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Shum MHH, Lee Y, Tam L, Xia H, Chung OLW, Guo Z, Lam TTY. Binding affinity between coronavirus spike protein and human ACE2 receptor. Comput Struct Biotechnol J 2024; 23:759-770. [PMID: 38304547 PMCID: PMC10831124 DOI: 10.1016/j.csbj.2024.01.009] [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: 09/15/2023] [Revised: 01/14/2024] [Accepted: 01/15/2024] [Indexed: 02/03/2024] Open
Abstract
Coronaviruses (CoVs) pose a major risk to global public health due to their ability to infect diverse animal species and potential for emergence in humans. The CoV spike protein mediates viral entry into the cell and plays a crucial role in determining the binding affinity to host cell receptors. With particular emphasis on α- and β-coronaviruses that infect humans and domestic animals, current research on CoV receptor use suggests that the exploitation of the angiotensin-converting enzyme 2 (ACE2) receptor poses a significant threat for viral emergence with pandemic potential. This review summarizes the approaches used to study binding interactions between CoV spike proteins and the human ACE2 (hACE2) receptor. Solid-phase enzyme immunoassays and cell binding assays allow qualitative assessment of binding but lack quantitative evaluation of affinity. Surface plasmon resonance, Bio-layer interferometry, and Microscale Thermophoresis on the other hand, provide accurate affinity measurement through equilibrium dissociation constants (KD). In silico modeling predicts affinity through binding structure modeling, protein-protein docking simulations, and binding energy calculations but reveals inconsistent results due to the lack of a standardized approach. Machine learning and deep learning models utilize simulated and experimental protein-protein interaction data to elucidate the critical residues associated with CoV binding affinity to hACE2. Further optimization and standardization of existing approaches for studying binding affinity could aid pandemic preparedness. Specifically, prioritizing surveillance of CoVs that can bind to human receptors stands to mitigate the risk of zoonotic spillover.
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Affiliation(s)
- Marcus Ho-Hin Shum
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, China
- School of Public Health, The University of Hong Kong, Hong Kong, China
- Laboratory of Data Discovery for Health (D24H), Hong Kong Science Park, Hong Kong, China
| | - Yang Lee
- School of Public Health, The University of Hong Kong, Hong Kong, China
- Centre for Immunology and Infection (C2i), Hong Kong Science Park, Hong Kong, China
| | - Leighton Tam
- School of Public Health, The University of Hong Kong, Hong Kong, China
- Laboratory of Data Discovery for Health (D24H), Hong Kong Science Park, Hong Kong, China
| | - Hui Xia
- Department of Chemistry, South University of Science and Technology of China, China
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Oscar Lung-Wa Chung
- Department of Chemistry, South University of Science and Technology of China, China
| | - Zhihong Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Tommy Tsan-Yuk Lam
- State Key Laboratory of Emerging Infectious Diseases, The University of Hong Kong, Hong Kong, China
- School of Public Health, The University of Hong Kong, Hong Kong, China
- Laboratory of Data Discovery for Health (D24H), Hong Kong Science Park, Hong Kong, China
- Centre for Immunology and Infection (C2i), Hong Kong Science Park, Hong Kong, China
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Xiao W, Chen C, Xia S, Li Z, Ding T, Zhou J, Fang L, Fang P, Xiao S. Cell-surface d-glucuronyl C5-epimerase binds to porcine deltacoronavirus spike protein facilitating viral entry. J Virol 2024; 98:e0088024. [PMID: 39078176 PMCID: PMC11334431 DOI: 10.1128/jvi.00880-24] [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: 05/19/2024] [Accepted: 07/03/2024] [Indexed: 07/31/2024] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an emerging swine enteric coronavirus with zoonotic potential. The coronavirus spike (S) glycoprotein, especially the S1 subunit, mediates viral entry by binding to cellular receptors. However, the functional receptor of PDCoV remains poorly understood. In this study, we used the soluble PDCoV S1 protein as bait to capture the S1-binding cellular transmembrane proteins in combined immunoprecipitation and mass spectrometry analyses. A single guide RNA screen identified d-glucuronyl C5-epimerase (GLCE), a heparan sulfate-modifying enzyme, as a proviral host factor for PDCoV infection. GLCE knockout significantly inhibited the attachment and internalization stages of PDCoV infection. We also demonstrated the interaction between GLCE and PDCoV S with coimmunoprecipitation in both an overexpression system and PDCoV-infected cells. GLCE could be localized to the cell membrane, and an anti-GLCE antibody suppressed PDCoV infection. Although GLCE expression alone did not render nonpermissive cells susceptible to PDCoV infection, GLCE promoted the binding of PDCoV S to porcine amino peptidase N (pAPN), acting synergistically with pAPN to enhance PDCoV infection. In conclusion, our results demonstrate that GLCE is a novel cell-surface factor facilitating PDCoV entry and provide new insights into PDCoV infection. IMPORTANCE The identification of viral receptors is of great significance, potentially extending our understanding of viral infection and pathogenesis. Porcine deltacoronavirus (PDCoV) is an emerging enteropathogenic coronavirus with the potential for cross-species transmission. However, the receptors or coreceptors of PDCoV are still poorly understood. The present study confirms that d-glucuronyl C5-epimerase (GLCE) is a positive regulator of PDCoV infection, promoting viral attachment and internalization. The anti-GLCE antibody suppressed PDCoV infection. Mechanically, GLCE interacts with PDCoV S and promotes the binding of PDCoV S to porcine amino peptidase N (pAPN), acting synergistically with pAPN to enhance PDCoV infection. This work identifies GLCE as a novel cell-surface factor facilitating PDCoV entry and paves the way for further insights into the mechanisms of PDCoV infection.
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Affiliation(s)
- Wenwen Xiao
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Chaoqun Chen
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Sijin Xia
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Zhuang Li
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Tong Ding
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Junwei Zhou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Liurong Fang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Puxian Fang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Shaobo Xiao
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
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Han F, Shan F, Hou J, Guo D, Xiang Y, Yuan J, Wei Z. Establishment and application of PDCoV antigen-specific DAS-ELISA detection method. BMC Vet Res 2024; 20:342. [PMID: 39095820 PMCID: PMC11295301 DOI: 10.1186/s12917-024-04201-w] [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: 05/21/2024] [Accepted: 07/22/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Porcine deltacoronavirus (PDCoV) is a swine enteropathogenic coronavirus that affects young pigs, causing vomiting, acute diarrhea, dehydration, and even death. There is growing evidence that PDCoV can undergo cross-species as well as zoonotic transmissions. Due to the frequent outbreaks of this deadly virus, early detection is essential for effective prevention and control. Therefore, developing a more convenient and reliable method for PDCoV detection is the need of the hour. RESULTS This study utilized a high-affinity monoclonal antibody as the capture antibody and a horseradish peroxidase labeled polyclonal antibody as the detection antibody to develop an enzyme-linked immunosorbent assay (DAS-ELSA) for PDCoV detection.Both antibodies target the PDCoV nucleocapsid (N) protein. The findings of this study revealed that DAS-ELISA was highly specific to PDCoV and did not cross-react with other viruses to cause swine diarrhea. The limit of detection of the virus titer using this method was 103 TCID50/mL of PDCoV particles. The results of a parallel analysis of 239 known pig samples revealed a coincidence rate of 97.07% (κ = 0.922) using DAS-ELISA and reverse transcriptase PCR (RT-PCR). The DAS-ELISA was used to measure the one-step growth curve of PDCoV in LLC-PK cells and the tissue distribution of PDCoV in infected piglets. The study found that the DAS-ELISA was comparable in accuracy to the TCID50 method while measuring the one-step growth curve. Furthermore, the tissue distribution measured by DAS-ELISA was also consistent with the qRT-PCR method. CONCLUSION The developed DAS-ELISA method can be conveniently used for the early clinical detection of PDCoV infection in pigs, and it may also serve as an alternative method for laboratory testing of PDCoV.
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Affiliation(s)
- Fangfang Han
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou , Henan, 450002, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou , Henan, 450002, China
| | - Fa Shan
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou , Henan, 450002, China
| | - Jinhui Hou
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou , Henan, 450002, China
- Key Laboratory for Animal-Derived Food Safety of Henan Province, Zhengzhou , Henan, 450002, China
| | - Donghui Guo
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou , Henan, 450002, China
| | - Yuqiang Xiang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou , Henan, 450002, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou , Henan, 450002, China
| | - Jin Yuan
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou , Henan, 450002, China.
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou , Henan, 450002, China.
| | - Zhanyong Wei
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou , Henan, 450002, China.
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou , Henan, 450002, China.
- Key Laboratory for Animal-Derived Food Safety of Henan Province, Zhengzhou , Henan, 450002, China.
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Li M, Zhang L, Zhou P, Zhang Z, Yu R, Zhang Y, Wang Y, Guo H, Pan L, Xiao S, Liu X. Porcine deltacoronavirus nucleocapsid protein interacts with the Grb2 through its proline-rich motifs to induce activation of the Raf-MEK-ERK signal pathway and promote virus replication. J Gen Virol 2024; 105. [PMID: 39136113 DOI: 10.1099/jgv.0.002014] [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] [Indexed: 09/21/2024] Open
Abstract
Porcine deltacoronavirus (PDCoV), an enteropathogenic coronavirus, causes severe watery diarrhoea, dehydration and high mortality in piglets, which has the potential for cross-species transmission in recent years. Growth factor receptor-bound protein 2 (Grb2) is a bridging protein that can couple cell surface receptors with intracellular signal transduction events. Here, we investigated the reciprocal regulation between Grb2 and PDCoV. It is found that Grb2 regulates PDCoV infection and promotes IFN-β production through activating Raf/MEK/ERK/STAT3 pathway signalling in PDCoV-infected swine testis cells to suppress viral replication. PDCoV N is capable of interacting with Grb2. The proline-rich motifs in the N- or C-terminal region of PDCoV N were critical for the interaction between PDCoV-N and Grb2. Except for Deltacoronavirus PDCoV N, the Alphacoronavirus PEDV N protein could interact with Grb2 and affect the regulation of PEDV replication, while the N protein of Betacoronavirus PHEV and Gammacoronavirus AIBV could not interact with Grb2. PDCoV N promotes Grb2 degradation by K48- and K63-linked ubiquitin-proteasome pathways. Overexpression of PDCoV N impaired the Grb2-mediated activated effect on the Raf/MEK/ERK/STAT3 signal pathway. Thus, our study reveals a novel mechanism of how host protein Grb2 protein regulates viral replication and how PDCoV N escaped natural immunity by interacting with Grb2.
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Affiliation(s)
- Mingxia Li
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Liping Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Peng Zhou
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Zhongwang Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Ruiming Yu
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Yongguang Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Yonglu Wang
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Huichen Guo
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Li Pan
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Sa Xiao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, PR China
| | - Xinsheng Liu
- State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
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Luo R, Cheng Z, Wang H, Yang Q, Zeng Y, Yang Y, Chen Y, Li W, Liu X. CRISPR/Cas13a-based rapid detection method for porcine deltacoronavirus. Front Microbiol 2024; 15:1429486. [PMID: 39119142 PMCID: PMC11306182 DOI: 10.3389/fmicb.2024.1429486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Accepted: 07/12/2024] [Indexed: 08/10/2024] Open
Abstract
Background Porcine deltacoronavirus (PDCoV) is a newly discovered porcine intestinal pathogenic coronavirus with a single-stranded positive-sense RNA genome and an envelope. PDCoV infects pigs of different ages and causes acute diarrhea and vomiting in newborn piglets. In severe cases, infection leads to dehydration, exhaustion, and death in sick piglets, entailing great economic losses on pig farms. The clinical symptoms of PDCoV infection are very similar to those of other porcine enteroviruses. Although it is difficult to distinguish these viral infections without testing, monitoring PDCoV is very important because it can spread in populations. The most commonly used methods for the detection of PDCoV is qPCR, which is time-consuming and require skilled personnel and equipment. Many farms cannot meet the conditions required for detection. Therefore, it is necessary to establish a faster and more convenient method for detecting PDCoV. Aims To establish a rapid and convenient detection method for PDCoV by combining RPA (Recombinase Polymerase Isothermal Amplification) with CRISPR/Cas13a. Methods Specific RPA primers and crRNA for PDCoV were designed, and the nucleic acids in the samples were amplified with RPA. Fluorescent CRISPR/Cas13a detection was performed. We evaluated the sensitivity and specificity of the RPA-CRISPR/Cas13a assay using qPCR as the control method. Results CRISPR/Cas13a-assisted detection was completed within 90 min. The minimum detection limit of PDCoV was 5.7 × 101 copies/μL. A specificity analysis showed that the assay did not cross-react with three other porcine enteroviruses. Conclusion The RPA-CRISPR/Cas13a method has the advantages of high sensitivity, strong specificity, fast response, and readily accessible results, and can be used for the detection of PDCoV.
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Affiliation(s)
- Ran Luo
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Zhimeng Cheng
- Division of Biliary Tract Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Research Center for Biliary Diseases, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Haoyu Wang
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Qiyue Yang
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yongping Zeng
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yijun Yang
- Department of Infectious and Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yuankun Chen
- Department of Infectious and Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Wenting Li
- Department of Infectious and Tropical Diseases, The Second Affiliated Hospital of Hainan Medical University, Haikou, China
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Xiao Liu
- College of Veterinary Medicine, Southwest University, Chongqing, China
- State Key Laboratory of Silkworm Genome Biology, Chongqing, China
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Hu Y, Hao C, Wang D, Guo M, Chu H, Jin X, Zu S, Ding X, Zhang H, Hu H. Porcine deltacoronavirus nucleocapsid protein antagonizes JAK-STAT signaling pathway by targeting STAT1 through KPNA2 degradation. J Virol 2024; 98:e0033424. [PMID: 38829137 PMCID: PMC11264599 DOI: 10.1128/jvi.00334-24] [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: 02/19/2024] [Accepted: 05/09/2024] [Indexed: 06/05/2024] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an enteric pathogenic coronavirus that causes acute and severe watery diarrhea in piglets and has the ability of cross-species transmission, posing a great threat to swine production and public health. The interferon (IFN)-mediated signal transduction represents an important component of virus-host interactions and plays an essential role in regulating viral infection. Previous studies have suggested that multifunctional viral proteins encoded by coronaviruses antagonize the production of IFN via various means. However, the function of these viral proteins in regulating IFN-mediated signaling pathways is largely unknown. In this study, we demonstrated that PDCoV and its encoded nucleocapsid (N) protein antagonize type I IFN-mediated JAK-STAT signaling pathway. We identified that PDCoV infection stimulated but delayed the production of IFN-stimulated genes (ISGs). In addition, PDCoV inhibited JAK-STAT signal transduction by targeting the nuclear translocation of STAT1 and ISGF3 formation. Further evidence showed that PDCoV N is the essential protein involved in the inhibition of type I IFN signaling by targeting STAT1 nuclear translocation via its C-terminal domain. Mechanistically, PDCoV N targets STAT1 by interacting with it and subsequently inhibiting its nuclear translocation. Furthermore, PDCoV N inhibits STAT1 nuclear translocation by specifically targeting KPNA2 degradation through the lysosomal pathway, thereby inhibiting the activation of downstream sensors in the JAK-STAT signaling pathway. Taken together, our results reveal a novel mechanism by which PDCoV N interferes with the host antiviral response.IMPORTANCEPorcine deltacoronavirus (PDCoV) is a novel enteropathogenic coronavirus that receives increased attention and seriously threatens the pig industry and public health. Understanding the underlying mechanism of PDCoV evading the host defense during infection is essential for developing targeted drugs and effective vaccines against PDCoV. This study demonstrated that PDCoV and its encoded nucleocapsid (N) protein antagonize type I interferon signaling by targeting STAT1, which is a crucial signal sensor in the JAK-STAT signaling pathway. Further experiments suggested that PDCoV N-mediated inhibition of the STAT1 nuclear translocation involves the degradation of KPNA2, and the lysosome plays a role in KPNA2 degradation. This study provides new insights into the regulation of PDCoV N in the JAK-STAT signaling pathway and reveals a novel mechanism by which PDCoV evades the host antiviral response. The novel findings may guide us to discover new therapeutic targets and develop live attenuated vaccines for PDCoV infection.
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Affiliation(s)
- Yating Hu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Chenlin Hao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Donghan Wang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Meng Guo
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Hongyan Chu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Xiaohui Jin
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Henan Province Key Laboratory of Animal Food Pathogens Surveillance, Zhengzhou, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou, China
| | - Shaopo Zu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Henan Province Key Laboratory of Animal Food Pathogens Surveillance, Zhengzhou, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou, China
| | - Xueyan Ding
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Henan Province Key Laboratory of Animal Food Pathogens Surveillance, Zhengzhou, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou, China
| | - Honglei Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Henan Province Key Laboratory of Animal Food Pathogens Surveillance, Zhengzhou, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou, China
| | - Hui Hu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Henan Province Key Laboratory of Animal Food Pathogens Surveillance, Zhengzhou, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou, China
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Serafini Poeta Silva AP, Arruda Cezar G, Sousa Magalhães E, Rupasinghe K, Chandra S, Silva GS, Almeida M, Crim B, Burrough E, Gauger P, Siepker C, Mainenti M, Zeller M, Main RG, Thurn M, Fioravante P, Corzo C, Rovira A, Naikare H, McGaughey R, Matias Ferreyra F, Retallick J, Gebhardt J, Pillatzki A, Greseth J, Kersey D, Clement T, Christopher-Hennings J, Prarat M, Johnson A, Summers D, Bowen C, Hendrix K, Boyle J, Lima Linhares DC, Trevisan G. Monitoring emerging pathogens using negative nucleic acid test results from endemic pathogens in pig populations: Application to porcine enteric coronaviruses. PLoS One 2024; 19:e0306532. [PMID: 38968319 PMCID: PMC11226029 DOI: 10.1371/journal.pone.0306532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 06/19/2024] [Indexed: 07/07/2024] Open
Abstract
This study evaluated the use of endemic enteric coronaviruses polymerase chain reaction (PCR)-negative testing results as an alternative approach to detect the emergence of animal health threats with similar clinical diseases presentation. This retrospective study, conducted in the United States, used PCR-negative testing results from porcine samples tested at six veterinary diagnostic laboratories. As a proof of concept, the database was first searched for transmissible gastroenteritis virus (TGEV) negative submissions between January 1st, 2010, through April 29th, 2013, when the first porcine epidemic diarrhea virus (PEDV) case was diagnosed. Secondly, TGEV- and PEDV-negative submissions were used to detect the porcine delta coronavirus (PDCoV) emergence in 2014. Lastly, encountered best detection algorithms were implemented to prospectively monitor the 2023 enteric coronavirus-negative submissions. Time series (weekly TGEV-negative counts) and Seasonal Autoregressive-Integrated Moving-Average (SARIMA) were used to control for outliers, trends, and seasonality. The SARIMA's fitted and residuals were then subjected to anomaly detection algorithms (EARS, EWMA, CUSUM, Farrington) to identify alarms, defined as weeks of higher TGEV-negativity than what was predicted by models preceding the PEDV emergence. The best-performing detection algorithms had the lowest false alarms (number of alarms detected during the baseline) and highest time to detect (number of weeks between the first alarm and PEDV emergence). The best-performing detection algorithms were CUSUM, EWMA, and Farrington flexible using SARIMA fitted values, having a lower false alarm rate and identified alarms 4 to 17 weeks before PEDV and PDCoV emergences. No alarms were identified in the 2023 enteric negative testing results. The negative-based monitoring system functioned in the case of PEDV propagating epidemic and in the presence of a concurrent propagating epidemic with the PDCoV emergence. It demonstrated its applicability as an additional tool for diagnostic data monitoring of emergent pathogens having similar clinical disease as the monitored endemic pathogens.
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Affiliation(s)
| | | | | | | | | | | | | | - Bret Crim
- Iowa State University, Ames, Iowa, United States of America
| | - Eric Burrough
- Iowa State University, Ames, Iowa, United States of America
| | - Phillip Gauger
- Iowa State University, Ames, Iowa, United States of America
| | | | - Marta Mainenti
- Iowa State University, Ames, Iowa, United States of America
| | - Michael Zeller
- Iowa State University, Ames, Iowa, United States of America
| | - Rodger G. Main
- Iowa State University, Ames, Iowa, United States of America
| | - Mary Thurn
- University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Paulo Fioravante
- University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Cesar Corzo
- University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Albert Rovira
- University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Hemant Naikare
- University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Rob McGaughey
- Kansas State University, Manhattan, Kansas, United States of America
| | | | - Jamie Retallick
- Kansas State University, Manhattan, Kansas, United States of America
| | - Jordan Gebhardt
- Kansas State University, Manhattan, Kansas, United States of America
| | - Angela Pillatzki
- South Dakota State University, Brookings, South Dakota, United States of America
| | - Jon Greseth
- South Dakota State University, Brookings, South Dakota, United States of America
| | - Darren Kersey
- South Dakota State University, Brookings, South Dakota, United States of America
| | - Travis Clement
- South Dakota State University, Brookings, South Dakota, United States of America
| | | | - Melanie Prarat
- Ohio Animal Disease and Diagnostic Laboratory, Reynoldsburg, Ohio, United States of America
| | - Ashley Johnson
- Ohio Animal Disease and Diagnostic Laboratory, Reynoldsburg, Ohio, United States of America
| | - Dennis Summers
- Ohio Animal Disease and Diagnostic Laboratory, Reynoldsburg, Ohio, United States of America
| | - Craig Bowen
- Purdue University, West Lafayette, Indiana, United States of America
| | - Kenitra Hendrix
- Purdue University, West Lafayette, Indiana, United States of America
| | - Joseph Boyle
- Purdue University, West Lafayette, Indiana, United States of America
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Chen Y, Song X, Chen W, Zhao X, Yang L, Liu D. Epitope screening and self-assembled nanovaccine molecule design of PDCoV-S protein based on immunoinformatics. Front Microbiol 2024; 15:1402963. [PMID: 38903798 PMCID: PMC11186991 DOI: 10.3389/fmicb.2024.1402963] [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: 03/18/2024] [Accepted: 05/21/2024] [Indexed: 06/22/2024] Open
Abstract
Based on the whole virus or spike protein of pigs, δ coronavirus (PDCoV) as an immunogen may have unrelated antigenic epitope interference. Therefore, it is essential for screening and identifying advantageous protective antigen epitopes. In addition, immunoinformatic tools are described as an important aid in determining protective antigenic epitopes. In this study, the primary, secondary, and tertiary structures of vaccines were measured using ExPASy, PSIPRED 4.0, and trRosetta servers. Meanwhile, the molecular docking analysis and vector of the candidate nanovaccine were constructed. The immune response of the candidate vaccine was simulated and predicted using the C-ImmSim server. This experiment screened B cell epitopes with strong immunogenicity and high conservation, CTL epitopes, and Th epitopes with IFN-γ and IL-4 positive spike proteins. Ferritin is used as a self-assembled nanoparticle element for designing candidate nanovaccine. After analysis, it has been found to be soluble, stable, non-allergenic, and has a high affinity for its target receptor, TLR-3. The preliminary simulation analysis results show that the candidate nanovaccine has the ability to induce a humoral and cellular immune response. Therefore, it may provide a new theoretical basis for research on coronavirus self-assembled nanovaccines. It may be an effective candidate vaccine for controlling and preventing PDCoV.
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Affiliation(s)
| | | | | | | | | | - Dongyu Liu
- College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
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9
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Zhu H, Wang G, Liu X, Wu W, Yu T, Zhang W, Liu X, Cheng G, Wei L, Ni L, Peng Z, Li X, Xu D, Qian P, Chen P. Establishment and application of a quadruplex real-time RT-qPCR assay for differentiation of TGEV, PEDV, PDCoV, and PoRVA. Microb Pathog 2024; 191:106646. [PMID: 38631414 DOI: 10.1016/j.micpath.2024.106646] [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: 12/18/2023] [Revised: 04/02/2024] [Accepted: 04/13/2024] [Indexed: 04/19/2024]
Abstract
Porcine viral diarrhea is a common ailment in clinical settings, causing significant economic losses to the swine industry. Notable culprits behind porcine viral diarrhea encompass transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), porcine deltacoronavirus (PDCoV), and porcine rotavirus-A (PoRVA). Co-infections involving the viruses are a common occurrence in clinical settings, thereby amplifying the complexities associated with differential diagnosis. As a consequence, it is therefore necessary to develop a method that can detect and differentiate all four porcine diarrhea viruses (TGEV, PEDV, PDCoV, and PoRVA) with a high sensitivity and specificity. Presently, polymerase chain reaction (PCR) is the go-to method for pathogen detection. In comparison to conventional PCR, TaqMan real-time PCR offers heightened sensitivity, superior specificity, and enhanced accuracy. This study aimed to develop a quadruplex real-time RT-qPCR assay, utilizing TaqMan probes, for the distinctive detection of TGEV, PEDV, PDCoV, and PoRVA. The quadruplex real-time RT-qPCR assay, as devised in this study, exhibited the capacity to avoid the detection of unrelated pathogens and demonstrated commendable specificity, sensitivity, repeatability, and reproducibility, boasting a limit of detection (LOD) of 27 copies/μL. In a comparative analysis involving 5483 clinical samples, the results from the commercial RT-qPCR kit and the quadruplex RT-qPCR for TGEV, PEDV, PDCoV, and PoRVA detection were entirely consistent. Following sample collection from October to March in Guangxi Zhuang Autonomous Region, we assessed the prevalence of TGEV, PEDV, PDCoV, and PoRVA in piglet diarrhea samples, revealing positive detection rates of 0.2 % (11/5483), 8.82 % (485/5483), 1.22 % (67/5483), and 4.94 % (271/5483), respectively. The co-infection rates of PEDV/PoRVA, PEDV/PDCoV, TGEV/PED/PoRVA, and PDCoV/PoRVA were 0.39 %, 0.11 %, 0.01 %, and 0.03 %, respectively, with no detection of other co-infections, as determined by the quadruplex real-time RT-qPCR. This research not only established a valuable tool for the simultaneous differentiation of TGEV, PEDV, PDCoV, and PoRVA in practical applications but also provided crucial insights into the prevalence of these viral pathogens causing diarrhea in Guangxi.
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Affiliation(s)
- Hechao Zhu
- Guangxi Yangxiang Co., LTD, Guigang, 537100, China; National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Geng Wang
- Guangxi Yangxiang Co., LTD, Guigang, 537100, China
| | - Xiangzu Liu
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Wenqing Wu
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Teng Yu
- Guangxi Yangxiang Co., LTD, Guigang, 537100, China
| | | | - Xiangdong Liu
- Guangxi Yangxiang Co., LTD, Guigang, 537100, China; College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Guofu Cheng
- College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Liuqing Wei
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Lumei Ni
- Guangxi Yangxiang Co., LTD, Guigang, 537100, China
| | - Zhong Peng
- College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Xiangmin Li
- College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Dequan Xu
- College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Ping Qian
- National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Pin Chen
- College of Animal Science & Technology, Collegel of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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10
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Wang G, Cao Y, Xu C, Zhang S, Huang Y, Zhang S, Bao W. Comprehensive transcriptomic and metabolomic analysis of porcine intestinal epithelial cells after PDCoV infection. Front Vet Sci 2024; 11:1359547. [PMID: 38855411 PMCID: PMC11160942 DOI: 10.3389/fvets.2024.1359547] [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: 12/21/2023] [Accepted: 05/07/2024] [Indexed: 06/11/2024] Open
Abstract
Introduction Porcine deltacoronavirus (PDCoV), an emerging swine enteropathogenic coronavirus with worldwide distribution, mainly infects newborn piglets with severe diarrhea, vomiting, dehydration, and even death, causing huge economic losses to the pig industry. However, the underlying pathogenic mechanisms of PDCoV infection and the effects of PDCoV infection on host transcripts and metabolites remain incompletely understood. Methods This study investigated a combined transcriptomic and metabolomic analysis of porcine intestinal epithelial cells (IPEC-J2) following PDCoV infection by LC/MS and RNA-seq techniques. A total of 1,401 differentially expressed genes and 254 differentially accumulated metabolites were detected in the comparison group of PDCoV-infected vs. mock-infected. Results and discussion We found that PDCoV infection regulates gene sets associated with multiple signaling pathways, including the neuroactive ligand-receptor interaction, cytokine-cytokine receptor interaction, MAPK signaling pathway, chemokine signaling pathway, ras signaling pathway and so on. Besides, the metabolomic results showed that biosynthesis of cofactors, nucleotide metabolism, protein digestion and absorption, and biosynthesis of amino acid were involved in PDCoV infection. Moreover, integrated transcriptomics and metabolomics analyses revealed the involvement of ferroptosis in PDCoV infection, and exogenous addition of the ferroptosis activator erastin significantly inhibited PDCoV replication. Overall, these unique transcriptional and metabolic reprogramming features may provide a better understanding of PDCoV-infected IPEC-J2 cells and potential targets for antiviral treatment.
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Affiliation(s)
- Guangzheng Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yanan Cao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Chao Xu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Shuoshuo Zhang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yanjie Huang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Shuai Zhang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Wenbin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China
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11
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Su G, Liu J, Duan C, Fang P, Fang L, Zhou Y, Xiao S. Enteric coronavirus PDCoV evokes a non-Warburg effect by hijacking pyruvic acid as a metabolic hub. Redox Biol 2024; 71:103112. [PMID: 38461791 PMCID: PMC10938170 DOI: 10.1016/j.redox.2024.103112] [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: 02/01/2024] [Revised: 02/21/2024] [Accepted: 03/03/2024] [Indexed: 03/12/2024] Open
Abstract
The Warburg effect, also referred as aerobic glycolysis, is a common metabolic program during viral infection. Through targeted metabolomics combined with biochemical experiments and various cell models, we investigated the central carbon metabolism (CCM) profiles of cells infected with porcine deltacoronavirus (PDCoV), an emerging enteropathogenic coronavirus with zoonotic potential. We found that PDCoV infection required glycolysis but decreased glycolytic flux, exhibiting a non-Warburg effect characterized by pyruvic acid accumulation. Mechanistically, PDCoV enhanced pyruvate kinase activity to promote pyruvic acid anabolism, a process that generates pyruvic acid with concomitant ATP production. PDCoV also hijacked pyruvic acid catabolism to increase biosynthesis of non-essential amino acids (NEAAs), suggesting that pyruvic acid is an essential hub for PDCoV to scavenge host energy and metabolites. Furthermore, PDCoV facilitated glutaminolysis to promote the synthesis of NEAA and pyrimidines for optimal proliferation. Our work supports a novel CCM model after viral infection and provides potential anti-PDCoV drug targets.
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Affiliation(s)
- Guanning Su
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Jiao Liu
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Chenrui Duan
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Puxian Fang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Liurong Fang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China
| | - Yanrong Zhou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China.
| | - Shaobo Xiao
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070, China.
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12
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Shi Y, Li B, Cheng J, Tao J, Tang P, Jiao J, Liu H. Microbial Community and Metabolome Analysis of the Porcine Intestinal Damage Model Induced by the IPEC-J2 Cell Culture-Adapted Porcine Deltacoronavirus (PDCoV) Infection. Microorganisms 2024; 12:874. [PMID: 38792704 PMCID: PMC11124095 DOI: 10.3390/microorganisms12050874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/20/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
This study was conducted to elucidate the intestinal damage induced by the IPEC-J2 cell culture-passaged PDCoV. The results showed that PDCoV disrupted the intestinal structure and increased intestinal permeability, causing abnormalities in mucosal pathology. Additionally, PDCoV induced an imbalance in the intestinal flora and disturbed its stability. Microbial community profiling revealed bacterial enrichment (e.g., Proteobacteria) and reduction (e.g., Firmicutes and Bacteroidetes) in the PDCoV-inoculated piglet model. In addition, metabolomics analysis indicated that 82 named differential metabolites were successfully quantified, including 37 up-regulated and 45 down-regulated metabolites. Chenodeoxycholic acid, sphingosine, and oleanolic aldehyde levels were reduced in PDCoV-inoculated piglets, while phenylacetylglycine and geranylgeranyl-PP levels were elevated. Correlation analysis indicated a negative correlation between Escherichia-Shigella and choline, succinic acid, creatine, phenyllactate, and hippuric acid. Meanwhile, Escherichia-Shigella was positively correlated with acetylcholine, L-Glutamicacid, and N-Acetylmuramate. Roseburia, Lachnospiraceae_UCG-010, Blautia, and Limosilactobacillus were negatively and positively correlated with sphingosine, respectively. These data suggested PDCoV-inoculated piglets exhibited significant taxonomic perturbations in the gut microbiome, which may result in a significantly altered metabolomic profile.
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Affiliation(s)
- Ying Shi
- Institute of Animal Husbandry and Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (Y.S.)
- Shanghai Key Laboratory of Agricultural Genetic Breeding, Shanghai 201106, China
- Shanghai Engineering Research Center of Pig Breeding, Shanghai 201302, China
| | - Benqiang Li
- Institute of Animal Husbandry and Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (Y.S.)
- Shanghai Key Laboratory of Agricultural Genetic Breeding, Shanghai 201106, China
- Shanghai Engineering Research Center of Pig Breeding, Shanghai 201302, China
| | - Jinghua Cheng
- Institute of Animal Husbandry and Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (Y.S.)
- Shanghai Key Laboratory of Agricultural Genetic Breeding, Shanghai 201106, China
- Shanghai Engineering Research Center of Pig Breeding, Shanghai 201302, China
| | - Jie Tao
- Institute of Animal Husbandry and Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (Y.S.)
- Shanghai Key Laboratory of Agricultural Genetic Breeding, Shanghai 201106, China
- Shanghai Engineering Research Center of Pig Breeding, Shanghai 201302, China
| | - Pan Tang
- Institute of Animal Husbandry and Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (Y.S.)
- Shanghai Key Laboratory of Agricultural Genetic Breeding, Shanghai 201106, China
- Shanghai Engineering Research Center of Pig Breeding, Shanghai 201302, China
| | - Jiajie Jiao
- Institute of Animal Husbandry and Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (Y.S.)
- Shanghai Key Laboratory of Agricultural Genetic Breeding, Shanghai 201106, China
- Shanghai Engineering Research Center of Pig Breeding, Shanghai 201302, China
| | - Huili Liu
- Institute of Animal Husbandry and Veterinary Sciences, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (Y.S.)
- Shanghai Key Laboratory of Agricultural Genetic Breeding, Shanghai 201106, China
- Shanghai Engineering Research Center of Pig Breeding, Shanghai 201302, China
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13
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Zhao Y, Zhang T, Zhou C, Guo B, Wang H. Pyrococcus furiosus Argonaute Based Detection Assays for Porcine Deltacoronavirus. ACS Synth Biol 2024; 13:1323-1331. [PMID: 38567812 DOI: 10.1021/acssynbio.4c00045] [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] [Indexed: 04/20/2024]
Abstract
Porcine deltacoronavirus (PDCoV) is a major cause of diarrhea and diarrhea-related deaths among piglets and results in massive losses to the overall porcine industry. The clinical manifestations of porcine diarrhea brought on by the porcine epidemic diarrhea virus (PEDV), porcine transmissible gastroenteritis virus (TGEV), and PDCoV are oddly similar to each other. Hence, the identification of different pathogens through molecular diagnosis and serological techniques is crucial. Three novel detection methods for identifying PDCoV have been developed utilizing recombinase-aided amplification (RAA) or reverse transcription recombinase-aided amplification (RT-RAA) in conjunction with Pyrococcus furiosus Argonaute (PfAgo): RAA-PfAgo, one-pot RT-RAA-PfAgo, and one-pot RT-RAA-PfAgo-LFD. The indicated approaches have a detection limit of around 60 copies/μL of PDCoV and do not cross-react with other viruses including PEDV, TGEV, RVA, PRV, PCV2, or PCV3. The applicability of one-pot RT-RAA-PfAgo and one-pot RT-RAA-PfAgo-LFD were examined using clinical samples and showed a positive rate comparable to the qPCR method. These techniques offer cutting-edge technical assistance for identifying, stopping, and managing PDCoV.
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Affiliation(s)
- Yu Zhao
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Tiejun Zhang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Changyu Zhou
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Boyan Guo
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
| | - Hongning Wang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China
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14
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Zhang Y, Si L, Gao J, Shu X, Qiu C, Zhang Y, Zu S, Hu H. Serial passage of PDCoV in cell culture reduces its pathogenicity and its damage of gut microbiota homeostasis in piglets. mSystems 2024; 9:e0134623. [PMID: 38349151 PMCID: PMC10949489 DOI: 10.1128/msystems.01346-23] [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: 12/14/2023] [Accepted: 01/10/2024] [Indexed: 03/20/2024] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an enteropathogenic coronavirus that mainly causes diarrhea in suckling piglets, and also has the potential for cross-species transmission. However, there are still no commercial vaccines available to prevent and control PDCoV infection. In this study, PDCoV strain HNZK-02 was serially propagated in vitro for up to 150 passages and the amino acid changes have mainly occurred in the S protein during serial passage which caused structure change. PDCoV HNZK-02-passage 5 (P5)-infected piglets exhibited acute and severe watery diarrhea, an obvious intestinal damage, while the piglets infected with PDCoV HNZK-02-P150 showed no obvious clinical signs, weak intestinal lesions, and lower viral loads in rectal swabs and various tissues. Compared with the PDCoV HNZK-02-P5 infection, HNZK-02-P150 infection resulted in a decrease in intestinal mucosal permeability and pro-inflammatory cytokines. Moreover, PDCoV HNZK-02-P5 infection had significantly reduced bacterial diversity and increased relative abundance of opportunistic pathogens, while PDCoV HNZK-02-P150 infection did not significantly affect the bacterial diversity, and the relative abundance of probiotics increased. Furthermore, the alterations of gut microbiota were closely related to the change of pro-inflammatory factor. Metagenomics prediction analysis demonstrated that HNZK-02-P150 modulated the tyrosine metabolism, Nucleotide-binding and oligomerization domain (NOD)-like receptor signaling pathway, and lipopolysaccharide biosynthesis, which coincided with lower inflammatory response and intestinal permeability in the piglets infected with HNZK-02-P150. In conclusion, the PDCoV HNZK-02 was successfully attenuated by serial passage in vitro, and the changes of S gene, metabolic function, and gut microbiota may contribute to the attenuation. The PDCoV HNZK-02-P150 may have the potential for developing live-attenuated vaccine.IMPORTANCEPorcine deltacoronavirus (PDCoV) is an enteropathogen causing severe diarrhea, dehydration, and death in nursing piglets, devastating great economic losses for the global swine industry, and has cross-species transmission and zoonotic potential. There are currently no approved treatments or vaccines available for PDCoV. In addition, gut microbiota has an important relationship with the development of many diseases. Here, the PDCoV virulent HNZK-02 strain was successfully attenuated by serial passage on cell cultures, and the pathogenesis and effects on the gut microbiota composition and metabolic function of the PDCoV HNZK-02-P5 and P150 strains were investigated in piglets. We also found the genetic changes in the S protein during passage in vitro and the gut microbiota may contribute to the pathogenesis of PDCoV, while their interaction molecular mechanism would need to be explored further.
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Affiliation(s)
- Yunfei Zhang
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Lulu Si
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Junlong Gao
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Xiangli Shu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Congrui Qiu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yue Zhang
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Key Laboratory for Animal-derived Food Safety of Henan Province, Zhengzhou, Henan, China
| | - Shaopo Zu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Key Laboratory for Animal-derived Food Safety of Henan Province, Zhengzhou, Henan, China
| | - Hui Hu
- The College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China
- Key Laboratory for Animal-derived Food Safety of Henan Province, Zhengzhou, Henan, China
- Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou, Henan, China
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15
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Kikuti M, Picasso-Risso C, Corzo CA. Porcine Deltacoronavirus Occurrence in the United States Breeding Herds since Its Emergence in 2014. Viruses 2024; 16:445. [PMID: 38543810 PMCID: PMC10975363 DOI: 10.3390/v16030445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/22/2024] [Accepted: 03/11/2024] [Indexed: 05/23/2024] Open
Abstract
PDCoV, an enveloped RNA virus, causes atrophic enteritis in neonatal piglets, leading to diarrhea, malabsorption, dehydration, and death. The study aims to fill the gap in the current epidemiological information about PDCoV in the U.S. pig population after its emergence in 2014. Data from the Morrison Swine Health Monitoring Project (MSHMP) between January 2015 and December 2023 were analyzed, representing approximately 60% of the U.S. breeding herd. Participating herds report weekly PDCoV health status. In total, 244 PDCoV outbreaks occurred in 186 sites from 22 production systems across 16 states. Case counts peaked during winter, and incidence ranged from 0.44% in 2017 to 4.28% in 2023. For sites that experienced more than one PDCoV outbreak during the study period, the interval between outbreaks was a median of 2.11 years. The South and Midwest regions reported the majority of cases. In 2017, a shift in the spatial distribution of cases from the Midwest to the South was observed. The findings underscore the importance of continued monitoring and strengthened control measures to mitigate the impact of PDCoV in U.S. breeding herds.
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Affiliation(s)
- Mariana Kikuti
- Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN 55108, USA; (M.K.)
| | - Catalina Picasso-Risso
- Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN 55108, USA; (M.K.)
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - Cesar A. Corzo
- Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN 55108, USA; (M.K.)
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16
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Tarasiuk G, Remmenga MD, O'Hara KC, Talbert MK, Rotolo ML, Zaabel P, Zhang D, Giménez-Lirola LG, Zimmerman JJ. Pen-Based Swine Oral Fluid Samples Contain Both Environmental and Pig-Derived Targets. Animals (Basel) 2024; 14:766. [PMID: 38473151 DOI: 10.3390/ani14050766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/17/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
Laboratory methods for detecting specific pathogens in oral fluids are widely reported, but there is little research on the oral fluid sampling process itself. In this study, a fluorescent tracer (diluted red food coloring) was used to test the transfer of a target directly from pigs or indirectly from the environment to pen-based oral fluid samples. Pens of ~30, ~60, and ~125 14-week-old pigs (32 pens/size) on commercial swine farms received one of two treatments: (1) pig exposure, i.e., ~3.5 mL of tracer solution sprayed into the mouth of 10% of the pigs in the pen; (2) environmental exposure, i.e., 20 mL of tracer solution was poured on the floor in the center of the pen. Oral fluids collected one day prior to treatment (baseline fluorescence control) and immediately after treatment were tested for fluorescence. Data were evaluated by receiver operating characteristic (ROC) analysis, with Youden's J statistic used to set a threshold. Pretreatment oral fluid samples with fluorescence responses above the ROC threshold were removed from further analysis (7 of 96 samples). Based on the ROC analyses, oral fluid samples from 78 of 89 pens (87.6%), contained red food coloring, including 43 of 47 (91.5%) pens receiving pig exposure and 35 of 42 (83.3%) pens receiving environmental exposure. Thus, oral fluid samples contain both pig-derived and environmental targets. This methodology provides a safe and quantifiable method to evaluate oral fluid sampling vis-à-vis pen behavior, pen size, sampling protocol, and target distribution in the pen.
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Affiliation(s)
- Grzegorz Tarasiuk
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Marta D Remmenga
- USDA: VS: Strategy and Policy, Center for Epidemiology and Animal Health, Fort Collins, CO 80526, USA
| | - Kathleen C O'Hara
- USDA: VS: Strategy and Policy, Center for Epidemiology and Animal Health, Fort Collins, CO 80526, USA
| | - Marian K Talbert
- USDA: VS: Strategy and Policy, Center for Epidemiology and Animal Health, Fort Collins, CO 80526, USA
| | | | - Pam Zaabel
- National Pork Board, Des Moines, IA 50325, USA
| | - Danyang Zhang
- Department of Statistics, College of Liberal Arts and Sciences, Iowa State University, Ames, IA 50010, USA
| | - Luis G Giménez-Lirola
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Jeffrey J Zimmerman
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
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17
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Li Z, Xiao W, Yang Z, Guo J, Zhou J, Xiao S, Fang P, Fang L. Cleavage of HDAC6 to dampen its antiviral activity by nsp5 is a common strategy of swine enteric coronaviruses. J Virol 2024; 98:e0181423. [PMID: 38289103 PMCID: PMC10878235 DOI: 10.1128/jvi.01814-23] [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: 11/18/2023] [Accepted: 12/21/2023] [Indexed: 02/21/2024] Open
Abstract
HDAC6, a structurally and functionally unique member of the histone deacetylase (HDAC) family, is an important host factor that restricts viral infection. The broad-spectrum antiviral activity of HDAC6 makes it a potent antiviral agent. Previously, we found that HDAC6 functions to antagonize porcine deltacoronavirus (PDCoV), an emerging enteropathogenic coronavirus with zoonotic potential. However, the final outcome is typically a productive infection that materializes as cells succumb to viral infection, indicating that the virus has evolved sophisticated mechanisms to combat the antiviral effect of HDAC6. Here, we demonstrate that PDCoV nonstructural protein 5 (nsp5) can cleave HDAC6 at glutamine 519 (Q519), and cleavage of HDAC6 was also detected in the context of PDCoV infection. More importantly, the anti-PDCoV activity of HDAC6 was damaged by nsp5 cleavage. Mechanistically, the cleaved HDAC6 fragments (amino acids 1-519 and 520-1159) lost the ability to degrade PDCoV nsp8 due to their impaired deacetylase activity. Furthermore, nsp5-mediated cleavage impaired the ability of HDAC6 to activate RIG-I-mediated interferon responses. We also tested three other swine enteric coronaviruses (transmissible gastroenteritis virus, porcine epidemic diarrhea virus, and swine acute diarrhea syndrome-coronavirus) and found that all these coronaviruses have adopted similar mechanisms to cleave HDAC6 in both an overexpression system and virus-infected cells, suggesting that cleavage of HDAC6 is a common strategy utilized by swine enteric coronaviruses to antagonize the host's antiviral capacity. Together, these data illustrate how swine enteric coronaviruses antagonize the antiviral function of HDAC6 to maintain their infection, providing new insights to the interaction between virus and host.IMPORTANCEViral infections and host defenses are in constant opposition. Once viruses combat or evade host restriction, productive infection is achieved. HDAC6 is a broad-spectrum antiviral protein that has been demonstrated to inhibit many viruses, including porcine deltacoronavirus (PDCoV). However, whether HDAC6 is reciprocally targeted and disabled by viruses remains unclear. In this study, we used PDCoV as a model and found that HDAC6 is targeted and cleaved by nsp5, a viral 3C-like protease. The cleaved HDAC6 loses its deacetylase activity as well as its ability to degrade viral proteins and activate interferon responses. Furthermore, this cleavage mechanism is shared among other swine enteric coronaviruses. These findings shed light on the intricate interplay between viruses and HDAC6, highlighting the strategies employed by viruses to evade host antiviral defenses.
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Affiliation(s)
- Zhuang Li
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Wenwen Xiao
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Zhixiang Yang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Jiahui Guo
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Junwei Zhou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Shaobo Xiao
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Puxian Fang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Liurong Fang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- The Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
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18
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Li B, Gao Y, Ma Y, Shi K, Shi Y, Feng S, Yin Y, Long F, Sun W. Genetic and Evolutionary Analysis of Porcine Deltacoronavirus in Guangxi Province, Southern China, from 2020 to 2023. Microorganisms 2024; 12:416. [PMID: 38399820 PMCID: PMC10893222 DOI: 10.3390/microorganisms12020416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/11/2024] [Accepted: 02/17/2024] [Indexed: 02/25/2024] Open
Abstract
Porcine deltacoronavirus (PDCoV) has shown large-scale global spread since its discovery in Hong Kong in 2012. In this study, a total of 4897 diarrheal fecal samples were collected from the Guangxi province of China from 2020 to 2023 and tested using RT-qPCR. In total, 362 (362/4897, 7.39%) of samples were positive for PDCoV. The S, M, and N gene sequences were obtained from 34 positive samples after amplification and sequencing. These PDCoV gene sequences, together with other PDCoV S gene reference sequences from China and other countries, were analyzed. Phylogenetic analysis revealed that the Chinese PDCoV strains have diverged in recent years. Bayesian analysis revealed that the new China 1.3 lineage began to diverge in 2012. Comparing the amino acids of the China 1.3 lineage with those of other lineages, the China 1.3 lineage showed variations of mutations, deletions, and insertions, and some variations demonstrated the same as or similar to those of the China 1.2 lineage. In addition, recombination analysis revealed interlineage recombination in CHGX-MT505459-2019 and CHGX-MT505449-2017 strains from Guangxi province. In summary, the results provide new information on the prevalence and evolution of PDCoV in Guangxi province in southern China, which will facilitate better comprehension and prevention of PDCoV.
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Affiliation(s)
- Biao Li
- College of Animal Science and Technology, Guangxi University, Nanning 530005, China; (B.L.); (Y.M.); (Y.S.)
| | - Yeheng Gao
- Institute of Agricultural and Animal Husbandry Industry Development, Guangxi University, Nanning 530005, China;
| | - Yan Ma
- College of Animal Science and Technology, Guangxi University, Nanning 530005, China; (B.L.); (Y.M.); (Y.S.)
| | - Kaichuang Shi
- College of Animal Science and Technology, Guangxi University, Nanning 530005, China; (B.L.); (Y.M.); (Y.S.)
- Guangxi Center for Animal Disease Control and Prevention, Nanning 530001, China; (S.F.); (Y.Y.); (F.L.)
| | - Yuwen Shi
- College of Animal Science and Technology, Guangxi University, Nanning 530005, China; (B.L.); (Y.M.); (Y.S.)
| | - Shuping Feng
- Guangxi Center for Animal Disease Control and Prevention, Nanning 530001, China; (S.F.); (Y.Y.); (F.L.)
| | - Yanwen Yin
- Guangxi Center for Animal Disease Control and Prevention, Nanning 530001, China; (S.F.); (Y.Y.); (F.L.)
| | - Feng Long
- Guangxi Center for Animal Disease Control and Prevention, Nanning 530001, China; (S.F.); (Y.Y.); (F.L.)
| | - Wenchao Sun
- Institute of Virology, Wenzhou University, Wenzhou 325035, China
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19
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Chen L, Huang Y, Xu T, Lai SY, Ai YR, Zhou Y, Zhu L, Xu ZW. Prokaryotic expression of porcine deltacoronavirus S gene truncated segment and establishment of indirect ELISA detection method. J Virol Methods 2023; 320:114775. [PMID: 37482197 DOI: 10.1016/j.jviromet.2023.114775] [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: 06/01/2023] [Revised: 07/14/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
Porcine deltacoronavirus (PDCoV) is an emerging discovered coronavirus that causes significant losses in the global swine industry. This study aimed to establish an indirect ELISA method for detecting PDCoV antibodies using the truncated gene of PDCoV spike protein (S). The purified S protein was used as the coating antigen for the polyclonal antibody. The conditions were optimized to establish an indirect ELISA detection method for PDCoV based on the S protein, which showed good specificity and no cross-reaction with SVV-VP1, ASFV-P72, GETV-E2, PRV-gE, etc. The method has high repeatability, with coefficients of variation within and between batches less than 10%. Compared with the commercial kit, the positive coincidence rate is 86.40%, the negative coincidence rate is 89.43%, and the total coincidence rate is 91.76%. This ELISA can be used for PDCoV serological investigation and antibody evaluation. It can also lay the foundation for further research and development of PDCoV S protein ELISA antibody detection kit.
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Affiliation(s)
- Lan Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yao Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Tong Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Si-Yuan Lai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yan-Ru Ai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yuancheng Zhou
- Key Laboratory of Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, China; Livestock and Poultry Biological Products Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, China
| | - Ling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; College of Veterinary Medicine Sichuan Key Laboratory of Animal Epidemic Disease and Human Health, Sichuan Agricultural University, Chengdu, China.
| | - Zhi-Wen Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China; College of Veterinary Medicine Sichuan Key Laboratory of Animal Epidemic Disease and Human Health, Sichuan Agricultural University, Chengdu, China.
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20
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Huang B, Huang Y, Deng L, Xu T, Jian Z, Lai S, Ai Y, Zhu L, Xu Z. Intranasal administration with recombinant vaccine PRVXJ-delgE/gI/TK-S induces strong intestinal mucosal immune responses against PDCoV. BMC Vet Res 2023; 19:171. [PMID: 37741960 PMCID: PMC10517555 DOI: 10.1186/s12917-023-03739-5] [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: 04/20/2023] [Accepted: 09/15/2023] [Indexed: 09/25/2023] Open
Abstract
Porcine deltacoronavirus (PDCoV) is a novel coronavirus that causes enteric diseases in pigs leading to substantial financial losses within the industry. The absence of commercial vaccines and limited research on PDCoV vaccines presents significant challenges. Therefore, we evaluated the safety and immunogenicity of recombinant pseudorabies virus (PRV) rPRVXJ-delgE/gI/TK-S through intranasal mucosal immunization in weaned piglets and SPF mice. Results indicated that rPRVXJ-delgE/gI/TK-S safely induced PDCoV S-specific and PRV gB-specific antibodies in piglets, with levels increasing 7 days after immunization. Virus challenge tests demonstrated that rPRVXJ-delgE/gI/TK-S effectively improved piglet survival rates, reduced virus shedding, and alleviated clinical symptoms and pathological damage. Notably, the recombinant virus reduced anti-inflammatory and pro-inflammatory responses by regulating IFN-γ, TNF-α, and IL-1β secretion after infection. Additionally, rPRVXJ-delgE/gI/TK-S colonized target intestinal segments infected with PDCoV, stimulated the secretion of cytokines by MLVS in mice, stimulated sIgA secretion in different intestinal segments of mice, and improved mucosal immune function. HE and AB/PAS staining confirmed a more complete intestinal mucosal barrier and a significant increase in goblet cell numbers after immunization. In conclusion, rPRVXJ-delgE/gI/TK-S exhibits good immunogenicity and safety in mice and piglets, making it a promising candidate vaccine for PDCoV.
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Affiliation(s)
- Bingzhou Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yao Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lishuang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Tong Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhijie Jian
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
| | - Siyuan Lai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, China
| | - Yanru Ai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, China
| | - Ling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China.
- Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, China.
| | - Zhiwen Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, China
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21
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Rawal G, Zhang J, Halbur PG, Gauger PC, Wang C, Opriessnig T. Experimental Infection of Pigs with a Traditional or a Variant Porcine Respiratory Coronavirus (PRCV) Strain and Impact on Subsequent Influenza A Infection. Pathogens 2023; 12:1031. [PMID: 37623991 PMCID: PMC10459072 DOI: 10.3390/pathogens12081031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/28/2023] [Accepted: 08/05/2023] [Indexed: 08/26/2023] Open
Abstract
Porcine respiratory coronavirus (PRCV) pathogenicity in pigs has been characterized using traditional PRCV isolates; however, information is lacking on pathogenicity of currently circulating PRCV isolates. Recently, a contemporary US PRCV variant was isolated. The infection dynamics of that strain (PRCV-var) and a traditional PRCV strain (PRCV-trad) were compared. In brief, 4-week-old pigs were divided into three groups with five pigs each. The pigs were inoculated with PRCV-trad or PRCV-var, or left uninfected. Nasal swabs were collected daily, and all pigs were necropsied at day (D) 3. PRCV nasal shedding was significantly higher in PRCV-var pigs compared to PRCV-trad pigs. To investigate the impact of trad and var PRCVs on subsequent infection with influenza A virus (IAV), four additional groups of five pigs were used: PRCV-trad-IAV (PRCV-trad at D0, co-infected with IAV at D5), PRCV-var-IAV, and IAV positive and negative controls. Significantly higher mean PRCV antibody titers and a significantly higher area under the curve (AUC) for PRCV shedding were observed in PRCV-var compared to PRCV-trad-pigs at D10. There was no impact on IAV infection. In conclusion, a 2020 PRCV variant isolate was similar in pathogenicity but more transmissible compared to a traditional 1989 isolate. These findings raise concerns about virus evolution towards more highly pathogenic and transmissible strains and the need to monitor such viruses.
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Affiliation(s)
- Gaurav Rawal
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50011, USA; (G.R.); (P.G.H.); (P.C.G.); (C.W.)
| | - Jianqiang Zhang
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50011, USA; (G.R.); (P.G.H.); (P.C.G.); (C.W.)
| | - Patrick G. Halbur
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50011, USA; (G.R.); (P.G.H.); (P.C.G.); (C.W.)
| | - Phillip C. Gauger
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50011, USA; (G.R.); (P.G.H.); (P.C.G.); (C.W.)
| | - Chong Wang
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50011, USA; (G.R.); (P.G.H.); (P.C.G.); (C.W.)
| | - Tanja Opriessnig
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA 50011, USA; (G.R.); (P.G.H.); (P.C.G.); (C.W.)
- Vaccines and Diagnostics Department, Moredun Research Institute, Penicuik, Midlothian EH26 0PZ, UK
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22
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Chen J, Liu R, Liu H, Chen J, Li X, Zhang J, Zhou B. Development of a Multiplex Quantitative PCR for Detecting Porcine Epidemic Diarrhea Virus, Transmissible Gastroenteritis Virus, and Porcine Deltacoronavirus Simultaneously in China. Vet Sci 2023; 10:402. [PMID: 37368788 DOI: 10.3390/vetsci10060402] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/11/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV), transmissible gastroenteritis virus (TGEV), and porcine deltacoronavirus (PDCoV) belong to the category of swine enteric coronavirus that cause acute diarrhea in piglets, which has resulted in massive losses to the pig husbandry. Therefore, a sensitive and rapid detection method which can differentially detect these viruses that lead to mixed infections in clinical cases, is urgently needed. According to the conserved regions of the PEDV M gene, TGEV S gene, and PDCoV N gene, and the reference gene of porcine (β-Actin), we designed new specific primers and probes for the multiplex qPCR assay capable of simultaneously detecting three RNA viruses. This method, with a great specificity, did not cross-react with the common porcine virus. Moreover, the limit of detection of the method we developed could reach 10 copies/μL ,and the intra- and inter-group coefficients of variation of it below 3%. Applying this assay to detect 462 clinical samples which were collected in 2022-2023, indicated that the discrete positive rates of PEDV, TGEV, and PDCoV were 19.70%, 0.87%, and 10.17%, respectively. The mixed infection rates of PEDV/TGEV, PEDV/PDCoV, TGEV/PDCoV, and PEDV/TGEV/PDCoV were 3.25%, 23.16%, 0.22%, and 11.90%, respectively. All in all, the multiplex qPCR assay we developed as a tool for differential and rapid diagnosing can be put on the active prevention and control of PEDV, TGEV, and PDCoV, , which can create great value in the diagnosis of swine diarrhea diseases.
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Affiliation(s)
- Jianpeng Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Rongchao Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Huaicheng Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jing Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaohan Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jianfeng Zhang
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory of Livestock Disease Prevention of Guangdong Province, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, China
| | - Bin Zhou
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
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23
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Hou W, Fan M, Zhu Z, Li X. Establishment and Application of a Triplex Real-Time RT-PCR Assay for Differentiation of PEDV, PoRV, and PDCoV. Viruses 2023; 15:1238. [PMID: 37376539 DOI: 10.3390/v15061238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023] Open
Abstract
Porcine viral diarrhea is very common in clinical practice and has caused huge losses to the pig industry. Porcine epidemic diarrhea virus (PEDV), porcine rotavirus (PoRV), and porcine deltacoronavirus (PDCoV) are important pathogens of porcine viral diarrhea. Co-infection situations among these three viruses in clinics are common, which increases the difficulty of differential diagnosis. Currently, polymerase chain reaction (PCR) is commonly used to detect pathogens. TaqMan real-time PCR is more sensitive than conventional PCR and has better specificity and accuracy. In this study, a triplex real-time RT-PCR assay based on TaqMan probes was developed for differential detection of PEDV, PoRV, and PDCoV. The triplex real-time RT-PCR assay developed in this study could not detect unrelated pathogens and showed satisfactory specificity, sensitivity, repeatability, and reproducibility with a limit of detection (LOD) of 6.0 × 101 copies/μL. Sixteen clinical samples were used to compare the results of the commercial RT-PCR kit and the triplex RT-PCR for PEDV, PoRV, and PDCoV detection, and the results were completely consistent. A total of 112 piglet diarrhea samples collected from Jiangsu province were next used to study the local prevalence of PEDV, PoRV, and PDCoV. The positive rates of PEDV, PoRV, and PDCoV detected by the triplex real-time RT-PCR were 51.79% (58/112), 59.82% (67/112), and 2.68% (3/112), respectively. The co-infections of PEDV and PoRV were frequent (26/112, 23.21%), followed by the co-infections of PDCoV and PoRV (2/112, 1.79%). This study established a useful tool for simultaneous differentiation of PEDV, PoRV, and PDCoV in practice and provided valuable information on the prevalence of these diarrhea viral pathogens in Jiangsu province.
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Affiliation(s)
- Wenwen Hou
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Maodi Fan
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Zhenbang Zhu
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Xiangdong Li
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin, College of Life Sciences, Tarim University, Alar 843399, China
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24
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Liu Y, Han X, Qiao Y, Wang T, Yao L. Porcine Deltacoronavirus-like Particles Produced by a Single Recombinant Baculovirus Elicit Virus-Specific Immune Responses in Mice. Viruses 2023; 15:v15051095. [PMID: 37243181 DOI: 10.3390/v15051095] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
Porcine deltacoronavirus (PDCoV) causes diarrhea and vomiting in neonatal piglets worldwide and has the potential for cross-species transmission. Therefore, virus-like particles (VLPs) are promising vaccine candidates because of their safety and strong immunogenicity. To the best of our knowledge, the present study reported for the first time the generation of PDCoV VLPs using a baculovirus expression vector system, and electron micrograph analyses revealed that PDCoV VLPs appeared as spherical particles with a diameter similar to that of the native virions. Furthermore, PDCoV VLPs effectively induced mice to produce PDCoV-specific IgG and neutralizing antibodies. In addition, VLPs could stimulate mouse splenocytes to produce high levels of cytokines IL-4 and IFN-γ. Moreover, the combination of PDCoV VLPs and Freund's adjuvant could improve the level of the immune response. Together, these data showed that PDCoV VLPs could effectively elicit humoral and cellular immunity in mice, laying a solid foundation for developing VLP-based vaccines to prevent PDCoV infections.
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Affiliation(s)
- Yangkun Liu
- Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, China
| | - Xueying Han
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Yaqi Qiao
- College of Veterinary Medicine and Engineering, Nanyang Vocational College of Agriculture, Nanyang 473061, China
| | - Tiejun Wang
- College of Veterinary Medicine and Engineering, Nanyang Vocational College of Agriculture, Nanyang 473061, China
| | - Lunguang Yao
- Henan Provincial Engineering and Technology Center of Health Products for Livestock and Poultry, School of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, China
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25
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Castañeda-Montes FJ, Cerriteño-Sánchez JL, Castañeda-Montes MA, Cuevas-Romero JS, Mendoza-Elvira S. A Candidate Antigen of the Recombinant Membrane Protein Derived from the Porcine Deltacoronavirus Synthetic Gene to Detect Seropositive Pigs. Viruses 2023; 15:v15051049. [PMID: 37243136 DOI: 10.3390/v15051049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/20/2023] [Accepted: 04/22/2023] [Indexed: 05/28/2023] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an emergent swine coronavirus which infects cells from the small intestine and induces watery diarrhea, vomiting and dehydration, causing mortality in piglets (>40%). The aim of this study was to evaluate the antigenicity and immunogenicity of the recombinant membrane protein (M) of PDCoV (rM-PDCoV), which was developed from a synthetic gene obtained after an in silico analysis with a group of 138 GenBank sequences. A 3D model and phylogenetic analysis confirmed the highly conserved M protein structure. Therefore, the synthetic gene was successfully cloned in a pETSUMO vector and transformed in E. coli BL21 (DE3). The rM-PDCoV was confirmed by SDS-PAGE and Western blot with ~37.7 kDa. The rM-PDCoV immunogenicity was evaluated in immunized (BLAB/c) mice and iELISA. The data showed increased antibodies from 7 days until 28 days (p < 0.001). The rM-PDCoV antigenicity was analyzed using pig sera samples from three states located in "El Bajío" Mexico and positive sera were determined. Our results show that PDCoV has continued circulating on pig farms in Mexico since the first report in 2019; therefore, the impact of PDCoV on the swine industry could be higher than reported in other studies.
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Affiliation(s)
- Francisco Jesus Castañeda-Montes
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Km 15.5 Carretera México-Toluca, Palo Alto, Cuajimalpa, Ciudad de México 05110, Mexico
- Posgrado en Ciencias de la Producción y de la Salud Animal, Facultad de Estudios Superiores Cuautitlán, Estado de México, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
| | - José Luis Cerriteño-Sánchez
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Km 15.5 Carretera México-Toluca, Palo Alto, Cuajimalpa, Ciudad de México 05110, Mexico
| | - María Azucena Castañeda-Montes
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Km 15.5 Carretera México-Toluca, Palo Alto, Cuajimalpa, Ciudad de México 05110, Mexico
| | - Julieta Sandra Cuevas-Romero
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Km 15.5 Carretera México-Toluca, Palo Alto, Cuajimalpa, Ciudad de México 05110, Mexico
| | - Susana Mendoza-Elvira
- Posgrado en Ciencias de la Producción y de la Salud Animal, Facultad de Estudios Superiores Cuautitlán, Estado de México, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
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Wang Z, Qu K, Li J, Wang Y, Wang L, Yu Y. Prevalence and potential risk factors of PDCoV in pigs based on publications during 2015-2021 in China: Comprehensive literature review and meta-analysis. Microb Pathog 2023; 179:106118. [PMID: 37062492 DOI: 10.1016/j.micpath.2023.106118] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/13/2023] [Accepted: 04/14/2023] [Indexed: 04/18/2023]
Abstract
Porcine deltacoronavirus (PDCoV), a novel coronavirus which infects pigs, spreading around the world and causing huge economic losses. In recent years, there have also been human cases of PDCoV infection, which poses a potential threat to public health. Therefore, we conducted a systematic review and meta-analysis to assess the prevalence of PDCoV in pigs in China between 2015 and 2021. The prevalence of PDCoV in China was searched from five databases (CNKI, VIP, WanFang, PubMed and ScienceDirect) and 65 articles met the inclusion criteria, with a total of 25,977 samples, including 3828 positive cases. The overall prevalence of PDCoV was 13.61% (3828/25,977), with the highest prevalence in northern China (19.18%) and the lowest prevalence in southwest China (7.19%). We also analyzed other subgroup information, such as sampling years, test methods, age and geographic factors. The results show that PDCoV is endemic in China and climate may be a potential risk factor for PDCoV infection. It is suggested that appropriate measures should be taken in different climatic areas to reduce local PDCoV infection.
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Affiliation(s)
- Zhe Wang
- Department of Immunology, College of Basic Medical Sciences, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin Province, 130021, PR China; Department of Molecular Biology, College of Basic Medical Sciences and Institute of Pediatrics, First Hospital of Jilin University, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin Province, 130021, PR China
| | - Kuo Qu
- Department of Molecular Biology, College of Basic Medical Sciences and Institute of Pediatrics, First Hospital of Jilin University, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin Province, 130021, PR China
| | - Jianhua Li
- Department of Molecular Biology, College of Basic Medical Sciences and Institute of Pediatrics, First Hospital of Jilin University, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin Province, 130021, PR China
| | - Yangyang Wang
- Department of Molecular Biology, College of Basic Medical Sciences and Institute of Pediatrics, First Hospital of Jilin University, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin Province, 130021, PR China
| | - Liying Wang
- Department of Molecular Biology, College of Basic Medical Sciences and Institute of Pediatrics, First Hospital of Jilin University, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin Province, 130021, PR China.
| | - Yongli Yu
- Department of Immunology, College of Basic Medical Sciences, Norman Bethune Health Science Center, Jilin University, Changchun, Jilin Province, 130021, PR China.
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Saleem W, Ren X, Van Den Broeck W, Nauwynck H. Changes in intestinal morphology, number of mucus-producing cells and expression of coronavirus receptors APN, DPP4, ACE2 and TMPRSS2 in pigs with aging. Vet Res 2023; 54:34. [PMID: 37055856 PMCID: PMC10100624 DOI: 10.1186/s13567-023-01169-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 04/01/2023] [Indexed: 04/15/2023] Open
Abstract
Porcine enteric viral infections cause high morbidity and mortality in young piglets (<3 weeks). Later, these rates decrease with age. This age-dependent infectivity remains largely unexplored. This study investigated the changes in intestinal morphology, number of mucus-producing cells and expression level of coronavirus receptors in three age groups of pigs. Villus height and crypt depth increased with age from 3 days to 3 months in duodenum and ileum but not in mid-jejunum, where the villus height decreased from 580 µm at 3 days to 430 µm at 3 months. Enterocyte length-to-width ratio increased from 3 days to 3 months in all intestinal regions. The number of mucus-producing cells increased with age in the intestinal villi and crypts. The Brunner's glands of the duodenum contained the highest concentration of mucus-producing cells. The expression of coronavirus receptor APN was highest in the small intestinal villi at all ages. DPP4 expression slightly decreased over time in jejunum and ileum; it was highest in the ileal villi of 3-day-old piglets (70.2% of cells). ACE2 and TMPRSS2 positive cells increased with age in jejunal and ileal crypts and were particularly dominant in the ileal crypts (> 45% of cells). Except for the expression of DPP4 in the jejunum and ileum of young pigs, the expression pattern of the selected coronavirus receptors was very different and not correlated with the age-dependent susceptibility to viral infections. In contrast, the number of mucus-producing cells increased over time and may play an essential role in protecting enteric mucosae against intestinal viruses.
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Affiliation(s)
- Waqar Saleem
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium.
| | - Xiaolei Ren
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Wim Van Den Broeck
- Department of Morphology, Imaging, Orthopedics, Rehabilitation and Nutrition, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Hans Nauwynck
- Laboratory of Virology, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
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Abstract
The existence of coronaviruses has been known for many years. These viruses cause significant disease that primarily seems to affect agricultural species. Human coronavirus disease due to the 2002 outbreak of Severe Acute Respiratory Syndrome and the 2012 outbreak of Middle East Respiratory Syndrome made headlines; however, these outbreaks were controlled, and public concern quickly faded. This complacency ended in late 2019 when alarms were raised about a mysterious virus responsible for numerous illnesses and deaths in China. As we now know, this novel disease called Coronavirus Disease 2019 (COVID-19) was caused by Severe acute respiratory syndrome-related-coronavirus-2 (SARS-CoV-2) and rapidly became a worldwide pandemic. Luckily, decades of research into animal coronaviruses hastened our understanding of the genetics, structure, transmission, and pathogenesis of these viruses. Coronaviruses infect a wide range of wild and domestic animals, with significant economic impact in several agricultural species. Their large genome, low dependency on host cellular proteins, and frequent recombination allow coronaviruses to successfully cross species barriers and adapt to different hosts including humans. The study of the animal diseases provides an understanding of the virus biology and pathogenesis and has assisted in the rapid development of the SARS-CoV-2 vaccines. Here, we briefly review the classification, origin, etiology, transmission mechanisms, pathogenesis, clinical signs, diagnosis, treatment, and prevention strategies, including available vaccines, for coronaviruses that affect domestic, farm, laboratory, and wild animal species. We also briefly describe the coronaviruses that affect humans. Expanding our knowledge of this complex group of viruses will better prepare us to design strategies to prevent and/or minimize the impact of future coronavirus outbreaks.
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Key Words
- bcov, bovine coronavirus
- ccov, canine coronavirus
- cov(s), coronavirus(es)
- covid-19, coronavirus disease 2019
- crcov, canine respiratory coronavirus
- e, coronaviral envelope protein
- ecov, equine coronavirus
- fcov, feline coronavirus
- fipv, feline infectious peritonitis virus
- gfcov, guinea fowl coronavirus
- hcov, human coronavirus
- ibv, infectious bronchitis virus
- m, coronaviral membrane protein
- mers, middle east respiratory syndrome-coronavirus
- mhv, mouse hepatitis virus
- pedv, porcine epidemic diarrhea virus
- pdcov, porcine deltacoronavirus
- phcov, pheasant coronavirus
- phev, porcine hemagglutinating encephalomyelitis virus
- prcov, porcine respiratory coronavirus
- rt-pcr, reverse transcriptase polymerase chain reaction
- s, coronaviral spike protein
- sads-cov, swine acute diarrhea syndrome-coronavirus
- sars-cov, severe acute respiratory syndrome-coronavirus
- sars-cov-2, severe acute respiratory syndrome–coronavirus–2
- tcov, turkey coronavirus
- tgev, transmissible gastroenteritis virus
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Affiliation(s)
- Alfonso S Gozalo
- Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland;,
| | - Tannia S Clark
- Office of Laboratory Animal Medicine, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland
| | - David M Kurtz
- Comparative Medicine Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, Durham, North Carolina
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29
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Diagnostic Approach to Enteric Disorders in Pigs. Animals (Basel) 2023; 13:ani13030338. [PMID: 36766227 PMCID: PMC9913336 DOI: 10.3390/ani13030338] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/21/2023] Open
Abstract
The diagnosis of enteric disorders in pigs is extremely challenging, at any age. Outbreaks of enteric disease in pigs are frequently multifactorial and multiple microorganisms can co-exist and interact. Furthermore, several pathogens, such as Clostridium perfrigens type A, Rotavirus and Lawsonia intracellularis, may be present in the gut in the absence of clinical signs. Thus, diagnosis must be based on a differential approach in order to develop a tailored control strategy, considering that treatment and control programs for enteric diseases are pathogen-specific. Correct sampling for laboratory analyses is fundamental for the diagnostic work-up of enteric disease in pigs. For example, histology is the diagnostic gold standard for several enteric disorders, and sampling must ensure the collection of representative and optimal intestinal samples. The aim of this paper is to focus on the diagnostic approach, from sampling to the aetiological diagnosis, of enteric disorders in pigs due to different pathogens during the different phases of production.
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30
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Wang W, Fan B, Zhang X, Guo R, Zhao Y, Zhou J, Zhou J, Peng Q, Zhu M, Li J, Li B. Development of a colloidal gold immunochromatographic assay strip using monoclonal antibody for rapid detection of porcine deltacoronavirus. Front Microbiol 2023; 13:1074513. [PMID: 36687576 PMCID: PMC9849564 DOI: 10.3389/fmicb.2022.1074513] [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: 10/19/2022] [Accepted: 12/13/2022] [Indexed: 01/07/2023] Open
Abstract
Porcine deltacoronavirus (PDCoV) cause diarrhea and dehydration in newborn piglets and has the potential for cross-species transmission. Rapid and early diagnosis is important for preventing and controlling infectious disease. In this study, two monoclonal antibodies (mAbs) were generated, which could specifically recognize recombinant PDCoV nucleocapsid (rPDCoV-N) protein. A colloidal gold immunochromatographic assay (GICA) strip using these mAbs was developed to detect PDCoV antigens within 15 min. Results showed that the detection limit of the GICA strip developed in this study was 103 TCID50/ml for the suspension of virus-infected cell culture and 0.125 μg/ml for rPDCoV-N protein, respectively. Besides, the GICA strip showed high specificity with no cross-reactivity with other porcine pathogenic viruses. Three hundred and twenty-five fecal samples were detected for PDCoV using the GICA strip and reverse transcription-quantitative real-time PCR (RT-qPCR). The coincidence rate of the GICA strip and RT-qPCR was 96.9%. The GICA strip had a diagnostic sensitivity of 88.9% and diagnostic specificity of 98.5%. The specific and efficient detection by the strip provides a convenient, rapid, easy to use and valuable diagnostic tool for PDCoV under laboratory and field conditions.
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Affiliation(s)
- Wei Wang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Shaoxing Academy of Biomedicine of Zhejiang Sci-Tech University, Shaoxing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China,Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, Guangzhou, China
| | - Baochao Fan
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Xuehan Zhang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Rongli Guo
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Yongxiang Zhao
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Junming Zhou
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jinzhu Zhou
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Qi Peng
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Mingjun Zhu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jizong Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Shaoxing Academy of Biomedicine of Zhejiang Sci-Tech University, Shaoxing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China,Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, Guangzhou, China,*Correspondence: Jizong Li,
| | - Bin Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture and Rural Affairs, Nanjing, China,Shaoxing Academy of Biomedicine of Zhejiang Sci-Tech University, Shaoxing, China,Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base of Ministry of Science and Technology, Nanjing, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China,Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, Guangzhou, China,Bin Li,
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31
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Zhai K, Zhang Z, Liu X, Lv J, Zhang L, Li J, Ma Z, Wang Y, Guo H, Zhang Y, Pan L. Mucosal immune responses induced by oral administration of recombinant Lactococcus lactis expressing the S1 protein of PDCoV. Virology 2023; 578:180-189. [PMID: 36586181 DOI: 10.1016/j.virol.2022.12.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/20/2022] [Accepted: 12/20/2022] [Indexed: 12/27/2022]
Abstract
Porcine deltacoronavirus is an evolving coronavirus that primarily infects the intestine and may lead to intestinal disease in piglets. Up to now, no commercial vaccination is readily accessible to protect against the spread of PDCoV. Lactococcus lactis has been shown to have good immune efficacy and safety and can be used as a genetically engineered vaccine to deliver antigens. In this research, we utilized L. lactis NZ9000 to provide the S1 protein orally and improved the delivery efficiency by connecting the M cell targeting ligand Co1 with the S1 protein of PDCoV in tandem to obtain the recombinant protein S1-Co1. We successfully constructed two recombinant strains capable of expressing PDCoV-S1 and PDCoV-S1-Co1 proteins (i.e., L. lactis NZ9000-S1 and L. lactis NZ9000-S1-Co1), and their immunogenic capacity was evaluated in mice. Our study shows that Lactococcus is an advantageous bacterial live vector vaccine and is anticipated as a potential PDCoV vaccination option.
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Affiliation(s)
- Kaige Zhai
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Zhongwang Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Xinsheng Liu
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Jianliang Lv
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Liping Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Jiahao Li
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Zhongyuan Ma
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Yonglu Wang
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Huichen Guo
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Yongguang Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Li Pan
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
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32
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Li M, Guo L, Feng L. Interplay between swine enteric coronaviruses and host innate immune. Front Vet Sci 2022; 9:1083605. [PMID: 36619958 PMCID: PMC9814124 DOI: 10.3389/fvets.2022.1083605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022] Open
Abstract
Swine enteric coronavirus (SeCoV) causes acute diarrhea, vomiting, dehydration, and high mortality in neonatal piglets, causing severe losses worldwide. SeCoV includes the following four members: transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), porcine delta coronavirus (PDCoV), and swine acute diarrhea syndrome coronavirus (SADS-CoV). Clinically, mixed infections with several SeCoVs, which are more common in global farms, cause widespread infections. It is worth noting that PDCoV has a broader host range, suggesting the risk of PDCoV transmission across species, posing a serious threat to public health and global security. Studies have begun to focus on investigating the interaction between SeCoV and its host. Here, we summarize the effects of viral proteins on apoptosis, autophagy, and innate immunity induced by SeCoV, providing a theoretical basis for an in-depth understanding of the pathogenic mechanism of coronavirus.
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33
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Thakor JC, Dinesh M, Manikandan R, Bindu S, Sahoo M, Sahoo D, Dhawan M, Pandey MK, Tiwari R, Emran TB, Dhama K, Chaicumpa W. Swine coronaviruses (SCoVs) and their emerging threats to swine population, inter-species transmission, exploring the susceptibility of pigs for SARS-CoV-2 and zoonotic concerns. Vet Q 2022; 42:125-147. [PMID: 35584308 PMCID: PMC9225692 DOI: 10.1080/01652176.2022.2079756] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 03/23/2022] [Accepted: 05/16/2022] [Indexed: 12/23/2022] Open
Abstract
Swine coronaviruses (SCoVs) are one of the most devastating pathogens affecting the livelihoods of farmers and swine industry across the world. These include transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), porcine respiratory coronavirus (PRCV), porcine hemagglutinating encephalomyelitis virus (PHEV), swine acute diarrhea syndrome coronavirus (SADS-CoV), and porcine delta coronavirus (PDCoV). Coronaviruses infect a wide variety of animal species and humans because these are having single stranded-RNA that accounts for high mutation rates and thus could break the species barrier. The gastrointestinal, cardiovascular, and nervous systems are the primary organ systems affected by SCoVs. Infection is very common in piglets compared to adult swine causing high mortality in the former. Bat is implicated to be the origin of all CoVs affecting animals and humans. Since pig is the only domestic animal in which CoVs cause a wide range of diseases; new coronaviruses with high zoonotic potential could likely emerge in the future as observed in the past. The recently emerged severe acute respiratory syndrome coronavirus virus-2 (SARS-CoV-2), causing COVID-19 pandemic in humans, has been implicated to have animal origin, also reported from few animal species, though its zoonotic concerns are still under investigation. This review discusses SCoVs and their epidemiology, virology, evolution, pathology, wildlife reservoirs, interspecies transmission, spill-over events and highlighting their emerging threats to swine population. The role of pigs amid ongoing SARS-CoV-2 pandemic will also be discussed. A thorough investigation should be conducted to rule out zoonotic potential of SCoVs and to design appropriate strategies for their prevention and control.
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Affiliation(s)
- Jigarji C. Thakor
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Murali Dinesh
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Rajendran Manikandan
- Immunology Section, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Suresh Bindu
- Immunology Section, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Monalisa Sahoo
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Diptimayee Sahoo
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Manish Dhawan
- Department of Microbiology, Punjab Agricultural University, Ludhiana, India
- The Trafford Group of Colleges, Manchester, United Kingdom
| | - Megha Katare Pandey
- Department of Translational Medicine Center, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Ruchi Tiwari
- Department of Veterinary Microbiology and Immunology, College of Veterinary Sciences, Uttar Pradesh Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, India
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India
| | - Wanpen Chaicumpa
- Center of Research Excellence on Therapeutic Proteins and Antibody Engineering, Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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34
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More‐Bayona JA, Ramirez‐Velasquez M, Hause B, Nelson E, Rivera‐Geronimo H. First isolation and whole genome characterization of porcine deltacoronavirus from pigs in Peru. Transbound Emerg Dis 2022; 69:e1561-e1573. [PMID: 35184388 PMCID: PMC9790302 DOI: 10.1111/tbed.14489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 12/30/2022]
Abstract
Porcine deltacoronavirus is a newly emergent enteric pathogen affecting swine farms worldwide. It has been detected in several countries in Europe, Asia and North America; yet, it has not been reported in South America. In November 2019, an enteric disease outbreak in a pig farm located in San Martin, Peru, was reported along with submission of three intestinal samples from pigs who succumbed to the disease. Samples were processed for molecular detection by qRT-PCR, viral isolation and further sequencing analysis. A taqman-based RT-PCR was performed to differentiate among the most relevant swine enteric coronaviruses described to date. All samples were positive to porcine deltacoronavirus with a cycle threshold (Ct) value between 9 and 14, revealing a high viral load, while testing negative to porcine epidemic diarrhea and transmissible gastroenteritis viruses. Following detection, viral isolation was performed using PK-15 and Vero cell lines. After 5 days of inoculation, no cytopathic effect was observed. A second blind passage allowed the observation of cytopathic effect on PK-15 cells, while it remained absent in Vero cells. A fluorescence test using an anti-N monoclonal antibody confirmed viral replication. One sample was processed for whole genome sequencing (WGS). In short, raw reads were imported into CLC genomics and assembled de novo. Out of 479k reads generated from the sample, 436k assembled into a 25,501 bp contig which was 99.5% identical to a reference porcine deltacoronavirus strain from the USA within the North American phylogroup. Yet, there are relevant differences at the nucleotide and amino acid levels compared with previously described porcine deltacoronavirus strains. Altogether, our findings represent the first report of porcine deltacoronavirus in South America, which provides information of its evolutionary origin. Thus, this study offers new insights into the molecular epidemiology of porcine deltacoronavirus infections in the swine industry.
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Affiliation(s)
- Juan A. More‐Bayona
- Laboratory of VirologyFaculty of Veterinary MedicineUniversidad Nacional Mayor de San MarcosLimaPeru
| | - Mercy Ramirez‐Velasquez
- Laboratory of VirologyFaculty of Veterinary MedicineUniversidad Nacional Mayor de San MarcosLimaPeru
| | - Ben Hause
- Cambridge TechnologiesWorthingtonMinnesotaUSA
| | - Eric Nelson
- Department of Veterinary and Biomedical SciencesSouth Dakota State UniversityBrookingsSouth DakotaUSA
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Zeng J, Wang W, Zhou L, Ge X, Han J, Guo X, Chen Y, Zhang Y, Yang H. A nucleic acid detection assay combining reverse transcription recombinase-aided amplification with a lateral flow dipstick for the rapid visual detection of porcine deltacoronavirus. Virulence 2022; 13:1471-1485. [PMID: 36005235 PMCID: PMC9450908 DOI: 10.1080/21505594.2022.2116157] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an emerging enteropathogen causing severe diarrhoea, dehydration, and death in nursing piglets and enormous economic losses for the global swine industry. Furthermore, it can infect multiple animal species including humans. Therefore, a rapid, definitive diagnostic assay is required for the effective control of this zoonotic pathogen. To identify PDCoV, we developed a nucleic acid detection assay combining reverse transcription recombinase-aided amplification (RT-RAA) with a lateral flow dipstick (LFD) targeting the highly conserved genomic region in the ORF1b gene. The RT-RAA-LFD assay exhibited good PDCoV detection reproducibility and repeatability and could be completed within 11 min. Ten minutes at 40 °C was required for nucleic acid amplification and 1 min at room temperature was needed for the visual LFD readout. The assay specifically detected PDCoV and did not cross-react with any other major swine pathogens. The 95% limit of detection (LOD) was 3.97 median tissue culture infectious dose PDCoV RNA per reaction. This performance was comparable to that of a reference TaqMan-based real-time RT-PCR (trRT-PCR) assay for PDCoV. Of 149 swine small intestine, rectal swab, and serum samples, 71 and 75 tested positive for PDCoV according to RT-RAA-LFD and trRT-PCR, respectively. The diagnostic coincidence rate for both assays was 97.32% (145/149) and the kappa value was 0.946 (p < 0.001). Overall, the RT-RAA-LFD assay is a user-friendly diagnostic tool that can rapidly and visually detect PDCoV.
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Affiliation(s)
- Jianyu Zeng
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Wenlong Wang
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Lei Zhou
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Xinna Ge
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Jun Han
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Xin Guo
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Yanhong Chen
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Yongning Zhang
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
| | - Hanchun Yang
- Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing,P.R. China
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36
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Development of a Nucleocapsid Protein-Based Blocking ELISA for the Detection of Porcine Deltacoronavirus Antibodies. Viruses 2022; 14:v14081815. [PMID: 36016437 PMCID: PMC9412986 DOI: 10.3390/v14081815] [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: 07/14/2022] [Revised: 08/06/2022] [Accepted: 08/17/2022] [Indexed: 11/20/2022] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an emerging enteropathogen which mainly causes diarrhea, dehydration and death in nursing piglets, threatening the global swine industry. Moreover, it can infect multiple animal species and humans. Hence, reliable diagnostic assays are needed to better control this zoonotic pathogen. Here, a blocking ELISA was developed using a recombinant nucleocapsid (N) protein as the coating antigen paired with an N-specific monoclonal antibody (mAb) as the detection antibody. The percent inhibition (PI) of the ELISA was determined using 384 swine serum samples, with an indirect immunofluorescence assay (IFA) as the reference method. Through receiver operating characteristic analysis in conjunction with Youden’s index, the optimal PI cut-off value was determined to be 51.65%, which corresponded to a diagnostic sensitivity of 98.79% and a diagnostic specificity of 100%. Of the 330 serum samples tested positive via IFA, 326 and 4 were tested positive and negative via the ELISA, respectively, while the 54 serum samples tested negative via IFA were all negative via the ELISA. The overall coincidence rate between the two assays was 98.96% (380/384). The ELISA exhibited good repeatability and did not cross-react with antisera against other swine pathogens. Overall, this is the first report on developing a blocking ELISA for PDCoV serodiagnosis.
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37
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Yen L, Magtoto R, Mora-Díaz JC, Carrillo-Ávila JA, Zhang J, Cheng TY, Magtoto P, Nelli RK, Baum DH, Zimmerman JJ, Giménez-Lirola LG. The N-terminal Subunit of the Porcine Deltacoronavirus Spike Recombinant Protein (S1) Does Not Serologically Cross-react with Other Porcine Coronaviruses. Pathogens 2022; 11:pathogens11080910. [PMID: 36015031 PMCID: PMC9414728 DOI: 10.3390/pathogens11080910] [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: 07/25/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
Porcine deltacoronavirus (PDCoV), belonging to family Coronaviridae and genus Deltacoronavirus, is a major enteric pathogen in swine. Accurate PDCoV diagnosis relying on laboratory testing and antibody detection is an important approach. This study evaluated the potential of the receptor-binding subunit of the PDCoV spike protein (S1), generated using a mammalian expression system, for specific antibody detection via indirect enzyme-linked immunosorbent assay (ELISA). Serum samples were collected at day post-inoculation (DPI) −7 to 42, from pigs (n = 83) experimentally inoculated with different porcine coronaviruses (PorCoV). The diagnostic sensitivity of the PDCoV S1-based ELISA was evaluated using serum samples (n = 72) from PDCoV-inoculated animals. The diagnostic specificity and potential cross-reactivity of the assay was evaluated on PorCoV-negative samples (n = 345) and samples collected from pigs experimentally inoculated with other PorCoVs (n = 472). The overall diagnostic performance, time of detection, and detection rate over time varied across different S/P cut-offs, estimated by Receiver Operating Characteristic (ROC) curve analysis. The higher detection rate in the PDCoV group was observed after DPI 21. An S/P cut-off of 0.25 provided 100% specificity with no serological cross-reactivity against other PorCoV. These results support the use of S1 protein-based ELISA for accurate detection of PDCoV infections, transference of maternal antibodies, or active surveillance.
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Affiliation(s)
- Lu Yen
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Ronaldo Magtoto
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Juan Carlos Mora-Díaz
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | | | - Jianqiang Zhang
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Ting-Yu Cheng
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Ohio State University, Columbus, OH 43210, USA
| | - Precy Magtoto
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
- College of Veterinary Medicine, Pampanga State Agricultural University, Pampanga 2011, Philippines
| | - Rahul K. Nelli
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - David H. Baum
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Jeffrey J. Zimmerman
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
| | - Luis G. Giménez-Lirola
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
- Correspondence:
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Development and Clinical Applications of a 5-Plex Real-Time RT-PCR for Swine Enteric Coronaviruses. Viruses 2022; 14:v14071536. [PMID: 35891517 PMCID: PMC9324624 DOI: 10.3390/v14071536] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/09/2022] [Accepted: 07/12/2022] [Indexed: 01/21/2023] Open
Abstract
A PEDV/PDCoV/TGEV/SADS-CoV/XIPC 5-plex real-time RT-PCR was developed and validated for the simultaneous detection and differentiation of four swine enteric coronaviruses (PEDV, PDCoV, TGEV and SADS-CoV) in one PCR reaction (XIPC serves as an exogenous internal positive control). The 5-plex PCR had excellent analytical specificity, analytical sensitivity, and repeatability based on the testing of various viral and bacterial pathogens, serial dilutions of virus isolates, and in vitro transcribed RNAs. The 5-plex PCR had comparable diagnostic performance to a commercial PEDV/TGEV/PDCoV reference PCR, based on the testing of 219 clinical samples. Subsequently, 1807 clinical samples collected from various U.S. states during 2019–2021 were tested by the 5-plex PCR to investigate the presence of SADS-CoV in U.S. swine and the frequency of detecting swine enteric CoVs. All 1807 samples tested negative for SADS-CoV. Among the samples positive for swine enteric CoVs, there was a low frequency of detecting TGEV, an intermediate frequency of detecting PDCoV, and a high frequency of detecting PEDV. Although there is no evidence of SADS-CoV presence in the U.S. at present, the availability of the 5-plex PCR will enable us to conduct ongoing surveillance to detect and differentiate these viruses in swine samples and other host species samples as some of these coronaviruses can cause cross-species infection.
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Zhang Y, Zhang G, Ling J. Medicinal Fungi with Antiviral Effect. Molecules 2022; 27:molecules27144457. [PMID: 35889330 PMCID: PMC9322162 DOI: 10.3390/molecules27144457] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 02/07/2023] Open
Abstract
Pandemics from various viruses make natural organisms face challenges over and over again. Therefore, new antiviral drugs urgently need to be found to solve this problem. However, drug research and development is a very difficult task, and finding new antiviral compounds is desirable. A range of medicinal fungi such as Ganoderma lucidum and Cordyceps sinensis are widely used all over the world, and they can enhance human immunity and direct anti-virus activities and other aspects to play an antiviral role. Medicinal fungi are used as foods or as food supplements. In this review, the species of medicinal fungi with antiviral activity in recent decades and the mechanism of antiviral components were reviewed from the perspectives of human, animal, and plant viruses to provide a comprehensive theory based on better clinical utilization of medicinal fungi as antiviral agents.
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Affiliation(s)
- Yu Zhang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China;
| | - Guoying Zhang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China;
- Correspondence: (G.Z.); (J.L.); Tel.: +86-0531-89628200 (G.Z.); +86-0532-58631501 (J.L.)
| | - Jianya Ling
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China;
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
- Correspondence: (G.Z.); (J.L.); Tel.: +86-0531-89628200 (G.Z.); +86-0532-58631501 (J.L.)
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40
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Shen H, Wang S, Huang J, Lin Q, Zhang C, Liu Z, Zhang J, Liao M. A Novel, Cleaved Probe-Based Reverse Transcription Loop-Mediated Isothermal Amplification Method for Specific and Sensitive Detection of Porcine Deltacoronavirus. Front Vet Sci 2022; 9:896416. [PMID: 35812893 PMCID: PMC9261778 DOI: 10.3389/fvets.2022.896416] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/10/2022] [Indexed: 11/17/2022] Open
Abstract
Porcine deltacoronavirus (PDCoV) causes watery diarrhea, vomiting, and 30–40% mortality in newborn piglets. A simple, rapid, and sensitive method for PDCoV detection is valuable in its surveillance and control. Here, we developed a novel, cleaved probe-based reverse transcription loop-mediated isothermal amplification (CP-RT-LAMP) method for PDCoV detection. A cleaved probe with a ribonucleotide insertion that targeted the N gene of PDCoV was designed. During the reaction, the enzyme ribonuclease H2 is activated only when the cleaved probe is perfectly complementary to the template, leading to the hydrolytic release of a quencher moiety and signal output. This method can be easily used on a real-time fluorescence quantitative equipment or an on-site isothermal instrument combined with a smartphone. The specificity assay showed no cross-reactivity with other porcine enteric pathogens. This method had a detection limit of 25 copies/μL, suggesting comparable sensitivity with reverse transcription quantitative PCR (RT-qPCR). In detecting 100 clinical samples (48 fecal swab specimens and 52 intestinal specimens), the detection rate of the CP-RT-LAMP method (26%) was higher than that of RT-qPCR (17%). Thus, it is a highly specific and sensitive diagnostic method for PDCoV, with a great application potential for monitoring PDCoV in the laboratory or point-of-care testing in the field.
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Affiliation(s)
- Haiyan Shen
- Maoming Branch Center of Guangdong Laboratory for LingNan Modern Agricultural Science and Technology; Key Laboratory of Livestock Disease Prevention of Guangdong Province, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture and Rural Affairs; Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Songqi Wang
- National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control; Key Laboratory of Zoonoses, Ministry of Agriculture; Key Laboratory of Zoonoses Prevention and Control of Guangdong Province; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jun Huang
- College of Life Science and Engineering, Foshan University, Foshan, China
| | - Qijie Lin
- National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control; Key Laboratory of Zoonoses, Ministry of Agriculture; Key Laboratory of Zoonoses Prevention and Control of Guangdong Province; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture; College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Chunhong Zhang
- Maoming Branch Center of Guangdong Laboratory for LingNan Modern Agricultural Science and Technology; Key Laboratory of Livestock Disease Prevention of Guangdong Province, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture and Rural Affairs; Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Zhicheng Liu
- Maoming Branch Center of Guangdong Laboratory for LingNan Modern Agricultural Science and Technology; Key Laboratory of Livestock Disease Prevention of Guangdong Province, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture and Rural Affairs; Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Jianfeng Zhang
- Maoming Branch Center of Guangdong Laboratory for LingNan Modern Agricultural Science and Technology; Key Laboratory of Livestock Disease Prevention of Guangdong Province, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture and Rural Affairs; Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- *Correspondence: Ming Liao
| | - Ming Liao
- Maoming Branch Center of Guangdong Laboratory for LingNan Modern Agricultural Science and Technology; Key Laboratory of Livestock Disease Prevention of Guangdong Province, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture and Rural Affairs; Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Jianfeng Zhang
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41
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Peng Q, Zhang X, Li J, He W, Fan B, Ni Y, Liu M, Li B. Comprehensive analysis of codon usage pattern of porcine deltacoronavirus and its host adaptability. Transbound Emerg Dis 2022; 69:e2443-e2455. [DOI: 10.1111/tbed.14588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 05/01/2022] [Accepted: 05/03/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Qi Peng
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- Jiangsu Key Laboratory for Food Quality and Safety‐State Key Laboratory Cultivation Base Ministry of Science and Technology Nanjing 210014 China
- Jiangsu Co‐Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory of Zoonoses Yangzhou University Yangzhou 225009 China
| | - Xue Zhang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- Jiangsu Key Laboratory for Food Quality and Safety‐State Key Laboratory Cultivation Base Ministry of Science and Technology Nanjing 210014 China
- Key Laboratory of Animal Disease Diagnosis and Immunology, College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Jizong Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- Jiangsu Key Laboratory for Food Quality and Safety‐State Key Laboratory Cultivation Base Ministry of Science and Technology Nanjing 210014 China
- Jiangsu Co‐Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory of Zoonoses Yangzhou University Yangzhou 225009 China
| | - Wenlong He
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- College of Veterinary Medicine Hebei Agricultural University Baoding 071001 China
| | - Baochao Fan
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- Jiangsu Key Laboratory for Food Quality and Safety‐State Key Laboratory Cultivation Base Ministry of Science and Technology Nanjing 210014 China
- Jiangsu Co‐Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory of Zoonoses Yangzhou University Yangzhou 225009 China
| | - Yanxiu Ni
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- Jiangsu Key Laboratory for Food Quality and Safety‐State Key Laboratory Cultivation Base Ministry of Science and Technology Nanjing 210014 China
| | - Maojun Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- Jiangsu Key Laboratory for Food Quality and Safety‐State Key Laboratory Cultivation Base Ministry of Science and Technology Nanjing 210014 China
| | - Bin Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology Ministry of Agriculture Nanjing 210014 China
- Jiangsu Key Laboratory for Food Quality and Safety‐State Key Laboratory Cultivation Base Ministry of Science and Technology Nanjing 210014 China
- Jiangsu Co‐Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory of Zoonoses Yangzhou University Yangzhou 225009 China
- Key Laboratory of Animal Disease Diagnosis and Immunology, College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
- College of Veterinary Medicine Hebei Agricultural University Baoding 071001 China
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42
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Ma L, Lian K, Zhu M, Tang Y, Zhang M. Visual detection of porcine epidemic diarrhea virus by recombinase polymerase amplification combined with lateral flow dipstrip. BMC Vet Res 2022; 18:140. [PMID: 35436883 PMCID: PMC9013981 DOI: 10.1186/s12917-022-03232-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 03/28/2022] [Indexed: 12/05/2022] Open
Abstract
Background Porcine epidemic diarrhea virus (PEDV) is one of the most important enteric viruses causing diarrhea in pigs. The establishment of a rapid detection method applicable in field conditions will be conducive to early detection of pathogen and implementation of relevant treatment. A novel nucleic acid amplification method, recombinase polymerase amplification (RPA), has been widely used for infectious disease diagnosis. Results In the present study, a reverse transcription (RT)-RPA assay combined with lateral flow dipstrip (LFD) was established for the visual detection of PEDV by targeting the N gene. The RT-RPA-LFD assay detected as low as 102 copies/µL of PEDV genomic RNA standard. Moreover, the novel RT-RPA-LFD assay did not show cross-reactivity with common swine pathogens, demonstrating high specificity. The performance of the assay for detection of clinical samples was also evaluated. A total number of 86 clinical samples were tested by RT-RPA-LFD and RT-PCR. The detection results of RT-RPA-LFD were compared with those of RT-PCR, with a coincidence rate of 96.5%. Conclusion The newly established RT-RPA-LFD assay in our study had high sensitivity and specificity, with a potential to use in resource-limited areas and countries.
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Affiliation(s)
- Lei Ma
- School of Biotechnology and Food Engineering, Anyang Institute of Technology, Anyang, China. .,Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang, China.
| | - Kaiqi Lian
- School of Biotechnology and Food Engineering, Anyang Institute of Technology, Anyang, China.,Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang, China
| | - Mengjie Zhu
- School of Biotechnology and Food Engineering, Anyang Institute of Technology, Anyang, China.,Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang, China
| | - Yajie Tang
- School of Biotechnology and Food Engineering, Anyang Institute of Technology, Anyang, China.,Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang, China
| | - Mingliang Zhang
- School of Biotechnology and Food Engineering, Anyang Institute of Technology, Anyang, China. .,Henan Joint International Research Laboratory of Veterinary Biologics Research and Application, Anyang, China.
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43
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Detection of Four Porcine Enteric Coronaviruses Using CRISPR-Cas12a Combined with Multiplex Reverse Transcriptase Loop-Mediated Isothermal Amplification Assay. Viruses 2022; 14:v14040833. [PMID: 35458562 PMCID: PMC9032155 DOI: 10.3390/v14040833] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/04/2022] [Accepted: 04/14/2022] [Indexed: 12/12/2022] Open
Abstract
Porcine enteric coronaviruses have caused immense economic losses to the global pig industry, and pose a potential risk for cross-species transmission. The clinical symptoms of the porcine enteric coronaviruses (CoVs) are similar, making it difficult to distinguish between the specific pathogens by symptoms alone. Here, a multiplex nucleic acid detection platform based on CRISPR/Cas12a and multiplex reverse transcriptase loop-mediated isothermal amplification (RT-LAMP) was developed for the detection of four diarrhea CoVs: porcine epidemic diarrhea virus (PEDV), transmissible gastroenteritis virus (TGEV), porcine deltacoronavirus (PDCoV), and swine acute diarrhea syndrome coronavirus (SADS-CoV). With this strategy, we realized a visual colorimetric readout visible to the naked eye without specialized instrumentation by using a ROX-labeled single-stranded DNA-fluorescence-quenched (ssDNA-FQ) reporter. Our method achieved single-copy sensitivity with no cross-reactivity in the identification and detection of the target viruses. In addition, we successfully detected these four enteric CoVs from RNA of clinical samples. Thus, we established a rapid, sensitive, and on-site multiplex molecular differential diagnosis technology for porcine enteric CoVs.
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44
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Zhang Y, Song Y, Ren H, Zeng Q, Yuan Y, Xia L, Wei Z. Preparation of a Single-Chain Antibody against Nucleocapsid Protein of Porcine Deltacoronavirus by Phage Display Technology. Viruses 2022; 14:v14040772. [PMID: 35458502 PMCID: PMC9030028 DOI: 10.3390/v14040772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/31/2022] [Accepted: 04/02/2022] [Indexed: 11/30/2022] Open
Abstract
Porcine deltacoronavirus (PDCoV) mainly causes severe diarrhea and intestinal pathological damage in piglets and poses a serious threat to pig farms. Currently, no effective reagents or vaccines are available to control PDCoV infection. Single-chain fragment variable (scFv) antibodies can effectively inhibit virus infection and may be a potential therapeutic reagent for PDCoV treatment. In this study, a porcine phage display antibody library from the peripheral blood lymphocytes of piglets infected with PDCoV was constructed and used to select PDCoV-specific scFv. The library was screened with four rounds of biopanning using the PDCoV N protein, and the colony with the highest affinity to the PDCoV N protein was obtained (namely, N53). Then, the N53-scFv gene fragment was cloned into plasmid pFUSE-hIgG-Fc2 and expressed in HEK-293T cells. The scFv-Fc antibody N53 (namely, scFv N53) was purified using Protein A-sepharose. The reactive activity of the purified antibody with the PDCoV N protein was confirmed by indirect enzyme-linked immunosorbent assay (ELISA), western blot and indirect immunofluorescence assay (IFA). Finally, the antigenic epitopes that the scFv N53 recognized were identified by a series of truncated PDCoV N proteins. The amino acid residues 82GELPPNDTPATTRVT96 of the PDCoV N protein were verified as the minimal epitope that can be recognized by the scFv-Fc antibody N53. In addition, the interaction between the scFv-Fc antibody N53 and the PDCoV N protein was further analyzed by molecule docking. In conclusion, our research provides some references for the treatment and prevention of PDCoV.
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Affiliation(s)
- Yixuan Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Yue Song
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
- Molecule Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, China
| | - Haojie Ren
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Quan Zeng
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Yixin Yuan
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
| | - Lu Xia
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
- Correspondence: (L.X.); (Z.W.)
| | - Zhanyong Wei
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China; (Y.Z.); (Y.S.); (H.R.); (Q.Z.); (Y.Y.)
- Key Laboratory for Animal-Derived Food Safety of Henan Province, Henan Agricultural University, Zhengzhou 450046, China
- Correspondence: (L.X.); (Z.W.)
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Coronavirus Porcine Deltacoronavirus Upregulates MHC Class I Expression through RIG-I/IRF1-Mediated NLRC5 Induction. J Virol 2022; 96:e0015822. [PMID: 35311551 DOI: 10.1128/jvi.00158-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Major histocompatibility complex class I (MHC-I) and MHC-II molecules, mainly being responsible for the processing and presentation of intracellular or extracellular antigen, respectively, are critical for antiviral immunity. Here, we reported that porcine deltacoronavirus (PDCoV) with the zoonotic potential and potential spillover from pigs to humans, upregulated the expressions of porcine MHC-I (swine leukocyte antigen class I, SLA-I) molecules and SLA-I antigen presentation associated genes instead of porcine MHC-II (SLA-II) molecules both in primary porcine enteroids and swine testicular (ST) cells at the late stage of infection, and this finding was verified in vivo. Moreover, the induction of SLA-I molecules by PDCoV infection was mediated through enhancing the expression of NOD-like receptor (NLR) family caspase recruitment domain-containing 5 (NLRC5). Mechanistic studies demonstrated that PDCoV infection robustly elevated retinoic acid-inducible gene I (RIG-I) expression, and further initiated the downstream type I interferon beta (IFN-β) production, which led to the upregulation of NLRC5 and SLA-I genes. Likewise, interferon regulatory factor 1 (IRF1) elicited by PDCoV infection directly activated the promoter activity of NLRC5, resulting in an increased expression of NLRC5 and SLA-I upregulation. Taken together, our findings advance our understanding of how PDCoV manipulates MHC molecules, and knowledge that could help inform the development of therapies and vaccines against PDCoV. IMPORTANCE MHC-I molecules play a crucial role in antiviral immunity by presenting intracellular antigens to CD8+T lymphocytes and eliminating virus-infected cells by natural killer cells' "missing-self recognition." However, the manipulation of MHC molecules by coronaviruses remains poorly understood. Here, we demonstrated that PDCoV, a zoonotic potential coronavirus efficiently infecting cells from broad species, greatly increased the expressions of porcine MHC-I (SLA-I) molecules and MHC-I antigen presentation associated genes but not porcine MHC-II (SLA-II) molecules both in vitro and in vivo. Mechanistically, the upregulation of MHC-I molecules by PDCoV infection required the master transactivator of MHC-I, NLRC5, which was mediated not only by RIG-I-initiated type I IFN signaling pathway but also by IRF1 induced by PDCoV as it could activate NLRC5 promoter activity. These results provide significant insights into the modification of the MHC class I pathway and may provide a potential therapeutic intervention for PDCoV.
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Ren Z, Jia G, He H, Ding T, Yu Y, Zuo Z, Hu Y, Zhong Z, Yu S, Deng H, Shen L, Cao S, Peng G, Wang Y, Cai D, Gou L, Ma X, Liu H, Zhou Z, Deng Y, Yang D, Deng J. Antiviral Effect of Selenomethionine on Porcine Deltacoronavirus in Pig Kidney Epithelial Cells. Front Microbiol 2022; 13:846747. [PMID: 35242124 PMCID: PMC8886123 DOI: 10.3389/fmicb.2022.846747] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 01/24/2022] [Indexed: 01/28/2023] Open
Abstract
Porcine deltacoronavirus (PDCoV) is an emerging porcine intestinal coronavirus in recent years, which mainly causes different degrees of vomiting and diarrhea in piglets and has caused great harm to the swine husbandry worldwide since its report. Selenium is an essential trace element for organisms and has been demonstrated to have antiviral effects. In this study, pig kidney epithelial (LLC-PK) cells were used to study the antiviral activity of selenomethionine (Se-Met) (2, 4, 8, and 16 μM) against PDCoV by detecting the replication of the virus, the expression of the mitochondrial antiviral signal protein (MAVS) protein, and the phosphorylation of interferon regulatory factor-3 (IRF-3), IFN-α, and IFN-β, and the changes in glutathione content, glutathione peroxidase, superoxide dismutase activity, and hydrogen peroxide content in the cells. The results showed that Se-Met at higher than physiological concentrations (16 μM) could significantly inhibit the replication of PDCoV in LLC-PK cells and enhance the expression of MAVS protein and the phosphorylation of IRF-3. In addition, Se-Met also improved the intracellular production of IFNα/β and antioxidant capacity with increasing doses. These data suggest that the availability of selenium through selenomethionine supports the antiviral response in porcine kidney cells, and the specific mechanism is attributed to the improved cellular antioxidant capacity and activation of the MAVS pathway by Se-Met.
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Affiliation(s)
- Zhihua Ren
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Guilin Jia
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Hongyi He
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Ting Ding
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yueru Yu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - ZhiCai Zuo
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yanchun Hu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Zhijun Zhong
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Shumin Yu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Huidan Deng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Liuhong Shen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Suizhong Cao
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Guangneng Peng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Ya Wang
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Dongjie Cai
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Liping Gou
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xiaoping Ma
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Haifeng Liu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Ziyao Zhou
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Youtian Deng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Dingyong Yang
- College of Animal Husbandry and Veterinary Medicine, Chengdu Agricultural College, Chengdu, China
| | - Junliang Deng
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
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Li S, Xiao D, Zhao Y, Zhang L, Chen R, Liu W, Wen Y, Liao Y, Wen Y, Wu R, Han X, Zhao Q, Du S, Yan Q, Wen X, Cao S, Huang X. Porcine Deltacoronavirus (PDCoV) Entry into PK-15 Cells by Caveolae-Mediated Endocytosis. Viruses 2022; 14:496. [PMID: 35336903 PMCID: PMC8950576 DOI: 10.3390/v14030496] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/19/2022] [Accepted: 02/25/2022] [Indexed: 01/07/2023] Open
Abstract
(1) Background: Porcine deltacoronavirus (PDCoV) is a newly emerged enteric virus affecting pig breeding industries worldwide, and its pathogenic mechanism remains unclear. (2) Methods: In this study, we preliminarily identified the endocytic pathway of PDCoV in PK-15 cells, using six chemical inhibitors (targeting clathrin-mediated endocytosis, caveolae-mediated endocytosis, macropinocytosis pathway and endosomal acidification), overexpression of dominant-negative (DN) mutants to treat PK-15 cells and proteins knockdown. (3) Results: The results revealed that PDCoV entry was not affected after treatment with chlorpromazine (CPZ), 5-(N-ethyl-N-isopropyl) amiloride (EIPA)or ammonium chloride (NH4Cl), indicating that the entry of PDCoV into PK-15 cells were clathrin-, micropinocytosis-, PH-independent endocytosis. Conversely, PDCoV infection was sensitive to nystatin, dynasore and methyl-β-cyclodextrin (MβCD) with reduced PDCoV internalization, indicating that entry of PDCoV into PK-15 cells was caveolae-mediated endocytosis that required dynamin and cholesterol; indirect immunofluorescence and shRNA interference further validated these results. (4) Conclusions: In conclusion, PDCoV entry into PK-15 cells depends on caveolae-mediated endocytosis, which requires cholesterol and dynamin. Our finding is the first initial identification of the endocytic pathway of PDCoV in PK-15 cells, providing a theoretical basis for an in-depth understanding of the pathogenic mechanism of PDCoV and the design of new antiviral targets.
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Affiliation(s)
- Shiqian Li
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Dai Xiao
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Yujia Zhao
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Luwen Zhang
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Rui Chen
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Weizhe Liu
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Yimin Wen
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Yijie Liao
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Yiping Wen
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Rui Wu
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Xinfeng Han
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Qin Zhao
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Senyan Du
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Qigui Yan
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Xintian Wen
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
| | - Sanjie Cao
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
- Sichuan Science-Observation Experimental Station for Veterinary Drugs and Veterinary Diagnostic Technology, Ministry of Agriculture, Chengdu 611130, China
- National Animal Experiments Teaching Demonstration Center, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaobo Huang
- Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (S.L.); (D.X.); (Y.Z.); (L.Z.); (R.C.); (W.L.); (Y.W.); (Y.L.); (Y.W.); (R.W.); (X.H.); (Q.Z.); (S.D.); (Q.Y.); (X.W.); (S.C.)
- Sichuan Science-Observation Experimental Station for Veterinary Drugs and Veterinary Diagnostic Technology, Ministry of Agriculture, Chengdu 611130, China
- National Animal Experiments Teaching Demonstration Center, Sichuan Agricultural University, Chengdu 611130, China
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48
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Zhang K, Lin S, Li J, Deng S, Zhang J, Wang S. Modulation of Innate Antiviral Immune Response by Porcine Enteric Coronavirus. Front Microbiol 2022; 13:845137. [PMID: 35237253 PMCID: PMC8882816 DOI: 10.3389/fmicb.2022.845137] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 01/13/2022] [Indexed: 02/04/2023] Open
Abstract
Host’s innate immunity is the front-line defense against viral infections, but some viruses have evolved multiple strategies for evasion of antiviral innate immunity. The porcine enteric coronaviruses (PECs) consist of porcine epidemic diarrhea virus (PEDV), porcine deltacoronavirus (PDCoV), transmissible gastroenteritis coronavirus (TGEV), and swine acute diarrhea syndrome-coronavirus (SADS-CoV), which cause lethal diarrhea in neonatal pigs and threaten the swine industry worldwide. PECs interact with host cells to inhibit and evade innate antiviral immune responses like other coronaviruses. Moreover, the immune escape of porcine enteric coronaviruses is the key pathogenic mechanism causing infection. Here, we review the most recent advances in the interactions between viral and host’s factors, focusing on the mechanisms by which viral components antagonize interferon (IFN)-mediated innate antiviral immune responses, trying to shed light on new targets and strategies effective for controlling and eliminating porcine enteric coronaviruses.
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49
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Known Cellular and Receptor Interactions of Animal and Human Coronaviruses: A Review. Viruses 2022; 14:v14020351. [PMID: 35215937 PMCID: PMC8878323 DOI: 10.3390/v14020351] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 12/12/2022] Open
Abstract
This article aims to review all currently known interactions between animal and human coronaviruses and their cellular receptors. Over the past 20 years, three novel coronaviruses have emerged that have caused severe disease in humans, including SARS-CoV-2 (severe acute respiratory syndrome virus 2); therefore, a deeper understanding of coronavirus host-cell interactions is essential. Receptor-binding is the first stage in coronavirus entry prior to replication and can be altered by minor changes within the spike protein-the coronavirus surface glycoprotein responsible for the recognition of cell-surface receptors. The recognition of receptors by coronaviruses is also a major determinant in infection, tropism, and pathogenesis and acts as a key target for host-immune surveillance and other potential intervention strategies. We aim to highlight the need for a continued in-depth understanding of this subject area following on from the SARS-CoV-2 pandemic, with the possibility for more zoonotic transmission events. We also acknowledge the need for more targeted research towards glycan-coronavirus interactions as zoonotic spillover events from animals to humans, following an alteration in glycan-binding capability, have been well-documented for other viruses such as Influenza A.
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50
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Huang Y, Xu Z, Gu S, Nie M, Wang Y, Zhao J, Li F, Deng H, Huang J, Sun X, Zhu L. The recombinant pseudorabies virus expressing porcine deltacoronavirus spike protein is safe and effective for mice. BMC Vet Res 2022; 18:16. [PMID: 34983523 PMCID: PMC8725529 DOI: 10.1186/s12917-021-03115-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 12/14/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Porcine deltacoronavirus (PDCoV) is a new pathogenic porcine intestinal coronavirus, which has appeared in many countries since 2012. PDCoV disease caused acute diarrhea, vomiting, dehydration and death in piglets, resulted in significant economic loss to the pig industry. However, there is no commercially available vaccine for PDCoV. In this study, we constructed recombinant pseudorabies virus (rPRVXJ-delgE/gI/TK-S) expressing PDCoV spike (S) protein and evaluated its safety and immunogenicity in mice. RESULTS The recombinant strain rPRVXJ-delgE/gI/TK-S obtained by CRISPR/Cas gE gene editing technology and homologous recombination technology has genetic stability in baby hamster syrian kidney-21 (BHK-21) cells and is safe to mice. After immunizing mice with rPRVXJ-delgE/gI/TK-S, the expression levels of IFN-γ and IL-4 in peripheral blood of mice were up-regulated, the proliferation of spleen-specific T lymphocytes and the percentage of CD4+ and CD8+ lymphocytes in mice spleen was increased. rPRVXJ-delgE/gI/TK-S showed good immunogenicity for mice. On the seventh day after booster immunity, PRV gB and PDCoV S specific antibodies were detected in mice, and the antibody level continued to increase, and the neutralizing antibody level reached the maximum at 28 days post- immunization (dpi). The recombinant strain can protect mice with 100% from the challenge of virulent strain (PRV XJ) and accelerate the detoxification of PDCoV in mice. CONCLUSION The recombinant rPRVXJ-delgE/gI/TK-S strain is safe and effective with strong immunogenicity and is expected to be a candidate vaccine against PDCoV and PRV.
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Affiliation(s)
- Yao Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Zhiwen Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, Sichuan, China
| | - Sirui Gu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Mincai Nie
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yuling Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Jun Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Fengqing Li
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,College of Animal Science, Xichang University, Xichang, 615000, Sichuan, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, Sichuan, China
| | - Jianbo Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xiangang Sun
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.,Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, Sichuan, China
| | - Ling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China. .,Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Chengdu, 611130, Sichuan, China.
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