1
|
Ling Z, Xu Q, Song Y, Zhang W, Xu H. Fluorescent biosensor based on magnetic separation platform and spore-like breakable organosilica nanocapsules controlled-release carbon dots for the detection of Escherichia coli O157:H7. Talanta 2024; 276:126273. [PMID: 38776775 DOI: 10.1016/j.talanta.2024.126273] [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: 03/31/2024] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/25/2024]
Abstract
Ultrasensitive and rapid detection of low concentration of Escherichia coli O157: H7 (E. coli O157:H7) in food is essential for food safety and public health. In this study, A novel fluorescence signal amplification biosensor based on magnetic separation platform and red fluorescent carbon dots (R-CDs)-encapsulated breakable organosilica nanocapsules (BONs) for ultrasensitive detection of E. coli O157:H7 was established. Wulff-type boronic acid functionalized magnetic nanoparticles (MNPs@B-N/APBA) with broad-spectrum bacterial recognition ability were synthesized for the first time to recognize and capture E. coli O157: H7 in food samples. R-CDs@BONs labeled with anti-E. coli O157:H7 monoclonal antibody (mAb@R-CDs@BONs-NH2) were used as the second recognition element to ensure the specificity for E. coli O157:H7 and form MNPs@B-N/APBA∼ E. coli O157:H7∼mAb@R-CDs@BONs-NH2 sandwich complexes, followed by releasing R-CDs to generate amplified fluorescence response signals for quantitative detection of E. coli O157:H7. The proposed method had a limit of detection with 25 CFU/mL in pure culture and contaminated lettuce samples, which the whole detection process took about 120 min. This fluorescence signal amplification biosensor has the potential to detect other pathogens in food by altering specific antibodies.
Collapse
Affiliation(s)
- Zhiming Ling
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China
| | - Qian Xu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China
| | - Yang Song
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China
| | - Wanqing Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, PR China; International Institute of Food Innovation Co., Ltd., Nanchang University, Nanchang, 330200, PR China.
| |
Collapse
|
2
|
David S, Cârtoc RE, Petcu IC, Polonschii C, Petran A, Turcu R, Bratu D, Gheorghiu M, Gheorghiu E. In situ detection and viability assessment of target microorganisms. Biosens Bioelectron 2024; 245:115821. [PMID: 37984319 DOI: 10.1016/j.bios.2023.115821] [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: 08/07/2023] [Revised: 10/31/2023] [Accepted: 11/05/2023] [Indexed: 11/22/2023]
Abstract
Rapid detection and viability assessment of pathogenic microorganisms, without the need for pre-enrichment steps, is critical in clinical microbiology, food safety, environmental quality assessment, and biosecurity. We demonstrate a powerful analytical concept and the related platform that enable in situ rapid detection, separation, sensitive quantification, and viability assessment of targeted microorganisms (bacteria and fungi) from minimally processed samples. This is based on a novel integration of magneto-affine selection and electrical impedance assay. The entire process, from capture to measurement, is executed using controlled magnetic fields to manipulate magnetic particles (MPs)-microbe affinity-based clusters, in a compact, portable setup equipped with cost-effective, single-use chambers. The system was tested for non-invasive in situ evaluation of model bacteria (Escherichia coli) and fungi (Saccharomyces cerevisiae) within clinically relevant concentration ranges, and it was demonstrated amenable for both commercial and custom MPs, proving its high versatility. The high capture efficiency, the ability to provide analytic results within 30 min directly from unprocessed samples (buffer and synthetic urine), and the high sensitivity in distinguishing live and dead cells in dynamic exposures represent significant advancements over existing assays and recommend the system as a screening tool for pathogen presence and antimicrobial susceptibility in clinical and environmental samples.
Collapse
Affiliation(s)
- Sorin David
- International Centre of Biodynamics, Intrarea Portocalelor Nr. 1B, 060101, Bucharest, Romania
| | - Raluca-Elena Cârtoc
- International Centre of Biodynamics, Intrarea Portocalelor Nr. 1B, 060101, Bucharest, Romania; Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095, Bucharest, Romania
| | - Ionela-Cristina Petcu
- International Centre of Biodynamics, Intrarea Portocalelor Nr. 1B, 060101, Bucharest, Romania; University POLITEHNICA of Bucharest, Splaiul Independenței 313, 060042, Bucharest, Romania
| | - Cristina Polonschii
- International Centre of Biodynamics, Intrarea Portocalelor Nr. 1B, 060101, Bucharest, Romania
| | - Anca Petran
- National Institute R&D of Isotopic and Molecular Technologies, Cluj-Napoca, 400293, Romania
| | - Rodica Turcu
- National Institute R&D of Isotopic and Molecular Technologies, Cluj-Napoca, 400293, Romania
| | - Dumitru Bratu
- International Centre of Biodynamics, Intrarea Portocalelor Nr. 1B, 060101, Bucharest, Romania
| | - Mihaela Gheorghiu
- International Centre of Biodynamics, Intrarea Portocalelor Nr. 1B, 060101, Bucharest, Romania; Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095, Bucharest, Romania
| | - Eugen Gheorghiu
- International Centre of Biodynamics, Intrarea Portocalelor Nr. 1B, 060101, Bucharest, Romania; Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095, Bucharest, Romania.
| |
Collapse
|
3
|
Lee SY, Kim U, Kim Y, Lee SJ, Park EY, Oh SW. Enhanced detection of Listeria monocytogenes using tetraethylenepentamine-functionalized magnetic nanoparticles and LAMP-CRISPR/Cas12a-based biosensor. Anal Chim Acta 2023; 1281:341905. [PMID: 38783743 DOI: 10.1016/j.aca.2023.341905] [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: 08/17/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 05/25/2024]
Abstract
BACKGROUND Listeria monocytogenes is a pathogenic bacterium that can lead to severe illnesses, especially among vulnerable populations. Therefore, the development of rapid and sensitive detection methods is vital to prevent and manage foodborne diseases. In this study, we used tetraethylenepentamine (TEPA)-functionalized magnetic nanoparticles (MNPs) and a loop-mediated isothermal amplification (LAMP)-based CRISPR/Cas12a-based biosensor to concentrate and detect, respectively, L. monocytogenes. LAMP enables DNA amplification at a constant temperature, providing a highly suitable approach for point-of-care testing (POCT). The ability of CRISPR/Cas12a to cleave ssDNA reporter, coupled with TEPA-functionalized MNPs effective attachment to negatively charged bacteria, forms a promising biosensor. RESULTS The LAMP assay was meticulously developed by selecting specific primers and designing crRNA sequences targeting a specific region within the hly gene of L. monocytogenes. We selected primer and refined the amplification conditions by systematically exploring a temperature range from 59 °C to 69 °C, ensuring the attainment of optimal performance. This process was complemented by systematic optimization of LAMP-CRISPR/Cas12a system parameters. In particular, we successfully established the optimal ssDNA reporter concentrations (0-1.2 μM) and Cas12a-mediated trans-cleavage times (0-20 min), crucial components that underpin the effectiveness of the LAMP-CRISPR/Cas12a-based biosensor. For optimizing parameters in capturing L. monocytogenes using TEPA-functionalized MNPs, capture efficiency was significantly enhanced through adjustments in TEPA-functionalized MNPs concentration, incubation times, and magnetic separation duration. Large-volume (20 mL) magnetic separation exhibited a 10-fold sensitivity improvement over conventional methods. Utilizing TEPA-functionalized MNPs, the LAMP-CRISPR/Cas12a-based biosensor achieved detection limits of 100 CFU mL-1 in pure cultures and 100 CFU g-1 in enoki mushrooms. SIGNIFICANCE The integration of this novel technique with the LAMP-CRISPR/Cas12a-based biosensor enhances the accuracy and sensitivity of L. monocytogenes detection in foods, and it can be a promising biosensor for POCT. The 10-fold increase in sensitivity compared to conventional methods makes this approach a groundbreaking advancement in pathogenic bacteria detection for food safety and public health.
Collapse
Affiliation(s)
- So-Young Lee
- Department of Food and Nutrition, Kookmin University, Seoul, 136-702, Republic of Korea
| | - Unji Kim
- Department of Food and Nutrition, Kookmin University, Seoul, 136-702, Republic of Korea
| | - Younggyu Kim
- Lumimac, Inc, B1, 4, Dongnam-ro 2 gil, Songpa-gu, Seoul, Republic of Korea
| | - Seung Jae Lee
- Lumimac, Inc, B1, 4, Dongnam-ro 2 gil, Songpa-gu, Seoul, Republic of Korea
| | - Eun Young Park
- Lumimac, Inc, B1, 4, Dongnam-ro 2 gil, Songpa-gu, Seoul, Republic of Korea
| | - Se-Wook Oh
- Department of Food and Nutrition, Kookmin University, Seoul, 136-702, Republic of Korea.
| |
Collapse
|
4
|
Cheng R, Li L, Zhen S, Liu H, Wu Z, Wang Y, Wang Z. Rapid Detection of Staphylococcus aureus in Milk and Pork via Immunomagnetic Separation and Recombinase Polymerase Amplification. Microbiol Spectr 2023; 11:e0224922. [PMID: 36847574 PMCID: PMC10101137 DOI: 10.1128/spectrum.02249-22] [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: 06/15/2022] [Accepted: 02/04/2023] [Indexed: 03/01/2023] Open
Abstract
Separation processes using immunomagnetic beads (IMBs) are advantageous for the rapid detection of Staphylococcus aureus (S. aureus). Herein, a novel method, based on immunomagnetic separation using IMBs and recombinase polymerase amplification (RPA), was employed to detect S. aureus strains in milk and pork. IMBs were formed by the carbon diimide method using rabbit anti-S. aureus polyclonal antibodies and superparamagnetic carboxyl-Fe3O4 MBs. The average capture efficiency for 2.5 to 2.5 × 105 (CFU)/mL gradient dilution of S. aureus with 6 mg of IMBs within 60 min were a range of 62.74 to 92.75%. The detection sensitivity of the IMBs-RPA method in artificially contaminated samples was 2.5 × 101 CFU/mL. The entire detection process was completed within 2.5 h, including bacteria capture, DNA extraction, amplification, and electrophoresis. Among 20 actual samples, one case of raw milk sample and two cases of pork samples were tested positive using the established IMBs-RPA method, which were verified by the standard S. aureus inspection procedure. Therefore, the novel method shows potential for food safety supervision owing to its short detection time, higher sensitivity, and high specificity. IMPORTANCE Our study established IMBs-RPA method, which simplified the steps of bacteria separation, shortened the detection time, and realized the convenient detection of S. aureus in milk and pork samples. IMBs-RPA method was also suitable for the detection of other pathogens, providing a new method for food safety monitoring and a favorable basis for rapid and early diagnosis of diseases.
Collapse
Affiliation(s)
- Runan Cheng
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Lei Li
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Sihui Zhen
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Honglei Liu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Zhouhui Wu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Yu Wang
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Zhen Wang
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| |
Collapse
|
5
|
David S, Munteanu RE, Tițoiu AM, Petcu IC, Cernat IC, Leancu C, Gheorghiu M, Gheorghiu E. Direct, Rapid Detection of Pathogens from Urine Samples. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15217640. [PMID: 36363232 PMCID: PMC9656601 DOI: 10.3390/ma15217640] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/17/2022] [Accepted: 10/26/2022] [Indexed: 06/02/2023]
Abstract
The problem of rapidly detecting pathogens directly from clinical samples poses significant analytical challenges. Addressing this issue in relation to urinary tract infections, we propose an effective protocol and related immunomagnetic test kits enabling versatile screening for the presence of pathogenic bacteria in unprocessed urine samples. To achieve this, the components of a typical immunomagnetic separation protocol were optimized towards the sensitive assessment of the aggregates formed out of immunomagnetically tagged target pathogens collected from clinical samples. Specifically, a dedicated immunomagnetic material was developed via the functionalization of standardized, micron-sized magnetic beads with generic antibodies against gram-specific bacterial constituents with mannan binding lectin. As such, we demonstrate efficient procedures for achieving the enhanced, specific, and pathogen-mediated cluster formation of these tailored affinity-coated magnetic beads in complex samples. We further show how cluster analysis, in conjunction with the use of nonspecific, inexpensive fluorescent dye, allows for a straightforward optical assessment of the bacterial load directly from urine samples. The optimized sensing protocol and related kits provide, in less than 60 min, qualitative (positive/negative) information on the bacterial load with 85% specificity and 96% sensitivity, which is appropriate to empower clinical microscopy with a new analytic dimension. The procedure is prone to automation, can be conveniently used in clinical microbiology laboratories and, since it preserves the viability of the captured bacteria, can be interfaced with downstream analyses and antimicrobial susceptibility testing. Moreover, the study emphasizes a suite of practical validation assays that are useful for bringing the tool-box of immunomagnetic materials outside the academic laboratory and into real-life applications.
Collapse
Affiliation(s)
- Sorin David
- International Centre of Biodynamics, Intrarea Portocalelor 1B, 060101 Bucharest, Romania
| | - Raluca-Elena Munteanu
- International Centre of Biodynamics, Intrarea Portocalelor 1B, 060101 Bucharest, Romania
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania
| | - Ana-Maria Tițoiu
- International Centre of Biodynamics, Intrarea Portocalelor 1B, 060101 Bucharest, Romania
| | - Ionela-Cristina Petcu
- International Centre of Biodynamics, Intrarea Portocalelor 1B, 060101 Bucharest, Romania
| | - Ioana-Cristina Cernat
- International Centre of Biodynamics, Intrarea Portocalelor 1B, 060101 Bucharest, Romania
| | - Corina Leancu
- Laboratoarele SynLab, Bld. Tudor Vladimirescu nr.29, 050881 Bucharest, Romania
| | - Mihaela Gheorghiu
- International Centre of Biodynamics, Intrarea Portocalelor 1B, 060101 Bucharest, Romania
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania
| | - Eugen Gheorghiu
- International Centre of Biodynamics, Intrarea Portocalelor 1B, 060101 Bucharest, Romania
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania
| |
Collapse
|
6
|
Lee SY, Kim JH, Oh SW. Combination of filtration and immunomagnetic separation based on real-time PCR to detect foodborne pathogens in fresh-cut apple. J Microbiol Methods 2022; 201:106577. [PMID: 36103904 DOI: 10.1016/j.mimet.2022.106577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 08/23/2022] [Accepted: 09/06/2022] [Indexed: 12/27/2022]
Abstract
Rapid detection methods require pre-enrichment culture in order to detect low levels of foodborne pathogens. To rapidly detect foodborne pathogens, enrichment culture processes could be replaced. Filtration and immunomagnetic separation methods have been identified to effectively concentrate and separate target pathogens from foods. In this study, a combination of filtration and immunomagnetic separation (IMS) has enabled the rapid and sensitive detection of foodborne pathogens. The pretreatment method, including separation and concentration procedures, increased sensitivity 10-100-fold. The sensitivity of a combination method using filtration and IMS to detect Escherichia coli O157:H7 and Salmonella enterica subsp. enterica serovar Typhimurium was 100-101 CFU/10 mL. In fresh-cut apples, IMS combined with filtration effectively improved the detection limit of real-time PCR to 2.70 × 101 CFU/g in E. coli O157:H7 and 1.80 × 102 CFU/g in Salmonella. The filtration simplified processing of large-volumes (250 mL) and effectively concentrated pathogens while decreasing immunomagnetic beads used in IMS. Bacterial concentration by IMS combined with filtration increased sensitivity 10-100-fold compared with control. In addition, the application of IMS effectively removed concentrated residual food material (10-15 mg/mL) after filtration, improving relative sensitivity. In conclusion, this method may detect foodborne pathogen in foods such as fresh-cut fruits in a more rapid and sensitive fashion than traditional culture-based methods.
Collapse
Affiliation(s)
- So-Young Lee
- Department of Food and Nutrition, Kookmin University, Seoul 136-702, Republic of Korea
| | - Jin-Hee Kim
- Department of Food and Nutrition, Mokpo National University, Jeonnam, Republic of Korea; Research Institute of Human Ecology, Mokpo National University, Jeonnam, Republic of Korea
| | - Se-Wook Oh
- Department of Food and Nutrition, Kookmin University, Seoul 136-702, Republic of Korea.
| |
Collapse
|
7
|
Dester E, Alocilja E. Current Methods for Extraction and Concentration of Foodborne Bacteria with Glycan-Coated Magnetic Nanoparticles: A Review. BIOSENSORS 2022; 12:bios12020112. [PMID: 35200372 PMCID: PMC8869689 DOI: 10.3390/bios12020112] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 06/01/2023]
Abstract
Rapid and accurate food pathogen detection is an essential step to preventing foodborne illnesses. Before detection, removal of bacteria from the food matrix and concentration to detectable levels are often essential steps. Although many reviews discuss rapid concentration methods for foodborne pathogens, the use of glycan-coated magnetic nanoparticles (MNPs) is often omitted. This review seeks to analyze the potential of this technique as a rapid and cost-effective solution for concentration of bacteria directly from foods. The primary focus is the mechanism of glycan-coated MNP binding, as well as its current applications in concentration of foodborne pathogens. First, a background on the synthesis, properties, and applications of MNPs is provided. Second, synthesis of glycan-coated particles and their theorized mechanism for bacterial adhesion is described. Existing research into extraction of bacteria directly from food matrices is also analyzed. Finally, glycan-coated MNPs are compared to the magnetic separation technique of immunomagnetic separation (IMS) in terms of cost, time, and other factors. At its current state, glycan-coated MNPs require more research to fully identify the mechanism, potential for optimization, and extraction capabilities directly in food matrices. However, current research indicates glycan-coated MNPs are an incredibly cost-effective method for rapid food pathogen extraction and concentration.
Collapse
Affiliation(s)
- Emma Dester
- Nano-Biosensors Lab, Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, MI 48824, USA;
- Global Alliance for Rapid Diagnostics, Michigan State University, East Lansing, MI 48824, USA
| | - Evangelyn Alocilja
- Nano-Biosensors Lab, Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, MI 48824, USA;
- Global Alliance for Rapid Diagnostics, Michigan State University, East Lansing, MI 48824, USA
| |
Collapse
|
8
|
Wang H, Fan Y, Yang Q, Sun X, Liu H, Chen W, Aziz A, Wang S. Boosting the Electrochemical Performance of PI-5-CA/C-SWCNT Nanohybrid for Sensitive Detection of E. coli O157:H7 From the Real Sample. Front Chem 2022; 10:843859. [PMID: 35223774 PMCID: PMC8866332 DOI: 10.3389/fchem.2022.843859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 01/17/2022] [Indexed: 01/04/2023] Open
Abstract
Redox activity is an important indicator for evaluating electrochemical biosensors. In this work, we have successfully polymerized indole-5-carboxylic acid into poly-5-carboxyindole nanomaterials (PI-5-CA), using its superior redox activity, and introduced carboxylated single-walled carbon nanotubes (C-SWCNTs) to synthesize a composite material. Finally, a synthesized composite material was used for the modification of the glass carbon electrode to fabricate the PI-5-CA/C-SWCNTs/GCE-based immunosensor and was successfully applied for the sensitive detection of E. coli O157:H7. The fabricated immunosensor exhibited an outstanding electrocatalytic activity toward the detection of E. coli O157:H7 with a remarkably lowest limit of detection (2.5 CFU/ml, LOD = 3 SD/k, n = 3) and has a wide linear range from 2.98×101 to 2.98×107 CFU/ml. Inspired from the excellent results, the fabricated electrode was applied for the detection of bacteria from real samples (water samples) with a good recovery rate (98.13–107.69%) as well as an excellent stability and specificity. Owing to its simple preparation, excellent performance, and detection time within 30 min, our proposed immunosensor will open a new horizon in different fields for the sensitive detection of bacteria from real samples.
Collapse
Affiliation(s)
- Huan Wang
- Advanced Biomaterials and Tissue Engineering Center, College of Life Science and Technology, Huazhong University of Life Science and Technology, Wuhan, China
| | - Yanmiao Fan
- School of Chemical Science and Engineering Fiber and Polymer Technology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Qiaoli Yang
- Advanced Biomaterials and Tissue Engineering Center, College of Life Science and Technology, Huazhong University of Life Science and Technology, Wuhan, China
| | - Xiaoyu Sun
- Advanced Biomaterials and Tissue Engineering Center, College of Life Science and Technology, Huazhong University of Life Science and Technology, Wuhan, China
| | - Hao Liu
- Advanced Biomaterials and Tissue Engineering Center, College of Life Science and Technology, Huazhong University of Life Science and Technology, Wuhan, China
| | - Wei Chen
- Advanced Biomaterials and Tissue Engineering Center, College of Life Science and Technology, Huazhong University of Life Science and Technology, Wuhan, China
| | - Ayesha Aziz
- Advanced Biomaterials and Tissue Engineering Center, College of Life Science and Technology, Huazhong University of Life Science and Technology, Wuhan, China
- *Correspondence: Ayesha Aziz, ; Shenqi Wang,
| | - Shenqi Wang
- Advanced Biomaterials and Tissue Engineering Center, College of Life Science and Technology, Huazhong University of Life Science and Technology, Wuhan, China
- *Correspondence: Ayesha Aziz, ; Shenqi Wang,
| |
Collapse
|
9
|
Tian Y, Li X, Cai R, Yang K, Gao Z, Yuan Y, Yue T, Wang Z. Aptamer modified magnetic nanoparticles coupled with fluorescent quantum dots for efficient separation and detection of Alicyclobacillus acidoterrestris in fruit juices. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Qiao Z, Cai Q, Fu Y, Lei C, Yang W. Visual and quantitative detection of E. coli O157:H7 by coupling immunomagnetic separation and quantum dot-based paper strip. Anal Bioanal Chem 2021; 413:4417-4426. [PMID: 34013400 DOI: 10.1007/s00216-021-03395-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/21/2021] [Accepted: 05/06/2021] [Indexed: 10/21/2022]
Abstract
Simple and visual quantitative detection of foodborne pathogens can effectively reduce the outbreaks of foodborne diseases. Herein, we developed a simple and sensitive quantum dot (QD)-based paper device for visual and quantitative detection of Escherichia coli (E. coli) O157:H7 based on immunomagnetic separation and nanoparticle dissolution-triggered signal amplification. In this study, E. coli O157:H7 was magnetically separated and labeled with silver nanoparticles (AgNPs), and the AgNP labels can be converted into millions of Ag ions, which subsequently quench the fluorescence of QDs in the paper strip, which along with the readout can be visualized and quantified by the change in length of fluorescent quenched band. Owing to the high capture efficiency and effective signal amplification, as low as 500 cfu mL-1 of E. coli O157:H7 could be easily detected by naked eyes. Furthermore, this novel platform was successfully applied to detect E. coli O157:H7 in spiked milk samples with good accuracy, indicating its potential in the detection of foodborne pathogens in real samples.
Collapse
Affiliation(s)
- Zhaohui Qiao
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315800, Zhejiang, China
| | - Qiqi Cai
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315800, Zhejiang, China
| | - Yingchun Fu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Chunyang Lei
- State Key Laboratory of Chem/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, Zhejiang, China.
| | - Wenge Yang
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, 315800, Zhejiang, China.
| |
Collapse
|
11
|
Xu M, Liu Z, Song Y, Zhao R, Yang Z, Zhao H, Sun X, Gu Y, Yang H. Analysis of drug sensitivity of Escherichia Coli O157H7. Biomed Microdevices 2021; 23:29. [PMID: 33974162 DOI: 10.1007/s10544-021-00565-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2021] [Indexed: 10/21/2022]
Abstract
Sensitive and rapid tests of Escherichia coli drug sensitivity is very important for health of human and animals. An E. coli immunosensor was built based on electrochemical detection and immune detection technologies, through pretreating screen-printed electrodes, and analyzing the optimal reaction concentration of antigen antibody binding with the AC impedance method. Based on the detection system combining the immunosensor and electrochemical workstation, tests were carried out to measure the accuracy of E. coli concentration and drug sensitivity, and error of the detection system was calibrated in accordance with data from the electrochemical workstation. E. coli O157:H7 can be detected in the range of 103 cfu/ml ~ 1012 cfu/ml, and the detection error controlled within 5%. Results from the electrochemical workstation and those from the detection device were consistent, and both demonstrated a greater inhibitory effect of antibiotics on E. coli than on Bacillus subtilis. The electrochemical detection system is highly efficient and accurate, and could be widely applied to E. coli drug sensitivity tests in clinical medicine.
Collapse
Affiliation(s)
- Minzi Xu
- College of engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Zhenyu Liu
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China.
| | - Yanbo Song
- College of life sciences, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Runan Zhao
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Zheng Yang
- College of engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Huijin Zhao
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Xiaobing Sun
- College of engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Yaning Gu
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| | - Huifei Yang
- College of information science and engineering, Shanxi Agricultural University, Jinzhong, 030800, People's Republic of China
| |
Collapse
|
12
|
Wang Z, Cai R, Gao Z, Yuan Y, Yue T. Immunomagnetic separation: An effective pretreatment technology for isolation and enrichment in food microorganisms detection. Compr Rev Food Sci Food Saf 2020; 19:3802-3824. [PMID: 33337037 DOI: 10.1111/1541-4337.12656] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/17/2020] [Accepted: 09/24/2020] [Indexed: 12/24/2022]
Abstract
The high efficiency and accurate detection of foodborne pathogens and spoilage microorganisms in food are a task of great social, economic, and public health importance. However, the contamination levels of target bacteria in food samples are very low. Owing to the background interference of food ingredients and negative impact of nontarget flora, the establishment of efficient pretreatment techniques is very crucial for the detection of food microorganisms. With the significant advantages of high specificity and great separation efficiency, immunomagnetic separation (IMS) assay based on immunomagnetic particles (IMPs) has been considered as a powerful system for the separation and enrichment of target bacteria. This paper mainly focuses on the development of IMS as well as their application in food microorganisms detection. First, the basic principle of IMS in the concentration of food bacteria is presented. Second, the effect of different factors, including the sizes of magnetic particles (MPs), immobilization of antibody and operation parameters (the molar ratio of antibody to MPs, the amount of IMPs, incubation time, and bacteria concentration) on the immunocapture efficiency of IMPs are discussed. The performance of IMPs in different food samples is also evaluated. Finally, the combination of IMS and various kinds of detection methods (immunology-based methods, nucleic acid-based methods, fluorescence methods, and biosensors) to detect pathogenic and spoilage organisms is summarized. The challenges and future trends of IMS are also proposed. As an effective pretreatment technique, IMS can improve the detection sensitivity and shorten their testing time, thus exhibiting broad prospect in the field of food bacteria detection.
Collapse
Affiliation(s)
- Zhouli Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products (YangLing), Ministry of Agriculture, Yangling, Shaanxi, China.,National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, China
| | - Rui Cai
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products (YangLing), Ministry of Agriculture, Yangling, Shaanxi, China.,National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, China
| | - Zhenpeng Gao
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products (YangLing), Ministry of Agriculture, Yangling, Shaanxi, China.,National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products (YangLing), Ministry of Agriculture, Yangling, Shaanxi, China.,National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products (YangLing), Ministry of Agriculture, Yangling, Shaanxi, China.,National Engineering Research Center of Agriculture Integration Test (Yangling), Yangling, Shaanxi, China
| |
Collapse
|
13
|
Detection of E. coli O157:H7 in Food Using Automated Immunomagnetic Separation Combined with Real-Time PCR. Processes (Basel) 2020. [DOI: 10.3390/pr8080908] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In this study, we describe the development of an automated immunomagnetic separation device combined with real-time polymerase chain reaction (PCR) for detecting foodborne bacteria. Immunomagnetic separation (IMS) is a well-known method for the separation and concentration of target bacteria from a large volume of food samples. Magnetic beads functionalized with an antibody provide selectivity for target bacteria such as Escherichia coli O157:H7. Moreover, compared to conventional methods, real-time PCR enables high-sensitivity detection of target bacteria. The method proposed in this study involves three steps: (1) pre-enrichment, (2) automated IMS and concentration of target bacteria, and (3) detection of target bacteria by real-time PCR. Using food samples with a working sample volume as large as 250 mL, the whole process only requires 3 h. As a result, target bacteria in the range of 101–102 colony-forming units per mg or g of sample can be detected in food samples, such as milk, ground beef, and cabbage, by using the proposed approach. We anticipate that the automated IMS system combined with real-time PCR will contribute to the development of a fully automated system for detecting foodborne bacteria and serve as a multi-tester for a variety of bacterial strains in the capacity of a sample-to-answer device in the near future.
Collapse
|
14
|
Yao L, Zheng L, Cai G, Wang S, Wang L, Lin J. A Rapid and Sensitive Salmonella Biosensor Based on Viscoelastic Inertial Microfluidics. SENSORS 2020; 20:s20092738. [PMID: 32403342 PMCID: PMC7248794 DOI: 10.3390/s20092738] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/08/2020] [Accepted: 05/09/2020] [Indexed: 01/03/2023]
Abstract
Salmonella is a main cause of foodborne illnesses and rapid screening of Salmonella is the key to prevent Salmonella outbreaks, however available detection methods either require a long time, or need complex pretreatment, or have low sensitivity. In this study, a microfluidic biosensor was developed for Salmonella detection using viscoelastic inertial microfluidics for separating magnetic bacteria from unbound magnetic nanoparticles (MNPs) and enzyme catalytic colorimetry for amplifying biological signals. The polyclonal antibodies and horseradish peroxidase (HRP) modified MNPs were first used to specifically capture Salmonella to form magnetic HRP-bacteria. Both magnetic HRP-bacteria and unbound MNPs were magnetically separated from background and resuspended in viscoelastic polyvinylpyrrolidone solution as sample flow. When sample flow was injected with polyvinylpyrrolidone sheath flow into a T-shaped microchannel, larger-sized magnetic HRP-bacteria could penetrate the sample flow, however smaller-sized MNPs remained in the sample flow due to weaker inertial lift force and elastic lift force, resulting in continuous-flow separation of magnetic HRP-bacteria. Finally, magnetic HRP-bacteria were collected and concentrated to catalyze tetramethyl benzidine, and absorbance was measured to determine the bacteria. This biosensor was able to detect Salmonella as low as 30 CFU/mL in 1 h and featured the advantages of shorter time due to a one-step immunoreaction, easier extension due to only one antibody and one label, and lower cost due to less expensive materials.
Collapse
|
15
|
Garrido-Maestu A, Azinheiro S, Carvalho J, Espiña B, Prado M. Evaluation and implementation of commercial antibodies for improved nanoparticle-based immunomagnetic separation and real-time PCR for faster detection of Listeria monocytogenes. Journal of Food Science and Technology 2020; 57:4143-4151. [PMID: 33071335 DOI: 10.1007/s13197-020-04450-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 04/06/2020] [Accepted: 04/15/2020] [Indexed: 12/15/2022]
Abstract
L. monocytogenes continues to be a major health issue in Europe, as well as worldwide. Faster methods, not only for detection, but also for sample preparation are of great interest particularly for this slow-growing pathogen. Immunomagnetic separation has been previously reported to be an effective way to concentrate bacteria, and remove inhibitors. In the present study, different commercial antibodies were evaluated to select the most appropriate one, in order to develop a highly specific method. Additionally, magnetic nanoparticles, instead of microparticles, were selected due to their reported advantages (higher surface-volume ration and faster kinetics). Finally, the separation protocol, with a calculated capture efficiency of 95%, was combined with real-time PCR for highly sensitive detection of the concentrated bacteria. The optimized IMS-qPCR allowed to reduce hands-on time in the sample treatment, without affecting the overall performance of the method as a very low limit of detection was still obtained (9.7 CFU/ 25 g) with values for sensitivity, specificity, accuracy, positive and negative predictive values of 100%, resulting in a kappa index of concordance of 1.00. These results were obtained in spiked food samples of different types (chicken, fish, milk, hard and fresh cheese), further demonstrating the applicability of the optimized methodology presented.
Collapse
Affiliation(s)
- Alejandro Garrido-Maestu
- Department of Life Sciences, Nano4Food - Food Quality and Safety Research Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Sarah Azinheiro
- Department of Life Sciences, Nano4Food - Food Quality and Safety Research Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Joana Carvalho
- Department of Life Sciences, Nano4Food - Food Quality and Safety Research Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Begoña Espiña
- Department of Life Sciences, Nano4Food - Food Quality and Safety Research Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Marta Prado
- Department of Life Sciences, Nano4Food - Food Quality and Safety Research Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| |
Collapse
|