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Zhao N, Grund C, Beer M, Wang G, Harder TC. Tetraplex Fluorescent Microbead-Based Immunoassay for the Serodiagnosis of Newcastle Disease Virus and Avian Influenza Viruses in Poultry Sera. Pathogens 2022; 11:pathogens11091059. [PMID: 36145491 PMCID: PMC9505202 DOI: 10.3390/pathogens11091059] [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: 08/27/2022] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 12/03/2022] Open
Abstract
Virulent Newcastle disease virus (NDV) as well as highly pathogenic avian influenza (HPAIV) subtypes H5 and H7 induce contagious and lethal systemic disease in poultry. In contrast, low pathogenic AIV H5 and H7 may circulate clinically unnoticed in poultry but eventually generate HPAIV. Low pathogenic NDV strains are widely used as live-attenuated vaccines against ND. Serological tools are essential to conduct active surveillance for infections with notifiable AIV-H5, -H7 and to control vaccination against NDV and HPAIV in poultry populations. Here, recombinant nucleocapsid proteins (NP) of AIV and NDV, and haemagglutinin protein fragment-1 (HA1) of AIV subtypes H5 and H7 were expressed in E. coli. Purification and refolding were required before coating fluorescent microspheres via streptavidin-biotin linkage. The tetraplexed inhibition fluorescent microsphere immunoassay (iFMIA) was then assembled for analysis on a Luminex®-like platform (Bioplex®) using murine monoclonal antibodies specific for each of the four targets. The assay was evaluated by testing galliform poultry sera derived from experimental infections (n = 257) and from farms (n = 250), respectively. The tetraplex iFMIA compared favorably with commercially available ELISAs and the “gold standard” hemagglutination inhibition assay. Tetraplexed iFMIA provided a specific and sensitive tool to detect and discriminate AIV- and NDV-specific antibodies in the sera of galliform poultry.
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Affiliation(s)
- Na Zhao
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institute, Suedufer 10, 17493 Greifswald, Germany
- Precise Genome Engineering Center, School of Life Sciences, Guangzhou University, Guangzhou 510030, China
| | - Christian Grund
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institute, Suedufer 10, 17493 Greifswald, Germany
| | - Martin Beer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institute, Suedufer 10, 17493 Greifswald, Germany
| | - Gang Wang
- Precise Genome Engineering Center, School of Life Sciences, Guangzhou University, Guangzhou 510030, China
| | - Timm C. Harder
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institute, Suedufer 10, 17493 Greifswald, Germany
- Correspondence: ; Tel.: +49-38351-7-15-46
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2
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Li Y, Ye H, Liu M, Song S, Chen J, Cheng W, Yan L. Development and evaluation of a monoclonal antibody-based competitive ELISA for the detection of antibodies against H7 avian influenza virus. BMC Vet Res 2021; 17:64. [PMID: 33531001 PMCID: PMC7852141 DOI: 10.1186/s12917-021-02772-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 01/19/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND H7 subtype avian influenza has caused great concern in the global poultry industry and public health. The conventional serological subtype-specific diagnostics is implemented by hemagglutination inhibition (HI) assay despite lengthy operation time. In this study, an efficient, rapid and high-throughput competitive enzyme-linked immunosorbent assay (cELISA) was developed for detection of antibodies against H7 avian influenza virus (AIV) based on a novel monoclonal antibody specific to the hemagglutinin (HA) protein of H7 AIV. RESULTS The reaction parameters including antigen coating concentration, monoclonal antibody concentration and serum dilution ratio were optimized for H7 antibody detection. The specificity of the cELISA was tested using antisera against H1 ~ H9, H11 ~ H14 AIVs and other avian viruses. The selected cut-off values of inhibition rates for chicken, duck and peacock sera were 30.11, 26.85 and 45.66% by receiver-operating characteristic (ROC) curve analysis, respectively. With HI test as the reference method, the minimum detection limits for chicken, duck and peacock positive serum reached 20, 21 and 2- 1 HI titer, respectively. Compared to HI test, the diagnostic accuracy reached 100, 98.6, and 99.3% for chicken, duck and peacock by testing a total of 400 clinical serum samples, respectively. CONCLUSIONS In summary, the cELISA assay developed in this study provided a reliable, specific, sensitive and species-independent serological technique for rapid detection of H7 antibody, which was applicable for large-scale serological surveillance and vaccination efficacy evaluation programs.
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Affiliation(s)
- Yuan Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Jiangsu Engineering Laboratory of Animal Immunology, Jiangsu Detection Center of Terrestrial Wildlife Disease, Institute of Immunology and College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095 People’s Republic of China
| | - Hongliu Ye
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Jiangsu Engineering Laboratory of Animal Immunology, Jiangsu Detection Center of Terrestrial Wildlife Disease, Institute of Immunology and College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095 People’s Republic of China
| | - Meng Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Jiangsu Engineering Laboratory of Animal Immunology, Jiangsu Detection Center of Terrestrial Wildlife Disease, Institute of Immunology and College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095 People’s Republic of China
| | - Suquan Song
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Jiangsu Engineering Laboratory of Animal Immunology, Jiangsu Detection Center of Terrestrial Wildlife Disease, Institute of Immunology and College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095 People’s Republic of China
| | - Jin Chen
- Institute of Veterinary Immunology & Engineering, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014 People’s Republic of China
| | - Wangkun Cheng
- Nanjing Hongshan Forest Zoo, Nanjing, Jiangsu 210000 People’s Republic of China
| | - Liping Yan
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Jiangsu Engineering Laboratory of Animal Immunology, Jiangsu Detection Center of Terrestrial Wildlife Disease, Institute of Immunology and College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095 People’s Republic of China
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Chávez Ramos K, Nishiyama K, Maeki M, Ishida A, Tani H, Kasama T, Baba Y, Tokeshi M. Rapid, Sensitive, and Selective Detection of H5 Hemagglutinin from Avian Influenza Virus Using an Immunowall Device. ACS OMEGA 2019; 4:16683-16688. [PMID: 31616851 PMCID: PMC6788042 DOI: 10.1021/acsomega.9b02788] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 09/18/2019] [Indexed: 05/22/2023]
Abstract
Avian influenza virus (AIV) infection, caused by influenza virus type A, is an infectious, acute respiratory disease of birds related to influenza outbreaks worldwide. The highly pathogenic AIV subtype H5N1 has crossed species barriers to infect mammals, including humans, with fatal outcomes and has received attention as a potential pandemic threat. A rapid and timely detection in poultry is vitally important to prevent the virus spread. Despite their great sensitivity, conventional detection methods such as real-time reverse transcription-polymerase chain reaction and the agar gel precipitation test are time-consuming and labor-intensive and require special training. In this work, an immunowall device was evaluated as an easier and faster way for detecting AIV H5-hemagglutinin (AIV H5-HA). For detection, fluorescence-labeled or enzyme-labeled antibody was employed as a labeling antibody in a sandwich immunoassay. Both were shown in this paper to be easier and faster assays for detection compared with the conventional enzyme-linked immunosorbent assay (ELISA) kit. In addition, high selectivity was achieved for AIV H5-HA detection after the evaluation of other different HA virus subtypes. The limit of detection was 0.23 ng/mL for the enzyme-labeled antibody. This value was equivalent to that of the conventional ELISA kit but 8 times faster (31 min compared to 260 min). The detection range was 0.23-100 ng/mL. The immunowall device with the enzyme-labeled antibody offers a rapid, sensitive, selective, and simple immunoassay system for future H5 AIV real sample detection.
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Affiliation(s)
- Kenia Chávez Ramos
- Department
of Analytical Chemistry, School of Chemistry, National Autonomous University of Mexico, Av. Universidad 3000, Mexico
City 04510, Mexico
| | - Keine Nishiyama
- Graduate School of Chemical Sciences and Engineering, and Division of Applied
Chemistry, Faculty of Engineering, Hokkaido
University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Masatoshi Maeki
- Graduate School of Chemical Sciences and Engineering, and Division of Applied
Chemistry, Faculty of Engineering, Hokkaido
University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Akihiko Ishida
- Graduate School of Chemical Sciences and Engineering, and Division of Applied
Chemistry, Faculty of Engineering, Hokkaido
University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Hirofumi Tani
- Graduate School of Chemical Sciences and Engineering, and Division of Applied
Chemistry, Faculty of Engineering, Hokkaido
University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Toshihiro Kasama
- Department
of Bioengineering, School of Engineering, The University of Tokyo, Shinkawasaki, Saiwai-ku, Kanagawa 212-0032, Japan
- Institute
of Nano-Life Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yoshinobu Baba
- Institute
of Nano-Life Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Department
of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Manabu Tokeshi
- Graduate School of Chemical Sciences and Engineering, and Division of Applied
Chemistry, Faculty of Engineering, Hokkaido
University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
- Institute
of Nano-Life Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- E-mail: . Phone: +81-11-706-6744. Fax: +81-11-706-6745
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Lee T, Ahn JH, Park SY, Kim GH, Kim J, Kim TH, Nam I, Park C, Lee MH. Recent Advances in AIV Biosensors Composed of Nanobio Hybrid Material. MICROMACHINES 2018; 9:E651. [PMID: 30544883 PMCID: PMC6316213 DOI: 10.3390/mi9120651] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 11/29/2018] [Accepted: 12/06/2018] [Indexed: 11/17/2022]
Abstract
Since the beginning of the 2000s, globalization has accelerated because of the development of transportation systems that allow for human and material exchanges throughout the world. However, this globalization has brought with it the rise of various pathogenic viral agents, such as Middle East respiratory syndrome coronavirus (MERS-CoV), severe acute respiratory syndrome coronavirus (SARS-CoV), Zika virus, and Dengue virus. In particular, avian influenza virus (AIV) is highly infectious and causes economic, health, ethnical, and social problems to human beings, which has necessitated the development of an ultrasensitive and selective rapid-detection system of AIV. To prevent the damage associated with the spread of AIV, early detection and adequate treatment of AIV is key. There are traditional techniques that have been used to detect AIV in chickens, ducks, humans, and other living organisms. However, the development of a technique that allows for the more rapid diagnosis of AIV is still necessary. To achieve this goal, the present article reviews the use of an AIV biosensor employing nanobio hybrid materials to enhance the sensitivity and selectivity of the technique while also reducing the detection time and high-throughput process time. This review mainly focused on four techniques: the electrochemical detection system, electrical detection method, optical detection methods based on localized surface plasmon resonance, and fluorescence.
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Affiliation(s)
- Taek Lee
- Department of Chemical Engineering, Kwangwoon University, Seoul 01899, Korea.
| | - Jae-Hyuk Ahn
- Department of Electronic Engineering, Kwangwoon University, Seoul 01899, Korea.
| | - Sun Yong Park
- Department of Chemical Engineering, Kwangwoon University, Seoul 01899, Korea.
| | - Ga-Hyeon Kim
- Department of Chemical Engineering, Kwangwoon University, Seoul 01899, Korea.
| | - Jeonghyun Kim
- Department of Electronics Convergence Engineering, Kwangwoon University, Seoul 01899, Korea.
| | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea.
| | - Inho Nam
- Division of Chemistry & Bio-Environmental Sciences, Seoul Women's University, Seoul 01797, Korea.
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, Seoul 01899, Korea.
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea.
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5
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Kwon SH, Lee S, Jang J, Seo Y, Lim HY. A point-of-care diagnostic system to influenza viruses using chip-based ultra-fast PCR. J Med Virol 2018; 90:1019-1026. [PMID: 29424457 DOI: 10.1002/jmv.25046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 01/23/2018] [Indexed: 11/12/2022]
Abstract
In order to diagnose the infectious disease from clinical samples, the various protocols such as culturing microorganism, rapid diagnostic test using chromatographic method, ELISA, conventional PCR are developed. Since a novel strain of avian influenza can be cross-infected human as well as birds and livestock due to genetic reassortment, some strains of influenza such as H7N9 and H5N1 have emerged as a severe virus which can be threaten the health of poultry as well as human. Therefore, we explored the development of simultaneously and rapid diagnostic tool for seasonal influenza (A/H1N1, A/H3N2, B) and highly pathogenic avian influenza (A/H5N1, A/H7N9). We analyzed the unique nucleotide sequences of influenza types including three seasonal influenza, A/H7N9, and A/H5N1, and distinguished each type of influenza and diagnosed through One Step RT-PCR. In the results, Chip-based PCR technique can be diagnosed rapidly and directly from naked eye with EvaGreen the influenza also respiratory specimens within 23 min 15 s, including reverse transcription. The Chip-based PCR is a point-of-care system, and it is expected to reduce diagnosis time and to develop a diagnostic kit. Furthermore the Chip based PCR technique can be used for high risk pathogen in bioterror and/or biological warfare in the field.
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Affiliation(s)
- Soon-Hwan Kwon
- Department of Infectious Diseases, Research Center of Infectious and Environmental Diseases, Armed Forces Medical Research Institute, Yuseong-gu, Daejeon, Republic of Korea
| | - Sujin Lee
- Department of Infectious Diseases, Research Center of Infectious and Environmental Diseases, Armed Forces Medical Research Institute, Yuseong-gu, Daejeon, Republic of Korea
| | - Jeyoun Jang
- Department of Infectious Diseases, Research Center of Infectious and Environmental Diseases, Armed Forces Medical Research Institute, Yuseong-gu, Daejeon, Republic of Korea
| | - Yujin Seo
- 310 Daejeon Bioventure Town, Yuseong-daero, Yuseong-gu, Daejeon, Republic of Korea
| | - Hee-Young Lim
- Center for Disease Control and Prevention, National Institute of Health, Osongsaengmyeong2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea
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6
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Moulick A, Richtera L, Milosavljevic V, Cernei N, Haddad Y, Zitka O, Kopel P, Heger Z, Adam V. Advanced nanotechnologies in avian influenza: Current status and future trends - A review. Anal Chim Acta 2017; 983:42-53. [PMID: 28811028 PMCID: PMC7094654 DOI: 10.1016/j.aca.2017.06.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 06/24/2017] [Accepted: 06/26/2017] [Indexed: 02/04/2023]
Abstract
In the last decade, the control of avian influenza virus has experienced many difficulties, which have caused major global agricultural problems that have also led to public health consequences. Conventional biochemical methods are not sufficient to detect and control agricultural pathogens in the field due to the growing demand for food and subsidiary products; thus, studies aiming to develop potent alternatives to conventional biochemical methods are urgently needed. In this review, emerging detection systems, their applicability to diagnostics, and their therapeutic possibilities in view of nanotechnology are discussed. Nanotechnology-based sensors are used for rapid, sensitive and cost-effective diagnostics of agricultural pathogens. The application of different nanomaterials promotes interactions between these materials and the virus, which enables researchers to construct portable electroanalytical biosensing analyser that should effectively detect the influenza virus. The present review will provide insights into the guidelines for future experiments to develop better techniques to detect and control influenza viruses.
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Affiliation(s)
- Amitava Moulick
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Vedran Milosavljevic
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Natalia Cernei
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Yazan Haddad
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Ondrej Zitka
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Pavel Kopel
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic.
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7
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Madiyar FR, Haller SL, Farooq O, Rothenburg S, Culbertson C, Li J. AC dielectrophoretic manipulation and electroporation of vaccinia virus using carbon nanoelectrode arrays. Electrophoresis 2017; 38:1515-1525. [DOI: 10.1002/elps.201600436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 02/12/2017] [Accepted: 02/13/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Foram Ranjeet Madiyar
- Department of Physical Sciences; Embry-Riddle Aeronautical University; Daytona Beach FL USA
- Department of Chemistry; Kansas State University; Manhattan KS USA
| | - Sherry L. Haller
- Department of Pathology; University of Texas Medical Branch; Galveston TX USA
| | - Omer Farooq
- Department of Physical Sciences; Embry-Riddle Aeronautical University; Daytona Beach FL USA
| | - Stefan Rothenburg
- Department of Medical Microbiology and Immunology, School of Medicine; the University of California at Davis; Davis CA USA
| | | | - Jun Li
- Department of Chemistry; Kansas State University; Manhattan KS USA
- College of Chemistry and Chemical Engineering; Hubei Normal University; Huangshi P. R. China
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8
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Hatsuki R, Honda A, Kajitani M, Yamamoto T. Nonlinear electrical impedance spectroscopy of viruses using very high electric fields created by nanogap electrodes. Front Microbiol 2015; 6:940. [PMID: 26441875 PMCID: PMC4563260 DOI: 10.3389/fmicb.2015.00940] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 08/24/2015] [Indexed: 11/13/2022] Open
Abstract
Our living sphere is constantly exposed to a wide range of pathogenic viruses, which can be either known, or of novel origin. Currently, there is no methodology for continuously monitoring the environment for viruses in general, much less a methodology that allows the rapid and sensitive identification of a wide variety of viruses responsible for communicable diseases. Traditional approaches, based on PCR and immunodetection systems, only detect known or specifically targeted viruses. We here describe a simple device that can potentially detect any virus between nanogap electrodes using nonlinear impedance spectroscopy. Three test viruses, differing in shape and size, were used to demonstrate the general applicability of this approach: baculovirus, tobacco mosaic virus (TMV), and influenza virus. We show that each of the virus types responded differently in the nanogap to changes in the electric field strength, and the impedance of the virus solutions differed depending both on virus type and virus concentration. These preliminary results show that the three virus types can be distinguished and their approximate concentrations determined. Although further studies are required, the proposed nonlinear impedance spectroscopy method may achieve a sensitivity comparable to that of more traditional, but less versatile, virus detection systems.
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Affiliation(s)
- Ryuji Hatsuki
- Department of Mechanical and Control Engineering, Tokyo Institute of Technology Tokyo, Japan
| | - Ayae Honda
- Faculty of Bioscience and Applied Chemistry, Housei University Tokyo, Japan
| | | | - Takatoki Yamamoto
- Department of Mechanical and Control Engineering, Tokyo Institute of Technology Tokyo, Japan
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9
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Chen L, Neethirajan S. A homogenous fluorescence quenching based assay for specific and sensitive detection of influenza virus A hemagglutinin antigen. SENSORS 2015; 15:8852-65. [PMID: 25884789 PMCID: PMC4431298 DOI: 10.3390/s150408852] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/02/2015] [Accepted: 04/09/2015] [Indexed: 11/16/2022]
Abstract
Influenza pandemics cause millions of deaths worldwide. Effective surveillance is required to prevent their spread and facilitate the development of appropriate vaccines. In this study, we report the fabrication of a homogenous fluorescence-quenching-based assay for specific and sensitive detection of influenza virus surface antigen hemagglutinins (HAs). The core of the assay is composed of two nanoprobes namely the glycan-conjugated highly luminescent quantum dots (Gly-QDs), and the HA-specific antibody-modified gold nanoparticle (Ab-Au NPs). When exposed to strain-specific HA, a binding event between the HA and the two nanoprobes takes place, resulting in the formation of a sandwich complex which subsequently brings the two nanoprobes closer together. This causes a decrease in QDs fluorescence intensity due to a non-radiative energy transfer from QDs to Au NPs. A resulting correlation between the targets HA concentrations and fluorescence changes can be observed. Furthermore, by utilizing the specific interaction between HA and glycan with sialic acid residues, the assay is able to distinguish HAs originated from viral subtypes H1 (human) and H5 (avian). The detection limits in solution are found to be low nanomolar and picomolar level for sensing H1-HA and H5-HA, respectively. Slight increase in assay sensitivity was found in terms of detection limit while exposing the assay in the HA spiked in human sera solution. We believe that the developed assay could serve as a feasible and sensitive diagnostic tool for influenza virus detection and discrimination, with further improvement on the architectures.
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Affiliation(s)
- Longyan Chen
- BioNano Laboratory, School of Engineering, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Suresh Neethirajan
- BioNano Laboratory, School of Engineering, University of Guelph, Guelph, ON N1G 2W1, Canada.
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10
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Aptamers in diagnostics and treatment of viral infections. Viruses 2015; 7:751-80. [PMID: 25690797 PMCID: PMC4353915 DOI: 10.3390/v7020751] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 01/13/2015] [Accepted: 02/12/2015] [Indexed: 02/07/2023] Open
Abstract
Aptamers are in vitro selected DNA or RNA molecules that are capable of binding a wide range of nucleic and non-nucleic acid molecules with high affinity and specificity. They have been conducted through the process known as SELEX (Systematic Evolution of Ligands by Exponential Enrichment). It serves to reach specificity and considerable affinity to target molecules, including those of viral origin, both proteins and nucleic acids. Properties of aptamers allow detecting virus infected cells or viruses themselves and make them competitive to monoclonal antibodies. Specific aptamers can be used to interfere in each stage of the viral replication cycle and also inhibit its penetration into cells. Many current studies have reported possible application of aptamers as a treatment or diagnostic tool in viral infections, e.g., HIV (Human Immunodeficiency Virus), HBV (Hepatitis B Virus), HCV (Hepatitis C Virus), SARS (Severe Acute Respiratory Syndrome), H5N1 avian influenza and recently spread Ebola. This review presents current developments of using aptamers in the diagnostics and treatment of viral diseases.
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11
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El Zowalaty ME, Bustin SA, Husseiny MI, Ashour HM. Avian influenza: virology, diagnosis and surveillance. Future Microbiol 2014; 8:1209-27. [PMID: 24020746 DOI: 10.2217/fmb.13.81] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Avian influenza virus (AIV) is the causative agent of a zoonotic disease that affects populations worldwide with often devastating economic and health consequences. Most AIV subtypes cause little or no disease in waterfowl, but outbreaks in poultry can be associated with high mortality. Although transmission of AIV to humans occurs rarely and is strain dependent, the virus has the ability to mutate or reassort into a form that triggers a life-threatening infection. The constant emergence of new influenza strains makes it particularly challenging to predict the behavior, spread, virulence or potential for human-to-human transmission. Because it is difficult to anticipate which viral strain or what location will initiate the next pandemic, it is difficult to prepare for that event. However, rigorous implementation of biosecurity, vaccination and education programs can minimize the threat of AIV. Global surveillance programs help record and identify newly evolving and potentially pandemic strains harbored by the reservoir host.
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Affiliation(s)
- Mohamed E El Zowalaty
- Postgraduate Medical Institute, Faculty of Health, Social Care & Education, Anglia Ruskin University, Chelmsford, Essex, UK
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12
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Elizalde M, Agüero M, Buitrago D, Yuste M, Arias ML, Muñoz MJ, Lelli D, Pérez-Ramírez E, Moreno-Martin AM, Fernández-Pinero J. Rapid molecular haemagglutinin subtyping of avian influenza isolates by specific real-time RT-PCR tests. J Virol Methods 2013; 196:71-81. [PMID: 24184949 DOI: 10.1016/j.jviromet.2013.10.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 10/14/2013] [Accepted: 10/18/2013] [Indexed: 10/26/2022]
Abstract
Sixteen haemagglutinin (HA) subtypes of avian influenza viruses (AIV) have been described to date. Rapid subtype identification of any AIV is of major interest because of the possible serious consequences for the poultry industry and even public health. Molecular techniques currently allow immediate accurate subtype characterisation prior to virus isolation. In this study, a set of fourteen specific real-time RT-PCR methods were developed and evaluated for AIV HA subtyping (H1-H4, H6-H8, H10-H16), H5 and H9 being excluded on the basis of the current validity of the European Union (EU) recommended specific assays. Specific primers and probes sets for each HA-subtype were designed to hybridise the largest isolates range within each single subtype, considering the Eurasian lineage as a major target. The robustness and general application of the 14 HA-subtype methods were verified by the analysis of 110 AIV isolates belonging to all 16 HA-subtypes, performed in different laboratories. The developed real-time RT-PCR assays proved to be highly specific and revealed suitable sensitivity, allowing direct HA-subtyping of clinical material. In summary, this study provides for the first time a panel of molecular tests using specific hydrolysis probes for rapid and complete AIV HA-subtype identification.
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Affiliation(s)
- Maia Elizalde
- Centro de Investigación en Sanidad Animal (CISA-INIA), Valdeolmos, 28130 Madrid, Spain
| | | | | | - María Yuste
- Centro de Investigación en Sanidad Animal (CISA-INIA), Valdeolmos, 28130 Madrid, Spain
| | - María Luisa Arias
- Centro de Investigación en Sanidad Animal (CISA-INIA), Valdeolmos, 28130 Madrid, Spain
| | - María Jesús Muñoz
- Centro de Investigación en Sanidad Animal (CISA-INIA), Valdeolmos, 28130 Madrid, Spain
| | - Davide Lelli
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), Via Bianchi 9, 25124 Brescia, Italy
| | - Elisa Pérez-Ramírez
- Centro de Investigación en Sanidad Animal (CISA-INIA), Valdeolmos, 28130 Madrid, Spain
| | - Ana María Moreno-Martin
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER), Via Bianchi 9, 25124 Brescia, Italy
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13
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Zhang RQ, Liu SL, Zhao W, Zhang WP, Yu X, Li Y, Li AJ, Pang DW, Zhang ZL. A Simple Point-of-Care Microfluidic Immunomagnetic Fluorescence Assay for Pathogens. Anal Chem 2013; 85:2645-51. [DOI: 10.1021/ac302903p] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Rui-Qiao Zhang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
- Wuhan Institute
of Biotechnology,
Wuhan, 430075, People’s Republic of China
| | - Shu-Lin Liu
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
| | - Wei Zhao
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
| | - Wan-Po Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, People’s
Republic of China
| | - Xu Yu
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
| | - Yong Li
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
| | - An-Jun Li
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
| | - Dai-Wen Pang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
- Wuhan Institute
of Biotechnology,
Wuhan, 430075, People’s Republic of China
| | - Zhi-Ling Zhang
- Key Laboratory of Analytical
Chemistry for Biology and Medicine (Ministry of Education), College
of Chemistry and Molecular Sciences, State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People’s Republic
of China
- Wuhan Institute
of Biotechnology,
Wuhan, 430075, People’s Republic of China
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14
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Nucleic acid sandwich hybridization assay with quantum dot-induced fluorescence resonance energy transfer for pathogen detection. SENSORS 2012; 12:16660-72. [PMID: 23211753 PMCID: PMC3571803 DOI: 10.3390/s121216660] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 11/23/2012] [Accepted: 11/30/2012] [Indexed: 11/17/2022]
Abstract
This paper reports a nucleic acid sandwich hybridization assay with a quantum dot (QD)-induced fluorescence resonance energy transfer (FRET) reporter system. Two label-free hemagglutinin H5 sequences (60-mer DNA and 630-nt cDNA fragment) of avian influenza viruses were used as the targets in this work. Two oligonucleotides (16 mers and 18 mers) that specifically recognize two separate but neighboring regions of the H5 sequences were served as the capturing and reporter probes, respectively. The capturing probe was conjugated to QD655 (donor) in a molar ratio of 10:1 (probe-to-QD), and the reporter probe was labeled with Alexa Fluor 660 dye (acceptor) during synthesis. The sandwich hybridization assay was done in a 20 μL transparent, adhesive frame-confined microchamber on a disposable, temperature-adjustable indium tin oxide (ITO) glass slide. The FRET signal in response to the sandwich hybridization was monitored by a homemade optical sensor comprising a single 400 nm UV light-emitting diode (LED), optical fibers, and a miniature 16-bit spectrophotometer. The target with a concentration ranging from 0.5 nM to 1 μM was successfully correlated with both QD emission decrease at 653 nm and dye emission increase at 690 nm. To sum up, this work is beneficial for developing a portable QD-based nucleic acid sensor for on-site pathogen detection.
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15
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Claes G, Vangeluwe D, Van der Stede Y, van den Berg T, Lambrecht B, Marché S. Evaluation of Four Enzyme-Linked Immunosorbent Assays for the Serologic Survey of Avian Influenza in Wild Bird Species. Avian Dis 2012; 56:949-54. [DOI: 10.1637/10165-040912-reg.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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A SPR aptasensor for detection of avian influenza virus H5N1. SENSORS 2012; 12:12506-18. [PMID: 23112728 PMCID: PMC3478855 DOI: 10.3390/s120912506] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 08/27/2012] [Accepted: 08/28/2012] [Indexed: 11/16/2022]
Abstract
Rapid and specific detection of avian influenza virus (AIV) is urgently needed due to the concerns over the potential outbreaks of highly pathogenic H5N1 influenza in animals and humans. Aptamers are artificial oligonucleic acids that can bind specific target molecules, and show comparable affinity for target viruses and better thermal stability than monoclonal antibodies. The objective of this research was to use a DNA-aptamer as the specific recognition element in a portable Surface Plasmon Resonance (SPR) biosensor for rapid detection of AIV H5N1 in poultry swab samples. A SPR biosensor was fabricated using selected aptamers that were biotinylated and then immobilized on the sensor gold surface coated with streptavidin via streptavidin-biotin binding. The immobilized aptamers captured AIV H5N1 in a sample solution, which caused an increase in the refraction index (RI). After optimizing the streptavidin and aptamer parameters, the results showed that the RI value was linearly related (R2 = 0.99) to the concentration of AIV in the range of 0.128 to 1.28 HAU. Negligible signal (<4% of H5N1) was observed from six non-target AIV subtypes. The AIV H5N1 in poultry swab samples with concentrations of 0.128 to 12.8 HAU could be detected using this aptasensor in 1.5 h.
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17
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Lum J, Wang R, Lassiter K, Srinivasan B, Abi-Ghanem D, Berghman L, Hargis B, Tung S, Lu H, Li Y. Rapid detection of avian influenza H5N1 virus using impedance measurement of immuno-reaction coupled with RBC amplification. Biosens Bioelectron 2012; 38:67-73. [PMID: 22647532 DOI: 10.1016/j.bios.2012.04.047] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 04/30/2012] [Indexed: 11/17/2022]
Abstract
Avian influenza virus (AIV) subtype H5N1 was first discovered in the 1990 s and since then its emergence has become a likely source of a global pandemic and economic loss. Currently accepted gold standard methods of influenza detection, viral culture and rRT-PCR, are time consuming, expensive and require special training and laboratory facilities. A rapid, sensitive, and specific screening method is needed for in-field or bedside testing of AI virus to effectively implement quarantines and medications. Therefore, the objective of this study was to improve the specificity and sensitivity of an impedance biosensor that has been developed for the screening of AIV H5. Three major components of the developed biosensor are immunomagnetic nanoparticles for the separation of AI virus, a microfluidic chip for sample control and an interdigitated microelectrode for impedance measurement. In this study polyclonal antibody against N1 subtype was immobilized on the surface of the microelectrode to specifically bind AIV H5N1 to generate more specific impedance signal and chicken red blood cells (RBC) were used as biolabels to attach to AIV H5N1 captured on the microelectrode to amplify impedance signal. RBC amplification was shown to increase the impedance signal change by more than 100% compared to the protocol without RBC biolabels, and was necessary for forming a linear calibration curve for the biosensor. The use of a second antibody against N1 offered much greater specificity and reliability than the previous biosensor protocol. The biosensor was able to detect AIV H5N1 at concentrations down to 10(3) EID(50)ml(-1) in less than 2h.
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Affiliation(s)
- Jacob Lum
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR 72701, USA
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18
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Escorcia M, Attene-Ramos MS, Estrada MJ, Nava GM. Improving global influenza surveillance: trends of A(H5N1) virus in Africa and Asia. BMC Res Notes 2012; 5:62. [PMID: 22268987 PMCID: PMC3305413 DOI: 10.1186/1756-0500-5-62] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 01/23/2012] [Indexed: 11/10/2022] Open
Abstract
Background Highly pathogenic avian influenza A(H5N1) viruses are an important health problem in many Asian and African countries. The current increase in human cases demonstrates that influenza A(H5N1) is still a significant global pandemic threat. Many health organizations have recognized the need for new strategies to improve influenza global surveillance. Specifically, the World Health Organization through the global technical consultation for influenza surveillance have called for a detailed picture of the current limitations, especially at the nation level, to evaluate, standardize and strength reporting systems. The main goal of our study is to demonstrate the value of genetic surveillance as part of a strategic surveillance plan. As a proof of concept, we evaluated the current situation of influenza A(H5N1) in Asian and Africa. Results Our analysis revealed a power-law distribution in the number of sequences of A(H5N1) viruses analyzed and/or reported to influenza surveillance networks. The majority of the Asian and African countries at great risk of A(H5N1) infections have very few (approximately three orders of magnitude) sequenced A(H5N1) viruses (e.g. hemagglutinin genes). This suggests that countries under pandemic alert for avian influenza A(H5N1) have very limited participation (e.g. data generation, genetic analysis and data share) in avian influenza A(H5N1) surveillance. More important, this study demonstrates the usefulness of influenza genetic surveillance to detect emerging pandemic threat viruses. Conclusions Our study reveals that some countries suffering from human cases of avian influenza have limited participation (e.g. genetic surveillance or data share) with global surveillance networks. Also, we demonstrate that the implementation of genetic surveillance programs could increase and strengthen worldwide epidemic and pandemic preparedness. We hope that this work promotes new discussions between policy makers and health surveillance organizations to improve current methodologies and regulations.
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Affiliation(s)
- Magdalena Escorcia
- Departamento de Medicina y Zootecnia de Aves. Facultad de MedicinaVeterinaria y Zootecnia, Universidad Nacional Autónoma de México. Ciudad Universitaria, Coyoacán, DF 04510, Mexico
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19
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Rapid detection of avian influenza virus in chicken fecal samples by immunomagnetic capture reverse transcriptase-polymerase chain reaction assay. Diagn Microbiol Infect Dis 2011; 69:258-65. [PMID: 21353948 DOI: 10.1016/j.diagmicrobio.2010.09.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 09/09/2010] [Accepted: 09/29/2010] [Indexed: 11/22/2022]
Abstract
Avian influenza virus (AIV) causes great economic losses for the poultry industry worldwide and threatens the human population with a pandemic. The conventional detection method for AIV involves sample preparation of viral RNA extraction and purification from raw sample such as bird droppings. In this study, magnetic beads were applied for immunoseparation and purification of AIV from spiked chicken fecal sample. The beads were conjugated with monoclonal antibodies against the AIV nucleoprotein, which is conserved in all the AIV. The bead-captured virus was detected by reverse transcriptase-polymerase chain reaction (RT-PCR) without RNA extraction because of effective removal of RT-PCR inhibitors. The developed bead-based assay showed a similar detection limit comparable to the RNA extraction and the classic virus isolation method. Using ready-to-use antibody-conjugated bead, the method requires less than 5 h. Furthermore, the method has potential to integrate into a Lab-on-a-chip system for rapid detection and identification of AIV.
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20
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Linke S, Neubauer K, Dorner MB, Dorner BG, Pauli G, Schweiger B. Generation and characterisation of monoclonal antibodies against influenza virus A, subtype H5N1. J Virol Methods 2011; 175:85-94. [PMID: 21549148 PMCID: PMC7185612 DOI: 10.1016/j.jviromet.2011.04.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 04/18/2011] [Accepted: 04/20/2011] [Indexed: 10/27/2022]
Abstract
The emergence of highly pathogenic avian influenza A virus (HPAIV) subtype H5N1 in 1997 has since resulted in large outbreaks in poultry and in transmission from poultry to humans, mostly in southeast Asia, but also in several European countries. Effective diagnosis and control measures are essential for the management of HPAIV infections. To develop a rapid diagnostic test, a panel of murine monoclonal antibodies (mAbs) against influenza virus A subtype H5 was generated. Eleven mAbs were produced and characterised according to their reactivity by indirect and sandwich ELISA and western blotting against different H5 subtypes representing past and viruses currently circulating. Ten out of 11 mAbs reacted strongly with the haemagglutinin (HA) protein of H5 viruses, whereas one mAb reacted with the M1 protein. Targeted HA protein epitopes seemed to be conformational. One hybridoma clone binds to a linear epitope of the M1 protein. One specific mAb reacts with HPAIV H5 in the immunofluorescence test, and two antibodies neutralised H5 viruses. On the basis of the results, the set of seven mAbs is appropriate for developing diagnostic tests. With the generated mAbs, a sandwich ELISA was developed recognising all H5N1 strains tested but no other influenza viruses. With this ELISA, as little as 0.005 HA units or 0.1 ng/ml H5N1 was detected, surpassing other ELISA tests. The novel reagents have the potential to improve significantly available rapid antigen detection systems.
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Affiliation(s)
- Sonja Linke
- National Reference Center for Influenza, Robert Koch-Institut, Nordufer 20, 13353 Berlin, Germany.
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21
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Lopez CA, Daaboul GG, Vedula RS, Ozkumur E, Bergstein DA, Geisbert TW, Fawcett HE, Goldberg BB, Connor JH, Unlü MS. Label-free multiplexed virus detection using spectral reflectance imaging. Biosens Bioelectron 2011; 26:3432-7. [PMID: 21342761 DOI: 10.1016/j.bios.2011.01.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Revised: 12/21/2010] [Accepted: 01/14/2011] [Indexed: 10/18/2022]
Abstract
We demonstrate detection of whole viruses and viral proteins with a new label-free platform based on spectral reflectance imaging. The Interferometric Reflectance Imaging Sensor (IRIS) has been shown to be capable of sensitive protein and DNA detection in a real time and high-throughput format. Vesicular stomatitis virus (VSV) was used as the target for detection as it is well-characterized for protein composition and can be modified to express viral coat proteins from other dangerous, highly pathogenic agents for surrogate detection while remaining a biosafety level 2 agent. We demonstrate specific detection of intact VSV virions achieved with surface-immobilized antibodies acting as capture probes which is confirmed using fluorescence imaging. The limit of detection is confirmed down to 3.5 × 10(5)plaque-forming units/mL (PFUs/mL). To increase specificity in a clinical scenario, both the external glycoprotein and internal viral proteins were simultaneously detected with the same antibody arrays with detergent-disrupted purified VSV and infected cell lysate solutions. Our results show sensitive and specific virus detection with a simple surface chemistry and minimal sample preparation on a quantitative label-free interferometric platform.
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Affiliation(s)
- Carlos A Lopez
- Department of Electrical & Computer Engineering, Boston University, Boston, MA 02215, USA
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22
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Dhumpa R, Bu M, Handberg KJ, Wolff A, Bang DD. Rapid sample preparation for detection and identification of avian influenza virus from chicken faecal samples using magnetic bead microsystem. J Virol Methods 2010; 169:228-31. [PMID: 20670656 DOI: 10.1016/j.jviromet.2010.07.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Revised: 07/15/2010] [Accepted: 07/20/2010] [Indexed: 10/19/2022]
Abstract
Avian influenza virus (AIV) is an infectious agent of birds and mammals. AIV is causing huge economic loss and can be a threat to human health. Reverse transcriptase polymerase chain reaction (RT-PCR) has been used as a method for the detection and identification of AIV virus. Although RT-PCR is a sensitive method for detection of AIV, it requires sample preparation including separation and purification of AIV and concentrate viral RNA. It is laborious and complex process especially for diagnosis using faecal sample. In this study, magnetic beads were used for immunoseparation of AIV in chicken faecal sample by a magnetic microsystem. Using this system, all the 16 hemagglutinin (H) and 9 neuraminidase (N) subtypes of AIV were separated and detected in spiked faecal samples using RT-PCR, without an RNA extraction step. This rapid sample preparation method can be integrated with a total analysis microsystem and used for diagnosis of AIV.
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Affiliation(s)
- Raghuram Dhumpa
- Laboratory of Applied Micro and Nanotechnology (LAMINATE), National Veterinary Institute (VET), Technical University of Denmark (DTU), Hangøvej 2, DK-8200 Aarhus N, Denmark
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23
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Pérez-Ramírez E, Rodríguez V, Sommer D, Blanco JM, Acevedo P, Heffels-Redmann U, Höfle U. Serologic testing for avian influenza viruses in wild birds: comparison of two commercial competition enzyme-linked immunosorbent assays. Avian Dis 2010; 54:729-33. [PMID: 20521723 DOI: 10.1637/8802-040109-resnote.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Serologic testing of wild birds for avian influenza virus (AIV) surveillance poses problems due to species differences and nonspecific inhibitors that may be present in sera of wild birds. Recently available competitive enzyme-linked immunosorbent assay (cELISA) kits offer a new species-independent approach. In this study we compare two commercial competitive cELISAs, using a total of 184 serum and plasma samples from 23 species of wild birds belonging to 10 orders. Thirteen samples were from experimentally high pathogenicity AI and low pathogenicity AI infected red-legged partridges (Alectoris rufa), 77 samples were from a flock of sentinel hybrid ducks confirmed infected by AI by real-time PCR, and 94 samples were from wild birds admitted to a rehabilitation center. Both ELISAs detected AI antibodies in the experimentally infected partridges, whereas hemagglutination inhibition (HI) was negative. Concordance in results between the two ELISAs was 51.5%. When specific subtype-H5/H7 HI-positive samples were considered for comparison, ELISA 1 appeared to perform better on ducks, whereas ELISA 2 appeared to perform better in other wild bird species. Overall, 68.2% of H5/H7 positive samples tested positive by ELISA 1 and 36% by ELISA 2. Both ELISAs detected AIV-antibody-positive samples negative by specific HI against 9 of the 16 existing hemagglutinin (HA) subtypes. Presumably this reflects either higher sensitivity of cELISA when compared to HI, presence of antibodies against HA subtypes not tested, or unspecific reactions. Performance of ELISA 1 on ducks appears to be comparable to in-house cELISA previously used by other authors in wild birds, but requires a relatively large sample volume. Alternatively, although ELISA 2 required a smaller sample volume, it was less effective at identifying HI-positive samples. The results reflect the necessity of validation of cELISA tests for individual species or at least families, as required by the OIE.
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Affiliation(s)
- Elisa Pérez-Ramírez
- Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13005 Ciudad Real, Spain
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24
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Balogh Z, Lautner G, Bardóczy V, Komorowska B, Gyurcsányi RE, Mészáros T. Selection and versatile application of virus-specific aptamers. FASEB J 2010; 24:4187-95. [PMID: 20624933 DOI: 10.1096/fj.09-144246] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Although the significance of molecular diagnostics in routine plant virus detection is rapidly growing, the preferred methods are still antibody-based enzyme immunoassays. In the past decade, aptamers have been demonstrated to be viable alternatives of antibodies in many applications. We set out to select apple stem pitting virus (ASPV)-specific aptamers and to apply them as antibody substitutes in various immunoassay methods. The applied systematic evolution of ligands by exponential enrichment (SELEX) procedure resulted in highly discriminative aptamers selectively binding to the target virus coat protein even in complex protein matrixes. We developed protocols for exploitation of aptamers in diverse plant virus diagnosis methods, such as dot and Western blot analyses and enzyme-linked oligonucleotide assay (ELONA). Our selected aptamers proved to be superior to the available antibody in all aspects. In contrast to the antibody, the aptamers decorate both native and denaturated proteins, and ELONA produces higher signal intensity than traditional enzyme-linked immunosorbent assay (ELISA) with virus-infected plant extract. Summarily, our results present the selection and practical utilization of first plant virus-specific aptamers. Most important, the first application of ELONA for virus detection is demonstrated, which proposes a novel, more flexible, and cost-effective means of virus diagnostics.
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Affiliation(s)
- Zsófia Balogh
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
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25
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Abstract
Molecular-based techniques for detecting influenza viruses have become an integral component of human and animal surveillance programs in the last two decades. The recent pandemic of the swine-origin influenza A virus (H1N1) and the continuing circulation of highly pathogenic avian influenza A virus (H5N1) further stress the need for rapid and accurate identification and subtyping of influenza viruses for surveillance, outbreak management, diagnosis and treatment. There has been remarkable progress on the detection and molecular characterization of influenza virus infections in clinical, mammalian, domestic poultry and wild bird samples in recent years. The application of these techniques, including reverse transcriptase-PCR, real-time PCR, microarrays and other nucleic acid sequencing-based amplifications, have greatly enhanced the capability for surveillance and characterization of influenza viruses.
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Affiliation(s)
- Ruixue Wang
- Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jeffery K Taubenberger
- Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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26
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Chen X, Xie H, Seow ZY, Gao Z. An ultrasensitive DNA biosensor based on enzyme-catalyzed deposition of cupric hexacyanoferrate nanoparticles. Biosens Bioelectron 2010; 25:1420-6. [DOI: 10.1016/j.bios.2009.10.041] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Revised: 10/26/2009] [Accepted: 10/27/2009] [Indexed: 11/28/2022]
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27
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Abstract
Public health preparedness requires effective surveillance of and rapid response to infectious disease outbreaks. Inclusion of research activities within the outbreak setting provides important opportunities to maximize limited resources, to enhance gains in scientific knowledge, and ultimately to increase levels of preparedness. With rapid advances in laboratory technologies, banking and analysis of human genomic specimens can be conducted as part of public health investigations, enabling valuable research well into the future.
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Affiliation(s)
- Nicole F Dowling
- Office of Public Health Genomics, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Marta Gwinn
- Office of Public Health Genomics, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
| | - Alison Mawle
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA
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28
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Immuno-interferometric sensor for the detection of influenza A nucleoprotein. Anal Bioanal Chem 2009; 396:667-74. [DOI: 10.1007/s00216-009-3235-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2009] [Revised: 10/07/2009] [Accepted: 10/12/2009] [Indexed: 10/20/2022]
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