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Zhong D, Wahaab A, Zheng J, Zhang J, Ma Z, Wei J. Development of Colloidal Gold-Based Immunochromatographic Strips for Rapid Detection and Surveillance of Japanese Encephalitis Virus in Dogs across Shanghai, China. Viruses 2024; 16:258. [PMID: 38400034 PMCID: PMC10892515 DOI: 10.3390/v16020258] [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: 12/15/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
Japanese encephalitis virus (JEV) causes acute encephalitis in humans and is of major public health concern in most Asian regions. Dogs are suitable sentinels for assessing the risk of JEV infection in humans. A neutralization test (NT) or an enzyme-linked immunosorbent assay (ELISA) is used for the serological detection of JEV in dogs; however, these tests have several limitations, and, thus, a more convenient and reliable alternative test is needed. In this study, a colloidal gold immunochromatographic strip (ICS), using a purified recombinant EDIII protein, was established for the serological survey of JEV infection in dogs. The results show that the ICSs could specifically detect JEV antibodies within 10 min without cross-reactions with antibodies against other canine viruses. The test strips could detect anti-JEV in serum with dilution up to 640 times, showing high sensitivity. The coincidence rate with the NT test was higher than 96.6%. Among 586 serum samples from dogs in Shanghai examined using the ICS test, 179 (29.98%) were found to be positive for JEV antibodies, and the high seropositivity of JEV in dogs in China was significantly correlated with the season and living environment. In summary, we developed an accurate and economical ICS for the rapid detection of anti-JEV in dog serum samples with great potential for the surveillance of JEV in dogs.
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Affiliation(s)
- Dengke Zhong
- Shanghai Vocational College of Agriculture and Forestry, Shanghai 201600, China;
| | - Abdul Wahaab
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (A.W.); (J.Z.); (J.Z.); (Z.M.)
- Department of Entomology, Center for Infectious Disease Dynamics and The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16801, USA
| | - Jiayang Zheng
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (A.W.); (J.Z.); (J.Z.); (Z.M.)
| | - Junjie Zhang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (A.W.); (J.Z.); (J.Z.); (Z.M.)
| | - Zhiyong Ma
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (A.W.); (J.Z.); (J.Z.); (Z.M.)
| | - Jianchao Wei
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (A.W.); (J.Z.); (J.Z.); (Z.M.)
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2
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Jiang M, Wang A, Sun Y, Li Y, Chen Y, Zhou J, Liu H, Ding P, Qi Y, Li N, Zhang G. Development of a Gold Nanoparticle-Based Immunochromatographic Strip for Rapid Detection of Porcine Circovirus Type 2. Microbiol Spectr 2023; 11:e0195322. [PMID: 37466437 PMCID: PMC10434270 DOI: 10.1128/spectrum.01953-22] [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: 05/31/2022] [Accepted: 05/15/2023] [Indexed: 07/20/2023] Open
Abstract
Porcine circovirus type 2 (PCV2) is an important swine infectious pathogen that seriously threatens the global swine industry. PCV2 Cap protein is the only structural and the main immunogenic protein constituting the viral capsid. In this study, a gold nanoparticle-based immunochromatographic strip with high sensitivity and specificity was developed which could be used for rapid detection of PCV2 virions or Cap protein in research. The visual detection limit of the strip was 103.18 50% tissue culture infective does (TCID50)/mL for PCV2, and 2.03 μg/mL for PCV2 Cap protein. No cross-reactivity was observed with the PCV1 and PCV3 Cap proteins and other common swine pathogens such as porcine reproductive and respiratory syndrome virus, classical swine fever virus, pseudorabies virus, porcine epidemic diarrhea virus, porcine parvovirus, and swine influenza virus. The repeatability of the strip was good. The stability of the strip was perfect for 12 months in a dry state at room temperature. Visual results could be obtained within 5 min by simply inserting the strip into the diluted sample. The strip is a time-saving, labor-saving, and reliable tool for testing of PCV2 virions or Cap protein in research. The idea of this study might open a new perspective for the application of the strip. IMPORTANCE Porcine circovirus type 2 (PCV2) Cap protein is the only structural and the main immunogenic protein constituting the viral capsid. Although many methods can be used to identify PCV2 or PCV2 Cap protein in vaccine research, they usually require high workload and time. The developed strip can specifically detect PCV2 virions or Cap protein, and visual qualitative results can be obtained within 5 min by simply diluting the sample and inserting the strip into the sample. The final value of the strip is providing a simple and time-saving method for real-time monitoring of PCV2 antigen in vaccine research with reliable results, such as the different stages of PCV2 Cap protein expression and purification, as well as the different stages of PCV2 reproduction and purification.
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Affiliation(s)
- Min Jiang
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Aiping Wang
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Agricultural University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Yaning Sun
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
| | - Yuan Li
- School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
| | - Yumei Chen
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Jingming Zhou
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Hongliang Liu
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Peiyang Ding
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Yanhua Qi
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Ning Li
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
| | - Gaiping Zhang
- Longhu Laboratory of Advanced Immunology, Zhengzhou, Henan, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, Henan, China
- School of Advanced Agricultural Sciences, Peking University, Beijing, China
- Henan Agricultural University, Zhengzhou, Henan, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
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3
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A Novel Aptamer Lateral Flow Strip for the Rapid Detection of Gram-positive and Gram-negative Bacteria. JOURNAL OF ANALYSIS AND TESTING 2022. [DOI: 10.1007/s41664-022-00239-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Point-of-Care Diagnostics for Farm Animal Diseases: From Biosensors to Integrated Lab-on-Chip Devices. BIOSENSORS 2022; 12:bios12070455. [PMID: 35884258 PMCID: PMC9312888 DOI: 10.3390/bios12070455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 02/06/2023]
Abstract
Zoonoses and animal diseases threaten human health and livestock biosecurity and productivity. Currently, laboratory confirmation of animal disease outbreaks requires centralized laboratories and trained personnel; it is expensive and time-consuming, and it often does not coincide with the onset or progress of diseases. Point-of-care (POC) diagnostics are rapid, simple, and cost-effective devices and tests, that can be directly applied on field for the detection of animal pathogens. The development of POC diagnostics for use in human medicine has displayed remarkable progress. Nevertheless, animal POC testing has not yet unfolded its full potential. POC devices and tests for animal diseases face many challenges, such as insufficient validation, simplicity, and portability. Emerging technologies and advanced materials are expected to overcome some of these challenges and could popularize animal POC testing. This review aims to: (i) present the main concepts and formats of POC devices and tests, such as lateral flow assays and lab-on-chip devices; (ii) summarize the mode of operation and recent advances in biosensor and POC devices for the detection of farm animal diseases; (iii) present some of the regulatory aspects of POC commercialization in the EU, USA, and Japan; and (iv) summarize the challenges and future perspectives of animal POC testing.
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5
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Mu Y, Jia C, Zheng X, Zhu H, Zhang X, Xu H, Liu B, Zhao Q, Zhou EM. A nanobody-horseradish peroxidase fusion protein-based competitive ELISA for rapid detection of antibodies against porcine circovirus type 2. J Nanobiotechnology 2021; 19:34. [PMID: 33526021 PMCID: PMC7852356 DOI: 10.1186/s12951-021-00778-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 01/16/2021] [Indexed: 01/08/2023] Open
Abstract
Background The widespread popularity of porcine circovirus type 2(PCV2) has seriously affected the healthy development of the pig industry and caused huge economic losses worldwide. A rapid and reliable method is required for epidemiological investigation and evaluating the effect of immunization. However, the current methods for PCV2 antibody detection are time-consuming or very expensive and rarely meet the requirements for clinical application. we have constructed the platform for expressing the nanobody(Nb)‑horseradish peroxidase(HRP) fusion protein as an ultrasensitive probe to detect antibodies against the Newcastle disease virus(NDV), previously. In the present work, an Nb-HRP fusion protein-based competitive ELISA(cELISA) for rapid and simple detection antibodies against PCV2 was developed using this platform to detect anti-PCV2 antibodies in clinical porcine serum. Results Using phage display technology, 19 anti-PCV2-Cap protein nanobodies were screened from a PCV2-Cap protein immunized Bactrian camel. With the platform, the PCV2-Nb15‑HRP fusion protein was then produced and used as a sensitive reagent for developing a cELISA to detect anti‑PCV2 antibodies. The cut‑off value of the cELISA is 20.72 %. Three hundreds and sixty porcine serum samples were tested by both newly developed cELISA and commercial kits. The sensitivity and specificity were 99.68 % and 95.92 %, respectively. The coincidence rate of the two methods was 99.17 %. When detecting 620 clinical porcine serum samples, a good consistent (kappa value = 0.954) was found between the results of the cELISA and those of commercial kits. Conclusions In brief, the newly developed cELISA based PCV2-Nb15‑HRP fusion protein is a rapid, low-cost, reliable and useful nanobody-based tool for the serological evaluation of current PCV2 vaccine efficacy and the indirect diagnosis of PCV2 infection.
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Affiliation(s)
- Yang Mu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China.
| | - Cunyu Jia
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - Xu Zheng
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - Haipeng Zhu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - Xin Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - Haoran Xu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Baoyuan Liu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - Qin Zhao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China.,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - En-Min Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, 712100, China.
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6
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Raysyan A, Galvidis IA, Schneider RJ, Eremin SA, Burkin MA. Development of a latex particles-based lateral flow immunoassay for group determination of macrolide antibiotics in breast milk. J Pharm Biomed Anal 2020; 189:113450. [PMID: 32693204 DOI: 10.1016/j.jpba.2020.113450] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/24/2023]
Abstract
A lateral flow immunoassay (LFIA) using latex particles labeled with antibody to BSA-clarithromycin (CLA) was developed for the rapid simultaneous group determination of six macrolide antibiotics. Optimization of antigen spotting on the membrane and latex probe loading allowed improving visual detectability (vLOD) 100 times, which was 1, 1, 10, 10, 50, and 1000 ng/mL for CLA, roxithromycin, erythromycin, dirithromycin, azithromycin, and oleandomycin in buffer, respectively. The calculated limits of instrumental detection (cLOD) were respectively 0.12, 0.15, 1.4, 2.1, 2.4, and 3.3 ng/mL. To avoid a strong influence of breast milk of a very diverse and variable composition, a sample pretreatment is proposed. The six macrolides mentioned can be visually detected in breast milk after 20 min pretreatment at concentrations of 10-1000 ng/mL or instrumentally with cLOD of 4.0, 2.5, 30, 42, 42 and 180 ng/mL. The recovery rate from the spiked samples carried out using a strip scanner device ranged from 71 % to 110 %, and precision expressed as relative standard deviation was between 3-14 %. The described rapid on-site diagnostic assay format can be useful for monitoring the content of antibiotics in breast milk during macrolide treatment to ensure safe breastfeeding of infants.
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Affiliation(s)
- Anna Raysyan
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12489 Berlin, Germany; Department of Chemistry, Humboldt-Universität zu Berlin, 10099 Berlin, Germany
| | - Inna A Galvidis
- I. Mechnikov Research Institute for Vaccines and Sera, Moscow 105064, Russia
| | - Rudolf J Schneider
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12489 Berlin, Germany; Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Sergei A Eremin
- Chemical Faculty, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Maksim A Burkin
- I. Mechnikov Research Institute for Vaccines and Sera, Moscow 105064, Russia.
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7
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Wang Z, Shi Y, Wang Y, Zhao L, Cui X, Wen S, Liu H, Cui W, Chen H, Ge J. Detection of Antibodies Against Canine Circovirus in Naturally and Experimentally Infected Canines by Recombinant Capsid Enzyme-Linked Immunosorbent Assay. Front Vet Sci 2020; 7:294. [PMID: 32548131 PMCID: PMC7270207 DOI: 10.3389/fvets.2020.00294] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/29/2020] [Indexed: 11/30/2022] Open
Abstract
Canine circovirus (CanineCV), a new pathogen, was found to be associated with canine hemorrhagic diarrhea, vasculitis, granulomatous lymphadenitis, and acute gastroenteritis. Although CanineCV was highly positive rate in diarrhea cases, its pathogenicity remains controversial. In this study, the seroprevalence and associated risk factors of CanineCV infection among domestic dogs in northeastern China was investigated by an indirect enzyme-linked immunosorbent assay (iELISA) based on recombinant capsid protein. Results revealed the proposed iELISA had no cross-reactivity with other related pathogens, and yielded good diagnostic values. Then, to evaluate the rCap iELISA, this study applied it to detect antibodies against CanineCV in 1,047 clinical serum samples obtained from northeastern China in 2016–2017. Results showed the positive rates in the five cities of Jilin, Liaoning, and Heilongjiang provinces ranged from 22.22 to 42.29%. Statistical analysis shows a significant difference in age between dogs <3 months old with respect to the >1-year-old dogs (p = 0.005), that is, the CanineCV infection was more frequently identified from older dogs. In the artificially infected experiment, the dogs developed seroconversion after 9 or 12 days and the main way of virus excretion was through feces. More interestingly, among the 32 ELISA-positive serum samples, 34.75% samples tested positive for the CanineCV DNA by qPCR, far higher than that in ELISA-negative serum samples (5.26%, 2/38). This report is the first to demonstrate that CanineCV infection is common in the dog population in northeastern China. The results showed obvious differences in the positive rate associated with diarrhea, age, but not with different cities. This study also provide basis for evaluating the pathogenic potential of CanineCV. But, the pathogenicity, the relationship between antibody level and immune protection, and the harmful effects of this virus remain to be established.
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Affiliation(s)
- Zheng Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yunjia Shi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yu Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Lili Zhao
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Xingyang Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Shanshan Wen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Hanghang Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Harbin, China
| | - Hongyan Chen
- State Key Laboratory of Veterinary Biotechnology, Heilongjiang Provincial Key Laboratory of Laboratory Animal and Comparative Medicine, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Junwei Ge
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Harbin, China
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8
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Li L, Xue B, Sun W, Gu G, Hou G, Zhang L, Wu C, Zhao Q, Zhang Y, Zhang G, Hiscox JA, Nan Y, Zhou EM. Recombinant MYH9 protein C-terminal domain blocks porcine reproductive and respiratory syndrome virus internalization by direct interaction with viral glycoprotein 5. Antiviral Res 2018; 156:10-20. [PMID: 29879459 DOI: 10.1016/j.antiviral.2018.06.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 06/01/2018] [Accepted: 06/01/2018] [Indexed: 01/02/2023]
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is one of the most economically important infectious diseases impacting the swine industry worldwide. Prevention and control of PRRS have been problematic, as vaccination has achieved little success. MYH9 (encoded by the gene MYH9) is an essential cellular factor for PRRS virus (PRRSV) infection. The MYH9 C-terminal domain (designated PRA) interacts with viral glycoprotein 5 (GP5), a major PRRSV envelope protein. In this study, we investigated whether soluble PRA could serve as a novel blocking agent of PRRSV infection. Our data showed that preincubation of PRRSV with PRA inhibited virus infection of susceptible cells in a dose-dependent manner. Notably, PRA also exhibited broad-spectrum ability to inhibit infection with diverse strains of both PRRSV genotype 1 and 2. Analysis of the interaction between PRA and PRRSV GP5 revealed that PRA is able to capture PRRSV virions. In conclusion, our data suggest that PRA could serve as a novel broad-spectrum inhibitor of infection by heterogeneous PRRSV strains in vivo.
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Affiliation(s)
- Liangliang Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Biyun Xue
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Weiyao Sun
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Guoqian Gu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Gaopeng Hou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Lu Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Chunyan Wu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Qin Zhao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - Yanjin Zhang
- Molecular Virology Laboratory, VA-MD College of Veterinary Medicine and Maryland Pathogen Research Institute, University of Maryland, College Park, MD, USA.
| | - Gaiping Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, China.
| | - Julian A Hiscox
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, L3 5RF, UK.
| | - Yuchen Nan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
| | - En-Min Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China; Scientific Observing and Experimental Station of Veterinary Pharmacology and Diagnostic Technology, Ministry of Agriculture, Yangling, Shaanxi, China.
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9
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Ge J, Cui X, Shi Y, Zhao L, Wei C, Wen S, Xia S, Chen H. Development and application of an indirect enzyme-linked immunosorbent assay based on recombinant capsid protein for the detection of mink circovirus infection. BMC Vet Res 2018; 14:29. [PMID: 29373971 PMCID: PMC5787310 DOI: 10.1186/s12917-018-1337-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 01/04/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Mink circovirus (MiCV) is a newly discovered pathogen associated with mink diarrhea. The prevalence and economic importance of this virus remain poorly understood, and no specific serological assay has been developed for the diagnosis of MiCV infection. RESULTS In this study, a recombinant capsid protein antigen expressed in Escherichia coli was utilized to establish an indirect enzyme-linked immunosorbent assay (iELISA). Results revealed that the assay had no cross-reactivity with other related pathogens, and the respective sensitivity and specificity of the proposed iELISA were 92.31% and 91.67% compared with those obtained of Western blot on 138 serum samples from minks. The correlation coefficient between iELISA and Western blot was 0.838 (p > 0.05). iELISA was applied to detect MiCV antibodies in 683 clinical serum samples from different farms from the major mink industry province in China, and 21 of 24 farms with 163 of 683 (23.87%) individuals were tested positive for MiCV antibodies. The positive rates of each of the 21 flocks ranged from 2.33% to 73.68%. CONCLUSIONS These results indicated that iELISA was a sensitive and specific method suitable for the large-scale detection of MiCV infections in mink. This study provided an effective method for the serological diagnosis and positive rate investigation of MiCV infection.
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Affiliation(s)
- Junwei Ge
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China.,Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Harbin, 150030, China
| | - Xingyang Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Yunjia Shi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Lili Zhao
- Laboratory Animal and Comparative Medicine Unit, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, No. 678 Haping Rd, Harbin, 150069, China
| | - Chengwei Wei
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Shanshan Wen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Shuang Xia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Hongyan Chen
- Laboratory Animal and Comparative Medicine Unit, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, No. 678 Haping Rd, Harbin, 150069, China.
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10
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Niu Y, Wang D, Cui L, Wang B, Pang X, Yu P. Monoclonal antibody-based colloid gold immunochromatographic strip for the rapid detection of Tomato zonate spot tospovirus. Virol J 2018; 15:15. [PMID: 29347937 PMCID: PMC5774153 DOI: 10.1186/s12985-018-0919-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 01/02/2018] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Tomato zonate spot virus (TZSV), a new species of genus Tospovirus, caused significant losses in yield and problems in quality of many important vegetables and ornamentals in Southwest China and posed a serious threat to important economic crops for the local farmers. A convenient and reliable method was urgently needed for rapid detection and surveillance of TZSV. METHODS The nucleocapsid protein (N) of TZSV was expressed in Escherichia coli and purified, and was used as the antigen to immunize BALB/c mice. Three monoclonal antibodies (mAbs) 3A2, 5D2 and 5F7 against TZSV were obtained through the hybridoma technique. The mAb 3A2 was conjugated with colloid gold as detecting reagent; mAb 5D2 was coated on a porous nitrocellulose membrane as the detection line and protein A was coated as the control line respectively. The colloid gold immunochromatographic (GICA) strip was assembled. RESULTS The analysis of Dot-ELISA and Western blot showed that the obtained three independent lines of mAbs 3A2, 5D2 and 5F7 specifically recognized TZSV N. Based on the assembly of GICA strip, the detection of TZSV was achieved by loading the infected sap onto the test strip for visual inspection. The analysis could be completed within 5-10 min. No cross-reaction occurred between TZSV and other tested viruses. The visual detection limit of the test strip for TZSV was 800 fold dilutions of TZSV-infected leaf samples. CONCLUSION The mAbs were specific and the colloidal GICA strip developed in this study was convenient, fast and reliable for the detection of TZSV. The method could be applied for the rapid diagnosis and surveillance of TZSV in the field.
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Affiliation(s)
- Yanbing Niu
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030801 China
| | - Defu Wang
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030801 China
| | - Liyan Cui
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030801 China
| | - Baoxia Wang
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030801 China
| | - Xiaojing Pang
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030801 China
| | - Peixia Yu
- College of Life Sciences, Shanxi Agricultural University, Taigu, 030801 China
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Guo DL, Pan QW, Li KP, Li JQ, Shen HW, Wang XL, Zhang XY, Li XS, Fu F, Feng L, Li X. Development and clinical evaluation of a new gold-immunochromatographic assay for the detection of antibodies against field strains of pseudorabies virus. J Virol Methods 2015; 222:164-9. [PMID: 26141732 DOI: 10.1016/j.jviromet.2015.06.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/25/2015] [Accepted: 06/28/2015] [Indexed: 11/26/2022]
Abstract
An immunochromatographic strip (ICS) was developed for the detection of swine antibodies against glycoprotein E (gE) in Pseudorabies Virus (PRV). In this test, Staphylococcal Protein A (SPA) labeled with colloidal gold was dispensed on a conjugate pad as the detector. Purified PRV-gE and pig-IgG were blotted on a nitrocellulose membrane for the test (T) and control lines (C), respectively. If the tested serum contains IgG antibodies against PRV-gE, the IgG will interact with the colloidal gold-SPA to form a complex (gold-SPA-swine IgG). The complex will react with the immobilized PRV-gE on the T line and the Pig-IgG in the C line of the ICS to form two visible red bands. If there is no IgG antibody against PRV-gE in the sample serum, only the C line will be visible. The ICS was capable of specifically detecting PRV-gE antibody within 5 min, and its stability and reproducibility were quite good after storage at 4°C and use within 4 months. Using an IDEXX Pseudorabies Virus gE Antibody Test Kit (IDEXX PRV gE Ab test) as a reference, the relative specificity and sensitivity of the ICS were determined to be 81.6% and 90.7%, respectively. Furthermore, there was a good agreement between the results obtained by the commercial product and the ICS (kappa=0.7289).
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Affiliation(s)
- Dian-lei Guo
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Qi-wei Pan
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Kun-peng Li
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Jun-qing Li
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Han-wei Shen
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Xiang-ling Wang
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Xun-yun Zhang
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Xue-song Li
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Fang Fu
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Li Feng
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China
| | - Xi Li
- Division of Swine Infectious Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan St., Nangang District, Harbin 150001, China.
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12
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A novel immunochromatographic test applied to a serological survey of Japanese encephalitis virus on pig farms in Korea. PLoS One 2015; 10:e0127313. [PMID: 25992769 PMCID: PMC4439121 DOI: 10.1371/journal.pone.0127313] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 04/13/2015] [Indexed: 12/15/2022] Open
Abstract
Among vertebrate species, pigs are a major amplifying host of Japanese encephalitis virus (JEV) and measuring their seroconversion is a reliable indicator of virus activity. Traditionally, the hemagglutination inhibition test has been used for serological testing in pigs; however, it has several limitations and, thus, a more efficient and reliable replacement test is required. In this study, we developed a new immunochromatographic test for detecting antibodies to JEV in pig serum within 15 min. Specifically, the domain III region of the JEV envelope protein was successfully expressed in soluble form and used for developing the immunochromatographic test. The test was then applied to the surveillance of Japanese encephalitis (JE) in Korea. We found that our immunochromatographic test had good sensitivity (84.8%) and specificity (97.7%) when compared with an immunofluorescence assay used as a reference test. During the surveillance of JE in Korea in 2012, the new immunochromatographic test was used to test the sera of 1,926 slaughtered pigs from eight provinces, and 228 pigs (11.8%) were found to be JEV-positive. Based on these results, we also produced an activity map of JEV, which marked the locations of pig farms in Korea that tested positive for the virus. Thus, the immunochromatographic test reported here provides a convenient and effective tool for real-time monitoring of JEV activity in pigs.
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Qian K, Liang YZ, Yin LP, Shao HX, Ye JQ, Qin AJ. Development and evaluation of an immunochromatographic strip for rapid detection of capsid protein antigen p27 of avian leukosis virus. J Virol Methods 2015; 221:115-8. [PMID: 25977186 DOI: 10.1016/j.jviromet.2015.04.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 04/23/2015] [Accepted: 04/30/2015] [Indexed: 10/23/2022]
Abstract
A rapid immunochromatographic strip for detecting capsid protein antigen p27 of avian leukosis virus was successfully developed based on two high-affinity monoclonal antibodies. The test strip could detect not only 600pg purified recombinant p27 protein but also quantified avian leukosis virus as low as 70 TCID50, which has comparative sensitivity to the commercial enzyme-linked immunosorbent assay (ELISA) kit. For the evaluation of this test strip, 1100 samples consisting of cloacal swabs, meconium collected from the earliest stool of one day old chicken and virus isolates were assessed both by the strip and by the commercial ELISA kit. The agreement between these two tests was 93.91%, 93.42% and 100%, respectively. The sensitivity and specificity of the strip were also calculated by using the ELISA kit as the standard. This immunochromatographic strip provides advantages of rapid and simple detection of capsid protein antigen p27 of avian leukosis virus, which could be applied as an on-site testing assay and used for control and eradication programs of avian leukosis disease.
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Affiliation(s)
- Kun Qian
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
| | - You-zhi Liang
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou 225009, China
| | - Li-ping Yin
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou 225009, China
| | - Hong-xia Shao
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
| | - Jian-qiang Ye
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
| | - Ai-jian Qin
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Jiangsu Preventive Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China.
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Use of recombinant nucleocapsid proteins for serological diagnosis of feline coronavirus infection by three immunochromatographic tests. J Virol Methods 2014; 196:1-6. [PMID: 24516876 PMCID: PMC7113643 DOI: 10.1016/j.jviromet.2013.10.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Three types of immunochromatographic assays (ICAs) were designed to detect anti-feline coronavirus (FCoV) antibodies. Recombinant FCoV nucleocapsid protein (rNP) was used as a conjugate or test line in all 3 ICA kits (CJIgG/TNP, CJNP/TNP, and CJNP/TPA). All three ICA kits were capable of detecting anti-FCoV antibodies; however, non-specific positive reactions of anti-FCoV antibody-negative plasma samples with the test line were observed in 2 ICA kits (CJIgG/TNP and CJNP/TNP), in which rNP was used as the test line. On the other hand, the specific detection of anti-FCoV antibodies was possible in all plasma, serum, whole blood, and ascitic fluid samples using the ICA kit with protein A blotted as the test line (CJNP/TPA). In addition, the specificity and sensitivity of ICA (CJNP/TPA) were equivalent to those of the reference ELISA. The development of simple antibody test methods using the principle of ICA (CJNP/TPA) for other coronavirus and feline viral infections is expected in the future.
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