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Wang Y, Pang F. Diagnosis of bovine viral diarrhea virus: an overview of currently available methods. Front Microbiol 2024; 15:1370050. [PMID: 38646626 PMCID: PMC11026595 DOI: 10.3389/fmicb.2024.1370050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 03/26/2024] [Indexed: 04/23/2024] Open
Abstract
Bovine viral diarrhea virus (BVDV) is the causative agent of bovine viral diarrhea (BVD), which results in significant economic losses in the global cattle industry. Fortunately, various diagnostic methods available for BVDV have been established. They include etiological methods, such as virus isolation (VI); serological methods, such as enzyme-linked immunosorbent assay (ELISA), immunofluorescence assay (IFA), and immunohistochemistry (IHC); molecular methods, such as reverse transcription-polymerase chain reaction (RT-PCR), real-time PCR, digital droplet PCR (ddPCR), loop-mediated isothermal amplification (LAMP), recombinase polymerase amplification (RPA), and CRISPR-Cas system; and biosensors. This review summarizes the current diagnostic methods for BVDV, discussing their advantages and disadvantages, and proposes future perspectives for the diagnosis of BVDV, with the intention of providing valuable guidance for effective diagnosis and control of BVD disease.
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Affiliation(s)
| | - Feng Pang
- Department of Veterinary Medicine, College of Animal Science, Guizhou University, Guiyang, China
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Wang L, Mi S, Madera R, Li Y, Gong W, Tu C, Shi J. A Novel Competitive ELISA for Specifically Measuring and Differentiating Immune Responses to Classical Swine Fever C-Strain Vaccine in Pigs. Viruses 2022; 14:1544. [PMID: 35891524 PMCID: PMC9315997 DOI: 10.3390/v14071544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/07/2022] [Accepted: 07/13/2022] [Indexed: 11/17/2022] Open
Abstract
Classical swine fever can be controlled effectively by vaccination with C-strain vaccine. In this study, we developed a novel competitive enzyme-linked immunosorbent assay (cELISA) based on a C-strain Erns specific monoclonal antibody (mAb 1504), aiming to serologically measure immune responses to C-strain vaccine in pigs, and finally to make the C-strain become a DIVA-compatible vaccine. The cELISA system was established based on the strategy that mAb 1504 will compete with the C-strain induced antibodies in the pig serum to bind the C-strain Erns protein. The cELISA was optimized and was further evaluated by testing different categories of pig sera. It can efficiently differentiate C-strain immunized from wild-type CSFV-infected pigs and lacks cross-reaction with other common swine viruses and viruses in genus Pestivirus such as Bovine viral diarrhea virus (BVDV). The C-strain antibody can be tested in pigs 7-14 days post vaccination with this cELISA. The sensitivity and specificity of the established cELISA were 100% (95% confidence interval: 95.60 to 100%) and 100% (95% confidence interval: 98.30 to 100%), respectively. This novel cELISA is a reliable tool for specifically measuring and differentiating immune responses to C-strain vaccine in pigs. By combining with the wild-type CSFV-specific infection tests, it can make the C-strain have DIVA capability.
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Affiliation(s)
- Lihua Wang
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
| | - Shijiang Mi
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130012, China; (S.M.); (W.G.); (C.T.)
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130012, China
| | - Rachel Madera
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
| | - Yuzhen Li
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
| | - Wenjie Gong
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130012, China; (S.M.); (W.G.); (C.T.)
| | - Changchun Tu
- Key Laboratory of Zoonoses Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun 130012, China; (S.M.); (W.G.); (C.T.)
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130012, China
| | - Jishu Shi
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
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Liu H, Shi K, Sun W, Zhao J, Yin Y, Si H, Qu S, Lu W. Development a multiplex RT-PCR assay for simultaneous detection of African swine fever virus, classical swine fever virus and atypical porcine pestivirus. J Virol Methods 2020; 287:114006. [PMID: 33127443 DOI: 10.1016/j.jviromet.2020.114006] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 02/07/2023]
Abstract
African swine fever virus (ASFV), classical swine fever virus (CSFV) and atypical porcine pestivirus (APPV) have caused considerable financial losses to the pig industry worldwide, and it is critical to achieve early and accurate diagnosis of these viruses to control the diseases induced by them. In this study, three pairs of specific primers were designed based on the highly conserved genome regions of these viruses, and a multiplex reverse transcription-polymerase chain reaction (mRT-PCR) assay for ASFV, CSFV and APPV was established after various reaction conditions were optimized. The mRT-PCR assay consisted of two steps, that is, reverse transcription (RT) and mPCR. The assay was highly specific, sensitive, and reproducible for ASFV, CSFV and APPV without cross-reaction with other swine pathogens. The sensitivity of this assay, which used purified plasmid constructs containing specific viral target fragments as templates, was 6.34 × 102 copies/μL for ASFV and 6.34 × 101 copies/μL for both CSFV and APPV. A total of 384 clinical samples from piglets suspected to be infected in Guangxi Province, Southern China, during 2018-2019 were analyzed by the established mRT-PCR method. The results showed that the positive rates of ASFV, CSFV and APPV were 43.75 %, 13.28 % and 4.17 %, respectively, and the coinfection rates of ASFV/CSFV, ASFV/APPV and CSFV/APPV were 5.47 %, 1.83 % and 1.30 %, respectively. To understand the epidemiological characteristics of APPV, the newly discovered virus, in Guangxi Province, the clinical samples from APPV-positive animals were selected randomly for amplification and sequencing, and the complete genomic sequences of four APPV strains were obtained. Phylogenetic analysis demonstrated that APPV strains from Guangxi Province had a high degree of genetic diversity. This study provides an important tool for rapid detection and accurate diagnosis of ASFV, CSFV and APPV.
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Affiliation(s)
- Huixin Liu
- College of Animal Science and Technology, Guangxi University, Nanning, 530005, China
| | - Kaichuang Shi
- Guangxi Center for Animal Disease Control and Prevention, Nanning, 530001, China.
| | - Wenchao Sun
- Institute of Virology, Wenzhou University, Wenzhou, 325035, China
| | - Jing Zhao
- College of Animal Science and Technology, Guangxi University, Nanning, 530005, China
| | - Yanwen Yin
- Guangxi Center for Animal Disease Control and Prevention, Nanning, 530001, China
| | - Hongbin Si
- College of Animal Science and Technology, Guangxi University, Nanning, 530005, China
| | - Sujie Qu
- Guangxi Center for Animal Disease Control and Prevention, Nanning, 530001, China
| | - Wenjun Lu
- Guangxi Center for Animal Disease Control and Prevention, Nanning, 530001, China
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Wang L, Madera R, Li Y, McVey DS, Drolet BS, Shi J. Recent Advances in the Diagnosis of Classical Swine Fever and Future Perspectives. Pathogens 2020; 9:pathogens9080658. [PMID: 32824178 PMCID: PMC7460108 DOI: 10.3390/pathogens9080658] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/09/2020] [Accepted: 08/13/2020] [Indexed: 11/16/2022] Open
Abstract
Classical swine fever (CSF) is a highly contagious viral disease of pigs, including wild boar. It is regarded as one of the major problems in the pig industry as it is still endemic in many regions of the world and has the potential to cause devastating epidemics, particularly in countries free of the disease. Rapid and reliable diagnosis is of utmost importance in the control of CSF. Since clinical presentations of CSF are highly variable and may be confused with other viral diseases in pigs, laboratory diagnosis is indispensable for an unambiguous diagnosis. On an international level, well-established diagnostic tests of CSF such as virus isolation, fluorescent antibody test (FAT), antigen capture antibody enzyme-linked immunosorbent assay (ELISA), reverse-transcription polymerase chain reaction (RT-PCR), virus neutralization test (VNT), and antibody ELISA have been described in detail in the OIE Terrestrial Manual. However, improved CSF diagnostic methods or alternatives based on modern technologies have been developed in recent years. This review thus presents recent advances in the diagnosis of CSF and future perspectives.
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Affiliation(s)
- Lihua Wang
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
- Correspondence: (L.W.); (J.S.); Tel.: +1-785-532-4397 (L.W.); +1-785-532-4506 (J.S.)
| | - Rachel Madera
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
| | - Yuzhen Li
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
| | - David Scott McVey
- United States Department of Agriculture, Arthropod-Borne Animal Diseases Research Unit, Center for Grain and Animal Health Research, Manhattan, KS 66502, USA; (D.S.M.); (B.S.D.)
| | - Barbara S. Drolet
- United States Department of Agriculture, Arthropod-Borne Animal Diseases Research Unit, Center for Grain and Animal Health Research, Manhattan, KS 66502, USA; (D.S.M.); (B.S.D.)
| | - Jishu Shi
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA; (R.M.); (Y.L.)
- Correspondence: (L.W.); (J.S.); Tel.: +1-785-532-4397 (L.W.); +1-785-532-4506 (J.S.)
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An improved indirect ELISA for specific detection of antibodies against classical swine fever virus based on structurally designed E2 protein expressed in suspension mammalian cells. Arch Virol 2018; 163:1831-1839. [DOI: 10.1007/s00705-018-3809-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 02/03/2018] [Indexed: 10/17/2022]
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A multiplex TaqMan real-time PCR for detection and differentiation of four antigenic types of canine parvovirus in China. Mol Cell Probes 2018; 38:7-12. [PMID: 29499233 PMCID: PMC7126752 DOI: 10.1016/j.mcp.2018.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/02/2018] [Accepted: 02/26/2018] [Indexed: 12/24/2022]
Abstract
Canine parvovirus (CPV) is an important pathogen in domestic dogs, and the original antigenic types CPV-2 and its variants, CPV-2a, 2b and 2c, are prevalent worldwide. A multiplex TaqMan real-time PCR method was developed for the detection and differentiation of four antigenic types of CPV. A set of primers and probes, CPV-305F/CPV-305R and CPV-2-305P (for CPV-2)/CPV-2a-305P (for CPV-2a, 2b and 2c), was able to differentiate CPV-2 and its variants (CPV-2a, 2b and 2c). Another set of primers and probes, CPV-426F/CPV-426R and CPV-2-426P (for CPV-2 and 2a)/CPV-2b-426P (for CPV-2b)/CPV-2c-426P (for CPV-2c), was able to differentiate CPV-2a (2), CPV-2b, and CPV-2c. With these primers and probes, the multiplex TaqMan real-time PCR assay detected effectively and differentiated CPV-2, 2a, 2b and 2c by two separate real-time PCRs. No cross reactivity was observed with canine distemper virus, canine adenovirus, and canine coronavirus. The detection limit of the assay is 101 genome copies/μL for CPV-2, CPV-2a, CPV-2b, and 102 copies/μL for CPV-2c. The multiplex real-time PCR has 100% agreement with DNA sequencing. We provide a sensitive assay that simultaneously detects and differentiate four antigenic types of CPV and the method was also used for quantification of CPVs viral genome. The Multiplex TaqMan real-time PCR can simultaneously detect and differentiate four antigenic types of CPV. The method is suit for using in detection of CPVs in China. The method showed a high specificity and sensitivity. The method was also used for quantification of CPVs viral genome.
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Li HM, Zhao ZY, Guo KK, Jiang YF, Zhang WM, Zhang YM, Liu W, Wang JY. Differentiation of virulent Shimen and vaccine C strains of classical swine fever virus by duplex reverse-transcription polymerase chain reaction. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1355263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Hai-min Li
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Zi-yin Zhao
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Kang-kang Guo
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Yan-fen Jiang
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Wei-min Zhang
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Yan-ming Zhang
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Wei Liu
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Jing-yu Wang
- Department of Prevention, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, P.R. China
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Blome S, Moß C, Reimann I, König P, Beer M. Classical swine fever vaccines-State-of-the-art. Vet Microbiol 2017; 206:10-20. [PMID: 28069290 DOI: 10.1016/j.vetmic.2017.01.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 12/24/2016] [Accepted: 01/01/2017] [Indexed: 10/20/2022]
Abstract
Due to its impact on animal health and pig industry, classical swine fever (CSF) is still one of the most important viral diseases of pigs. To control the disease, safe and highly efficacious live attenuated vaccines exist for decades. These vaccines have usually outstanding efficacy and safety but lack differentiability of infected from vaccinated animals (DIVA or marker strategy). In contrast, the first generation of E2 subunit marker vaccines shows constraints in efficacy, application, and production. To overcome these limitations, new generations of marker vaccines are developed. A wide range of approaches have been tried including recombinant vaccines, recombinant inactivated vaccines or subunit vaccines, vector vaccines, and DNA/RNA vaccines. During the last years, especially attenuated deletion vaccines or chimeric constructs have shown potential. At present, especially two new constructs have been intensively tested, the adenovirus-delivered, Semliki Forest virus replicon-vectored marker vaccine candidate "rAdV-SFV-E2" and the pestivirus chimera "CP7_E2alf". The later was recently licensed by the European Medicines Agency. Under field conditions, all marker vaccines have to be accompanied by a potent test system. Particularly this point shows still weaknesses and it is important to embed vaccination in a well-established vaccination strategy and a suitable diagnostic workflow. In summary, conventional vaccines are a standard in terms of efficacy. However, only vaccines with DIVA will allow improved eradication strategies e.g. also under emergency vaccination conditions in free regions. To answer this demand, new generations of marker vaccines have been developed and add now to the tool box of CSF control.
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Affiliation(s)
- Sandra Blome
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald, Insel Riems, Germany
| | - Claudia Moß
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald, Insel Riems, Germany
| | - Ilona Reimann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald, Insel Riems, Germany
| | - Patricia König
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald, Insel Riems, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald, Insel Riems, Germany.
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Development of an updated PCR assay for detection of African swine fever virus. Arch Virol 2016; 162:191-199. [PMID: 27714502 DOI: 10.1007/s00705-016-3069-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 09/15/2016] [Indexed: 10/20/2022]
Abstract
Due to the current unavailability of vaccines or treatments for African swine fever (ASF), which is caused by African swine fever virus (ASFV), rapid and reliable detection of the virus is essential for timely implementation of emergency control measures and differentiation of ASF from other swine diseases with similar clinical presentations. Here, an improved PCR assay was developed and evaluated for sensitive and universal detection of ASFV. Primers specific for ASFV were designed based on the highly conserved region of the vp72 gene sequences of all ASFV strains available in GenBank, and the PCR assay was established and compared with two OIE-validated PCR tests. The analytic detection limit of the PCR assay was 60 DNA copies per reaction. No amplification signal was observed for several other porcine viruses. The novel PCR assay was more sensitive than two OIE-validated PCR assays when testing 14 strains of ASFV representing four genotypes (I, V, VIII and IX) from diverse geographical areas. A total of 62 clinical swine blood samples collected from Uganda were examined by the novel PCR, giving a high agreement (59/62) with a superior sensitive universal probe library-based real-time PCR. Eight out of 62 samples tested positive, and three samples with higher Ct values (39.15, 38.39 and 37.41) in the real-time PCR were negative for ASFV in the novel PCR. In contrast, one (with a Ct value of 29.75 by the real-time PCR) and two (with Ct values of 29.75 and 33.12) ASFV-positive samples were not identified by the two OIE-validated PCR assays, respectively. Taken together, these data show that the novel PCR assay is specific, sensitive, and applicable for molecular diagnosis and surveillance of ASF.
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Rao P, Wu H, Jiang Y, Opriessnig T, Zheng X, Mo Y, Yang Z. Development of an EvaGreen-based multiplex real-time PCR assay with melting curve analysis for simultaneous detection and differentiation of six viral pathogens of porcine reproductive and respiratory disorder. J Virol Methods 2014; 208:56-62. [DOI: 10.1016/j.jviromet.2014.06.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 05/17/2014] [Accepted: 06/20/2014] [Indexed: 11/27/2022]
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Luo Y, Li S, Sun Y, Qiu HJ. Classical swine fever in China: a minireview. Vet Microbiol 2014; 172:1-6. [PMID: 24793098 DOI: 10.1016/j.vetmic.2014.04.004] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/26/2014] [Accepted: 04/01/2014] [Indexed: 11/30/2022]
Abstract
Classical swine fever (CSF), caused by Classical swine fever virus (CSFV), is an OIE-listed, highly contagious, often fatal disease of swine worldwide. Currently, the disease is controlled by prophylactic vaccination in China and many other countries using the modified live vaccines derived from C-strain, which was developed in China in the mid-1950s. This minireview summarizes the epidemiology, diagnostic assays, control and challenges of CSF in China. Though CSF is essentially under control, complete eradication of CSF in China remains a challenging task and needs long-term, joint efforts of stakeholders.
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Affiliation(s)
- Yuzi Luo
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan Street, Harbin 150001, PR China
| | - Su Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan Street, Harbin 150001, PR China
| | - Yuan Sun
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan Street, Harbin 150001, PR China
| | - Hua-Ji Qiu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 427 Maduan Street, Harbin 150001, PR China.
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Li C, Li Y, Shen L, Huang J, Sun Y, Luo Y, Zhao B, Wang C, Yuan J, Qiu HJ. The role of noncoding regions of classical swine fever virus C-strain in its adaptation to the rabbit. Virus Res 2014; 183:117-22. [DOI: 10.1016/j.virusres.2014.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 02/06/2014] [Accepted: 02/07/2014] [Indexed: 11/16/2022]
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Newcomer BW, Givens MD. Approved and experimental countermeasures against pestiviral diseases: Bovine viral diarrhea, classical swine fever and border disease. Antiviral Res 2013; 100:133-50. [DOI: 10.1016/j.antiviral.2013.07.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 07/01/2013] [Accepted: 07/27/2013] [Indexed: 01/13/2023]
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Park JW, Jin Lee S, Choi EJ, Kim J, Song JY, Bock Gu M. An ultra-sensitive detection of a whole virus using dual aptamers developed by immobilization-free screening. Biosens Bioelectron 2013; 51:324-9. [PMID: 23994614 DOI: 10.1016/j.bios.2013.07.052] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Revised: 07/26/2013] [Accepted: 07/26/2013] [Indexed: 12/27/2022]
Abstract
In this study, we successfully developed a ssDNA aptamer pairs by using an advanced immobilization-free SELEX method with affinity-based selection and counter-screening process at every round. By implementing this method, two different aptamers specifically binding to bovine viral diarrhea virus type 1(BVDV type 1) with high affinity were successfully screened. This aptamer pair was applied to ultrasensitive detection platform for BVDV type 1 in a sandwich manner. The ultrasensitive detection of BVDV type 1 using one of aptamers conjugated with gold nanoparticles was obtained in aptamer-aptamer sandwich type sensing format, with the limit of detection of 800 copies/ml, which is comparable to a real-time PCR method.
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Affiliation(s)
- Jee-Woong Park
- College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, South Korea
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Bovine viral diarrhea virus (BVDV) infections in pigs. Vet Microbiol 2013; 165:185-9. [DOI: 10.1016/j.vetmic.2013.03.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 02/27/2013] [Accepted: 03/01/2013] [Indexed: 11/20/2022]
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