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Han X, Lin H, Chen X, Wang L, Zhang Z, Wei X, Sun X, Xie H, Pavase TR, Cao L, Sui J. Amide-containing neoepitopes: the key factor in the preparation of hapten-specific antibodies and a strategy to overcome. Front Immunol 2023; 14:1144020. [PMID: 37342337 PMCID: PMC10277511 DOI: 10.3389/fimmu.2023.1144020] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/15/2023] [Indexed: 06/22/2023] Open
Abstract
For a long time, people have suffered from uncertainty, complexity, and a low success rate in generating and screening antibodies against small molecules, which have become the core bottlenecks of immunochemistry. Here, the influence of antigen preparation on antibody generation was investigated at both molecular and submolecular levels. Neoepitopes (amide-containing neoepitopes) formed in the preparation of complete antigens are one of the most important factors limiting the efficiency of generating hapten-specific antibodies, which was verified by different haptens, carrier proteins, and conjugation conditions. Amide-containing neoepitopes present electron-dense structural components on the surface of prepared complete antigens and, therefore, induce the generation of the corresponding antibody with much higher efficiency than target hapten. Crosslinkers should be carefully selected and not overdosed. According to these results, some misconceptions in the conventional anti-hapten antibody production were clarified and corrected. By controlling the content of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) during the synthesis of immunogen to limit the formation of amide-containing neoepitopes, the efficiency of hapten-specific antibody generation could be significantly improved, which verified the correctness of the conclusion and provided an efficient strategy for antibody preparation. The result of the work is of scientific significance in the preparation of high-quality antibodies against small molecules.
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Affiliation(s)
- Xiangning Han
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Hong Lin
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Xiangfeng Chen
- Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Luefeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Ziang Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Xiaojing Wei
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Xun Sun
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Hanyi Xie
- Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Tushar Ramesh Pavase
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Limin Cao
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
| | - Jianxin Sui
- College of Food Science and Engineering, Ocean University of China, Qingdao, China
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New Advances in Lateral Flow Immunoassay (LFI) Technology for Food Safety Detection. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27196596. [PMID: 36235132 PMCID: PMC9571384 DOI: 10.3390/molecules27196596] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/27/2022] [Accepted: 10/01/2022] [Indexed: 11/09/2022]
Abstract
With the continuous development of China’s economy and society, people and the government have higher and higher requirements for food safety. Testing for food dopants and toxins can prevent the occurrence of various adverse health phenomena in the world’s population. By deploying new and powerful sensors that enable rapid sensing processes, the food industry can help detect trace adulteration and toxic substances. At present, as a common food safety detection method, lateral flow immunochromatography (LFI) is widely used in food safety testing, environmental testing and clinical medical treatment because of its advantages of simplicity, speed, specificity and low cost, and plays a pivotal role in ensuring food safety. This paper mainly focuses on the application of lateral flow immunochromatography and new technologies combined with test strips in food safety detection, such as aptamers, surface-enhanced Raman spectroscopy, quantum dots, electrochemical test strip detection technology, biosensor test strip detection, etc. In addition, sensing principles such as fluorescence resonance energy transfer can also more effective. Different methods have different characteristics. The following is a review of the application of these technologies in food safety detection.
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Yan Y, Shi P, Song W, Bi S. Chemiluminescence and Bioluminescence Imaging for Biosensing and Therapy: In Vitro and In Vivo Perspectives. Theranostics 2019; 9:4047-4065. [PMID: 31281531 PMCID: PMC6592176 DOI: 10.7150/thno.33228] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/25/2019] [Indexed: 12/11/2022] Open
Abstract
Chemiluminescence (CL) and bioluminescence (BL) imaging technologies, which require no external light source so as to avoid the photobleaching, background interference and autoluminescence, have become powerful tools in biochemical analysis and biomedical science with the development of advanced imaging equipment. CL imaging technology has been widely applied to high-throughput detection of a variety of analytes because of its high sensitivity, high efficiency and high signal-to-noise ratio (SNR). Using luciferase and fluorescent proteins as reporters, various BL imaging systems have been developed innovatively for real-time monitoring of diverse molecules in vivo based on the reaction between luciferin and the substrate. Meanwhile, the kinetics of protein interactions even in deep tissues has been studied by BL imaging. In this review, we summarize in vitro and in vivo applications of CL and BL imaging for biosensing and therapy. We first focus on in vitro CL imaging from the view of improving the sensitivity. Then, in vivo CL applications in cells and tissues based on different CL systems are demonstrated. Subsequently, the recent in vitro and in vivo applications of BL imaging are summarized. Finally, we provide the insight into the development trends and future perspectives of CL and BL imaging technologies.
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Waller AW, Lotton JL, Gaur S, Andrade JM, Andrade JE. Evaluation of Micronutrient Sensors for Food Matrices in Resource-Limited Settings: A Systematic Narrative Review. J Food Sci 2018; 83:1792-1804. [PMID: 29928780 DOI: 10.1111/1750-3841.14202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/01/2018] [Indexed: 11/29/2022]
Abstract
In resource-limited settings, mass food fortification is a common strategy to ensure the population consumes appropriate quantities of essential micronutrients. Food and government organizations in these settings, however, lack tools to monitor the quality and compliance of fortified products and their efficacy to enhance nutrient status. The World Health Organization has developed general guidelines known as ASSURED (Affordable, Sensitive, Specific, User-friendly, Rapid and Robust, Equipment-free, and Deliverable to end-users) to aid the development of useful diagnostic tools for these settings. These guidelines assume performance aspects such as sufficient accuracy, reliability, and validity. The purpose of this systematic narrative review is to examine the micronutrient sensor literature on its adherence towards the ASSURED criteria along with accuracy, reliability, and validation when developing micronutrient sensors for resource-limited settings. Keyword searches were conducted in three databases: Web of Science, PubMed, and Scopus and were based on 6-point inclusion criteria. A 16-question quality assessment tool was developed to determine the adherence towards quality and performance criteria. Of the 2,365 retrieved studies, 42 sensors were included based on inclusion/exclusion criteria. Results showed that improvements to the current sensor design are necessary, especially their affordability, user-friendliness, robustness, equipment-free, and deliverability within the ASSURED criteria, and accuracy and validity of the additional criteria to be useful in resource-limited settings. Although it requires further validation, the 16-question quality assessment tool can be used as a guide in the development of sensors for resource-limited settings.
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Affiliation(s)
- Anna W Waller
- Dept. of Food Science and Human Nutrition, Univ. of Illinois at Urbana-Champaign, Urbana, IL, 61801, U.S.A
| | - Jennifer L Lotton
- Dept. of Food Science and Human Nutrition, Univ. of Illinois at Urbana-Champaign, Urbana, IL, 61801, U.S.A
| | - Shashank Gaur
- Dept. of Food Science and Human Nutrition, Univ. of Illinois at Urbana-Champaign, Urbana, IL, 61801, U.S.A.,Innovations, John I. Haas, Yakima, WA, 98902
| | - Jeanette M Andrade
- Dept. of Food Science and Human Nutrition, Univ. of Illinois at Urbana-Champaign, Urbana, IL, 61801, U.S.A.,School of Family and Consumer Sciences, Eastern Illinois Univ., Charleston, IL, 61920, U.S.A
| | - Juan E Andrade
- Div. of Nutritional Sciences, Univ. of Illinois at Urbana-Champaign, Urbana, IL, 61801, U.S.A
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Fully electronic urine dipstick probe for combinatorial detection of inflammatory biomarkers. Future Sci OA 2018; 4:FSO301. [PMID: 29796304 PMCID: PMC5961415 DOI: 10.4155/fsoa-2017-0142] [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: 11/17/2017] [Accepted: 02/20/2018] [Indexed: 12/18/2022] Open
Abstract
Aim An electrochemical urine dipstick probe biosensor has been demonstrated using molybdenum electrodes on nanoporous polyamide substrate for the quantitative detection of two inflammatory protein biomarkers, CRP and IL-6. Materials & methods The electrode interface was characterized using ζ-potential and Fourier transform infrared spectroscopy. Detection of biomarkers was demonstrated by measuring impedance changes associated with the dose concentrations of the two biomarkers. A proof of feasibility of point-of-care implementation of the biosensor was demonstrated using a portable electronics platform. Results & conclusion Limit of detection of 1 pg/ml was achieved for CRP and IL-6 in human urine and synthetic urine buffers. The developed portable hardware demonstrated close correlation with benchtop equipment results.
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Leśniewicz A, Grzesiak M, Żyrnicki W, Borkowska-Burnecka J. Mineral Composition and Nutritive Value of Isotonic and Energy Drinks. Biol Trace Elem Res 2016; 170:485-95. [PMID: 26286964 DOI: 10.1007/s12011-015-0471-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 08/07/2015] [Indexed: 11/27/2022]
Abstract
Several very popular brands of isotonic and energy drinks consumed for fluid and electrolyte supplementation and stimulation of mental or physical alertness were chosen for investigation. Liquid beverages available in polyethylene bottles and aluminum cans as well as products in the form of tablets and powder in sachets were studied. The total concentrations of 21 elements (Ag, Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Na, Ni, P, Pb, Sr, Ti, V, and Zn), both essential and toxic, were simultaneously determined in preconcentrated drink samples by inductively coupled plasma-optical emission spectrometry (ICP-OES) equipped with pneumatic and ultrasonic nebulizers. Differences between the mineral compositions of isotonic and energy drinks were evaluated and discussed. The highest content of Na was found in both isotonic and energy drinks, whereas quite high concentrations of Mg were found in isotonic drinks, and the highest amount of calcium was quantified in energy drinks. The concentrations of B, Co, Cu, Ni, and P were higher in isotonic drinks, but energy drinks contained greater quantities of Ag, Cr, Zn, Mn, and Mo and toxic elements, as Cd and Pb. A comparison of element contents with micronutrient intake and tolerable levels was performed to evaluate contribution of the investigated beverages to the daily diet. The consumption of 250 cm(3) of an isotonic drink provides from 0.32% (for Mn) up to 14.8% (for Na) of the recommended daily intake. For the energy drinks, the maximum recommended daily intake fulfillment ranged from 0.02% (for V) to 19.4 or 19.8% (for Mg and Na).
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Affiliation(s)
- Anna Leśniewicz
- Analytical Chemistry Division, Chemistry Department, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland.
| | - Magdalena Grzesiak
- Analytical Chemistry Division, Chemistry Department, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Wiesław Żyrnicki
- Analytical Chemistry Division, Chemistry Department, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
| | - Jolanta Borkowska-Burnecka
- Analytical Chemistry Division, Chemistry Department, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370, Wrocław, Poland
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Signal Amplification in Field Effect-Based Sandwich Enzyme-Linked Immunosensing by Tuned Buffer Concentration with Ionic Strength Adjuster. Appl Biochem Biotechnol 2016; 179:168-78. [DOI: 10.1007/s12010-016-1986-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/07/2016] [Indexed: 10/22/2022]
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Romero-Arcos M, Garnica-Romo MG, Martinez-Flores HE, Vázquez-Marrufo G, Ramírez-Bon R, González-Hernández J, Barbosa-Cánovas GV. Enzyme Immobilization by Amperometric Biosensors with TiO2 Nanoparticles Used to Detect Phenol Compounds. FOOD ENGINEERING REVIEWS 2015. [DOI: 10.1007/s12393-015-9129-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Prospects for the commercialization of chemiluminescence-based point-of-care and on-site testing devices. Anal Bioanal Chem 2015; 406:5631-7. [PMID: 24658468 DOI: 10.1007/s00216-014-7697-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/10/2014] [Accepted: 02/12/2014] [Indexed: 10/25/2022]
Abstract
Chemiluminescent reactions have found application in a number of commercial point-of-care and on-site testing devices. Notable examples include allergy tests (e.g., MASTpette, OPTIGEN® systems), flu tests (e.g., ZstatFlu®-II), cartridge-based immunoassay systems (FastPack® IP System, PATHFAST®), forensic tests for bloodstains, portable analyzers for biochip array assays (Evidence MultiStat), water quality tests (Eclox), air pollutants (e.g., oxides of nitrogen), and handheld devices for detecting explosives (e.g., E3500 Chemilux®). Many other point-of-care or on-site testing devices with a chemiluminescent end point have been devised on the basis of a variety of formats (e.g., cuvette, cassette, dipstick, test strip, microchip), but most have not progressed beyond a proof-of-principle or prototype stage.
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Thakur MS, Ragavan KV. Biosensors in food processing. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2013; 50:625-41. [PMID: 24425965 PMCID: PMC3671056 DOI: 10.1007/s13197-012-0783-z] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/06/2012] [Accepted: 07/17/2012] [Indexed: 11/28/2022]
Abstract
Optical based sensing systems that measure luminescence, fluorescence, reflectance and absorbance, etc., are some of the areas of applications of optical immunosensors. Immunological methods rely on specific binding of an antibody (monoclonal, polyclonal or engineered) to an antigen. Detection of specific microorganisms and microbial toxins requires immobilization of specific antibodies onto a given transducer that can produce signal upon attachment of typical microbe/microbial toxins. Inherent features of immunosensors such as specificity, sensitivity, speed, ease and on-site analysis can be made use for various applications. Safety of food and environment has been a major concern of food technologists and health scientists in recent years. There exists a strong need for rapid and sensitive detection of different components of foods and beverages along with the food borne and water borne pathogens, toxins and pesticide residues with high specificity. Biosensors present attractive, efficient alternative techniques by providing quick and reliable performances. There is a very good potential for application of biosensors for monitoring food quality and safety in food and bioprocessing industries in India.
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Affiliation(s)
- M. S. Thakur
- Fermentation Technology and Bioengineering Department, CSIR - Central Food Technological Research Institute, Mysore, 570020 India
| | - K. V. Ragavan
- Fermentation Technology and Bioengineering Department, CSIR - Central Food Technological Research Institute, Mysore, 570020 India
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Crosson C, Rossi C. Quartz crystal microbalance immunosensor for the quantification of immunoglobulin G in bovine milk. Biosens Bioelectron 2012; 42:453-9. [PMID: 23238318 DOI: 10.1016/j.bios.2012.11.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 11/07/2012] [Accepted: 11/10/2012] [Indexed: 11/30/2022]
Abstract
The development of precise and sensitive methods for milk analysis remains a challenging task in the milk quality control field. A piezoelectric immunosensor was developed for the real-time quantification of immunoglobulin G (IgG) in bovine milk and colostrum. The sensing surface was designed with rabbit antibovine IgG as the detecting molecule, coupled onto a carboxymethyl dextran-coated gold crystal. Total binding and non-specific binding were measured using a quartz crystal microbalance with dissipation (QCM-D). Conditions of analysis, including ligand immobilization, dilution ratio of milk, salinity, and pH of the dilution buffer were optimized by Doehlert experimental design in order to enhance the detection specificity. The performances of the optimized immunosensor were evaluated. The standard curve was established from QCM-D responses and was linear until an IgG concentration of 2500 ng/mL, with a detection limit of 46 ng/mL. The total assay time is 5 min per sample, including the regeneration step. The intra- and inter-assay variation coefficients were equal to or below 4.7 and 6.1%, respectively. The sensing surface was stable for 100 analyses. This technique was successfully applied to the detection of colostrum addition in milk, with a minimum threshold of 0.1%. This new IgG quantification method is particularly interesting as a cost-effective and time-saving alternative for the dairy analytical laboratories when compared with the existing quantification methods.
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Affiliation(s)
- Cyril Crosson
- OCLA, Maison du Lait 42 Rue Châteaudun, 75009 Paris, France
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Correlation of Kinetics and Conformations of Free and Immobilized Enzymes on Non- and Nanotextured Silicon Biosensor Surfaces. BIONANOSCIENCE 2012. [DOI: 10.1007/s12668-012-0054-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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