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Li L, Zhang J, Jiao Z, Zhou X, Ren L, Wang M. Seamless Integration of Rapid Separation and Ultrasensitive Detection for Complex Biological Samples Using Multistage Annular Functionalized Carbon Nanotube Arrays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312518. [PMID: 38354403 DOI: 10.1002/adma.202312518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/13/2024] [Indexed: 02/16/2024]
Abstract
Efficient separation, enrichment, and detection of bacteria in diverse media are pivotal for identifying bacterial diseases and their transmission pathways. However, conventional bacterial detection methods that split the separation and detection steps are plagued by prolonged processing times. Herein, a multistage annular functionalized carbon nanotube array device designed for the seamless integration of complex biological sample separation and multimarker detection is introduced. This device resorts to the supersmooth fluidity of the liquid sample in the carbon nanotubes interstice through rotation assistance, achieving the ability to quickly separate impurities and capture biomarkers (1 mL sample cost time of 2.5 s). Fluid dynamics simulations show that the reduction of near-surface hydrodynamic resistance drives the capture of bacteria and related biomarkers on the functionalized surface of carbon nanotube in sufficient time. When further assembled as an even detection device, it exhibited fast detection (<30 min), robust linear correlation (101-107 colony-forming units [CFU] mL-1, R2 = 0.997), ultrasensitivity (limit of detection = 1.7 CFU mL-1), and multitarget detection (Staphylococcus aureus, extracellular vesicles, and enterotoxin proteins). Collectively, the material and system offer an expanded platform for real-time diagnostics, enabling integrated rapid separation and detection of various disease biomarkers.
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Affiliation(s)
- Lihuang Li
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Jialing Zhang
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Zhengqi Jiao
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Xi Zhou
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
| | - Lei Ren
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
- State Key Lab of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, P. R. China
| | - Miao Wang
- The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, P. R. China
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Li M, Liu S, Guo S, Liang D, Li M, Zhu Y, Zhao L, Lee JH, Zhao G, Ma Y, Liu Y. Selective purification and rapid quantitative detection of spores using a "stepped" magnetic flow device. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:284-292. [PMID: 38113049 DOI: 10.1039/d3ay01956j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
A study on the inactivation and germination mechanism of spores is very important in the application of spores, as such high-purity spores are the basis of related research. However, spores and vegetative cells of bacteria often coexist, and it is difficult to separate them. In this study, a magnetic flow device for the purification of spores in the culture medium system was developed based on a "stepped" structure with a magnetic force that could absorb vegetative cells with magnetic nanoparticles. The operation process was as follows: first, vancomycin functionalized nanoparticles were used to prepare Van-Fe3O4 NPs, which were then combined with vegetative cells to form a magnetic conjugate. Subsequently, the magnetic conjugate (vegetative cells) flowed through the "stepped" magnetic flow device and was adsorbed. Meanwhile, the spores moved through the channel and were collected. The achieved purity of the collected spores was more than 95%. Further, the number of the obtained spores was quickly quantified using Raman spectroscopy. The entire purification and quantitative process can be completed within 30 min and the limit of detection was 5 CFU mL-1. This study showed outstanding spore purification ability and provided a new method for purification and rapid quantitative detection of spores.
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Affiliation(s)
- Mengya Li
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Shijie Liu
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Shiliang Guo
- Henan Shuanghui Investment & Development Co., Ltd., Luohe, 462000, P. R. China
| | - Dong Liang
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Miaoyun Li
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Yaodi Zhu
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Lijun Zhao
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Jong-Hoon Lee
- Department of Food Science and Biotechnology, Kyonggi University, Suwon 16227, Republic of Korea
| | - Gaiming Zhao
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Yangyang Ma
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
| | - Yanxia Liu
- College of Food Science and Technology, Henan Agricultural University, Zhengzhou, 450002, P. R. China.
- International Joint Laboratory of Meat Processing and Safety in Henan Province, Henan Agricultural University, Zhengzhou, 450002, P. R. China
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He S, Xiong M, Li L, Yan Y, Li J, Feng Z, Li Y, Zhao J, Dong Y, Li X, Chen H, Long C. One-Step Purification of IgE Epitope-Specific Antibody Using Immunomagnetic Beads and Highly Sensitive Detection of Bovine β-Lactoglobulin for the Prediction of Milk Allergenicity in Foods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14068-14078. [PMID: 37679308 DOI: 10.1021/acs.jafc.3c03461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Bovine β-lactoglobulin (BLG) is a common allergen found in milk, and the immunoglobulin E (IgE) epitope plays a crucial role in cow milk allergy. Therefore, targeting the IgE epitope could be useful in accurately detecting BLG and assessing its allergenicity. However, producing an IgE epitope-specific antibody (IgE-EsAb) through traditional methods requires complex and time-consuming procedures. Here, IgE-EsAb was purified from rabbit anti-BLG sera by immunomagnetic beads in one step. Then, a sandwich ELISA (sELISA) based on the IgE-EsAb was developed to detect BLG and predict the potential milk allergenicity in foods. The obtained IgE-EsAb could specifically recognize the target IgE epitope of BLG and exhibited high affinity and specificity. The developed IgE-EsAb-based sELISA demonstrated an ultra-wide linear range of 3.9-1.28 × 105 ng/mL, with a limit of detection of 0.49 ng/mL for BLG. Additionally, the proposed immunoassay showed high specificity and recoveries (91.24-109.61%). The ability of the IgE-EsAb-based sELISA to evaluate the potential milk allergenicity in foods was validated using sera from cow milk allergy patients. These results suggest that immunomagnetic beads are an effective tool for rapidly obtaining the IgE-EsAb, and our proposed sELISA could be a reliable and user-friendly method for monitoring trace amounts of BLG and predicting the potential milk allergenicity of food samples.
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Affiliation(s)
- Shengfa He
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Meng Xiong
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Liming Li
- First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Yan Yan
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Jinyu Li
- First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
| | - Ziling Feng
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Yang Li
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Jiangqiang Zhao
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Yaping Dong
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Xin Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Caiyun Long
- Ganzhou Center for Disease Control and Prevention, Ganzhou 341000, China
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