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Liu J, Wang X, Ren T, Qin J, Qin Y, Ouyang K, Chen Y, Huang W, Wei Z. Identification of B-cell epitope on the N protein of type 1 Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) using monoclonal antibody and construction of epitope-mutated virus. Virology 2024; 596:110102. [PMID: 38749084 DOI: 10.1016/j.virol.2024.110102] [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: 02/26/2024] [Revised: 04/29/2024] [Accepted: 05/02/2024] [Indexed: 06/15/2024]
Abstract
The escalating epidemic of PRRSV-1 in China has prompted widespread concern regarding the evolution of strains, disparities in pathogenicity to herds, and immunological detection of emerging strains. The nucleocapsid (N) protein, as a highly conserved protein with immunogenic properties in PRRSV, is a subject of intensive study. In this research, the recombinant His-N protein was expressed based on the N gene of PRRSV-1 using a prokaryotic expression system and then administered to BALB/c mice. A cell fusion protocol was implemented between SP2/0 cells and splenocytes, resulting in the successful screening of a monoclonal antibody against the N protein, designated as mAb 2D7, by indirect ELISA. Western Blot analysis and Indirect Immunofluorescence Assay (IFA) confirmed that mAb 2D7 positively responded to PRRSV-1. By constructing and expressing a series of truncated His-fused N proteins, a B-cell epitope of N protein, 59-AAEDDIR-65, was identified. A sequence alignment of two genotypes of PRRSV revealed that this epitope is relatively conserved in PRRSV, yet more so in genotype 1. Cross-reactivity analysis by Western blot analysis demonstrated that the B-cell epitope containing D62Y mutation could not be recognized by mAb 2D7. The inability of mAb 2D7 to recognize the epitope carrying the D62Y mutation was further determined using an infectious clone of PRRSV. This research may shed light on the biological significance of the N protein of PRRSV, paving the way for the advancement of immunological detection and development of future recombinant marker vaccine.
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Affiliation(s)
- Jiaqi Liu
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China
| | - Xindong Wang
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China
| | - Tongwei Ren
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China
| | - Jianguang Qin
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China
| | - Yifeng Qin
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, 530005, China
| | - Kang Ouyang
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, 530005, China
| | - Ying Chen
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, 530005, China
| | - Weijian Huang
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, 530005, China
| | - Zuzhang Wei
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, 530005, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, 530005, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, 530005, China.
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Jin W, Zhang Y, Su X, Wang R, Xie Z, Wang Y, Qiu Y. Development of Colloidal Gold Immunochromatography and Reverse-Transcription Loop-Mediated Isothermal Amplification Assays to Detect Lychnis Mottle Virus. PLANT DISEASE 2023:PDIS08221970RE. [PMID: 36383991 DOI: 10.1094/pdis-08-22-1970-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Lychnis mottle virus (LycMoV; genus Unassigned, family Secoviridae) infection of Angelica sinensis produces mottle and mosaic symptoms, damaging the host. Early detection of relevant pathogens is the most critical step in preventing the potential transmission of infectious disease. Polyclonal antibodies with high potency and high specificity were prepared using the recombinant LycMoV capsid protein as an antigen. Here, we developed and optimized a rapid colloidal gold immunochromatography assay (GICA) detection system for LycMoV using this antibody. Under optimum conditions, GICA specifically detected (up to 10,000-fold) positive LycMoV samples. A real-time reverse-transcription loop-mediated isothermal amplification (RT-LAMP) system was also established by selecting the primers with high sensitivity and specificity to LycMoV. The RT-LAMP detection threshold was 1.42 fg/μl (291 copies/μl). A GICA-RT-LAMP assay system was further established and optimized. The minimum GICA detection line was calculated at 1.52 × 10-2 ng/μl. Although GICA did not detect positive samples after capturing virus at 2.53 × 10-3 ng/μl, GICA-LAMP and GICA-RT-PCR did, whose sensitivity was comparatively greater than sixfold. This is the first report showing that GICA-RT-LAMP is a cost-effective approach for use in detecting LycMoV without extracting nucleic acids. These sensitive assays will help improve virus disease management in A. sinensis crops.
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Affiliation(s)
- Weijie Jin
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Lanzhou 730000, China
| | - Yubao Zhang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Lanzhou 730000, China
| | - Xuesi Su
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Lanzhou 730000, China
| | - Ruoyu Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Lanzhou 730000, China
| | - Zhongkui Xie
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Lanzhou 730000, China
| | - Yajun Wang
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Lanzhou 730000, China
| | - Yang Qiu
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Lanzhou 730000, China
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Zhang C, Zhao J, Wang W, Geng H, Wang Y, Gao B. Current advances in the application of nanomedicine in bladder cancer. Biomed Pharmacother 2023; 157:114062. [PMID: 36469969 DOI: 10.1016/j.biopha.2022.114062] [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: 11/01/2022] [Revised: 11/22/2022] [Accepted: 12/01/2022] [Indexed: 12/03/2022] Open
Abstract
Bladder cancer is the most common malignant tumor of the urinary system, however there are several shortcomings in current diagnostic and therapeutic measures. In terms of diagnosis, the diagnostic tools currently available are not sufficiently sensitive and specific, and imaging is poor, leading to misdiagnosis and missed diagnoses, which can delay treatment. In terms of treatment, current treatment options include surgery, chemotherapy, immunotherapy, gene therapy, and other emerging treatments, as well as combination therapies. However, the main reasons for poor efficacy and side effects during treatment are the lack of specificity and targeting, improper dose control of drugs and photosensitizers, damage to normal cells while attacking cancer cells, and difficulty in delivering siRNA to cancer cells. Nanomedicine is an emerging approach. Among the many nanotechnologies applied in the medical field, nanocarrier-assisted drug delivery systems have attracted extensive research interest due to their great translational value. Well-designed nanoparticles can deliver agents or drugs to specific cell types within target organs through active targeting or passive targeting (enhanced permeability and retention), which allows for imaging, diagnosis, as well as treatment of cancer. This paper reviews advances in the application of various nanocarriers and their advantages and drawbacks, with a focus on their use in the diagnosis and treatment of bladder cancer.
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Affiliation(s)
- Chi Zhang
- Department of Urology, The First Hospital of Jilin University, Changchun 130021, China
| | - Jiang Zhao
- Department of Urology, The First Hospital of Jilin University, Changchun 130021, China
| | - Weihao Wang
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun 130021, China
| | - Huanhuan Geng
- Department of Urology, The First Hospital of Jilin University, Changchun 130021, China
| | - Yinzhe Wang
- Department of Urology, The First Hospital of Jilin University, Changchun 130021, China
| | - Baoshan Gao
- Department of Urology, The First Hospital of Jilin University, Changchun 130021, China.
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Guo Y, Wu W, Zhang X, Ding M, Yu J, Zhang J, Jia MA, Tian Y. Triplex Immunostrip Assay for Rapid Diagnosis of Tobacco Mosaic Virus, Tobacco Vein Banding Mosaic Virus, and Potato Virus Y. PLANT DISEASE 2022; 106:3033-3039. [PMID: 35612580 DOI: 10.1094/pdis-08-21-1756-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Mixed virus infection has increasingly become a problem in the production of Solanaceae crops in recent years; therefore, a fast and accurate detection method is needed. In this study, a novel triplex immunostrip assay was developed for the simultaneous detection of tobacco mosaic virus (TMV), tobacco vein banding mosaic virus (TVBMV), and potato virus Y (PVY). The limits of detection of this novel immunostrip reached 200 ppb (ng/ml), 1 ppm (µg/ml), and 2 ppm for TMV, PVY, and TVBMV particles, respectively. Importantly, no cross-reactivity was observed among TMV, TVBMV, and PVY or to a nontarget virus. When the assay was applied to suspected virus-infected tobacco, tomato, and potato samples collected from fields in Southwest China, samples of single or mixed virus infection were successfully identified. In conclusion, the triplex immunostrip assay provides a fast and easy to use on-site detection method for field epidemiological studies of TMV, TVBMV, and PVY, and for managing diseases that are caused by them.
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Affiliation(s)
- Yushuang Guo
- Key Laboratory of Molecular Genetics, Guizhou Academy of Tobacco Science, Guiyang-550081, China
| | - Wei Wu
- Department of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou-350002, China
| | - Xiaolian Zhang
- Key Laboratory of Molecular Genetics, Guizhou Academy of Tobacco Science, Guiyang-550081, China
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences, Guizhou University, Guiyang-550081, China
| | - Ming Ding
- Biotechnology and Germplasm Resource Institute, Yunnan Academy of Agricultural Sciences, Kunming, China; Key Laboratory of Molecular Genetics, Guizhou Academy of Tobacco Science, Guiyang-550081, China
| | - Jing Yu
- Key Laboratory of Molecular Genetics, Guizhou Academy of Tobacco Science, Guiyang-550081, China
| | - Jie Zhang
- Key Laboratory of Molecular Genetics, Guizhou Academy of Tobacco Science, Guiyang-550081, China
| | - Meng-Ao Jia
- Key Laboratory of Molecular Genetics, Guizhou Academy of Tobacco Science, Guiyang-550081, China
| | - Yanping Tian
- Department of Plant Protection, Shandong Agriculture University, Taian-271018, China
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Development of Comprehensive Serological Techniques for Sensitive, Quantitative and Rapid Detection of Soybean mosaic virus. Int J Mol Sci 2022; 23:ijms23169457. [PMID: 36012722 PMCID: PMC9409097 DOI: 10.3390/ijms23169457] [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: 07/11/2022] [Revised: 08/09/2022] [Accepted: 08/18/2022] [Indexed: 11/16/2022] Open
Abstract
Soybean is an important grain and oil crop worldwide; however, the yield and seed quality of which are seriously affected by Soybean mosaic virus (SMV). As efficient detection technology is crucial for the field management of SMV, novel immunological detection methods were developed in the present study. According to the phylogenetic analysis, the CP coding sequence of SMV-SC7 was selected for the prokaryotic expression of the recombinant SMV-CP. Purified SMV-CP was used for the development of polyclonal antibodies (PAb) against the SMV-CP (PAb-SMV-CP) and monoclonal antibodies (MAb) against SMV-CP (MAb-SMV-CP). Subsequently, the PAb-SMV-CP was used for the development of a novel DAS- quantitative ELISA (DAS-qELISA) kit, of which the sensitivity was greater than 1:4000, and this could be used for the quantitative detection of SMV in China. Meanwhile, the MAb-SMV-CP was labeled with colloidal gold, and then was used for the development of the SMV-specific gold immunochromatography strip (SMV-GICS). The SMV-GICS gives accurate detection results through observed control lines and test lines in 5 to 10 min, sharing the same sensitivity as RT-PCR, and can be used for rapid, accurate and high-throughput field SMV detection. The DAS-qELISA kit and the SMV-GICA strip developed in this study are SMV-specific, sensitive, cheap and easy to use. These products will be conducive to the timely, efficient SMV epidemiology and detection in major soybean-producing regions in China and abroad.
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Tomato zonate spot virus induced hypersensitive resistance via an auxin-related pathway in pepper. Gene 2022; 823:146320. [PMID: 35218893 DOI: 10.1016/j.gene.2022.146320] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 12/28/2021] [Accepted: 02/11/2022] [Indexed: 11/20/2022]
Abstract
Tomato zonate spotvirus (TZSV) often incurs significant losses in many food and ornamental crops in Yunnan province, China, and the surrounding areas. The pepper (Capsicum chinensePI152225)can develop hypersensitive resistance following infection with TZSV, through an as yet unknown mechanism. The transcriptome dataset showed a total of 45.81 GB of clean data were obtained from six libraries, and the average percentage of the reads mapped to the pepper genome was over 90.00 %. A total of 1403 differentially expressed genes (DEGs) were obtained after TZSV infection, including 825significantly up-regulated genes and 578 down-regulated genes. The Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses indicated that most up-regulated DEGs were involved in basal defenses. RT-qPCR, and virus induced gene silencing (VIGS) were used preliminarily to identifyBBC_22506 and BBC_18917, among total of 71 differentially expressed genes (DEGs), that play a key role in mediating the auxin-induced signaling pathway that might take part in hypersensitive response (HR) conferred resistance to viral infection in pepper (PI152225) byTZSV. This is the first study on the mechanism of auxin resistance, involved in defense responses of pepper against viral diseases, which lay the foundation for further study on the pathogenic mechanism of TZSV, as well as the mechanism of resistance to TZSV, in peppers.
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Li J, Chen S, Qiu RS, Zhang LZ, Chen Y, Zheng X, Li TT, Zhao LH, Zhang ZK. Functional analysis of the nonstructural protein NSs of tomato zonate spot virus. PLoS One 2022; 17:e0262194. [PMID: 35073345 PMCID: PMC8786149 DOI: 10.1371/journal.pone.0262194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 12/20/2021] [Indexed: 11/19/2022] Open
Abstract
Tomato zonate spot virus (TZSV), a member of the genus orthotospovirus, causes severe damage to vegetables and ornamental crops in southwest China. The NSs protein is an RNA silencing suppressor in various orthotospovirus like TZSV, but its mechanism and role in virus infection are poorly understood. Here, we observed that an NSs-GFP fusion protein was transiently expressed on the plasma membrane and Golgi bodies in Nicotiana benthamiana plants. The TZSV NSs gene was silenced and infiltrated into N. benthamiana and N. tabacum cv. K326. RT-qPCR and Indirect enzyme-linked immunosorbent assay (ID-ELISA) showed that the transcription and the protein expression of the NSs gene were inhibited by more than 90.00%, and the symptoms on silenced plants were alleviated. We also found that the expression of the Zingipain-2-like gene significantly decreased when the NSs gene was silenced, resulting in co-localization of the NSs-GFP and the Zingipain-2-like-mCherry fusion protein. The findings of this study provide new insights into the mechanism of silencing suppression by NSs, as well as its effect on systemic virus infection, and also support the theory of disease resistance breeding and control and prevention of TZSV in the field.
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Affiliation(s)
- Jing Li
- Life Science College, Southwest Forestry University, Kunming, China
| | - Si Chen
- Life Science College, Southwest Forestry University, Kunming, China
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Run-Shuang Qiu
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Li-Zhen Zhang
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Yue Chen
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Xue Zheng
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Ting-Ting Li
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Li-Hua Zhao
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Zhong-Kai Zhang
- Yunnan Provincial Key Lab of Agricultural Biotechnology, Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming, China
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Xiao Y, Yang F, Liu F, Yao H, Wu N, Wu H. Antigen-capture ELISA and immunochromatographic test strip to detect the H9N2 subtype avian influenza virus rapidly based on monoclonal antibodies. Virol J 2021; 18:198. [PMID: 34600550 PMCID: PMC8487345 DOI: 10.1186/s12985-021-01671-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 09/23/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND The H9N2 subtype of avian influenza virus (AIV) has become the most widespread subtype of AIV among birds in Asia, which threatens the poultry industry and human health. Therefore, it is important to establish methods for the rapid diagnosis and continuous surveillance of H9N2 subtype AIV. METHODS In this study, an antigen-capture enzyme-linked immunosorbent assay (AC-ELISA) and a colloidal gold immunochromatographic test (ICT) strip using monoclonal antibodies (MAbs) 3G4 and 2G7 were established to detect H9N2 subtype AIV. RESULTS The AC-ELISA method and ICT strip can detect H9N2 subtype AIV quickly, and do not cross-react with other subtype AIVs or other viruses. The detection limit of AC-ELISA was a hemagglutinin (HA) titer of 4 for H9N2 subtype AIV per 100 μl sample, and the limit of detection of the HA protein of AIV H9N2 was 31.5 ng/ml. The ICT strip detection limit was an HA titer of 4 for H9N2 subtype AIV per 100 μl sample. Moreover, both detection methods exhibited good reproducibility and repeatability, with coefficients of variation < 5%. For detection in 200 actual poultry samples, the sensitivities and specificities of AC-ELISA were determined as 93.2% and 98.1%, respectively. The sensitivities and specificities of the ICT strips were determined as 90.9% and 97.4%, respectively. CONCLUSIONS The developed AC-ELISA and ICT strips displayed high specificity, sensitivity, and stability, making them suitable for rapid diagnosis and field investigation of H9N2 subtype AIV.
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Affiliation(s)
- Yixin Xiao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, Zhejiang, China
| | - Fan Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, Zhejiang, China
| | - Fumin Liu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, Zhejiang, China
| | - Hangping Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, Zhejiang, China
| | - Nanping Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, Zhejiang, China
| | - Haibo Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qingchun Road, Hangzhou, 310003, Zhejiang, China.
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Xiao Y, Yang F, Liu F, Cheng L, Yao H, Wu N, Wu H. Development of an antigen-ELISA and a colloidal gold-based immunochromatographic strip based on monoclonal antibodies for detection of avian influenza A(H5) viruses. J Vet Diagn Invest 2021; 33:969-974. [PMID: 34166136 DOI: 10.1177/10406387211027538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Avian influenza A(H5) viruses (avian IAVs) pose a major threat to the economy and public health. We developed an antigen-ELISA (ag-ELISA) and a colloidal gold-based immunochromatographic strip for the rapid detection of avian A(H5) viruses. Both detection methods displayed no cross-reactivity with other viruses (e.g., other avian IAVs, infectious bursal disease virus, Newcastle disease virus, infectious bronchitis virus, avian paramyxovirus). The ag-ELISA was sensitive down to 0.5 hemagglutinin (HA) units/100 µL of avian A(H5) viruses and 7.5 ng/mL of purified H5 HA proteins. The immunochromatographic strip was sensitive down to 1 HA unit/100 µL of avian A(H5) viruses. Both detection methods exhibited good reproducibility with CVs < 10%. For 200 random poultry samples, the sensitivity and specificity of the ag-ELISA were 92.6% and 98.8%, respectively, and for test strips were 88.9% and 98.3%, respectively. Both detection methods displayed high specificity, sensitivity, and stability, making them suitable for rapid detection and field investigation of avian A(H5) viruses.
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Affiliation(s)
- Yixin Xiao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Fan Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Fumin Liu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Linfang Cheng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Hangping Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Nanping Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Haibo Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, and National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Current Developments and Challenges in Plant Viral Diagnostics: A Systematic Review. Viruses 2021; 13:v13030412. [PMID: 33807625 PMCID: PMC7999175 DOI: 10.3390/v13030412] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/10/2021] [Accepted: 02/18/2021] [Indexed: 12/24/2022] Open
Abstract
Plant viral diseases are the foremost threat to sustainable agriculture, leading to several billion dollars in losses every year. Many viruses infecting several crops have been described in the literature; however, new infectious viruses are emerging frequently through outbreaks. For the effective treatment and prevention of viral diseases, there is great demand for new techniques that can provide accurate identification on the causative agents. With the advancements in biochemical and molecular biology techniques, several diagnostic methods with improved sensitivity and specificity for the detection of prevalent and/or unknown plant viruses are being continuously developed. Currently, serological and nucleic acid methods are the most widely used for plant viral diagnosis. Nucleic acid-based techniques that amplify target DNA/RNA have been evolved with many variants. However, there is growing interest in developing techniques that can be based in real-time and thus facilitate in-field diagnosis. Next-generation sequencing (NGS)-based innovative methods have shown great potential to detect multiple viruses simultaneously; however, such techniques are in the preliminary stages in plant viral disease diagnostics. This review discusses the recent progress in the use of NGS-based techniques for the detection, diagnosis, and identification of plant viral diseases. New portable devices and technologies that could provide real-time analyses in a relatively short period of time are prime important for in-field diagnostics. Current development and application of such tools and techniques along with their potential limitations in plant virology are likewise discussed in detail.
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Lei Q, Zhao L, Ye S, Sun Y, Xie F, Zhang H, Zhou F, Wu S. Rapid and quantitative detection of urinary Cyfra21-1 using fluorescent nanosphere-based immunochromatographic test strip for diagnosis and prognostic monitoring of bladder cancer. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2020; 47:4266-4272. [PMID: 31842631 DOI: 10.1080/21691401.2019.1687491] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Bladder cancer is a common malignant tumour with high recurrence rate. Cytokeratin 19 fragments (Cyfra21-1) in urine has been regarded as a promising biomarker for the prognosis and diagnosis of bladder cancer due to the relevance of its high urinary level to the bladder cancer patients. However, currently detection methods of Cyfra21-1 have their limits, such as complicated steps, limited sensitivity or unsatisfying specificity. In this study, we developed a novel time-resolved fluoroimmuno test strip by using europium chelate microparticle (Eu-CM). Detection was performed in simple steps by carrying drops of sample into the well of the test strip, waiting for 15 min and inserting the strip into a fluorescence strip reader for quantitation. The standard curve equation of the test strip was y = 0.0177x + 0.01 (R2 = .9993). In the analysis of human urine samples (n = 115), it demonstrated a good performance (accuracy: CV < 10%, AUC: 0.989). With the cut-off value of 81 ng/mL, the sensitivity and specificity for bladder cancer were 92.86 and 100%, respectively. In comparison to ELISA and electrochemiluminescence methods, the Eu-CM based time-resolved fluoroimmuno test strip provided a rapid, sensitive and reliable method for monitoring bladder cancer. It may be applied as a non-invasive approach for in point-of-care for bladder cancer detection.
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Affiliation(s)
- Qifang Lei
- Third Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,Institute of Urinary Surgery, Shenzhen University, Shenzhen, Guangdong, China.,Shenzhen Following Precision Medical Research Institute, Shenzhen, Guangdong, China.,Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
| | - Linlin Zhao
- Third Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,Hongqi Hospital, Mudanjiang Medical College, Mudanjiang, Heilongjiang, China
| | - Shuixian Ye
- Shenzhen Following Precision Medical Research Institute, Shenzhen, Guangdong, China
| | - Yue Sun
- Third Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,Shenzhen Following Precision Medical Research Institute, Shenzhen, Guangdong, China
| | - Fangjie Xie
- Hongqi Hospital, Mudanjiang Medical College, Mudanjiang, Heilongjiang, China
| | - Hong Zhang
- Hongqi Hospital, Mudanjiang Medical College, Mudanjiang, Heilongjiang, China
| | - Fangjian Zhou
- Third Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,Department of Urology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China
| | - Song Wu
- Third Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China.,Institute of Urinary Surgery, Shenzhen University, Shenzhen, Guangdong, China.,Shenzhen Following Precision Medical Research Institute, Shenzhen, Guangdong, China
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12
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Chao M, Liu L, Song S, Wu X, Kuang H. Development of a gold nanoparticle-based strip assay for detection of clopidol in the chicken. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1737655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Mengjia Chao
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Liqiang Liu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Shanshan Song
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Xiaoling Wu
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
| | - Hua Kuang
- State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
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13
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Li Z, Zhao F, Tang T, Wang M, Yu X, Wang R, Li Y, Xu Y, Tang L, Wang L, Zhou H, Jiang Y, Cui W, Qiao X. Development of a Colloidal Gold Immunochromatographic Strip Assay for Rapid Detection of Bovine Rotavirus. Viral Immunol 2019; 32:393-401. [PMID: 31596683 DOI: 10.1089/vim.2019.0071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Bovine rotavirus (BRV) is one of main pathogens responsible for diarrhea, fever, and vomiting. In this study, we developed a colloidal gold immunochromatographic test strip for detecting BRV according to the principle of double-antibody sandwich. The monoclonal antibodies (mAbs) and polyclonal antibodies (pAbs) were prepared and purified. On the strip, the purified mAbs labeled with the colloidal gold were used as the detector, and the goat anti-mouse antibodies and purified pAbs were coated on the nitrocellulose membranes as the control line and the test line, respectively. We optimized different reaction conditions, including the amount of mAbs, the pH of colloidal gold solution, coating solution, blocking solution, sample pad treatment solution, antibody concentration in control line, and antibody concentration in detection line. In specificity assay, the strip had high specificity in detecting BRV. No cross-reaction was observed in detecting other viruses. The detection sensitivity of the strip was found to be 1 × 103 TCID50/0.1 mL. Two hundred twenty clinical samples were detected with the strip compared to reverse transcription-polymerase chain reaction. No false-negative or false-positive results were found, and the results obtained by the two methods were similar. In conclusion, we developed a novel immunochromatographic strip to rapidly detect BRV. The strip developed exhibited high sensitivity and specificity for BRV detection. It could be a rapid, convenient, and effective method for the rapid diagnosis of BRV infection in the fields.
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Affiliation(s)
- Zhenxue Li
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Feipeng Zhao
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Tingting Tang
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Mengmeng Wang
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xiaoli Yu
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Ruichong Wang
- Heilongjiang Province Center for Disease Control and Prevention, Department of Radiological Protection, Harbin, China
| | - Yijing Li
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yigang Xu
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Lijie Tang
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Li Wang
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Han Zhou
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yanping Jiang
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Wen Cui
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xinyuan Qiao
- Northeastern Science Inspection Station, China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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14
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Wu X, Xu S, Zhao P, Zhang X, Yao X, Sun Y, Fang R, Ye J. The Orthotospovirus nonstructural protein NSs suppresses plant MYC-regulated jasmonate signaling leading to enhanced vector attraction and performance. PLoS Pathog 2019; 15:e1007897. [PMID: 31206553 PMCID: PMC6598649 DOI: 10.1371/journal.ppat.1007897] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/27/2019] [Accepted: 06/05/2019] [Indexed: 11/19/2022] Open
Abstract
Pandemics of vector-borne human and plant diseases often depend on the behaviors
of their arthropod vectors. Arboviruses, including many bunyaviruses, manipulate
vector behavior to accelerate their own transmission to vertebrates, birds,
insects, and plants. However, the molecular mechanism underlying this
manipulation remains elusive. Here, we report that the non-structural protein
NSs of Tomato spotted wilt orthotospovirus, a prototype of the
Tospoviridae family and the
Orthotospovirus genus, is a key viral factor that
indirectly modifies vector preference and increases vector performance. NSs
suppresses the biosynthesis of plant volatile monoterpenes, which serve as
repellents of the vector western flower thrips (WFT, Frankliniella
occidentalis). NSs directly interacts with MYC2, the jasmonate (JA)
signaling master regulator and its two close homologs MYC3 and MYC4, to disable
JA-mediated activation of terpene synthase genes. The
dysfunction of the MYCs subsequently attenuates host defenses, increases the
attraction of thrips, and improves thrips fitness. Moreover, MYC2 associated
with NSs of Tomato zonate spot orthotospovirus, another Euro/Asian-type
orthotospovirus, suggesting that MYC2 is an evolutionarily conserved target of
Orthotospovirus species for suppression of terpene-based
resistance to promote vector performance. These findings elucidate the molecular
mechanism through which an orthotospovirus indirectly manipulates vector
behaviors and therefore facilitates pathogen transmission. Our results provide
insights into the molecular mechanisms by which Orthotospovirus
NSs counteracts plant immunity for pathogen transmission. Most bunyaviruses are transmitted by arthropod vectors, and some of them can
modify the behaviors of their arthropod vectors to increase transmission to
mammals, birds, and plants. NSs is a non-structural bunyavirus protein with
multiple functions that acts as an avirulence determinant and silencing
suppressor. In this study, we identified a new function of NSs as a conserved
manipulator of vector behavior via plant. NSs suppresses jasmonate-mediated
plant immunity against thrips by directly interacting with several homologs of
MYC transcription factors, the core regulators of the jasmonate-signaling
pathway. This hijacking by NSs enhances thrips preference and performance.
Therefore, our data support the hypothesis that MYC2 is a convergent target that
plant pathogens manipulate to promote their survival in plants.
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Affiliation(s)
- Xiujuan Wu
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
- University of the Chinese Academy of Sciences, Beijing,
China
| | - Shuang Xu
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
- University of the Chinese Academy of Sciences, Beijing,
China
| | - Pingzhi Zhao
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
| | - Xuan Zhang
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
| | - Xiangmei Yao
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
| | - Yanwei Sun
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
| | - Rongxiang Fang
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
- University of the Chinese Academy of Sciences, Beijing,
China
| | - Jian Ye
- State Key Laboratory of Plant Genomics, Institute of Microbiology,
Chinese Academy of Sciences, Beijing, China
- University of the Chinese Academy of Sciences, Beijing,
China
- * E-mail:
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15
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Chen Y, Huang Z, Hu S, Zhang G, Peng J, Xia J, Lai W. Integrated immunochromatographic assay for qualitative and quantitative detection of clenbuterol. Anal Biochem 2019; 577:45-51. [PMID: 31022377 DOI: 10.1016/j.ab.2019.04.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 01/25/2019] [Accepted: 04/16/2019] [Indexed: 01/08/2023]
Abstract
In this study, colloidal gold (CG) and time-resolved fluorescent nanobead (TRFN) probes were used to establish an integrated immunochromatographic assay (ICA) to qualitatively and quantitatively detect clenbuterol (CLE). The best experimental conditions for the two probes in separate ICAs were obtained by optimizing the antibody labeling concentration, the amount of antigen, and the concentration of probe. When the CG and TRFN probes co-existed in the ICA, the latter had no effect on the sensitivity of qualitative detection of the CG probe-based ICA. However, the CG probe optimized the linear range of quantitative detection in the TRFN probe-based ICA. The integrated test strip can be used for qualitative and quantitative detection of CLE in one step. When the amount of antigen reached 0.4 mg/mL, the CG probe concentration reached 1.2 μg/mL, and the TRFN probe concentration reached 0.68 μg/mL. The qualitative sensitivity of the integrated ICA was 0.5 ng/mL and its quantitative limit of detection was 0.04 ng/mL with a detection range of 0.1-2.7 ng/mL. This developed method is of great significance for large-scale samples screening and positive monitoring in the field of food safety testing.
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Affiliation(s)
- Yuan Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Zhen Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Song Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Ganggang Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China
| | - Jun Xia
- Jiangxi Province Institute of Veterinary Drug and Food Control, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, China.
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