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Negahdary M, Behjati-Ardakani M, Heli H, Sattarahmady N. A Cardiac Troponin T Biosensor Based on Aptamer Self-assembling on Gold. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2020; 8:271-283. [PMID: 32587837 PMCID: PMC7305465 DOI: 10.22088/ijmcm.bums.8.4.271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
In this study, a sensitive and accurate aptasensor was designed for early detection of myocardial infarction through the determination of troponin T (TnT). The successful immobilization of a specific aptamer sequence on the surface of gold that had a high affinity toward TnT was accomplished. TnT was electrochemically quantified. The results indicated that the aptasensor detected TnT in a range of 0.05-5 ng mL, and with a detection limit of 0.01 ng/mL. The performance of the aptasensor was investigated by analyzing 99 human serum samples. Both diagnostic specificity and sensitivity of the aptasensor were found to be 95%. The use of the designed aptamer-based biosensor could be an essential achievement in health policy, preventing deaths caused by myocardial infarction, and reducing patients with heart failure. The extensive use of this aptamer-based biosensor can also reduce costs, enhance speed, and improve accuracy in the diagnosis of TnT as an important myocardial infarction biomarker.
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Affiliation(s)
- Masoud Negahdary
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | | | - Hossein Heli
- Nanomedicine and Nanobiology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - 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
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Mintah Churcher NK, Upasham S, Rice P, Bhadsavle S, Prasad S. Development of a flexible, sweat-based neuropeptide Y detection platform. RSC Adv 2020; 10:23173-23186. [PMID: 35520310 PMCID: PMC9054693 DOI: 10.1039/d0ra03729j] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/05/2020] [Indexed: 12/14/2022] Open
Abstract
Neuropeptide Y (NPY) biomarker levels have a close association with the diagnosis of Major Depression Disorder (MDD) and anxiety disorders. Quantifying NPY in correlation to self-reported symptoms will be an important measure to ensure a relatively uniform diagnosis and help with disease prognosis of these disorders. The work presented is a novel, passive eccrine sweat based, electrochemical detection platform for quantification of NPY biomarker levels. The paper offers a comparison between non-porous and porous sensor platforms using various electrochemical detection techniques. This work uses a novel strategy towards designing an optimal nanobioelectronic interface to measure NPY. The portability aspect of this detection platform is discussed by the demonstration a novel, portable EmStat Pico based electronic platform. The detection limit of the sensor is 10 pg mL−1 and its range is 20–500 pg mL−1. The NPY detection platform is envisioned to be a wearable point-of need monitoring system for management of chronic anxiety disorders and MDD. Novel wearable NPY biomarker tracking system, envisioned to be a chronic anxiety and MDD management platform via self-monitoring.![]()
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Affiliation(s)
| | - Sayali Upasham
- Department of Bioengineering
- University of Texas at Dallas
- Richardson
- USA
| | - Paul Rice
- Department of Bioengineering
- University of Texas at Dallas
- Richardson
- USA
| | - Serena Bhadsavle
- Department of Bioengineering
- University of Texas at Dallas
- Richardson
- USA
| | - Shalini Prasad
- Department of Bioengineering
- University of Texas at Dallas
- Richardson
- USA
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Lee T, Ahn JH, Choi J, Lee Y, Kim JM, Park C, Jang H, Kim TH, Lee MH. Development of the Troponin Detection System Based on the Nanostructure. MICROMACHINES 2019; 10:mi10030203. [PMID: 30909423 PMCID: PMC6470505 DOI: 10.3390/mi10030203] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/17/2019] [Accepted: 03/17/2019] [Indexed: 12/23/2022]
Abstract
During the last 30 years, the World Health Organization (WHO) reported a gradual increase in the number of patients with cardiovascular disease (CVD), not only in developed but also in developing countries. In particular, acute myocardial infarction (AMI) is one of the severe CVDs because of the high death rate, damage to the body, and various complications. During these harmful effects, rapid diagnosis of AMI is key for saving patients with CVD in an emergency. The prompt diagnosis and proper treatment of patients with AMI are important to increase the survival rate of these patients. To treat patients with AMI quickly, detection of a CVD biomarker at an ultra-low concentration is essential. Cardiac troponins (cTNs), cardiac myoglobin (cMB), and creatine kinase MB are typical biomarkers for AMI detection. An increase in the levels of those biomarkers in blood implies damage to cardiomyocytes and thus is related to AMI progression. In particular, cTNs are regarded as a gold standard biomarker for AMI diagnosis. The conventional TN detection system for detection of AMI requires long measurement time and is labor-intensive and tedious. Therefore, the demand for sensitive and selective TN detection techniques is increasing at present. To meet this demand, several approaches and methods have been applied to develop a TN detection system based on a nanostructure. In the present review, the authors reviewed recent advances in TN biosensors with a focus on four detection systems: (1) An electrochemical (EC) TN nanobiosensor, (2) field effect transistor (FET)-based TN nanobiosensor, (3) surface plasmon resonance (SPR)-based TN nanobiosensor and (4) surface enhanced Raman spectroscopy (SERS)-based TN nanobiosensor.
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Affiliation(s)
- Taek Lee
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul 01899, Korea.
| | - Jae-Hyuk Ahn
- Department of Electronic Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul 01899, Korea.
| | - Jinha Choi
- Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-ro (Sinsu-dong), Mapo-gu, Seoul 04107, Korea.
| | - Yeonju Lee
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul 01899, Korea.
| | - Jin-Myung Kim
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul 01899, Korea.
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul 01899, Korea.
| | - Hongje Jang
- Department of Chemistry, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul 01899, Korea.
| | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
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Bhide A, Muthukumar S, Saini A, Prasad S. Simultaneous lancet-free monitoring of alcohol and glucose from low-volumes of perspired human sweat. Sci Rep 2018; 8:6507. [PMID: 29695724 PMCID: PMC5916883 DOI: 10.1038/s41598-018-24543-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 03/26/2018] [Indexed: 01/03/2023] Open
Abstract
A lancet-free, label-free biosensor for simultaneous detection of sweat glucose and alcohol was demonstrated using zinc oxide thin films integrated into a nanoporous flexible electrode system. Sensing was achieved from perspired human sweat at low volumes (1-3 μL), comparable to ambient conditions without external stimulation. Zinc oxide thin film electrodes were surface functionalized with alcohol oxidase enzyme and with glucose oxidase enzyme towards developing an affinity biosensor specific to the physiological relevant range of alcohol comprising of 0-2 drinks (0-50 mg/dl) and physiologically relevant range of glucose ranging from hypo- to hyper-glycaemia (50-130 mg/dl) in perspired human sweat. Sensing was achieved by measuring impedance changes associated with alcohol and glucose binding onto the sensor interface using electrochemical impedance spectroscopy with a dynamic range from 0.01-200 mg/dl and a limit of detection of 0.01 mg/dl for alcohol in human sweat. Sensor calibration in synthetic sweat containing interferents (25-200 mg/dl) and comparison using regression and Bland-Altman analysis of sweat sensor performance was done with BACtrack®. Combinatorial detection of glucose and ethanol in perspired human sweat and comparison of sweat sensor performance with Accu-Chek® blood glucose monitoring system that we expect would be relevant for pre-diabetics and diabetics for monitoring their glucose levels and alcohol consumption.
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Affiliation(s)
- Ashlesha Bhide
- Department of Bioengineering, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX, 75080, USA
| | | | - Amreek Saini
- Department of Bioengineering, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX, 75080, USA
| | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX, 75080, USA.
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Guo L, Yang Z, Zhi S, Feng Z, Lei C, Zhou Y. Sensitive detection of cardiac troponin T based on superparamagnetic bead-labels using a flexible micro-fluxgate sensor. RSC Adv 2017. [DOI: 10.1039/c7ra10355g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In this study, we describe an innovative micro-fluxgate immunosensor based on superparamagnetic Dynabeads for the detection of cardiac troponin T (cTnT), an important biomarker for cardiovascular diseases.
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Affiliation(s)
- Lei Guo
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education
- Research Institute of Micro/Nano Science and Technology
- Shanghai JiaoTong University
- Shanghai 200240
- China
| | - Zhen Yang
- School of Physics and Electronic Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Shaotao Zhi
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education
- Research Institute of Micro/Nano Science and Technology
- Shanghai JiaoTong University
- Shanghai 200240
- China
| | - Zhu Feng
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education
- Research Institute of Micro/Nano Science and Technology
- Shanghai JiaoTong University
- Shanghai 200240
- China
| | - Chong Lei
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education
- Research Institute of Micro/Nano Science and Technology
- Shanghai JiaoTong University
- Shanghai 200240
- China
| | - Yong Zhou
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education
- Research Institute of Micro/Nano Science and Technology
- Shanghai JiaoTong University
- Shanghai 200240
- China
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Shanmugam NR, Muthukumar S, Prasad S. Ultrasensitive and low-volume point-of-care diagnostics on flexible strips - a study with cardiac troponin biomarkers. Sci Rep 2016; 6:33423. [PMID: 27634488 PMCID: PMC5025736 DOI: 10.1038/srep33423] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 08/22/2016] [Indexed: 12/22/2022] Open
Abstract
We demonstrate a flexible, mechanically stable, and disposable electrochemical sensor platform for monitoring cardiac troponins through the detection and quantification of cardiac Troponin-T (cTnT). We designed and fabricated nanostructured zinc oxide (ZnO) sensing electrodes on flexible porous polyimide substrates. We demonstrate ultrasensitive detection is capable at very low sample volumes due to the confinement phenomenon of target species within the ZnO nanostructures leading to enhancement of biomolecular binding on the sensor electrode surface. The performance of the ZnO nanostructured sensor electrode was evaluated against gold and nanotextured ZnO electrodes. The electrochemical sensor functions on affinity based immunoassay principles whereby monoclonal antibodies for cTnT were immobilized on the sensor electrodes using thiol based chemistry. Detection of cTnT in phosphate buffered saline (PBS) and human serum (HS) buffers was achieved at low sample volumes of 20 μL using non-faradaic electrochemical impedance spectroscopy (EIS). Limit of detection (LOD) of 1E-4 ng/mL (i.e. 1 pg/mL) at 7% CV (coefficient of variation) for cTnT in HS was demonstrated on nanostructured ZnO electrodes. The mechanical integrity of the flexible biosensor platform was demonstrated with cyclic bending tests. The sensor performed within 12% CV after 100 bending cycles demonstrating the robustness of the nanostructured ZnO electrochemical sensor platform.
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Affiliation(s)
| | | | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
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