1
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Electrochemical biosensors for analysis of DNA point mutations in cancer research. Anal Bioanal Chem 2023; 415:1065-1085. [PMID: 36289102 DOI: 10.1007/s00216-022-04388-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/11/2022] [Accepted: 10/14/2022] [Indexed: 02/07/2023]
Abstract
Cancer is a genetic disease induced by mutations in DNA, in particular point mutations in important driver genes that lead to protein malfunctioning and ultimately to tumorigenesis. Screening for the most common DNA point mutations, especially in such genes as TP53, BRCA1 and BRCA2, EGFR, KRAS, or BRAF, is crucial to determine predisposition risk for cancer or to predict response to therapy. In this review, we briefly depict how these genes are involved in cancer, followed by a description of the most common techniques routinely applied for their analysis, including high-throughput next-generation sequencing technology and less expensive low-throughput options, such as real-time PCR, restriction fragment length polymorphism, or high resolution melting analysis. We then introduce benefits of electrochemical biosensors as interesting alternatives to the standard methods in terms of cost, speed, and simplicity. We describe most common strategies involved in electrochemical biosensing of point mutations, relying mostly on PCR or isothermal amplification techniques, and critically discuss major challenges and obstacles that, until now, prevented their more widespread application in clinical settings.
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2
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Das D, Lin CW, Chuang HS. LAMP-Based Point-of-Care Biosensors for Rapid Pathogen Detection. BIOSENSORS 2022; 12:bios12121068. [PMID: 36551035 PMCID: PMC9775414 DOI: 10.3390/bios12121068] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 06/01/2023]
Abstract
Seeking optimized infectious pathogen detection tools is of primary importance to lessen the spread of infections, allowing prompt medical attention for the infected. Among nucleic-acid-based sensing techniques, loop-mediated isothermal amplification is a promising method, as it provides rapid, sensitive, and specific detection of microbial and viral pathogens and has enormous potential to transform current point-of-care molecular diagnostics. In this review, the advances in LAMP-based point-of-care diagnostics assays developed during the past few years for rapid and sensitive detection of infectious pathogens are outlined. The numerous detection methods of LAMP-based biosensors are discussed in an end-point and real-time manner with ideal examples. We also summarize the trends in LAMP-on-a-chip modalities, such as classical microfluidic, paper-based, and digital LAMP, with their merits and limitations. Finally, we provide our opinion on the future improvement of on-chip LAMP methods. This review serves as an overview of recent breakthroughs in the LAMP approach and their potential for use in the diagnosis of existing and emerging diseases.
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Affiliation(s)
- Dhrubajyoti Das
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Cheng-Wen Lin
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung 404, Taiwan
- Department of Medical Laboratory Science and Biotechnology, Asia University, Wufeng, Taichung 413, Taiwan
| | - Han-Sheng Chuang
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 701, Taiwan
- Medical Device Innovation Center, National Cheng Kung University, Tainan 701, Taiwan
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3
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Fluorescence-based simultaneous dual oligo sensing of HCV genotypes 1 and 3 using magnetite nanoparticles. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 232:112463. [PMID: 35567883 DOI: 10.1016/j.jphotobiol.2022.112463] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/12/2022] [Accepted: 05/05/2022] [Indexed: 12/12/2022]
Abstract
Nucleic acid tests (NATs) have gained an important position in biosensing in the context of the increasing need to meet the stringent requirements for accurate diagnosis of infectious diseases with high sensitivity and selectivity. Recently, the development of new strategies towards multiplex detection of analytes in a single assay is gaining impetus since such an approach would lead to high throughput analysis, leading to substantial benefits in terms of time, infrastructure, labor, and cost. In this work, we demonstrate a facile fluorescence-based simultaneous dual oligo sensing of genotypes 1 and 3 by employing two target sequences (36-mers each) derived from the NS4B and NS5A regions of HCV genome, respectively. A set of 18-mer amine-tagged probes and another set of 18-mer fluorescently-labeled probes that were complementary to each half of the 36-mer target sequences were designed. The amine-tagged probes were immobilized over aldehyde-derivatized magnetite nanoparticles (NPs) via imine bond formation, which was characterized using X-ray photoelectron spectroscopy (XPS) and energy dispersive spectroscopy (EDS) mapping techniques. The successful hybridization between the two probes with their target followed by magnetic removal of the NPs from the solution enabled quantitative analysis of the target by measuring the fluorescence intensity of the residual concentration of the fluorescently-tagged probe. In this manner, the targets corresponding to genotypes 1 and 3 were simultaneously detected with the detection limit in the range of 10-15 nM. The current strategy can potentially be amalgamated with existing nanotechnology-based techniques towards multiplex oligo sensing of several pathogens.
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4
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Ravi N, Chang SE, Franco LM, Nagamani SCS, Khatri P, Utz PJ, Wang SX. A GMR-based assay for quantification of the human response to influenza. Biosens Bioelectron 2022; 205:114086. [PMID: 35192997 PMCID: PMC8986584 DOI: 10.1016/j.bios.2022.114086] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/12/2022] [Accepted: 02/07/2022] [Indexed: 01/26/2023]
Abstract
Detecting and quantifying the host transcriptional response to influenza virus infection can serve as a real-time diagnostic tool for clinical management. We have employed the multiplexing capabilities of GMR sensors to develop a novel assay based on the influenza metasignature (IMS), which can classify influenza infection based on transcript levels. We show that the assay can reliably detect ten IMS transcripts and distinguish subjects with naturally acquired influenza infection from those with other symptomatic viral infections (AUC 0.93, 95% CI: 0.82-1.00). Separately, we validated that the gene IFI27, not included in the IMS panel, has very high single-biomarker accuracy (AUC 0.95, 95% CI: 0.90-0.99) in stratifying patients with influenza. We demonstrate that a portable GMR biosensor can be used as a tool to diagnose influenza infection by measuring the host response, simultaneously highlighting the power of immune system metrics and advancing the field of gene expression-based diagnostics.
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Affiliation(s)
- Neeraja Ravi
- Department of Bioengineering, Stanford University, Stanford, CA, 93405, USA.
| | - Sarah E Chang
- Institute for Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA; Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA.
| | - Luis M Franco
- Functional Immunogenomics Unit, Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA.
| | - Sandesh C S Nagamani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
| | - Purvesh Khatri
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA; Division of Biomedical Informatics, Department of Medicine, Stanford University, Stanford, CA, USA.
| | - Paul J Utz
- Institute for Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA; Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA.
| | - Shan X Wang
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA; Department of Electrical Engineering, Stanford University, Stanford, CA, USA.
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5
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Wu K, Tonini D, Liang S, Saha R, Chugh VK, Wang JP. Giant Magnetoresistance Biosensors in Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2022; 14:9945-9969. [PMID: 35167743 PMCID: PMC9055838 DOI: 10.1021/acsami.1c20141] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The giant magnetoresistance (GMR) effect has seen flourishing development from theory to application in the last three decades since its discovery in 1988. Nowadays, commercial devices based on the GMR effect, such as hard-disk drives, biosensors, magnetic field sensors, microelectromechanical systems (MEMS), etc., are available in the market, by virtue of the advances in state-of-the-art thin-film deposition and micro- and nanofabrication techniques. Different types of GMR biosensor arrays with superior sensitivity and robustness are available at a lower cost for a wide variety of biomedical applications. In this paper, we review the recent advances in GMR-based biomedical applications including disease diagnosis, genotyping, food and drug regulation, brain and cardiac mapping, etc. The GMR magnetic multilayer structure, spin valve, and magnetic granular structure, as well as fundamental theories of the GMR effect, are introduced at first. The emerging topic of flexible GMR for wearable biosensing is also included. Different GMR pattern designs, sensor surface functionalization, bioassay strategies, and on-chip accessories for improved GMR performances are reviewed. It is foreseen that combined with the state-of-the-art complementary metal-oxide-semiconductor (CMOS) electronics, GMR biosensors hold great promise in biomedicine, particularly for point-of-care (POC) disease diagnosis and wearable devices for real-time health monitoring.
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Affiliation(s)
- Kai Wu
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Denis Tonini
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Shuang Liang
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Renata Saha
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Vinit Kumar Chugh
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Jian-Ping Wang
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
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6
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Yu J, Liu J, Ma CB, Qi L, Du Y, Hu X, Jiang Y, Zhou M, Wang E. Signal-On Electrochemical Detection for Drug-Resistant Hepatitis B Virus Mutants through Three-Way Junction Transduction and Exonuclease III-Assisted Catalyzed Hairpin Assembly. Anal Chem 2021; 94:600-605. [PMID: 34920663 DOI: 10.1021/acs.analchem.1c03451] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The present detection method for hepatitis B virus (HBV) drug-resistant mutation has a high misdiagnosis rate and usually needs to meet stringent requirements for technology and equipment, leading to complex and time-consuming manipulation and drawback of high costs. Herein, with the purpose of developing cost-effective, highly efficient, and handy diagnosis for HBV drug-resistant mutants, we propose an electrochemical signal-on strategy through the three-way junction (3WJ) transduction and exonuclease III (Exo III)-assisted catalyzed hairpin assembly (CHA). To achieve single-copy gene detection, loop-mediated nucleic acid isothermal amplification (LAMP), one of the highly promising and compatible techniques to revolutionize point-of-care genetic detection, is first adopted for amplification. The rtN236T mutation, an error encoded by codon 236 of the reverse transcriptase region of HBV DNA, was employed as the model gene target. Under the optimized conditions, it allows end-point transduction from HBV drug-resistant mutants-genomic information to electrochemical signals with ultrahigh sensitivity, specificity, and signal-to-noise ratio, showing the lowest detection concentration down to 2 copies/μL. Such a method provides a possibly new principle for ideal in vitro diagnosis, supporting the construction of a clinic HBV diagnosis platform with high accuracy and generalization. Moreover, it is not restricted by specific nucleic acid sequences but can be applied to the detection of various disease genes, laying the foundation for multiple detection.
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Affiliation(s)
- Jiaxue Yu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Analysis and Testing Center, Department of Chemistry, Northeast Normal University, Changchun, Jilin Province 130024, China.,State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
| | - Jingju Liu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Analysis and Testing Center, Department of Chemistry, Northeast Normal University, Changchun, Jilin Province 130024, China
| | - Chong-Bo Ma
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Analysis and Testing Center, Department of Chemistry, Northeast Normal University, Changchun, Jilin Province 130024, China
| | - Lijuan Qi
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,Department of Chemistry, University of Science & Technology of China, Hefei, Anhui 230026, China
| | - Yan Du
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,Department of Chemistry, University of Science & Technology of China, Hefei, Anhui 230026, China
| | - Xintong Hu
- Key Laboratory of Organ Regeneration & Transplantation of the Ministry of Education, Genetic Diagnosis Center, The First Hospital of Jilin University, Changchun 130021, China
| | - Yanfang Jiang
- Key Laboratory of Organ Regeneration & Transplantation of the Ministry of Education, Genetic Diagnosis Center, The First Hospital of Jilin University, Changchun 130021, China
| | - Ming Zhou
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, National & Local United Engineering Laboratory for Power Batteries, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Analysis and Testing Center, Department of Chemistry, Northeast Normal University, Changchun, Jilin Province 130024, China
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,Department of Chemistry, University of Science & Technology of China, Hefei, Anhui 230026, China
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7
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Li J, Wu X, Li Y, Wang X, Huang H, Jian D, Shan Y, Zhang Y, Wu C, Tan G, Wang S, Liu F. Amplification-free smartphone-based attomolar HBV detection. Biosens Bioelectron 2021; 194:113622. [PMID: 34543826 DOI: 10.1016/j.bios.2021.113622] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/01/2021] [Accepted: 09/10/2021] [Indexed: 01/17/2023]
Abstract
Classical gold standard HBV detection relies on expensive devices and complicated procedures, thus is always restricted in large-scale hospitals and centers for disease control and prevention. To extend HBV detection to primary clinics especially in underdeveloped areas, we design amplification-free smartphone-based attomolar HBV detecting technique based on single molecule sensing. Verified by synthesized HBV target DNA, this technique reaches a detection limit at attomolar concentration (100 aM); and verified by 110 clinical samples, it also reaches a rather high sensitivity of 104 copy/mL (≈2000 IU/mL) with a high accuracy of 93.64% certificated by gold standard HBV detecting devices. Besides, this technique can quantify HBV viral load in 70 min only using portable and inexpensive devices as well as simple operations. Because of its cost-effective, field-portable and operable design, highly sensitive and selective detecting capability and wireless data connectivity, this technique can be potentially used in mobile HBV diagnoses and share HBV epidemic information especially in resource limited situations.
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Affiliation(s)
- Jiahao Li
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Xuping Wu
- The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, 210003, China
| | - Yue Li
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Xin Wang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Huachuan Huang
- School of Manufacture Science and Engineering, Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Dan Jian
- OptiX+ Laboratory, Wuxi, Jiangsu, 214000, China
| | - Yanke Shan
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Yue Zhang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Chengcheng Wu
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China
| | - Guolei Tan
- The Second Hospital of Nanjing, Nanjing University of Chinese Medicine, Nanjing, 210003, China
| | - Shouyu Wang
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China; OptiX+ Laboratory, Wuxi, Jiangsu, 214000, China.
| | - Fei Liu
- Joint International Research Laboratory of Animal Health and Food Safety of Ministry of Education & Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
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8
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Mohammed AS, Balapure A, Khan AA, Khaja MN, Ganesan R, Dutta JR. Genotyping simplified: rationally designed antisense oligonucleotide-mediated PCR amplification-free colorimetric sensing of viral RNA in HCV genotypes 1 and 3. Analyst 2021; 146:4767-4774. [PMID: 34231566 DOI: 10.1039/d1an00590a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Molecular diagnosis of viral genotyping devoid of polymerase chain reaction (PCR) amplification in clinical cohorts has hitherto been challenging. Here we present a simplified molecular diagnostic strategy for direct genotyping of hepatitis C virus (HCV) 1 and 3 (prevalent worldwide) using a combination of rationally designed genotype-specific antisense oligonucleotides (ASOs) and plasmonic gold nanoparticles. The ASOs specific to genotypes 1 and 3 have been designed from the nonstructural region 5A (NS5A) of the viral genome using the ClustalW multiple sequence alignment tool. A total of 79 clinical samples including 18 HCV genotype 1, 18 HCV genotype 3, one HIV positive, one HBV positive, and 41 healthy controls have been tested against both the designed ASOs. The study reveals 100% specificity and sensitivity with the employed samples and thereby opens up new avenues for PCR-free direct genotyping of other viruses as well, through the rational design of ASOs.
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Affiliation(s)
- Almas Shamaila Mohammed
- Department of Biological Sciences, BITS Pilani Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal, Hyderabad-500078, India.
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9
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Li S, Huang S, Ke Y, Chen H, Dang J, Huang C, Liu W, Cui D, Wang J, Zhi X, Ding X. A HiPAD Integrated with rGO/MWCNTs Nano-Circuit Heater for Visual Point-of-Care Testing of SARS-CoV-2. ADVANCED FUNCTIONAL MATERIALS 2021; 31:2100801. [PMID: 34230825 PMCID: PMC8250055 DOI: 10.1002/adfm.202100801] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/19/2021] [Indexed: 05/03/2023]
Abstract
Nowadays, the main obstacle for further miniaturization and integration of nucleic acids point-of-care testing devices is the lack of low-cost and high-performance heating materials for supporting reliable nucleic acids amplification. Herein, reduced graphene oxide hybridized multi-walled carbon nanotubes nano-circuit integrated into an ingenious paper-based heater is developed, which is integrated into a paper-based analytical device (named HiPAD). The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is still raging across the world. As a proof of concept, the HiPAD is utilized to visually detect the SARS-CoV-2 N gene using colored loop-mediated isothermal amplification reaction. This HiPAD costing a few dollars has comparable detection performance to traditional nucleic acids amplifier costing thousands of dollars. The detection range is from 25 to 2.5 × 1010 copies mL-1 in 45 min. The detection limit of 25 copies mL-1 is 40 times more sensitive than 1000 copies mL-1 in conventional real-time PCR instruments. The disposable paper-based chip could also avoid potential secondary transmission of COVID-19 by convenient incineration to guarantee biosafety. The HiPAD or easily expanded M-HiPAD (for multiplex detection) has great potential for pathogen diagnostics in resource-limited settings.
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Affiliation(s)
- Sijie Li
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
| | - Shiyi Huang
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
| | - Yuqing Ke
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
| | - Hongjun Chen
- Shanghai Veterinary Research Institute518 Ziyue Road, Minhang DistrictShanghai200241China
| | - Jingqi Dang
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
| | - Chengjie Huang
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
| | - Wenjia Liu
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
| | - Daxiang Cui
- Shanghai Engineering Center for Intelligent Diagnosis and Treatment InstrumentSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong University800 Dongchuan RD, Minghang DistrictShanghai200240China
| | - Jinglin Wang
- State Key Laboratory of Pathogen and BiosecurityInstitute of Microbiology and Epidemiology20 Dongda Street, Fengtai DistrictBeijing100071China
| | - Xiao Zhi
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
| | - Xianting Ding
- State Key Laboratory of Oncogenes and Related GenesInstitute for Personalized MedicineSchool of Biomedical EngineeringShanghai Jiao Tong University1954 Huashan RD, Xuhui DistrictShanghai200030China
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10
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Meng F, Huo W, Lian J, Zhang L, Shi X, Jesorka A, Gao Y. A tandem giant magnetoresistance assay for one-shot quantification of clinically relevant concentrations of N-terminal pro-B-type natriuretic peptide in human blood. Anal Bioanal Chem 2021; 413:2943-2949. [PMID: 33624128 PMCID: PMC8043887 DOI: 10.1007/s00216-021-03227-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/28/2021] [Accepted: 02/08/2021] [Indexed: 11/28/2022]
Abstract
We report a microfluidic sandwich immunoassay constructed around a dual-giant magnetoresistance (GMR) sensor array to quantify the heart failure biomarker NT-proBNP in human plasma at the clinically relevant concentration levels between 15 pg/mL and 40 ng/mL. The broad dynamic range was achieved by differential coating of two identical GMR sensors operated in tandem, and combining two standard curves. The detection limit was determined as 5 pg/mL. The assay, involving 53 plasma samples from patients with different cardiovascular diseases, was validated against the Roche Cobas e411 analyzer. The salient features of this system are its wide concentration range, low detection limit, small sample volume requirement (50 μL), and the need for a short measurement time of 15 min, making it a prospective candidate for practical use in point of care analysis.
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Affiliation(s)
- Fanda Meng
- Institute of Basic Medicine, The First Affiliated Hospital of Shandong First Medical University, Jinan, 250014, China. .,Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250062, China. .,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.
| | - Weisong Huo
- Dongguan Bosh Biotechnologies, Ltd., Dongguan, 523808, China
| | - Jie Lian
- College of Criminal Investigation, People's Public Security University of China, Beijing, 100038, China
| | - Lei Zhang
- Dongguan Bosh Biotechnologies, Ltd., Dongguan, 523808, China
| | - Xizeng Shi
- Dongguan Bosh Biotechnologies, Ltd., Dongguan, 523808, China
| | - Aldo Jesorka
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden
| | - Yunhua Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. .,University of Chinese Academy of Sciences, Beijing, 100149, China.
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11
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Rong X, Ailing F, Xiaodong L, Jie H, Min L. Monitoring hepatitis B by using point-of-care testing: biomarkers, current technologies, and perspectives. Expert Rev Mol Diagn 2021; 21:195-211. [PMID: 33467927 DOI: 10.1080/14737159.2021.1876565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Introduction: Liver diseases caused by hepatitis B virus (HBV) are pandemic infectious diseases that seriously endanger human health, conventional diagnosis methods can not meet the requirements in resource-limited areas. The point of acre detection methods can easily resolve those problems. Herein, we review the most recent advances in POC-based hepatitis B detection methods and present some recommendations for future development. It aims to provide ideas for future research.Areas covered: Epidemiological data on Hepatitis B, conventional diagnostic methods for hepatitis B detection, some latest point of care detection methods for hepatitis B detection and list out the recommendations for future development.Expert opinion: This manuscript summarized traditional biomarkers of different hepatitis B stages and recent-developed POCT platforms (including microfluidic platforms and lateral-flow strips) and discuss the challenges associated with their use. Some emerging biomarkers that can be used in hepatitis B diagnosis are also listed. This manuscript has certain guiding significance to the development of hepatitis B detection.
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Affiliation(s)
- Xu Rong
- Institute of Physics & Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, China
| | - Feng Ailing
- Institute of Physics & Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, China
| | - Li Xiaodong
- Institute of Physics & Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, China
| | - Hu Jie
- Suzhou DiYinAn Biotech Co., Ltd. & Suzhou Innovation Center for Life Science and Technology, Suzhou, China
| | - Lin Min
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
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12
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Wu K, Saha R, Su D, Krishna VD, Liu J, Cheeran MCJ, Wang JP. Magnetic-Nanosensor-Based Virus and Pathogen Detection Strategies before and during COVID-19. ACS APPLIED NANO MATERIALS 2020; 3:9560-9580. [PMID: 37556271 PMCID: PMC7526334 DOI: 10.1021/acsanm.0c02048] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/22/2020] [Indexed: 05/02/2023]
Abstract
The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19), is a threat to the global healthcare system and economic security. As of July 2020, no specific drugs or vaccines are yet available for COVID-19; a fast and accurate diagnosis for SARS-CoV-2 is essential in slowing the spread of COVID-19 and for efficient implementation of control and containment strategies. Magnetic nanosensing is an emerging topic representing the frontiers of current biosensing and magnetic areas. The past decade has seen rapid growth in applying magnetic tools for biological and biomedical applications. Recent advances in magnetic nanomaterials and nanotechnologies have transformed current diagnostic methods to nanoscale and pushed the detection limit to early-stage disease diagnosis. Herein, this review covers the literature of magnetic nanosensors for virus and pathogen detection before COVID-19. We review popular magnetic nanosensing techniques including magnetoresistance, magnetic particle spectroscopy, and nuclear magnetic resonance. Magnetic point-of-care diagnostic kits are also reviewed aiming at developing plug-and-play diagnostics to manage the SARS-CoV-2 outbreak as well as preventing future epidemics. In addition, other platforms that use magnetic nanomaterials as auxiliary tools for enhanced pathogen and virus detection are also covered. The goal of this review is to inform the researchers of diagnostic and surveillance platforms for SARS-CoV-2 and their performances.
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Affiliation(s)
- Kai Wu
- Department of Electrical and Computer
Engineering, University of Minnesota,
Minneapolis, Minnesota 55455, United States
| | - Renata Saha
- Department of Electrical and Computer
Engineering, University of Minnesota,
Minneapolis, Minnesota 55455, United States
| | - Diqing Su
- Department of Chemical Engineering and
Material Science, University of Minnesota,
Minneapolis, Minnesota 55455, United States
| | - Venkatramana D. Krishna
- Department of Veterinary Population
Medicine, University of Minnesota, St.
Paul, Minnesota 55108, United States
| | - Jinming Liu
- Department of Electrical and Computer
Engineering, University of Minnesota,
Minneapolis, Minnesota 55455, United States
| | - Maxim C.-J. Cheeran
- Department of Veterinary Population
Medicine, University of Minnesota, St.
Paul, Minnesota 55108, United States
| | - Jian-Ping Wang
- Department of Electrical and Computer
Engineering, University of Minnesota,
Minneapolis, Minnesota 55455, United States
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Nguyen T, Chidambara VA, Andreasen SZ, Golabi M, Huynh VN, Linh QT, Bang DD, Wolff A. Point-of-care devices for pathogen detections: The three most important factors to realise towards commercialization. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116004] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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14
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Duraisamy GS, Bhosale D, Lipenská I, Huvarova I, Růžek D, Windisch MP, Miller AD. Advanced Therapeutics, Vaccinations, and Precision Medicine in the Treatment and Management of Chronic Hepatitis B Viral Infections; Where Are We and Where Are We Going? Viruses 2020; 12:v12090998. [PMID: 32906840 PMCID: PMC7552065 DOI: 10.3390/v12090998] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
The management of chronic hepatitis B virus (CHB) infection is an area of massive unmet clinical need worldwide. In spite of the development of powerful nucleoside/nucleotide analogue (NUC) drugs, and the widespread use of immune stimulators such as interferon-alpha (IFNα) or PEGylated interferon-alpha (PEG-IFNα), substantial improvements in CHB standards of care are still required. We believe that the future for CHB treatment now rests with advanced therapeutics, vaccination, and precision medicine, if all are to bring under control this most resilient of virus infections. In spite of a plethora of active drug treatments, anti-viral vaccinations and diagnostic techniques, the management of CHB infection remains unresolved. The reason for this is the very complexity of the virus replication cycle itself, giving rise to multiple potential targets for therapeutic intervention some of which remain very intractable indeed. Our review is focused on discussing the potential impact that advanced therapeutics, vaccinations and precision medicine could have on the future management of CHB infection. We demonstrate that advanced therapeutic approaches for the treatment of CHB, in the form of gene and immune therapies, together with modern vaccination strategies, are now emerging rapidly to tackle the limitations of current therapeutic approaches to CHB treatment in clinic. In addition, precision medicine approaches are now gathering pace too, starting with personalized medicine. On the basis of this, we argue that the time has now come to accelerate the design and creation of precision therapeutic approaches (PTAs) for CHB treatment that are based on advanced diagnostic tools and nanomedicine, and which could maximize CHB disease detection, treatment, and monitoring in ways that could genuinely eliminate CHB infection altogether.
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Affiliation(s)
- Ganesh Selvaraj Duraisamy
- Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic; (G.S.D.); (D.B.); (I.L.); (I.H.); (D.R.)
| | - Dattatry Bhosale
- Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic; (G.S.D.); (D.B.); (I.L.); (I.H.); (D.R.)
| | - Ivana Lipenská
- Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic; (G.S.D.); (D.B.); (I.L.); (I.H.); (D.R.)
| | - Ivana Huvarova
- Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic; (G.S.D.); (D.B.); (I.L.); (I.H.); (D.R.)
| | - Daniel Růžek
- Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic; (G.S.D.); (D.B.); (I.L.); (I.H.); (D.R.)
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branisovska 31, CZ-37005 České Budějovice, Czech Republic
| | - Marc P. Windisch
- Applied Molecular Virology Laboratory, Institut Pasteur Korea, 696 Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Korea;
- Division of Bio-Medical Science and Technology, University of Science and Technology, Daejeon 305-350, Korea
| | - Andrew D. Miller
- Veterinary Research Institute, Hudcova 70, CZ-62100 Brno, Czech Republic; (G.S.D.); (D.B.); (I.L.); (I.H.); (D.R.)
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemědělská 1, Černá Pole, CZ-61300 Brno, Czech Republic
- KP Therapeutics (Europe) s.r.o., Purkyňova 649/127, CZ-61200 Brno, Czech Republic
- Correspondence:
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Wang Y, Ge G, Mao R, Wang Z, Sun YZ, Du YG, Gao XH, Qi RQ, Chen HD. Genotyping of 30 kinds of cutaneous human papillomaviruses by a multiplex microfluidic loop-mediated isothermal amplification and visual detection method. Virol J 2020; 17:99. [PMID: 32646520 PMCID: PMC7345449 DOI: 10.1186/s12985-020-01373-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 06/30/2020] [Indexed: 11/13/2022] Open
Abstract
Background Human papillomaviruses (HPVs), a group of non-enveloped small viruses with double-stranded circular DNA which lead to multiple skin diseases such as benign warts, are commonly seen in clinics. The current HPV detection systems aim mainly at mucosal HPVs, however, an efficient clinical approach for cutaneous HPVs detection is lacking. Objectives To establish a rapid detection system for cutaneous HPVs using a colorimetric loop-mediated isothermal amplification (LAMP) with hydroxynaphthol blue (HNB) dye in combination with microfluidic technology. Methods L1 DNA sequences of the 30 cutaneous HPVs were chemically synthesized, and LAMP primers against L1 DNA were designed with use of an online LAMP designing tool. Isothermal amplification was performed with use of a water bath and the amplification results were inspected with the naked eye. Using PCR sequencing as a control method, the specificity and sensitivity of the new detection system were obtained by detecting clinical samples. Results The lower detection limit of the LAMP assay was 107 viral DNA copies/μl when tested on synthesized L1 DNA sequences, which was better than the conventional PCR. Compared to PCR sequencing, the sensitivity of HPV27, HPV2, HPV1, HPV57, HPV3, HPV4, HPV7 and HPV75 genotypes detections were 100%, whereas the specificity was 34.55, 45.12, 95.83, 98.59 and 97.62% respectively, when tested on clinical samples. Conclusions The new cutaneous type HPV detection system is characterized by both a good sensitivity and specificity compared to conventional methods.
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Affiliation(s)
- Yining Wang
- Department of Dermatology, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,NHC Key Laboratory of Immunodermatology (China Medical University), No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology (China Medical University), Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology, Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology (China Medical University), Department of education of Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China
| | - Ge Ge
- Department of Dermatology, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,NHC Key Laboratory of Immunodermatology (China Medical University), No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology (China Medical University), Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology, Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology (China Medical University), Department of education of Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Biopharmaceutical Production & Formulation Engineering, PLA and State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Rui Mao
- Key Laboratory of Biopharmaceutical Production & Formulation Engineering, PLA and State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Zhuo Wang
- Key Laboratory of Biopharmaceutical Production & Formulation Engineering, PLA and State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Yu-Zhe Sun
- Dermatology Hospital of Southern Medical University, No. 2 Lujing Road, Yuexiu District, Guangzhou, Guangdong Province, 510091, PR China.
| | - Yu-Guang Du
- Key Laboratory of Biopharmaceutical Production & Formulation Engineering, PLA and State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, PR China.
| | - Xing-Hua Gao
- Department of Dermatology, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,NHC Key Laboratory of Immunodermatology (China Medical University), No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,Key Laboratory of Immunodermatology (China Medical University), Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,Key Laboratory of Immunodermatology, Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,Key Laboratory of Immunodermatology (China Medical University), Department of education of Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.
| | - Rui-Qun Qi
- Department of Dermatology, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,NHC Key Laboratory of Immunodermatology (China Medical University), No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,Key Laboratory of Immunodermatology (China Medical University), Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,Key Laboratory of Immunodermatology, Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China. .,Key Laboratory of Immunodermatology (China Medical University), Department of education of Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.
| | - Hong-Duo Chen
- Department of Dermatology, The First Hospital of China Medical University, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,NHC Key Laboratory of Immunodermatology (China Medical University), No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology (China Medical University), Ministry of Education, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology, Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China.,Key Laboratory of Immunodermatology (China Medical University), Department of education of Liaoning Province, No.155 Nanjing Bei Street, Heping District, Shenyang, Liaoning Province, 110001, PR China
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Zhao F, Bai Y, Cao L, Han G, Fang C, Wei S, Chen Z. New electrochemical DNA sensor based on nanoflowers of Cu3(PO4)2-BSA-GO for hepatitis B virus DNA detection. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114184] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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17
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Zhu F, Li D, Ding Q, Lei C, Ren L, Ding X, Sun X. RETRACTED: 2D magnetic MoS2–Fe3O4 hybrid nanostructures for ultrasensitive exosome detection in GMR sensor. Biosens Bioelectron 2020; 147:111787. [DOI: 10.1016/j.bios.2019.111787] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/02/2019] [Accepted: 10/13/2019] [Indexed: 01/08/2023]
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18
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Advances in Magnetoresistive Biosensors. MICROMACHINES 2019; 11:mi11010034. [PMID: 31888076 PMCID: PMC7019276 DOI: 10.3390/mi11010034] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/22/2019] [Accepted: 12/24/2019] [Indexed: 01/05/2023]
Abstract
Magnetoresistance (MR) based biosensors are considered promising candidates for the detection of magnetic nanoparticles (MNPs) as biomarkers and the biomagnetic fields. MR biosensors have been widely used in the detection of proteins, DNAs, as well as the mapping of cardiovascular and brain signals. In this review, we firstly introduce three different MR devices from the fundamental perspectives, followed by the fabrication and surface modification of the MR sensors. The sensitivity of the MR sensors can be improved by optimizing the sensing geometry, engineering the magnetic bioassays on the sensor surface, and integrating the sensors with magnetic flux concentrators and microfluidic channels. Different kinds of MR-based bioassays are also introduced. Subsequently, the research on MR biosensors for the detection of protein biomarkers and genotyping is reviewed. As a more recent application, brain mapping based on MR sensors is summarized in a separate section with the discussion of both the potential benefits and challenges in this new field. Finally, the integration of MR biosensors with flexible substrates is reviewed, with the emphasis on the fabrication techniques to obtain highly shapeable devices while maintaining comparable performance to their rigid counterparts.
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Yin J, Suo Y, Zou Z, Sun J, Zhang S, Wang B, Xu Y, Darland D, Zhao JX, Mu Y. Integrated microfluidic systems with sample preparation and nucleic acid amplification. LAB ON A CHIP 2019; 19:2769-2785. [PMID: 31365009 PMCID: PMC8876602 DOI: 10.1039/c9lc00389d] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Rapid, efficient and accurate nucleic acid molecule detection is important in the screening of diseases and pathogens, yet remains a limiting factor at point of care (POC) treatment. Microfluidic systems are characterized by fast, integrated, miniaturized features which provide an effective platform for qualitative and quantitative detection of nucleic acid molecules. The nucleic acid detection process mainly includes sample preparation and target molecule amplification. Given the advancements in theoretical research and technological innovations to date, nucleic acid extraction and amplification integrated with microfluidic systems has advanced rapidly. The primary goal of this review is to outline current approaches used for nucleic acid detection in the context of microfluidic systems. The secondary goal is to identify new approaches that will help shape future trends at the intersection of nucleic acid detection and microfluidics, particularly with regard to increasing disease and pathogen detection for improved diagnosis and treatment.
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Affiliation(s)
- Juxin Yin
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, 310058, China.
| | - Yuanjie Suo
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, 310058, China.
| | - Zheyu Zou
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, 310058, China.
| | - Jingjing Sun
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, 310058, China.
| | - Shan Zhang
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, 310058, China.
| | - Beng Wang
- Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education), The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009 China and Institute of Translational Medicine, Zhejiang University, Hangzhou, 310029 China
| | - Yawei Xu
- College of Biological and Pharmaceutical Engineering, Jilin Agricultural Science and Technology University, Jilin, 132000 China
| | - Diane Darland
- Department of Biology, University of North Dakota, USA.
| | | | - Ying Mu
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, 310058, China.
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Gupta S, Kakkar V. DARPin based GMR Biosensor for the detection of ESAT-6 Tuberculosis Protein. Tuberculosis (Edinb) 2019; 118:101852. [DOI: 10.1016/j.tube.2019.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/02/2019] [Accepted: 07/19/2019] [Indexed: 10/26/2022]
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21
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Lin S, Zhi X, Chen D, Xia F, Shen Y, Niu J, Huang S, Song J, Miao J, Cui D, Ding X. A flyover style microfluidic chip for highly purified magnetic cell separation. Biosens Bioelectron 2019; 129:175-181. [DOI: 10.1016/j.bios.2018.12.058] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/10/2018] [Accepted: 12/29/2018] [Indexed: 02/07/2023]
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22
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Zhang H, Xu Y, Fohlerova Z, Chang H, Iliescu C, Neuzil P. LAMP-on-a-chip: Revising microfluidic platforms for loop-mediated DNA amplification. Trends Analyt Chem 2019; 113:44-53. [PMID: 32287531 PMCID: PMC7112807 DOI: 10.1016/j.trac.2019.01.015] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Nucleic acid amplification for the detection of infectious diseases, food pathogens, or assessment of genetic disorders require a laboratory setting with specialized equipment and technical expertise. Isothermal deoxyribonucleic acid amplification methods, such as loop-mediated isothermal amplification (LAMP), exhibit characteristics ideal for point-of-care (POC) applications, since their instrumentation is simpler in comparison with the standard method of polymerase chain reaction. Other key advantages of LAMP are robustness and the production of pyrophosphate in the presence of the target gene, enabling to detect the reaction products using the naked eye. Polymerase inhibitors, presented in clinical samples, do not affect the amplification process, making LAMP suitable for a simple sample-to-answer diagnostic systems with simplified sample preparation. In this review, we discuss the trends in miniaturized LAMP techniques, such as microfluidic, paper-based, and digital with their advantages and disadvantages, especially for POC applications alongside our opinion of the future development of miniaturized LAMP. Introduction of loop mediated isothermal amplification (LAMP) and its principle. Classical microfluidics-based LAMP for DNA/RNA detection. Paper-based LAMP. Microfluidic-based digital LAMP. Future of microfluidic LAMP development.
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Affiliation(s)
- Haoqing Zhang
- Northwestern Polytechnical University, School of Mechanical Engineering, Department of Microsystem Engineering, 127 West Youyi Road, Xi'an, Shaanxi, 710072, PR China
| | - Ying Xu
- Northwestern Polytechnical University, School of Mechanical Engineering, Department of Microsystem Engineering, 127 West Youyi Road, Xi'an, Shaanxi, 710072, PR China
| | - Zdenka Fohlerova
- Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61300 Brno, Czech Republic.,Faculty of Electrical Engineering, Brno University of Technology, Technická 3058/10, 61600 Brno, Czech Republic
| | - Honglong Chang
- Northwestern Polytechnical University, School of Mechanical Engineering, Department of Microsystem Engineering, 127 West Youyi Road, Xi'an, Shaanxi, 710072, PR China
| | - Ciprian Iliescu
- Biomedical Institute for Global Health Research and Technology (BIGHEART), National University of Singapore, MD6, 14 Medical Drive #14-01, 117599, Singapore
| | - Pavel Neuzil
- Northwestern Polytechnical University, School of Mechanical Engineering, Department of Microsystem Engineering, 127 West Youyi Road, Xi'an, Shaanxi, 710072, PR China.,Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61300 Brno, Czech Republic
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Nasseri B, Soleimani N, Rabiee N, Kalbasi A, Karimi M, Hamblin MR. Point-of-care microfluidic devices for pathogen detection. Biosens Bioelectron 2018; 117:112-128. [PMID: 29890393 PMCID: PMC6082696 DOI: 10.1016/j.bios.2018.05.050] [Citation(s) in RCA: 218] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/22/2018] [Accepted: 05/28/2018] [Indexed: 12/22/2022]
Abstract
The rapid diagnosis of pathogens is crucial in the early stages of treatment of diseases where the choice of the correct drug can be critical. Although conventional cell culture-based techniques have been widely utilized in clinical applications, newly introduced optical-based, microfluidic chips are becoming attractive. The advantages of the novel methods compared to the conventional techniques comprise more rapid diagnosis, lower consumption of patient sample and valuable reagents, easy application, and high reproducibility in the detection of pathogens. The miniaturized channels used in microfluidic systems simulate interactions between cells and reagents in microchannel structures, and evaluate the interactions between biological moieties to enable diagnosis of microorganisms. The overarching goal of this review is to provide a summary of the development of microfluidic biochips and to comprehensively discuss different applications of microfluidic biochips in the detection of pathogens. New types of microfluidic systems and novel techniques for viral pathogen detection (e.g. HIV, HVB, ZIKV) are covered. Next generation techniques relying on high sensitivity, specificity, lower consumption of precious reagents, suggest that rapid generation of results can be achieved via optical based detection of bacterial cells. The introduction of smartphones to replace microscope based observation has substantially improved cell detection, and allows facile data processing and transfer for presentation purposes.
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Affiliation(s)
- Behzad Nasseri
- Departments of Microbiology and Microbial Biotechnology and Nanobiotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran; Chemical Engineering Deptartment and Bioengineeing Division, Hacettepe University, 06800 Beytepe, Ankara, Turkey.
| | - Neda Soleimani
- Departments of Microbiology and Microbial Biotechnology and Nanobiotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran.
| | - Navid Rabiee
- Department of Chemistry, Shahid Beheshti University, Tehran, Iran.
| | - Alireza Kalbasi
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
| | - Mahdi Karimi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA; Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA.
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Xianyu Y, Wang Q, Chen Y. Magnetic particles-enabled biosensors for point-of-care testing. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.07.010] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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25
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Qi H, Yue S, Bi S, Ding C, Song W. Isothermal exponential amplification techniques: From basic principles to applications in electrochemical biosensors. Biosens Bioelectron 2018; 110:207-217. [PMID: 29625328 DOI: 10.1016/j.bios.2018.03.065] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/16/2018] [Accepted: 03/28/2018] [Indexed: 12/12/2022]
Abstract
As a conventional amplification technique, polymerase chain reaction (PCR) has been widely applied to detect a variety of analytes with exponential amplification efficiency. However, the requirement of thermocycling procedures largely limits the application of PCR-based methods. Alternatively, several isothermal amplification techniques have been developed since the early 1990s. In particular, according to the reaction kinetics, isothermal exponential amplification techniques possess higher amplification efficiency and detection sensitivity. The isothermal exponential amplification techniques can be mainly divided into two categories: enzyme-based isothermal exponential amplification and enzyme-free isothermal exponential amplification. Considering the advantages of high sensitivity and selectivity, high signal-to-noise ratio, low cost and rapid response time, exponential amplification electrochemical biosensors have attracted considerable attention. In this review, we introduce the basic principles of isothermal exponential amplification techniques and summarize their applications in electrochemical biosensors during the past five years. We also highlighted the present challenges and further perspectives of isothermal exponential amplification-based electrochemical biosensors.
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Affiliation(s)
- Hongjie Qi
- College of Chemistry and Chemical Engineering, Shandong Demonstration Center for Experimental Chemistry Education, Qingdao University, Qingdao 266071, PR China
| | - Shuzhen Yue
- College of Chemistry and Chemical Engineering, Shandong Demonstration Center for Experimental Chemistry Education, Qingdao University, Qingdao 266071, PR China
| | - Sai Bi
- College of Chemistry and Chemical Engineering, Shandong Demonstration Center for Experimental Chemistry Education, Qingdao University, Qingdao 266071, PR China.
| | - Caifeng Ding
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Weiling Song
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
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Zhao J, Gao J, Zheng T, Yang Z, Chai Y, Chen S, Yuan R, Xu W. Highly sensitive electrochemical assay for Nosema bombycis gene DNA PTP1 via conformational switch of DNA nanostructures regulated by H + from LAMP. Biosens Bioelectron 2018; 106:186-192. [PMID: 29427924 DOI: 10.1016/j.bios.2018.02.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/16/2018] [Accepted: 02/01/2018] [Indexed: 10/18/2022]
Abstract
The portable and rapid detection of biomolecules via pH meters to monitor the concentration of hydrogen ions (H+) from biological reactions (e.g. loop-mediated isothermal amplification, LAMP) has attracted research interest. However, this assay strategy suffered from inherent drawback of low sensitivity, resulting in great limitations in practical applications. Herein, a novel electrochemical biosensor was constructed for highly sensitive detection of Nosema bombycis gene DNA (PTP1) through transducing chemical stimuli H+ from PTP1-based LAMP into electrochemical output signal of electroactive ferrocene (Fc). With use of target PTP1 as the template, the H+ from LAMP induced the conformational switch of pH-responsive DNA nanostructures (DNA NSs, Fc-Sp@Ts) that was assembled by the hybridization of Fc-labeled signal probe (Fc-Sp) with DNA-based receptor (Ts). Due to the folding of Ts into stable triplex structure at decreased pH, the configuration change of Fc-Sp@Ts led to the releasing of Fc-Sp, which was subsequently immobilized in the electrode interface through the hybridization with the capture probe modified with -SH (SH-Cp), generating amplified electrochemical signal from Fc. The developed biosensor for PTP1 exhibited a reliable linear range of 1 fg µL-1 to 50 ng µL-1 with the limit of detection of 0.31 fg µL-1. Thus, by the regulation of H+ from LAMP reaction on DNA NSs allostery, this novel and simple transduction scheme would be interesting and promising to open up a novel analytical route for sensitive monitoring of different target DNAs in related disease diagnosis.
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Affiliation(s)
- Jianmin Zhao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Jiaxi Gao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ting Zheng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhehan Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yaqin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shihong Chen
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Wenju Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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27
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Sun X, Feng Z, Zhi S, Lei C, Zhang D, Zhou Y. An integrated microfluidic system using a micro-fluxgate and micro spiral coil for magnetic microbeads trapping and detecting. Sci Rep 2017; 7:12967. [PMID: 29021533 PMCID: PMC5636843 DOI: 10.1038/s41598-017-13389-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 09/22/2017] [Indexed: 12/26/2022] Open
Abstract
We report an innovative integrated microfluidic platform based on micro-fluxgate and micro-coils for trapping and detecting magnetic beads. A micro-spiral coil fabricated by microfabrication technology is used to trap the magnetic beads, and the micro-fluxgate is employed to detect the weak magnetic field induced by the trapped magnetic beads. The fabrication process of the magnetic bead trapping system using a micro-coil is highly compatible with that of the micro-fluxgate sensor, making fabrication of this integrated microfluidic system convenient and efficient. It is observed that the magnetic bead trapping ratio increases as the number of magnetic beads is increased with a flow rate of 5 to 16.5 μL·min−1. Samples spiked with different concentrations of magnetic beads can be distinguished clearly using the micro-fluxgate sensor in this microfluidic system. In this study, the results demonstrate that the microfluidic system traps and detects magnetic beads efficiently and is a promising candidate for biomarker capture and detection.
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Affiliation(s)
- Xuecheng Sun
- Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Micro/Nano Electronics, School of electronic information and electrical engineering, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai, 200240, China
| | - Zhu Feng
- Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Micro/Nano Electronics, School of electronic information and electrical engineering, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai, 200240, China
| | - Shaotao Zhi
- Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Micro/Nano Electronics, School of electronic information and electrical engineering, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai, 200240, China
| | - Chong Lei
- Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Micro/Nano Electronics, School of electronic information and electrical engineering, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai, 200240, China.
| | - Di Zhang
- Center for Advanced Electronic Materials and Devices, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai, 200240, China
| | - Yong Zhou
- Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Micro/Nano Electronics, School of electronic information and electrical engineering, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai, 200240, China.
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28
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Investigation of contactless detection using a giant magnetoresistance sensor for detecting prostate specific antigen. Biomed Microdevices 2017; 18:60. [PMID: 27379844 DOI: 10.1007/s10544-016-0084-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This paper presents a contactless detection method for detecting prostate specific antigen with a giant magnetoresistance sensor. In contactless detection case, the prostate specific antigen sample preparation was separated from the sensor that prevented the sensor from being immersed in chemical solvents, and made the sensor implementing in immediately reuse without wash. Experimental results showed that applied an external magnetic field in a range of 50 Oe to 90 Oe, Dynabeads with a concentration as low as 0.1 μg/mL can be detected by this system and could give an approximate quantitation to the logarithmic of Dynabeads concentration. Sandwich immunoassay was employed for preparing PSA samples. The PSA capture was implemented on a gold film modified with a self-assembled monolayer and using biotinylated secondary antibody against PSA and streptavidinylated Dynabeads. With DC magnetic field in the range of 50 to 90 Oe, PSA can be detected with a detection limit as low as 0.1 ng/mL. Samples spiked with different concentrations of PSA can be distinguished clearly. Due to the contactless detection method, the detection system exhibited advantages such as convenient manipulation, reusable, inexpensive, small weight. So, this detection method was a promising candidate in biomarker detection, especially in point of care detection.
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29
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Park JH, Jang H, Jung YK, Jung YL, Shin I, Cho DY, Park HG. A mass spectrometry-based multiplex SNP genotyping by utilizing allele-specific ligation and strand displacement amplification. Biosens Bioelectron 2017; 91:122-127. [DOI: 10.1016/j.bios.2016.10.065] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 10/23/2016] [Accepted: 10/24/2016] [Indexed: 01/21/2023]
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30
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Cherré S, Fernandes E, Germano J, Dias T, Cardoso S, Piedade MS, Rozlosnik N, Oliveira MI, Freitas PP. Rapid and specific detection of cell-derived microvesicles using a magnetoresistive biochip. Analyst 2017; 142:979-986. [DOI: 10.1039/c6an02651f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Specific and sensitive detection of endothelial MVs within physiologically relevant concentrations using a magnetoresistive biochip platform.
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Affiliation(s)
- Solène Cherré
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | | | - José Germano
- INESC Microsystems and Nanotechnologies and Instituto de Nanociencias e Nanotecnologias
- 1000-029 Lisbon
- Portugal
| | - Tomás Dias
- INESC Microsystems and Nanotechnologies and Instituto de Nanociencias e Nanotecnologias
- 1000-029 Lisbon
- Portugal
- Instituto Superior Tecnico
- Universidade de Lisboa
| | - Susana Cardoso
- INESC Microsystems and Nanotechnologies and Instituto de Nanociencias e Nanotecnologias
- 1000-029 Lisbon
- Portugal
- Instituto Superior Tecnico
- Universidade de Lisboa
| | - Moisés S. Piedade
- INESC Microsystems and Nanotechnologies and Instituto de Nanociencias e Nanotecnologias
- 1000-029 Lisbon
- Portugal
- Instituto de Engenharia de Sistemas e Computadores-Investigaçao e Desenvolvimento (INESC ID)
- Lisbon
| | - Noemi Rozlosnik
- Department of Micro- and Nanotechnology
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | - Marta I. Oliveira
- International Iberian Nanotechnology Laboratory
- 4715-330, Braga
- Portugal
| | - Paulo P. Freitas
- International Iberian Nanotechnology Laboratory
- 4715-330, Braga
- Portugal
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31
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Jiang H, Wu D, Song L, Yuan Q, Ge S, Min X, Xia N, Qian S, Qiu X. A Smartphone-Based Genotyping Method for Hepatitis B Virus at Point-of-Care Settings. SLAS Technol 2016; 22:122-129. [PMID: 27899699 DOI: 10.1177/2211068216680163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We reported a rapid, convenient, and easy-to-use genotyping method for hepatitis B virus (HBV) based on the smartphone at point-of-care (POC) settings. To perform HBV genotyping especially for genotypes A, B, C, and D, a smartphone is used to image and analyze a one-step immunoassay lateral flow strip functionalized with genotype-specific monoclonal antibodies (mAbs) on multiple capture lines. A light-emitting diode (LED) positioned on the top of the lateral flow strip is used to shine the multiple capture lines for excitation. Fluorescence detection is obtained with a smartphone whose camera is used to take the fluorescent images. An intelligent algorithm is developed to first identify each capture line from the fluorescent image and then determine the HBV genotype based on a genotyping model. Based on the pattern of the detection signal from different samples, a custom HBV genotyping model is developed. Custom application software running on a smartphone is developed with Java to collect and analyze the fluorescent image, display the genotyping result, and transmit it if necessary. Compared with the existing methods with nucleic acid analysis, more convenient, instant, and efficient HBV genotyping with significantly lower cost and a simpler procedure can be obtained with the developed smartphone POC HBV genotyping method.
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Affiliation(s)
- Huiqin Jiang
- 1 Institute of Microfluidic Chip Development in Biomedical Engineering, College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Di Wu
- 1 Institute of Microfluidic Chip Development in Biomedical Engineering, College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Liuwei Song
- 2 National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China
| | - Quan Yuan
- 2 National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China
| | - Shengxiang Ge
- 2 National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China
| | - Xiaoping Min
- 2 National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China
| | - Ningshao Xia
- 2 National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Xiamen University, Xiamen, Fujian, China
| | - Shizhi Qian
- 3 Institute of Micro/Nanotechnology, Old Dominion University, Norfolk, VA, USA
| | - Xianbo Qiu
- 1 Institute of Microfluidic Chip Development in Biomedical Engineering, College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, China
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32
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Nanomaterial-based in vitro analytical system for diagnosis and therapy in microfluidic device. BIOCHIP JOURNAL 2016. [DOI: 10.1007/s13206-016-0409-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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33
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Tian B, Ma J, Zardán Gómez de la Torre T, Bálint Á, Donolato M, Hansen MF, Svedlindh P, Strömberg M. Rapid Newcastle Disease Virus Detection Based on Loop-Mediated Isothermal Amplification and Optomagnetic Readout. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00379] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Bo Tian
- Department
of Engineering Sciences, Uppsala University, The Ångström Laboratory,
Box 534, SE-751 21 Uppsala, Sweden
| | - Jing Ma
- Department
of Immunology, Genetics and Pathology, Uppsala University, The Rudbeck Laboratory, SE-751 85 Uppsala, Sweden
| | | | - Ádám Bálint
- National
Food Chain Safety Office, Veterinary Diagnostic Directorate, Tábornok
u. 2., H-1143 Budapest, Hungary
| | - Marco Donolato
- BluSense Diagnostics, Fruebjergvej
3, 2100 Copenhagen, Denmark
| | - Mikkel Fougt Hansen
- Department
of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech, Building 345 East, DK-2800 Kongens Lyngby, Denmark
| | - Peter Svedlindh
- Department
of Engineering Sciences, Uppsala University, The Ångström Laboratory,
Box 534, SE-751 21 Uppsala, Sweden
| | - Mattias Strömberg
- Department
of Engineering Sciences, Uppsala University, The Ångström Laboratory,
Box 534, SE-751 21 Uppsala, Sweden
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34
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A fast and low-cost genotyping method for hepatitis B virus based on pattern recognition in point-of-care settings. Sci Rep 2016; 6:28274. [PMID: 27306485 PMCID: PMC4910285 DOI: 10.1038/srep28274] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 06/01/2016] [Indexed: 12/18/2022] Open
Abstract
A fast and low-cost method for HBV genotyping especially for genotypes A, B, C and D was developed and tested. A classifier was used to detect and analyze a one-step immunoassay lateral flow strip functionalized with genotype-specific monoclonal antibodies (mAbs) on multiple capture lines in the form of pattern recognition for point-of-care (POC) diagnostics. The fluorescent signals from the capture lines and the background of the strip were collected via multiple optical channels in parallel. A digital HBV genotyping model, whose inputs are the fluorescent signals and outputs are a group of genotype-specific digital binary codes (0/1), was developed based on the HBV genotyping strategy. Meanwhile, a companion decoding table was established to cover all possible pairing cases between the states of a group of genotype-specific digital binary codes and the HBV genotyping results. A logical analyzing module was constructed to process the detected signals in parallel without program control, and its outputs were used to drive a set of LED indicators, which determine the HBV genotype. Comparing to the nucleic acid analysis to HBV viruses, much faster HBV genotyping with significantly lower cost can be obtained with the developed method.
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35
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Derkus B. Applying the miniaturization technologies for biosensor design. Biosens Bioelectron 2016; 79:901-13. [DOI: 10.1016/j.bios.2016.01.033] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 01/11/2016] [Accepted: 01/12/2016] [Indexed: 12/11/2022]
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36
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Safavieh M, Kanakasabapathy MK, Tarlan F, Ahmed MU, Zourob M, Asghar W, Shafiee H. Emerging Loop-Mediated Isothermal Amplification-Based Microchip and Microdevice Technologies for Nucleic Acid Detection. ACS Biomater Sci Eng 2016; 2:278-294. [PMID: 28503658 PMCID: PMC5425166 DOI: 10.1021/acsbiomaterials.5b00449] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Rapid, sensitive, and selective pathogen detection is of paramount importance in infectious disease diagnosis and treatment monitoring. Currently available diagnostic assays based on polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA) are time-consuming, complex, and relatively expensive, thus limiting their utility in resource-limited settings. Loop-mediated isothermal amplification (LAMP) technique has been used extensively in the development of rapid and sensitive diagnostic assays for pathogen detection and nucleic acid analysis and hold great promise for revolutionizing point-of-care molecular diagnostics. Here, we review novel LAMP-based lab-on-a-chip (LOC) diagnostic assays developed for pathogen detection over the past several years. We review various LOC platforms based on their design strategies for pathogen detection and discuss LAMP-based platforms still in development and already in the commercial pipeline. This review is intended as a guide to the use of LAMP techniques in LOC platforms for molecular diagnostics and genomic amplifications.
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Affiliation(s)
- Mohammadali Safavieh
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
| | - Manoj K. Kanakasabapathy
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
| | - Farhang Tarlan
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
| | - Minhaz U. Ahmed
- Biosensors and Biotechnology Laboratory, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, Negara Brunei Darussalam
| | - Mohammed Zourob
- Department of Chemistry, College of Science, Alfaisal University, Al Zahrawi Street, Al Maather, Al Takhassusi Rd, Riyadh 11533, Saudi Arabia
| | - Waseem Asghar
- Department of Computer Engineering & Electrical Engineering and Computer Science, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida 33431, United States
| | - Hadi Shafiee
- Division of Biomedical Engineering, Division of Renal Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Lansdowne Street, Cambridge, Massachusetts 02139, United States
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37
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Lafleur JP, Jönsson A, Senkbeil S, Kutter JP. Recent advances in lab-on-a-chip for biosensing applications. Biosens Bioelectron 2016; 76:213-33. [DOI: 10.1016/j.bios.2015.08.003] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 07/31/2015] [Accepted: 08/03/2015] [Indexed: 12/15/2022]
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38
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Duarte-Guevara C, Swaminathan V, Reddy B, Huang JC, Liu YS, Bashir R. On-chip electrical detection of parallel loop-mediated isothermal amplification with DG-BioFETs for the detection of foodborne bacterial pathogens. RSC Adv 2016. [DOI: 10.1039/c6ra19685c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Over one million DG-BioFETs are used for the parallel electrical detection of LAMP reactions identifying the presence of bacterial pathogens, demonstrating a miniaturized DNA-based screening platform.
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Affiliation(s)
- Carlos Duarte-Guevara
- Department of Electrical and Computer Engineering
- University of Illinois at Urbana-Champaign
- Urbana
- USA
- Micro and Nanotechnology Laboratory
| | | | - Bobby Reddy
- Micro and Nanotechnology Laboratory
- University of Illinois at Urbana-Champaign
- Urbana
- USA
| | - Jui-Cheng Huang
- Design and Technology Platform
- Taiwan Semiconductor Manufacturing Company
- Hsinchu
- Taiwan
| | - Yi-Shao Liu
- Research and Ecosystem
- Delta Electronics Inc
- 417939 Singapore
| | - Rashid Bashir
- Department of Bioengineering
- University of Illinois at Urbana-Champaign
- Urbana
- USA
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39
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Xie Y, Zhi X, Su H, Wang K, Yan Z, He N, Zhang J, Chen D, Cui D. A Novel Electrochemical Microfluidic Chip Combined with Multiple Biomarkers for Early Diagnosis of Gastric Cancer. NANOSCALE RESEARCH LETTERS 2015; 10:477. [PMID: 26659608 PMCID: PMC4675772 DOI: 10.1186/s11671-015-1153-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/06/2015] [Indexed: 05/26/2023]
Abstract
Early diagnosis is very important to improve the survival rate of patients with gastric cancer and to understand the biology of cancer. In order to meet the clinical demands for early diagnosis of gastric cancer, we developed a disposable easy-to-use electrochemical microfluidic chip combined with multiple antibodies against six kinds of biomarkers (carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9), Helicobacter pylori CagA protein (H.P.), P53oncoprotein (P53), pepsinogen I (PG I), and PG-II). The six kinds of biomarkers related to gastric cancer can be detected sensitively and synchronously in a short time. The specially designed three electrodes system enables cross-contamination to be avoided effectively. The linear ranges of detection of the electrochemical microfluidic chip were as follows: 0.37-90 ng mL(-1) for CEA, 10.75-172 U mL(-1) for CA19-9, 10-160 U L(-1) for H.P., 35-560 ng mL(-1) for P53, 37.5-600 ng mL(-1) for PG I, and 2.5-80 ng mL(-1)for PG II. This method owns better sensitivity compared with enzyme-linked immunosorbent assay (ELISA) results of 394 specimens of gastric cancer sera. Furthermore, we established a multi-index prediction model based on the six kinds of biomarkers for predicting risk of gastric cancer. In conclusion, the electrochemical microfluidic chip for detecting multiple biomarkers has great potential in applications such as early screening of gastric cancer patients, and therapeutic evaluation, and real-time dynamic monitoring the progress of gastric cancer in near future.
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Affiliation(s)
- Yao Xie
- Department of Instrument Science and Engineering, Institute of Nano Biomedicine and Engineering, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China
| | - Xiao Zhi
- Department of Instrument Science and Engineering, Institute of Nano Biomedicine and Engineering, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China
- Institute of Translation Medicine, Tumor Personalized Therapy and Molecular Diagnosis Base of Ministry of Health and Family Planning Commission, Collaborative Innovational Center for System Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China
| | - Haichuan Su
- Department of Oncology, Tangdu Hospital, Fourth Military Medical University, 569 Xinsi Road, Xi'an, 710032, Peoples' Republic of China
| | - Kan Wang
- Department of Instrument Science and Engineering, Institute of Nano Biomedicine and Engineering, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China
| | - Zhen Yan
- Department of Pharmaceutics, Fourth Military Medical University, 18 Changle West Road, Xi'an, 710032, Peoples' Republic of China
| | - Nongyue He
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Peoples' Republic of China
| | - Jingpu Zhang
- Department of Instrument Science and Engineering, Institute of Nano Biomedicine and Engineering, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China
| | - Di Chen
- Department of Instrument Science and Engineering, Institute of Nano Biomedicine and Engineering, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China.
| | - Daxiang Cui
- Department of Instrument Science and Engineering, Institute of Nano Biomedicine and Engineering, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China.
- Institute of Translation Medicine, Tumor Personalized Therapy and Molecular Diagnosis Base of Ministry of Health and Family Planning Commission, Collaborative Innovational Center for System Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, Peoples' Republic of China.
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40
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Huo W, Gao Y, Zhang L, Shi S, Gao Y. A Novel High-Sensitivity Cardiac Multibiomarker Detection System Based on Microfluidic Chip and GMR Sensors. IEEE TRANSACTIONS ON MAGNETICS 2015; 51:1-4. [PMID: 0 DOI: 10.1109/tmag.2015.2457513] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
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41
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Wang DG, Brewster JD, Paul M, Tomasula PM. Two methods for increased specificity and sensitivity in loop-mediated isothermal amplification. Molecules 2015; 20:6048-59. [PMID: 25853320 PMCID: PMC6272222 DOI: 10.3390/molecules20046048] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 03/22/2015] [Accepted: 04/01/2015] [Indexed: 11/16/2022] Open
Abstract
The technique of loop-mediated isothermal amplification (LAMP) utilizes four (or six) primers targeting six (or eight) regions within a fairly small segment of a genome for amplification, with concentration higher than that used in traditional PCR methods. The high concentrations of primers used leads to an increased likelihood of non-specific amplification induced by primer dimers. In this study, a set of LAMP primers were designed targeting the prfA gene sequence of Listeria monocytogenes, and dimethyl sulfoxide (DMSO) as well as Touchdown LAMP were employed to increase the sensitivity and specificity of the LAMP reactions. The results indicate that the detection limit of this novel LAMP assay with the newly designed primers and additives was 10 fg per reaction, which is ten-fold more sensitive than a commercial Isothermal Amplification Kit and hundred-fold more sensitive than previously reported LAMP assays. This highly sensitive LAMP assay has been shown to detect 11 strains of Listeria monocytogenes, and does not detect other Listeria species (including Listeria innocua and Listeria invanovii), providing some advantages in specificity over commercial Isothermal Amplification Kits and previously reported LAMP assay.
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Affiliation(s)
- De-Guo Wang
- Henan Postdoctoral Research Base, Food and Bioengineering College, Xuchang University, Xuchang 461000, China.
| | - Jeffrey D Brewster
- Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, PA 19038, USA.
| | - Moushumi Paul
- Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, PA 19038, USA.
| | - Peggy M Tomasula
- Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, PA 19038, USA.
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Chang K, Deng S, Chen M. Novel biosensing methodologies for improving the detection of single nucleotide polymorphism. Biosens Bioelectron 2015; 66:297-307. [DOI: 10.1016/j.bios.2014.11.041] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/28/2014] [Accepted: 11/20/2014] [Indexed: 12/11/2022]
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43
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Warriner K, Reddy SM, Namvar A, Neethirajan S. Developments in nanoparticles for use in biosensors to assess food safety and quality. Trends Food Sci Technol 2014. [DOI: 10.1016/j.tifs.2014.07.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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44
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Zhang X, Lowe SB, Gooding JJ. Brief review of monitoring methods for loop-mediated isothermal amplification (LAMP). Biosens Bioelectron 2014; 61:491-9. [DOI: 10.1016/j.bios.2014.05.039] [Citation(s) in RCA: 194] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 01/20/2023]
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45
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Datta S, Chatterjee S, Veer V. Recent advances in molecular diagnostics of hepatitis B virus. World J Gastroenterol 2014; 20:14615-14625. [PMID: 25356025 PMCID: PMC4209528 DOI: 10.3748/wjg.v20.i40.14615] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 02/13/2014] [Accepted: 06/05/2014] [Indexed: 02/07/2023] Open
Abstract
Hepatitis B virus (HBV) is one of the important global health problems today. Infection with HBV can lead to a variety of clinical manifestations including severe hepatic complications like liver cirrhosis and hepatocellular carcinoma. Presently, routine HBV screening and diagnosis is primarily based on the immuno-detection of HBV surface antigen (HBsAg). However, identification of HBV DNA positive cases, who do not have detectable HBsAg has greatly encouraged the use of nucleic acid amplification based assays, that are highly sensitive, specific and are to some extent tolerant to sequence variation. In the last few years, the field of HBV molecular diagnostics has evolved rapidly with advancements in the molecular biology tools, such as polymerase chain reaction (PCR) and real-time PCR. Recently, apart of PCR based amplification methods, a number of isothermal amplification assays, such as loop mediated isothermal amplification, transcription mediated amplification, ligase chain reaction, and rolling circle amplification have been utilized for HBV diagnosis. These assays also offer options for real time detection and integration into biosensing devices. In this manuscript, we review the molecular technologies that are presently available for HBV diagnostics, with special emphasis on isothermal amplification based technologies. We have also included the recent trends in the development of biosensors and use of next generation sequencing technologies for HBV.
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46
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Lin G, Makarov D, Melzer M, Si W, Yan C, Schmidt OG. A highly flexible and compact magnetoresistive analytic device. LAB ON A CHIP 2014; 14:4050-8. [PMID: 25160858 DOI: 10.1039/c4lc00751d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A grand vision of realization of smart and compact multifunctional microfluidic devices for wearable health monitoring, environment sensing and point-of-care tests emerged with the fast development of flexible electronics. As a vital component towards this vision, magnetic functionality in flexible fluidics is still missing although demanded by the broad utility of magnetic nanoparticles in medicine and biology. Here, we demonstrate the first flexible microfluidic analytic device with integrated high-performance giant magnetoresistive (GMR) sensors. This device can be bent to a radius of 2 mm while still retaining its full performance. Various dimensions of magnetic emulsion droplets can be probed with high precision using a limit of detection of 0.5 pl, providing broad applicability in high-throughput droplet screening, flow cytometry and drug development. The flexible feature of this analytic device holds great promise in the realization of wearable, implantable multifunctional platforms for biomedical, pharmaceutical and chemical applications.
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Affiliation(s)
- Gungun Lin
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany.
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