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PI3K-Akt pathway-independent PIK3AP1 identified as a replication inhibitor of the African swine fever virus based on iTRAQ proteomic analysis. Virus Res 2023; 327:199052. [PMID: 36775023 DOI: 10.1016/j.virusres.2023.199052] [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: 11/08/2022] [Revised: 01/16/2023] [Accepted: 01/22/2023] [Indexed: 02/14/2023]
Abstract
African swine fever (ASF) is a severe infectious disease that has a high global prevalence. The fatality rate of pigs infected with ASF virus (ASFV) is close to 100%; in the absence of a safe and reliable commercial vaccine, this poses a threat to the global pig industry and public health. To better understand the interaction of ASFV with its host, isobaric tags for relative and absolute quantitation combined with liquid chromatography-mass spectrometry was used to conduct quantitative proteomic analysis of bone marrow-derived macrophage cells infected with ASFV. Overall, 4579 proteins were identified; 286 of these were significantly upregulated and 69 were significantly downregulated after ASFV infection. Gene Ontology, Kyoto Encyclopedia of Genes and Genomes, and protein-protein interaction network analyses were used to obtain insights into the dynamics and complexity of the ASFV-host interaction. In addition, immunoblotting revealed that the expression of PIK3AP1, RNF114, and FABP5 was upregulated and that of TRAM1 was downregulated after ASFV infection. Overexpression of PIK3AP1 and RNF114 significantly inhibited ASFV replication in vitro, but the suppressive effect of PIK3AP1 on ASFV replication was independent of the PI3K-Akt pathway. Further studies confirmed that ASFV MGF360-9L interacts with PIK3AP1 to reduce its protein expression level. Moreover, LY294002, an inhibitor of the PI3K-Akt pathway, inhibited ASFV replication, indicating the importance of the PI3K-Akt pathway in ASFV infection. This study identified the network of interactions between ASFV and host cells and provides a reference for the development of anti-ASFV strategies and for studying the potential mechanisms and pathogenesis of ASFV infection.
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Yang H, Zhang W, Wang M, Yuan S, Zhang X, Wen F, Guo J, Mei K, Huang S, Li Z. Characterization and pathogenicity evaluation of recombinant novel duck reovirus isolated from Southeast China. Front Vet Sci 2023; 10:1124999. [PMID: 36998638 PMCID: PMC10043381 DOI: 10.3389/fvets.2023.1124999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/24/2023] [Indexed: 03/17/2023] Open
Abstract
The novel duck reovirus (NDRV) emerged in southeast China in 2005. The virus causes severe liver and spleen hemorrhage and necrosis in various duck species, bringing serious harm to waterfowl farming. In this study, three strains of NDRV designated as NDRV-ZSS-FJ20, NDRV-LRS-GD20, and NDRV-FJ19 were isolated from diseased Muscovy ducks in Guangdong and Fujian provinces. Pairwise sequence comparisons revealed that the three strains were closely related to NDRV, with nucleotide sequence identities for 10 genomic fragments ranging between 84.8 and 99.8%. In contrast, the nucleotide sequences of the three strains were only 38.9–80.9% similar to the chicken-origin reovirus and only 37.6–98.9% similar to the classical waterfowl-origin reovirus. Similarly, phylogenetic analysis revealed that the three strains clustered together with NDRV and were significantly different from classical waterfowl-origin reovirus and chicken-origin reovirus. In addition, the analyses showed that the L1 segment of the NDRV-FJ19 strain was a recombinant of 03G and J18 strains. Experimental reproduction of the disease showed that the NDRV-FJ19 strain was pathogenic to both ducks and chickens and could lead to symptoms of hemorrhage and necrosis in the liver and spleen. This was somewhat different from previous reports that NDRV is less pathogenic to chickens. In conclusion, we speculated that the NDRV-FJ19 causing duck liver and spleen necrosis is a new variant of a duck orthoreovirus that is significantly different in pathogenicity from any previously reported waterfowl-origin orthoreovirus.
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Affiliation(s)
- Huihu Yang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Wandi Zhang
- Nanyang Vocational College of Agriculture, Nanyang, China
| | - Meihong Wang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Sheng Yuan
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Xuelian Zhang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Feng Wen
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Jinyue Guo
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Kun Mei
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Shujian Huang
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
- *Correspondence: Shujian Huang
| | - Zhili Li
- College of Life Science and Engineering, Foshan University, Foshan, Guangdong, China
- Zhili Li
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Detection and Identification of Avian Reovirus in Young Geese ( Anser anser domestica) in Poland. Animals (Basel) 2022; 12:ani12233346. [PMID: 36496863 PMCID: PMC9736766 DOI: 10.3390/ani12233346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/17/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022] Open
Abstract
Avian reovirus (ARV) is a cause of infections of broiler and turkey flocks, as well as waterfowl birds. This case report describes a reovirus detection in a fattening goose flock. GRV-infected geese suffer from severe arthritis, tenosynovitis, pericarditis, depressed growth, or runting-stunting syndrome (RSS), malabsorption syndrome, and respiratory and enteric diseases. GRV (goose reovirus) caused pathological lesions in various organs and joints, especially in the liver and spleen. GRV infection causes splenic necrosis, which induces immunosuppression, predisposing geese to infection with other pathogens, which could worsen the disease and lead to death. Our results showed that GRV was detected via RT-PCR and isolated in SPF (Specific Pathogen Free) embryos. This is the first report of the involvement of reovirus in arthritis, and the generalized infection of young geese in Poland, resulting in pathological changes in internal organs and sudden death. This study also provides new information about the GRV, a disease that is little known and underestimated.
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Zhang S, Li W, Liu X, Li X, Gao B, Diao Y, Tang Y. A TaqMan-based real-time PCR assay for specific detection of novel duck reovirus in China. BMC Vet Res 2020; 16:306. [PMID: 32843030 PMCID: PMC7445919 DOI: 10.1186/s12917-020-02523-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 08/14/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND In China, Newly emerging duck reovirus (NDRV) variants have been causing major disease problems in cherry valley ducks. NDRV has the potential to cause high morbidity and 5-50% mortality rates. Severe hemorrhagic-necrosis in the liver and spleen were commonly seen in NDRV affected ducks. The availability of upgraded methods for rapid diagnosis of newly emerging DRV variants is crucial for successful DRV infection control and prevention. RESULTS In this study, we present a TaqMan-based real-time PCR assay (RT-qPCR) for the detection of NDRV infection. Using the conserved regions within the NDRV genome, we designed the specific primers and probe. The lower limit of detection for NDRV infection was 10 copies/μL (Ct values: 38.3) after the optimization of the RT-qPCR conditions. By cross-checking with other duck viral pathogens, no cross-reactivity was observed confirming the assay was highly specific for the detection of NDRV. Reproducibility of the RT-qPCR was confirmed by intra- and inter-assay variability was less than 2.91%(Intra-assay variability of Ct values: 0.07-1.48%; Interassay variability of Ct values: 0.49-2.91%). This RT-qPCR and conventional PCR (cPCR) detected one hundred and twenty samples of NDRV infection from different regions. The result shows that the positive rates were 94.17 and 84.17% respectively. The detection rate of RT-qPCR rapid detection assay was 10% higher than that of the cPCR method. CONCLUSION This research developed a highly sensitive, specific, reproducible and versatile of RT-qPCR for quantitatively detecting NDRV. It can be used to study the pathogenesis and epidemiology investigation of NDRV.
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Affiliation(s)
- Shuai Zhang
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China
| | - Weihua Li
- College of Animal medical, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Xiaodong Liu
- Qingdao Yibang Bioengineering Co. Ltd., Qingdao, 266000, Shandong, China
| | - Xudong Li
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China
| | - Bin Gao
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China
| | - Youxiang Diao
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China. .,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China. .,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China.
| | - Yi Tang
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China. .,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China. .,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China.
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