1
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Schorr HC, Schultz ZD. Digital surface enhanced Raman spectroscopy for quantifiable single molecule detection in flow. Analyst 2024; 149:3711-3715. [PMID: 38895849 PMCID: PMC11229883 DOI: 10.1039/d4an00801d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Accepted: 06/12/2024] [Indexed: 06/21/2024]
Abstract
Surface enhanced Raman scattering (SERS) provides a label free method of analyzing molecules from diverse and complex signals, potentially with single molecule sensitivity. The chemical specificity inherent in the SERS spectrum can identify molecules; however signal variability arising from the diversity of plasmonic environments can limit quantification, particularly at low concentrations. Here we show that digitizing, or counting SERS events, can decrease the limit of detection in flowing solutions enabling quantification of single molecules. By using multivariate curve resolution and establishing a score threshold, each individual spectrum can be classified as containing an event or not. This binary "yes/no" can then be quantified, and a linear region can be established. This method was shown to lower the limit of detection to the lowest physical limit, and lowered the limit of detection by an order of magnitude from the traditional, intensity based LOD calculations.
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Affiliation(s)
- Hannah C Schorr
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
| | - Zachary D Schultz
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
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2
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Chen H, Zhou S, Chen J, Zhou J, Fan K, Pan Y, Ping J. An integrated plant glucose monitoring system based on microneedle-enabled electrochemical sensor. Biosens Bioelectron 2024; 248:115964. [PMID: 38160635 DOI: 10.1016/j.bios.2023.115964] [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: 10/12/2023] [Revised: 12/10/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
Real-time monitoring of glucose concentration changes in plants and access to plant physiological information timely are of great significance to the development of precision agriculture. Here, we innovatively present an electrochemical sensing device that combines microneedle sensors and 3D printing technology to achieve real-time monitoring of glucose in plants in a minimally invasive manner. The device consists of two components: the inner part features a highly efficient sensing interface based on platinum wire (MPt-Au-Nafion-GOx-Pu), while the outer part consists of polymer microneedles formed by 3D printing. Additionally, the polymer hollow microneedle features a slender tip diameter of only 300 μm, minimizing plant damage during the detection procedure. The device shows good detection performance, with a limit of detection (LOD) of 33.3 μM and a detection sensitivity of 17 nA/μM·cm2. It can detect glucose concentrations in the range of 100 μM to 100 mM, providing a unique solution for timely agronomic management of crops tool. By performing 12 h real-time monitoring and salt stress treat on tomato and aloe vera, the results verified the feasibility of integrated device applied to real-time glucose detection in plants.
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Affiliation(s)
- Han Chen
- Laboratory of Agricultural Information Intelligent Sensing, School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; Hangzhou Academy of Agricultural Sciences, Hangzhou, 310024, PR China
| | - Shenghan Zhou
- Laboratory of Agricultural Information Intelligent Sensing, School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311200, PR China
| | - Junbiao Chen
- College of Information Engineering, Hangzhou Dianzi University, Hangzhou, 310018, PR China
| | - Jin Zhou
- Laboratory of Agricultural Information Intelligent Sensing, School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
| | - Kai Fan
- School of Automation, Hangzhou Dianzi University, Hangzhou, 310018, PR China
| | - Yuxiang Pan
- Laboratory of Agricultural Information Intelligent Sensing, School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311200, PR China
| | - Jianfeng Ping
- Laboratory of Agricultural Information Intelligent Sensing, School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; Innovation Platform of Micro/Nano Technology for Biosensing, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311200, PR China.
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3
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Mondal HS, Hossain MZ, Birbilis N. A selective LSPR biosensor for molecular-level glycated albumin detection. Heliyon 2023; 9:e22795. [PMID: 38125431 PMCID: PMC10731091 DOI: 10.1016/j.heliyon.2023.e22795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/05/2023] [Accepted: 11/20/2023] [Indexed: 12/23/2023] Open
Abstract
A biosensor specifically engineered to detect glycated albumin (GA), a critical biomarker for diabetes monitoring, is presented. Unlike conventional GA monitoring methods, the biosensor herein uniquely employs localised surface plasmon resonance (LSPR) for signal transduction, leveraging a novel fabrication process where gold nanoparticles are deposited on a quartz substrate using flame spray pyrolysis. This enables the biosensor to provide mean glucose levels over a three-week period, correlating with the glycation status of diabetes patients. The sensor's DNA aptamer conjugation selectively binds GA, inducing a plasmonic wavelength shift; resulting in a detection limit of 0.1 μM, well within the human GA range of 20-240 μM. Selectivity experiments with diverse molecules and an exploration of sensor reusability were carried out with positive results. The novelty of the biosensor presented includes specificity, sensitivity and practical applicability; which is promising for enhanced diabetes diagnosis using a rapid and inexpensive process.
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Affiliation(s)
- Himadri Shekhar Mondal
- School of Engineering, ANU College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2601, Australia
| | - Md Zakir Hossain
- School of Engineering, ANU College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2601, Australia
- School of Electrical Engineering, Computing and Mathematical Sciences, Curtin University, Bentley, WA 6102, Australia
| | - Nick Birbilis
- School of Engineering, ANU College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2601, Australia
- Faculty of Science, Engineering and Built Environment, Deakin University, Waurn Ponds, VIC 3261, Australia
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4
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Schorr HC, Schultz ZD. Chemical conjugation to differentiate monosaccharides by Raman and surface enhanced Raman spectroscopy. Analyst 2023; 148:2035-2044. [PMID: 36974935 PMCID: PMC10167912 DOI: 10.1039/d2an01762h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Sugars play important roles in numerous biological processes, from providing energy to modifying proteins to alter their function. Glycosylation, the attachment of a sugar residue to a protein, is the most common post translational modification. Identifying the glycans on a protein is a useful tool both for pharmaceutical development as well as probing the proteome and glycome further. Sugars, however, are difficult analytes to probe due to their isomeric nature. In this work, Raman spectroscopy and surface enhanced Raman spectroscopy (SERS) are used to identify different monosaccharide species based on the vibrational modes of these isomeric analytes. The weak scattering of the sugars was overcome through conjugation with phenylboronic acid to provide a larger Raman scattering cross section and induce slight changes in the observed spectra associated with the structure of the monosaccharides. Spontaneous Raman, SERS in flow, and static SERS detection were performed in order to discriminate between arabinose, fructose, galactose, glucose, mannose, and ribose, as well as provide a method for identification and quantification for these sugar conjugates.
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Affiliation(s)
- Hannah C Schorr
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
| | - Zachary D Schultz
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
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5
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González-Viveros N, Castro-Ramos J, Gómez-Gil P, Cerecedo-Núñez HH, Gutiérrez-Delgado F, Torres-Rasgado E, Pérez-Fuentes R, Flores-Guerrero JL. Quantification of glycated hemoglobin and glucose in vivo using Raman spectroscopy and artificial neural networks. Lasers Med Sci 2022; 37:3537-3549. [PMID: 36063232 PMCID: PMC9708775 DOI: 10.1007/s10103-022-03633-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/14/2022] [Indexed: 01/17/2023]
Abstract
Undiagnosed type 2 diabetes (T2D) remains a major public health concern. The global estimation of undiagnosed diabetes is about 46%, being this situation more critical in developing countries. Therefore, we proposed a non-invasive method to quantify glycated hemoglobin (HbA1c) and glucose in vivo. We developed a technique based on Raman spectroscopy, RReliefF as a feature selection method, and regression based on feed-forward artificial neural networks (FFNN). The spectra were obtained from the forearm, wrist, and index finger of 46 individuals. The use of FFNN allowed us to achieve an error in the predictive model of 0.69% for HbA1c and 30.12 mg/dL for glucose. Patients were classified according to HbA1c values into three categories: healthy, prediabetes, and T2D. The proposed method obtained a specificity and sensitivity of 87.50% and 80.77%, respectively. This work demonstrates the benefit of using artificial neural networks and feature selection techniques to enhance Raman spectra processing to determine glycated hemoglobin and glucose in patients with undiagnosed T2D.
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Affiliation(s)
- Naara González-Viveros
- Optics Coordination, National Institute of Astrophysics, Optics and Electronics (INAOE), 72840, Puebla, Mexico
| | - Jorge Castro-Ramos
- Optics Coordination, National Institute of Astrophysics, Optics and Electronics (INAOE), 72840, Puebla, Mexico
| | - Pilar Gómez-Gil
- Computer Science Coordination, National Institute of Astrophysics, Optics and Electronics (INAOE), 72840, Puebla, Mexico
| | | | | | - Enrique Torres-Rasgado
- Faculty of Medicine, Meritorious Autonomous University of Puebla (BUAP), 72589, Puebla, Mexico
| | - Ricardo Pérez-Fuentes
- Department of Chronic Disease Physiopathology, East Center of Biomedical Research, Mexican Social Security Institute (CIBIOR), 74360, Puebla, México
| | - Jose L Flores-Guerrero
- MRC Unit for Lifelong Health and Ageing, Institute of Cardiovascular Science, University College London, London, WC1E 7HB, UK.
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Li J, Li R, Xu Y, Xue X, Chen X, Chui HC. The Wavelength-Dependent SERS Template Based on a Nanopillar Array. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7446. [PMID: 36363038 PMCID: PMC9657544 DOI: 10.3390/ma15217446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/02/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) can be regarded as a powerful tool for probing chemical molecules by effectively enhancing Raman signals. However, the enhancement factors depend on the SERS template, the probed molecular structures, and the excitation laser wavelength. Herein, we proposed a simple and easily fabricated nanostructured template for SERS and analyzed the wavelength-dependent factors. Three types of golden nanopillar arrays on silicon wafers were designed and manufactured. The SERS signals of the Rhodamine 6G (R6G) molecules were extracted. Three laser sources, a blue 17 mW 458 nm diode laser, a green 20 mW 532 nm laser, and a red 6 mW 633 nm laser, were employed as the excitation laser sources. The 458 nm laser was located far from the resonate spectrum of R6G. The optical intensity distributions for the different SERS templates excited by three laser beams were also simulated. The enhancement factors (EFs) of R6G on the three nanostructured templates were measured and compared. The photoluminescence spectrum of the nanostructured templates and SERS signals of R6G were also measured. In addition, the experimental results concerned optical simulations. The analysis tool that was used was a convolution profile of multiple Lorentzian line shapes with a Gaussian profile. It is helpful to understand the SERS signals when the excitation laser wavelength is located out of the resonance region of molecules. It can also provide a new design approach to fabricate an SERS Template with a nanopillar array for different excitation wavelengths.
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Affiliation(s)
- Jiayi Li
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
| | - Rui Li
- College of Physics, Dalian University of Technology, Dalian 116024, China
| | - Ying Xu
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
| | - Xiaojun Xue
- PipeChina Group, Beijing Pipe Co., Ltd., Beijing 100020, China
| | - Xiaoming Chen
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
| | - Hsiang-Chen Chui
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China
- Department of Photonics, National Cheng Kung University, Tainan 70101, Taiwan
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7
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Raman-based detection of ciprofloxacin and its degradation in pharmaceutical formulations. Talanta 2022; 250:123719. [DOI: 10.1016/j.talanta.2022.123719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 11/18/2022]
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8
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Sun X. Glucose detection through surface-enhanced Raman spectroscopy: A review. Anal Chim Acta 2022; 1206:339226. [PMID: 35473867 DOI: 10.1016/j.aca.2021.339226] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 10/20/2021] [Accepted: 10/27/2021] [Indexed: 12/13/2022]
Abstract
Glucose detection is of vital importance to diabetes diagnosis and treatment. Optical approaches in glucose sensing have received much attention in recent years due to the relatively low cost, portable, and mini-invasive or non-invasive potentials. Surface enhanced Raman spectroscopy (SERS) endows the benefits of extremely high sensitivity because of enhanced signals and specificity due to the fingerprint of molecules of interest. However, the direct detection of glucose through SERS was challenging because of poor adsorption of glucose on bare metals and low cross section of glucose. In order to address these challenges, several approaches were proposed and utilized for glucose detection through SERS. This review article mainly focuses on the development of surface enhanced Raman scattering based glucose sensors in recent 10 years. The sensing mechanisms, rational design and sensing properties to glucose are reviewed. Two strategies are summarized as intrinsic sensing and extrinsic sensing. Four general categories for glucose sensing through SERS are discussed including SERS active platform, partition layer functionalized surface, boronic acid based sensors, and enzymatic reaction based biosensors. Finally, the challenges and outlook for SERS based glucose sensors are also presented.
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Affiliation(s)
- Xiangcheng Sun
- Department of Chemical Engineering, Rochester Institute of Technology, Rochester, NY, 14623, United States.
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9
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Kozik A, Pavlova M, Petrov I, Bychkov V, Kim L, Dorozhko E, Cheng C, Rodriguez RD, Sheremet E. A review of surface-enhanced Raman spectroscopy in pathological processes. Anal Chim Acta 2021; 1187:338978. [PMID: 34753586 DOI: 10.1016/j.aca.2021.338978] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 12/17/2022]
Abstract
With the continuous growth of the human population and new challenges in the quality of life, it is more important than ever to diagnose diseases and pathologies with high accuracy, sensitivity and in different scenarios from medical implants to the operation room. Although conventional methods of diagnosis revolutionized healthcare, alternative analytical methods are making their way out of academic labs into clinics. In this regard, surface-enhanced Raman spectroscopy (SERS) developed immensely with its capability to achieve single-molecule sensitivity and high-specificity in the last two decades, and now it is well on its way to join the arsenal of physicians. This review discusses how SERS is becoming an essential tool for the clinical investigation of pathologies including inflammation, infections, necrosis/apoptosis, hypoxia, and tumors. We critically discuss the strategies reported so far in nanoparticle assembly, functionalization, non-metallic substrates, colloidal solutions and how these techniques improve SERS characteristics during pathology diagnoses like sensitivity, selectivity, and detection limit. Moreover, it is crucial to introduce the most recent developments and future perspectives of SERS as a biomedical analytical method. We finally discuss the challenges that remain as bottlenecks for a routine SERS implementation in the medical room from in vitro to in vivo applications. The review showcases the adaptability and versatility of SERS to resolve pathological processes by covering various experimental and analytical methods and the specific spectral features and analysis results achieved by these methods.
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Affiliation(s)
- Alexey Kozik
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia; Siberian Medical State University, Moskovskiy Trakt, 2, Tomsk, 634050, Russia
| | - Marina Pavlova
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia; Siberian Medical State University, Moskovskiy Trakt, 2, Tomsk, 634050, Russia
| | - Ilia Petrov
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia
| | - Vyacheslav Bychkov
- Tomsk National Research Medical Center of the Russian Academy of Sciences, Cancer Research Institute, 5 Kooperativny Street, Tomsk, 634009, Russia
| | - Larissa Kim
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia
| | - Elena Dorozhko
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia
| | - Chong Cheng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Raul D Rodriguez
- Tomsk Polytechnic University, Lenin Ave, 30, Tomsk, 634050, Russia.
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10
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Kotturi D, Paterson S, McShane M. Comparison of SERS pH probe responses after microencapsulation within hydrogel matrices. JOURNAL OF BIOMEDICAL OPTICS 2021; 26:JBO-210153R. [PMID: 34519190 PMCID: PMC8435981 DOI: 10.1117/1.jbo.26.9.097001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
SIGNIFICANCE Personalized medicine requires the tracking of an individual's metabolite levels over time to detect anomalies and evaluate the body's response to medications. Implanted sensors offer effective means to continuously monitor specific metabolite levels, provided they are accurate, stable over long time periods, and do no harm. AIM Four types of hydrogel embedded with pH-sensitive sensors were evaluated for their accuracy, sensitivity, reversibility, longevity, dynamic response, and consistency in static versus dynamic conditions and long-term storage. APPROACH Raman spectroscopy was first used to calibrate the intensity of pH-sensitive peaks of the Raman-active hydrogel sensors in a static pH environment. The dynamic response was then assessed for hydrogels exposed to changing pH conditions within a flow cell. Finally, the static pH response after 5 months of storage was determined. RESULTS All four types of hydrogels allowed the surface-enhanced Raman spectroscopy (SERS) sensors to respond to the pH level of the local environment without introducing interfering signals, resulting in consistent calibration curves. When the pH level changed, the probes in the gels were slow to reach steady-state, requiring several hours, and response times were found to vary among hydrogels. Only one type, poly(2-hydroxyethyl methacrylate) (pHEMA), lasted five months without significant degradation of dynamic range. CONCLUSIONS While all hydrogels appear to be viable candidates as biocompatible hosts for the SERS sensing chemistry, pHEMA was found to be most functionally stable over the long interval tested. Poly(ethylene glycol) hydrogels exhibit the most rapid response to changing pH. Since these two gel types are covalently cross-linked and do not generally degrade, they both offer advantages over sodium alginate for use as implants.
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Affiliation(s)
- Dayle Kotturi
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
| | - Sureyya Paterson
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
| | - Mike McShane
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
- Texas A&M University, Department of Materials Science and Engineering, College Station, Texas, United States
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11
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Golparvar A, Boukhayma A, Loayza T, Caizzone A, Enz C, Carrara S. Very Selective Detection of Low Physiopathological Glucose Levels by Spontaneous Raman Spectroscopy with Univariate Data Analysis. BIONANOSCIENCE 2021. [DOI: 10.1007/s12668-021-00867-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractAfter decades of research on non-invasive glucose monitoring, invasive devices based on finger blood sampling are still the predominant reference for diabetic patients for accurately measuring blood glucose levels. Meanwhile, research continues improving point-of-care technology toward the development of painless and more accurate devices. Raman spectroscopy is well-known as a potentially valuable and painless approach for measuring glucose levels. However, previous Raman studies deal with glucose concentrations that are still order of magnitudes away with respect to human tissues’ physiological concentrations, or they propose enhancement methodologies either invasive or much complex to assure sufficient sensitivity in the physiological range. Instead, this study proposes an alternative non-enhanced Raman spectroscopy approach sensitive to glucose concentrations from 1 to 5 mmol/l, which correspond to the lowest physiopathological glucose level in human blood. Our findings suggest a very selective detection of glucose with respect to other typical metabolites, usually interfering with Raman spectroscopy’s glucose detection. We validate the proposed univariate sensing methodology on glucose solutions mixed with lactate and urea, the two most common molecules found in human serum with concentrations similar to glucose and similar features in the Raman spectra. Our findings clearly illustrate that reliable detection of glucose by Raman spectroscopy is feasible by exploiting the shifted peak at 1125 ± 10 cm–1 within physiopathological ranges.
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12
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Glucose Detection of 4-Mercaptophenylboronic Acid-Immobilized Gold-Silver Core-Shell Assembled Silica Nanostructure by Surface Enhanced Raman Scattering. NANOMATERIALS 2021; 11:nano11040948. [PMID: 33917868 PMCID: PMC8068217 DOI: 10.3390/nano11040948] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/02/2021] [Accepted: 04/04/2021] [Indexed: 11/25/2022]
Abstract
The importance of glucose in many biological processes continues to garner increasing research interest in the design and development of efficient biotechnology for the sensitive and selective monitoring of glucose. Here we report on a surface-enhanced Raman scattering (SERS) detection of 4-mercaptophenyl boronic acid (4-MPBA)-immobilized gold-silver core-shell assembled silica nanostructure (SiO2@Au@Ag@4-MPBA) for quantitative, selective detection of glucose in physiologically relevant concentration. This work confirmed that 4-MPBA converted to 4-mercaptophenol (4-MPhOH) in the presence of H2O2. In addition, a calibration curve for H2O2 detection of 0.3 µg/mL was successfully detected in the range of 1.0 to 1000 µg/mL. Moreover, the SiO2@Au@Ag@4-MPBA for glucose detection was developed in the presence of glucose oxidase (GOx) at the optimized condition of 100 µg/mL GOx with 1-h incubation time using 20 µg/mL SiO2@Au@Ag@4-MPBA and measuring Raman signal at 67 µg/mL SiO2@Au@Ag. At the optimized condition, the calibration curve in the range of 0.5 to 8.0 mM was successfully developed with an LOD of 0.15 mM. Based on those strategies, the SERS detection of glucose can be achieved in the physiologically relevant concentration range and opened a great promise to develop a SERS-based biosensor for a variety of biomedicine applications.
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Pan Z, Yang J, Song W, Luo P, Zou J, Peng J, Huang B, Luo Z. Au@Ag nanoparticle sensor for sensitive and rapid detection of glucose. NEW J CHEM 2021. [DOI: 10.1039/d0nj04489j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A sensitive SERS sensor based on Au@Ag nanoparticles for rapid glucose detection (5 min) via tuning of the plasmonic properties.
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Affiliation(s)
- Zhiwen Pan
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
| | - Junqi Yang
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
| | - Weijia Song
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
| | - Puqiang Luo
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
| | - Junyan Zou
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
| | - Jie Peng
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
| | - Bo Huang
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
| | - Zhi Luo
- Department of Electronic Engineering
- Jinan University
- Guangzhou 510632
- People's Republic of China
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14
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Ultrasound-modulated optical glucose sensing using a 1645 nm laser. Sci Rep 2020; 10:13361. [PMID: 32770091 PMCID: PMC7414225 DOI: 10.1038/s41598-020-70305-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 07/27/2020] [Indexed: 11/18/2022] Open
Abstract
Regular and frequent blood glucose monitoring is vital in managing diabetes treatment plans and preventing severe complications. Because current invasive techniques impede patient compliance and are not infection-free, many noninvasive methods have been proposed. Among them, optical methods have drawn much attention for their rich optical contrast, but their resolution is degraded in deep tissue. Here, we present an ultrasound-modulated optical sensing (UOS) technique to noninvasively monitor glucose that uses an infrared laser (1645 nm) and a single-element focused ultrasound transducer. Focused ultrasound waves can acoustically localize diffused photons in scattering media, and thus optical contrast can be represented with much enhanced spatial resolution. To maximize the signal-to-noise ratio, we compared the modulation depths of UOS signals in both continuous and burst ultrasound transmission modes. Finally, UOS measurements of various glucose concentrations are presented and compared with those acquired in phantoms with a conventional diffuse optical sensing method. The UOS measurements in a 20 mm thick tissue-mimicking phantom show 26.6% accuracy in terms of mean absolute relative difference (MARD), which indicates the great potential of the proposed technique as a noninvasive glucose sensor.
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15
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Jia S, Bandyopadhyay A, Kumar H, Zhang J, Wang W, Zhai T, Shenoy VB, Lou J. Biomolecular sensing by surface-enhanced Raman scattering of monolayer Janus transition metal dichalcogenide. NANOSCALE 2020; 12:10723-10729. [PMID: 32386399 DOI: 10.1039/d0nr00300j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, we demonstrate that monolayer Janus MoSSe is an effective and universal platform for enhancing Raman signal and detecting biomolecules for the first time. The out-of-plane dipoles in monolayer Janus MoSSe redistribute charges of adsorbed biomolecules, polarize biomolecules and enhance their Raman vibrational intensity. The estimated Raman enhancement factor is higher than 105, which is comparable with the highest reported enhancement factor for 2D substrates. The C-C stretching Raman peak around 1360 cm-1 is used to indicate the glucose concentration, and its peak-integrated intensity increases linearly with the glucose concentration in the range of 1-10 mM. DFT calculations also confirm that charge redistribution in glucose induced by dipole interactions can enhance Raman intensity significantly when glucose molecules are adsorbed onto monolayer Janus MoSSe.
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Affiliation(s)
- Shuai Jia
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
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Flores-Guerrero JL, Muñoz-Morales A, Narea-Jimenez F, Perez-Fuentes R, Torres-Rasgado E, Ruiz-Vivanco G, Gonzalez-Viveros N, Castro-Ramos J. Novel Assessment of Urinary Albumin Excretion in Type 2 Diabetes Patients by Raman Spectroscopy. Diagnostics (Basel) 2020; 10:diagnostics10030141. [PMID: 32138353 PMCID: PMC7151048 DOI: 10.3390/diagnostics10030141] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 11/25/2019] [Accepted: 12/24/2019] [Indexed: 11/16/2022] Open
Abstract
Urinary albumin excretion remains the key biomarker to detect renal complications in type 2 diabetes. As diabetes epidemy increases, particularly in low-income countries, efficient and low-cost methods to measure urinary albumin are needed. In this pilot study, we evaluated the performance of Raman spectroscopy in the assessment of urinary albumin in patients with type 2 diabetes. The spectral Raman analysis of albumin was performed using artificial urine, at five concentrations of albumin and 24 h collection urine samples from ten patients with Type 2 Diabetes. The spectra were obtained after removing the background fluorescence and fitting Gaussian curves to spectral regions containing features of such metabolites. In the samples from patients with type 2 diabetes, we identified the presence of albumin in the peaks of the spectrum located at 663.07, 993.43, 1021.43, 1235.28, 1429.91 and 1633.91 cm−1. In artificial urine, there was an increase in the intensity of the Raman signal at 1450 cm−1, which corresponds to the increment of the concentrations of albumin. The highest concentration of albumin was located at 1630 cm−1. The capability of Raman spectroscopy for detection of small concentrations of urinary albumin suggests the feasibility of this method for the screening of type 2 diabetes renal complications.
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Affiliation(s)
- Jose L. Flores-Guerrero
- Department of Internal Medicine, Division of Nephrology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
- Correspondence: ; Tel.:+ 31-50-36-10137
| | - Aaron Muñoz-Morales
- Department of Physics, Faculty of Experimental Sciences and Technology, Center of Medical and Biotechnology Research, University of Carabobo, Valencia 2005, Venezuela;
| | - Freddy Narea-Jimenez
- Optics coordination, Biomedical Optics Group, National Institute of Astrophysics, Optics and Electronics, INAOE, Puebla 72840, Mexico; (F.N.-J.); (N.G.-V.); (J.C.-R.)
| | - Ricardo Perez-Fuentes
- Department of Chronic Disease Physiopathology, East Center of Biomedical Research, Mexican Social Security Institute, CIBIOR, Puebla 74360, Mexico; (R.P.-F.); (G.R.-V.)
| | - Enrique Torres-Rasgado
- Faculty of Medicine, Meritorious Autonomous University of Puebla, BUAP, Puebla 72589, Mexico;
| | - Guadalupe Ruiz-Vivanco
- Department of Chronic Disease Physiopathology, East Center of Biomedical Research, Mexican Social Security Institute, CIBIOR, Puebla 74360, Mexico; (R.P.-F.); (G.R.-V.)
| | - Naara Gonzalez-Viveros
- Optics coordination, Biomedical Optics Group, National Institute of Astrophysics, Optics and Electronics, INAOE, Puebla 72840, Mexico; (F.N.-J.); (N.G.-V.); (J.C.-R.)
| | - Jorge Castro-Ramos
- Optics coordination, Biomedical Optics Group, National Institute of Astrophysics, Optics and Electronics, INAOE, Puebla 72840, Mexico; (F.N.-J.); (N.G.-V.); (J.C.-R.)
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Abstract
This is a review of relevant Raman spectroscopy (RS) techniques and their use in structural biology, biophysics, cells, and tissues imaging towards development of various medical diagnostic tools, drug design, and other medical applications. Classical and contemporary structural studies of different water-soluble and membrane proteins, DNA, RNA, and their interactions and behavior in different systems were analyzed in terms of applicability of RS techniques and their complementarity to other corresponding methods. We show that RS is a powerful method that links the fundamental structural biology and its medical applications in cancer, cardiovascular, neurodegenerative, atherosclerotic, and other diseases. In particular, the key roles of RS in modern technologies of structure-based drug design are the detection and imaging of membrane protein microcrystals with the help of coherent anti-Stokes Raman scattering (CARS), which would help to further the development of protein structural crystallography and would result in a number of novel high-resolution structures of membrane proteins—drug targets; and, structural studies of photoactive membrane proteins (rhodopsins, photoreceptors, etc.) for the development of new optogenetic tools. Physical background and biomedical applications of spontaneous, stimulated, resonant, and surface- and tip-enhanced RS are also discussed. All of these techniques have been extensively developed during recent several decades. A number of interesting applications of CARS, resonant, and surface-enhanced Raman spectroscopy methods are also discussed.
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Lu H, Han G, Cao J, Jin M, Ma Q, Akinoglu EM, Wang X, Nian L, Zhou G, Shui L. Large-Area and Patternable Nano-Dot Array from Electrolysis of ITO Film for Surface-Enhanced Raman Spectroscopy. NANOSCALE RESEARCH LETTERS 2020; 15:8. [PMID: 31933053 PMCID: PMC6957589 DOI: 10.1186/s11671-019-3239-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 12/24/2019] [Indexed: 06/10/2023]
Abstract
Fabrication of large-area devices with patternable nanostructures is important for practical applications in optical or electrical devices. In this work, we describe an easy and environment-friendly method for preparing large-area nano-dot (ND) arrays via the electrolytic reaction of a metal oxide film. NDs with various size and morphology can be obtained by adjusting the applied voltage, electrolysis time, and the film thickness of the indium tin oxide (ITO) layer. High-density NDs with size of 50-60 nm can be obtained by electrolysis of a 25-nm-thick ITO film at 150 V for 1.5 min under a water droplet medium, which have been applied for surface-enhanced Raman spectroscopy (SERS) after depositing a thin layer of silver. The SERS substrate with optimized ND structure exhibits sensitive detection of Rhodamine 6G (R6G) with detection limit down to 5 × 10-12 M. The enhancement factors (EFs) of 1.12 × 106 and 6.79 × 105 have been achieved for characterization of 4-methylbenzenethiol (4-MBT) and R6G, respectively. With an additional photolithographic step, multiple areas of ND arrays can be created on one substrate, enabling simultaneous detection of various samples containing different molecules at once experiment. Such a method is quick, easy, patternable, and environment-friendly, being suitable for on-site quick and synchronous determination of various molecules for applications in point-of-care, environmental monitoring, and airport security fields.
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Affiliation(s)
- Han Lu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Gengxin Han
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Jieping Cao
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Mingliang Jin
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China.
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, 526238, China.
| | - Qilin Ma
- School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006, China
| | - Eser Metin Akinoglu
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, 526238, China
| | - Xin Wang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, 526238, China
| | - Li Nian
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Guofu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, 526238, China
| | - Lingling Shui
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, China.
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, 526238, China.
- School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou, 510006, China.
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Mioc A, Mioc M, Ghiulai R, Voicu M, Racoviceanu R, Trandafirescu C, Dehelean C, Coricovac D, Soica C. Gold Nanoparticles as Targeted Delivery Systems and Theranostic Agents in Cancer Therapy. Curr Med Chem 2019; 26:6493-6513. [PMID: 31057102 DOI: 10.2174/0929867326666190506123721] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 03/13/2019] [Accepted: 03/19/2019] [Indexed: 12/15/2022]
Abstract
Cancer is still a leading cause of death worldwide, while most chemotherapies induce nonselective toxicity and severe systemic side effects. To address these problems, targeted nanoscience is an emerging field that promises to benefit cancer patients. Gold nanoparticles are nowadays in the spotlight due to their many well-established advantages. Gold nanoparticles are easily synthesizable in various shapes and sizes by a continuously developing set of means, including chemical, physical or eco-friendly biological methods. This review presents gold nanoparticles as versatile therapeutic agents playing many roles, such as targeted delivery systems (anticancer agents, nucleic acids, biological proteins, vaccines), theranostics and agents in photothermal therapy. They have also been outlined to bring great contributions in the bioimaging field such as radiotherapy, magnetic resonance angiography and photoacoustic imaging. Nevertheless, gold nanoparticles are therapeutic agents demonstrating its in vitro anti-angiogenic, anti-proliferative and pro-apoptotic effects on various cell lines, such as human cervix, human breast, human lung, human prostate and murine melanoma cancer cells. In vivo studies have pointed out data regarding the bioaccumulation and cytotoxicity of gold nanoparticles, but it has been emphasized that size, dose, surface charge, sex and especially administration routes are very important variables.
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Affiliation(s)
- Alexandra Mioc
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Marius Mioc
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Roxana Ghiulai
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Mirela Voicu
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Roxana Racoviceanu
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Cristina Trandafirescu
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Cristina Dehelean
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Dorina Coricovac
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
| | - Codruta Soica
- Faculty of Pharmacy, 'Victor Babes' University of Medicine and Pharmacy, Timisoara 300041, Romania
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Pandey PC, Shukla S, Skoog SA, Boehm RD, Narayan RJ. Current Advancements in Transdermal Biosensing and Targeted Drug Delivery. SENSORS (BASEL, SWITZERLAND) 2019; 19:E1028. [PMID: 30823435 PMCID: PMC6427209 DOI: 10.3390/s19051028] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/19/2019] [Accepted: 02/21/2019] [Indexed: 01/10/2023]
Abstract
In this manuscript, recent advancements in the area of minimally-invasive transdermal biosensing and drug delivery are reviewed. The administration of therapeutic entities through the skin is complicated by the stratum corneum layer, which serves as a barrier to entry and retards bioavailability. A variety of strategies have been adopted for the enhancement of transdermal permeation for drug delivery and biosensing of various substances. Physical techniques such as iontophoresis, reverse iontophoresis, electroporation, and microneedles offer (a) electrical amplification for transdermal sensing of biomolecules and (b) transport of amphiphilic drug molecules to the targeted site in a minimally invasive manner. Iontophoretic delivery involves the application of low currents to the skin as well as the migration of polarized and neutral molecules across it. Transdermal biosensing via microneedles has emerged as a novel approach to replace hypodermic needles. In addition, microneedles have facilitated minimally invasive detection of analytes in body fluids. This review considers recent innovations in the structure and performance of transdermal systems.
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Affiliation(s)
- Prem C Pandey
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, India.
| | - Shubhangi Shukla
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi 221005, India.
| | - Shelby A Skoog
- Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Raleigh, NC 27695, USA.
| | - Ryan D Boehm
- Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Raleigh, NC 27695, USA.
| | - Roger J Narayan
- Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Raleigh, NC 27695, USA.
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22
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Noothalapati H, Iwasaki K, Yamamoto T. Biological and Medical Applications of Multivariate Curve Resolution Assisted Raman Spectroscopy. ANAL SCI 2018; 33:15-22. [PMID: 28070069 DOI: 10.2116/analsci.33.15] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Biological specimens such as cells, tissues and biofluids (urine, blood) contain mixtures of many different biomolecules, all of which contribute to a Raman spectrum at any given point. The separation and identification of pure biochemical components remains one of the biggest challenges in Raman spectroscopy. Multivariate curve resolution, a matrix factorization method, is a powerful, yet flexible, method that can be used with constraints, such as non-negativity, to decompose a complex spectroscopic data matrix into a small number of physically meaningful pure spectral components along with their relative abundances. This paper reviews recent applications of multivariate curve resolution by alternating least squares analysis to Raman spectroscopic and imaging data obtained either in vivo or in vitro from biological and medical samples.
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23
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Affiliation(s)
- Garima Agrawal
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Paper Mill Road, Saharanpur 247 001, Uttar Pradesh, India
| | - Sangram K. Samal
- Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India
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24
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25
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Atkins CG, Buckley K, Blades MW, Turner RFB. Raman Spectroscopy of Blood and Blood Components. APPLIED SPECTROSCOPY 2017; 71:767-793. [PMID: 28398071 DOI: 10.1177/0003702816686593] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Blood is a bodily fluid that is vital for a number of life functions in animals. To a first approximation, blood is a mildly alkaline aqueous fluid (plasma) in which a large number of free-floating red cells (erythrocytes), white cells (leucocytes), and platelets are suspended. The primary function of blood is to transport oxygen from the lungs to all the cells of the body and move carbon dioxide in the return direction after it is produced by the cells' metabolism. Blood also carries nutrients to the cells and brings waste products to the liver and kidneys. Measured levels of oxygen, nutrients, waste, and electrolytes in blood are often used for clinical assessment of human health. Raman spectroscopy is a non-destructive analytical technique that uses the inelastic scattering of light to provide information on chemical composition, and hence has a potential role in this clinical assessment process. Raman spectroscopic probing of blood components and of whole blood has been on-going for more than four decades and has proven useful in applications ranging from the understanding of hemoglobin oxygenation, to the discrimination of cancerous cells from healthy lymphocytes, and the forensic investigation of crime scenes. In this paper, we review the literature in the field, collate the published Raman spectroscopy studies of erythrocytes, leucocytes, platelets, plasma, and whole blood, and attempt to draw general conclusions on the state of the field.
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Affiliation(s)
- Chad G Atkins
- 1 Michael Smith Laboratories, The University of British Columbia, Canada
- 2 Department of Chemistry, The University of British Columbia, Canada
| | - Kevin Buckley
- 1 Michael Smith Laboratories, The University of British Columbia, Canada
- 3 Nanoscale Biophotonics Laboratory, National University of Ireland, Ireland
| | - Michael W Blades
- 2 Department of Chemistry, The University of British Columbia, Canada
| | - Robin F B Turner
- 1 Michael Smith Laboratories, The University of British Columbia, Canada
- 2 Department of Chemistry, The University of British Columbia, Canada
- 4 Department of Electrical and Computer Engineering, The University of British Columbia, Canada
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26
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Cordeiro M, Ferreira Carlos F, Pedrosa P, Lopez A, Baptista PV. Gold Nanoparticles for Diagnostics: Advances towards Points of Care. Diagnostics (Basel) 2016; 6:diagnostics6040043. [PMID: 27879660 PMCID: PMC5192518 DOI: 10.3390/diagnostics6040043] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/13/2016] [Accepted: 11/18/2016] [Indexed: 12/24/2022] Open
Abstract
The remarkable physicochemical properties of gold nanoparticles (AuNPs) have prompted developments in the exploration of biomolecular interactions with AuNP-containing systems, in particular for biomedical applications in diagnostics. These systems show great promise in improving sensitivity, ease of operation and portability. Despite this endeavor, most platforms have yet to reach maturity and make their way into clinics or points of care (POC). Here, we present an overview of emerging and available molecular diagnostics using AuNPs for biomedical sensing that are currently being translated to the clinical setting.
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Affiliation(s)
- Mílton Cordeiro
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal.
- Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal.
| | - Fábio Ferreira Carlos
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal.
| | - Pedro Pedrosa
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal.
| | - António Lopez
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal.
| | - Pedro Viana Baptista
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal.
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Pham XH, Shim S, Kim TH, Hahm E, Kim HM, Rho WY, Jeong DH, Lee YS, Jun BH. Glucose detection using 4-mercaptophenyl boronic acid-incorporated silver nanoparticles-embedded silica-coated graphene oxide as a SERS substrate. BIOCHIP JOURNAL 2016. [DOI: 10.1007/s13206-016-1107-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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28
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Ji JH, Shin KS, Kang S, Lee SH, Kang JY, Kim S, Jun SC. Fundamental monomeric biomaterial diagnostics by radio frequency signal analysis. Biosens Bioelectron 2016; 82:255-61. [PMID: 27111728 DOI: 10.1016/j.bios.2016.03.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 03/04/2016] [Accepted: 03/08/2016] [Indexed: 01/18/2023]
Abstract
We present a new diagnostic technique of fundamental monomeric biomaterials that do not rely on any enzyme or chemical reaction. Instead, it only uses radio frequency (RF) signal analysis. The detection and classification of basic biomaterials, such as glucose and albumin, were demonstrated. The device was designed to generate a strong resonance response with glucose solution and fabricated by simple photolithography with PDMS (Polydimethylsiloxane) well. It even was used to detect the level of glucose in mixtures of glucose and albumin and in human serum, and it operated properly and identified the glucose concentration precisely. It has a detection limit about 100μM (1.8mg/dl), and a sensitivity about 58MHz per 1mM of glucose and exhibited a good linearity in human blood glucose level. In addition, the intrinsic electrical properties of biomaterials can be investigated by a de-embedding technique and an equivalent circuit analysis. The capacitance of glucose containing samples exhibited bell-shaped Gaussian dispersion spectra around 2.4GHz. The Albumin solution did not represent a clear dispersion spectra compared to glucose, and the magnitude of resistance and inductance of albumin was higher than that of other samples. Other parameters also represented distinguishable patterns to classify those biomaterials. It leads us to expect future usage of our technique as a pattern-recognizing biosensor.
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Affiliation(s)
- Jae-Hoon Ji
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea; Nano-Bioresearch Center, Korea Institute of Science and Technology, 39-1 Hawolgok Dong, Songbuk Gu, Seoul 136-791, Republic of Korea
| | - Kyeong-Sik Shin
- Nano-Bioresearch Center, Korea Institute of Science and Technology, 39-1 Hawolgok Dong, Songbuk Gu, Seoul 136-791, Republic of Korea
| | - Shinill Kang
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea
| | - Soo Hyun Lee
- Nano-Bioresearch Center, Korea Institute of Science and Technology, 39-1 Hawolgok Dong, Songbuk Gu, Seoul 136-791, Republic of Korea
| | - Ji Yoon Kang
- Nano-Bioresearch Center, Korea Institute of Science and Technology, 39-1 Hawolgok Dong, Songbuk Gu, Seoul 136-791, Republic of Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea
| | - Seong Chan Jun
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea.
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29
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Silver nanocluster films for glucose sensing by Surface Enhanced Raman Scattering (SERS). SENSING AND BIO-SENSING RESEARCH 2016. [DOI: 10.1016/j.sbsr.2016.05.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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30
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Thomas A, Heinemann L, Ramírez A, Zehe A. Options for the Development of Noninvasive Glucose Monitoring: Is Nanotechnology an Option to Break the Boundaries? J Diabetes Sci Technol 2016; 10:782-9. [PMID: 26581879 PMCID: PMC5038528 DOI: 10.1177/1932296815616133] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Nowadays nanotechnology has many applications in products used in various areas of daily life; however, this technology has also an option in modern medicine and pharmacy. Therefore, this technology is also an attractive option for the field of diagnosis and treatment of diabetes. Many people with diabetes measure their blood glucose levels regularly to determine the insulin dose. Ideally glucose values would be measured noninvasively (NI). However, none of all the NI approaches studied in the past decades enabled reliable NI measurements under all daily life conditions. Particularly an unfavorable signal-to-noise ratio turned out to be problematic. Based on the known physical possibilities for NI glucose monitoring the focus of this review is on nanotechnology approaches. Functional prototypes exist for some of these that showed promising results under defined laboratory conditions, indicating a good sensitivity and selectivity for glucose. On the second hand is to optimize the technological process of manufacturing. In view of the rapid progress in micro- and nanoelectronics hopefully NI glucose monitoring systems can be developed in the near future.
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Affiliation(s)
| | | | - Araceli Ramírez
- Laboratorio de Nanotrónica, Benemérita Universidad Autónoma de Puebla (BUAP), Ciudad Universitaria, Puebla, México
| | - Alfred Zehe
- Laboratorio de Nanotrónica, Benemérita Universidad Autónoma de Puebla (BUAP), Ciudad Universitaria, Puebla, México
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31
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Cheung M, Lee WWY, McCracken JN, Larmour IA, Brennan S, Bell SEJ. Raman Analysis of Dilute Aqueous Samples by Localized Evaporation of Submicroliter Droplets on the Tips of Superhydrophobic Copper Wires. Anal Chem 2016; 88:4541-7. [DOI: 10.1021/acs.analchem.6b00563] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Melody Cheung
- Innovative Molecular Materials
Group, School of Chemistry and Chemical Engineering, Queen’s University, David Keir
Building, Stranmillis Road, Belfast, United Kingdom, BT9
5AG
| | - Wendy W. Y. Lee
- Innovative Molecular Materials
Group, School of Chemistry and Chemical Engineering, Queen’s University, David Keir
Building, Stranmillis Road, Belfast, United Kingdom, BT9
5AG
| | - John N. McCracken
- Innovative Molecular Materials
Group, School of Chemistry and Chemical Engineering, Queen’s University, David Keir
Building, Stranmillis Road, Belfast, United Kingdom, BT9
5AG
| | - Iain A. Larmour
- Innovative Molecular Materials
Group, School of Chemistry and Chemical Engineering, Queen’s University, David Keir
Building, Stranmillis Road, Belfast, United Kingdom, BT9
5AG
| | - Steven Brennan
- Innovative Molecular Materials
Group, School of Chemistry and Chemical Engineering, Queen’s University, David Keir
Building, Stranmillis Road, Belfast, United Kingdom, BT9
5AG
| | - Steven E. J. Bell
- Innovative Molecular Materials
Group, School of Chemistry and Chemical Engineering, Queen’s University, David Keir
Building, Stranmillis Road, Belfast, United Kingdom, BT9
5AG
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32
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Yue J, Liu Z, Cai X, Ding X, Chen S, Tao K, Zhao T. Bull serum albumin coated Au@Agnanorods as SERS probes for ultrasensitive osteosarcoma cell detection. Talanta 2016; 150:503-9. [DOI: 10.1016/j.talanta.2015.12.065] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 12/21/2015] [Accepted: 12/24/2015] [Indexed: 11/27/2022]
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33
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Lane LA, Qian X, Nie S. SERS Nanoparticles in Medicine: From Label-Free Detection to Spectroscopic Tagging. Chem Rev 2015; 115:10489-529. [DOI: 10.1021/acs.chemrev.5b00265] [Citation(s) in RCA: 607] [Impact Index Per Article: 67.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lucas A. Lane
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Ximei Qian
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Shuming Nie
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
- College
of Engineering and Applied Sciences, Nanjing University, 22 Hankou
Road, Nanjing, Jiangsu Province 210093, China
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34
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Xia ML, Wang L, Yang ZX, Chen HZ. A novel digital color analysis method for rapid glucose detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2015; 7:6654-6663. [PMID: 39044376 DOI: 10.1039/c5ay01233c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
The spectrophotometer is the most used analysis equipment in traditional colorimetric methods. However, the operation of using a spectrophotometer is time-consuming and labor-intensive, which presents practical difficulties in rapid detection. To this end, we present a digital color analysis method, using the typical 3,5-dinitrosalicylic acid (DNS) method for glucose detection as an example. The primary colors from 3 color spaces (Red-Green-Blue, Hue-Saturation-Value, Hue-Saturation-Intensity) were studied as quantitative analytical parameters for the glucose concentration and the red color (from the Red-Green-Blue colorspace) of the assay image provides superior prediction precision (>99.8%). Combined with the color analysis, two calculation algorithms, nonlinear regression and artificial neural networks, were compared for the detection of a high concentration of glucose. Then a microtiter plate (48-well plate) platform, based on the color analysis, was set up. Compared to existing methods using a spectrophotometer, the digital color analysis method has a large detection range (0-10 g L-1), high accuracy (0.07 g L-1) and fast detection rate (150 samples detected within about 15 min). It also shows great promise for use in a variety of reducing sugar measurements such as xylose, fructose and maltose. These aforementioned features render this newly developed method highly suitable for quick detection applications.
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Affiliation(s)
- Meng-Lei Xia
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Lan Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Zhi-Xia Yang
- College of Mathematics and System Science, Xinjiang University, Urumchi, 830046, China
| | - Hong-Zhang Chen
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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35
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Ríos Á, Zougagh M. Modern qualitative analysis by miniaturized and microfluidic systems. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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36
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Nanoparticle properties and synthesis effects on surface-enhanced Raman scattering enhancement factor: an introduction. ScientificWorldJournal 2015; 2015:124582. [PMID: 25884017 PMCID: PMC4390178 DOI: 10.1155/2015/124582] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 11/01/2014] [Accepted: 11/02/2014] [Indexed: 01/05/2023] Open
Abstract
Raman spectroscopy has enabled researchers to map the specific chemical makeup of surfaces, solutions, and even cells. However, the inherent insensitivity of the technique makes it difficult to use and statistically complicated. When Raman active molecules are near gold or silver nanoparticles, the Raman intensity is significantly amplified. This phenomenon is referred to as surface-enhanced Raman spectroscopy (SERS). The extent of SERS enhancement is due to a variety of factors such as nanoparticle size, shape, material, and configuration. The choice of Raman reporters and protective coatings will also influence SERS enhancement. This review provides an introduction to how these factors influence signal enhancement and how to optimize them during synthesis of SERS nanoparticles.
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37
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Chng BXK, van Dijk T, Bhargava R, Carney PS. Enhancement and extinction effects in surface-enhanced stimulated Raman spectroscopy. Phys Chem Chem Phys 2015; 17:21348-55. [PMID: 25780806 DOI: 10.1039/c4cp05089d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We address the optical physics of surface-enhanced stimulated Raman spectroscopy (SESRS) from the microscopic to macroscopic scales to provide experimental design criteria in colloidal-suspension SESRS. The nanoparticles that provide local field enhancement also extinguish the Raman signal. We compute the total Raman signal detected from a suspension of Raman-active molecules and nanoparticles due to the cumulative effects of enhancement and extinction and find optimum operating parameters for pump frequency and nanoparticle concentration.
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Affiliation(s)
- B X K Chng
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405/N Mathews Ave, Urbana, IL 61801, USA.
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38
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Rapid, sensitive, and reusable detection of glucose by a robust radiofrequency integrated passive device biosensor chip. Sci Rep 2015; 5:7807. [PMID: 25588958 PMCID: PMC4295091 DOI: 10.1038/srep07807] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 12/08/2014] [Indexed: 11/21/2022] Open
Abstract
Tremendous demands for sensitive and reliable label-free biosensors have stimulated intensive research into developing miniaturized radiofrequency resonators for a wide range of biomedical applications. Here, we report the development of a robust, reusable radiofrequency resonator based integrated passive device biosensor chip fabricated on a gallium arsenide substrate for the detection of glucose in water-glucose solutions and sera. As a result of the highly concentrated electromagnetic energy between the two divisions of an intertwined spiral inductor coupled with an interdigital capacitor, the proposed glucose biosensor chip exhibits linear detection ranges with high sensitivity at center frequency. This biosensor, which has a sensitivity of up to 199 MHz/mgmL−1 and a short response time of less than 2 sec, exhibited an ultralow detection limit of 0.033 μM and a reproducibility of 0.61% relative standard deviation. In addition, the quantities derived from the measured S-parameters, such as the propagation constant (γ), impedance (Z), resistance (R), inductance (L), conductance (G) and capacitance (C), enabled the effective multi-dimensional detection of glucose.
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39
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Chattopadhyay S, Li MS, Kumar Roy P, Wu CT. Non-enzymatic glucose sensing by enhanced Raman spectroscopy on flexible ‘as-grown’ CVD graphene. Analyst 2015; 140:3935-41. [DOI: 10.1039/c5an00546a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Unmodified, as-grown few layer graphene (on copper) have been used for glucose sensing using Raman spectroscopy. The origin of the graphene enhanced Raman spectroscopy (GERS) signal of glucose is attributed to a charge transfer from glucose to graphene.
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Affiliation(s)
- Surojit Chattopadhyay
- Institute of Biophotonics
- National Yang-Ming University
- Taipei-112
- Taiwan
- Biophotonics and Molecular Imaging Research Centre
| | - Mau-Shiun Li
- Institute of Biophotonics
- National Yang-Ming University
- Taipei-112
- Taiwan
| | - Pradip Kumar Roy
- Institute of Biophotonics
- National Yang-Ming University
- Taipei-112
- Taiwan
| | - C. T. Wu
- Nano Device Materials Characterization Division
- National Nano Device Laboratories
- Hsinchu-300
- Taiwan
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40
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Aathira R, Jain V. Advances in management of type 1 diabetes mellitus. World J Diabetes 2014; 5:689-696. [PMID: 25317246 PMCID: PMC4138592 DOI: 10.4239/wjd.v5.i5.689] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 06/18/2014] [Accepted: 07/17/2014] [Indexed: 02/05/2023] Open
Abstract
Treatment of type 1 diabetes mellitus has always posed a challenge to balance hyperglycemia control with hypoglycemia episodes. The quest for newer therapies is continuing and this review attempts to outline the recent developments. The insulin molecule itself has got moulded into different analogues by minor changes in its structure to ensure well controlled delivery, stable half-lives and lesser side effects. Insulin delivery systems have also consistently undergone advances from subcutaneous injections to continuous infusion to trials of inhalational delivery. Continuous glucose monitoring systems are also becoming more accurate and user friendly. Smartphones have also made their entry into therapy of diabetes by integrating blood glucose levels and food intake with calculated adequate insulin required. Artificial pancreas has enabled to a certain extent to close the loop between blood glucose level and insulin delivery with devices armed with meal and exercise announcements, dual hormone delivery and pramlintide infusion. Islet, pancreas-kidney and stem cells transplants are also being attempted though complete success is still a far way off. Incorporating insulin gene and secretary apparatus is another ambitious leap to achieve insulin independence though the search for the ideal vector and target cell is still continuing. Finally to stand up to the statement, prevention is better than cure, immunological methods are being investigated to be used as vaccine to prevent the onset of diabetes mellitus.
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41
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Fu Y, Liu L, Zhang L, Wang W. Highly conductive one-dimensional nanofibers: silvered electrospun silica nanofibers via poly(dopamine) functionalization. ACS APPLIED MATERIALS & INTERFACES 2014; 6:5105-12. [PMID: 24650012 DOI: 10.1021/am5002663] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Using tetraethyl orthosilicate as a main raw material, silica nanofibers (SiNFs) were prepared through the combination of a sol-gel process and an electrospinning technique followed by pyrolysis. Surface modified electrospun SiNFs developed by self-polymerization of polydopamine on the surface (SiNFs-PDA) served as templates for the electroless plating of silver nanoparticles (Ag NPs), using glucose as a reducing agent. The electrical resistivity of silver coated SiNPs-PDA (SiNFs-PDA/Ag) was measured by the four-point probe method and was found to be as low as 0.02 mΩ·cm at room temperature. The morphology of SiNFs-PDA/Ag before and after the blending with silicon rubber indicated a strong interaction between the silver layer and the SiNFs-PDA. The electrical and mechanical properties of the silicon rubber filled with SiNFs-PDA/Ag were studied to demonstrate the conductive performance application of SiNFs-PDA/Ag.
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Affiliation(s)
- Ye Fu
- State Key Laboratory of Organic Inorganic Composites , Beijing 100029, China
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42
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Sun X, Stagon S, Huang H, Chen J, Lei Y. Functionalized aligned silver nanorod arrays for glucose sensing through surface enhanced Raman scattering. RSC Adv 2014. [DOI: 10.1039/c4ra02423k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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43
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A novel glucose biosensor platform based on Ag@AuNPs modified graphene oxide nanocomposite and SERS application. J Colloid Interface Sci 2013; 406:231-7. [DOI: 10.1016/j.jcis.2013.06.007] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/01/2013] [Accepted: 06/03/2013] [Indexed: 12/15/2022]
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44
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Croce RA, Vaddiraju S, Kondo J, Wang Y, Zuo L, Zhu K, Islam SK, Burgess DJ, Papadimitrakopoulos F, Jain FC. A miniaturized transcutaneous system for continuous glucose monitoring. Biomed Microdevices 2013; 15:151-60. [PMID: 22992979 DOI: 10.1007/s10544-012-9708-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Implantable sensors for continuous glucose monitoring hold great potential for optimal diabetes management. This is often undermined by a variety of issues associated with: (1) negative tissue response; (2) poor sensor performance; and (3) lack of device miniaturization needed to reduce implantation trauma. Herein, we report our initial results towards constructing an implantable device that simultaneously address all three aforementioned issues. In terms of device miniaturization, a highly miniaturized CMOS (complementary metal-oxide-semiconductor) potentiostat and signal processing unit was employed (with a combined area of 0.665 mm(2)). The signal processing unit converts the current generated by a transcutaneous, Clark-type amperometric sensor to output frequency in a linear fashion. The Clark-type amperometric sensor employs stratification of five functional layers to attain a well-balanced mass transfer which in turn yields a linear sensor response from 0 to 25 mM of glucose concentration, well beyond the physiologically observed (2 to 22 mM) range. In addition, it is coated with a thick polyvinyl alcohol (PVA) hydrogel with embedded poly(lactic-co-glycolic acid) (PLGA) microspheres intended to provide continuous, localized delivery of dexamethasone to suppress inflammation and fibrosis. In vivo evaluation in rat model has shown that the transcutaneous sensor system reproducibly tracks repeated glycemic events. Clarke's error grid analysis on the as-obtained glycemic data has indicated that all of the measured glucose readings fell in the desired Zones A & B and none fell in the erroneous Zones C, D and E. Such reproducible operation of the transcutaneous sensor system, together with low power (140 μW) consumption and capability for current-to-frequency conversion renders this a versatile platform for continuous glucose monitoring and other biomedical sensing devices.
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Affiliation(s)
- Robert A Croce
- Electrical & Computer Engineering, University of Connecticut, Storrs, CT 06269, USA
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45
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Nichols SP, Koh A, Storm WL, Shin JH, Schoenfisch MH. Biocompatible materials for continuous glucose monitoring devices. Chem Rev 2013; 113:2528-49. [PMID: 23387395 PMCID: PMC3624030 DOI: 10.1021/cr300387j] [Citation(s) in RCA: 188] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Scott P. Nichols
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Ahyeon Koh
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Wesley L. Storm
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jae Ho Shin
- Department of Chemistry, Kwangwoon University, Seoul, Korea
| | - Mark H. Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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46
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van Dijk T, Sivapalan ST, DeVetter BM, Yang TK, Schulmerich MV, Murphy CJ, Bhargava R, Carney PS. Competition Between Extinction and Enhancement in Surface Enhanced Raman Spectroscopy. J Phys Chem Lett 2013; 4:1193-1196. [PMID: 23814645 PMCID: PMC3694617 DOI: 10.1021/jz4005043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Conjugated metallic nanoparticles are a promising means to achieve ultrasensitive and multiplexed sensing in intact three-dimensional samples, especially for biological applications, via surface enhanced Raman scattering (SERS). We show that enhancement and extinction are linked and compete in a collection of metallic nanoparticles. Counterintuitively, the Raman signal vanishes when nanoparticles are excited at their plasmon resonance, while increasing nanoparticle concentrations at off-resonance excitation sometimes leads to decreased signal. We develop an effective medium theory that explains both phenomena. Optimal choices of excitation wavelength, individual particle enhancement factor and concentrations are indicated. The same processes which give rise to enhancement also lead to increased extinction of both the illumination and the Raman scattered light. Nanoparticles attenuate the incident field (blue) and at the same time provide local enhancement for SERS. Likewise the radiation of the Raman-scattered field (green) is enhanced by the near-by sphere but extinguished by the rest of the spheres in the suspension on propagation.
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47
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Cinta Pinzaru S, Falamas A, Dehelean CA. Molecular conformation changes along the malignancy revealed by optical nanosensors. J Cell Mol Med 2013; 17:277-86. [PMID: 23301881 PMCID: PMC3822590 DOI: 10.1111/jcmm.12006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Accepted: 10/24/2012] [Indexed: 02/06/2023] Open
Abstract
An interdisciplinary approach employing functionalized nanoparticles and ultrasensitive spectroscopic techniques is reported here to track the molecular changes in early stage of malignancy. Melanoma tissue tracking at molecular level using both labelled and unlabelled silver and gold nanoparticles has been achieved using surface enhanced Raman scattering (SERS) technique. We used skin tissue from ex vivo mice with induced melanoma. Raman and SERS molecular characterization of melanoma tissue is proposed here for the first time. Optical nanosensors based on Ag and Au nanoparticles with chemisorbed cresyl violet molecular species as labels revealed sensitive capability to tissues tagging and local molecular characterization. Sensitive information originating from surrounding native biological molecules is provided by the tissue SERS spectra obtained either with visible or NIR laser line. Labelled nanoparticles introduced systematic differences in tissue response compared with unlabelled ones, suggesting that the label functional groups tag specific tissue components revealed by proteins or nucleic acids bands. Vibrational data collected from tissue are presented in conjunction with the immunohistochemical analysis. The results obtained here open perspectives in applied plasmonic nanoparticles and SERS for the early cancer diagnostic based on the appropriate spectral databank.
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48
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In vivo blood glucose quantification using Raman spectroscopy. PLoS One 2012; 7:e48127. [PMID: 23133555 PMCID: PMC3485012 DOI: 10.1371/journal.pone.0048127] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 09/27/2012] [Indexed: 11/24/2022] Open
Abstract
We here propose a novel Raman spectroscopy method that permits the noninvasive measurement of blood glucose concentration. To reduce the effects of the strong background signals produced by surrounding tissue and to obtain the fingerprint Raman lines formed by blood analytes, a laser was focused on the blood in vessels in the skin. The Raman spectra were collected transcutaneously. Characteristic peaks of glucose (1125 cm-1) and hemoglobin (1549 cm-1) were observed. Hemoglobin concentration served as an internal standard, and the ratio of the peaks that appeared at 1125 cm-1 and 1549 cm-1 peaks was used to calculate the concentration of blood glucose. We studied three mouse subjects whose blood glucose levels became elevated over a period of 2 hours using a glucose test assay. During the test, 25 Raman spectra were collected transcutaneously and glucose reference values were provided by a blood glucose meter. Results clearly showed the relationship between Raman intensity and concentration. The release curves were approximately linear with a correlation coefficient of 0.91. This noninvasive methodology may be useful for the study of blood glucose in vivo.
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49
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Han XX, Ozaki Y, Zhao B. Label-free detection in biological applications of surface-enhanced Raman scattering. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.05.006] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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50
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Hao Q, Wang B, Bossard JA, Kiraly B, Zeng Y, Chiang IK, Jensen L, Werner DH, Huang TJ. Surface-Enhanced Raman Scattering Study on Graphene-Coated Metallic Nanostructure Substrates. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2012; 116:7249-7254. [PMID: 24772200 PMCID: PMC3998773 DOI: 10.1021/jp209821g] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Graphene, which has a linear electronic band structure, is widely considered as a semimetal. In the present study, we combine graphene with conventional metallic surface-enhanced Raman scattering (SERS) substrates to achieve higher sensitivity of SERS detection. We synthesize high-quality, single-layer graphene sheets by chemical vapor deposition (CVD) and transfer them from copper foils to gold nanostructures, i.e., nanoparticle or nanohole arrays. SERS measurements are carried out on methylene blue (MB) molecules. The combined graphene nanostructure substrates show about threefold or ninefold enhancement in the Raman signal of MB, compared with the bare nanohole or nanoparticle substrates, respectively. The difference in the enhancement factors is explained by the different morphologies of graphene on the two substrates with the aid of numerical simulations. Our study indicates that applying graphene to SERS substrates can be an effective way to improve the sensitivity of conventional metallic SERS substrates.
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Affiliation(s)
- Qingzhen Hao
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802
- Department of Physics, The Pennsylvania State University, University Park, PA 16802
| | - Bei Wang
- Department of Physics, The Pennsylvania State University, University Park, PA 16802
| | - Jeremy A. Bossard
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802
| | - Brian Kiraly
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802
| | - Yong Zeng
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802
| | - I-Kao Chiang
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802
| | - Lasse Jensen
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802
| | - Douglas H. Werner
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802
| | - Tony Jun Huang
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802
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