1
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Yang M, Ma J, Chu Z, Cao X, Lu K, Shi X, Tong L, Yan C, Liu H, Wang X, Xiao S, Yang Z. Musashi1 inhibit the release of Newcastle disease viruses through preventing apoptosis of DF-1 cells. Poult Sci 2021; 100:101105. [PMID: 34062443 PMCID: PMC8173301 DOI: 10.1016/j.psj.2021.101105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/19/2021] [Accepted: 02/27/2021] [Indexed: 12/22/2022] Open
Abstract
The efficient proliferation of Newcastle disease virus (NDV) depends on its inhibition of host cell innate immunity. V protein acts as a nonstructural protein which plays a significant role in virus replication, whereas its function remains to be further explored. In this study, Musashi RNA binding protein 1 (MSI1) was selected and its interaction with V protein was further verified by Co-immunoprecipitation (Co-IP) and Immuno-colocalization test. Through the transfection of pCMV-HA-MSI1 in DF-1 cells, the overexpression of MSI1 reduced virus particles in the cell supernatant but not reduced mRNA and virus protein in cells pellet, which suggests that MSI1may act as a new antiviral molecule by inhibiting viral release. Cell early apoptosis was detected by flow cytometry (FCM), the result shows that overexpression of MSI1 inhibit cell apoptosis, implying MSI1 Inhibit virus release may through this way. Taken together, MSI1 and NDV V protein has a detectable interaction, and may block apoptosis to inhibit the release of NDV. However, this is the first report about the interaction between MSI1 and V protein of NDV that can inhibit the NDV replicated.
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Affiliation(s)
- Mengqing Yang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Jiangang Ma
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Zhili Chu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, China
| | - Xuhong Cao
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Kejia Lu
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Xiaolei Shi
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Lina Tong
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Chuanqi Yan
- Bureau of Agriculture and Rural Affairs of Huangdao, Qingdao, Shandong 266400, China
| | - Haijin Liu
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Xinglong Wang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Sa Xiao
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Zengqi Yang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi 712100, China.
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2
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Ni J, Hu S, Wang X, Liu X, Hu Z, Liu X. Activation of the extracellular signal-regulated kinase pathway is required for replication of Newcastle disease virus. Arch Virol 2021; 166:921-927. [PMID: 33486628 DOI: 10.1007/s00705-020-04938-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 11/11/2020] [Indexed: 11/30/2022]
Abstract
Replication of Newcastle disease virus (NDV) is regulated by various host mechanisms, but the role of the extracellular signal-regulated kinase (ERK) pathway in regulating NDV replication is an open question. In this study, the relationship between the ERK pathway and NDV replication was investigated. NDV activated the ERK signaling in chicken embryo fibroblasts at the late stage of infection, correlating to expression of viral proteins. Specific blockage of the ERK pathway activation significantly decreased the transcription and translation levels of viral genes as well as virus replication and the cytopathogenic effect caused by NDV. Our results demonstrate that activation of the ERK pathway is required for NDV replication.
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Affiliation(s)
- Jie Ni
- Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, China
| | - Shunlin Hu
- Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China, Yangzhou University, Yangzhou, 225009, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, No. 12, East Wenhui Rd, Yangzhou, 225009, Jiangsu, China
| | - Xiaoquan Wang
- Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China, Yangzhou University, Yangzhou, 225009, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, No. 12, East Wenhui Rd, Yangzhou, 225009, Jiangsu, China
| | - Xiaowen Liu
- Key Laboratory of Animal Infectious Diseases, School of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-Food Safety and Quality, Ministry of Agriculture of China, Yangzhou University, Yangzhou, 225009, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, No. 12, East Wenhui Rd, Yangzhou, 225009, Jiangsu, China
| | - Zenglei Hu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, China. .,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, No. 12, East Wenhui Rd, Yangzhou, 225009, Jiangsu, China.
| | - Xiufan Liu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, China. .,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, No. 12, East Wenhui Rd, Yangzhou, 225009, Jiangsu, China.
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3
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Virulence during Newcastle Disease Viruses Cross Species Adaptation. Viruses 2021; 13:v13010110. [PMID: 33467506 PMCID: PMC7830468 DOI: 10.3390/v13010110] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 01/29/2023] Open
Abstract
The hypothesis that host adaptation in virulent Newcastle disease viruses (NDV) has been accompanied by virulence modulation is reviewed here. Historical records, experimental data, and phylogenetic analyses from available GenBank sequences suggest that currently circulating NDVs emerged in the 1920-1940's from low virulence viruses by mutation at the fusion protein cleavage site. These viruses later gave rise to multiple virulent genotypes by modulating virulence in opposite directions. Phylogenetic and pathotyping studies demonstrate that older virulent NDVs further evolved into chicken-adapted genotypes by increasing virulence (velogenic-viscerotropic pathotypes with intracerebral pathogenicity indexes [ICPIs] of 1.6 to 2), or into cormorant-adapted NDVs by moderating virulence (velogenic-neurotropic pathotypes with ICPIs of 1.4 to 1.6), or into pigeon-adapted viruses by further attenuating virulence (mesogenic pathotypes with ICPIs of 0.9 to 1.4). Pathogenesis and transmission experiments on adult chickens demonstrate that chicken-adapted velogenic-viscerotropic viruses are more capable of causing disease than older velogenic-neurotropic viruses. Currently circulating velogenic-viscerotropic viruses are also more capable of replicating and of being transmitted in naïve chickens than viruses from cormorants and pigeons. These evolutionary virulence changes are consistent with theories that predict that virulence may evolve in many directions in order to achieve maximum fitness, as determined by genetic and ecologic constraints.
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4
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Anjum FR, Anam S, Rahman SU, Ali S, Aslam MA, Rizvi F, Asif M, Abdullah RM, Abaidullah M, Shakir MZ, Goraya MU. Anti-chicken type I IFN countermeasures by major avian RNA viruses. Virus Res 2020; 286:198061. [PMID: 32561378 DOI: 10.1016/j.virusres.2020.198061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/27/2020] [Accepted: 06/10/2020] [Indexed: 12/24/2022]
Abstract
Chicken type I interferons (type I IFNs) are key antiviral players of the chicken innate immune system and are considered potent antiviral agents against avian viral pathogens. Chicken type I IFNs are divided into three subtypes namely, chIFN-α, chIFN-β, and chIFN-κ. Viral pathogen-associated molecular patterns (PAMPs) recognized by their corresponding specific PRRs (pattern recognition receptors) induce the expression of chicken type I IFNs. Interaction of chicken type I IFNs with their subsequent IFN receptors results in the activation of the JAK-STAT pathway, which in turn activates hundreds of chicken interferon-stimulated genes (chISGs). These chISGs establish an antiviral state in neighboring cells and prevent the replication and dissemination of viruses within chicken cells. Chicken type I IFNs activate different pathways that constitute major antiviral innate defense mechanisms in chickens. However, evolutionary mechanisms in viruses have made them resistant to these antiviral players by manipulating host innate immune pathways. This review focuses on the underlying molecular mechanisms employed by avian RNA viruses to counteract chicken type I IFNs and chISGs through different viral proteins. This may help to understand host-pathogen interactions and the development of novel therapeutic strategies to control viral infections in poultry.
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Affiliation(s)
| | - Sidra Anam
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | - Sajjad Ur Rahman
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | - Sultan Ali
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | | | - Farzana Rizvi
- Department of Pathology, Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Asif
- Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | | | - Muhammad Abaidullah
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China
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Yang Y, Bu Y, Zhao J, Xue J, Xu G, Song Y, Zhao Y, Yang H, Zhang G. Appropriate amount of W protein of avian avulavirus 1 benefits viral replication and W shows strain-dependent subcellular localization. Virology 2019; 538:71-85. [PMID: 31580973 DOI: 10.1016/j.virol.2019.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/17/2019] [Accepted: 09/26/2019] [Indexed: 11/28/2022]
Abstract
In order to confirm the existence of W protein in Avian avulavirus 1 (AAvV-1) infected cells, two monoclonal antibodies were prepared. The presence of W protein in cells infected with lentogenic genotype II strain La Sota or velogenic genotype VII strain SG10 was confirmed with immunofluorescence and western blotting assays. WSG10 localized to the cytoplasm, whereas WLa Sota localized to the nucleus. The influence of W protein was investigated in vitro and in vivo with two AAvV-1 strains defective in the W C-terminus. The growth kinetic curves and pathogenicity tests in 3-week-old SPF chickens both showed that the replication abilities of strains with C-terminally deleted W proteins were lower than that of the parental strain. Restoring the appropriate dose of W protein increased the viral titers of these strains. The expression validation and functional exploration of W protein will facilitate our understanding of pathogenic mechanism of AAvV-1.
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Affiliation(s)
- Yanling Yang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Yawen Bu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jing Zhao
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jia Xue
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Gang Xu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Yang Song
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Ye Zhao
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Huiming Yang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Guozhong Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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6
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Wang C, Chu Z, Liu W, Pang Y, Gao X, Tang Q, Ma J, Lu K, Adam FEA, Dang R, Xiao S, Wang X, Yang Z. Newcastle disease virus V protein inhibits apoptosis in DF-1 cells by downregulating TXNL1. Vet Res 2018; 49:102. [PMID: 30290847 PMCID: PMC6389150 DOI: 10.1186/s13567-018-0599-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 09/08/2018] [Indexed: 02/06/2023] Open
Abstract
Many viral proteins are related to suppressing apoptosis in target cells and are hence beneficial to viral replication. The V protein of Newcastle disease virus (NDV) is one such protein that plays an important role in inhibiting apoptosis in a species-specific manner. However, to date, there have been no reports clarifying the antiapoptotic mechanisms of the V protein. The present study was undertaken to determine the apoptotic potential of the V protein in a chicken embryo fibroblast cell line (DF-1 cell) and to elucidate its molecular mechanisms of action. Here, a yeast two-hybrid system was used to screen the host proteins that interact with the V protein and identified thioredoxin-like protein 1 (TXNL1) as a potential binding partner. Immuno-colocalization of V protein and TXNL1 protein in DF-1 cells further verified the interaction of the two proteins. Through the overexpression of TXNL1 protein and knockdown of TXNL1 protein in DF-1 cells, the effects of NDV replication and cell apoptosis were examined. Cell apoptosis was detected by flow cytometry. The mRNA and protein expression levels of Bax, Bcl-2 and Caspase-3 were detected by quantitative real-time PCR (Q-PCR) and Western blotting. NDV expression was detected by Q-PCR and plaque assay. The results revealed that the TXNL1 protein induced apoptosis and inhibited NDV replication in DF-1 cells. Furthermore, the Western blot and Q-PCR results suggested that TXNL1 induced cell apoptosis through a pathway involving Bcl-2\Bax and Caspase-3. Finally, this work provides insight into the mechanism by which the V protein inhibits apoptosis.
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Affiliation(s)
- Caiying Wang
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Zhili Chu
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Wenkai Liu
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Yu Pang
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Xiaolong Gao
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Qiuxia Tang
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Jiangang Ma
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Kejia Lu
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Fathalrhman E. A. Adam
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
- Department of Preventive Medicine and Public Health, Faculty of Veterinary Science, University of Nyala, P.O Box: 155, Nyala, Sudan
| | - Ruyi Dang
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Sa Xiao
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Xinglong Wang
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
| | - Zengqi Yang
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi China
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7
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Chu Z, Wang C, Tang Q, Shi X, Gao X, Ma J, Lu K, Han Q, Jia Y, Wang X, Adam FEA, Liu H, Xiao S, Wang X, Yang Z. Newcastle Disease Virus V Protein Inhibits Cell Apoptosis and Promotes Viral Replication by Targeting CacyBP/SIP. Front Cell Infect Microbiol 2018; 8:304. [PMID: 30234028 PMCID: PMC6130229 DOI: 10.3389/fcimb.2018.00304] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 08/07/2018] [Indexed: 11/13/2022] Open
Abstract
Newcastle disease virus (NDV) has been classified by the World Organization for Animal Health (OIE) as a notable disease-causing virus, and this virus has the ability to infect a wide range of birds. V protein is a non-structural protein of NDV. V protein has been reported to inhibit cell apoptosis (Park et al., 2003a) and promote viral replication (Huang et al., 2003), however, the mechanisms of action of V protein have not been elucidated. In the present study, a yeast two-hybrid screen was performed, and V protein was found to interact with the CacyBP/SIP protein. The results of co-immunoprecipitation and immuno-colocalization assays confirmed the interaction between V protein and CacyBP/SIP. The results of quantitative-PCR and viral plaque assays showed that overexpression of CacyBP/SIP inhibited viral replication in DF-1 cells. Overexpression of CacyBP/SIP in DF-1 cells induced caspase3-dependent apoptosis. The effect of knocking down CacyBP/SIP by siRNA was the opposite of that observed upon overexpression. Moreover, it is known that NDV induces cell apoptosis via multiple caspase-dependent pathways. Furthermore, V protein inhibited cell apoptosis and downregulated CacyBP/SIP expression in DF-1 cells. Taken together, the findings of the current study indicate that V protein interacts with CacyBP/SIP, thereby regulating cell apoptosis and viral replication.
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Affiliation(s)
- Zhili Chu
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Caiying Wang
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Qiuxia Tang
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Xiaolei Shi
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Xiaolong Gao
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Jiangang Ma
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Kejia Lu
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Qingsong Han
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Yanqing Jia
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Xiangwei Wang
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Fathalrhman Eisa Addoma Adam
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China.,Department of Preventive Medicine and Public Health, Faculty of Veterinary Science, University of Nyala, Nyala, Sudan
| | - Haijin Liu
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Sa Xiao
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Xinglong Wang
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Zengqi Yang
- Department of Avian Disease, College of Veterinary Medicine, Northwest A&F University, Yangling, China
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8
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Zhang P, Ding Z, Liu X, Chen Y, Li J, Tao Z, Fei Y, Xue C, Qian J, Wang X, Li Q, Stoeger T, Chen J, Bi Y, Yin R. Enhanced Replication of Virulent Newcastle Disease Virus in Chicken Macrophages Is due to Polarized Activation of Cells by Inhibition of TLR7. Front Immunol 2018; 9:366. [PMID: 29670609 PMCID: PMC5893744 DOI: 10.3389/fimmu.2018.00366] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 02/09/2018] [Indexed: 12/14/2022] Open
Abstract
Newcastle disease (ND), caused by infections with virulent strains of Newcastle disease virus (NDV), is one of the most important infectious disease affecting wild, peridomestic, and domestic birds worldwide. Vaccines constructed from live, low-virulence (lentogenic) viruses are the most accepted prevention and control strategies for combating ND in poultry across the globe. Avian macrophages are one of the first cell lines of defense against microbial infection, responding to signals in the microenvironment. Although macrophages are considered to be one of the main target cells for NDV infection in vivo, very little is known about the ability of NDV to infect chicken macrophages, and virulence mechanisms of NDV as well as the polarized activation patterns of macrophages and correlation with viral infection and replication. In the present study, a cell culture model (chicken bone marrow macrophage cell line HD11) and three different virulence and genotypes of NDV (including class II virulent NA-1, class II lentogenic LaSota, and class I lentogenic F55) were used to solve the above underlying questions. Our data indicated that all three NDV strains had similar replication rates during the early stages of infection. Virulent NDV titers were shown to increase compared to the other lentogenic strains, and this growth was associated with a strong upregulation of both pro-inflammatory M1-like markers/cytokines and anti-inflammatory M2-like markers/cytokines in chicken macrophages. Virulent NDV was found to block toll-like receptor (TLR) 7 expression, inducing higher expression of type I interferons in chicken macrophages at the late stage of viral infection. Only virulent NDV replication can be inhibited by pretreatment with TLR7 ligand. Overall, this study demonstrated that virulent NDV activates a M1-/M2-like mixed polarized activation of chicken macrophages by inhibition of TLR7, resulting in enhanced replication compared to lentogenic viruses.
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Affiliation(s)
- Pingze Zhang
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zhuang Ding
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xinxin Liu
- College of Food Science and Engineering, Jilin University, Changchun, China
| | - Yanyu Chen
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Junjiao Li
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zhi Tao
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yidong Fei
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Cong Xue
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jing Qian
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xueli Wang
- College of Animal Science and Technology, Inner Mongolia University for Nationalities, Tongliao, China
| | - Qingmei Li
- Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Tobias Stoeger
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease (iLBD), Helmholtz Zentrum Muenchen, Munich, Germany
| | - Jianjun Chen
- CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Hubei, China
| | - Yuhai Bi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Renfu Yin
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
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9
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Xiang B, Zhu W, Li Y, Gao P, Liang J, Liu D, Ding C, Liao M, Kang Y, Ren T. Immune responses of mature chicken bone-marrow-derived dendritic cells infected with Newcastle disease virus strains with differing pathogenicity. Arch Virol 2018; 163:1407-1417. [PMID: 29397456 DOI: 10.1007/s00705-018-3745-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 01/09/2018] [Indexed: 12/13/2022]
Abstract
Infection of chickens with virulent Newcastle disease virus (NDV) is associated with severe pathology and increased morbidity and mortality. The innate immune response contributes to the pathogenicity of NDV. As professional antigen-presenting cells, dendritic cells (DCs) play a unique role in innate immunity. However, the contribution of DCs to NDV infection has not been investigated in chickens. In this study, we selected two representative NDV strains, i.e., the velogenic NDV strain Chicken/Guangdong/GM/2014 (GM) and the lentogenic NDV strain La Sota, to investigate whether NDVs could infect LPS-activated chicken bone-derived marrow DCs (mature chicken BM-DCs). We compared the viral titres and innate immune responses in mature chicken BM-DCs following infection with those strains. Both NDV strains could infect mature chicken BM-DC, but the GM strain showed stronger replication capacity than the La Sota strain in mature chicken BM-DCs. Gene expression profiling showed that MDA5, LGP2, TLR3, TLR7, IFN-α, IFN-β, IFN-γ, IL-1β, IL-6, IL-18, IL-8, CCL5, IL-10, IL-12, MHC-I, and MHC-II levels were altered in mature DCs after infection with NDVs at all evaluated times postinfection. Notably, the GM strain triggered stronger innate immune responses than the La Sota strain in chicken BM-DCs. However, both strains were able to suppress the expression of some cytokines, such as IL-6 and IFN-α, in mature chicken DCs at 24 hpi. These data provide a foundation for further investigation of the role of chicken DCs in NDV infection.
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Affiliation(s)
- Bin Xiang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China
| | - Wenxian Zhu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China
| | - Yaling Li
- College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang, People's Republic of China
| | - Pei Gao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China
| | - Jianpeng Liang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China
| | - Di Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China
| | - Chan Ding
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, People's Republic of China
| | - Ming Liao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China
| | - Yinfeng Kang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China.
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China.
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China.
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China.
- Department of Experimental Research, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China.
| | - Tao Ren
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, People's Republic of China.
- National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, Guangzhou, People's Republic of China.
- Key Laboratory of Animal Vaccine Development, Ministry of Agriculture, Guangzhou, People's Republic of China.
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, Guangzhou, People's Republic of China.
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Kaiser A, Willer T, Sid H, Petersen H, Baumgärtner W, Steinberg P, Rautenschlein S. Susceptibility of primary chicken intestinal epithelial cells for low pathogenic avian influenza virus and velogenic viscerotropic Newcastle disease virus. Virus Res 2016; 225:50-63. [DOI: 10.1016/j.virusres.2016.09.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 07/01/2016] [Accepted: 09/02/2016] [Indexed: 11/25/2022]
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11
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Zhang WX, Zuo EW, He Y, Chen DY, Long X, Chen MJ, Li TT, Yang XG, Xu HY, Lu SS, Zhang M, Lu KH, Lu YQ. Promoter structures and differential responses to viral and non-viral inducers of chicken melanoma differentiation-associated gene 5. Mol Immunol 2016; 76:1-6. [PMID: 27327127 PMCID: PMC7127162 DOI: 10.1016/j.molimm.2016.06.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 05/28/2016] [Accepted: 06/07/2016] [Indexed: 01/12/2023]
Abstract
A 2.5 kb chicken MDA5 promoter fragment was cloned and characterized (Accession number KT335979). The activity of the promoter is extremely low under basal conditions. Viral (IBDV) and non-viral (IFN-β or poly (I:C) inducers could activate the promoter. Gene expression driven by exogenous MDA5 promoter is in accordance with endogenous MDA5.
Melanoma differentiation-associated gene 5 (MDA5) is a member of the retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs) family and plays a pivotal role in the anti-viral innate immune response. As RIG-I is absent in chickens, MDA5 is hypothesized to be important in detecting viral nucleic acids in the cytoplasm. However, the molecular mechanism of the regulation of chicken MDA5 (chMDA5) expression has yet to be fully elucidated. With this in mind, a ∼2.5 kb chMDA5 gene promoter region was examined and PCR amplified to assess its role in immune response. A chMDA5 promoter reporter plasmid (piggybac-MDA5-DsRed) was constructed and transfected into DF-1 cells to establish a Piggybac-MDA5-DsRed cell line. The MDA5 promoter activity was extremely low under basal condition, but was dramatically increased when cells were stimulated with polyinosinic: polycytidylic acid (poly I:C), interferon beta (IFN-β) or Infectious Bursal Disease Virus (IBDV). The DsRed mRNA level represented the promoter activity and was remarkably increased, which matched the expression of endogenous MDA5. However, Infectious Bronchitis Virus (IBV) and Newcastle disease virus (NDV) failed to increase the MDA5 promoter activity and the expression of endogenous MDA5. The results indicated that the promoter and the Piggybac-MDA5-DsRed cell line could be utilized to determine whether a ligand regulates MDA5 expression. For the first time, this study provides a tool for testing chMDA5 expression and regulation.
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Affiliation(s)
- Wen-Xin Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Er-Wei Zuo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Ying He
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, China
- College of Animal Science and Technology, Guangxi University, Nanning, Guangxi, China
| | - Dong-Yang Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Xie Long
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Mei-Juan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Ting-Ting Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Xiao-Gan Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Hui-Yan Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Sheng-Sheng Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Ming Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
| | - Ke-Huan Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
- Corresponding authors.
| | - Yang-Qing Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi High Education Laboratory for Animal Reproduction and Biotechnology, Guangxi University, Nanning, Guangxi, China
- Corresponding authors.
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12
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Qiu X, Fu Q, Meng C, Yu S, Zhan Y, Dong L, Song C, Sun Y, Tan L, Hu S, Wang X, Liu X, Peng D, Liu X, Ding C. Newcastle Disease Virus V Protein Targets Phosphorylated STAT1 to Block IFN-I Signaling. PLoS One 2016; 11:e0148560. [PMID: 26859759 PMCID: PMC4747598 DOI: 10.1371/journal.pone.0148560] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Accepted: 01/19/2016] [Indexed: 11/29/2022] Open
Abstract
Newcastle disease virus (NDV) V protein is considered as an effector for IFN antagonism, however, the mechanism remains unknown. In this study, the expression of STAT1 and phospho-STAT1 in cells infected with NDV or transfected with V protein-expressing plasmids were analyzed. Our results showed that NDV V protein targets phospho-STAT1 reduction in the cells depends on the stimulation of IFN-α. In addition, a V-deficient genotype VII recombinant NDV strain rZJ1-VS was constructed using reverse genetic technique to confirm the results. The rZJ1-VS lost the ability to reduce phospho-STAT1 and induced higher expression of IFN-responsive genes in infected cells. Furthermore, treatment with an ubiquitin E1 inhibitor PYR-41 demonstrated that phospho-STAT1 reduction was caused by degradation, but not de-phosphorylation. We conclude that NDV V protein targets phospho-STAT1 degradation to block IFN-α signaling, which adds novel knowledge to the strategies used by paramyxoviruses to evade IFN.
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Affiliation(s)
- Xusheng Qiu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Qiang Fu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
- Key Laboratory of Animal Infectious Diseases, Yangzhou University, Yangzhou, Jiangsu, China
| | - Chunchun Meng
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Shengqing Yu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Yuan Zhan
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Luna Dong
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Cuiping Song
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Yingjie Sun
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Lei Tan
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
| | - Shunlin Hu
- Key Laboratory of Animal Infectious Diseases, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiaoquan Wang
- Key Laboratory of Animal Infectious Diseases, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiaowen Liu
- Key Laboratory of Animal Infectious Diseases, Yangzhou University, Yangzhou, Jiangsu, China
| | - Daxin Peng
- Key Laboratory of Animal Infectious Diseases, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Xiufan Liu
- Key Laboratory of Animal Infectious Diseases, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- * E-mail: (XFL); (CD)
| | - Chan Ding
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Minhang, Shanghai, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- * E-mail: (XFL); (CD)
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13
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Ghosh S, Kumar SRP, Puri IK, Elankumaran S. Magnetic assembly of 3D cell clusters: visualizing the formation of an engineered tissue. Cell Prolif 2016; 49:134-44. [PMID: 26839975 DOI: 10.1111/cpr.12234] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 09/12/2015] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVES Contactless magnetic assembly of cells into 3D clusters has been proposed as a novel means for 3D tissue culture that eliminates the need for artificial scaffolds. However, thus far its efficacy has only been studied by comparing expression levels of generic proteins. Here, it has been evaluated by visualizing the evolution of cell clusters assembled by magnetic forces, to examine their resemblance to in vivo tissues. MATERIALS AND METHODS Cells were labeled with magnetic nanoparticles, then assembled into 3D clusters using magnetic force. Scanning electron microscopy was used to image intercellular interactions and morphological features of the clusters. RESULTS When cells were held together by magnetic forces for a single day, they formed intercellular contacts through extracellular fibers. These kept the clusters intact once the magnetic forces were removed, thus serving the primary function of scaffolds. The cells self-organized into constructs consistent with the corresponding tissues in vivo. Epithelial cells formed sheets while fibroblasts formed spheroids and exhibited position-dependent morphological heterogeneity. Cells on the periphery of a cluster were flattened while those within were spheroidal, a well-known characteristic of connective tissues in vivo. CONCLUSIONS Cells assembled by magnetic forces presented visual features representative of their in vivo states but largely absent in monolayers. This established the efficacy of contactless assembly as a means to fabricate in vitro tissue models.
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Affiliation(s)
- S Ghosh
- Department of Engineering Physics, McMaster University, Hamilton, ON, Canada
| | - S R P Kumar
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, USA
| | - I K Puri
- Department of Engineering Physics, McMaster University, Hamilton, ON, Canada.,Department of Mechanical Engineering, McMaster University, Hamilton, ON, Canada
| | - S Elankumaran
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, USA
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14
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Hao H, Chen S, Liu P, Ren S, Gao X, Wang Y, Wang X, Zhang S, Yang Z. Genetic variation in V gene of class II Newcastle disease virus. INFECTION GENETICS AND EVOLUTION 2016; 37:14-20. [DOI: 10.1016/j.meegid.2015.10.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 10/18/2015] [Accepted: 10/21/2015] [Indexed: 11/29/2022]
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15
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Zhang S, Sun Y, Chen H, Dai Y, Zhan Y, Yu S, Qiu X, Tan L, Song C, Ding C. Activation of the PKR/eIF2α signaling cascade inhibits replication of Newcastle disease virus. Virol J 2014; 11:62. [PMID: 24684861 PMCID: PMC3994276 DOI: 10.1186/1743-422x-11-62] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 03/27/2014] [Indexed: 12/15/2022] Open
Abstract
Background Newcastle Disease virus (NDV) causes severe and economically significant disease in almost all birds. However, factors that affect NDV replication in host cells are poorly understood. NDV generates long double-stranded RNA (dsRNA) molecules during transcription of single-stranded genomic RNA. Protein kinase R (PKR) is activated by dsRNA. The aim of this study was to elucidate the role of PKR in NDV infection. Results NDV infection led to the activation of dsRNA-dependent PKR and phosphorylation of its substrate, translation initiation factor eIF2α, in a dose-dependent manner by either the lentogenic strain LaSota or a velogenic strain Herts/33. PKR activation coincided with the accumulation of dsRNA induced by NDV infection. PKR knockdown remarkably decreased eIF2α phosphorylation as well as IFN-β mRNA levels, leading to the augmentation of extracellular virus titer. Furthermore, siRNA knockdown or phosphorylation of eIF2α or okadaic acid treatment significantly impaired NDV replication, indicating the critical role of the PKR/eIF2α signaling cascade in NDV infection. Conclusion PKR is activated by dsRNA generated by NDV infection and inhibits NDV replication by eIF2α phosphorylation. This study provides insight into NDV-host interactions for the development of candidate antiviral strategies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Chan Ding
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No,518 Ziyue Road, Shanghai 200241, China.
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16
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Cao HW, Li DS, Zhang H. Analysis of synonymous codon usage in Newcastle disease virus hemagglutinin-neuraminidase (HN) gene and fusion protein (F) gene. Virusdisease 2013; 25:132-6. [PMID: 24426322 DOI: 10.1007/s13337-013-0175-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 10/29/2013] [Indexed: 10/26/2022] Open
Abstract
Newcastle disease virus (NDV) hemagglutinin-neuraminidase (HN) is a multifunctional protein, which possesses both the receptor recognition and neuraminidase activities. The fusion (F) protein is a type I membrane glycoprotein that mediates the merger of the viral envelope to the host cell membrane. Although the functions of the HN and F proteins have been well studied, however, the factors shaping synonymous codon usage bias and nucleotide composition in HN and F genes have been few reported. In our study, we analyzed synonymous codon usage using the 69 NDV HN and F genes, respectively. The general correlation between base composition and codon usage bias suggests that mutational pressure rather than natural selection is the main factor that determines the codon usage bias in HN and F genes. In addition, other factors, such as the aromaticity and hydrophobicity, also influence the codon usage variation among HN and F genes. This study represents the most comprehensive analysis to date of NDV HN and F genes codon usage patterns and provides a basic understanding of the mechanisms for codon usage bias.
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Affiliation(s)
- Hong-Wei Cao
- College of Biological Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319 China ; College of Life Science, Northeast Agricultural University, Harbin, 150030 China
| | - De-Shan Li
- College of Life Science, Northeast Agricultural University, Harbin, 150030 China
| | - Hua Zhang
- College of Biological Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
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17
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Kumar R, Kirubaharan JJ, Chandran NDJ, Gnanapriya N. Transcriptional response of chicken embryo cells to Newcastle disease virus (D58 strain) infection. INDIAN JOURNAL OF VIROLOGY : AN OFFICIAL ORGAN OF INDIAN VIROLOGICAL SOCIETY 2013; 24:278-83. [PMID: 24426287 DOI: 10.1007/s13337-013-0148-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 07/22/2013] [Indexed: 11/28/2022]
Abstract
Newcastle disease virus (NDV), the causative agent of Newcastle disease (ND) in chicken causes significant economic loss for the poultry industry worldwide. The mechanism involved in host response to NDV infection is not well understood. For better understanding of the virus-host interaction; transcriptional profile of some genes of chicken embryo (CE) cells infected with NDV vaccine strain D58 was established using quantitative RT-PCR SYBR Green method. The relative standard curve method was used to measure the level of transcripts of the cellular genes against an endogenous control (β actin) gene. Among the genes studied, IFN α, IFN γ, MHC I and DDX 1 were up-regulated while IL 6 was down regulated. The expression of viral genes (M and F) in the infected CE cells was also confirmed by relative quantification. The host cellular genes involved in pro-inflammatory response, interferon-regulated proteins and the cellular immune response were affected by NDV infection, indicating involvement of complex signaling pathways of host cell responses to the infection. Thus, this study contributes to the understanding of the pathogenesis of ND and provides an insight into the virus-host interaction.
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Affiliation(s)
- Ramesh Kumar
- Department of Veterinary Microbiology, Madras Veterinary College, Chennai, 600 007 India
| | - J John Kirubaharan
- Department of Veterinary Microbiology, Madras Veterinary College, Chennai, 600 007 India
| | - N Daniel Joy Chandran
- Department of Veterinary Microbiology, Madras Veterinary College, Chennai, 600 007 India
| | - N Gnanapriya
- Department of Veterinary Microbiology, Madras Veterinary College, Chennai, 600 007 India
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Yue H, Lei XW, Yang FL, Li MY, Tang C. Reference gene selection for normalization of PCR analysis in chicken embryo fibroblast infected with H5N1 AIV. Virol Sin 2010; 25:425-31. [PMID: 21221921 PMCID: PMC7090763 DOI: 10.1007/s12250-010-3114-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2009] [Accepted: 07/28/2010] [Indexed: 12/01/2022] Open
Abstract
Chicken embryo fibroblasts (CEFs) are among the most commonly used cells for the study of interactions between chicken hosts and H5N1 avian influenza virus (AIV). In this study, the expression of eleven housekeeping genes typically used for the normalization of quantitative real-time PCR (QPCR) analysis in mammals were compared in CEFs infected with H5N1 AIV to determine the most reliable reference genes in this system. CEFs cultured from 10-day-old SPF chicken embryos were infected with 100 TCID(50) of H5N1 AIV and harvested at 3, 12, 24 and 30 hours post-infection. The expression levels of the eleven reference genes in infected and uninfected CEFs were determined by real-time PCR. Based on expression stability and expression levels, our data suggest that the ribosomal protein L4 (RPL4) and tyrosine 3-monooxygenase tryptophan 5-monooxygenase activation protein zeta polypeptide (YWHAZ) are the best reference genes to use in the study of host cell response to H5N1 AIV infection. However, for the study of replication levels of H5N1 AIV in CEFs, the β-actin gene (ACTB) and the ribosomal protein L4 (RPL4) gene are the best references.
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Affiliation(s)
- Hua Yue
- College of Life Science and Technology, Southwest University for Nationalities, Chengdu 610041, China
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