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea; Institute of Green Bio Science Technology, Seoul National University, Pyeongchang 23254, Republic of Korea.
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22
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Cell Attachment Domains of the Porcine Epidemic Diarrhea Virus Spike Protein Are Key Targets of Neutralizing Antibodies. J Virol 2017; 91:JVI.00273-17. [PMID: 28381581 DOI: 10.1128/jvi.00273-17] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 03/24/2017] [Indexed: 01/12/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) causes enteric disease in pigs, resulting in significant economic losses to the swine industry worldwide. Current vaccination approaches against this emerging coronavirus are only partially effective, though natural infection protects pigs against reinfection and provides lactogenic immunity to suckling piglets. The viral spike (S) glycoprotein, responsible for receptor binding and cell entry, is the major target for neutralizing antibodies. However, knowledge of antibody epitopes, their nature and location in the spike structure, and the mechanisms by which the antibodies interfere with infection is scarce. Here we describe the generation and characterization of 10 neutralizing and nonneutralizing mouse monoclonal antibodies raised against the S1 receptor binding subunit of the S protein. By expression of different S1 protein fragments, six antibody epitope classes distributed over the five structural domains of the S1 subunit were identified. Characterization of antibodies for cross-reactivity and cross-neutralization revealed antigenic differences among PEDV strains. The epitopes of potent neutralizing antibodies segregated into two epitope classes and mapped within the N-terminal sialic acid binding domain and in the more C-terminal receptor binding domain. Antibody neutralization escape mutants displayed single amino acid substitutions that impaired antibody binding and neutralization and defined the locations of the epitopes. Our observations picture the antibody epitope landscape of the PEDV S1 subunit and reveal that its cell attachment domains are key targets of neutralizing antibodies.IMPORTANCE Porcine epidemic diarrhea virus (PEDV), an emerging porcine coronavirus, causes an economically important enteric disease in pigs. Effective PEDV vaccines for disease control are currently lacking. The spike (S) glycoprotein on the virion surface is the key player in virus cell entry and, therefore, the main target of neutralizing antibodies. To understand the antigenic landscape of the PEDV spike protein, we developed monoclonal antibodies against the spike protein's S1 receptor binding region and characterized their epitopes, neutralizing activity, and cross-reactivity toward multiple PEDV strains. Epitopes of antibodies segregated into six epitope classes dispersed over the multidomain S1 structure. Monoclonal antibodies revealed antigenic variability in B-cell epitopes between PEDV strains. The epitopes of neutralizing antibodies mapped to two distinct domains in S1 that are involved in binding to carbohydrate and proteinaceous cell surface molecules, respectively, indicating the importance of these cell attachment sites on the PEDV spike protein in eliciting a protective humoral immune response.
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23
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Li W, Luo R, He Q, van Kuppeveld FJM, Rottier PJM, Bosch BJ. Aminopeptidase N is not required for porcine epidemic diarrhea virus cell entry. Virus Res 2017; 235:6-13. [PMID: 28363778 PMCID: PMC7114539 DOI: 10.1016/j.virusres.2017.03.018] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/23/2017] [Accepted: 03/24/2017] [Indexed: 12/14/2022]
Abstract
Overexpression of porcine APN in cells does not confer susceptibility to PEDV. Knockout APN expression in PEDV-susceptible cells has no effect on PEDV infection. Results demonstrate that APN is not essential for PEDV cell entry.
Porcine epidemic diarrhea virus (PEDV) is an emerging pathogenic coronavirus that causes a significant economic burden to the swine industry. The virus infects the intestinal epithelium and causes villous atrophy, resulting in diarrhea and dehydration. Interaction of the viral spike (S) surface glycoprotein − through its S1 subunit − with the host cell receptor is the first step in infection and the main determinant for virus tropism. As for several other alphacoronaviruses including the porcine transmissible gastroenteritis virus (TGEV) and the human coronavirus 229E (HCoV-229E), the aminopeptidase N (APN) protein was reported to be a functional receptor for PEDV. In this study we examined the role of APN as a receptor. We show that overexpression of porcine APN renders MDCK cells susceptible to TGEV, but not to PEDV. Consistently, unlike TGEV-S1, PEDV-S1 exhibited no binding to cell-surface expressed APN or to a soluble version of APN. Moreover, preincubation of these viruses with soluble APN or pretreatment of APN expressing ST cells with soluble TGEV-S1 blocked TGEV infection, but had no effect on infection by PEDV. The combined observations indicated that APN is not required for PEDV infection. To definitively prove this conclusion, we applied CRISPR/Cas9 genome engineering to knock out APN expression in PEDV-susceptible porcine (ST) and human cell lines (Huh7 and HeLa). As a consequence these cells no longer bound TGEV-S1 and HCoV-229E-S1 at their surface and were resistant to infection by the corresponding viruses. However, genetic ablation of APN expression had no effect on their infectability by PEDV, demonstrating that APN is not essential for PEDV cell entry.
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Affiliation(s)
- Wentao Li
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Rui Luo
- State Key laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei Province, China
| | - Qigai He
- State Key laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei Province, China
| | - Frank J M van Kuppeveld
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Peter J M Rottier
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Berend-Jan Bosch
- Virology Division, Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
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24
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Teeravechyan S, Frantz PN, Wongthida P, Chailangkarn T, Jaru-Ampornpan P, Koonpaew S, Jongkaewwattana A. Deciphering the biology of porcine epidemic diarrhea virus in the era of reverse genetics. Virus Res 2016; 226:152-171. [PMID: 27212685 PMCID: PMC7114553 DOI: 10.1016/j.virusres.2016.05.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/04/2016] [Accepted: 05/04/2016] [Indexed: 01/01/2023]
Abstract
Emergence of the porcine epidemic diarrhea virus (PEDV) as a global threat to the swine industry underlies the urgent need for deeper understanding of this virus. To date, we have yet to identify functions for all the major gene products, much less grasp their implications for the viral life cycle and pathogenic mechanisms. A major reason is the lack of genetic tools for studying PEDV. In this review, we discuss the reverse genetics approaches that have been successfully used to engineer infectious clones of PEDV as well as other potential and complementary methods that have yet to be applied to PEDV. The importance of proper cell culture for successful PEDV propagation and maintenance of disease phenotype are addressed in our survey of permissive cell lines. We also highlight areas of particular relevance to PEDV pathogenesis and disease that have benefited from reverse genetics studies and pressing questions that await resolution by such studies. In particular, we examine the spike protein as a determinant of viral tropism, entry and virulence, ORF3 and its association with cell culture adaptation, and the nucleocapsid protein and its potential role in modulating PEDV pathogenicity. Finally, we conclude with an exploration of how reverse genetics can help mitigate the global impact of PEDV by addressing the challenges of vaccine development.
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Affiliation(s)
- Samaporn Teeravechyan
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, 12120 Thailand
| | - Phanramphoei Namprachan Frantz
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, 12120 Thailand
| | - Phonphimon Wongthida
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, 12120 Thailand
| | - Thanathom Chailangkarn
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, 12120 Thailand
| | - Peera Jaru-Ampornpan
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, 12120 Thailand
| | - Surapong Koonpaew
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, 12120 Thailand
| | - Anan Jongkaewwattana
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani, 12120 Thailand.
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25
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Choudhury B, Dastjerdi A, Doyle N, Frossard JP, Steinbach F. From the field to the lab - An European view on the global spread of PEDV. Virus Res 2016; 226:40-49. [PMID: 27637348 PMCID: PMC7114520 DOI: 10.1016/j.virusres.2016.09.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 09/05/2016] [Accepted: 09/08/2016] [Indexed: 12/31/2022]
Abstract
Porcine Epidemic Diarrhea Virus (PEDV) is a member of the genus Alphacoronavirus, in the family Coronaviridae, of the Nidovirales order and outbreaks of porcine epidemic diarrhoea (PED) were first recorded in England in the 1970s. Intriguingly the virus has since successfully made its way around the globe, while seemingly becoming extinct in parts of Europe before its recent return from Northern America. In this review we are re-evaluating the spread of PEDV, its biology and are looking at lessons learnt from both failure and success. While a new analysis of PEDV genomes demonstrates a wider heterogeneity of PEDV than previously anticipated with at least five rather than two genotypes, biological features of the virus and its replication also point towards credible control strategies to limit the impact of this re-emerging virus.
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Affiliation(s)
- Bhudipa Choudhury
- Virology Department, Animal and Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, United Kingdom
| | - Akbar Dastjerdi
- Virology Department, Animal and Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, United Kingdom
| | - Nicole Doyle
- Virology Department, Animal and Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, United Kingdom
| | - Jean-Pierre Frossard
- Virology Department, Animal and Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, United Kingdom
| | - Falko Steinbach
- Virology Department, Animal and Plant Health Agency, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB, United Kingdom.
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Kamau AN, Park JE, Park ES, Yu JE, Rho J, Shin HJ. Porcine amino peptidase N domain VII has critical role in binding and entry of porcine epidemic diarrhea virus. Virus Res 2016; 227:150-157. [PMID: 27732876 PMCID: PMC7114530 DOI: 10.1016/j.virusres.2016.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 10/05/2016] [Accepted: 10/06/2016] [Indexed: 01/01/2023]
Abstract
To gain insights into mechanisms of PEDV-pAPN interactions, the present study aimed at identifying the domain that is critical for PEDV binding. Results showed PEDV infection was restricted to pAPN domain VII expressing NIH3T3 cells. PEDV harvested from pAPN or domain VII expressing NIH3T3 cells was induced indirect plaques in Vero cells. Our results demonstrate that PEDV recognizes pAPN and that the main interactive point is lodged within domain VII of the pAPN.
Porcine epidemic diarrhea virus (PEDV) infects swine intestinal cells causing enteric disease. Research has shown that the entry into these cells is through porcine aminopeptidase N (pAPN) receptor. To gain insights into mechanisms of PEDV-pAPN interactions, the present study aimed at identifying the domain that is critical for PEDV binding. To this end, NIH3T3 cell lines constitutively expressing pAPN or pAPN mutants were generated. The mutants were; domain VII deletion mutant and domains IV–VI deletion mutant. In the latter, domain VII was linked to the transmembrane segment through domain III. Results showed PEDV infection was restricted to pAPN and pAPN domain VII expressing NIH3T3 cells. Further, reducing PEDV titre 10 fold resulted in 37.8% decrease in foci indicating positive correlation. A time course test at 12, 24, 36, 48 and 60 h showed that foci increased 6 fold in the overall time range. Also, PEDV harvested from pAPN or domain VII expressing NIH3T3 cells was induced indirect plaques in Vero cells confirming successful entry and replication. Collectively, our results demonstrate that PEDV recognizes pAPN and that the main interactive point is lodged within domain VII of the pAPN. These findings are important for therapeutic development as well as creating a platform for future studies on PEDV.
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Affiliation(s)
- Anthony Ndirangu Kamau
- Laboratory of Infectious Diseases, College of Veterinary Medicine, Chungnam National University, 220 Gungdong, Yuseong, Daejeon, 305-764, Republic of Korea
| | - Jung-Eun Park
- Laboratory of Infectious Diseases, College of Veterinary Medicine, Chungnam National University, 220 Gungdong, Yuseong, Daejeon, 305-764, Republic of Korea
| | - Eui-Soon Park
- Department of Microbiology & Molecular Biology College of Bioscience & Biotechnology, 220 Gungdong, Yuseong, Daejeon, 305-764, Republic of Korea
| | - Jung-Eun Yu
- Department of Microbiology & Molecular Biology College of Bioscience & Biotechnology, 220 Gungdong, Yuseong, Daejeon, 305-764, Republic of Korea
| | - Jaerang Rho
- Department of Microbiology & Molecular Biology College of Bioscience & Biotechnology, 220 Gungdong, Yuseong, Daejeon, 305-764, Republic of Korea
| | - Hyun-Jin Shin
- Laboratory of Infectious Diseases, College of Veterinary Medicine, Chungnam National University, 220 Gungdong, Yuseong, Daejeon, 305-764, Republic of Korea; Research Institute of Veterinary Medicine, 220 Gungdong, Yuseong, Daejeon, 305-764, Republic of Korea.
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27
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Shirato K, Maejima M, Islam MT, Miyazaki A, Kawase M, Matsuyama S, Taguchi F. Porcine aminopeptidase N is not a cellular receptor of porcine epidemic diarrhea virus, but promotes its infectivity via aminopeptidase activity. J Gen Virol 2016; 97:2528-2539. [PMID: 27449937 DOI: 10.1099/jgv.0.000563] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV), a causative agent of pig diarrhoea, has recently caused significant economic damage worldwide. Porcine aminopeptidase N (pAPN) has been reported to be the receptor for PEDV, although robust evidence is lacking. In the present study, we explored whether pAPN functions as a receptor for PEDV. Human HeLa cells expressing pAPN and pAPN-positive porcine CPK cells failed to support PEDV infection, but were susceptible to infection by transmissible gastroenteritis virus (TGEV), which utilizes pAPN as a functional receptor. In contrast to TGEV, PEDV did not bind soluble porcine aminopeptidases (pAPs) and infection was not inhibited by the soluble form of pAPs. However, overexpression of pAPN in porcine CPK cells (CPK-pAPN cells) slightly increased the production of PEDV, and the increased replication in CPK-pAPN cells was inhibited by bestatin, an inhibitor of the protease activity of aminopeptidase N. These results suggest that pAPN is not a functional receptor for PEDV, but promotes the infection of PEDV through its protease activity.
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Affiliation(s)
- Kazuya Shirato
- Laboratory of Acute Respiratory Viral Diseases and Cytokines, Department of Virology III, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | - Madoka Maejima
- Laboratory of Acute Respiratory Viral Diseases and Cytokines, Department of Virology III, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | - Md Taimur Islam
- Laboratory of Virology and Viral Infections, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Ayako Miyazaki
- Viral Diseases and Epidemiology Research Division, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Miyuki Kawase
- Laboratory of Acute Respiratory Viral Diseases and Cytokines, Department of Virology III, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | - Shutoku Matsuyama
- Laboratory of Acute Respiratory Viral Diseases and Cytokines, Department of Virology III, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
| | - Fumihiro Taguchi
- Laboratory of Virology and Viral Infections, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan.,Laboratory of Acute Respiratory Viral Diseases and Cytokines, Department of Virology III, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama, Tokyo 208-0011, Japan
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Zhang Q, Shi K, Yoo D. Suppression of type I interferon production by porcine epidemic diarrhea virus and degradation of CREB-binding protein by nsp1. Virology 2016; 489:252-68. [PMID: 26773386 PMCID: PMC7111358 DOI: 10.1016/j.virol.2015.12.010] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 10/20/2015] [Accepted: 12/19/2015] [Indexed: 12/25/2022]
Abstract
Type I interferons (IFN-α/β) are the major components of the innate immune response of hosts, and in turn many viruses have evolved to modulate the host response during infection. We found that the IFN-β production was significantly suppressed during PEDV infection in cells. To identify viral IFN antagonists and to study their suppressive function, viral coding sequences for the entire structural and nonstructural proteins were cloned and expressed. Of 16 PEDV nonstructural proteins (nsps), nsp1, nsp3, nsp7, nsp14, nsp15 and nsp16 were found to inhibit the IFN-β and IRF3 promoter activities. The sole accessory protein ORF3, structure protein envelope (E), membrane (M), and nucleocapsid (N) protein were also shown to inhibit such activities. PEDV nsp1 did not interfere the IRF3 phosphorylation and nuclear translocation but interrupted the enhanceosome assembly of IRF3 and CREB-binding protein (CBP) by degrading CBP. A further study showed that the CBP degradation by nsp1 was proteasome-dependent. Our data demonstrate that PEDV modulates the host innate immune responses by degrading CBP and suppressing ISGs expression.
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Affiliation(s)
- Qingzhan Zhang
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana 61802, IL, USA
| | - Kaichuang Shi
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana 61802, IL, USA
| | - Dongwan Yoo
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana 61802, IL, USA.
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Cao L, Ge X, Gao Y, Herrler G, Ren Y, Ren X, Li G. Porcine epidemic diarrhea virus inhibits dsRNA-induced interferon-β production in porcine intestinal epithelial cells by blockade of the RIG-I-mediated pathway. Virol J 2015; 12:127. [PMID: 26283628 PMCID: PMC4539884 DOI: 10.1186/s12985-015-0345-x] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 07/21/2015] [Indexed: 12/17/2022] Open
Abstract
Background The lack of optimal porcine cell lines has severely impeded the study and progress in elucidation of porcine epidemic diarrhea virus (PEDV) pathogenesis. Vero cell, an African green monkey kidney cell line, was often used to isolate and propagate PEDV. Nonetheless, the target cells of PEDV in vivo are intestinal epithelial cells, during infection, intestinal epithelia would be damaged and resulted in digestive disorders. The immune functions of porcine epithelial cells and interactions with other immune cell populations display a number of differences compared to other species. Type I interferon (IFN) plays an important role in antiviral immune response. Limited reports showed that PEDV could inhibit type I interferon production. In this study, porcine small intestinal epithelial cells (IECs), the target cells of PEDV, were used as the infection model in vitro to identify the possible molecular mechanisms of PEDV-inhibition IFN-β production. Results PEDV not only failed to induce IFN-β expression, but also inhibited dsRNA-mediated IFN-β production in IECs. As the key IFN-β transcription factors, we found that dsRNA-induced activation of IFN regulatory factor 3 (IRF-3) was inhibited after PEDV infection, but not nuclear factor-kappaB (NF-κB). To identify the mechanism of PEDV intervention with dsRNA-mediated IFN-β expression more accurately, the role of individual molecules of RIG-I signaling pathway were investigated. In the upstream of IRF-3, TANK-binding kinase 1 (TBK1)-or inhibitor of κB kinase-ε (IKKε)-mediated IFN-β production was not blocked by PEDV, while RIG-I-and its adapter molecule IFN-β promoter stimulator 1 (IPS-1)-mediated IFN-β production were completely inhibited after PEDV infection. Conclusion Taken together, our data demonstrated for the first time that PEDV infection of its target cell line, IECs, inhibited dsRNA-mediated IFN-β production by blocking the activation of IPS-1 in RIG-I-mediated pathway. Our studies offered new visions in understanding of the interaction between PEDV and host innate immune system.
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Affiliation(s)
- Liyan Cao
- College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Xiangfang District, Harbin, 150030, China.
| | - Xuying Ge
- College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Xiangfang District, Harbin, 150030, China.
| | - Yu Gao
- College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Xiangfang District, Harbin, 150030, China.
| | - Georg Herrler
- Institute of Virology University of Veterinary Medicine, BÜnteweg 17, D-30559, Hannover, Germany.
| | - Yudong Ren
- College of Electrical and Information, Northeast Agricultural University, Harbin, 150030, China.
| | - Xiaofeng Ren
- College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Xiangfang District, Harbin, 150030, China.
| | - Guangxing Li
- College of Veterinary Medicine, Northeast Agricultural University, 59 Mucai Street, Xiangfang District, Harbin, 150030, China.
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Jengarn J, Wongthida P, Wanasen N, Frantz PN, Wanitchang A, Jongkaewwattana A. Genetic manipulation of porcine epidemic diarrhoea virus recovered from a full-length infectious cDNA clone. J Gen Virol 2015; 96:2206-2218. [PMID: 25979733 DOI: 10.1099/vir.0.000184] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Porcine epidemic diarrhoea virus (PEDV) causes acute diarrhoea and dehydration in swine of all ages, with significant mortality in neonatal pigs. The recent rise of PEDV outbreaks in Asia and North America warrants an urgent search for effective vaccines. However, PEDV vaccine research has been hampered by difficulties in isolating and propagating the virus in mammalian cells, thereby complicating the recovery of infectious PEDV using a full-length infectious clone. Here, we engineered VeroE6 cells to stably express porcine aminopeptidase N (pAPN) and used them as a platform to obtain a high-growth variant of PEDV, termed PEDVAVCT12. Subsequently, the full-length cDNA clone was constructed by assembling contiguous cDNA fragments encompassing the complete genome of PEDVAVCT12 in a bacterial artificial chromosome. Infectious PEDV could be recovered, and the rescued virus displayed phenotypic properties identical to the parental virus. Interestingly, we found that PEDVAVCT12 contained a C-terminal deletion of the spike gene, resulting in disruption of the ORF3 start codon. When a functional ORF3 gene was restored, the recombinant virus could not be rescued, suggesting that ORF3 could suppress PEDV replication in vitro. In addition, a high-growth and genetically stable recombinant PEDV expressing a foreign protein could be rescued by replacing the ORF3 gene with the mCherry gene. Together, the results of this study provide a means to generate genetically defined PEDV as a promising vaccine candidate.
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Affiliation(s)
- Juggragarn Jengarn
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
| | - Phonphimon Wongthida
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
| | - Nanchaya Wanasen
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
| | - Phanramphoei Namprachan Frantz
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
| | - Asawin Wanitchang
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
| | - Anan Jongkaewwattana
- Virology and Cell Technology Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand
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