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Rubby MF, Fonder C, Uchayash S, Liang X, Sakaguchi DS, Que L. Assessment of the Behaviors of an In Vitro Brain Model On-Chip under Shockwave Impacts. ACS APPLIED MATERIALS & INTERFACES 2024; 16:33246-33258. [PMID: 38905518 DOI: 10.1021/acsami.4c08026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
Herein we report the assessment of the effects of shockwave (SW) impacts on adult rat hippocampal progenitor cell (AHPC) neurospheres (NSs), which are used as in vitro brain models, for enhancing our understanding of the mechanisms of traumatic brain injury (TBI). The assessment has been achieved by using culture dishes and a new microchip. The microchip allows the chemicals released from the brain models cultured inside the cell culture chamber under SW impacts to diffuse to the nanosensors in adjacent sensor chambers through built-in diffusion barriers, which are used to prevent the cells from entering the sensor chambers, thereby mitigating the biofouling issues of the sensor surface. Experiments showed the negative impact of the SW on the viability, proliferation, and differentiation of the cells within the NSs. A qPCR gene expression analysis was performed and appeared to confirm some of the immunocytochemistry (ICC) results. Finally, we demonstrated that the microchip can be used to monitor lactate dehydrogenase (LDH) released from the AHPC-NSs subjected to SW impacts. As expected, LDH levels changed when AHPC-NSs were injured by SW impacts, verifying this chip can be used for assessing the degrees of injuries to AHPC-NSs by monitoring LDH levels. Taken together, these results suggest the feasibility of using the chip to better understand the interactions between SW impacts and in vitro brain models, paving the way for potentially establishing in vitro TBI models on a chip.
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Affiliation(s)
- Md Fazlay Rubby
- Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Catherine Fonder
- Molecular, Cellular, and Developmental Biology Program, Iowa State University, Ames, Iowa 50011, United States
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa 50011, United States
- Nanovaccine Institute, Iowa State University, Ames, Iowa 50011, United States
| | - Sajid Uchayash
- Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Xiaogan Liang
- Department of Mechanical Engineering, University of Michigan at Ann Arbor, Ann Arbor, Michigan 48109, United States
| | - Donald S Sakaguchi
- Molecular, Cellular, and Developmental Biology Program, Iowa State University, Ames, Iowa 50011, United States
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa 50011, United States
- Neuroscience Program, Iowa State University, Ames, Iowa 50011, United States
- Nanovaccine Institute, Iowa State University, Ames, Iowa 50011, United States
| | - Long Que
- Department of Electrical and Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
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Zhang C, Wu M, Hu S, Shi S, Duan Y, Hu W, Li Y. Label-Free, High-Throughput, Sensitive, and Logical Analysis Using Biomimetic Array Based on Stable Luminescent Copper Nanoclusters and Entropy-Driven Nanomachine. Anal Chem 2023; 95:11978-11987. [PMID: 37494597 DOI: 10.1021/acs.analchem.3c01650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
The development of an array for high-throughput and logical analysis of biomarkers is significant for disease diagnosis. DNA-templated copper nanoclusters (CuNCs) have a strong potential to serve as a label-free photoluminescence source in array platforms, but their luminescent stability and sensitivity need to be improved. Herein, we report a facile, sensitive, and robust biomimetic array assay by integrating with stable luminescent CuNCs and entropy-driven nanomachine (EDN). In this strategy, the luminescent stability of CuNCs was improved by adding fructose in CuNCs synthesis to offer a reliable label-free signal. Meanwhile, the DNA template for CuNCs synthesis was introduced into EDN with excellent signal amplification ability, in which the reaction triggered by target miRNA would cause the blunt/protruding conformation change of 3'-terminus accompanied by the production or loss of luminescence. In addition, a biomimetic array fabricated by photonic crystals (PCs) physically enhanced the emitted luminescent signal of CuNCs and achieved high-throughput signal readout by a microplate reader. The proposed assay can isothermally detect as low as 4.5 pM of miR-21. Moreover, the logical EDN was constructed to achieve logical analysis of multiple miRNAs by "AND" or "OR" logic gate operation. Therefore, the proposed assay has the advantages of label-free property, high sensitivity, flexible design, and high-throughput analysis, which provides ideas for developing a new generation of facile and smart platforms in the fields of biological analysis and clinical application.
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Affiliation(s)
- Chuyan Zhang
- State Key Laboratory of Respiratory Health and Multimorbidity, Precision Medicine Center, Medical Equipment Innovation Research Center, Med-X Center for Manufacturing, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Mengfan Wu
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Shunming Hu
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Shaorui Shi
- State Key Laboratory of Respiratory Health and Multimorbidity, Department of Laboratory Medicine, Precision Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yixiang Duan
- Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu, Sichuan 610065, P.R. China
| | - Wenchuang Hu
- State Key Laboratory of Respiratory Health and Multimorbidity, Precision Medicine Center, Medical Equipment Innovation Research Center, Med-X Center for Manufacturing, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yongxin Li
- West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Mao S, Zhao J, Ding X, Vuong VA, Song J, Que L. Integrated Sensing Chip for Ultrasensitive Label-Free Detection of the Products of Loop-Mediated Isothermal Amplification. ACS Sens 2023; 8:2255-2262. [PMID: 37276452 DOI: 10.1021/acssensors.3c00227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Loop-mediated isothermal amplification (LAMP) is a nucleic acid amplification technique that has been widely used for the detection of pathogens in many organisms. Current LAMP-based sensors usually require the LAMP products to be labeled in order for them to be detected. Here, we present a novel label-free LAMP chip, which consists of a nanopore thin-film sensor embedded inside a LAMP reaction chamber. A fraction of LAMP primers is immobilized on the sensor surface, allowing the LAMP products to be synthesized and bound to the sensor surface via immobilized primers. After the LAMP reaction components are removed from the reaction chamber, the amplified LAMP products bound to the sensor surface give rise to significantly increased transducing signals, which can be measured by a portable optical spectrometer through an optical fiber probe. As a demonstration, we used the LAMP chip to detect the causal agent of late blight, Phytophthora infestans, which is one of the most devastating plant pathogens and poses a major threat to sustainable crop production worldwide. We show that this chip can detect as low as 1 fg/μL of P. infestans DNA in 30 min, which corresponds to an attomolar level of 1.6 × 10-6 attomole/μL and is at least 10 times more sensitive than the currently available methods. This label-free sensing technology holds great promise to open up a new avenue for ultrasensitive, highly specific, rapid, and cost-effective point-of-care diagnostics of plant, animal, human, and foodborne pathogens.
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Affiliation(s)
- Subin Mao
- Electrical and Computer Engineering Department, Iowa State University, Ames, Iowa 50011, United States
| | - Jinping Zhao
- Texas A&M AgriLife Research Center at Dallas, Texas A&M University System, Dallas, Texas 75252, United States
| | - Xiaoke Ding
- Electrical and Computer Engineering Department, Iowa State University, Ames, Iowa 50011, United States
| | - Van Anh Vuong
- Texas A&M AgriLife Research Center at Dallas, Texas A&M University System, Dallas, Texas 75252, United States
| | - Junqi Song
- Texas A&M AgriLife Research Center at Dallas, Texas A&M University System, Dallas, Texas 75252, United States
- Department of Plant Pathology & Microbiology, Texas A&M University, College Station, Texas 77843, United States
| | - Long Que
- Electrical and Computer Engineering Department, Iowa State University, Ames, Iowa 50011, United States
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Makela M, Lin Z, Lin PT. Rapid Detection of SARS-CoV-2 Genetic Targets Using Nanoporous Waveguide Based Competitive Displacement Assay. GIANT (OXFORD, ENGLAND) 2023:100173. [PMID: 37360824 PMCID: PMC10279466 DOI: 10.1016/j.giant.2023.100173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Rapid detection of unlabeled SARS-CoV-2 genetic target was demonstrated using a competitive displacement hybridization assay made by a nanostructured anodized alumina oxide (AAO) membrane. The assay applied the toehold-mediated strand displacement reaction. The nanoporous surface of the membrane was functionalized with a complementary pair consisting of Cy3-labeled probe and quencher-labeled nucleic acids through a chemical immobilization process. In the presence of the unlabeled SARS-CoV-2 target, the quencher-tagged strand of the immobilized probe-quencher duplex was separated from the Cy3-modifed strand. A stable probe-target duplex formed and regained a strong fluorescence signal, thus enabling real-time and label-free SARS-CoV-2 detection. Assay designs with different numbers of base pair (bp) matches were synthesized to compare their affinities. Because of the large surface of a free-standing nanoporous membrane, two orders enhancement of the fluorescence was observed, where the detection limit of the unlabeled concentration can be improved to 1 nM. The assay was miniaturized by integrating a nanoporous AAO layer onto an optical waveguide device. The detection mechanism and the sensitivity improvement of the AAO-waveguide device were illustrated from the finite difference method (FDM) simulation and the experimental results. Light-analyte interaction was further improved due to the presence of the AAO layer, which created an intermediate refractive index and enhanced the waveguide's evanescent field. Our competitive hybridization sensor is an accurate and label-free testing platform applicable to the deployment of compact and sensitive virus detection strategies.
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Affiliation(s)
- Megan Makela
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843
| | - Zhihai Lin
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843
| | - Pao Tai Lin
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843
- Center for Remote Health Technologies and Systems, Texas A&M University, College Station, Texas 77843
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Annese VF, Hu C. Integrating Microfluidics and Electronics in Point-of-Care Diagnostics: Current and Future Challenges. MICROMACHINES 2022; 13:1923. [PMID: 36363944 PMCID: PMC9699090 DOI: 10.3390/mi13111923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/01/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Point-of-Care (POC) diagnostics have gained increasing attention in recent years due to its numerous advantages over conventional diagnostic approaches. As proven during the recent COVID-19 pandemic, the rapidity and portability of POC testing improves the efficiency of healthcare services and reduces the burden on healthcare providers. There are hundreds of thousands of different applications for POC diagnostics, however, the ultimate requirement for the test is the same: sample-in and result-out. Many technologies have been implemented, such as microfluidics, semiconductors, and nanostructure, to achieve this end. The development of even more powerful POC systems was also enabled by merging multiple technologies into the same system. One successful example is the integration of microfluidics and electronics in POC diagnostics, which has simplified the sample handling process, reduced sample usage, and reduced the cost of the test. This review will analyze the current development of the POC diagnostic systems with the integration of microfluidics and electronics and discuss the future challenges and perspectives that researchers might have.
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Affiliation(s)
- Valerio Francesco Annese
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, 20133 Milan, Italy
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Chunxiao Hu
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
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Haroon M, Tahir M, Nawaz H, Majeed MI, Al-Saadi AA. Surface-enhanced Raman scattering (SERS) spectroscopy for prostate cancer diagnosis: A review. Photodiagnosis Photodyn Ther 2021; 37:102690. [PMID: 34921990 DOI: 10.1016/j.pdpdt.2021.102690] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 11/28/2021] [Accepted: 12/13/2021] [Indexed: 12/13/2022]
Abstract
The present review focuses on the diagnosis of prostate cancer using surface enhanced Raman scattering (SERS) spectroscopy. On the basis of literature search, SERS-based analysis for prostate cancer detection of different sample types is reported in the present study. Prostate cancer is responsible for nearly one-tenth of all cell cancer deaths among men. Significant efforts have been dedicated to establish precise and sensitive monitoring techniques to detect prostate cancer biomarkers in different types of body samples. Among the various spectro-analytical techniques investigated to achieve this objective, SERS spectroscopy has been proven as a promising approach that provides noticeable enhancements of the Raman sensitivity when the target biomolecules interact with a nanostructured surface. The purpose of this review is to give a brief overview of the SERS-basedapproach and other spectro-analytical strategies being used for the detection and quantification of prostate cancer biomarkers. The revolutionary development of SERS methods for the diagnosis of prostate cancer has been discussed in more details based on the reported literature. It has been noticed that the SERS-based immunoassay presents reliable results for the prostate cancer quantification. The EC-SERS, which integrates electrochemistry with the SERS model, could also offer a potential ultrasensitive strategy, although its application in prostate cancer analysis has been still limited.
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Affiliation(s)
- Muhammad Haroon
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Muhammad Tahir
- Department of Chemistry, University of Agriculture Faisalabad, Pakistan
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture Faisalabad, Pakistan
| | | | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; Interdisciplinary Research Center (IRC) in Refinery and Advanced Chemicals, Dhahran 31261, Saudi Arabia.
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Annese VF, Patil SB, Hu C, Giagkoulovits C, Al-Rawhani MA, Grant J, Macleod M, Clayton DJ, Heaney LM, Daly R, Accarino C, Shah YD, Cheah BC, Beeley J, Evans TRJ, Jones R, Barrett MP, Cumming DRS. A monolithic single-chip point-of-care platform for metabolomic prostate cancer detection. MICROSYSTEMS & NANOENGINEERING 2021; 7:21. [PMID: 34567735 PMCID: PMC8433377 DOI: 10.1038/s41378-021-00243-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 11/05/2020] [Accepted: 12/15/2020] [Indexed: 05/18/2023]
Abstract
There is a global unmet need for rapid and cost-effective prognostic and diagnostic tools that can be used at the bedside or in the doctor's office to reduce the impact of serious disease. Many cancers are diagnosed late, leading to costly treatment and reduced life expectancy. With prostate cancer, the absence of a reliable test has inhibited the adoption of screening programs. We report a microelectronic point-of-care metabolite biomarker measurement platform and use it for prostate cancer detection. The platform, using an array of photodetectors configured to operate with targeted, multiplexed, colorimetric assays confined in monolithically integrated passive microfluidic channels, completes a combined assay of 4 metabolites in a drop of human plasma in under 2 min. A preliminary clinical study using l-amino acids, glutamate, choline, and sarcosine was used to train a cross-validated random forest algorithm. The system demonstrated sensitivity to prostate cancer of 94% with a specificity of 70% and an area under the curve of 0.78. The technology can implement many similar assay panels and hence has the potential to revolutionize low-cost, rapid, point-of-care testing.
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Affiliation(s)
- Valerio F. Annese
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Samadhan B. Patil
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Chunxiao Hu
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Christos Giagkoulovits
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Mohammed A. Al-Rawhani
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - James Grant
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Martin Macleod
- Beatson West of Scotland Cancer Centre, Glasgow, G12 0YN UK
| | - David J. Clayton
- School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NF UK
| | - Liam M. Heaney
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, LE11 3TU UK
| | - Ronan Daly
- Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G61 1BD UK
| | - Claudio Accarino
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Yash D. Shah
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Boon C. Cheah
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - James Beeley
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
| | - Thomas R. Jeffry Evans
- Institute of Cancer Sciences, Beatson West of Scotland Cancer Centre, University of Glasgow, Glasgow, G12 0YN UK
| | - Robert Jones
- Institute of Cancer Sciences, Beatson West of Scotland Cancer Centre, University of Glasgow, Glasgow, G12 0YN UK
| | - Michael P. Barrett
- Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G61 1BD UK
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, G12 8TA UK
| | - David R. S. Cumming
- Electronics and Nanoscale Engineering, James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ UK
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Rho D, Breaux C, Kim S. Label-Free Optical Resonator-Based Biosensors. SENSORS 2020; 20:s20205901. [PMID: 33086566 PMCID: PMC7589515 DOI: 10.3390/s20205901] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 12/11/2022]
Abstract
The demand for biosensor technology has grown drastically over the last few decades, mainly in disease diagnosis, drug development, and environmental health and safety. Optical resonator-based biosensors have been widely exploited to achieve highly sensitive, rapid, and label-free detection of biological analytes. The advancements in microfluidic and micro/nanofabrication technologies allow them to be miniaturized and simultaneously detect various analytes in a small sample volume. By virtue of these advantages and advancements, the optical resonator-based biosensor is considered a promising platform not only for general medical diagnostics but also for point-of-care applications. This review aims to provide an overview of recent progresses in label-free optical resonator-based biosensors published mostly over the last 5 years. We categorized them into Fabry-Perot interferometer-based and whispering gallery mode-based biosensors. The principles behind each biosensor are concisely introduced, and recent progresses in configurations, materials, test setup, and light confinement methods are described. Finally, the current challenges and future research topics of the optical resonator-based biosensor are discussed.
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On-Chip Detection of the Biomarkers for Neurodegenerative Diseases: Technologies and Prospects. MICROMACHINES 2020; 11:mi11070629. [PMID: 32605280 PMCID: PMC7407176 DOI: 10.3390/mi11070629] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/23/2020] [Accepted: 06/23/2020] [Indexed: 12/17/2022]
Abstract
Alzheimer's disease (AD), Parkinson's disease (PD) and glaucoma are all regarded as neurodegenerative diseases (neuro-DDs) because these diseases are highly related to the degeneration loss of functions and death of neurons with aging. The conventional diagnostic methods such as neuroimaging for these diseases are not only expensive but also time-consuming, resulting in significant financial burdens for patients and public health challenge for nations around the world. Hence early detection of neuro-DDs in a cost-effective and rapid manner is critically needed. For the past decades, some chip-based detection technologies have been developed to address this challenge, showing great potential in achieving point-of-care (POC) diagnostics of neuro-DDs. In this review, chip-based detection of neuro-DDs' biomarkers enabled by different transducing mechanisms is evaluated.
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Abbasy L, Mohammadzadeh A, Hasanzadeh M, Ehsani M, Mokhtarzadeh A. Biosensing of prostate specific antigen (PSA) in human plasma samples using biomacromolecule encapsulation into KCC-1-npr-NH 2: A new platform for prostate cancer detection. Int J Biol Macromol 2020; 154:584-595. [PMID: 32173432 DOI: 10.1016/j.ijbiomac.2020.03.093] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 12/14/2022]
Abstract
Prostate-specific antigen (PSA) is a high molecular weight glycoprotein that is used as a marker for the diagnosis of prostate cancer and is therefore important in the medical field. In this study, a novel sandwich type immunoassay was designed based on encapsulation of biotinylated antibody into KCC-1-npr-NH2. KCC-1-npr-NH2 stabilized the stability of the primary antibody. So, encapsulated Ab1 was immobilized on the surface of glassy carbon electrode. Field emission scanning electron microscope (FE-SEM) was employed to monitor the sensor fabrication. The engineered immunosensor was used for the detection of PSA using differential pulse voltammetry (DPVs) and square wave voltammetry (SWVs) techniques. The proposed interface lead to enhancement of accessible surface area for immobilizing a high amount of anti-PSA antibody, increasing electrical conductivity, boosting stability, catalytic properties and biocompatibility. The intensity of electrochemical signals is also increased by the use of AuNPs functionalized with CysA used in secondary antibody (HRP conjugated PSA) structure. Under optimal conditions, the designed immuno-assay provide a good analytical performance for quantifying the PSA marker in the linear range of 1 to 60 μg/l.
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Affiliation(s)
- Leila Abbasy
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biochemistry, Higher Education Institute of Rab-Rashid, Tabriz 51664, Iran
| | - Arezoo Mohammadzadeh
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Maryam Ehsani
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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11
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Shayesteh OH, Ghavami R. A novel label-free colorimetric aptasensor for sensitive determination of PSA biomarker using gold nanoparticles and a cationic polymer in human serum. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117644. [PMID: 31614271 DOI: 10.1016/j.saa.2019.117644] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/25/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
In this colorimetric assay for sensitive detection of prostate specific antigen (PSA) tumor marker, adsorbed non-thiolated poly-Adenine aptamer (polyA Apt) on the gold nanoparticles (AuNPs) surface was used. By incubating the AuNPs and the PSA specific aptamer prior to target addition, polyA Apt adsorbed on the gold nanoparticles and could bind the target while preventing non-specific interactions. Adsorbed polyA Apt on the AuNPs prevents aggregation of them by poly(diallyldimethylammoniumchloride) (PDDA). Upon the addition of PSA, it bind to the polyA Apt and induce the formation of a secondary structure. Therefore, interaction between polyA Apt and PDDA is repressed and PDDA induce the aggregation of the AuNPs. This analytical platform produces a remarkable optical signal in the absence and presence of PSA that accompanied by a color change from red to blue. This effect as a sensing strategy can be observed with naked eyes and quantified by colorimetry via measurement of the ratio of absorbances at 680 nm and 520 nm. Fabricated aptasensor for detection of PSA is linear in the concentration range of 0.1-100 ng/ml with 20 pg/ml as the limit of detection (S/N = 3). Because of the selectively recognized for PSA in the presence of other interfering substances, this proposed assay applied to real samples for the rapid screening of PSA.
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Affiliation(s)
- Omid Heydari Shayesteh
- Department of Chemistry, Faculty of Science, University of Kurdistan, P. O. Box 416, Sanandaj, Iran
| | - Raouf Ghavami
- Department of Chemistry, Faculty of Science, University of Kurdistan, P. O. Box 416, Sanandaj, Iran.
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12
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Yazdani Z, Yadegari H, Heli H. A molecularly imprinted electrochemical nanobiosensor for prostate specific antigen determination. Anal Biochem 2019; 566:116-125. [DOI: 10.1016/j.ab.2018.11.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/31/2018] [Accepted: 11/21/2018] [Indexed: 11/30/2022]
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13
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Yu Z, Lei Y, Yu W, Cheng J, Xing J, Zheng X, Zhan Z, Wang B, Guo C. Fluorescence enhanced lab-on-a-chip patterned using a hybrid technique of femtosecond laser direct writing and anodized aluminum oxide porous nanostructuring. NANOSCALE ADVANCES 2019; 1:3474-3484. [PMID: 36133573 PMCID: PMC9418693 DOI: 10.1039/c9na00352e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 07/15/2019] [Indexed: 05/14/2023]
Abstract
A nanoporous array structure detection chip with strong spectral resolution, fabricated by femtosecond laser direct writing and anodized aluminum oxide.
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Affiliation(s)
- Zhi Yu
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Yuhao Lei
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Weili Yu
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Jinluo Cheng
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Jun Xing
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Xin Zheng
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Zhibing Zhan
- The Institute of Optics
- University of Rochester
- Rochester
- USA
| | - Bin Wang
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
| | - Chunlei Guo
- The Guo China-US Photonics Laboratory
- Changchun Institute of Optics
- Fine Mechanics and Physics
- Chinese Academy of Sciences
- Changchun
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14
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Jing A, Zhang C, Liang G, Feng W, Tian Z, Jing C. Hyaluronate-Functionalized Graphene for Label-Free Electrochemical Cytosensing. MICROMACHINES 2018; 9:E669. [PMID: 30567299 PMCID: PMC6315524 DOI: 10.3390/mi9120669] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/12/2018] [Accepted: 12/15/2018] [Indexed: 12/15/2022]
Abstract
Electrochemical sensors for early tumor cell detection are currently an important area of research, as this special region directly improves the efficiency of cancer treatment. Functional graphene is a promising alternative for selective recognition and capture of target cancer cells. In our work, an effective cytosensor of hyaluronate-functionalized graphene (HG) was prepared through chemical reduction of graphene oxide. The as-prepared HG nanostructures were characterized with Fourier transform infrared spectroscopy and transmission electron microscopy coupled with cyclic voltammograms and electrochemical impedance spectroscopy, respectively. The self-assembly of HG with ethylene diamine, followed by sodium hyaluronate, enabled the fabrication of a label-free electrochemical impedance spectroscopy cytosensor with high stability and biocompatibility. Finally, the proposed cytosensor exhibited satisfying electrochemical behavior and cell-capture capacity for human colorectal cancer cells HCT-116, and also displayed a wide linear range, from 5.0 × 10² cells∙mL-1 to 5.0 × 10⁶ cells∙mL-1, and a low detection limit of 100 cells∙mL-1 (S/N = 3) for quantification. This work paves the way for graphene applications in electrochemical cytosensing and other bioassays.
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Affiliation(s)
- Aihua Jing
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, China.
| | - Chunxin Zhang
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, China.
| | - Gaofeng Liang
- Medical College, Henan University of Science and Technology, Luoyang 471023, China.
| | - Wenpo Feng
- School of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang 471023, China.
| | - Zhengshan Tian
- School of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China.
| | - Chenhuan Jing
- Pingdingshan No. 1 Middle School, Pingdingshan 467000, China.
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15
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Song C, Ding X, Que L. High-resolution, flexible, and transparent nanopore thin film sensor enabled by cascaded Fabry-Perot effect. OPTICS LETTERS 2018; 43:3057-3060. [PMID: 29957780 DOI: 10.1364/ol.43.003057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 05/04/2018] [Indexed: 06/08/2023]
Abstract
This Letter reports a method to significantly improve the optical resolution of the anodic aluminum oxide (AAO) nanopore thin film sensor based on multi-cavity Fabry-Perot interference. The newly designed sensor is fabricated by bonding a layer of transparent polymer thin film (pTF), which is polydimethylsiloxane (PDMS), to a transparent AAO thin film to form a flexible pTF-nanopore sensor. In comparison with the AAO nanopore thin film sensor, the pTF-nanopore sensor shows a much-improved quality (Q) factor and optical resolution. Typical thicknesses of a PDMS layer and an AAO layer of the pTF-nanopore sensor are 80 μm and 2 μm, respectively. The pTF-nanopore sensor used for angle detection shows a sensitivity of 0.4 nm/deg with a resolution of 0.2 deg. The pTF-nanopore sensor can also be used for temperature monitoring with a sensitivity of 0.2 nm/°C and a resolution of 1°C.
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16
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Hayes B, Murphy C, Crawley A, O'Kennedy R. Developments in Point-of-Care Diagnostic Technology for Cancer Detection. Diagnostics (Basel) 2018; 8:diagnostics8020039. [PMID: 29865250 PMCID: PMC6023377 DOI: 10.3390/diagnostics8020039] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/22/2018] [Accepted: 05/25/2018] [Indexed: 12/12/2022] Open
Abstract
Cancer is the cause of death for one in seven individuals worldwide. It is widely acknowledged that screening and early diagnosis are of vital importance for improving the likelihood of recovery. However, given the costly, time-consuming, and invasive nature of the many methods currently in use, patients often do not take advantage of the services available to them. Consequently, many researchers are exploring the possibility of developing fast, reliable, and non-invasive diagnostic tools that can be used directly or by local physicians at the point-of-care. Herein, we look at the use of established biomarkers in cancer therapy and investigate emerging biomarkers exhibiting future potential. The incorporation of these biomarkers into point-of-care devices could potentially reduce the strain currently experienced by screening programs in hospitals and healthcare systems. Results derived from point-of-care tests should be accurate, sensitive, and generated rapidly to assist in the selection of the best course of treatment for optimal patient care. Essentially, point-of-care diagnostics should enhance the well-being of patients and lead to a reduction in cancer-related deaths.
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Affiliation(s)
- Bryony Hayes
- Translational Health Sciences, Bristol Medical School, Dorothy Hodgkin Building, Whitson Street, Bristol BS1 3NY, UK.
| | - Caroline Murphy
- School of Biotechnology, Dublin City University, Collins Avenue, Glasnevin, Dublin D09 Y5N0, Ireland.
| | - Aoife Crawley
- School of Biotechnology, Dublin City University, Collins Avenue, Glasnevin, Dublin D09 Y5N0, Ireland.
| | - Richard O'Kennedy
- School of Biotechnology, Dublin City University, Collins Avenue, Glasnevin, Dublin D09 Y5N0, Ireland.
- Hamad Bin Khalifa University, Research Complex, P.O. Box 34110 Doha, Qatar.
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17
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Song C, Deng P, Que L. Rapid multiplexed detection of beta-amyloid and total-tau as biomarkers for Alzheimer's disease in cerebrospinal fluid. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:1845-1852. [PMID: 29857195 DOI: 10.1016/j.nano.2018.05.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 05/08/2018] [Accepted: 05/21/2018] [Indexed: 12/29/2022]
Abstract
This paper reports the multiplexed monitoring of two promising biomarkers, beta-amyloid (Aβ42) and total tau (T-tau), in both buffer and cerebrospinal fluid (CSF) for Alzheimer's disease (AD) using label-free optical nanosensors. It has been found that 7.8 pg/ml of Aβ42 in buffer and 15.6 pg/ml of T-au in buffer can be readily detected with very good specificity. Based on our measurements, the purchased CSF itself contains Aβ42, whose concentration is estimated to be about 400 pg/ml. Aβ42 and T-tau in the mixtures of Aβ42 and T-tau spiked in CSF have been detected successfully, indicating the feasibility of the optical nanosensors to detect these biomarkers in clinical samples. For the measurements, only a small amount (~1 μl) of the samples is required. This type of sensor is suitable for point-of-care application to diagnose the AD due to its low cost and ease-of-operation.
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Affiliation(s)
- Chao Song
- Electrical and Computer Engineering Department, Iowa State University, USA
| | - Pan Deng
- Electrical and Computer Engineering Department, Iowa State University, USA
| | - Long Que
- Electrical and Computer Engineering Department, Iowa State University, USA.
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18
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Feng S, Chen C, Wang W, Que L. An aptamer nanopore-enabled microsensor for detection of theophylline. Biosens Bioelectron 2018; 105:36-41. [PMID: 29351868 DOI: 10.1016/j.bios.2018.01.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 01/07/2018] [Accepted: 01/08/2018] [Indexed: 02/07/2023]
Abstract
This paper reports an aptamer-based nanopore thin film sensor for detecting theophylline in the buffer solution and complex fluids including plant extracts and serum samples. Compared to antibody-based detection, aptamer-based detection offers many advantages such as low cost and high stability at elevated temperatures. Experiments found that this type of sensor can readily detect theophylline at a concentration as low as 0.05µM, which is much lower than the detection limit of current lab-based equipment such as liquid chromatography (LC). Experiments also found that the aptamer-based sensor has good specificity, selectivity, and reasonable reusability with a significantly improved dynamic detection range. By using the same nanopore thin film sensors as the reference sensors to further mitigate the non-specific binding effect, the theophylline in plant extracts and serum has been detected. Only a small amount (~1μL) of plant extracts or serum samples is required to measure theophylline. Its low cost and ease-of-operation make this type of sensor suitable for point-of-care application to monitor the theophylline level of patients in real time.
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Affiliation(s)
- Silu Feng
- Electrical and Computer Engineering Department, Iowa State University, USA
| | - Changtian Chen
- Plant Pathology and Microbiology Department, Iowa State University, USA
| | - Wei Wang
- Plant Pathology and Microbiology Department, Iowa State University, USA.
| | - Long Que
- Electrical and Computer Engineering Department, Iowa State University, USA.
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19
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Sattarahmady N, Rahi A, Heli H. A signal-on built in-marker electrochemical aptasensor for human prostate-specific antigen based on a hairbrush-like gold nanostructure. Sci Rep 2017; 7:11238. [PMID: 28894225 PMCID: PMC5593896 DOI: 10.1038/s41598-017-11680-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 08/29/2017] [Indexed: 01/15/2023] Open
Abstract
A green electrodeposition method was firstly employed for the synthesis of round hairbrush-like gold nanostructure in the presence of cadaverine as a size and shape directing additive. The nanostructure which comprised of arrays of nanospindles was then applied as a transducer to fabricate a signal-on built in-marker electrochemical aptasensor for the detection of human prostate-specific antigen (PSA). The aptasensor detected PSA with a linear concentration range of 0.125 to 128 ng mL-1 and a limit of detection of 50 pg mL-1. The aptasensor was then successfully applied to detect PSA in the blood serum samples of healthy and patient persons.
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Affiliation(s)
- Naghmeh Sattarahmady
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amid Rahi
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Heli
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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20
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Jayanthi VSPKSA, Das AB, Saxena U. Recent advances in biosensor development for the detection of cancer biomarkers. Biosens Bioelectron 2016; 91:15-23. [PMID: 27984706 DOI: 10.1016/j.bios.2016.12.014] [Citation(s) in RCA: 254] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/24/2016] [Accepted: 12/07/2016] [Indexed: 02/08/2023]
Abstract
Cancer is the second largest disease throughout the world with an increasing mortality rate over the past few years. The patient's survival rate is uncertain due to the limitations of cancer diagnosis and therapy. Early diagnosis of cancer is decisive for its successful treatment. A biomarker-based cancer diagnosis may significantly improve the early diagnosis and subsequent treatment. Biosensors play a crucial role in the detection of biomarkers as they are easy to use, portable, and can do analysis in real time. This review describes various biosensors designed for detecting nucleic acid and protein-based cancer biomarkers for cancer diagnosis. It mainly lays emphasis on different approaches to use electrochemical, optical, and mass-based transduction systems in cancer biomarker detection. It also highlights the analytical performances of various biosensor designs concerning cancer biomarkers in detail.
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Affiliation(s)
| | - Asim Bikas Das
- Department of Biotechnology, National Institute of Technology Warangal, Warangal 506004, Telangana, India
| | - Urmila Saxena
- Department of Biotechnology, National Institute of Technology Warangal, Warangal 506004, Telangana, India.
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21
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Rahi A, Sattarahmady N, Heli H. Label-free electrochemical aptasensing of the human prostate-specific antigen using gold nanospears. Talanta 2016; 156-157:218-224. [PMID: 27260456 DOI: 10.1016/j.talanta.2016.05.029] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/03/2016] [Accepted: 05/05/2016] [Indexed: 12/22/2022]
Abstract
Gold nanospears were electrodeposited with the assistance of arginine as a soft template and precise selection of experimental parameters. The nanospears were then employed as a transducer to immobilize an aptamer of prostate-specific antigen (PSA) and fabrication of a label-free electrochemical aptasensor. The aptasensor was employed for the detection of PSA with a linear concentration range of 0.125-200ngmL(-1) and a limit of detection of 50pgmL(-1). The aptasensor was successfully applied to detect PSA in blood serum samples of healthy and patient persons.
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Affiliation(s)
- A Rahi
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - N Sattarahmady
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - H Heli
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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22
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Alzghoul S, Hailat M, Zivanovic S, Que L, Shah GV. Measurement of serum prostate cancer markers using a nanopore thin film based optofluidic chip. Biosens Bioelectron 2016; 77:491-8. [PMID: 26457734 PMCID: PMC4673024 DOI: 10.1016/j.bios.2015.10.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/21/2015] [Accepted: 10/02/2015] [Indexed: 01/01/2023]
Abstract
Currently used cancer marker for prostate adenocarcinoma (PC), serum prostate-specific antigen (PSA), greatly overestimates PC population. Patients with high PSA levels have to undergo unnecessary but physically painful and expensive procedure such as prostate biopsies repeatedly. The reliability of PC test can be greatly increased by finding a protein that is secreted selectively by malignant, but not normal, prostate cells. A recently discovered novel protein, referred as neuroendocrine marker (NEM), is secreted only by malignant prostate cells and released in blood circulation. Although NEM seems to be significantly more reliable based on the data obtained from a limited cohort, currently available NEM ELISA is not suitable for undertaking a large study. Therefore, the goal of the present study was to develop an alternative, label-free assay system that can reliably measure NEM and PSA in patient samples. Herein an optofluidic chip that can reliably detect PSA as well as NEM in patient samples has been developed. The optofluidic chip, which consists of arrayed nanopore-based sensors fabricated from anodic aluminum oxide (AAO) thin film, offers improved sensitivity upon the optimization of the concentration of the detector antibodies immobilized on the sensor surface. The results demonstrate that the chip is reliable, extremely sensitive and requires just 1 µl of patient serum (or even less) to measure PSA and NEM even in a non-cancer individual. Compared with the traditional ELISA for PSA, the nanopore-based sensor assay is 50-100 fold more sensitive, and offers many advantages such as elimination of labeled antigen, need for sophisticated equipment and highly trained individuals. These advantages, along with the low cost, should make the technology suitable for point-of-care application to screen elderly male populations for PC and to monitor the progress of patients undergoing PC treatment.
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Affiliation(s)
| | | | | | - Long Que
- Iowa State University, United States.
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23
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Yoo H, Lee DJ, Cho DG, Park J, Nam KW, Cho YT, Park JY, Chen X, Hong S. Magnetically-refreshable receptor platform structures for reusable nano-biosensor chips. NANOTECHNOLOGY 2016; 27:045502. [PMID: 26654983 DOI: 10.1088/0957-4484/27/4/045502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We developed a magnetically-refreshable receptor platform structure which can be integrated with quite versatile nano-biosensor structures to build reusable nano-biosensor chips. This structure allows one to easily remove used receptor molecules from a biosensor surface and reuse the biosensor for repeated sensing operations. Using this structure, we demonstrated reusable immunofluorescence biosensors. Significantly, since our method allows one to place receptor molecules very close to a nano-biosensor surface, it can be utilized to build reusable carbon nanotube transistor-based biosensors which require receptor molecules within a Debye length from the sensor surface. Furthermore, we also show that a single sensor chip can be utilized to detect two different target molecules simply by replacing receptor molecules using our method. Since this method does not rely on any chemical reaction to refresh sensor chips, it can be utilized for versatile biosensor structures and virtually-general receptor molecular species.
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Affiliation(s)
- Haneul Yoo
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747, Korea
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24
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Che X, He Y, Yin H, Que L. A molecular beacon biosensor based on the nanostructured aluminum oxide surface. Biosens Bioelectron 2015; 72:255-60. [DOI: 10.1016/j.bios.2015.05.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 05/06/2015] [Accepted: 05/08/2015] [Indexed: 01/03/2023]
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25
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Biscay J, González García MB, García AC. Determination of Total PSA Using Magnetic Beads and a Re-usable Screen Printed Carbon Electrode Array. ELECTROANAL 2015. [DOI: 10.1002/elan.201500351] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Sun SH, Lee MJ, Lee YH, Lee W, Song X, Chen CY. Immunoassays for the cancer biomarker CA125 based on a large-birefringence nematic liquid-crystal mixture. BIOMEDICAL OPTICS EXPRESS 2015; 6:245-56. [PMID: 25657889 PMCID: PMC4317129 DOI: 10.1364/boe.6.000245] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 12/07/2014] [Accepted: 12/18/2014] [Indexed: 05/05/2023]
Abstract
The use of fluorescence is ubiquitously found in the detection of immunoreaction; though with good sensitivity, this technique requires labeling as well as other time-consuming steps to perform the measurement. An alternative approach involving liquid crystals (LCs) was proposed, based on the fact that an immunocomplex can disturb the orientation of LCs, leading to an optical texture different from the case when only antigen or antibody exists. This method is label-free, easy to manipulate and low-cost. However, its sensitivity was low for practical usage. In this study, we adopted a high-birefringence liquid crystal (LC) to enhance the sensitivity for the immunodetection. Experiments were performed, targeting at the cancer biomarker CA125. We showed that the larger birefringence (Δn = 0.33 at 20 °C) amplifies the detected signal and, in turn, dramatically improves the detection limit. To avoid signal loss from conventional rinsing steps in immunodetection, CA125 antigen and antibody were reacted before immobilized on substrates. We studied the specific binding events and obtained a detection limit as low as 1 ng/ml. The valid temperature ranges were compared by using the typical single-compound LC 5CB and the high-birefringence LC mixture. We further investigated time dependency of the optical textures and affirmed the capability of LC-based immunodetection in distinguishing between specific and nonspecific antibodies.
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Affiliation(s)
- Shih-Hung Sun
- Institute of Imaging and Biomedical Photonics, College of Photonics, National Chiao Tung University, Guiren Dist., Tainan 71150,
Taiwan
| | - Mon-Juan Lee
- Department of Bioscience Technology, Chang Jung Christian University, Guiren Dist., Tainan 71101,
Taiwan
- (M.-J. Lee)
| | - Yun-Han Lee
- Institute of Imaging and Biomedical Photonics, College of Photonics, National Chiao Tung University, Guiren Dist., Tainan 71150,
Taiwan
| | - Wei Lee
- Institute of Imaging and Biomedical Photonics, College of Photonics, National Chiao Tung University, Guiren Dist., Tainan 71150,
Taiwan
- (W. Lee)
| | - Xiaolong Song
- Jiangsu Hecheng Display Technology Co., Ltd., Nanjing 210014,
China
| | - Chao-Yuan Chen
- Jiangsu Hecheng Display Technology Co., Ltd., Nanjing 210014,
China
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27
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Li X, Yin H, Que L. A nanostructured aluminum oxide-based microfluidic device for enhancing immunoassay’s fluorescence and detection sensitivity. Biomed Microdevices 2014; 16:771-7. [DOI: 10.1007/s10544-014-9881-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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28
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Sanders M, Lin Y, Wei J, Bono T, Lindquist RG. An enhanced LSPR fiber-optic nanoprobe for ultrasensitive detection of protein biomarkers. Biosens Bioelectron 2014; 61:95-101. [PMID: 24858997 DOI: 10.1016/j.bios.2014.05.009] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 04/15/2014] [Accepted: 05/03/2014] [Indexed: 01/01/2023]
Abstract
A miniaturized, localized surface plasmon resonance (LSPR)-coupled fiber-optic (FO) nanoprobe is reported as a biosensor that is capable of label-free, sensitive detection of a cancer protein biomarker, free prostate specific antigen (f-PSA). The biosensor is based on the LSPR at the reusable dielectric-metallic hybrid interface with a robust, gold nano-disk array at the fiber end facet that is directly fabricated using EBL and metal lift-off process. The f-PSA has been detected with a mouse anti-human PSA monoclonal antibody (mAb) as a specific receptor linked with a self-assembled monolayer at the LSPR-FO facet surfaces. Experimental investigation and data analysis found near field refractive index (RI) sensitivity at ~226 nm/RIU with current LSPR-FO nanoprobe, and demonstrated the lowest limit of detection (LOD) at 100 fg/mL (~3 fM) of f-PSA in PBS solutions. The control experimentation using 5mg/mL bovine serum albumin in PBS and nonspecific surface test shows the excellent specificity and selectivity in the detection of f-PSA in PBS. These results present important progress towards a miniaturized, multifunctional fiber-optic technology that integrates informational communication and sensing function for developing a high performance, label-free, point-of-care (POC) device.
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Affiliation(s)
- Mollye Sanders
- Department of Biological Science, University of Alabama at Huntsville, Huntsville, AL 35899, USA
| | - Yongbin Lin
- Center for Applied Optics, University of Alabama at Huntsville, Huntsville, AL 35899, USA.
| | - Jianjun Wei
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, NC 27401, USA.
| | - Taylor Bono
- Department of Biological Science, University of Alabama at Huntsville, Huntsville, AL 35899, USA
| | - Robert G Lindquist
- Center for Applied Optics, University of Alabama at Huntsville, Huntsville, AL 35899, USA; Department of Electrical and Computer Engineering, University of Alabama at Huntsville, Huntsville, AL 35899, USA
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29
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Suaifan GARY, Shehadeh M, Al-Ijel H, Ng A, Zourob M. Recent progress in prostate-specific antigen and HIV proteases detection. Expert Rev Mol Diagn 2014; 13:707-18. [PMID: 24063398 DOI: 10.1586/14737159.2013.835576] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Proteases mediate a wide variety of biological events and have a critical role in the development of many diseases. Protease detection methods can be hindered by the limitation of assay safety, sensitivity, specificity, time constraints and ease of on-site analysis. Notably, the implementation of various detection methods on biosensing platforms translates them into practical biosensing applications. Currently, the detection of prostate cancer and AIDS at the earliest occasion is one of the major research obstacles. Therefore, recent advances focus on the development of portable detection systems toward point-of-care testing. These detection systems should be highly sensitive and specific for the detection of their prognostic biomarkers, such as the prostate-specific antigen and HIV load assay for prostate cancer and AIDS, respectively. These methods will also facilitate decision-making on a treatment regimen.
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Affiliation(s)
- Ghadeer A R Y Suaifan
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, The University of Jordan, Amman 11942, Jordan
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30
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Simultaneous and combined detection of multiple tumor biomarkers for prostate cancer in human serum by suspension array technology. Biosens Bioelectron 2013; 47:92-8. [DOI: 10.1016/j.bios.2013.02.052] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 02/17/2013] [Accepted: 02/18/2013] [Indexed: 12/13/2022]
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31
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Tamma VA, Cui Y, Zhou J, Park W. Nanorod orientation dependence of tunable Fano resonance in plasmonic nanorod heptamers. NANOSCALE 2013; 5:1592-1602. [PMID: 23329115 DOI: 10.1039/c2nr33292b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We present orientation dependence and tuning of Fano resonances in plasmonic gold nanorod heptamer nanostructures. The heptamer structures were formed by surrounding a central circular nanoparticle by six satellite nanorods in a hexagonal arrangement and the heptamer structures were then embedded in a thin flexible membrane. The Fano resonance was found to depend on the orientation of the nanorods within the heptamer and for a given orientation, the Fano resonance was dynamically tuned and its symmetry lowered by application of uniaxial mechanical stress. The expected spectral features were obtained by simulations and verified by experiments. The spectral features of the heptamer structures were further characterized by using detailed group theoretical analysis. We show that both sub-structural and mechanical tuning could be employed to engineer the Fano resonances in complex plasmonic molecules.
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Affiliation(s)
- Venkata Ananth Tamma
- Department of Electrical, Computer and Energy Engineering, University of Colorado Boulder, Boulder, Colorado 80309-0425, USA
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32
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Li X, He Y, Que L. Fluorescence detection and imaging of biomolecules using the micropatterned nanostructured aluminum oxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:2439-2445. [PMID: 23339753 DOI: 10.1021/la304833u] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Micropatterns of the nanostructured aluminum oxide (NAO) with sizes from 5 to 200 μm have been successfully fabricated on the indium tin oxide (ITO) glass substrate by simply combining a lift-off process and a one-step anodization process for the first time. The detection of fluorescent dyes and biomolecules tagged with fluorescent dyes on the NAO has been investigated and demonstrated successfully. Experiments reveal that the micropatterned NAO substrates can increase the fluorescence signals up to 2 or 3 orders of magnitude compared to the glass substrate, suggesting a possibility to significantly reduce the consumption of the biosamples for fluorescence-based sensing, imaging, and analysis. The stability of the NAO substrates for fluorescence enhancement has also been evaluated by monitoring the fluorescence signals after the fluorophores applied on the substrates for a period of time and reusing the same NAO substrates many times. It was found that this type of substrate has very good stability. Because the micropatterned NAO can be easily integrated with microsensors or microfluidic chips, a simple and inexpensive fluorescence enhancement platform can be developed for a variety of applications, such as microarray technology and single-cell imaging, facilitating the construction of the on-chip fluorescence-based micro- or nanosystems.
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Affiliation(s)
- Xiang Li
- Institute for Micromanufacturing, Louisiana Tech University, Ruston, Louisiana 71272, United States
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SadAbadi H, Badilescu S, Packirisamy M, Wüthrich R. Integration of gold nanoparticles in PDMS microfluidics for lab-on-a-chip plasmonic biosensing of growth hormones. Biosens Bioelectron 2013; 44:77-84. [PMID: 23395726 DOI: 10.1016/j.bios.2013.01.016] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 12/05/2012] [Accepted: 01/02/2013] [Indexed: 01/01/2023]
Abstract
Gold nanoparticles were synthesized in a poly(dimethylsiloxane) (PDMS) microfluidic chip by using an in-situ method, on the basis of reductive properties of the cross-linking agent of PDMS. The proposed integrated device was further used as a sensitive and low-cost LSPR-based biosensor for the detection of polypeptides. Synthesis of nanoparticles in the microfluidic environment resulted in improvement of size distribution with only 8% variation, compared with the macro-environment that yields about 67% variation in size. The chemical kinetics of the in-situ reaction in the microfluidic environment was studied in detail and compared with the reaction carried out at the macro-scale. The effect of temperature and gold precursor concentration on the kinetics of the reaction was investigated and the apparent activation energy was estimated to be Ea*=30 kJ/mol. The sensitivity test revealed that the proposed sensor has a high sensitivity of 74 nm/RIU to the surrounding medium. The sensing of bovine growth hormone also known as bovine somatotropin (bST) shows that the proposed biosensor can reach a detection limit of as low as 3.7 ng/ml (185 pM). The results demonstrate the successful integration of microfluidics and nanoparticles which provides a potential alternative for protein detection in clinical diagnostics.
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Affiliation(s)
- Hamid SadAbadi
- Optical-Bio Microsystems Laboratory, Department of Mechanical Engineering, Concordia University, Montreal, Quebec, Canada
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