1
|
Zhu R, Wang Y, Zhang H, Yang J, Fan J, Zhang Y, Wang Y, Li Q, Zhou X, Yue H, Qi Y, Wang S, Chen T, Zhang S, Hu R. Deletion of the B125R gene in the African swine fever virus SY18 strain leads to an A104R frameshift mutation slightly attenuating virulence in domestic pigs. Virus Res 2024; 343:199343. [PMID: 38423214 PMCID: PMC10982076 DOI: 10.1016/j.virusres.2024.199343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
African swine fever (ASF), caused by the ASF virus (ASFV), is a hemorrhagic and fatal viral disease that affects Eurasian wild boars and domestic pigs, posing a substantial threat to the global pig breeding industry. ASFV, a double-stranded DNA virus, possesses a large genome containing up to 160 open reading frames, most of which exhibit unknown functions. The B125R gene of ASFV, located at the 105595-105972 bp site in the ASFV-SY18 genome, remains unexplored. In this study, we discovered that B125R deletion did not affect recombinant virus rescue, nor did it hinder viral replication during the intermediate growth phase. Although the virulence of the recombinant strain harboring this deletion was attenuated, intramuscular inoculation of the recombinant virus in pigs at doses of 102 or 104 TCID50 resulted in mortality. Moreover, sequencing analysis of six recombinant strains obtained from three independent experiments consistently revealed an adenine insertion at the 47367-47375 bp site in the A104R gene due to the B125R deletion, leading to premature termination of this gene. Intriguingly, this insertion did not influence the transcription of the A104R gene between the recombinant and parental strains. Consequently, we postulate that the deletion of the B125R gene in ASFV-SY18 or other genotype II strains may marginally attenuate virulence in domestic pigs.
Collapse
Affiliation(s)
| | | | - Han Zhang
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Jinjin Yang
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Jiaqi Fan
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Yanyan Zhang
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Yu Wang
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Qixuan Li
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Xintao Zhou
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Huixian Yue
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Yu Qi
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Shuchao Wang
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Teng Chen
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Shoufeng Zhang
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| | - Rongliang Hu
- Key Laboratory of Prevention & Control for African Swine Fever and Other Major Pig Diseases, Ministry of Agriculture and Rural Affairs, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China
| |
Collapse
|
2
|
Li S, Song J, Liu J, Zhou S, Zhao G, Li T, Huang L, Li J, Weng C. African swine fever virus infection regulates pyroptosis by cleaving gasdermin A via active caspase-3 and caspase-4. J Biol Chem 2024; 300:107307. [PMID: 38657868 DOI: 10.1016/j.jbc.2024.107307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 04/09/2024] [Accepted: 04/12/2024] [Indexed: 04/26/2024] Open
Abstract
African swine fever, caused by the African swine fever virus (ASFV), is a viral hemorrhagic disease that affects domestic pigs and wild boars. ASFV infection causes extensive tissue damage, and the associated mechanism is poorly understood. Pyroptosis is characterized by the activation of inflammatory caspases and pore formation in the cellular plasma membrane, resulting in the release of inflammatory cytokines and cell damage. How ASFV infection regulates pyroptosis remains unclear. Here, using siRNA assay and overexpression methods, we report that ASFV infection regulated pyroptosis by cleaving the pyroptosis execution protein gasdermin A (GSDMA). ASFV infection activated caspase-3 and caspase-4, which specifically cleaved GSDMA at D75-P76 and D241-V242 to produce GSDMA into five fragments, including GSDMA-N1-75, GSDMA-N1-241, and GSDMA-N76-241 fragments at the N-terminal end of GSDMA. Only GSDMA-N1-241, which was produced in the late stage of ASFV infection, triggered pyroptosis and inhibited ASFV replication. The fragments, GSDMA-N1-75 and GSDMA-N76-241, lose the ability to induce pyroptosis. Overall ASFV infection differentially regulates pyroptosis by GSDMA in the indicated phase, which may be conducive to its own replication. Our findings reveal a novel molecular mechanism for the regulation of pyroptosis.
Collapse
Affiliation(s)
- Shuai Li
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China
| | - Jie Song
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China
| | - Jia Liu
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China
| | - Shijun Zhou
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China
| | - Gaihong Zhao
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China
| | - Tingting Li
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China
| | - Li Huang
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China
| | - Jiangnan Li
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China.
| | - Changjiang Weng
- Division of Fundamental Immunology, National African Swine Fever Para-Reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, Heilongjiang, China; Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, Heilongjiang, China.
| |
Collapse
|
3
|
Ye G, Zhang Z, Liu X, Liu H, Chen W, Feng C, Li J, Zhou Q, Zhao D, Zhang S, Chen H, Bu Z, Huang L, Weng C. African swine fever virus pH240R enhances viral replication via inhibition of the type I IFN signaling pathway. J Virol 2024; 98:e0183423. [PMID: 38353534 PMCID: PMC10949494 DOI: 10.1128/jvi.01834-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 12/19/2023] [Indexed: 03/20/2024] Open
Abstract
African swine fever (ASF) is an acute, hemorrhagic, and severe infectious disease caused by ASF virus (ASFV) infection. At present, there are still no safe and effective drugs and vaccines to prevent ASF. Mining the important proteins encoded by ASFV that affect the virulence and replication of ASFV is the key to developing effective vaccines and drugs. In this study, ASFV pH240R, a capsid protein of ASFV, was found to inhibit the type I interferon (IFN) signaling pathway. Mechanistically, pH240R interacted with IFNAR1 and IFNAR2 to disrupt the interaction of IFNAR1-TYK2 and IFNAR2-JAK1. Additionally, pH240R inhibited the phosphorylation of IFNAR1, TYK2, and JAK1 induced by IFN-α, resulting in the suppression of the nuclear import of STAT1 and STAT2 and the expression of IFN-stimulated genes (ISGs). Consistent with these results, H240R-deficient ASFV (ASFV-∆H240R) infection induced more ISGs in porcine alveolar macrophages compared with its parental ASFV HLJ/18. We also found that pH240R enhanced viral replication via inhibition of ISGs expression. Taken together, our results clarify that pH240R enhances ASFV replication by inhibiting the JAK-STAT signaling pathway, which highlights the possibility of pH240R as a potential drug target.IMPORTANCEThe innate immune response is the host's first line of defense against pathogen infection, which has been reported to affect the replication and virulence of African swine fever virus (ASFV) isolates. Identification of ASFV-encoded proteins that affect the virulence and replication of ASFV is the key step in developing more effective vaccines and drugs. In this study, we found that pH240R interacted with IFNAR1 and IFNAR2 by disrupting the interaction of IFNAR1-TYK2 and IFNAR2-JAK1, resulting in the suppression of the expression of interferon (IFN)-stimulated genes (ISGs). Consistent with these results, H240R-deficient ASFV (ASFV-∆H240R) infection induces more ISGs' expression compared with its parental ASFV HLJ/18. We also found that pH240R enhanced viral replication via inhibition of ISGs' expression. Taken together, our findings showed that pH240R enhances ASFV replication by inhibiting the IFN-JAK-STAT axis, which highlights the possibility of pH240R as a potential drug target.
Collapse
Affiliation(s)
- Guangqiang Ye
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Zhaoxia Zhang
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
- Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, China
| | - Xiaohong Liu
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongyang Liu
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Weiye Chen
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Chunying Feng
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Jiangnan Li
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
- Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, China
| | - Qiongqiong Zhou
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Dongming Zhao
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Shuai Zhang
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hefeng Chen
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Zhigao Bu
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Li Huang
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
- Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, China
| | - Changjiang Weng
- Division of Fundamental Immunology, National African Swine Fever Para-reference Laboratory, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
- Heilongjiang Provincial Key Laboratory of Veterinary Immunology, Harbin, China
| |
Collapse
|
4
|
Wang L, Ganges L, Dixon LK, Bu Z, Zhao D, Truong QL, Richt JA, Jin M, Netherton CL, Benarafa C, Summerfield A, Weng C, Peng G, Reis AL, Han J, Penrith ML, Mo Y, Su Z, Vu Hoang D, Pogranichniy RM, Balaban-Oglan DA, Li Y, Wang K, Cai X, Shi J. 2023 International African Swine Fever Workshop: Critical Issues That Need to Be Addressed for ASF Control. Viruses 2023; 16:4. [PMID: 38275939 PMCID: PMC10819980 DOI: 10.3390/v16010004] [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: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 01/27/2024] Open
Abstract
The 2023 International African Swine Fever Workshop (IASFW) took place in Beijing, China, on 18-20 September 2023. It was jointly organized by the U.S.-China Center for Animal Health (USCCAH) at Kansas State University (KSU) and the Chinese Veterinary Drug Association (CVDA) and sponsored by the United States Department of Agriculture Foreign Agricultural Service (USDA-FAS), Harbin Veterinary Research Institute, and Zoetis Inc. The objective of this workshop was to provide a platform for ASF researchers around the world to unite and share their knowledge and expertise on ASF control and prevention. A total of 24 outstanding ASF research scientists and experts from 10 countries attended this meeting. The workshop included presentations on current ASF research, opportunities for scientific collaboration, and discussions of lessons and experiences learned from China/Asia, Africa, and Europe. This article summarizes the meeting highlights and presents some critical issues that need to be addressed for ASF control and prevention in the future.
Collapse
Affiliation(s)
- Lihua Wang
- Center on Vaccine Evaluation and Alternatives for Antimicrobials, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (L.W.); (Y.L.)
| | - Llilianne Ganges
- WOAH Reference Laboratory for Classical Swine Fever, IRTA-CReSA, 08193 Barcelona, Spain;
- IRTA, Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Bellaterra, 08193 Barcelona, Spain
| | - Linda K. Dixon
- The Pirbright Institute, Ash Road, Pirbright, Woking GU24 0NF, UK; (L.K.D.); (C.L.N.); (A.L.R.)
| | - Zhigao Bu
- State Key Laboratory for Animal Disease Control and Prevention, National African Swine Fever Para-Reference Laboratory, National High Containment Facilities for Animal Diseases Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Z.B.); (D.Z.)
| | - Dongming Zhao
- State Key Laboratory for Animal Disease Control and Prevention, National African Swine Fever Para-Reference Laboratory, National High Containment Facilities for Animal Diseases Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, China; (Z.B.); (D.Z.)
| | - Quang Lam Truong
- Key Laboratory of Veterinary Biotechnology, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi 12406, Vietnam;
| | - Juergen A. Richt
- Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA;
| | - Meilin Jin
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (M.J.); (G.P.)
| | | | - Charaf Benarafa
- Institute of Virology and Immunology IVI, Federal Department of Home Affairs, 3147 Mittelhäusern, Switzerland; (C.B.); (A.S.)
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Postfach, 3012 Bern, Switzerland
- Multidisciplinary Center for Infectious Diseases, University of Bern, Postfach, 3012 Bern, Switzerland
| | - Artur Summerfield
- Institute of Virology and Immunology IVI, Federal Department of Home Affairs, 3147 Mittelhäusern, Switzerland; (C.B.); (A.S.)
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Postfach, 3012 Bern, Switzerland
- Multidisciplinary Center for Infectious Diseases, University of Bern, Postfach, 3012 Bern, Switzerland
| | - Changjiang Weng
- National African Swine Fever Para-Reference Laboratory, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, China;
| | - Guiqing Peng
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China; (M.J.); (G.P.)
| | - Ana L. Reis
- The Pirbright Institute, Ash Road, Pirbright, Woking GU24 0NF, UK; (L.K.D.); (C.L.N.); (A.L.R.)
| | - Jun Han
- College of Veterinary Medicine, China Agricultural University, Beijing 100107, China;
| | - Mary-Louise Penrith
- Department of Veterinary Tropical Diseases, University of Pretoria, Hatfield 0028, South Africa;
| | - Yupeng Mo
- Dekang Agriculture and Animal Husbandry Group, Chengdu 610225, China;
| | | | - Dang Vu Hoang
- National Institute of Veterinary Research, Hanoi 100000, Vietnam;
| | - Roman M. Pogranichniy
- Veterinary Diagnostic Laboratory, Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA;
| | - David-Adrian Balaban-Oglan
- Romanian Association of Swine Veterinarians, 013821 Bucharest, Romania;
- Faculty of Veterinary Medicine, University of Agronomic Science and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Yuzhen Li
- Center on Vaccine Evaluation and Alternatives for Antimicrobials, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (L.W.); (Y.L.)
| | - Kewen Wang
- Swine Unit, Zoetis China, Beijing 102208, China;
| | - Xuepeng Cai
- Chinese Veterinary Drug Association, Beijing 100081, China
| | - Jishu Shi
- Center on Vaccine Evaluation and Alternatives for Antimicrobials, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (L.W.); (Y.L.)
| |
Collapse
|