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Surti PV, Kim MW, Phan LMT, Kailasa SK, Mungray AK, Park JP, Park TJ. Progress on dot-blot assay as a promising analytical tool: Detection from molecules to cells. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116736] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Sanders EC, Sen SR, Gelston AA, Santos AM, Luo X, Bhuvan K, Tang DY, Raston CL, Weiss GA. Under-5-Minute Immunoblot Assays by Vortex Fluidic Device Acceleration. Angew Chem Int Ed Engl 2022; 61:e202202021. [PMID: 35333430 PMCID: PMC9156566 DOI: 10.1002/anie.202202021] [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: 02/06/2022] [Indexed: 11/09/2022]
Abstract
Unlocking the potential of personalized medicine in point-of-care settings requires a new generation of biomarker and proteomic assays. Ideally, assays could inexpensively perform hundreds of quantitative protein measurements in parallel at the bedsides of patients. This goal greatly exceeds current capabilities. Furthermore, biomarker assays are often challenging to translate from benchtop to clinic due to difficulties achieving and assessing the necessary selectivity, sensitivity, and reproducibility. To address these challenges, we developed an efficient (<5 min), robust (comparatively lower CVs), and inexpensive (decreasing reagent use and cost by >70 %) immunoassay method. Specifically, the immunoblot membrane is dotted with the sample and then developed in a vortex fluidic device (VFD) reactor. All assay steps-blocking, binding, and washing-leverage the unique thin-film microfluidics of the VFD. The approach can accelerate direct, indirect, and sandwich immunoblot assays. The applications demonstrated include assays relevant to both the laboratory and the clinic.
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Affiliation(s)
- Emily C. Sanders
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Sanjana R. Sen
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Aidan A. Gelston
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Alicia M. Santos
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Xuan Luo
- Flinders Institute for Nanoscale Sciences and Technology, Flinders University, Adelaide, SA 5042 (AU)
| | - Keertna Bhuvan
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Derek Y. Tang
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
| | - Colin L. Raston
- Flinders Institute for Nanoscale Sciences and Technology, Flinders University, Adelaide, SA 5042 (AU)
| | - Gregory A. Weiss
- Departments of Chemistry, Molecular Biology and Biochemistry, and Pharmaceutical Sciences, University of California, Irvine, Irvine, CA 92697-2025 (USA)
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Weiss GA, Sanders EC, Sen SR, Gelston AA, Santos AM, Luo X, Bhuvan K, Tang DY, Raston CL. Under‐5‐Minute Immunoblot Assays by Vortex Fluidic Device Acceleration. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gregory Alan Weiss
- University of California, Irvine Department of Chemistry 1102 Natural Sciences 2 92697-2025 Irvine UNITED STATES
| | | | - Sanjana R. Sen
- University of California Irvine Molecular Biology and Biochemistry UNITED STATES
| | | | | | - Xuan Luo
- Flinders University aFlinders Institute for Nanoscale Science and Technology AUSTRALIA
| | | | - Derek Y. Tang
- University of California Irvine Chemistry UNITED STATES
| | - Colin L. Raston
- Flinders University aFlinders Institute for Nanoscale Science and Technology UNITED STATES
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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: 55] [Impact Index Per Article: 18.3] [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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Tarantine C, Falconar AKI, Romero-Vivas CME. Evaluation of the National Case Report Form for dengue and timely case notification before the co-circulation of multiple arboviruses in Barranquilla, Colombia. Rev Salud Publica (Bogota) 2020; 20:745-751. [PMID: 33206900 DOI: 10.15446/rsap.v20n6.68957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 08/30/2018] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE To evaluate the case report forms and times elapsed between the surveillance steps for dengue virus (DENV) infection in a large Colombian city before the emergence of other arbovirus epidemics. MATERIALS AND METHODS The descriptive epidemiology of DENV infection cases was analyzed from 2009 to 2013. The completeness of the case report forms filed at the Primary Units of Data Generation (PUDG) were evaluated, as well as the accuracy and suitability of the tests (PPV: positive predictive value). The average time-lags between each step were then calculated. RESULTS There were 7.3, 12.38, 4.66, 6.25 and 29.9 annual cases of dengue infection per 10 000 inhabitants in 2009 to 2013, respectively. In this study, only 57.76% of the cases were classified correctly by the physicians and 26.32% of them were questioned about their home conditions and whether their family/friends had similar symptoms. Patients visited a clinic/hospital on average 4.76 days after developing symptoms and the health system was notified on average 1.75 days later, while 70.6% of them were reported within the one-day target period. There were only minor changes in case reporting times even during a DENV epidemic. Some (12.85%) of the case forms were later modified (average 16.7 days). In the period 2009-2013, the IgM confirmed PPV was 58.60%, while 20 mandatory criteria were absent on more than 25% of the forms. CONCLUSIONS The system was accurate, simple, flexible, stable and acceptable, but a number of ways are suggested to improve this case detection and reporting system.
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Affiliation(s)
- Catherine Tarantine
- CT: MD. M. Sc. London School of Hygiene and Tropical Medicine, London, United Kingdom.
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Gengenbach BB, Opdensteinen P, Buyel JF. Robot Cookies - Plant Cell Packs as an Automated High-Throughput Screening Platform Based on Transient Expression. Front Bioeng Biotechnol 2020; 8:393. [PMID: 32432097 PMCID: PMC7214789 DOI: 10.3389/fbioe.2020.00393] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/08/2020] [Indexed: 12/22/2022] Open
Abstract
The high-throughput screening of recombinant protein expression is advantageous during early process development because it allows the identification of optimal expression constructs and process conditions. Simple screening platforms based on microtiter plates are available for microbes and animal cells, but this was not possible for plants until the development of plant cell packs (PCPs), also known as “cookies,” which provide a versatile and scalable screening tool for recombinant protein production. PCPs are prepared from plant cell suspension cultures by removing the medium and molding the biomass. PCPs can be cast into 96-well plates for high-throughput screening, but the manual handling effort currently limits the throughput to ∼500 samples per day. We have therefore integrated the PCP method with a fully automated laboratory liquid-handling station. The “robot cookies” can be prepared and infiltrated with Agrobacterium tumefaciens by centrifugation, minimizing operator handling and reducing the likelihood of errors during repeated runs, such as those required in a design of experiments approach. The accumulation of fluorescent protein in the cytosol, apoplast, endoplasmic reticulum or plastids is easily detected using an integrated plate reader, reducing the inter-experimental variation to <5%. We also developed a detergent-based chemical lysis method for protein extraction in a 96-well format, which was adapted for automated downstream processing using miniaturized columns allowing subsequent protein analysis. The new automated method reduces the costs of the platform to <0.5 € per PCP infiltration (a saving of >50%) and facilitates a five-fold increase in throughput to >2500 samples per day.
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Affiliation(s)
- Benjamin Bruno Gengenbach
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany.,Institute for Molecular Biotechnology, RWTH Aachen University, Aachen, Germany
| | - Patrick Opdensteinen
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany.,Institute for Molecular Biotechnology, RWTH Aachen University, Aachen, Germany
| | - Johannes Felix Buyel
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany.,Institute for Molecular Biotechnology, RWTH Aachen University, Aachen, Germany
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Chanakankun R, Proungvitaya T, Chua-On D, Limpaiboon T, Roytrakul S, Jusakul A, Titapun A, Jarearnrat A, Proungvitaya S. Serum coiled-coil domain containing 25 protein as a potential screening/diagnostic biomarker for cholangiocarcinoma. Oncol Lett 2019; 19:930-942. [PMID: 31897206 PMCID: PMC6924184 DOI: 10.3892/ol.2019.11162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 10/16/2019] [Indexed: 12/16/2022] Open
Abstract
Coiled-coil domain containing 25 (CCDC25) was previously reported to be upregulated in cholangiocarcinoma (CCA) tissues compared with adjacent normal tissues. The present study investigated whether serum CCDC25 level may be used as a potential marker for the diagnosis of CCA. Bioinformatics tools were used to reveal that CCDC25 is secreted into plasma/serum via a non-conventional pathway, which secretes proteins independently from the endoplasmic reticulum/golgi complex, but is yet to be fully elucidated. Subsequently, the CCDC25 levels in the sera of patients with CCA (n=141), patients with benign biliary disease (BBD; n=53) and healthy controls (HC; n=72) were measured using a quantitative dot blot assay based on the standard curve created using recombinant CCDC25 protein. The results demonstrated that the serum CCDC25 level in the CCA group (0.28±0.06 ng/µl) was significantly higher compared with that in the BBD (0.15±0.03 ng/µl) or HC (0.0017±0.0008 ng/µl) groups. Serum CCDC25 level provided an improved resolution (P=0.0001) compared with carcinoembryonic antigen (P=0.098) or carbohydrate antigen 19-9 (P=0.271) for the differential diagnosis between BBD and CCA. Receiver operating characteristic curve analysis revealed high sensitivity and specificity of serum CCDC25 level to differentiate between patients with CCA and HC (93.0 and 100%, respectively), and also to differentiate between patients with CCA and patients with BBD (75.0 and 84.0%, respectively). CCDC25 expression was further investigated in 23 CCA tissues, and CCDC25 expression in cancer tissues was moderately correlated with the serum CCDC25 level (r2=0.52, P=0.01). Among patients with CCA, serum CCDC25 level was significantly higher in patients with non-metastatic CCA compared with patients with metastatic CCA. Correspondingly, a higher serum CCDC25 level was associated with a longer overall survival time in patients with CCA. In conclusion, serum CCDC25 level may be a promising screening and diagnostic marker for the differential diagnosis of CCA.
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Affiliation(s)
- Ravinnipa Chanakankun
- Centre of Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
| | - Tanakorn Proungvitaya
- Centre of Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
| | - Daraporn Chua-On
- Centre of Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
| | - Temduang Limpaiboon
- Centre of Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute, Faculty of Medicine, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
| | - Sittiruk Roytrakul
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Khlong Luang, Pathumthani 12120, Thailand
| | - Apinya Jusakul
- Centre of Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute, Faculty of Medicine, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
| | - Attapol Titapun
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
| | - Apiwat Jarearnrat
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
| | - Siriporn Proungvitaya
- Centre of Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen 40002, Thailand.,Cholangiocarcinoma Research Institute, Faculty of Medicine, Khon Kaen University, Muang, Khon Kaen 40002, Thailand
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Gelanew T, Hunsperger E. Development and characterization of serotype-specific monoclonal antibodies against the dengue virus-4 (DENV-4) non-structural protein (NS1). Virol J 2018; 15:30. [PMID: 29409531 PMCID: PMC5801815 DOI: 10.1186/s12985-018-0925-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 01/09/2018] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Dengue, caused by one of the four serologically distinct dengue viruses (DENV-1 to - 4), is a mosquito-borne disease of serious global health significance. Reliable and cost-effective diagnostic tests, along with effective vaccines and vector-control strategies, are highly required to reduce dengue morbidity and mortality. Evaluation studies revealed that many commercially available NS1 antigen (Ag) tests have limited sensitivity to DENV-4 serotype compared to the other three serotypes. These studies indicated the need for development of new NS1 Ag detection test with improved sensitivity to DENV-4. An NS1 capture enzyme linked immunoassay (ELISA) specific to DENV-4 may improve the detection of DENV-4 cases worldwide. In addition, a serotype-specific NS1 Ag test identifies both DENV and the infecting serotype. METHODS In this study, we used a small-ubiquitin-like modifier (SUMO*) cloning vector to express a SUMO*-DENV-4 rNS1 fusion protein to develop NS1 DENV-4 specific monoclonal antibodies (MAbs). These newly developed MAbs were then optimized for use in an anti-NS1 DENV-4 capture ELISA. The serotype specificity and sensitivity of this ELISA was evaluated using (i) supernatants from DENV (1-4)-infected Vero cell cultures, (ii) rNS1s from all the four DENV (1-4) and, (iii) rNS1s of related flaviviruses (yellow fever virus; YFV and West Nile virus; WNV). RESULTS From the evaluation studies of the newly developed MAbs, we identified three DENV-4 specific anti-NS1 MAbs: 3H7A9, 8A6F2 and 6D4B10. Two of these MAbs were optimal for use in a DENV-4 serotype-specific NS1 capture ELISA: MAb 8A6F2 as the capture antibody and 6D4B10 as a detection antibody. CONCLUSION This ELISA was sensitive and specific to DENV-4 with no cross-reactivity to other three DENV (1-3) serotypes and other heterologous flaviviruses. Taken together these data indicated that our MAbs are useful reagents for the development of DENV-4 immunodiagnostic tests.
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Affiliation(s)
- Tesfaye Gelanew
- Dengue Branch, Division of Vector-Borne Diseases, National Center for Enteric and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention (CDC), San Juan, PR, USA
| | - Elizabeth Hunsperger
- Dengue Branch, Division of Vector-Borne Diseases, National Center for Enteric and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention (CDC), San Juan, PR, USA.
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Kathiresan E, Paramasivan R, Thenmozhi V, Das A, Dhananjeyan KJ, Sankar SG, Jerald Leo SV, Rathnapraba S, Vennison SJ. Development and multi-use applications of dengue NS1 monoclonal antibody for early diagnosis. RSC Adv 2017. [DOI: 10.1039/c6ra24763f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Swift and early diagnosis of dengue is important for case management and epidemiological purpose.
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Affiliation(s)
- E. Kathiresan
- Department of Biotechnology
- Anna University
- Tiruchirappalli 620 024
- India
| | - R. Paramasivan
- Centre for Research in Medical Entomology (CRME)
- Indian Council of Medical Research
- Madurai 625 002
- India
| | - V. Thenmozhi
- Centre for Research in Medical Entomology (CRME)
- Indian Council of Medical Research
- Madurai 625 002
- India
| | - Aparup Das
- Centre for Research in Medical Entomology (CRME)
- Indian Council of Medical Research
- Madurai 625 002
- India
| | - K. J. Dhananjeyan
- Centre for Research in Medical Entomology (CRME)
- Indian Council of Medical Research
- Madurai 625 002
- India
| | - S. Gowri Sankar
- Centre for Research in Medical Entomology (CRME)
- Indian Council of Medical Research
- Madurai 625 002
- India
| | - S. Victor Jerald Leo
- Centre for Research in Medical Entomology (CRME)
- Indian Council of Medical Research
- Madurai 625 002
- India
| | - S. Rathnapraba
- Department of Animal Biotechnology
- Madras Veterinary College
- Tamil Nadu Veterinary and Animal Sciences University
- Chennai
- India
| | - S. John Vennison
- Department of Biotechnology
- Anna University
- Tiruchirappalli 620 024
- India
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