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Lv H, Shi F, Yin H, Jiao Y, Wei P. Development of a double-antibody sandwich ELISA for detection of SARS-CoV-2 variants based on nucleocapsid protein-specific antibodies. Microbiol Immunol 2024. [PMID: 39287179 DOI: 10.1111/1348-0421.13173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 09/03/2024] [Accepted: 09/04/2024] [Indexed: 09/19/2024]
Abstract
The COVID-19 pandemic, driven by the SARS-CoV-2 virus, has posed a severe threat to global public health. Rapid, reliable, and easy-to-use detection methods for SARS-CoV-2 variants are critical for effective epidemic prevention and control. The N protein of SARS-CoV-2 serves as an ideal target for antigen detection. In this study, we achieved soluble expression of the recombinant SARS-CoV-2 N protein using an Escherichia coli expression system and generated specific monoclonal antibodies by immunizing BALB/c mice. We successfully developed 10 monoclonal antibodies against the N protein, designated 5B7, 5F2-C11, 5E2-E8, 6C3-D8, 7C8, 9F2-E9, 12H5-D11, 13G2-C10, 14E9-F6, and 15H3-E10. Using these antibodies, we established a sandwich ELISA with 6C3-D8 as the capture antibody and 5F2-C11 as the detection antibody. The assay demonstrated a sensitivity of 0.78 ng/mL and showed no cross-reactivity with MERS-CoV, HCoV-OC43, HCoV-NL63, and HCoV-229E. Furthermore, this method successfully detected both wild-type SARS-CoV-2 and its variants, including Alpha, Beta, Delta, and Omicron. These findings indicate that our sandwich ELISA exhibits excellent sensitivity, specificity, and broad-spectrum applicability, providing a robust tool for detecting SARS-CoV-2 variants.
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Affiliation(s)
- Hai Lv
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Fengjuan Shi
- NHC Key Laboratory of Enteric Pathogenic Microbiology, Jiangsu Province Center for Disease Control and Prevention, Nanjing, China
| | - Huimin Yin
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Yongjun Jiao
- NHC Key Laboratory of Enteric Pathogenic Microbiology, Jiangsu Province Center for Disease Control and Prevention, Nanjing, China
| | - Pingmin Wei
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
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2
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Rocchi A, Sariyer IK, Berger JR. Revisiting JC virus and progressive multifocal leukoencephalopathy. J Neurovirol 2023; 29:524-537. [PMID: 37659983 DOI: 10.1007/s13365-023-01164-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/10/2023] [Accepted: 07/27/2023] [Indexed: 09/04/2023]
Abstract
Since its definition 65 years ago, progressive multifocal leukoencephalopathy (PML) has continued to devastate a growing population of immunosuppressed patients despite major advances in our understanding of the causative JC virus (JCV). Unless contained by the immune system, JCV lyses host oligodendrocytes collateral to its life cycle, leading to demyelination, neurodegeneration, and death. Novel treatments have stagnated in the absence of an animal model while current antiviral agents fail to address the now ubiquitous polyomavirus. In this review, we highlight the established pathogenesis by which JCV infection progresses to PML, highlighting major challenges that must be overcome to eliminate the underlying virus and, therefore, the debilitating disease.
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Affiliation(s)
- Angela Rocchi
- Department of Microbiology, Immunology and Inflammation, Center for Neurovirology and Gene Editing, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA
| | - Ilker K Sariyer
- Department of Microbiology, Immunology and Inflammation, Center for Neurovirology and Gene Editing, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA.
| | - Joseph R Berger
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, 3400 Convention Avenue, Philadelphia, PA, 19104, USA.
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Trinh KTL, Do HDK, Lee NY. Recent Advances in Molecular and Immunological Diagnostic Platform for Virus Detection: A Review. BIOSENSORS 2023; 13:490. [PMID: 37185566 PMCID: PMC10137144 DOI: 10.3390/bios13040490] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/14/2023] [Accepted: 04/18/2023] [Indexed: 05/17/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused an ongoing coronavirus disease (COVID-19) outbreak and a rising demand for the development of accurate, timely, and cost-effective diagnostic tests for SARS-CoV-2 as well as other viral infections in general. Currently, traditional virus screening methods such as plate culturing and real-time PCR are considered the gold standard with accurate and sensitive results. However, these methods still require sophisticated equipment, trained personnel, and a long analysis time. Alternatively, with the integration of microfluidic and biosensor technologies, microfluidic-based biosensors offer the ability to perform sample preparation and simultaneous detection of many analyses in one platform. High sensitivity, accuracy, portability, low cost, high throughput, and real-time detection can be achieved using a single platform. This review presents recent advances in microfluidic-based biosensors from many works to demonstrate the advantages of merging the two technologies for sensing viruses. Different platforms for virus detection are classified into two main sections: immunoassays and molecular assays. Moreover, available commercial sensing tests are analyzed.
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Affiliation(s)
- Kieu The Loan Trinh
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
| | - Hoang Dang Khoa Do
- NTT Hi-Tech Institute, Nguyen Tat Thanh University, Ward 13, District 04, Ho Chi Minh City 70000, Vietnam
| | - Nae Yoon Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
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Kim JW, Cho AH, Shin HG, Jang SH, Cho SY, Lee YR, Lee S. Development and Characterization of Phage Display-Derived Monoclonal Antibodies to the S2 Domain of Spike Proteins of Wild-Type SARS-CoV-2 and Multiple Variants. Viruses 2023; 15:174. [PMID: 36680213 PMCID: PMC9862430 DOI: 10.3390/v15010174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/07/2022] [Accepted: 12/23/2022] [Indexed: 01/11/2023] Open
Abstract
The rapid emergence of new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants has resulted in the ongoing global coronavirus disease 2019 (COVID-19) pandemic. Thus, the rapid development of a platform to detect a broad range of SARS-CoV-2 variants is essential for successful COVID-19 management. In this study, four SARS-CoV-2 spike protein-specific single-chain variable fragments (scFvs) were isolated from a synthetic antibody library using phage display technology. Following the conversion of these scFvs into monoclonal antibodies (mAbs) (K104.1-K104.4) and production and purification of the mAbs, the antibody pair (K104.1 and K104.2) that exhibited the highest binding affinity (K104.1 and K104.2, 1.3 nM and 1.9 nM) was selected. Biochemical analyses revealed that this antibody pair specifically bound to different sites on the S2 subunit of the spike protein. Furthermore, we developed a highly sensitive sandwich immunoassay using this antibody pair that accurately and quantitatively detected the spike proteins of wild-type SARS-CoV-2 and multiple variants, including Alpha, Beta, Gamma, Delta, Kappa, and Omicron, in the picomolar range. Conclusively, the novel phage display-derived mAbs we have developed may be useful for the rapid and efficient detection of the fast-evolving SARS-CoV-2.
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Affiliation(s)
- Ji Woong Kim
- Department of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Ah Hyun Cho
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Ha Gyeong Shin
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Sung Hoon Jang
- Department of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Su Yeon Cho
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Ye Rim Lee
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Sukmook Lee
- Department of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
- Antibody Research Institute, Kookmin University, Seoul 02707, Republic of Korea
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5
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Kim JW, Min SW, Lee J, Shin HG, Choi HL, Yang HR, Lee JH, Cho YB, Shim H, Lee S. Development and Characterization of Phage-Display-Derived Novel Human Monoclonal Antibodies against the Receptor Binding Domain of SARS-CoV-2. Biomedicines 2022; 10:biomedicines10123274. [PMID: 36552031 PMCID: PMC9775448 DOI: 10.3390/biomedicines10123274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has resulted in an ongoing global pandemic crisis, caused by the life-threatening illness coronavirus disease 2019 (COVID-19). Thus, the rapid development of monoclonal antibodies (mAbs) to cope with COVID-19 is urgently necessary. In this study, we used phage display to develop four human mAbs specific to the receptor-binding domain (RBD) of SARS-CoV-2. Our intensive in vitro functional analyses demonstrated that K102.1, an anti-SARS-CoV-2 RBD-specific mAb, exerted potent neutralizing activity against pseudoviral and live viral infection and the interaction between SARS-CoV-2 RBD and human angiotensin-converting enzyme 2. Monotherapy with K102.1 also revealed the therapeutic potential against SARS-CoV-2 infection in vivo. Further, this study developed a sandwich enzyme-linked immunosorbent assay with a non-competing mAb pair, K102.1 and K102.2, that accurately detected the RBDs of SARS-CoV-2 wild-type and variants with high sensitivity in the picomolar range. These findings suggest that the phage-display-based mAb selection from an established antibody library may be an effective strategy for the rapid development of mAbs against the constantly evolving SARS-CoV-2.
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Affiliation(s)
- Ji Woong Kim
- Department of Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Sung Won Min
- Research Center, SG Medical, Seoul 05548, Republic of Korea
| | - Jichul Lee
- Research Center, SG Medical, Seoul 05548, Republic of Korea
| | - Ha Gyeong Shin
- Department of Biopharmaceutical Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Hye Lim Choi
- Department of Biopharmaceutical Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Ha Rim Yang
- Department of Biopharmaceutical Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Ji Hyun Lee
- Department of Biopharmaceutical Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Yea Bin Cho
- Department of Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Hyunbo Shim
- Department of Life Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Sukmook Lee
- Department of Chemistry, Kookmin University, Seoul 02707, Republic of Korea
- Department of Biopharmaceutical Chemistry, Kookmin University, Seoul 02707, Republic of Korea
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
- Antibody Research Institute, Kookmin University, Seoul 02707, Republic of Korea
- Correspondence:
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Sharma P, Suleman S, Farooqui A, Ali W, Narang J, Malode SJ, Shetti NP. Analytical Methods for Ebola Virus Detection. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107333] [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]
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Blanco OR, Dorta D, Hernández CA, Abreu D, Domínguez AG, Luna Y, Valdivia O, Pérez-Bernal M, Tamayo C, Lemos G, Pasarón IM, Pérez JJ, Benítez L, Bequet-Romero M, Fragas A, Cabrera Y, Pérez ER. Murine monoclonal antibodies against RBD of the SARS-CoV-2 spike protein as useful analytical tools for subunit vaccine development and clinical trials. J Immunol Methods 2022; 500:113195. [PMID: 34843713 PMCID: PMC8619880 DOI: 10.1016/j.jim.2021.113195] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 12/16/2022]
Abstract
COVID-19 pandemic poses a serious threat to human health; it has completely disrupted global stability, making vaccine development an important goal to achieve. Monoclonal antibodies play an important role in subunit vaccines strategies. In this work, nine murine MAbs against the RBD of the SARS-CoV-2 spike protein were obtained by hybridoma technology. Characterization of purified antibodies demonstrated that five of them have affinities in the order of 108 L/mol. Six MAbs showed specific recognition of different recombinant RBD-S antigens in solution. Studies of the additivity index of anti-RBD antibodies, by using a novel procedure to determine the additivity cut point, showed recognition of at least five different epitopes. The MAbs CBSSRBD-S.11 and CBSSRBD-S.8 revealed significant neutralizing capacity against SARS-CoV-2 in an ACE2-RBD binding inhibition assay (IC50 = 85.5pM and IC50 = 122.7pM, respectively) and in a virus neutralizing test with intact SARS-CoV-2 (VN50 = 0.552 nM and VN50 = 4.854 nM, respectively) when D614G strain was used to infect Vero cells. Also CBSSRBD-S.11 neutralized the SARS-CoV-2 strains Alpha and Beta: VN50 = 0.707 nM and VN50 = 0.132 nM, respectively. The high affinity CBSSRBD-S.8 and CBSSRBD-S.7 recognized different epitopes, so they are suitable for the development of a sandwich ELISA to quantitate RBD-S recombinant antigens in biomanufacturing processes, as well as in pharmacokinetic studies in clinical and preclinical trials.
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Affiliation(s)
- Omar R Blanco
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Dayamí Dorta
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Carlos A Hernández
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Daymí Abreu
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Andy G Domínguez
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Yaramis Luna
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Onel Valdivia
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Maylín Pérez-Bernal
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Celia Tamayo
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Gilda Lemos
- Center for Genetic Engineering and Biotechnology, Ave. 31 e/ 158 y 190, Playa, Havana, Cuba
| | - Ivis M Pasarón
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Joel J Pérez
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Liudmila Benítez
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
| | - Mónica Bequet-Romero
- Center for Genetic Engineering and Biotechnology, Ave. 31 e/ 158 y 190, Playa, Havana, Cuba
| | - Anitza Fragas
- Civilian Defense Scientific Research Center, Carretera de Jamaica y Autopista 15 Nacional, San José de las Lajas, Mayabeque, Cuba
| | - Yeosvany Cabrera
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba.
| | - Enrique R Pérez
- Center for Genetic Engineering and Biotechnology of Sancti Spíritus, Circunvalante Norte, Olivos III, Sancti Spíritus, Cuba
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Cassedy A, Parle-McDermott A, O’Kennedy R. Virus Detection: A Review of the Current and Emerging Molecular and Immunological Methods. Front Mol Biosci 2021; 8:637559. [PMID: 33959631 PMCID: PMC8093571 DOI: 10.3389/fmolb.2021.637559] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/01/2021] [Indexed: 12/14/2022] Open
Abstract
Viruses are ubiquitous in the environment. While many impart no deleterious effects on their hosts, several are major pathogens. This risk of pathogenicity, alongside the fact that many viruses can rapidly mutate highlights the need for suitable, rapid diagnostic measures. This review provides a critical analysis of widely used methods and examines their advantages and limitations. Currently, nucleic-acid detection and immunoassay methods are among the most popular means for quickly identifying viral infection directly from source. Nucleic acid-based detection generally offers high sensitivity, but can be time-consuming, costly, and require trained staff. The use of isothermal-based amplification systems for detection could aid in the reduction of results turnaround and equipment-associated costs, making them appealing for point-of-use applications, or when high volume/fast turnaround testing is required. Alternatively, immunoassays offer robustness and reduced costs. Furthermore, some immunoassay formats, such as those using lateral-flow technology, can generate results very rapidly. However, immunoassays typically cannot achieve comparable sensitivity to nucleic acid-based detection methods. Alongside these methods, the application of next-generation sequencing can provide highly specific results. In addition, the ability to sequence large numbers of viral genomes would provide researchers with enhanced information and assist in tracing infections.
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Affiliation(s)
- A. Cassedy
- School of Biotechnology, Dublin City University, Dublin, Ireland
| | | | - R. O’Kennedy
- School of Biotechnology, Dublin City University, Dublin, Ireland
- Hamad Bin Khalifa University, Doha, Qatar
- Qatar Foundation, Doha, Qatar
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Continuous-Flow Separation and Efficient Concentration of Foodborne Bacteria from Large Volume Using Nickel Nanowire Bridge in Microfluidic Chip. MICROMACHINES 2019; 10:mi10100644. [PMID: 31557924 PMCID: PMC6843788 DOI: 10.3390/mi10100644] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/11/2019] [Accepted: 09/23/2019] [Indexed: 01/05/2023]
Abstract
Separation and concentration of target bacteria has become essential to sensitive and accurate detection of foodborne bacteria to ensure food safety. In this study, we developed a bacterial separation system for continuous-flow separation and efficient concentration of foodborne bacteria from large volume using a nickel nanowire (NiNW) bridge in the microfluidic chip. The synthesized NiNWs were first modified with the antibodies against the target bacteria and injected into the microfluidic channel to form the NiNW bridge in the presence of the external arc magnetic field. Then, the large volume of bacterial sample was continuous-flow injected to the channel, resulting in specific capture of the target bacteria by the antibodies on the NiNW bridge to form the NiNW–bacteria complexes. Finally, these complexes were flushed out of the channel and concentrated in a lower volume of buffer solution, after the magnetic field was removed. This bacterial separation system was able to separate up to 74% of target bacteria from 10 mL of bacterial sample at low concentrations of ≤102 CFU/mL in 3 h, and has the potential to separate other pathogenic bacteria from large volumes of food samples by changing the antibodies.
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