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Song G, Zhang Y, Gao H, Fu Y, Chen Y, Yin Y, Xu K. Differences in Immune Characteristics and Related Gene Expression in Spleen among Ningxiang, Berkshire Breeds and Their Hybrid Pigs. Genes (Basel) 2024; 15:205. [PMID: 38397195 PMCID: PMC10888219 DOI: 10.3390/genes15020205] [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: 12/25/2023] [Revised: 01/29/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
To investigate the differential immunology in Ningxiang and Berkshire pigs and their F1 offspring (F1 offspring), physiological and biochemical indicators in the plasma and spleen were analyzed. Then, transcriptomic analysis of the spleen identified 1348, 408, and 207 differentially expressed genes (DEGs) in comparisons of Ningxiang vs. Berkshire, Berkshire vs. F1 offspring, and Ningxiang vs. F1 offspring, respectively. In Ningxiang vs. Berkshire pigs, the gene ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis indicated that the DEGs included CD163, MARCO, CXCL14, CCL19, and PPBP, which are associated with immunity. GO and KEGG analyses were also conducted comparing F1 offspring and their parents. The DEGs, including BPIFB1, HAVCR2, CD163, DDX3X, CCR5, and ITGB3, were enriched in immune-related pathways. Protein-protein interaction (PPI) analysis indicated that the EGFR and ITGA2 genes were key hub genes. In conclusion, this study identifies significant immune DEGs in different pig breeds, providing data to support the exploration of breeding strategies for disease resistance in local and crossbred pig populations.
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Affiliation(s)
- Gang Song
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (G.S.); (Y.Z.); (H.G.); (Y.F.)
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Yuebo Zhang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (G.S.); (Y.Z.); (H.G.); (Y.F.)
| | - Hu Gao
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (G.S.); (Y.Z.); (H.G.); (Y.F.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China;
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Yawei Fu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China; (G.S.); (Y.Z.); (H.G.); (Y.F.)
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China;
- Hunan Provincial Key Laboratory of the Traditional Chinese Medicine Agricultural Biogenomics, Changsha Medical University, Changsha 410219, China
| | - Yue Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China;
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- Hunan Provincial Key Laboratory of the Traditional Chinese Medicine Agricultural Biogenomics, Changsha Medical University, Changsha 410219, China
| | - Yulong Yin
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China;
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Kang Xu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China;
- Key Laboratory of Agroecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
- Hunan Provincial Key Laboratory of the Traditional Chinese Medicine Agricultural Biogenomics, Changsha Medical University, Changsha 410219, China
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2
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Lv H, Peng Z, Jia B, Jing H, Cao S, Xu Z, Dong W. Transcriptome analysis of PK-15 cells expressing CSFV NS4A. BMC Vet Res 2022; 18:434. [PMID: 36503524 PMCID: PMC9742017 DOI: 10.1186/s12917-022-03533-9] [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: 07/31/2022] [Accepted: 11/29/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Classical swine fever (CSF) is a severe disease of pigs that results in huge economic losses worldwide and is caused by classical swine fever virus (CSFV). CSFV nonstructural protein 4 A (NS4A) plays a crucial role in infectious CSFV particle formation. However, the function of NS4A during CSFV infection is not well understood. RESULTS: In this study, we used RNA-seq to investigate the functional role of CSFV NS4A in PK-15 cells. A total of 3893 differentially expressed genes (DEGs) were identified in PK-15 cells expressing NS4A compared to cells expressing the empty vector (NC). Twelve DEGs were selected and further verified by RT‒qPCR. GO and KEGG enrichment analyses revealed that these DEGs were associated with multiple biological functions, including cell adhesion, apoptosis, host defence response, the inflammatory response, the immune response, and autophagy. Interestingly, some genes associated with host immune defence and inflammatory response were downregulated, and some genes associated with host apoptosis and autophagy were upregulated. CONCLUSION CSFV NS4A inhibits the innate immune response, and suppresses the expression of important genes associated with defence response to viruses and inflammatory response, and regulates cell adhesion, apoptosis and autophagy.
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Affiliation(s)
- Huifang Lv
- grid.256922.80000 0000 9139 560XKey Laboratory of Veterinary Biological Products, College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, 450046 Zhengzhou, China
| | - Zhifeng Peng
- grid.256922.80000 0000 9139 560XKey Laboratory of Veterinary Biological Products, College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, 450046 Zhengzhou, China
| | - Bingxin Jia
- grid.256922.80000 0000 9139 560XKey Laboratory of Veterinary Biological Products, College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, 450046 Zhengzhou, China
| | - Huiyuan Jing
- grid.256922.80000 0000 9139 560XKey Laboratory of Veterinary Biological Products, College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, 450046 Zhengzhou, China
| | - Sufang Cao
- grid.256922.80000 0000 9139 560XKey Laboratory of Veterinary Biological Products, College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, 450046 Zhengzhou, China
| | - Zhikun Xu
- grid.256922.80000 0000 9139 560XKey Laboratory of Veterinary Biological Products, College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, 450046 Zhengzhou, China
| | - Wang Dong
- grid.256922.80000 0000 9139 560XKey Laboratory of Veterinary Biological Products, College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, 450046 Zhengzhou, China
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3
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Li B, Yang J, He J, Peng X, Zeng Q, Song Y, Xu K, Ma H. Characterization of the whole transcriptome of spleens from Chinese indigenous breed Ningxiang pig reveals diverse coding and non-coding RNAs for immunity regulation. Genomics 2021; 113:2468-2482. [PMID: 34062231 DOI: 10.1016/j.ygeno.2021.05.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
The spatio-temporal expression patterns of RNA and comparisons between different developmental stages have been one of the useful techniques for studying animal physiology and functional gene regulations. A Chinese indigenous breed Ningxiang pig is known for its quality meat production, disease resistance and slow growth performances in pig industry. To gain a better understanding of pig immunity and disease resistance, we comprehensively analyzed the whole transcriptome of the spleens from three important developmental nodes of Ningxiang pig at 30, 90 and 210 days of age. By three ways of comparisons (30vs 90 days, 30 vs 210 days and 90 vs 210 days), a total of 364to 865 differentially expressed mRNAs, 37 to 98 differentially expressed miRNAs,220 to 278 lncRNAs, and 96 to 113 circRNAs were identified. Further analysis of expression patterns, potential function and interactions with miRNAs identified the potential non-coding RNAs related to immunomodulation such as ssc-miRNA-150, ssc-miRNA-497, MSTRG24160, MSTRG18646. The results revealed that miRNAs and circRNAs may have evolved to regulate a large set of biological processes of spleen function in Ningxiang pigs, and circRNAs play a role of miRNA sponges. The results from study is the first report of whole transcriptome analysis of Ningxiang pig spleen and provide new insights into the expression changes of RNAs during the spleen development, which contribute to the phenotypic formation of immunity and disease resistancesin Chinese indigenous pig breeds.
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Affiliation(s)
- Biao Li
- College of Animal Sciences, Hunan Agricultural University, Changsha, Hunan, China
| | - Jinzeng Yang
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, HI, USA(.)
| | - Jun He
- College of Animal Sciences, Hunan Agricultural University, Changsha, Hunan, China.
| | - Xing Peng
- College of Animal Sciences, Hunan Agricultural University, Changsha, Hunan, China
| | - Qinghua Zeng
- College of Animal Sciences, Hunan Agricultural University, Changsha, Hunan, China; Ningxiang pig farm of Dalong Livestock Technology Co. Ltd., Ningxiang, Hunan 410600, China
| | - Yukun Song
- College of Animal Sciences, Hunan Agricultural University, Changsha, Hunan, China
| | - Kang Xu
- Laboratory of Animal Nutritional Physiology and Metabolic Process of the State Key Laboratory of Agro ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Haiming Ma
- College of Animal Sciences, Hunan Agricultural University, Changsha, Hunan, China
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4
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Kulus M, Kranc W, Wojtanowicz-Markiewicz K, Celichowski P, Światły-Błaszkiewicz A, Matuszewska E, Sujka-Kordowska P, Konwerska A, Zdun M, Bryl R, Wieczorkiewicz M, Kulus J, Stelmach B, Stefańska K, Budna-Tukan J, Petitte JN, Mozdziak P, Ratajczak K, Matysiak J, Jaśkowski JM, Nowicki M, Kempisty B. New Gene Markers Expressed in Porcine Oviductal Epithelial Cells Cultured Primary In Vitro Are Involved in Ontological Groups Representing Physiological Processes of Porcine Oocytes. Int J Mol Sci 2021; 22:ijms22042082. [PMID: 33669854 PMCID: PMC7923230 DOI: 10.3390/ijms22042082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/11/2021] [Accepted: 02/16/2021] [Indexed: 12/11/2022] Open
Abstract
Changes that occur within oviducts after fertilization are dependent on post-ovulation events, including oocyte-oviduct interactions. Although general processes are well-defined, the molecular basis are poorly understood. Recently, new marker genes involved in ‘cell development’, ‘cell growth’, ‘cell differentiation’ and ‘cell maturation’ processes have been identified in porcine oocytes. The aim of the study was to assess the expression profile of genes in primary in vitro cultured oviductal epithelial cells (OECs), clustered in Gene Ontology groups which enveloped markers also identified in porcine oocytes. OECs (from 45 gilts) were surgically removed and cultured in vitro for ≤ 30 days, and then subjected to molecular analyses. The transcriptomic and proteomic profiles of cells cultured during 7, 15 and 30 days were investigated. Additionally, morphological/histochemical analyzes were performed. The results of genes expression profiles were validated after using RT-qPCR. The results showed a significant upregulation of UNC45B, NOX4, VLDLR, ITGB3, FMOD, SGCE, COL1A2, LOX, LIPG, THY1 and downregulation of SERPINB2, CD274, TXNIP, CELA1, DDX60, CRABP2, SLC5A1, IDO1, ANPEP, FST. Detailed knowledge of the molecular pathways occurring in the OECs and the gametes that contact them may contribute both to developments of basic science of physiology, and new possibilities in advanced biotechnology of assisted reproduction.
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Affiliation(s)
- Magdalena Kulus
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (M.K.); (K.W.-M.); (K.R.)
| | - Wiesława Kranc
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (W.K.); (R.B.)
| | - Katarzyna Wojtanowicz-Markiewicz
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (M.K.); (K.W.-M.); (K.R.)
| | - Piotr Celichowski
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (P.C.); (P.S.-K.); (A.K.); (K.S.); (J.B.-T.); (M.N.)
| | - Agata Światły-Błaszkiewicz
- Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, 60-780 Poznan, Poland; (A.Ś.-B.); (E.M.); (J.M.)
| | - Eliza Matuszewska
- Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, 60-780 Poznan, Poland; (A.Ś.-B.); (E.M.); (J.M.)
| | - Patrycja Sujka-Kordowska
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (P.C.); (P.S.-K.); (A.K.); (K.S.); (J.B.-T.); (M.N.)
- Department of Anatomy and Histology, University of Zielona Gora, 65-046 Zielona Gora, Poland
| | - Aneta Konwerska
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (P.C.); (P.S.-K.); (A.K.); (K.S.); (J.B.-T.); (M.N.)
| | - Maciej Zdun
- Department of Basic and Preclinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (M.Z.); (M.W.)
| | - Rut Bryl
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (W.K.); (R.B.)
| | - Maria Wieczorkiewicz
- Department of Basic and Preclinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (M.Z.); (M.W.)
| | - Jakub Kulus
- Department of Diagnostics and Clinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (J.K.); (J.M.J.)
| | - Bogusława Stelmach
- Division of Infertility and Reproductive Endocrinology, Department of Gynecology, Obstetrics and Gynecological Oncology, Poznan University of Medical Sciences, 60-535 Poznan, Poland;
| | - Katarzyna Stefańska
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (P.C.); (P.S.-K.); (A.K.); (K.S.); (J.B.-T.); (M.N.)
| | - Joanna Budna-Tukan
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (P.C.); (P.S.-K.); (A.K.); (K.S.); (J.B.-T.); (M.N.)
| | - James N. Petitte
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (J.N.P.); (P.M.)
| | - Paul Mozdziak
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (J.N.P.); (P.M.)
| | - Kornel Ratajczak
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (M.K.); (K.W.-M.); (K.R.)
| | - Jan Matysiak
- Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, 60-780 Poznan, Poland; (A.Ś.-B.); (E.M.); (J.M.)
| | - Jędrzej M. Jaśkowski
- Department of Diagnostics and Clinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (J.K.); (J.M.J.)
| | - Michał Nowicki
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (P.C.); (P.S.-K.); (A.K.); (K.S.); (J.B.-T.); (M.N.)
| | - Bartosz Kempisty
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (M.K.); (K.W.-M.); (K.R.)
- Department of Anatomy, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (W.K.); (R.B.)
- Department of Histology and Embryology, Poznan University of Medical Sciences, 60-781 Poznan, Poland; (P.C.); (P.S.-K.); (A.K.); (K.S.); (J.B.-T.); (M.N.)
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA; (J.N.P.); (P.M.)
- Correspondence:
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5
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Ganges L, Crooke HR, Bohórquez JA, Postel A, Sakoda Y, Becher P, Ruggli N. Classical swine fever virus: the past, present and future. Virus Res 2020; 289:198151. [PMID: 32898613 DOI: 10.1016/j.virusres.2020.198151] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/24/2020] [Accepted: 08/28/2020] [Indexed: 12/22/2022]
Abstract
Classical swine fever (CSF) is among the most relevant viral epizootic diseases of swine. Due to its severe economic impact, CSF is notifiable to the world organisation for animal health. Strict control policies, including systematic stamping out of infected herds with and without vaccination, have permitted regional virus eradication. Nevertheless, CSF virus (CSFV) persists in certain areas of the world and has re-emerged regularly. This review summarizes the basic established knowledge in the field and provides a comprehensive and updated overview of the recent advances in fundamental CSFV research, diagnostics and vaccine development. It covers the latest discoveries on the genetic diversity of pestiviruses, with implications for taxonomy, the progress in understanding disease pathogenesis, immunity against acute and persistent infections, and the recent findings in virus-host interactions and virulence determinants. We also review the progress and pitfalls in the improvement of diagnostic tools and the challenges in the development of modern and efficacious marker vaccines compatible with serological tests for disease surveillance. Finally, we highlight the gaps that require research efforts in the future.
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Affiliation(s)
- Llilianne Ganges
- OIE Reference Laboratory for Classical Swine Fever, Institute of Agrifood Research and Technology, Centre de Recerca en Sanitat Animal (CReSA), 08193 Barcelona, Spain.
| | - Helen R Crooke
- Virology Department, Animal and Plant Health Agency, APHA-Weybridge, Woodham Lane, New Haw, Addlestone, KT15 3NB, UK
| | - Jose Alejandro Bohórquez
- OIE Reference Laboratory for Classical Swine Fever, Institute of Agrifood Research and Technology, Centre de Recerca en Sanitat Animal (CReSA), 08193 Barcelona, Spain
| | - Alexander Postel
- EU & OIE Reference Laboratory for Classical Swine Fever, Institute of Virology, University of Veterinary Medicine, Hannover, Buenteweg 17, 30559 Hannover, Germany
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, 060-0818, Japan
| | - Paul Becher
- EU & OIE Reference Laboratory for Classical Swine Fever, Institute of Virology, University of Veterinary Medicine, Hannover, Buenteweg 17, 30559 Hannover, Germany
| | - Nicolas Ruggli
- The Institute of Virology and Immunology IVI, Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, University of Bern, Bern, Switzerland
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6
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Yang C, Lan R, Wang X, Zhao Q, Li X, Bi J, Wang J, Yang G, Lin Y, Liu J, Yin G. Integrin β3, a RACK1 interacting protein, is critical for porcine reproductive and respiratory syndrome virus infection and NF-κB activation in Marc-145 cells. Virus Res 2020; 282:197956. [PMID: 32247758 DOI: 10.1016/j.virusres.2020.197956] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 01/20/2023]
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is the pathogen of porcine reproductive and respiratory syndrome (PRRS), which is one of the most economically harmful diseases in modern pig production worldwide. Receptor of activated protein C kinase 1 (RACK1) was previously shown to be indispensable for the PRRSV replication and NF-κB activation in Marc-145 cells. Here we identified a membrane protein, integrin β3 (ITGB3), as a RACK1-interacting protein. PRRSV infection in Marc-145 cells upregulated the ITGB3 expression. Abrogation of ITGB3 by siRNA knockdown or antibody blocking inhibited PRRSV infection and NF-κB activation, while on the other hand, overexpression of ITGB3 enhanced PRRSV infection and NF-κB activation. Furthermore, inhibition of ITGB3 alleviated the cytopathic effects and reduced the TCID50 titer in Marc-145 cells. We also showed that RACK1 and ITGB3 were NF-κB target genes during PRRSV infection, and that they regulated each other. Our data indicated that ITGB3, presumably as a co-receptor, played an imperative role during PRRSV infection and NF-κB activation in Marc-145 cells. PRRSV infection activates a positive feedback loop involving the activation of NF-κB and upregulation of ITGB3 and RACK1 in Marc-145 cells. The findings would advance our elaborated understanding of the molecular host-pathogen interaction mechanisms underlying PRRSV infection in swine and suggest ITGB3 and NF-κB signaling pathway as potential therapeutic targets for PRRS control.
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Affiliation(s)
- Chao Yang
- College of Animal Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Rui Lan
- College of Animal Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Xiaochun Wang
- College of Animal Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Qian Zhao
- College of Animal Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, Yunnan, China; Center for Animal Disease Control and Prevention, Chuxiong City, 675000, Yunnan, China
| | - Xidan Li
- Karolinska Institute, Integrated Cardio Metabolic Centre (ICMC), Stockholm, SE-14157, Sweden
| | - Junlong Bi
- College of Animal Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, Yunnan, China; Center for Animal Disease Control and Prevention, Chuxiong City, 675000, Yunnan, China
| | - Jing Wang
- School of Clinical Medicine, Dali University, Dali, 671003, Yunnan, China
| | - Guishu Yang
- College of Animal Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
| | - Yingbo Lin
- Department of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden
| | - Jianping Liu
- School of Clinical Medicine, Dali University, Dali, 671003, Yunnan, China.
| | - Gefen Yin
- College of Animal Veterinary Medicine, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
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7
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Kulus M, Kranc W, Sujka-Kordowska P, Mozdziak P, Jankowski M, Konwerska A, Kulus J, Bukowska D, Skowroński M, Piotrowska-Kempisty H, Nowicki M, Kempisty B, Antosik P. The processes of cellular growth, aging, and programmed cell death are involved in lifespan of ovarian granulosa cells during short-term IVC - Study based on animal model. Theriogenology 2020; 148:76-88. [PMID: 32160576 DOI: 10.1016/j.theriogenology.2020.02.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/10/2020] [Accepted: 02/29/2020] [Indexed: 02/07/2023]
Abstract
The oogenesis and folliculogenesis are closely linked and occur simultaneously in the growing ovarian follicles. Biochemical and morphological changes in oocytes (OC) and surrounding granulosa cells (GCs) are highly complex and depend on many factors, including intercellular communication. GCs are cells with many functions, often crucial for the proper viability of the oocyte and subsequent positive fertilization. The purpose of this study was to analyze gene expression in porcine GCs, to define differentially expressed genes belongs to the "cell growth", "aging", "positive regulation of cell death", "apoptotic process", "regulation of cell death", "cell death" and "negative regulation of cell death" ontology groups during the short - term primary in vitro culture. Microarrays were employed to study the transcriptome contained in the total RNA of the cultured GCs. Ovaries were obtained after slaughter, from 40 gilts of swine aged 170 days. The cells were obtained through puncture of the ovaries, collection of follicular fluid, removal of the cumulus - oocyte complexes and centrifugation. The cells were then cultured in vitro. The RNA material was obtained before the culture was established (0h) and then after 48h, 96h and 144h of its course. From 182 differently expressed genes belonging to the these ontology groups, we have selected POSTN, FN1, FMOD, ITGB3, DCN, SERPINB2, SFRP2, IGFBP5, EMP1, and CCL2 which were upregulated, as well as DAPL1, ESR1, IHH, TGFBR3, PPARD, PDK4, TXNIP, IFIT3, CSRNP3, and TNFSF10 genes whose expression was downregulated during the time of in vitro culture of the GCs. The significance of the differential gene expression is to provide new information on the molecular aspects of in vitro granulosa cell culture.
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Affiliation(s)
- Magdalena Kulus
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Wiesława Kranc
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Paul Mozdziak
- Physiology Graduate Program, North Carolina State University, Raleigh, NC, USA
| | - Maurycy Jankowski
- Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland
| | - Aneta Konwerska
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - Jakub Kulus
- Department of Diagnostics and Clinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Dorota Bukowska
- Department of Diagnostics and Clinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Mariusz Skowroński
- Department of Basic and Preclinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun, Poland
| | | | - Michał Nowicki
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland
| | - Bartosz Kempisty
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun, Poland; Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland; Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland; Department of Obstetrics and Gynecology, University Hospital and Masaryk University, Brno, Czech Republic.
| | - Paweł Antosik
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun, Poland
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8
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The effect of classical swine fever virus NS5A and NS5A mutants on oxidative stress and inflammatory response in swine testicular cells. Res Vet Sci 2017; 112:89-96. [PMID: 28142057 DOI: 10.1016/j.rvsc.2017.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 01/06/2017] [Accepted: 01/12/2017] [Indexed: 12/22/2022]
Abstract
Infection with classical swine fever virus (CSFV) results in highly significant economic losses; this infection is characterized by being highly contagious and accompanied by hyperthermia and systemic bleeding. Oxidative stress (OS) plays a critical role in the pathological process of viral infection. The function of the nonstructural protein 5A (NS5A) in the pathogenesis of CSFV has not been completely understood. Here, OS and the inflammatory response were studied with NS5A and substitution mutants in swine testicular (ST) cells. ST cell lines stably expressing CSFV NS5A or substitution mutants were established. Reactive oxygen species (ROS) production, antioxidant protein expression and inflammatory response were analyzed by quantitative real-time PCR (qRT-PCR), ELISA and flow cytometry analysis. The results showed that CSFV NS5A did not increase ROS production or the antioxidant protein (Trx, HO-1 and PRDX-6) expression in ST cells. However, NS5A inhibited cyclooxygenase-2 (COX-2) expression, a pro-inflammatory protein related to OS. Further studies have shown that NS5A mutants S15A and S92A increased ROS production and inhibited antioxidant protein expression. S15A, S81A and T274A affected the inflammatory response. This study suggested that CSFV NS5A did not induce OS, and amino acids Ser15 and Ser92 of CSFV NS5A were essential for inhibiting OS. Additionally, Ser15, Ser81 and Thr274 played important roles in the inflammatory response in ST cells. These observations provided insight into the function of CSFV NS5A and the mechanism of CSFV persistent infection in ST cells.
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Ning P, Gao L, Zhou Y, Hu C, Lin Z, Gong C, Guo K, Zhang X. Caveolin-1-mediated endocytic pathway is involved in classical swine fever virus Shimen infection of porcine alveolar macrophages. Vet Microbiol 2016; 195:81-86. [DOI: 10.1016/j.vetmic.2016.09.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 09/18/2016] [Accepted: 09/20/2016] [Indexed: 11/16/2022]
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Li H, Zhang C, Cui H, Guo K, Wang F, Zhao T, Liang W, Lv Q, Zhang Y. FKBP8 interact with classical swine fever virus NS5A protein and promote virus RNA replication. Virus Genes 2016; 52:99-106. [PMID: 26748656 DOI: 10.1007/s11262-015-1286-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Accepted: 09/02/2015] [Indexed: 11/24/2022]
Abstract
The non-structural 5A (NS5A) protein of classical swine fever virus (CSFV) is proven to be involved in viral replication and can also modulate cellular signaling and host cellular responses via to its ability to interact with various cellular proteins. FKBP8 is also reported to promote virus replication. Here, we show that NS5A specifically interacts with FKBP8 through coimmunoprecipitation and GST-pulldown studies. Additionally, confocal microscopy study showed that NS5A and FKBP8 colocalized in the cytoplasm. Overexpression of FKBP8 via the eukaryotic expression plasmid pDsRED N1 significantly promoted viral RNA synthesis. The cells knockdown of FKBP8 by lentivirus-mediated shRNA markedly decreased the virus replication when infected with CSFV. These data suggest that FKBP8 plays a critical role in the viral life cycle, particularly during the virus RNA replication period. The investigation of FKBP8 protein functions may be beneficial for developing new strategies to treat CSFV infection.
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Affiliation(s)
- Helin Li
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Chengcheng Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Hongjie Cui
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Kangkang Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Fang Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Tianyue Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Wulong Liang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Qizhuang Lv
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.
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Wu R, Tang X, Sheng X, Zhan W. Relationship between Expression of Cellular Receptor-27.8 kDa and Lymphocystis Disease Virus (LCDV) Infection. PLoS One 2015; 10:e0127940. [PMID: 26024218 PMCID: PMC4449202 DOI: 10.1371/journal.pone.0127940] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 04/21/2015] [Indexed: 12/03/2022] Open
Abstract
The 27.8 kDa membrane protein from flounder (Paralichthys olivaceus) gill (FG) cells was previously identified as a putative cellular receptor involved in lymphocystis disease virus (LCDV) infection. In this paper, the expression of receptor-27.8 kDa (27.8R) and LCDV loads in FG cells and hirame natural embryo (HINAE) cells were investigated upon LCDV infection and anti-27.8R monoclonal antibody (MAb) treatment. The results showed the 27.8R was expressed and co-localized with LCDV in both FG and HINAE cell surface. After LCDV infection, the expression of 27.8R exhibited a dose-dependent up-regulation with the increasing of LCDV titers, and demonstrated a tendency to increase firstly and then decrease during a time course up to 9 days; LCDV copies showed a similar variation trend to the 27.8R expression, however, it reached the highest level later than did the 27.8R expression. Additionally, the 27.8R expression and LCDV copies in FG cells were higher than those in HINAE cells. In the presence of increasing concentration of the anti-27.8R MAbs, the up-regulation of 27.8R expression and the copy numbers of LCDV significantly declined post LCDV infection, and the cytopathic effect induced by LCDV in the two cell lines was accordingly reduced, indicating anti-27.8R MAbs pre-incubation could inhibit the up-regulation of 27.8R expression and LCDV infection. These results suggested that LCDV infection could induce up-regulation of 27.8R expression, which in turn increased susceptibility and availability of FG and HINAE cells for LCDV entry, providing important new insights into the LCDV replication cycle and the interaction between this virus and the host cells.
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Affiliation(s)
- Ronghua Wu
- Laboratory of Pathology and Immunology of Aquatic Animals, Ocean University of China, 5 Yushan Road, Qingdao 266003, P. R. China
| | - Xiaoqian Tang
- Laboratory of Pathology and Immunology of Aquatic Animals, Ocean University of China, 5 Yushan Road, Qingdao 266003, P. R. China
| | - Xiuzhen Sheng
- Laboratory of Pathology and Immunology of Aquatic Animals, Ocean University of China, 5 Yushan Road, Qingdao 266003, P. R. China
| | - Wenbin Zhan
- Laboratory of Pathology and Immunology of Aquatic Animals, Ocean University of China, 5 Yushan Road, Qingdao 266003, P. R. China
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He L, Zhang Y, Fang Y, Liang W, Lin J, Cheng M. Classical swine fever virus induces oxidative stress in swine umbilical vein endothelial cells. BMC Vet Res 2014; 10:279. [PMID: 25439655 PMCID: PMC4270048 DOI: 10.1186/s12917-014-0279-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 11/11/2014] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Classical swine fever virus (CSFV) infection causes significant losses of pigs, which is characterized by hemorrhage, disseminated intravascular coagulation and leucopenia. The swine vascular endothelial cell is a primary target cell for CSFV. The aim of this study was to determine the role of CSFV infection in inducing oxidative stress (OS) in vascular endothelial cells. RESULTS We demonstrated that CSFV infection induced oxidative stress in swine umbilical vein endothelial cells (SUVECs), characterized by the induction of reactive oxygen species (ROS) production and the elevations of porcine antioxidant proteins thioredoxin (Trx), peroxiredoxin-6 (PRDX-6) and heme oxygenase-1 (HO-1) expression. Furthermore, cyclooxygenase-2 (COX-2), a pro-inflammatory protein related to oxidative stress, was up-regulated while anti-inflammatory protein peroxisome proliferator-activated receptor-γ (PPAR-γ), an important mediator in vascular functional regulation, was down-regulated in the CSFV infected cells. In addition, antioxidants showed significant inhibitory effects on the CSFV replication, indicating a close relationship between CSFV replication and OS induced in the host cells. CONCLUSIONS Our results indicated that CSFV infection induced oxidative stress in SUVECs. These findings provide novel information on the mechanism by which CSFV can alter intracellular events associated with the viral infection.
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Affiliation(s)
- Lei He
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China. .,Animal Disease and Public Security Academician Workstation of Henan province, The Key Lab of Animal Disease and Public security, Henan University of Science and Technology, Luoyang, 471003, P.R. China.
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Yanqin Fang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Wulong Liang
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Jihui Lin
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Min Cheng
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi, 712100, P.R. China.
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Li W, Wang G, Liang W, Kang K, Guo K, Zhang Y. Integrin β3 is required in infection and proliferation of classical swine fever virus. PLoS One 2014; 9:e110911. [PMID: 25340775 PMCID: PMC4207786 DOI: 10.1371/journal.pone.0110911] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/24/2014] [Indexed: 12/25/2022] Open
Abstract
Classical Swine Fever (CSF) is a highly infectious fatal pig disease, resulting in huge economic loss to the swine industry. Integrins are membrane-bound signal mediators, expressed on a variety of cell surfaces and are known as receptors or co-receptors for many viruses. However, the role of integrin β3 in CSFV infection is unknown. Here, through quantitive PCR, immunofluorescence (IFC) and immunocytohistochemistry (ICC), we revealed that ST (swine testicles epithelial) cells have a prominent advantage in CSFV proliferation as compared to EC (swine umbilical vein endothelial cell), IEC (swine intestinal epithelial cell) and PK (porcine kidney epithelial) cells. Meanwhile, ST cells had remarkably more integrin β3 expression as compared to EC, IEC and PK cells, which was positively correlated with CSFV infection and proliferation. Integrin β3 was up-regulated post CSFV infection in all the four cell lines, while the CSFV proliferation rate was decreased in integrin β3 function-blocked cells. ShRNA1755 dramatically decreased integrin β3, with a deficiency of 96% at the mRNA level and 80% at the protein level. CSFV proliferation was dramatically reduced in integrin β3 constantly-defected cells (ICDC), with the deficiencies of 92.6%, 99% and 81.7% at 24 h, 48 h and 72 h post CSFV infection, respectively. These results demonstrate that integrin β3 is required in CSFV infection and proliferation, which provide a new insight into the mechanism of CSFV infection.
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Affiliation(s)
- Weiwei Li
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Gang Wang
- Jiangsu Key Laboratory of Biological Cancer Therapy, Xuzhou Medical College, Xuzhou, Jiangsu, China
| | - Wulong Liang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Kai Kang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Kangkang Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
- * E-mail:
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Li W, Zhang Y, Kao CC. The classic swine fever virus (CSFV) core protein can enhance de novo-initiated RNA synthesis by the CSFV polymerase NS5B. Virus Genes 2014; 49:106-15. [DOI: 10.1007/s11262-014-1080-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 04/23/2014] [Indexed: 12/28/2022]
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Discovering up-regulated VEGF-C expression in swine umbilical vein endothelial cells by classical swine fever virus Shimen. Vet Res 2014; 45:48. [PMID: 24758593 PMCID: PMC4018968 DOI: 10.1186/1297-9716-45-48] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Accepted: 04/01/2014] [Indexed: 11/10/2022] Open
Abstract
Infection of domestic swine with the highly virulent Shimen strain of classical swine fever virus causes hemorrhagic lymphadenitis and diffuse hemorrhaging in infected swine. We analyzed patterns of gene expression for CSFV Shimen in swine umbilical vein endothelial cells (SUVECs). Transcription of the vascular endothelial growth factor (VEGF) C gene (VEGF-C) and translation of the corresponding protein were significantly up-regulated in SUVECs. Our findings suggest that VEGF-C is involved in mechanisms of acute infection caused by virulent strains of CSFV.
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Zhang Q, Guo KK, Zhang YM, Dai C, Jiang YF, Peng YX. Members of the Let-7 Family Inhibit the Replication of Classical Swine Fever Virus in Swine Umbilical Vein Endothelial Cells. ACTA ACUST UNITED AC 2013. [DOI: 10.3923/ajava.2013.732.739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Interactive cellular proteins related to classical swine fever virus non-structure protein 2 by yeast two-hybrid analysis. Mol Biol Rep 2012; 39:10515-24. [PMID: 23076522 DOI: 10.1007/s11033-012-1936-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 10/01/2012] [Indexed: 10/27/2022]
Abstract
Classical swine fever is caused by the classical swine fever virus (CSFV), which has a special affinity to endothelial cells. This fever is characterized by hemorrhage and necrosis of vascular injury. Very little information is available on the interaction between vascular endothelial cells and CSFV. In the current report, the cDNA library of swine umbilical vein endothelial cell (SUVEC) was constructed by the switching mechanism at 5' end of the RNA transcript approach. The yeast two-hybrid (Y2H) system was adopted to screen non-structure 2 protein (NS2) interactive proteins in the SUVEC line. Alignment with the NCBI database revealed 11 interactive proteins: GOPC, HNRNPH1, DNAJA1, ATP6, CSDE1, CNDP2, FANCL, TMED4, DNAJA4, MOAP1, and PNMA1. These proteins were mostly related to apoptosis, stress response and oxidation reduction, or metabolism. In the protein interaction network constructed based on proteins with NS2, the more important proteins were MOAP1, DNAJA1, GOPC, FANCL, TMED4, and CSDE1. The interactions detected by the Y2H should be regarded only as preliminary indications. However, the CSFV NS2 interactive proteins in the SUVEC cDNA library obtained in the current study provides valuable information for gaining a better understanding of the host protein-virus interactions of the CSFV NS2 protein.
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He L, Zhang YM, Lin Z, Li WW, Wang J, Li HL. Classical swine fever virus NS5A protein localizes to endoplasmic reticulum and induces oxidative stress in vascular endothelial cells. Virus Genes 2012; 45:274-82. [PMID: 22718084 DOI: 10.1007/s11262-012-0773-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 06/04/2012] [Indexed: 12/22/2022]
Abstract
Classical swine fever virus (CSFV) causes a severe disease of pigs that is characterized by hemorrhage, disseminated intravascular coagulation, and leucopenia. Until now, the role of the nonstructural protein 5A (NS5A) produced by CSFV in the pathogenesis of CSF is not well known. In this study, we investigated the function of CSFV NS5A by examining its role in the induction of oxidative stress and related intracellular events. Stable swine umbilical vein endothelial cell lines expressing CSFV NS5A were established and showed that CSFV NS5A is localized to endoplasmic reticulum and induces oxidative stress associated with enhanced reactive oxygen species production. The expression of NS5A protein exerts different effects on the three major antioxidants. Particularly, it exhibits a significant increase in transcriptional activities of antioxidant proteins thioredoxin and peroxiredoxin-6, but accompanied by a concomitant decrease of antioxidant protein heme oxygenase-1. Further studies showed that cyclooxygenase-2, a pro-inflammatory protein related to oxidative stress, is up-regulated while anti-inflammatory protein peroxisome proliferator-activated receptor-γ, an important mediator in vascular functional regulation, is down-regulated in CSFV NS5A expressing cells. This study suggested that CSFV NS5A plays important roles in the induction of oxidative stress and inflammatory response in vascular endothelial cells. These findings provide novel information on the function of the poorly characterized CSFV NS5A and provide an insight into the mechanism by which CSFV NS5A can alter intracellular events associated with the viral infection.
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Affiliation(s)
- Lei He
- College of Veterinary Medicine, Northwest A & F University, Yangling, 712100 Shaanxi, China.
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Zhang B, He Y, Xu C, Xu L, Feng S, Liao M, Ren T. Cytolethal distending toxin (CDT) of the Haemophilus parasuis SC096 strain contributes to serum resistance and adherence to and invasion of PK-15 and PUVEC cells. Vet Microbiol 2011; 157:237-42. [PMID: 22221379 DOI: 10.1016/j.vetmic.2011.12.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 11/28/2011] [Accepted: 12/01/2011] [Indexed: 11/17/2022]
Abstract
Cytolethal distending toxin (CDT) is proposed to be an important virulence determinant of many pathogens. Although two cdt gene cluster loci have been identified in Haemophilus parasuis strain SH0165, the characteristics of CDTs associated with pathogenesis remain unclear. In this study, three CDT-deficient mutants, cdt-1, cdt-2 and the double-knockout cdt-1cdt-2 (Δcdt-1, Δcdt-2 and Δcdt-1Δcdt-2, respectively), were obtained in the H. parasuis serovar 4 clinical strain SC096 using a natural transformation method. Compared to the wild-type SC096 strain, the Δcdt-1, Δcdt-2 and Δcdt-1Δcdt-2 mutants showed subtle growth defects and clearly exhibited an increased sensitivity to the bactericidal action of porcine and rabbit sera. Additionally, these mutants had a significantly reduced ability to adhere to and invade porcine umbilicus vein endothelial cells (PUVEC) and porcine kidney epithelial cells (PK-15). These findings suggest that both CDTs in the H. parasuis SC096 strain are involved in serum resistance and adherence and invasion of host cells.
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Affiliation(s)
- Bin Zhang
- Key Laboratory of Veterinary Vaccine Innovation of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, People's Republic of China
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