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Zhang X, Zhou L, Ge X, Gao P, Zhou Q, Han J, Guo X, Zhang Y, Yang H. Advances in the diagnostic techniques of African swine fever. Virology 2025; 603:110351. [PMID: 39693789 DOI: 10.1016/j.virol.2024.110351] [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: 10/22/2024] [Revised: 12/01/2024] [Accepted: 12/09/2024] [Indexed: 12/20/2024]
Abstract
African swine fever (ASF) is a highly contagious disease of pigs caused by African swine fever virus, which poses a huge threat to the global swine industry and is therefore listed as a notifiable disease by the World Organization for Animal Health. Due to the global lack of safe and efficacious vaccines and therapeutic drugs, early diagnosis of cases, whether on-site or laboratory, are crucial for the prevention and control of ASF. Therefore, rapid and reliable diagnosis and detection have become the main means to combat ASF. In this paper, various diagnostic techniques developed globally for ASF diagnosis, including etiological, molecular biological and serological diagnostic techniques, as well as conventional and novel diagnostic techniques, were comprehensively reviewed, and the main advantages and disadvantages of currently commonly used diagnostic techniques were introduced. It is expected that this paper will provide references for selecting appropriate ASF diagnostic techniques in different application scenarios, and also provide directions for the development of innovative diagnostic techniques for ASF in the future.
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Affiliation(s)
- Xin Zhang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Lei Zhou
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Xinna Ge
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Peng Gao
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Qiongqiong Zhou
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jun Han
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Xin Guo
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Yongning Zhang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| | - Hanchun Yang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Key Laboratory of Animal Epidemiology of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
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Tao S, Duan Y, Zha Y, Tong X, He Y, Feng H, Shu J. Development and Evaluation of an Immunochromatographic Strip and a Magnetic Chemiluminescence Immunoassay for Detection of Porcine Circovirus Type 2 Antigen. Vet Sci 2025; 12:40. [PMID: 39852915 PMCID: PMC11769083 DOI: 10.3390/vetsci12010040] [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: 12/03/2024] [Revised: 01/03/2025] [Accepted: 01/08/2025] [Indexed: 01/26/2025] Open
Abstract
Porcine circovirus type 2 (PCV2) is the main and primary causative agent of Postweaning Multisystemic Wasting Syndrome (PMWS). To date, immunoperoxidase monolayer assay (IPMA), indirect immunofluorescent assay (IFA), and enzyme linked immunosorbent assay (ELISA) are the most commonly diagnostic methods for detecting PCV2 antigens. However, these methods require specialized equipment and technical expertise and are suitable for laboratory use only. This study aims to develop an immunochromatographic strip and a magnetic chemiluminescence immunoassay for the detection of PCV2 antigens. The recombinant protein was constructed using a prokaryotic expression system, and the polyclonal antibody was obtained by animal experiments. Polystyrene microspheres are used as solid phase carriers to covalently bind to the amino groups of proteins to form immunoprobes. Monodisperse beads are covalently bound to antigens or antibodies as solid phases to bind antibodies or antigens in the liquid phase in a superior manner, thereby capturing and separating antigens and antibodies in the liquid phase. The immunochromatographic strip is qualitative detection method, this method can detect PCV2a strain, PCV2b strain, and PCV2d strain. The immunochromatographic strip had minimum detection limits of 102.89TCID50/0.1 mL, 103.19TCID50/0.1 mL, and 103.49TCID50/0.1 mL for PCV2a/LG, PCV2b/SH, and PCV2d/JH. The results of testing PEDV (CV777 strain), PRV (HB2000 strain), CSFV (WH-09 strain), PRRS (JXA1-R strain), PPV (WH-1 strain), and ASFV (SD strain) were negative. The agreement between the immunochromatographic strip and the ELISA kit was 93.33% (140/150) and the Kappa was 0.866 (Kappa > 0.81). On the premise of ensuring sensitivity, the most important feature of the immunochromatographic strip is that this method can save time when testing; results can be obtained within 5 to 10 min. Magnetic chemiluminescence immunoassay is quantitative detection method; this method can detect PCV2 Cap proteins in swine serum, the linear range of this method was 0.25 ng/mL to 32 ng/mL and R2 of the standard curve was 0.9993. The limit of detection (LOD) is 0.051 ng/mL and the limit of quantitation (LOQ) is 0.068 ng/mL. The agreement between the magnetic chemiluminescence immunoassay and the ELISA kit (test PCV2 Cap proteins) was 97.14% (68/70). This method took less than 30 min to achieve results, which is less than the ELISA kit. The results of this study show that immunochromatographic strip and magnetic chemiluminescence immunoassay for PCV2 antigens had great sensitivity and specificity, which lays the foundation for PCV2 clinical detection.
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Affiliation(s)
- Sirui Tao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; (S.T.); (Y.D.); (Y.Z.); (Y.H.); (H.F.)
| | - Yu Duan
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; (S.T.); (Y.D.); (Y.Z.); (Y.H.); (H.F.)
| | - Yinhe Zha
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; (S.T.); (Y.D.); (Y.Z.); (Y.H.); (H.F.)
- Zhejiang Hom-Sun Biosciences Co., Ltd., Shaoxing 312000, China;
| | - Xiaxia Tong
- Zhejiang Hom-Sun Biosciences Co., Ltd., Shaoxing 312000, China;
| | - Yulong He
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; (S.T.); (Y.D.); (Y.Z.); (Y.H.); (H.F.)
- Research Center of Animal Vaccines and Diagnostic Reagents, Zhejiang Sci-Tech University Shaoxing Academy of Biomedicine, Shaoxing 312090, China
| | - Huapeng Feng
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; (S.T.); (Y.D.); (Y.Z.); (Y.H.); (H.F.)
| | - Jianhong Shu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China; (S.T.); (Y.D.); (Y.Z.); (Y.H.); (H.F.)
- Zhejiang Hom-Sun Biosciences Co., Ltd., Shaoxing 312000, China;
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Yang Y, Li Y, Wang Z, Tong M, Zhu P, Deng J, Li Z, Liu K, Li B, Shao D, Zhou Z, Qiu Y, Ma Z, Wei J. p54-Fc-Labeled Gold Nanoparticle-Based Lateral Flow Strip-Assisted Portable Devices for Rapid and Quantitative Point-of-Care Detection of ASFV Antibodies. BIOSENSORS 2025; 15:25. [PMID: 39852075 PMCID: PMC11763327 DOI: 10.3390/bios15010025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2024] [Revised: 12/30/2024] [Accepted: 12/31/2024] [Indexed: 01/26/2025]
Abstract
In this study, a novel rapid immunochromatographic (IC) test for African swine fever virus (ASFV) antibodies is presented. An immunochromatographic test (IC) is a detection technique that combines membrane chromatography with immunolabeling. This approach saves time for antibody preparation, resulting in a shorter production cycle. p54 is an important structural protein of African swine fever, and an ideal protein for serotype diagnosis. Gold nanoparticles are attached to the ASFV p54-Fc fusion protein, and the ASFV-specific antigen p54 and Staphylococcus aureus protein A (SPA) are labeled on a nitrocellulose membrane, at positions T and C, respectively. We developed a SPA double sandwich IC test strip, and assessed its feasibility using ASFV p54 and p54-Fc fusion proteins as antigens. ASFV p54 and p54-Fc fusion proteins were expressed and purified. A sandwich cross-flow detection method for p54, which is the primary structural protein of ASFV, was established, using colloidal gold conjugation. Our method can detect ASFV antibodies in field serum samples in about 15 min using a portable colloidal gold detector, demonstrating high specificity and sensitivity (1:320), and the coincidence rate was 98% using a commercial ELISA kit. The dilution of the serum sample can be determined by substituting the absorbance (T-line) interpreted by portable devices into the calibration curve function formula of an African swine fever virus standard serum. In summary, our method is rapid, cost-effective, precise, and highly selective. Additionally, it introduces a new approach for constructing IC test strips using SPA protein without antibody preparation, making it a reliable on-site antibody test for ASFV.
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Affiliation(s)
- Yang Yang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Yuhao Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Ziyang Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Minglong Tong
- Yixing Customs, Yixing 214200, China; (M.T.); (P.Z.)
| | - Pengcheng Zhu
- Yixing Customs, Yixing 214200, China; (M.T.); (P.Z.)
- Nanjing Customs, Nanjing 210001, China;
| | | | - Zongjie Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Ke Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Beibei Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Donghua Shao
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Zhongren Zhou
- Shanghai Quicking Biotech Co., Shanghai 201314, China;
| | - Yafeng Qiu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Zhiyong Ma
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
| | - Jianchao Wei
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (Y.Y.); (Y.L.); (Z.W.); (Z.L.); (K.L.); (B.L.); (D.S.); (Y.Q.)
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Wang L, Li D, Zeng D, Wang X, Liu Y, Peng G, Xu Z, Song C. Development and Application of a Fully Automated Chemiluminescence Enzyme Immunoassay for the Detection of Antibodies Against Porcine Circovirus 3 Cap. Viruses 2024; 16:1925. [PMID: 39772232 PMCID: PMC11680332 DOI: 10.3390/v16121925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2024] [Revised: 12/07/2024] [Accepted: 12/11/2024] [Indexed: 01/11/2025] Open
Abstract
Porcine circovirus 3 (PCV3) is a small non-enveloped circovirus associated with porcine dermatitis and nephropathy syndrome (PDNS). It has occurred worldwide and poses a serious threat to the pig industry. However, there is no commercially available vaccine. PCV3 capsid protein (Cap) is an ideal antigen candidate for serodiagnosis. Here, a novel fully automated chemiluminescence enzyme immunoassay (CLEIA) was developed to detect antibodies (Abs) to Cap in porcine serum. Recombinant PCV3 Cap, self-assembled into virus-like particles (VLPs), was produced using baculovirus and coupled to magnetic particles (Cap-MPs) as carriers. Combined with an alkaline phosphatase (AP)-adamantane (AMPPD) system, Cap-Abs can be rapidly measured on a fully automated chemiluminescence analyzer. Under optimal conditions, a cut-off value of 31,508 was determined, with a diagnostic sensitivity of 96.8% and specificity of 97.3%. No cross-reactivity was observed with PCV1 and PCV2 and other common porcine pathogens, and both intra-assay and inter-assay coefficients were less than 5% and 10%, respectively. Prepared Cap-MPs can be stored at 4 °C for more than 6 months. Importantly, this CLEIA had a good agreement of 95.19% with the commercially available kit, demonstrating excellent analytical sensitivity and significantly reduced operating time and labor. A serological survey was then conducted, and showed that PCV3 continues to spread widely in South China. In conclusion, our CLEIA provides time and labor-saving, and a reliable tool for PCV3 epidemiological surveillance.
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Affiliation(s)
- Lei Wang
- College of Life Sciences, Longyan University, Longyan 364012, China;
- State Key Laboratory of Swine and Poultry Breeding Industry, National Engineering Center for Swine Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (D.L.); (X.W.); (Y.L.)
| | - Duan Li
- State Key Laboratory of Swine and Poultry Breeding Industry, National Engineering Center for Swine Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (D.L.); (X.W.); (Y.L.)
- Wens Foodstuff Group Co., Ltd., Yunfu 527400, China;
- Biaoyun Biotechnology Co., Ltd., Yunfu 527400, China
| | - Daoping Zeng
- Wens Foodstuff Group Co., Ltd., Yunfu 527400, China;
- Biaoyun Biotechnology Co., Ltd., Yunfu 527400, China
| | - Xiaomin Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, National Engineering Center for Swine Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (D.L.); (X.W.); (Y.L.)
| | - Yanlin Liu
- State Key Laboratory of Swine and Poultry Breeding Industry, National Engineering Center for Swine Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (D.L.); (X.W.); (Y.L.)
| | - Guoliang Peng
- Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan 512005, China;
| | - Zheng Xu
- State Key Laboratory of Swine and Poultry Breeding Industry, National Engineering Center for Swine Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (D.L.); (X.W.); (Y.L.)
| | - Changxu Song
- State Key Laboratory of Swine and Poultry Breeding Industry, National Engineering Center for Swine Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China; (D.L.); (X.W.); (Y.L.)
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Wang L, Li D, Zeng D, Wang S, Wu J, Liu Y, Peng G, Xu Z, Jia H, Song C. Development of a fully automated chemiluminescent immunoassay for the quantitative and qualitative detection of antibodies against African swine fever virus p72. Microbiol Spectr 2024; 12:e0080924. [PMID: 39145655 PMCID: PMC11448198 DOI: 10.1128/spectrum.00809-24] [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: 03/28/2024] [Accepted: 07/01/2024] [Indexed: 08/16/2024] Open
Abstract
African swine fever (ASF), caused by ASF virus (ASFV), is a highly infectious and severe hemorrhagic disease of pigs that causes major economic losses. Currently, no commercial vaccine is available and prevention and control of ASF relies mainly on early diagnosis. Here, a novel automated double antigen sandwich chemiluminescent immunoassay (DAgS-aCLIA) was developed to detect antibodies against ASFV p72 (p72-Ab). For this purpose, recombinant p72 trimer was produced, coupled to magnetic particles as carriers and labeled with acridinium ester as a signal trace. Finally, p72-Ab can be sensitively and rapidly measured on an automated chemiluminescent instrument. For quantitative analysis, a calibration curve was established with a laudable linearity range of 0.21 to 212.0 ng/mL (R2 = 0.9910) and a lower detection limit of 0.15 ng/mL. For qualitative analysis, a cut-off value was set at 1.50 ng/mL with a diagnostic sensitivity of 100.00% and specificity of 98.33%. Furthermore, antibody response to an ASF gene-deleted vaccine candidate can be accurately quantified using this DAgS-aCLIA, as evidenced by early seroconversion as early as 7 days post-immunization and high antibody levels. Compared with available enzyme-linked immunosorbent assays, this DAgS-aCLIA demonstrated a wider linearity range of 4 to 16-fold, and excellent analytical sensitivity and agreement of over 95.60%. In conclusion, our proposed DAgS-aCLIA would be an effective tool to support ASF epidemiological surveillance.IMPORTANCEAfrican swine fever virus (ASFV) is highly contagious in wild boar and domestic pigs. There is currently no vaccine available for ASF, so serological testing is an important diagnostic tool. Traditional enzyme-linked immunosorbent assays provide only qualitative results and are time and resource consuming. This study will develop an automated chemiluminescent immunoassay (CLIA) that can quantitatively and qualitatively detect antibodies to ASFV p72, greatly reducing detection time and labour-intensive operation, and improving detection sensitivity and linearity range. This novel CLIA would serve as a reliable and convenient tool for ASF pandemic surveillance and vaccine development.
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Affiliation(s)
- Lei Wang
- College of Animal Science, National Engineering Center for Swine Breeding Industry, State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou, China
- Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan, China
| | - Duan Li
- College of Animal Science, National Engineering Center for Swine Breeding Industry, State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou, China
| | | | - Shuangyun Wang
- College of Animal Science, National Engineering Center for Swine Breeding Industry, State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou, China
| | - Jianwen Wu
- College of Animal Science, National Engineering Center for Swine Breeding Industry, State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou, China
| | - Yanlin Liu
- College of Animal Science, National Engineering Center for Swine Breeding Industry, State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou, China
| | - Guoliang Peng
- Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan, China
| | - Zheng Xu
- College of Animal Science, National Engineering Center for Swine Breeding Industry, State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou, China
| | - Hong Jia
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Changxu Song
- College of Animal Science, National Engineering Center for Swine Breeding Industry, State Key Laboratory of Swine and Poultry Breeding Industry, South China Agricultural University, Guangzhou, China
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Hu Z, Tian X, Lai R, Wang X, Li X. Current detection methods of African swine fever virus. Front Vet Sci 2023; 10:1289676. [PMID: 38144466 PMCID: PMC10739333 DOI: 10.3389/fvets.2023.1289676] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/24/2023] [Indexed: 12/26/2023] Open
Abstract
African swine fever (ASF), caused by the African swine fever virus (ASFV), is a highly contagious and notifiable animal disease in domestic pigs and wild boars, as designated by the World Organization for Animal Health (WOAH). The effective diagnosis of ASF holds great importance in promptly controlling its spread due to its increasing prevalence and the continuous emergence of variant strains. This paper offers a comprehensive review of the most common and up-to-date methods established for various genes/proteins associated with ASFV. The discussed methods primarily focus on the detection of viral genomes or particles, as well as the detection of ASFV associated antibodies. It is anticipated that this paper will serve as a reference for choosing appropriate diagnostic methods in diverse application scenarios, while also provide direction for the development of innovative technologies in the future.
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Affiliation(s)
- Zhiqiang Hu
- Shandong Engineering Laboratory of Pig and Poultry Healthy Breeding and Disease Diagnosis Technology, Xiajin New Hope Liuhe Agriculture and Animal Husbandry Co., Ltd., Dezhou, China
- Shandong New Hope Liuhe Co., Ltd., Qingdao, China
- Shandong New Hope Liuhe Agriculture and Animal Husbandry Technology Co., Ltd., (NHLH Academy of Swine Research), Dezhou, China
- China Agriculture Research System-Yangling Comprehensive Test Station, Xianyang, China
| | - Xiaogang Tian
- Shandong Engineering Laboratory of Pig and Poultry Healthy Breeding and Disease Diagnosis Technology, Xiajin New Hope Liuhe Agriculture and Animal Husbandry Co., Ltd., Dezhou, China
- Shandong New Hope Liuhe Co., Ltd., Qingdao, China
- Shandong New Hope Liuhe Agriculture and Animal Husbandry Technology Co., Ltd., (NHLH Academy of Swine Research), Dezhou, China
| | - Ranran Lai
- Shandong Engineering Laboratory of Pig and Poultry Healthy Breeding and Disease Diagnosis Technology, Xiajin New Hope Liuhe Agriculture and Animal Husbandry Co., Ltd., Dezhou, China
- Shandong New Hope Liuhe Co., Ltd., Qingdao, China
- Shandong New Hope Liuhe Agriculture and Animal Husbandry Technology Co., Ltd., (NHLH Academy of Swine Research), Dezhou, China
| | - Xinglong Wang
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
| | - Xiaowen Li
- Shandong Engineering Laboratory of Pig and Poultry Healthy Breeding and Disease Diagnosis Technology, Xiajin New Hope Liuhe Agriculture and Animal Husbandry Co., Ltd., Dezhou, China
- Shandong New Hope Liuhe Co., Ltd., Qingdao, China
- Shandong New Hope Liuhe Agriculture and Animal Husbandry Technology Co., Ltd., (NHLH Academy of Swine Research), Dezhou, China
- China Agriculture Research System-Yangling Comprehensive Test Station, Xianyang, China
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China
- Key Laboratory of Feed and Livestock and Poultry Products Quality and Safety Control, Ministry of Agriculture and Rural Affairs, New Hope Liuhe Co., Ltd., Chengdu, China
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Wang Y, Li R, Zhang Y, Zhang W, Hu S, Li Z. Visual and label-free ASFV and PCV2 detection by CRISPR-Cas12a combined with G-quadruplex. Front Vet Sci 2022; 9:1036744. [PMID: 36524221 PMCID: PMC9745048 DOI: 10.3389/fvets.2022.1036744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/07/2022] [Indexed: 09/29/2023] Open
Abstract
African swine fever (ASF) and postweaning multisystemic wasting syndrome (PMWS) are acute infectious diseases caused by the African swine fever virus (ASFV) and porcine circovirus type 2 (PCV2). At present, there are no effective vaccines for the prevention of ASFV. PMWS, which is harmful to the domestic and even the world pig industry, is difficult to cure and has a high mortality. So, developing simple, inexpensive, and accurate analytical methods to detect and effectively diagnose ASFV and PCV2 can be conducive to avoid ASFV and PCV2 infection. CRISPR has become a potentially rapid diagnostic tool due to recent discoveries of the trans-cleavage properties of CRISPR type V effectors. Herein, we report the visual detection based on CRISPR-Cas12a (cpf1), which is more convenient than fluorescence detection. Through in vitro cleavage target DNA activation, Cas12a can trans-cleavage ssDNA G-quadruplex. TMB/H2O2 and Hemin cannot be catalyzed by cleavaged G-DNA to produce green color products. This protocol is useful for the detection of ASFV and PCV2 with high sensitivity. This method can enable the development of visual and label-free ASFV and PCV2 detection and can be carried out in the field without relying on instruments or power. This method can complete nucleic acid detection at 37 °C without using other instruments or energy. Our research has expanded the application of Cas12a and laid the foundation for the field's rapid detection of viral nucleic acid in future.
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Affiliation(s)
- Ying Wang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
| | - Rong Li
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yang Zhang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Weida Zhang
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Sishun Hu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, China
| | - Zili Li
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Preventive Veterinary Medicine in Hubei Province, Wuhan, China
- Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, China
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Zhu J, Dou L, Shao S, Kou J, Yu X, Wen K, Wang Z, Yu W. An Automated and Highly Sensitive Chemiluminescence Immunoassay for Diagnosing Mushroom Poisoning. Front Chem 2022; 9:813219. [PMID: 35004629 PMCID: PMC8733245 DOI: 10.3389/fchem.2021.813219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 12/08/2021] [Indexed: 11/21/2022] Open
Abstract
Mushrooms containing Amanita peptide toxins are the major cause of mushroom poisoning, and lead to approximately 90% of deaths. Phallotoxins are the fastest toxin causing poisoning among Amanita peptide toxins. Thus, it is imperative to construct a highly sensitive quantification method for the rapid diagnosis of mushroom poisoning. In this study, we established a highly sensitive and automated magnetic bead (MB)-based chemiluminescence immunoassay (CLIA) for the early, rapid diagnosis of mushroom poisoning. The limits of detection (LODs) for phallotoxins were 0.010 ng/ml in human serum and 0.009 ng/ml in human urine. Recoveries ranged from 81.6 to 95.6% with a coefficient of variation <12.9%. Analysis of Amanita phalloides samples by the automated MB-based CLIA was in accordance with that of HPLC-MS/MS. The advantages the MB-based CLIA, high sensitivity, repeatability, and stability, were due to the use of MBs as immune carriers, chemiluminescence as a detection signal, and an integrated device to automate the whole process. Therefore, the proposed automated MB-based CLIA is a promising option for the early and rapid clinical diagnosis of mushroom poisoning.
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Affiliation(s)
- Jianyu Zhu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China.,School of Basic Medicine, Beihua University, Jilin, China
| | - Leina Dou
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Shibei Shao
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jiaqian Kou
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xuezhi Yu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Kai Wen
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zhanhui Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Wenbo Yu
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
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9
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Li J, Bai Y, Li F, Zhang Y, Xie Q, Zhang L, Hua L, Xiong Q, Shan Y, Bu Z, Shao G, Feng Z, Zhao D, Liu F. Rapid and ultra-sensitive detection of African swine fever virus antibody on site using QDM based-ASFV immunosensor (QAIS). Anal Chim Acta 2022; 1189:339187. [PMID: 34815032 DOI: 10.1016/j.aca.2021.339187] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 09/30/2021] [Accepted: 10/18/2021] [Indexed: 12/27/2022]
Abstract
African swine fever (ASF) is a swine viral disease that could cause highly contagious and extremely high mortality, causing huge economic losses to the pig industry. As there is currently no vaccine and effective treatment methods. Therefore, early monitoring is one of the most important solutions to prevent and control ASF. In this study, the dual QDM recombinant virus protein 30 and 54 (P30 and P54) probes and pre-incubation in vitro were proposed for the first time as QDM based-ASFV immunosensor (QAIS) for the ultra-sensitive quantitative detection of ASFV antibodies in serum. In the range from serum dilution of 1:1000 to 1:64000, it showed a good linear relationship (R2 = 0.9947), and its detection sensitivity was 1:64000 dilution. Compared with commercial enzyme-linked immunosorbent assay (ELISA) and colloidal gold immunochromatographic strip (CGICS), its detection sensitivity was improved by at least one order of magnitude and four orders of magnitude respectively. In addition, the whole ASFV antibody screening test can be completed in 25 min with simple operation. The performance and practicability of the established QAIS sensor have been verified by ASF-ELISA kit, and its coincidence rate was as high as 98.7% in 151 clinical samples. We firmly believe that the proposed QAIS sensor could potentially be applied to point-of-care testing (POCT) for quantitative ASFV antibody in pig farms.
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Affiliation(s)
- Jiahao Li
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Yun Bai
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, 210014, China
| | - Fang Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Yue Zhang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Qingyun Xie
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, 210014, China
| | - Lei Zhang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, 210014, China
| | - Lizhong Hua
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, 210014, China
| | - Qiyan Xiong
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, 210014, China
| | - Yanke Shan
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Zhigao Bu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guoqing Shao
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, 210014, China
| | - Zhixin Feng
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing, 210014, China.
| | - Dongming Zhao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
| | - Fei Liu
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
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10
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Lv C, Zhao Y, Jiang L, Zhao L, Wu C, Hui X, Hu X, Shao Z, Xia X, Sun X, Zhang Q, Jin M. Development of a Dual ELISA for the Detection of CD2v-Unexpressed Lower-Virulence Mutational ASFV. Life (Basel) 2021; 11:life11111214. [PMID: 34833090 PMCID: PMC8626036 DOI: 10.3390/life11111214] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/29/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022] Open
Abstract
African swine fever virus (ASFV) is an important viral pathogen infecting pigs worldwide throughout the pig industry. CD2v (an outer-membrane glycosylated protein of ASFV)-unexpressed lower-virulence mutants have appeared in China and other countries in recent years. Using OIE-recommended quantitative PCR and ELISA methods, people can accurately judge whether pigs are infected with wild-type ASFV. However, the strategy has failed to distinguish ΔCD2v lower-virulence mutants and wild-type ASFV infection. Here, we expressed and purified the CD2v and p30 proteins via CHO cells and successfully established a dual enzyme-linked immunosorbent assay (ELISA), which can be used to differentiate pigs infected with wild-type ASFV or with CD2v-unexpressed lower-virulence mutants. The dual ELISA showed excellent specificity without cross-reactions with antibodies of PRRSV, CSFV, JEV, PRV, or PPV. The dual ELISA could detect ASFV-infected positive serum samples up to dilutions of 5120 times, possessing high sensitivity. Therefore, the application of this dual ELISA approach can play an important role in ASFV epidemiology study and fill the gaps in differential diagnosis.
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Affiliation(s)
- Changjie Lv
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Ya Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Lili Jiang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Li Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Chao Wu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Xianfeng Hui
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Xiaotong Hu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Ziqi Shao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Xiaohan Xia
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Xiaomei Sun
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
| | - Qiang Zhang
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan 430070, China
- Correspondence: (Q.Z.); (M.J.)
| | - Meilin Jin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (C.L.); (Y.Z.); (L.J.); (L.Z.); (C.W.); (X.H.); (X.H.); (X.X.); (X.S.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
- Correspondence: (Q.Z.); (M.J.)
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