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Kushwaha A, Kumar A, Chandrasekhar S, Poulinlu G, Chand K, Muthuchelvan D, Venkatesan G. Baculovirus expression and purification of virion core and envelope proteins of goatpox virus to evaluate their diagnostic potential. Arch Virol 2024; 169:172. [PMID: 39096433 DOI: 10.1007/s00705-024-06079-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 05/13/2024] [Indexed: 08/05/2024]
Abstract
Goatpox and sheeppox are highly contagious and economically important viral diseases of small ruminants. Due to the risk they pose to animal health, livestock production, and international trade, capripoxviruses are a considerable threat to the livestock economy. In this study, we expressed two core proteins (A4L and A12L) and one extracellular enveloped virion protein (A33R) of goatpox virus in a baculovirus expression vector system and evaluated their use as diagnostic antigens in ELISA. Full-length A4L, A12L, and A33R genes of the GTPV Uttarkashi strain were amplified, cloned into the pFastBac HT A donor vector, and introduced into DH10Bac cells containing a baculovirus shuttle vector plasmid to generate recombinant bacmids. The recombinant baculoviruses were produced in Sf-21 cells by transfection, and proteins were expressed in TN5 insect cells. The recombinant proteins were analysed by SDS-PAGE and confirmed by western blot, with expected sizes of ~30 kDa, ~31 kDa, and ~32 kDa for A4L, A12L, and A33R, respectively. The recombinant proteins were purified, and the immunoreactivity of the purified proteins was confirmed by western blot using anti-GTPV serum. The antigenic specificity of the expressed proteins as diagnostic antigens was evaluated by testing their reactivity with infected, vaccinated, and negative GTPV/SPPV serum in indirect ELISA, and the A33R-based indirect ELISA was optimized. The diagnostic sensitivity and specificity of the A33R-based indirect ELISA were found to be of 89% and 94% for goats and 98% and 91%, for sheep, respectively. No cross-reactivity was observed with other related viruses. The recombinant-A33R-based indirect ELISA developed in the present study shows that it has potential for the detection of antibodies in GTPV and SPPV infected/vaccinated animals.
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Affiliation(s)
- Anand Kushwaha
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | - Amit Kumar
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | - S Chandrasekhar
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | - G Poulinlu
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | - Karam Chand
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | | | - G Venkatesan
- FMD Laboratory, ICAR - Indian Veterinary Research Institute, H A Farm, Hebbal, Bengaluru, Karnataka, 560024, India.
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Ntombela N, Matsiela M, Zuma S, Hiralal S, Naicker L, Mokoena N, Khoza T. Production of recombinant lumpy skin disease virus A27L and L1R proteins for application in diagnostics and vaccine development. Vaccine X 2023; 15:100384. [PMID: 37736535 PMCID: PMC10509699 DOI: 10.1016/j.jvacx.2023.100384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/23/2023] Open
Abstract
Vaccination using live attenuated vaccines (LAVs) is considered the most effective method for control of lumpy skin disease (LSD). However, this method is limited by safety concerns, with reports of adverse reactions following vaccination. This study evaluates A27L and L1R which are essential proteins for virus attachment and membrane fusion as recombinant sub-unit vaccines against LSD. These proteins were recombinantly expressed in Escherichia coli and purified using affinity chromatography. Purified proteins were formulated individually (A27L or L1R) and in combination (A27L and L1R) with 10% (w/w) Montanide™ Gel 01 PR adjuvant at a final antigen dose of 20 µg per protein. The safety and immunogenicity of these formulations were evaluated in rabbits in a 42-day clinical trial. Animals were vaccinated on day 0 and boost injection administered 21 days later. No reduced morbidity, increased temperature and any other clinical signs were recorded in vaccinated animals for all three vaccine formulations. The highest neutralizing antibody response was detected on day 42 post-primary vaccination for all formulations when using serum neutralising assay. The neutralisation data correlates with antibody titres quantified using a whole cell ELISA. Evaluating the combination of A27L and L1R as potential diagnostic reagents showed highest sensitivity for detection of antibodies against LSD when compared to individual proteins. This study reports the immunogenicity of recombinant A27L and L1R combination for successful application in LSD vaccine development. Furthermore, these proteins demonstrated the potential use in LSD diagnostics.
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Affiliation(s)
- Nomfundo Ntombela
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg Campus), Scottsville 3209, KwaZulu-Natal, South Africa
| | - Matome Matsiela
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg Campus), Scottsville 3209, KwaZulu-Natal, South Africa
- Onderstepoort Biological Products (SOC. Ltd), 100, Old, Soutpan Road, Onderstepoort, 0110, Pretoria, South Africa
| | - Sbahle Zuma
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg Campus), Scottsville 3209, KwaZulu-Natal, South Africa
| | - Suhavna Hiralal
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg Campus), Scottsville 3209, KwaZulu-Natal, South Africa
| | - Leeann Naicker
- Onderstepoort Biological Products (SOC. Ltd), 100, Old, Soutpan Road, Onderstepoort, 0110, Pretoria, South Africa
| | - Nobalanda Mokoena
- Onderstepoort Biological Products (SOC. Ltd), 100, Old, Soutpan Road, Onderstepoort, 0110, Pretoria, South Africa
| | - Thandeka Khoza
- Department of Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg Campus), Scottsville 3209, KwaZulu-Natal, South Africa
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Mazloum A, Van Schalkwyk A, Babiuk S, Venter E, Wallace DB, Sprygin A. Lumpy skin disease: history, current understanding and research gaps in the context of recent geographic expansion. Front Microbiol 2023; 14:1266759. [PMID: 38029115 PMCID: PMC10652407 DOI: 10.3389/fmicb.2023.1266759] [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: 07/25/2023] [Accepted: 09/28/2023] [Indexed: 12/01/2023] Open
Abstract
Lumpy skin disease is recognized as a transboundary and emerging disease of cattle, buffaloes and other wild ruminants. Being initially restricted to Africa, and since 1989 the Middle East, the unprecedented recent spread across Eurasia demonstrates how underestimated and neglected this disease is. The initial identification of the causative agent of LSD as a poxvirus called LSD virus, was well as findings on LSDV transmission and epidemiology were pioneered at Onderstepoort, South Africa, from as early as the 1940s by researchers such as Weiss, Haig and Alexander. As more data emerges from an ever-increasing number of epidemiological studies, previously emphasized research gaps are being revisited and discussed. The currently available knowledge is in agreement with the previously described South African research experience that LSDV transmission can occur by multiple routes, including indirect contact, shared water sources and arthropods. The virus population is prone to molecular evolution, generating novel phylogenetically distinct variants resulting from a diverse range of selective pressures, including recombination between field and homologous vaccine strains in cell culture that produce virulent recombinants which pose diagnostic challenges. Host restriction is not limited to livestock, with certain wild ruminants being susceptible, with unknown consequences for the epidemiology of the disease.
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Affiliation(s)
- Ali Mazloum
- Federal Center for Animal Health, Vladimir, Russia
| | - Antoinette Van Schalkwyk
- Agricultural Research Council – Onderstepoort Veterinary Institute, Onderstepoort, South Africa
- Department of Biotechnology, University of the Western Cape, Bellville, South Africa
| | - Shawn Babiuk
- National Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB, Canada
| | - Estelle Venter
- College of Public Health, Medical and Veterinary Sciences, Discipline Veterinary Science, James Cook University, Townsville, QLD, Australia
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
| | - David B. Wallace
- Agricultural Research Council – Onderstepoort Veterinary Institute, Onderstepoort, South Africa
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
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Hurisa TT, Chen G, Jia H, Xiang FY, He XB, Jing ZZ. Evaluation of antibody responses against the whole virions of goatpox and sheeppox viruses after subcutaneous immunization of rabbits. Heliyon 2022; 8:e11745. [PMID: 36439728 PMCID: PMC9681629 DOI: 10.1016/j.heliyon.2022.e11745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 05/04/2022] [Accepted: 11/11/2022] [Indexed: 11/19/2022] Open
Abstract
Antibody development is the integral process of generating and characterizing an antibody. It commences by inoculating the antigen of interest into laboratory animals, allowing the immune system develops large quantities of antibodies. This was aimed at developing antibodies against the virion of Goatpox and Sheeppox virus vaccines. The ability of Goatpox and Sheeppox vaccines was assessed. Regarding this study, the antibody titers against both Goatpox and Sheeppox viruses was increased in the same manner. The amount of IgG was determined to be 2.29 μg/μl and 2.18 μg/μl against virions of Goatpox virus and Sheeppox respectively. The purified IgG was analyzed by SDS-PAGE. Different bands of the purified antibodies were clearly visualized, and the molecular weight of IgG was estimated to be 67 kDa and 25 kDa. Additionally, antigen/antibody binding was confirmed by Western blot using GTPV A27 antigen. No significant differences in antibody titers were observed between the two groups (p < 0, 05).
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Affiliation(s)
- Takele Tesgera Hurisa
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Agriculture Ministry, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, Gansu, China
| | - Guohua Chen
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Agriculture Ministry, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, Gansu, China
| | - Huaijie Jia
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Agriculture Ministry, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, Gansu, China
| | - Fang Yong Xiang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Agriculture Ministry, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, Gansu, China
| | - Xiao-Bing He
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Agriculture Ministry, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, Gansu, China
| | - Zhi-Zhong Jing
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Public Health of Agriculture Ministry, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, Gansu, China
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Comparative evaluation of the diagnostic potential of two major core proteins of goatpox virus expressed in the prokaryotic system. Small Rumin Res 2022. [DOI: 10.1016/j.smallrumres.2022.106866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Du C, Si Y, Pang N, Li Y, Guo Y, Liu C, Fan H. Prokaryotic expression, purification, physicochemical properties and antifungal activity analysis of phloem protein PP2-A1 from cucumber. Int J Biol Macromol 2022; 194:395-401. [PMID: 34822821 DOI: 10.1016/j.ijbiomac.2021.11.081] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/12/2021] [Accepted: 11/12/2021] [Indexed: 11/18/2022]
Abstract
Phloem protein 2 (PP2) is a protein having lectin properties that can be isolated from the phloem sap. Based on our previous proteomic study of phloem sap of Cucumis sativus, it was found that the expression of PP2 A1-like was significantly up-regulated under salt stress, which may be a molecular mechanism of plant adaptation to stress. This paper carried out the expression and purification of the CsPP2-A1 gene in E. coli for further characteristic analysis. The results demonstrated that the CsPP2-A1 in shake flask cultures was mainly expressed in the soluble form at 15 °C or in inclusion bodies at 37 °C. Secondly, Ni-IDA affinity chromatography and SDS-PAGE were employed to yield highly purified CsPP2-A1 protein. The purified CsPP2-A1 was then subjected to Western blot and MALDI-TOF-MS analysis for protein identification. The biological activity analysis results showed that CsPP2-A1 had hemagglutinating activities to rabbit erythrocytes, and Chitotetraose may be the specific inhibitory sugar of CsPP2-A1. The optimal hemagglutination activity of CsPP2-A1 protein was achieved between pH 5-9, and between 20 and 60 °C. Moreover, CsPP2-A1 had significant inhibitory effects on Botrytis cinerea and Phytophthora infestans, and the inhibitory effect on B. cinerea was better than that on P. infestans.
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Affiliation(s)
- Changxia Du
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Yuyang Si
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Ningning Pang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Yapeng Li
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Yuting Guo
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Chen Liu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China
| | - Huaifu Fan
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 311300, Zhejiang, China.
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Madhavan A, Venkatesan G, Kumar A, Arya S, Pandey AB. Comparative sequence and structural analysis of the ORF095 gene, a vaccinia virus A4L homolog of capripoxvirus in sheep and goats. Arch Virol 2020; 165:1419-1431. [PMID: 32307603 DOI: 10.1007/s00705-020-04623-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 03/23/2020] [Indexed: 10/24/2022]
Abstract
Sheeppox and goatpox are important transboundary animal viral diseases of sheep and goats caused by sheeppox virus (SPPV) and goatpox virus (GTPV), respectively, of the genus Capripoxvirus, family Poxviridae. Among the proteins encoded by the capripoxvirus (CaPV) genome, ORF095 (vaccinia virus A4L homolog) is an immunodominant virion core protein that plays a pivotal role in virus assembly and morphogenesis. In the present study, sequence analysis of the ORF095 genes of 27 SPPV and GTPV isolates or field samples from different geographical regions of India was performed, and structure was prediction was done by homology modeling. A multiple sequence alignment of different CaPV isolates revealed that CaPV-A4L is highly conserved, with several species-specific signature residues, namely A93, A216, A315, G136 and G146 in GTPV, G47, A63, A168 and A276 in SPPV, and G48 and C98 in lumpy skin disease virus (LSDV). Phylogenetically, the CaPV isolates were separated into three major clusters, GTPV, SPPV and LSDV, based on the complete coding sequence of the CaPV-A4L gene. Genus-specific clustering of poxviruses was observed in phylogenetic analysis based on A4L protein homologs of chordopoxviruses. A secondary structure prediction showed the presence of six α-helices and one β-sheet as well as some coils. The signature residues identified here are potentially useful for genotyping, and the predicted characteristics of the CaPV-A4L protein make it an ideal candidate for use as an immunogenic or diagnostic antigen for the development of immunoassays in the sero-evaluation of CaPV in target hosts.
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Affiliation(s)
- Aparna Madhavan
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | - Gnanavel Venkatesan
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India.
| | - Amit Kumar
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | - Sargam Arya
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
| | - A B Pandey
- Division of Virology, ICAR-Indian Veterinary Research Institute, Mukteswar 263 138, Nainital District, Uttarakhand, India
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