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Córdova-Espinoza MG, González-Vázquez R, Barron-Fattel RR, Gónzalez-Vázquez R, Vargas-Hernández MA, Albores-Méndez EM, Esquivel-Campos AL, Mendoza-Pérez F, Mayorga-Reyes L, Gutiérrez-Nava MA, Medina-Quero K, Escamilla-Gutiérrez A. Aptamers: A Cutting-Edge Approach for Gram-Negative Bacterial Pathogen Identification. Int J Mol Sci 2024; 25:1257. [PMID: 38279257 PMCID: PMC10817072 DOI: 10.3390/ijms25021257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/04/2024] [Accepted: 01/15/2024] [Indexed: 01/28/2024] Open
Abstract
Early and accurate diagnoses of pathogenic microorganisms is essential to correctly identify diseases, treating infections, and tracking disease outbreaks associated with microbial infections, to develop precautionary measures that allow a fast and effective response in epidemics and pandemics, thus improving public health. Aptamers are a class of synthetic nucleic acid molecules with the potential to be used for medical purposes, since they can be directed towards any target molecule. Currently, the use of aptamers has increased because they are a useful tool in the detection of specific targets. We present a brief review of the use of aptamers to detect and identify bacteria or even some toxins with clinical importance. This work describes the advances in the technology of aptamers, with the purpose of providing knowledge to develop new aptamers for diagnoses and treatment of different diseases caused by infectious microorganisms.
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Affiliation(s)
- María Guadalupe Córdova-Espinoza
- Immunology Laboratory, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico;
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
- Mexican Social Security Institute, Unidad Medica de Alta Especialidad, Hospital de Especialidades, “Dr. Antonio Fraga Mouret”, National Medical Center La Raza, Mexico City 02990, Mexico
| | - Rosa González-Vázquez
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
- Mexican Social Security Institute, Unidad Medica de Alta Especialidad, Hospital de Especialidades, “Dr. Antonio Fraga Mouret”, National Medical Center La Raza, Mexico City 02990, Mexico
| | - Rolando Rafik Barron-Fattel
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
| | - Raquel Gónzalez-Vázquez
- Laboratory of Biotechnology, Department of Biological Systems, Metropolitana Campus Xochimilco, CONAHCYT—Universidad Autonoma, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico;
| | - Marco Antonio Vargas-Hernández
- Research Department, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico; (M.A.V.-H.); (E.M.A.-M.)
| | - Exsal Manuel Albores-Méndez
- Research Department, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico; (M.A.V.-H.); (E.M.A.-M.)
| | - Ana Laura Esquivel-Campos
- Laboratory of Biotechnology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico; (A.L.E.-C.); (F.M.-P.); (L.M.-R.)
| | - Felipe Mendoza-Pérez
- Laboratory of Biotechnology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico; (A.L.E.-C.); (F.M.-P.); (L.M.-R.)
| | - Lino Mayorga-Reyes
- Laboratory of Biotechnology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Alcaldia Coyoacan, Mexico City 04960, Mexico; (A.L.E.-C.); (F.M.-P.); (L.M.-R.)
| | - María Angélica Gutiérrez-Nava
- Laboratory of Microbial Ecology, Department of Biological Systems, Universidad Autonoma Metropolitana, Campus Xochimilco, Calzada del Hueso 1100, Col. Villa Quietud, Coyoacan, Mexico City 04960, Mexico;
| | - Karen Medina-Quero
- Immunology Laboratory, Escuela Militar de Graduados de Sanidad, SEDENA, Mexico City 11200, Mexico;
| | - Alejandro Escamilla-Gutiérrez
- National School of Biological Sciences, National Polytechnic Institute, Laboratory of Medical Bacteriology, Mexico City 11350, Mexico; (R.G.-V.); (R.R.B.-F.)
- Mexican Social Security Institute, Unidad Medica de Alta Especialidad, Microbiology Laboratory, Hospital General “Dr. Gaudencio González Garza”, National Medical Center La Raza, Mexico City 02990, Mexico
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Zhou J, Gui Y, Lv X, He J, Xie F, Li J, Cai J. Nanomaterial-Based Fluorescent Biosensor for Food Safety Analysis. BIOSENSORS 2022; 12:1072. [PMID: 36551039 PMCID: PMC9775463 DOI: 10.3390/bios12121072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Food safety issues have become a major threat to public health and have garnered considerable attention. Rapid and effective detection methods are crucial for ensuring food safety. Recently, nanostructured fluorescent materials have shown considerable potential for monitoring the quality and safety of food because of their fascinating optical characteristics at the nanoscale. In this review, we first introduce biomaterials and nanomaterials for food safety analysis. Subsequently, we perform a comprehensive analysis of food safety using fluorescent biosensors based on nanomaterials, including mycotoxins, heavy metals, antibiotics, pesticide residues, foodborne pathogens, and illegal additives. Finally, we provide new insights and discuss future approaches for the development of food safety detection, with the aim of improving fluorescence detection methods for the practical application of nanomaterials to ensure food safety and protect human health.
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Affiliation(s)
- Jiaojiao Zhou
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Yue Gui
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Xuqin Lv
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jiangling He
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Fang Xie
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jinjie Li
- Institute of System and Engineering, Beijing 100010, China
| | - Jie Cai
- National R&D Center for Se-Rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-Rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
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3
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Analysis of Pathogenic Vibrio Contamination in Marine Products along China Based on Fluorescence Quantitative PCR. J FOOD QUALITY 2022. [DOI: 10.1155/2022/9572064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
At present, aquatic product pollution has become the main root of frequent food safety problems and causes economic losses. Vibrio is one of the main pathogens causing foodborne diseases. In this study, in order to uncover the pollution status of pathogenic Vibrio in the marine products of China, a total of 646 aquatic products were collected and analyzed from 10 coastal cities in China. Five kinds of pathogenic Vibrio were separated from these samples and monitored to explore the relationship between pollution and the pathogen. Real-time fluorescence quantitative PCR was adopted to detect foodborne Vibrio quantitatively in marine aquatic products. Aquatic pathogenic Vibrio was collected in different regions, different types of aquatic products, and different sampling places, and the difference in detection rate was statistically significant through statistical analysis. This study made a frame for the pollution degree of pathogenic Vibrio in marine products in China and established the dominant flora of pathogenic Vibrio in different types of aquatic products, which provides a theoretical basis for food safety supervision departments to take targeted prevention and control measures.
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Liu M, Yue F, Kong Q, Liu Z, Guo Y, Sun X. Aptamers against Pathogenic Bacteria: Selection Strategies and Apta-assay/Aptasensor Application for Food Safety. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5477-5498. [PMID: 35471004 DOI: 10.1021/acs.jafc.2c01547] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Pathogenic bacteria are primarily kinds of detrimental agents that cause mankind illness via contaminated food with traits of multiple types, universality, and low content. In view of the detection demands for rapidity, aptamer recognition factors emerged as a substitution for antibodies, which are short single strands of nucleic acid selected via in vitro. They display certain superiorities over antibodies, such as preferable stability, liable modification, and cost-efficiency. Taking advantage of the situation, numerous aptamers against pathogenic bacteria have been successfully selected and applied, yet there are still restrictions on commercial availability. In this review, the strategies/approaches to key sections in pathogen aptamers SELEX and post-SELEX are summarized and sorted out. Recently, optical, electrochemical, and piezoelectric aptamer-based assays or sensors dedicated to pathogen detection have been critically reviewed. Ultimately, the existing challenges and future trends in this field are proposed to further promote development prospects.
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Affiliation(s)
- Mengyue Liu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
| | - Fengling Yue
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
| | - Qianqian Kong
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
| | - Zhanli Liu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
| | - Yemin Guo
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
| | - Xia Sun
- School of Agricultural Engineering and Food Science, Shandong University of Technology, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Shandong Provincial Engineering Research Center of Vegetable Safety and Quality Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
- Zibo City Key Laboratory of Agricultural Product Safety Traceability, 266 Xincun Xilu, Zibo, Shandong 255049, People's Republic of China
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Fan Q, Yuan Y, Zhang T, Song W, Sheng Q, Yue T. Inhibitory effects of lactobionic acid on Vibrio parahaemolyticus planktonic cells and biofilms. Food Microbiol 2022; 103:103963. [DOI: 10.1016/j.fm.2021.103963] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 12/21/2022]
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6
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Bao Y, Zhu D, Zhao Y, Li X, Gu C, Yu H. Selection and identification of high-affinity aptamer of Kunitz trypsin inhibitor and their application in rapid and specific detection. Food Sci Nutr 2022; 10:953-963. [PMID: 35282009 PMCID: PMC8907715 DOI: 10.1002/fsn3.2729] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 12/21/2022] Open
Abstract
Kunitz trypsin inhibitor (KTI), a harmful protein, seriously affects food hygiene and safety. Therefore, a sensitive, efficient, and rapid method for KTI detection is urgently needed. Aptamers are short and single-stranded (ss) DNA that recognize target molecules with high affinity. This work used graphene oxide-SELEX (GO-SELEX) to screen KTI aptamers. The positive and reverse screening was designed to ensure the high specificity and affinity of the selected aptamers. After 10 rounds of screening, multiple nucleic acid chains were obtained, and the chains were sequenced. Three aptamers with better affinity were obtained, and the values of the dissociation constant (K d) were calculated to be 52.6 nM, 22.7 nM, and 67.9 nM, respectively. Finally, a colorimetric aptamer biosensor based on gold nanoparticles (AuNPs) was constructed. The biosensor exhibited a broader linear range of 30-750 ng/ml, with a lower detection limit of 18 ng/ml, and the spiked recovery rate was between 98.2% and 103.3%. This experiment preliminary demonstrated the potential of the application of KTI aptamer in the real sample tests.
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Affiliation(s)
- Yunxiang Bao
- College of Food Science and EngineeringJilin Agricultural UniversityChangchunChina
| | - Dengzhao Zhu
- College of Food Science and EngineeringJilin Agricultural UniversityChangchunChina
| | - Yang Zhao
- College of Food Science and EngineeringJilin Agricultural UniversityChangchunChina
- Division of Soybean ProcessingSoybean Research & Development CenterChinese Agricultural Research SystemChangchunChina
| | - Xinzhu Li
- College of Food Science and EngineeringJilin Agricultural UniversityChangchunChina
| | - Chunmei Gu
- College of Food Science and EngineeringJilin Agricultural UniversityChangchunChina
| | - Hansong Yu
- College of Food Science and EngineeringJilin Agricultural UniversityChangchunChina
- Division of Soybean ProcessingSoybean Research & Development CenterChinese Agricultural Research SystemChangchunChina
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Yu Q, Li M, Liu M, Huang S, Wang G, Wang T, Li P. Selection and Characterization of ssDNA Aptamers Targeting Largemouth Bass Virus Infected Cells With Antiviral Activities. Front Microbiol 2022; 12:785318. [PMID: 34975807 PMCID: PMC8718865 DOI: 10.3389/fmicb.2021.785318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/19/2021] [Indexed: 11/13/2022] Open
Abstract
Largemouth bass virus (LMBV) is one of the most devastating viral pathogens in farmed Largemouth bass. Aptamers are novel molecule probes and have been widely applied in the field of efficient therapeutic and diagnostic agents development. LMBV-infected fathead minnow cells (LMBV-FHM) served as target cells in this study, and three DNA aptamers (LBVA1, LBVA2, and LBVA3) were generated against target cells by SELEX technology. The selected aptamers could specifically bind to LMBV-FHM cells, with rather high calculated dissociation constants (Kd) of 890.09, 517.22, and 249.31 nM for aptamers LBVA1, LBVA2, and LBVA3, respectively. Three aptamers displayed efficient antiviral activities in vitro. It indicates that the selected aptamers have great potentials in developing efficient anti-viruses treatments. The targets of aptamers LBVA1, LBVA2, and LBVA3 could be membrane proteins on host cells. The targets of aptamers (LBVA1, LBVA2, and LBVA3) come out on the cells surface at 8, 10, 8 h post-infection. As novel molecular probes for accurate recognition, aptamer LBVA3 could detect LMBV infection in vitro and in vivo, it indicates that the selected aptamers could be applied in the development of rapid detective technologies, which are characterized by high sensitivity, accuracy, and easy operation.
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Affiliation(s)
- Qing Yu
- Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
| | - Mengmeng Li
- Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China.,College of Life Science, Henan Normal University, Xinxiang, China
| | - Mingzhu Liu
- Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China.,Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, China
| | - Shuaishuai Huang
- Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China.,Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, College of Marine Sciences, Beibu Gulf University, Qinzhou, China
| | - Gaoxue Wang
- Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China
| | - Taixia Wang
- College of Life Science, Henan Normal University, Xinxiang, China
| | - Pengfei Li
- Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Sciences, Nanning, China.,Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, China.,Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, College of Marine Sciences, Beibu Gulf University, Qinzhou, China
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Li G, Wei Y, Ma L, Mao Y, Xun R, Deng Y. A novel highly sensitive soy aptasensor for antigen β-conglycinin determination. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3059-3067. [PMID: 34137405 DOI: 10.1039/d1ay00701g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
β-Conglycinin, composed of three subunits (α', α and β), is the main allergen of soy protein which can cause severe allergic reactions, such as diarrhea, decreased growth performance and even death. Among them, the β subunit is more stable and difficult to remove, being one of the main nutritional inhibitors, which can be used to evaluate the concentration of β-conglycinin. However, there is no effective, accurate method for its β subunit rapid detection. Herein, we have successfully selected a high affinity β subunit aptamer (Kd = 6.9 nM) and developed a highly sensitive aptasensor. The aptasensor displayed high specificity and the β subunit at a concentration of 70-350 nM could be detected with a detection limit of 4.48 nM (3S/N). In addition, the recoveries of β subunit were more than 90%, demonstrating its practical properties for complicated conditions such as food quality control and disease diagnosis, without requiring expensive and sophisticated equipment.
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Affiliation(s)
- Guohui Li
- National Engineering Laboratory for Cereal Fermentation Technology (NELCF), Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China.
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9
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Qin M, Ma X, Fan S, Wu H, Yan W, Tian X, Lu J, Lyu M, Wang S. Rapid detection of Pseudomonas aeruginosa using a DNAzyme-based sensor. Food Sci Nutr 2021; 9:3873-3884. [PMID: 34262744 PMCID: PMC8269565 DOI: 10.1002/fsn3.2367] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/15/2021] [Accepted: 05/17/2021] [Indexed: 11/22/2022] Open
Abstract
In the present study, a DNAzyme was screened in vitro through the use of a DNA library and crude extracellular mixture (CEM) of Pseudomonas aeruginosa. Following eight rounds of selection, a DNAzyme termed PAE-1 was obtained, which displayed high rates of cleavage with strong specificity. A fluorescent biosensor was designed for the detection of P. aeruginosa in combination with the DNAzyme. A detection limit as low as 1.2 cfu/ml was observed. Using proteases and filtration, it was determined that the target was a protein with a molecular weight of 10 kDa-50 kDa. The DNAzyme was combined with a polystyrene board to construct a simple indicator plate sensor which produced a color that identified the target within 10 min. The results were reliable when tap water and food samples were tested. The present study provides a novel experimental strategy for the development of sensors based on a DNAzyme to rapidly detect P. aeruginosa in the field.
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Affiliation(s)
- Mingcan Qin
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Xiaoyi Ma
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Shihui Fan
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Hangjie Wu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Wanli Yan
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Xiaopeng Tian
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Jing Lu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Mingsheng Lyu
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
| | - Shujun Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine BiotechnologyJiangsu Ocean UniversityLianyungangChina
- Co‐Innovation Center of Jiangsu Marine Bio‐industry TechnologyJiangsu Ocean UniversityLianyungangChina
- Jiangsu Marine Resources Development Research InstituteLianyungangChina
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10
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Selective Capture and Identification of Methicillin-Resistant Staphylococcus aureus by Combining Aptamer-Modified Magnetic Nanoparticles and Mass Spectrometry. Int J Mol Sci 2021; 22:ijms22126571. [PMID: 34207373 PMCID: PMC8234742 DOI: 10.3390/ijms22126571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022] Open
Abstract
A nucleic acid aptamer that specifically recognizes methicillin-resistant Staphylococcus aureus (MRSA) has been immobilized on magnetic nanoparticles to capture the target bacteria prior to mass spectrometry analysis. After the MRSA species were captured, they were further eluted from the nanoparticles and identified using matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS). The combination of aptamer-based capture/enrichment and MS analysis of microorganisms took advantage of the selectivity of both techniques and should enhance the accuracy of MRSA identification. The capture and elution efficiencies for MRSA were optimized by examining factors such as incubation time, temperature, and elution solvents. The aptamer-modified magnetic nanoparticles showed a capture rate of more than 90% under the optimized condition, whereas the capture rates were less than 11% for non-target bacteria. The as-prepared nanoparticles exhibited only a 5% decrease in the capture rate and a 9% decrease in the elution rate after 10 successive cycles of utilization. Most importantly, the aptamer-modified nanoparticles revealed an excellent selectivity towards MRSA in bacterial mixtures. The capture of MRSA at a concentration of 102 CFU/mL remained at a good percentage of 82% even when the other two species were at 104 times higher concentration (106 CFU/mL). Further, the eluted MRSA bacteria were successfully identified using MALDI mass spectrometry.
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