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Yamamoto A, Sakamaki Y, Abuillan W, Konovalov O, Ueno Y, Tanaka M. Structural and Mechanical Characterization of DNA-Tethered Membranes on Graphene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:16530-16537. [PMID: 39046847 DOI: 10.1021/acs.langmuir.4c01957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Lipid membranes that are separated from the surface of graphene by DNA tethers were prepared by surface functionalization with pyrene coupled to single-stranded DNA (ssDNA), followed by self-assembly of the mixture of ssDNA-functionalized phospholipid and the matrix phospholipids. The formation of uniform membranes was confirmed by fluorescence microscopy, and the structures of the systems before and after hybridization in the direction perpendicular to the global plane of the membranes were investigated using high-energy X-ray reflectivity. The thickness values of the DNA spacers (15 and 37 bp) calculated from the best-fit results were less than the expected thicknesses of the double-stranded DNA (dsDNA) chains taking the upright conformation, indicating that the DNA spacers are tilted with respect to the direction normal to the surface. The Young's moduli of the DNA-tethered membranes obtained by AFM nanoindentation showed higher values than the membranes with no DNA tethers, which suggests that the DNA layer resists against the compression, lifting up the membrane. Intriguingly, the presence of DNA tethers caused no increase in the yield depth. The smaller thickness values as well as the unchanged yield depth suggest that the dsDNA chains can tilt and rotate, which can be attributed to the flexible pyrene-DNA junction.
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Affiliation(s)
- Akihisa Yamamoto
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto 606-8501, Japan
| | - Yusuke Sakamaki
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120 Heidelberg, Germany
| | - Wasim Abuillan
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120 Heidelberg, Germany
| | - Oleg Konovalov
- European Synchrotron Radiation Facility (ESRF), 38043 Grenoble, France
| | - Yuko Ueno
- NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
| | - Motomu Tanaka
- Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, Kyoto 606-8501, Japan
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120 Heidelberg, Germany
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2
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Lee SE, Choi Y, Oh Y, Lee D, Kim J, Hong S. Black Phosphorus-Based Reusable Biosensor Platforms for the Ultrasensitive Detection of Cortisol in Saliva. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11305-11314. [PMID: 38406866 DOI: 10.1021/acsami.3c18605] [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: 02/27/2024]
Abstract
A black phosphorus (BP)-based reusable biosensor platform is developed for the repeated and real-time detection of cortisol using antibody-conjugated magnetic particle (MP) structures as a refreshable receptor. Here, we took advantage of the low-noise characteristics of a mechanically exfoliated BP-based field-effect transistor (FET) and hybridized it with anti-cortisol antibody-functionalized MPs to build a highly sensitive cortisol sensor. This strategy allowed us to detect cortisol down to 1 aM in real time and discriminate cortisol from other hormones. In this case, we could easily remove MPs with used antibodies from the surface of a BP-FET and reuse the chip for up to eight repeated sensing operations. Moreover, since our platform could be fabricated using conventional photolithography techniques and the sensor can be reused multiple times, one should be able to significantly reduce operation costs for practical applications. Furthermore, this method could be utilized to detect different hormones with high sensitivity and selectivity in complex environments such as artificial saliva solutions. In this respect, our reusable BP-FET biosensing platform can be a powerful tool for versatile applications such as clinical diagnosis and basic biological analysis by conjugating various antibodies.
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Affiliation(s)
- Sang-Eun Lee
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoonji Choi
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Yuhyeon Oh
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
| | - Dongryul Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Jihyun Kim
- Department of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seunghun Hong
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Republic of Korea
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Karuppaiah G, Lee MH, Bhansali S, Manickam P. Electrochemical sensors for cortisol detection: Principles, designs, fabrication, and characterisation. Biosens Bioelectron 2023; 239:115600. [PMID: 37611448 DOI: 10.1016/j.bios.2023.115600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/09/2023] [Accepted: 08/12/2023] [Indexed: 08/25/2023]
Abstract
Psychological stress is a major factor contributing to health discrepancies among individuals. Sustained exposure to stress triggers signalling pathways in the brain, which leading to the release of stress hormones in the body. Cortisol, a steroid hormone, is a significant biomarker for stress management due to its responsibility in the body's reply to stress. The release of cortisol in bloodstream prepares the body for a "fight or flight" response by increasing heart rate, blood pressure, metabolism, and suppressing the immune system. Detecting cortisol in biological samples is crucial for understanding its role in stress and personalized healthcare. Traditional techniques for cortisol detection have limitations, prompting researchers to explore alternative strategies. Electrochemical sensing has emerged as a reliable method for point-of-care (POC) cortisol detection. This review focuses on the progress made in electrochemical sensors for cortisol detection, covering their design, principle, and electroanalytical methodologies. The analytical performance of these sensors is also analysed and summarized. Despite significant advancements, the development of electrochemical cortisol sensors faces challenges such as biofouling, sample preparation, sensitivity, flexibility, stability, and recognition layer performance. Therefore, the need to develop more sensitive electrodes and materials is emphasized. Finally, we discussed the potential strategies for electrode design and provides examples of sensing approaches. Moreover, the encounters of translating research into real world applications are addressed.
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Affiliation(s)
- Gopi Karuppaiah
- Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630 003, Tamil Nadu, India; School of Integrative Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Shekhar Bhansali
- Department of Electrical and Computer Engineering, Florida International University, Miami, FL, 33174, USA.
| | - Pandiaraj Manickam
- Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630 003, Tamil Nadu, India; Academy of Scientific and Innovative Research, Ghaziabad, 201 002, Uttar Pradesh, India.
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4
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Smajdor J, Paczosa-Bator B, Piech R. Advances on Hormones and Steroids Determination: A Review of Voltammetric Methods since 2000. MEMBRANES 2022; 12:1225. [PMID: 36557132 PMCID: PMC9782681 DOI: 10.3390/membranes12121225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
This article presents advances in the electrochemical determination of hormones and steroids since 2000. A wide spectrum of techniques and working electrodes have been involved in the reported measurements in order to obtain the lowest possible limits of detection. The voltammetric and polarographic techniques, due to their sensitivity and easiness, could be used as alternatives to other, more complicated, analytical assays. Still, growing interest in designing a new construction of the working electrodes enables us to prepare new measurement procedures and obtain lower limits of detection. A brief description of the measured compounds has been presented, along with a comparison of the obtained results.
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An JE, Kim KH, Park SJ, Seo SE, Kim J, Ha S, Bae J, Kwon OS. Wearable Cortisol Aptasensor for Simple and Rapid Real-Time Monitoring. ACS Sens 2022; 7:99-108. [PMID: 34995062 DOI: 10.1021/acssensors.1c01734] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The necessity of managing stress levels is becoming increasingly apparent as the world suffers from different kinds of stresses including the extent of pandemic, the corona virus disease 2019 (COVID-19). Cortisol, a clinically confirmed stress hormone related to depression and anxiety, affects individuals mentally and physically. However, current cortisol monitoring methods require expert personnel, large and complex machines, and long time for data analysis. Here, we present a flexible and wearable cortisol aptasensor for simple and rapid cortisol real-time monitoring. The sensing channel was produced by electrospinning conducting polyacrylonitrile (PAN) nanofibers (NFs) and subsequent vapor deposition of carboxylated poly(3,4-ethylenedioxythiophene) (PEDOT). The conjugation of the cortisol aptamer on the PEDOT-PAN NFs provided the critical sensing mechanism for the target molecule. The sensing test was performed with a liquid-ion gated field-effect transistor (FET) on a polyester (polyethylene terepthalate). The sensor performance showed a detection limit of 10 pM (<5 s) and high selectivity in the presence of interference materials at 100 times higher concentrations. The practical usage and real-time monitoring of the cortisol aptasensor with a liquid-ion gated FET system was demonstrated by successful transfer to the swab and the skin. In addition, the real-time monitoring of actual sweat by applying the cortisol aptasensor was also successful since the aptasensor was able to detect cortisol approximately 1 nM from actual sweat in a few minutes. This wearable biosensor platform supports the possibility of further application and on-site monitoring for changes of other numerous biomarkers.
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Affiliation(s)
- Jai Eun An
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Kyung Ho Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Seon Joo Park
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Sung Eun Seo
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Jinyeong Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Siyoung Ha
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Joonwon Bae
- Department of Applied Chemistry, Dongduk Women’s University, Seoul 02748, Republic of Korea
| | - Oh Seok Kwon
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
- Nanobiotechnology and Bioinformatics (Major), University of Science & Technology (UST), 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
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Ultrasensitive Stress Biomarker Detection Using Polypyrrole Nanotube Coupled to a Field-Effect Transistor. MICROMACHINES 2020; 11:mi11040439. [PMID: 32331254 PMCID: PMC7231345 DOI: 10.3390/mi11040439] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/13/2020] [Accepted: 04/21/2020] [Indexed: 12/18/2022]
Abstract
Stress biomarkers such as hormones and neurotransmitters in bodily fluids can indicate an individual’s physical and mental state, as well as influence their quality of life and health. Thus, sensitive and rapid detection of stress biomarkers (e.g., cortisol) is important for management of various diseases with harmful symptoms, including post-traumatic stress disorder and depression. Here, we describe rapid and sensitive cortisol detection based on a conducting polymer (CP) nanotube (NT) field-effect transistor (FET) platform. The synthesized polypyrrole (PPy) NT was functionalized with the cortisol antibody immunoglobulin G (IgG) for the sensitive and specific detection of cortisol hormone. The anti-cortisol IgG was covalently attached to a basal plane of PPy NT through an amide bond between the carboxyl group of PPy NT and the amino group of anti-cortisol IgG. The resulting field-effect transistor-type biosensor was utilized to evaluate various cortisol concentrations. Cortisol was sensitively measured to a detection limit of 2.7 × 10−10 M (100 pg/mL), with a dynamic range of 2.7 × 10−10 to 10−7 M; it exhibited rapid responses (<5 s). We believe that our approach can serve as an alternative to time-consuming and labor-intensive health questionnaires; it can also be used for diagnosis of underlying stress-related disorders.
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7
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Electrochemical immunoassay for the detection of stress biomarkers. Heliyon 2020; 6:e03558. [PMID: 32211542 PMCID: PMC7082534 DOI: 10.1016/j.heliyon.2020.e03558] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/09/2020] [Accepted: 03/04/2020] [Indexed: 01/11/2023] Open
Abstract
A rapid electrochemical immunoassay method was developed to detect and measure stress biomarkers (cortisol and cortisone) in two biological samples (Zebrafish whole-body and artificial saliva). This methodology utilizes an immunoassay approach taking advantage of the lock and key mechanism that is related to the antibody-antigen interaction depending on the reliable immobilization of the antibody labelled with ferrocene tags (Ab-Fc) on a modified tin-doped indium oxide (ITO) electrode using electrochemical instrumentation to build a POC platform. The limit of detection (LOD) obtained for this biosensor was 1.03 pg ml−1 for cortisol and 0.68 pg ml−1 for cortisone, respectively. The correlation coefficient was 0.9852 and 0.9841 for cortisol and cortisone, respectively with a linear concentration from (0-50 ng ml−1) which covers the standard levels of stress hormones in both selected biological samples. The incubation time was investigated and 30 min was found to be the optimum incubation time. This time would be acceptable for the POC system as total process time can be determined within 35 min.
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Liu X, Hsu SPC, Liu WC, Wang YM, Liu X, Lo CS, Lin YC, Nabilla SC, Li Z, Hong Y, Lin C, Li Y, Zhao G, Chung RJ. Salivary Electrochemical Cortisol Biosensor Based on Tin Disulfide Nanoflakes. NANOSCALE RESEARCH LETTERS 2019; 14:189. [PMID: 31165287 PMCID: PMC6548787 DOI: 10.1186/s11671-019-3012-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 05/13/2019] [Indexed: 05/06/2023]
Abstract
Cortisol, a steroid hormone, is secreted by the hypothalamic-pituitary-adrenal system. It is a well-known biomarker of psychological stress and is hence known as the "stress hormone." If cortisol overexpression is prolonged and repeated, dysfunction in the regulation of cortisol eventually occurs. Therefore, a rapid point-of-care assay to detect cortisol is needed. Salivary cortisol electrochemical analysis is a non-invasive method that is potentially useful in enabling rapid measurement of cortisol levels. In this study, multilayer films containing two-dimensional tin disulfide nanoflakes, cortisol antibody (C-Mab), and bovine serum albumin (BSA) were prepared on glassy carbon electrodes (GCE) as BSA/C-Mab/SnS2/GCE, and characterized using electrochemical impedance spectroscopy and cyclic voltammetry. Electrochemical responses of the biosensor as a function of cortisol concentrations were determined using cyclic voltammetry and differential pulse voltammetry. This cortisol biosensor exhibited a detection range from 100 pM to 100 μM, a detection limit of 100 pM, and a sensitivity of 0.0103 mA/Mcm2 (R2 = 0.9979). Finally, cortisol concentrations in authentic saliva samples obtained using the developed electrochemical system correlated well with results obtained using enzyme-linked immunosorbent assays. This biosensor was successfully prepared and used for the electrochemical detection of salivary cortisol over physiological ranges, based on the specificity of antibody-antigen interactions.
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Affiliation(s)
- Xinke Liu
- College of Materials Science and Engineering, Shenzhen University, No. 3688, Nanhai Ave, Shenzhen, 518060 China
| | - Sanford P. C. Hsu
- Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, 11217 Taiwan
- School of Medicine, National Yang Ming University, Taipei, 11221 Taiwan
| | - Wai-Ching Liu
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd, Taipei, 10608 Taiwan
| | - Yi-Min Wang
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd, Taipei, 10608 Taiwan
| | - Xinrui Liu
- Department of Neurosurgical Oncology, First Hospital, Jilin University, Changchun, 130021 China
| | - Ching-Shu Lo
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd, Taipei, 10608 Taiwan
| | - Yu-Chien Lin
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd, Taipei, 10608 Taiwan
| | - Sasza Chyntara Nabilla
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd, Taipei, 10608 Taiwan
| | - Zhiwen Li
- College of Materials Science and Engineering, Shenzhen University, No. 3688, Nanhai Ave, Shenzhen, 518060 China
| | - Yuehua Hong
- College of Materials Science and Engineering, Shenzhen University, No. 3688, Nanhai Ave, Shenzhen, 518060 China
| | - Chingpo Lin
- Department of Neurosurgical Oncology, First Hospital, Jilin University, Changchun, 130021 China
| | - Yunqian Li
- Department of Neurosurgical Oncology, First Hospital, Jilin University, Changchun, 130021 China
| | - Gang Zhao
- Department of Neurosurgical Oncology, First Hospital, Jilin University, Changchun, 130021 China
| | - Ren-Jei Chung
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd, Taipei, 10608 Taiwan
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Khan MS, Dighe K, Wang Z, Srivastava I, Schwartz-Duval AS, Misra SK, Pan D. Electrochemical-digital immunosensor with enhanced sensitivity for detecting human salivary glucocorticoid hormone. Analyst 2019; 144:1448-1457. [PMID: 30608068 DOI: 10.1039/c8an02085j] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this work, an ultra-sensitive electrochemical-digital sensor chip is devised for potential use as a digital stress analyzer for point-of-care testing (POCT) and preventive on-site recording of the hormone 'cortisol', a glucocorticoid class of steroid hormone present in the human saliva. The sensor was interfaced and re-configured with a high precision impedance converter system (AD5933) and used for electrochemical impedance spectroscopy (EIS) to evaluate the cortisol levels in seven saliva samples. To obtain enhanced biological (cortisol) recognition and achieve a lower limit of detection 0.87 ± 0.12 pg mL-1 (2.4 ± 0.38 pmol mL-1) with a wide range from 1 pg mL-1 to 10 ng mL-1 (2.75 pmol mL-1 to 27.58 pmol mL-1; R2 = 0.9831), bovine serum albumin (1% BSA) was utilized as an effective sensitivity enhancer in addition to optimizing the other two parameters: (i) anti-cortisol antibody (anti-CAb) covalently attached to micro-Au electrodes and (ii) saliva sample incubation time on the sensor chip. The results obtained in this work were corroborated with the gold standard ELISA test with an accuracy of 96.3% and other previously reported biosensors. We envisage that the conceivable standpoint of this study can be a practice towards new development in cortisol biosensing, which will be pertinent to POCT targeted for in vitro psychobiological study on patient cortisol in saliva, and finally an implantable sensor chip in the future.
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Affiliation(s)
- Muhammad S Khan
- Bioengineering Department, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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10
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Quantitative Analysis of Homogeneous Electrocatalytic Reactions at IDA Electrodes: The Example of [Ni(PPh2NBn2)2]2+. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Murashima Y, Karim MR, Furue R, Matsui T, Takehira H, Wakata K, Toda K, Ohtani R, Nakamura M, Hayami S. Reduced graphene oxide–transition metal hybrids as p-type semiconductors for acetaldehyde sensing. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00058d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduced graphene oxide–transition metal hybrids were accomplished to deposit a p-type semiconductor films on conductive glass for acetaldehyde sensing.
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Affiliation(s)
- Yusuke Murashima
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Mohammad Razaul Karim
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
- Department of Chemistry
| | - Ryo Furue
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Takeshi Matsui
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Hiroshi Takehira
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Kosuke Wakata
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Kei Toda
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Ryo Ohtani
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Masaaki Nakamura
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
| | - Shinya Hayami
- Graduate School of Science and Technology
- Kumamoto University
- Kumamoto
- Japan
- Institute of Pulsed Power Science (IPPS)
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Tran TB, Nguyen PD, Baek C, Min J. Electrical dual-sensing method for real-time quantitative monitoring of cell-secreted MMP-9 and cellular morphology during migration process. Biosens Bioelectron 2015; 77:631-7. [PMID: 26485177 DOI: 10.1016/j.bios.2015.10.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/01/2015] [Accepted: 10/09/2015] [Indexed: 11/17/2022]
Abstract
MMP-9 (92 kDa gelatinease), which is member of matrix metalloproteinases (MMPs) family, plays a crucial role in the breakdown of extracellular matrix (ECM) by degrading the major components of ECM that lead to tumor cell invasion and metastasis through the basement membrane. Our study presents the on-chip dual-sensing device for rapid detection of cell-secreted MMP-9 and corresponding cell morphology changes in real-time domain. The device consists of 2 sensing platforms (both are interdigitated array microelectrodes - IDAMs) within 1 common fluidic chamber: one detects the cell morphology responses via Electric Cell-substrate Impedance Sensing (ECIS) technique, meanwhile the other records the cleavage effect between cell-secreted MMP-9 and the surface immobilized peptide via the capacitance-based sensing method. Thanks to the selectivity of designed peptide, this approach allows the rapid and specific detection of MMP-9. In comparison with gold standard ELISA assay, the detection time was significantly reduced from over 4h to within 30 min with the wide detection range from 10 pM to 10nM. Finally, this study provides the novel model for MMP-9 protease direct detection from living cell and new insights in multi-purpose detection of cancer associated enzyme and cell migration behavior.
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Affiliation(s)
- Trong Binh Tran
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Phuong Diem Nguyen
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Changyoon Baek
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Junhong Min
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 156-756, Republic of Korea.
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13
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Recent progress in applications of graphene oxide for gas sensing: A review. Anal Chim Acta 2015; 878:43-53. [DOI: 10.1016/j.aca.2015.02.002] [Citation(s) in RCA: 297] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/25/2015] [Accepted: 02/02/2015] [Indexed: 12/11/2022]
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14
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Yang D, Li T, Xu M, Gao F, Yang J, Yang Z, Le W. Graphene oxide promotes the differentiation of mouse embryonic stem cells to dopamine neurons. Nanomedicine (Lond) 2014; 9:2445-55. [DOI: 10.2217/nnm.13.197] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Aim: Nanoparticles are easier to pass through cell membranes, and they are considered to be the ideal biocompatible and mechanically stable platforms for supporting stem cell growth and differentiation. The aim of this study is to determine the effects of carbon nanotubes (CNTs), graphene oxide (GO) and graphene (GR) on the dopamine neural differentiation of mouse embryonic stem cells (ESCs). Materials & methods: GO was prepared according to a modified Hummers method. GR was synthesized by reduction of GO via L-ascorbic acid as a reductant in an aqueous solution at room temperature. CNTs were fabricated by chemical vapor deposition method. ESCs were differentiated by a stromal cell-derived inducing activity (SDIA) method after 10 days coculture with PA6 cells. The dopamine neural differentiation of the ESCs-GFP was examined by immunocytochemistry and real-time PCR. Results: We found that only GO could effectively promote dopamine neuron differentiation after induction of SDIA and further enhance dopamine neuron-related gene expression compared with cells treated with no nanoparticle control, and the other two nanoparticles (CNTs and GR). Conclusion: These findings suggest that GO is a promising nanomaterial-based technical platform to effectively enhance dopamine neural differentiation of ESCs, which can be potentially applied for cell transplantation therapy. Original submitted 22 April 2013; Revised submitted 13 October 2013
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Affiliation(s)
- Dehua Yang
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
- National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Ting Li
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Minghan Xu
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Feng Gao
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Juan Yang
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Zhi Yang
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Weidong Le
- Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
- Center for Translational Neurology, 1st Hospital, Dalian Medical University, Dalian 116011, China
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On-chip graphene oxide aptasensor for multiple protein detection. Anal Chim Acta 2014; 866:1-9. [PMID: 25732687 DOI: 10.1016/j.aca.2014.10.047] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/24/2014] [Accepted: 10/29/2014] [Indexed: 01/31/2023]
Abstract
The versatility of an on-chip graphene oxide (GO) aptasensor was successfully confirmed by the detection of three different proteins, namely, thrombin (TB), prostate specific antigen (PSA), and hemagglutinin (HA), simply by changing the aptamers but with the sensor composition remaining the same. The results indicate that both DNA and RNA aptamers immobilized on the GO surface are sufficiently active to realize an on-chip aptasensor. Molecular selectivity and concentration dependence were investigated in relation to TB and PSA detection by using a dual, triple, and quintuple microchannel configuration. The multiple target detection of TB and PSA on a single chip was also demonstrated by using a 2×3 linear-array GO aptasensor. This work enables us to apply this sensor to the development of a multicomponent analysis system for a wide variety of targets by choosing appropriate aptamers.
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16
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Singh A, Kaushik A, Kumar R, Nair M, Bhansali S. Electrochemical sensing of cortisol: a recent update. Appl Biochem Biotechnol 2014; 174:1115-26. [PMID: 24723204 DOI: 10.1007/s12010-014-0894-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 03/25/2014] [Indexed: 12/11/2022]
Abstract
Psychological stress caused by everyday lifestyle contributes to health disparities experienced by individuals. It affects many biomarkers, but cortisol - "a steroid hormone" - is known as a potential biomarker for psychological stress detection. Abnormal levels of cortisol are indicative of conditions such as Cushing's syndrome Addison's disease, adrenal insufficiencies and more recently post-traumatic stress disorder (PTSD). Chromatographic techniques, which are traditionally used to detect cortisol, are a complex system requiring multistep extraction/purification. This limits its application for point-of-care (POC) detection of cortisol. However, electrochemical immunosensing of cortisol is a recent advancement towards POC application. This review highlights simple, low-cost, and label-free electrochemical immunosensing platforms which have been developed recently for sensitive and selective detection of cortisol in bio-fluids. Electrochemical detection is utilized for the detection of cortisol using Anti-Cortisol antibodies (Anti-Cab) covalently immobilized on nanostructures, such as self-assembled monolayer (SAM) and polymer composite, for POC integration of sensors. The observed information can be used as a prototype to understand behavioral changes in humans such as farmers and firefighters. Keeping the future directions and challenges in mind, the focus of the BioMEMS and Microsystems Research Group at Florida International University is on development of POC devices for immunosensing, integration of these devices with microfluidics, cross validation with existing technologies, and analysis of real sample.
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Affiliation(s)
- Aparajita Singh
- BioMEMS and Microsystems Laboratory, Department of Electrical and Computer Engineering, Florida International University, Miami, FL, 33174, USA
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OYAMA M, CHEN X, CHEN X. Recent Nanoarchitectures in Metal Nanoparticle-Graphene Nanocomposite Modified Electrodes for Electroanalysis. ANAL SCI 2014; 30:529-38. [DOI: 10.2116/analsci.30.529] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Munetaka OYAMA
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| | - Xiaomei CHEN
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
- College of Biological Engineering, Jimei University
| | - Xi CHEN
- State Key Laboratory of Marine Environmental Science and Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Xiamen University
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18
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Perween M, Parmar DB, Bhadu GR, Srivastava DN. Polymer–graphite composite: a versatile use and throw plastic chip electrode. Analyst 2014; 139:5919-26. [DOI: 10.1039/c4an01405g] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report an efficient plastic chip electrode (PCE) fabricated from a composite of graphite and poly(methyl methacrylate) by a simple solution casting method and promoted as an economically inexpensive, multipurpose disposable electrode for various applications.
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Affiliation(s)
- Mosarrat Perween
- Analytical Discipline and Centralized Instrument Facility
- CSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar-364002, India
- Academy of Scientific & Innovative Research
- CSIR-CSMCRI
| | - Dilip B. Parmar
- Analytical Discipline and Centralized Instrument Facility
- CSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar-364002, India
| | - Gopala Ram Bhadu
- Analytical Discipline and Centralized Instrument Facility
- CSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar-364002, India
| | - Divesh N. Srivastava
- Analytical Discipline and Centralized Instrument Facility
- CSIR-Central Salt & Marine Chemicals Research Institute
- Bhavnagar-364002, India
- Academy of Scientific & Innovative Research
- CSIR-CSMCRI
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Tomčík P. Microelectrode arrays with overlapped diffusion layers as electroanalytical detectors: theory and basic applications. SENSORS (BASEL, SWITZERLAND) 2013; 13:13659-84. [PMID: 24152927 PMCID: PMC3859085 DOI: 10.3390/s131013659] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 08/14/2013] [Accepted: 08/28/2013] [Indexed: 12/16/2022]
Abstract
This contribution contains a survey of basic literature dealing with arrays of microelectrodes with overlapping diffusion layers as prospective tools in contemporary electrochemistry. Photolithographic thin layer technology allows the fabrication of sensors of micrometric dimensions separated with a very small gap. This fact allows the diffusion layers of single microelectrodes to overlap as members of the array. Various basic types of microelectrode arrays with interacting diffusion layers are described and their analytical abilities are accented. Theoretical approaches to diffusion layer overlapping and the consequences of close constitution effects such as collection efficiency and redox cycling are discussed. Examples of basis applications in electroanalytical chemistry such as amperometric detectors in HPLC and substitutional stripping voltammetry are also given.
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Affiliation(s)
- Peter Tomčík
- Department of Chemistry & Physics, Faculty of Education, Catholic University in Ružomberok, Hrabovská cesta 1, SK-034 01, Ružomberok, Slovak Republic.
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