101
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Xu J, Qu K, Zhao J, Jian X, Gao Z, Xu J, Song YY. In Situ Monitoring of the “Point Discharge” Induced Antibacterial Process by the Onsite Formation of a Raman Probe. Anal Chem 2019; 92:2323-2330. [DOI: 10.1021/acs.analchem.9b05265] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jing Xu
- College of Science, Northeastern University, Shenyang 110004, China
| | - Kuanzhi Qu
- College of Science, Northeastern University, Shenyang 110004, China
| | - Junjian Zhao
- College of Science, Northeastern University, Shenyang 110004, China
| | - Xiaoxia Jian
- College of Science, Northeastern University, Shenyang 110004, China
| | - Zhida Gao
- College of Science, Northeastern University, Shenyang 110004, China
| | - Jingwen Xu
- College of Science, Northeastern University, Shenyang 110004, China
| | - Yan-Yan Song
- College of Science, Northeastern University, Shenyang 110004, China
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102
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Zhang X, Sun L, Yu Y, Zhao Y. Flexible Ferrofluids: Design and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1903497. [PMID: 31583782 DOI: 10.1002/adma.201903497] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 07/13/2019] [Indexed: 06/10/2023]
Abstract
Ferrofluids, also known as ferromagnetic particle suspensions, are materials with an excellent magnetic response, which have attracted increasing interest in both industrial production and scientific research areas. Because of their outstanding features, such as rapid magnetic reaction, flexible flowability, as well as tunable optical and thermal properties, ferrofluids have found applications in various fields, including material science, physics, chemistry, biology, medicine, and engineering. Here, a comprehensive, in-depth insight into the diverse applications of ferrofluids from material fabrication, droplet manipulation, and biomedicine to energy and machinery is provided. Design of ferrofluid-related devices, recent developments, as well as present challenges and future prospects are also outlined.
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Affiliation(s)
- Xiaoxuan Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Lingyu Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yunru Yu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yuanjin Zhao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
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103
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Wang S, He Z, Li W, Zhao J, Chen T, Shao S, Chen H. Reshaping of pipette tip: A facile and practical strategy for sorbent packing-free solid phase extraction. Anal Chim Acta 2019; 1100:47-56. [PMID: 31987152 DOI: 10.1016/j.aca.2019.11.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 11/21/2019] [Accepted: 11/23/2019] [Indexed: 02/07/2023]
Abstract
Pipette tip-based solid phase extraction (PT-SPE) has been proved to be an effective and user-friendly separation technique due to its miniaturized procedure and practical convenience. However, the vast majority of existing PT-SPE devices consist of a filter-sorbents-filter sandwich structure, which may suffer the unforeseen risk of sorbents leakage caused by the looseness of filters. More importantly, many high-capacity nanosorbents with particle size smaller than pore size of filters are unavailable. Thus, sorbent packing-free and sample low-consumption PT-SPE could be a more robust strategy for separation and detection, but such a possibility has not been explored yet. Herein we report a tubing reshaping strategy for facile fabrication of sorbent packing-free PT-SPE devices. Three types of reshaped PTs, namely stretched tube-like, self-crimping and filter in-built PTs, were fabricated via simple heating and stretching operations. The reshaped PTs exhibited flexible surface chemical post-modification. The SPE process was directly performed in reshaped PTs with an obviously enhanced extraction efficiency compared to once-shaping PTs while no need of packing sorbents. Extraction of nucleosides from human urine by boronic acid-functionalized reshaped PTs was demonstrated. Our findings technically renovate the structural composition of PT-SPE devices. As PTs are inexpensive and high-plasticity, the sorbent packing-free SPE scheme presented herein could find more promising applications and provides a new perspective for design and fabrication of novel sorbent packing-free SPE devices.
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Affiliation(s)
- Shuangshou Wang
- School of Chemistry and Chemical Engineering, Anhui University of Technology, #328 Huolishan Avenue, Yushan District, Maanshan, Anhui, 243032, PR China; Engineering Research Institute of AHUT, Anhui University of Technology, PR China.
| | - Zhendong He
- School of Chemistry and Chemical Engineering, Anhui University of Technology, #328 Huolishan Avenue, Yushan District, Maanshan, Anhui, 243032, PR China
| | - Wenzhi Li
- School of Chemistry and Chemical Engineering, Anhui University of Technology, #328 Huolishan Avenue, Yushan District, Maanshan, Anhui, 243032, PR China
| | - Jiayi Zhao
- School of Chemistry and Chemical Engineering, Anhui University of Technology, #328 Huolishan Avenue, Yushan District, Maanshan, Anhui, 243032, PR China
| | - Tong Chen
- Comprehensive Technical Center, Zhenjiang Customs District PR China, Zhenjing, 212004, PR China
| | - Shimin Shao
- School of Chemistry and Chemical Engineering, Anhui University of Technology, #328 Huolishan Avenue, Yushan District, Maanshan, Anhui, 243032, PR China
| | - Hongmei Chen
- School of Mathematics and Physics of Science and Engineering, Anhui University of Technology, PR China.
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104
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Feng J, Xu Y, Huang W, Kong H, Li Y, Cheng H, Li L. A magnetic SERS immunosensor for highly sensitive and selective detection of human carboxylesterase 1 in human serum samples. Anal Chim Acta 2019; 1097:176-185. [PMID: 31910958 DOI: 10.1016/j.aca.2019.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/30/2019] [Accepted: 11/03/2019] [Indexed: 02/06/2023]
Abstract
Hepatocellular carcinoma (HCC) is a common and lethal cancer. New serum markers for detecting HCC are urgently needed. Human carboxylesterase 1 (hCE1) is an important member of the serine hydrolase superfamily and is closely related to the occurrence of HCC. It can be used as a good serum marker for early diagnosis of HCC. Here, we developed a surface enhanced Raman scattering (SERS)- based magnetic immunosensor that specifically recognizes and detects trace amounts of hCE1 in human serum via a sandwich structure consisting of a SERS tags, magnetic supporting substrates, and target antigen (hCE1). The SERS tags are 4-mercaptobenzoic acid (4-MBA)-labeled AgNPs, and the SERS supporting substrates are composed of a raspberry-like morphology of Fe3O4@SiO2@AgNPs magnetic nanocomposites surface-functionalized with a hCE1 antibody. The prepared SERS magnetic immunosensor exhibits excellent selectivity and extremely high sensitivity for hCE1 detection. The SERS signal and logarithm of hCE1 concentration presented a wide linear response range of 0.1 ng mL-1 to 1.0 mg mL-1, and the detection limit of hCE1 was 0.1 ng mL-1. The results indicate that the immunosensor can be used for the rapid determination of hCE1 in human serum without a complicated sample pre-treatment. Furthermore, the immunosensor has good reproducibility and stability, and has a promising prospect for the quantitative detection of other tumor markers in early clinical diagnosis.
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Affiliation(s)
- Jun Feng
- School of Medicine, Guangxi University of Science and Technology, Liuzhou, 545005, Guangxi, PR China; Provine and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi, PR China
| | - Yajuan Xu
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi, PR China; Provine and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi, PR China
| | - Wenyi Huang
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi, PR China; Provine and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi, PR China
| | - Hongxing Kong
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi, PR China; Provine and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi, PR China
| | - Yanqing Li
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi, PR China; Provine and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi, PR China
| | - Hao Cheng
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi, PR China; Provine and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi, PR China.
| | - Lijun Li
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, Guangxi, PR China; Provine and Ministry Co-sponsored Collaborative Innovation Center of Sugarcane and Sugar Industry, Nanning, 530004, Guangxi, PR China.
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105
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A laser-induced breakdown spectroscopy-integrated lateral flow strip (LIBS-LFS) sensor for rapid detection of pathogen. Biosens Bioelectron 2019; 142:111508. [DOI: 10.1016/j.bios.2019.111508] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/25/2019] [Accepted: 07/12/2019] [Indexed: 01/21/2023]
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106
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Wang HX, Zhao YW, Li Z, Liu BS, Zhang D. Development and Application of Aptamer-Based Surface-Enhanced Raman Spectroscopy Sensors in Quantitative Analysis and Biotherapy. SENSORS (BASEL, SWITZERLAND) 2019; 19:E3806. [PMID: 31484403 PMCID: PMC6749344 DOI: 10.3390/s19173806] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/16/2019] [Accepted: 08/31/2019] [Indexed: 12/16/2022]
Abstract
Surface-enhanced Raman scattering (SERS) is one of the most special and important Raman techniques. An apparent Raman signal can be observed when the target molecules are absorbed onto the surface of the SERS substrates, especially on the "hot spots" of the substrates. Early research focused on exploring the highly active SERS substrates and their detection applications in label-free SERS technology. However, it is a great challenge to use these label-free SERS sensors for detecting hydrophobic or non-polar molecules, especially in complex systems or at low concentrations. Therefore, antibodies, aptamers, and antimicrobial peptides have been used to effectively improve the target selectivity and meet the analysis requirements. Among these selective elements, aptamers are easy to use for synthesis and modifications, and their stability, affinity and specificity are extremely good; they have been successfully used in a variety of testing areas. The combination of SERS detection technology and aptamer recognition ability not only improved the selection accuracy of target molecules, but also improved the sensitivity of the analysis. Variations of aptamer-based SERS sensors have been developed and have achieved satisfactory results in the analysis of small molecules, pathogenic microorganism, mycotoxins, tumor marker and other functional molecules, as well as in successful photothermal therapy of tumors. Herein, we present the latest advances of the aptamer-based SERS sensors, as well as the assembling sensing platforms and the strategies for signal amplification. Furthermore, the existing problems and potential trends of the aptamer-based SERS sensors are discussed.
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Affiliation(s)
- Hai-Xia Wang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yu-Wen Zhao
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Zheng Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Bo-Shi Liu
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Di Zhang
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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107
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Yan P, Ding Z, Li X, Dong Y, Fu T, Wu Y. Colorimetric Sensor Array Based on Wulff-Type Boronate Functionalized AgNPs at Various pH for Bacteria Identification. Anal Chem 2019; 91:12134-12137. [DOI: 10.1021/acs.analchem.9b03172] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Peng Yan
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, 710049 Xi’an, PR China
| | - Zhi Ding
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, 710049 Xi’an, PR China
| | - Xizhe Li
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, 710049 Xi’an, PR China
| | - Yanhua Dong
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, 710049 Xi’an, PR China
| | - Tao Fu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, 710049 Xi’an, PR China
| | - Yayan Wu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, 710049 Xi’an, PR China
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108
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Zheng S, Zhang H, Lakshmipriya T, Gopinath SCB, Yang N. Gold Nanorod Integrated Electrochemical Sensing for Hyperglycaemia on Interdigitated Electrode. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9726967. [PMID: 31380444 PMCID: PMC6662476 DOI: 10.1155/2019/9726967] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 06/30/2019] [Accepted: 07/03/2019] [Indexed: 11/17/2022]
Abstract
Gestational diabetes (hyperglycaemia) is an elevated blood sugar level diagnosed during the period of pregnancy and affects the baby's health. Hyperglycaemia has been found within the gestational weeks between 24 and 28, and the foetus has also the possibility of getting out prior to this test frame; it causes excessive birth weight, early birth, low-blood sugar level, respiratory distress syndrome, and type-2 diabetes to the mother. It creates a mandatory situation to identify the hyperglycaemia at least during the pregnancy weeks from 18 to 20. Further, a continuous monitoring of the level of glucose is necessary for the proper delivery. In this work, a method is introduced for glucose detection at 0.06 mg/mL, assisted by gold nanorod (GNR)-conjugated glucose oxidase (GOx) on interdigitated electrode sensor. In the absence of GNR, GOx shows the limit of glucose detection to be 0.25 mg/mL. Moreover, with GOx-GNR the reactions of all the glucose concentrations have recorded higher levels of the current from the baseline. With the specificity analysis, it was found that the glucose only reacts with GOx-GNR and discriminates other sugars efficiently. This method of detection is useful to diagnose and continuously monitor the glucose level during the pregnancy period.
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Affiliation(s)
- Shumin Zheng
- Department of Obstetrics, Dezhou People's Hospital, No. 1166 Dongfanghong West Road, Dezhou, Shandong Province, 253014, China
| | - Hong Zhang
- Department of Obstetrics, Dezhou People's Hospital, No. 1166 Dongfanghong West Road, Dezhou, Shandong Province, 253014, China
| | - Thangavel Lakshmipriya
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, 01000 Kangar, Perlis, Malaysia
| | - Subash C. B. Gopinath
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, 01000 Kangar, Perlis, Malaysia
- School of Bioprocess Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
| | - Na Yang
- Department of Obstetrics, Dezhou People's Hospital, No. 1166 Dongfanghong West Road, Dezhou, Shandong Province, 253014, China
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109
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Xu C, Akakuru OU, Zheng J, Wu A. Applications of Iron Oxide-Based Magnetic Nanoparticles in the Diagnosis and Treatment of Bacterial Infections. Front Bioeng Biotechnol 2019; 7:141. [PMID: 31275930 PMCID: PMC6591363 DOI: 10.3389/fbioe.2019.00141] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 05/28/2019] [Indexed: 12/12/2022] Open
Abstract
Diseases caused by bacterial infections, especially drug-resistant bacteria have seriously threatened human health throughout the world. It has been predicted that antimicrobial resistance alone will cause 10 million deaths per year and that early diagnosis and therapy will efficiently decrease the mortality rate caused by bacterial infections. Considering this severity, it is urgent to develop effective methods for the early detection, prevention and treatment of these infections. Until now, numerous efforts based on nanoparticles have been made to detect and kill pathogenic bacteria. Iron oxide-based magnetic nanoparticles (MNPs), as potential platforms for bacteria detection and therapy, have drawn great attention owing to their magnetic property. These MNPs have also been broadly used as bioimaging contrast agents and drug delivery and magnetic hyperthermia agents to diagnose and treat bacterial infections. This review therefore overviews the recent progress on MNPs for bacterial detection and therapy, including bacterial separation and enrichment in vitro, bacterial infection imaging in vivo, and their therapeutic activities on pathogenic bacteria. Furthermore, some bacterial-specific targeting agents, used to selectively target the pathogenic bacteria, are also introduced. In addition, the challenges and future perspective of MNPs for bacterial diagnosis and therapy are given at the end of this review. It is expected that this review will provide a better understanding toward the applications of MNPs in the detection and therapy of bacterial infections.
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Affiliation(s)
- Chen Xu
- Cixi Institute of Biomedical Engineering, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices & Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China
- Department of Experimental Medical Science, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo, China
- Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province, Ningbo, China
| | - Ozioma Udochukwu Akakuru
- Cixi Institute of Biomedical Engineering, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices & Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China
| | - Jianjun Zheng
- Department of Radiology, Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo, China
| | - Aiguo Wu
- Cixi Institute of Biomedical Engineering, Chinese Academy of Science (CAS) Key Laboratory of Magnetic Materials and Devices & Key Laboratory of Additive Manufacturing Materials of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, China
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110
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Pang Y, Wan N, Shi L, Wang C, Sun Z, Xiao R, Wang S. Dual-recognition surface-enhanced Raman scattering(SERS)biosensor for pathogenic bacteria detection by using vancomycin-SERS tags and aptamer-Fe 3O 4@Au. Anal Chim Acta 2019; 1077:288-296. [PMID: 31307721 DOI: 10.1016/j.aca.2019.05.059] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/21/2019] [Accepted: 05/24/2019] [Indexed: 10/26/2022]
Abstract
Rapid and reliable detection of pathogenic bacteria is vital to prevent and control bacterial diseases. In this study, we present a magnetically assisted surface-enhanced Raman scattering (SERS) biosensor based on the dual-recognition of bacterial cell by aptamer and antibiotic molecules. Aptamer-Fe3O4@Au magnetic nanoparticles (AuMNPs) were synthesized as magnetic and SERS activated substrate for specific bacteria enrichment, vancomycin-SERS tags (Au@MBA) were prepared for the sensitive quantification of pathogenic bacteria. Due to the Au-shell based dual-SERS enhancement and aptamer/vancomycin based dual-recognition ability, a detection limit of 3 cells/mL with a wide dynamic linear range from 10 to 107 cells/mL can be achieved within 50 min without other non-target bacteria interference. When applied in real samples, the approach shows recoveries from 95.0% to 106.4% with relative standard derivation (RSD) less than 5.3%. The SERS strategy could be used to detect a broad range of bacteria by using different aptamers, moreover, the simple operation and precise quantification ability empower this assay great potential in the application of food safety and infectious disease point-of-care diagnosis.
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Affiliation(s)
- Yuanfeng Pang
- Capital Medical University, Department of Toxicology, No. 10 Xitoutiao, You An Men, Beijing, 100069, PR China
| | - Nan Wan
- Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, PR China; The General Hospital of Northern Theater Command, 83 Wenhua Road, Shenyang, 110016, PR China
| | - Luoluo Shi
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China
| | - Chongwen Wang
- College of Life Sciences, Anhui Agricultural University, Hefei, 230036, PR China.
| | - Zhiwei Sun
- Capital Medical University, Department of Toxicology, No. 10 Xitoutiao, You An Men, Beijing, 100069, PR China.
| | - Rui Xiao
- Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, PR China.
| | - Shengqi Wang
- Institute of Radiation Medicine, 27 Taiping Road, Beijing, 100850, PR China.
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111
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Fluorescent microbeads for point-of-care testing: a review. Mikrochim Acta 2019; 186:361. [PMID: 31101985 DOI: 10.1007/s00604-019-3449-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 04/14/2019] [Indexed: 02/06/2023]
Abstract
Microbead-based point-of-care testing (POCT) has demonstrated great promise in translating detection modalities from bench-side to bed-side. This is due to the ease of visualization, high surface area-to-volume ratio of beads for efficient target binding, and efficient encoding capability for simultaneous detection of multiple analytes. This review (with 112 references) summarizes the progress made in the field of fluorescent microbead-based POCT. Following an introduction into the field, a first large section sums up techniques and materials for preparing microbeads, typically of dye-labelled particles, various kinds of quantum dots and upconversion materials. Further subsections cover the encapsulation of nanoparticles into microbeads, decoration of nanoparticles on microbeads, and in situ embedding of nanoparticles during microbead synthesis. A next large section summarizes microbead-based fluorometric POCT, with subsections on detection of nucleic acids, proteins, circulating tumor cells and bacteria. A further section covers emerging POCT based on the use of smartphones or flexible microchips. The last section gives conclusions and an outlook on current challenges and possible solutions. Aside from giving an overview on the state of the art, we expect this article to boost the further development of POCT technology. Graphical Abstract Schematic presentation of the fabrication of microbeads, the detection targets of interest including bacteria, circulating tumor cells (CTCs), protein and nucleic acid, and the emerging point-of-care testing (POCT) platform. The colored wheels of the bus represent the fluorescent materials embedded in (red color) or decorated on the surface of microbeads (green color).
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112
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Chen J, Hao L, Wu Y, Lin T, Li X, Leng Y, Huang X, Xiong Y. Integrated magneto-fluorescence nanobeads for ultrasensitive glycoprotein detection using antibody coupled boronate-affinity recognition. Chem Commun (Camb) 2019; 55:10312-10315. [DOI: 10.1039/c9cc04902a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report a novel magnet-mediated antibody-boronate sandwich-typed assay (ABSTA) strategy for the ultrasensitive, specific, rapid, and enzyme-free detection of glycoproteins in complex samples.
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Affiliation(s)
- Jing Chen
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- P. R. China
- School of Food Science and Technology
| | - Liangwen Hao
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- P. R. China
- School of Food Science and Technology
| | - Yunqing Wu
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- P. R. China
- School of Food Science and Technology
| | - Tong Lin
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- P. R. China
- School of Food Science and Technology
| | - Xiangmin Li
- Jiangxi-OAI Joint Research Institute
- Nanchang University
- Nanchang 330047
- P. R. China
| | - Yuankui Leng
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- P. R. China
- School of Food Science and Technology
| | - Xiaolin Huang
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- P. R. China
- School of Food Science and Technology
| | - Yonghua Xiong
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- P. R. China
- School of Food Science and Technology
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