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Pumford A, White RJ. Controlling the Collision Type and Frequency of Single Pt Nanoparticles at Chemically Modified Gold Electrodes. Anal Chem 2024; 96:4800-4808. [PMID: 38470344 DOI: 10.1021/acs.analchem.3c04668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Studying the electrochemical response of single nanoparticles at an electrode surface gives insight into the dynamic and stochastic processes that occur at the electrode interface. Herein, we investigated single platinum nanoparticle collision dynamics and type (elastic vs inelastic) at gold electrode surfaces modified with self-assembled monolayers (SAMs) of varying terminal chemistries. Collision events are measured via the faradaic current from catalytic reactions at the Pt surface. By changing the terminal, solution-facing group of a thiolate monolayer, we observed the effect of hydrophobicity at the solution-electrode interface on single-particle collisions by employing either a hydrophobic -CH3 terminal group (1-hexanethiol), a hydrophilic -OH terminal group (6-mercaptohexanol), or an equimolar mixture of the two. Changes in the terminal group lead to alterations in collision-induced current magnitude, collisional frequency, and the distinct shape of the collision event current transient. The effects of the terminal group of the SAM were probed by measuring quantitative differences in the events monitored through both the hydrogen evolution reaction (HER) and hydrazine oxidation. In both cases, a platinum nanoparticle (PtNP) favors adsorption to bare and hydrophilic surfaces but demonstrates elastic collision behavior when it collides with a hydrophobic surface. In the case of a mixed monolayer, distinct characteristics of hydrophobic and hydrophilic surfaces are observed. We report how single nanoparticle collisions can reveal nanoscale surface heterogeneity and can be used to manipulate the nature of single-particle interactions on an electrode surface by functionalized self-assembled monolayers.
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Affiliation(s)
- Audrey Pumford
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Ryan J White
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
- Department of Electrical Engineering and Computer Science, University of Cincinnati, Cincinnati, Ohio 45221, United States
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2
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Chen WT, Chiu PY, Chen CF. A flash signal amplification approach for ultrasensitive and rapid detection of single nucleotide polymorphisms in tuberculosis. Biosens Bioelectron 2023; 237:115514. [PMID: 37423064 DOI: 10.1016/j.bios.2023.115514] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/29/2023] [Accepted: 07/03/2023] [Indexed: 07/11/2023]
Abstract
In recent years, the demand for rapid, sensitive, and simple methods for diagnosing deoxyribonucleic acid (DNA) has grown due to the increase in the variation of infectious diseases. This work aimed to develop a flash signal amplification method coupled with electrochemical detection for polymerase chain reaction (PCR)-free tuberculosis (TB) molecular diagnosis. We exploited the slightly miscible properties of butanol and water to instantly concentrate a capture probe DNA, a single-stranded mismatch DNA, and gold nanoparticles (AuNPs) to a small volume to reduce the diffusion and reaction time in the solution. In addition, the electrochemical signal was enhanced once two strands of DNA were hybridized and bound to the surface of the gold nanoparticle at an ultra-high density. To eliminate non-specific adsorption and identify mismatched DNA, the self-assembled monolayers (SAMs) and Muts proteins were sequentially modified on the working electrode. This sensitive and specific approach can detect as low as attomolar levels of DNA targets (18 aM) and is successfully applied to detecting tuberculosis-associated single nucleotide polymorphisms (SNPs) in synovial fluid. More importantly, as this biosensing strategy can amplify the signal in only a few seconds, it possesses a great potential for point-of-care and molecular diagnosis applications.
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Affiliation(s)
- Wei-Ting Chen
- Institute of Applied Mechanics, National Taiwan University, Taipei, 106, Taiwan
| | - Ping-Yeh Chiu
- Institute of Applied Mechanics, National Taiwan University, Taipei, 106, Taiwan; Department of Orthopaedic Surgery, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, 333, Taiwan
| | - Chien-Fu Chen
- Institute of Applied Mechanics, National Taiwan University, Taipei, 106, Taiwan; Graduate School of Advanced Technology, National Taiwan University, Taipei, 106, Taiwan.
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3
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Preziosi V, Barra M, Villella VR, Esposito S, D'Angelo P, Marasso SL, Cocuzza M, Cassinese A, Guido S. Immuno-Sensing at Ultra-Low Concentration of TG2 Protein by Organic Electrochemical Transistors. BIOSENSORS 2023; 13:bios13040448. [PMID: 37185523 PMCID: PMC10136445 DOI: 10.3390/bios13040448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/24/2023] [Accepted: 03/29/2023] [Indexed: 05/17/2023]
Abstract
Transglutaminase 2 (TG2) is a ubiquitously expressed member of the transglutaminase family with Ca2+-dependent protein crosslinking activity. Its subcellular localization is crucial in determining its function, and indeed, TG2 is found in the extracellular matrix, mitochondria, recycling endosomes, plasma membrane, cytosol, and nucleus because it is associated with cell growth, differentiation, and apoptosis. It is involved in several pathologies, such as celiac disease, cardiovascular, hepatic, renal, and fibrosis diseases, carrying out opposite functions of up and down regulation in the progression of the same pathology. Therefore, this fine regulation requires a very sensitive and specific method of identification of TG2, which is to be detected in very small quantities in a deregulated condition. Here, we demonstrate the possibility of detecting TG2 down to attomolar concentration by using organic electrochemical transistors driven by gold electrodes functionalized with anti-TG2 antibodies. In particular, a direct correlation between the TG2 concentration and the transistor transconductance values, as extracted from typical transfer curves, was found. Overall, our findings highlight the potentialities of this new biosensing approach for the detection of TG2 in the context of pathological diseases, offering a rapid and cost-effective alternative to traditional methods.
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Affiliation(s)
- Valentina Preziosi
- Department of Chemical, Materials and Production Engineering, University Federico II, P.le Tecchio 80, I-80125 Naples, Italy
| | - Mario Barra
- CNR-SPIN, c/o Department of Physics "Ettore Pancini", P.le Tecchio, 80, I-80125 Naples, Italy
| | - Valeria Rachela Villella
- Department of Chemical, Materials and Production Engineering, University Federico II, P.le Tecchio 80, I-80125 Naples, Italy
- CEINGE, Advanced Biotechnologies, Via Gaetano Salvatore 486, I-80145 Naples, Italy
| | - Speranza Esposito
- Department of Chemical, Materials and Production Engineering, University Federico II, P.le Tecchio 80, I-80125 Naples, Italy
- CEINGE, Advanced Biotechnologies, Via Gaetano Salvatore 486, I-80145 Naples, Italy
| | | | - Simone Luigi Marasso
- IMEM-CNR, Parco Area delle Scienze 37/A, I-43124 Parma, Italy
- ChiLab, Department of Applied Science and Technology, Politecnico di Torino, I-10129 Torino, Italy
| | - Matteo Cocuzza
- IMEM-CNR, Parco Area delle Scienze 37/A, I-43124 Parma, Italy
- ChiLab, Department of Applied Science and Technology, Politecnico di Torino, I-10129 Torino, Italy
| | - Antonio Cassinese
- CNR-SPIN, c/o Department of Physics "Ettore Pancini", P.le Tecchio, 80, I-80125 Naples, Italy
- Department of Physics "Ettore Pancini", University Federico II, P.le Tecchio 80, I-80125 Naples, Italy
| | - Stefano Guido
- Department of Chemical, Materials and Production Engineering, University Federico II, P.le Tecchio 80, I-80125 Naples, Italy
- CEINGE, Advanced Biotechnologies, Via Gaetano Salvatore 486, I-80145 Naples, Italy
- National Interuniversity Consortium for Materials Science and Technology (INSTM), I-50121 Firenze, Italy
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Hans R, Yadav PK, Zaman MB, Poolla R, Thavaselvam D. A rapid direct-differential agglutination assay for Brucella detection using antibodies conjugated with functionalized gold nanoparticles. FRONTIERS IN NANOTECHNOLOGY 2023. [DOI: 10.3389/fnano.2023.1132783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
Brucellosis is the most widespread and serious zoonotic disease worldwide which affects livestock, sylvatic wildlife, marine dwellers, and humans. It is acquired through Alphaproteobacteria which belong to the genus Brucella and is categorized as a potential bio-threat agent. In this study, we developed a rapid and direct differential whole cell (WC) agglutination-based assay for its on-field detection. The recombinant outer membrane (rOmp28) protein-derived specific mice IgG polyclonal antibodies (pAbs) of Brucella were purified using affinity chromatography and conjugated with functionalized gold nanoparticles (AuNPs) for rapid agglutination. A positive blot of 32 kDa protein revealed specific immuno-reactivity of rOmp28-pAbs using immunoblot analysis. For the synthesis of AuNPs, the conventional “Turkevich method” was optimized at a concentration < 1 mM of gold precursor for obtaining 50-nm-sized particles. Also, their physico-chemical characteristics were analyzed using UV-visible spectrophotometry, Fourier transform infra-red spectroscopy (FT-IR), Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta potential (ζ, ZP), and fluorescence spectroscopy. Furthermore, these AuNPs were functionalized with N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) to prepare modified carboxylated AuNPs. For bioconjugation with Brucella rOmp28 IgG pAbs, antibody-conjugated functionalized AuNP constructs were prepared and characterized using FT-IR analysis with strong N–H deformations. Subsequently, these bioconjugated AuNPs were used to develop a direct-differential slide agglutination assay with a detection limit of 104 CFU mL−1. The sensitivity of this assay was compared with standard double-antibody sandwich ELISA (S-ELISA) using rOmp28 IgG pAbs with an LOD of 103 CFU mL−1 and a detection range of 102–108 CFU mL−1. No intraspecies cross-reactivity was observed based on evaluation of its specificity with a battery of closely related bacterial species. In conclusion, the increased sensitivity and specificity of the developed agglutination assay obtained using bioconjugated functionalized AuNPs is ≥ 98% for the detection of Brucella. Therefore, it can be used as an alternate rapid method of direct WC detection of bacteria as it is simple, robust, and cost-effective, with minimal time of reaction in the case of early disease diagnosis.
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Pérez-Ginés V, Torrente-Rodríguez RM, Pedrero M, Martínez-Bosch N, de Frutos PG, Navarro P, Pingarrón JM, Campuzano S. Electrochemical immunoplatform to help managing pancreatic cancer. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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3An Electrochemical Conducting Polymer-based Biosensor for Leukocyte Esterase and Nitrite Detection for Diagnosing Urinary Tract Infections: A Pilot Study. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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7
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Hui Y, Huang Z, Alahi MEE, Nag A, Feng S, Mukhopadhyay SC. Recent Advancements in Electrochemical Biosensors for Monitoring the Water Quality. BIOSENSORS 2022; 12:bios12070551. [PMID: 35884353 PMCID: PMC9313366 DOI: 10.3390/bios12070551] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/10/2022] [Accepted: 07/13/2022] [Indexed: 05/06/2023]
Abstract
The release of chemicals and microorganisms from various sources, such as industry, agriculture, animal farming, wastewater treatment plants, and flooding, into water systems have caused water pollution in several parts of our world, endangering aquatic ecosystems and individual health. World Health Organization (WHO) has introduced strict standards for the maximum concentration limits for nutrients and chemicals in drinking water, surface water, and groundwater. It is crucial to have rapid, sensitive, and reliable analytical detection systems to monitor the pollution level regularly and meet the standard limit. Electrochemical biosensors are advantageous analytical devices or tools that convert a bio-signal by biorecognition elements into a significant electrical response. Thanks to the micro/nano fabrication techniques, electrochemical biosensors for sensitive, continuous, and real-time detection have attracted increasing attention among researchers and users worldwide. These devices take advantage of easy operation, portability, and rapid response. They can also be miniaturized, have a long-life span and a quick response time, and possess high sensitivity and selectivity and can be considered as portable biosensing assays. They are of special importance due to their great advantages such as affordability, simplicity, portability, and ability to detect at on-site. This review paper is concerned with the basic concepts of electrochemical biosensors and their applications in various water quality monitoring, such as inorganic chemicals, nutrients, microorganisms' pollution, and organic pollutants, especially for developing real-time/online detection systems. The basic concepts of electrochemical biosensors, different surface modification techniques, bio-recognition elements (BRE), detection methods, and specific real-time water quality monitoring applications are reviewed thoroughly in this article.
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Affiliation(s)
- Yun Hui
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;
| | - Zhaoling Huang
- School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China;
| | - Md Eshrat E. Alahi
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;
- Correspondence: (M.E.E.A.); (S.F.)
| | - Anindya Nag
- Faculty of Electrical and Computer Engineering, Technische Universität Dresden, 01062 Dresden, Germany;
- Centre for Tactile Internet with Human-in-the-Loop (CeTI), Technische Universität Dresden, 01069 Dresden, Germany
| | - Shilun Feng
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
- Correspondence: (M.E.E.A.); (S.F.)
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Sharma P, Chauhan R, Pande V, Basu T, Rajesh, Kumar A. Rapid sensing ofTilletia indica - Teliospore in wheat extractby apiezoelectric label free immunosensor. Bioelectrochemistry 2022; 147:108175. [PMID: 35749887 DOI: 10.1016/j.bioelechem.2022.108175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/01/2022] [Accepted: 06/04/2022] [Indexed: 11/02/2022]
Abstract
'Tilletia indica', a fungal pathogen causes Karnal bunt disease in wheat. It has been renowned as a quarantine pest in more than 50 countries, therefore, urged a threat to wheat in the international market. To date, conventional methods employed to detect the disease involve the tentative identification of spores (teliospores) based on morphology. For effective and specific disease control, it is essential to get the specific protein of the analyte (teliospore) to target. In present study, a label-free immunosensor has been developed to detect Karnal bunt disease. A specifically synthesized anti-teliosporic monoclonal antibody (mAb) was immobilized on a self-assembled monolayer of 11-mercaptoundecanoic acid (11-MUA) to detect teliospore. All modified electrodes were morphologically characterized by scanning electron microscopy (SEM), atomic force microscopy(AFM), Fourier transform infra-red spectroscopy (FT-IR) techniques and analytically characterized by quartz crystal microbalance (QCM) and cyclic voltammetry (CV). The linearity range was 19 pg mL-1-10 ng mL-1, while the detection limit (LOD) was 4.4 pg mL-1 and 12.5 pg mL-1, respectively. The stability, reproducibility, and repeatability of the immunoelectrode was examined by CV, and found stable upto 18 days with negligible variation. The binding affinity (association constant (Ka)) of the developed immunoelectrode was 1.9 × 10-2 ng mL-1. The real sample has been tested in spiked wheat samples and found about 95-103 % recovery with 2.8-4.4 % relative error.
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Affiliation(s)
- Priyanka Sharma
- Department of Biotechnology, Kumaun University, Bhimtal Campus, Bhimtal, Nainital, Uttarakhand, 263136, India; Department of Molecular Biology and Genetic Engineering, College of Basic Sciences & Humanities, G.B. Pant University of Agriculture & Technology, Pant Nagar 263145, Uttarakhand, India.
| | - Ruchika Chauhan
- Department of Molecular Biology and Genetic Engineering, College of Basic Sciences & Humanities, G.B. Pant University of Agriculture & Technology, Pant Nagar 263145, Uttarakhand, India
| | - Veena Pande
- Department of Biotechnology, Kumaun University, Bhimtal Campus, Bhimtal, Nainital, Uttarakhand, 263136, India
| | - Tinku Basu
- Amity Centre for Nanomedicine, Amity University Uttar Pradesh, Noida 201303, India
| | - Rajesh
- CSIR- National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India
| | - Anil Kumar
- Department of Molecular Biology and Genetic Engineering, College of Basic Sciences & Humanities, G.B. Pant University of Agriculture & Technology, Pant Nagar 263145, Uttarakhand, India; Director Education, Rani Lakshmi Bai Central Agricultural University, Jhansi 284003, India.
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9
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β-1,4-Galactosyltransferase-V colorectal cancer biomarker immunosensor with label-free electrochemical detection. Talanta 2022; 243:123337. [DOI: 10.1016/j.talanta.2022.123337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/10/2022] [Accepted: 02/25/2022] [Indexed: 12/16/2022]
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10
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Zhang Y, Liu Y. A Digital Microfluidic Device Integrated with Electrochemical Impedance Spectroscopy for Cell-Based Immunoassay. BIOSENSORS 2022; 12:bios12050330. [PMID: 35624631 PMCID: PMC9138827 DOI: 10.3390/bios12050330] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 05/31/2023]
Abstract
The dynamic immune response to various diseases and therapies has been considered a promising indicator of disease status and therapeutic effectiveness. For instance, the human peripheral blood mononuclear cell (PBMC), as a major player in the immune system, is an important index to indicate a patient's immune function. Therefore, establishing a simple yet sensitive tool that can frequently assess the immune system during the course of disease and treatment is of great importance. This study introduced an integrated system that includes an electrochemical impedance spectroscope (EIS)-based biosensor in a digital microfluidic (DMF) device, to quantify the PBMC abundance with minimally trained hands. Moreover, we exploited the unique droplet manipulation feature of the DMF platform and conducted a dynamic cell capture assay, which enhanced the detection signal by 2.4-fold. This integrated system was able to detect as few as 104 PBMCs per mL, presenting suitable sensitivity to quantify PBMCs. This integrated system is easy-to-operate and sensitive, and therefore holds great potential as a powerful tool to profile immune-mediated therapeutic responses in a timely manner, which can be further evolved as a point-of-care diagnostic device to conduct near-patient tests from blood samples.
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Affiliation(s)
- Yuqian Zhang
- Department of Surgery, Division of Surgical Research, Mayo Clinic, Rochester, MN 55905, USA;
- Microbiome Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Yuguang Liu
- Department of Surgery, Division of Surgical Research, Mayo Clinic, Rochester, MN 55905, USA;
- Microbiome Program, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
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11
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Affinity-Recognition-Based Gravimetric Nanosensor for Equilin Detection. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10050172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
The estrogenic hormones that are widely used in postmenopausal hormone supplements for women contaminate natural water resources. Equilin (Equ) is one of the estrogenic hormones that have a maximum contaminant level of 0.35 µg/L in the chemical pollutants list. In this study, estrogenic hormones were precisely detected in a short time by affinity-recognition-based interactions in Quartz Crystal Microbalance (QCM) sensors. The QCM sensors were modified with 11-mercaptoundecanoic acid forming a self-assembled monolayer and with amino acids, namely tyrosine, tryptophan and phenylalanine. The affinity interactions between Equ and amino acids were studied using docking tools and confirmed by QCM experiments. The LODs of Equ were obtained as 4.59, 5.05 and 6.30 ng/L for tyrosine-, tryptophan- and phenylalanine-modified QCM nanosensors, respectively, with linear dynamic detection in the range of 25–500 nM. In terms of the LOD, selectivity and sensitivity calculations, the tyrosine-modified QCM nanosensor was found to have the highest performance for Equ detection compared to the tryptophan- and phenylalanine-modified ones.
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12
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Electrochemical and X-ray Photoelectron Spectroscopy Surface Characterization of Interchain-Driven Self-Assembled Monolayer (SAM) Reorganization. NANOMATERIALS 2022; 12:nano12050867. [PMID: 35269355 PMCID: PMC8912756 DOI: 10.3390/nano12050867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/23/2022] [Accepted: 03/02/2022] [Indexed: 11/16/2022]
Abstract
Herein, we report a combined strategy encompassing electrochemical and x-ray photoelectron spectroscopy (XPS) experiments to investigate self-assembled monolayer (SAM) conformational reorganization onto an electrode surface due to the application of an electrical field. In particular, 3-mercaptopriopionic acid SAM (3MPA SAM) modified gold electrodes are activated with a 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysulfosuccinimide (NHSS) (EDC-NHSS) mixture by shortening the activation time, from 2 h to 15/20 min, labelled as Protocol-A, -B and -C, respectively. This step, later followed by a deactivation process with ethanolamine (EA), plays a key role in the reaction yields (formation of N-(2-hydroxyethyl)-3-mercaptopropanamide, NMPA) but also in the conformational rearrangement observed during the application of the electrical field. This study aims at explaining the high performance (i.e., single-molecule detection at a large electrode interface) of bioelectronic devices, where the 3MPA-based SAM structure is pivotal in achieving extremely high sensing performance levels due to its interchain interaction. Cyclic voltammetry (CV) experiments performed in K4Fe(CN)6:K3Fe(CN)6 for 3MPA SAMs that are activated/deactivated show similar trends of anodic peak current (IA) over time, mainly related to the presence of interchain hydrogen bonds, driving the conformational rearrangements (tightening of SAMs structure) while applying an electrical field. In addition, XPS analysis allows correlation of the deactivation yield with electrochemical data (conformational rearrangements), identifying the best protocol in terms of high reaction yield, mainly related to the shorter reaction time, and not triggering any side reactions. Finally, Protocol-C’s SAM surface coverage, determined by CV in H2SO4 and differential pulse voltammetry (DPV) in NaOH, was 1.29 * 1013 molecules cm−2, being similar to the bioreceptor surface coverage in single-molecule detection at a large electrode interface.
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Choudhury P, Biswas S, Singh G, Pal A, Ghosh N, Ojha AK, Das S, Dutta G, Chaudhury K. Immunological profiling and development of a sensing device for detection of IL-13 in COPD and asthma. Bioelectrochemistry 2021; 143:107971. [PMID: 34666224 DOI: 10.1016/j.bioelechem.2021.107971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 09/21/2021] [Accepted: 09/28/2021] [Indexed: 11/29/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) and asthma are the two most common obstructive lung diseases which affects millions worldwide and impose an enormous burden on global healthcare. The overlapping features shared by these two diseases often make differential diagnosis difficult to achieve, leading to misdiagnosis of these patients. Both asthma and COPD are associated with chronic inflammation of the airways which is perpetuated by the interplay between immunological mediators. The crucial role played by these mediators make them attractive targets for disease diagnosis. The present study investigates the immunological mediator profile in these patients as compared with controls. Further, a potential biomarker for the development of a sensing platform is identified. Multiplexed analysis of 8 commonly studied immunological markers (IL-4, IL-5, IL-6, IL-13, TGF-β, IFN-γ, MCP-1 and NGAL) in serum showed distinct dysregulation pattern, with IL-13 showing the highest potential for differential diagnosis. An impedimetric self-assembled monolayer (SAM) based sensor for detecting IL-13 is developed to distinguish between asthma and COPD. The device shows reliable output with high accuracy and sensitivity towards the detection of IL-13.
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Affiliation(s)
- Priyanka Choudhury
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Souvik Biswas
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Gyanendra Singh
- ICMR-National Institute of Occupational Health, Meghaninagar, Ahmedabad, Gujarat, India
| | - Arijit Pal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Nilanjana Ghosh
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Atul Kumar Ojha
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Soumen Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Gorachand Dutta
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India
| | - Koel Chaudhury
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, India.
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14
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Drozd M, Karoń S, Malinowska E. Recent Advancements in Receptor Layer Engineering for Applications in SPR-Based Immunodiagnostics. SENSORS (BASEL, SWITZERLAND) 2021; 21:3781. [PMID: 34072572 PMCID: PMC8198293 DOI: 10.3390/s21113781] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/23/2021] [Accepted: 05/26/2021] [Indexed: 12/12/2022]
Abstract
The rapid progress in the development of surface plasmon resonance-based immunosensing platforms offers wide application possibilities in medical diagnostics as a label-free alternative to enzyme immunoassays. The early diagnosis of diseases or metabolic changes through the detection of biomarkers in body fluids requires methods characterized by a very good sensitivity and selectivity. In the case of the SPR technique, as well as other surface-sensitive detection strategies, the quality of the transducer-immunoreceptor interphase is crucial for maintaining the analytical reliability of an assay. In this work, an overview of general approaches to the design of functional SPR-immunoassays is presented. It covers both immunosensors, the design of which utilizes well-known and often commercially available substrates, as well as the latest solutions developed in-house. Various approaches employing chemical and passive binding, affinity-based antibody immobilization, and the introduction of nanomaterial-based surfaces are discussed. The essence of their influence on the improvement of the main analytical parameters of a given immunosensor is explained. Particular attention is paid to solutions compatible with the latest trends in the development of label-free immunosensors, such as platforms dedicated to real-time monitoring in a quasi-continuous mode, the use of in situ-generated receptor layers (elimination of the regeneration step), and biosensors using recombinant and labelled protein receptors.
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Affiliation(s)
- Marcin Drozd
- Faculty of Chemistry, The Chair of Medical Biotechnology, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;
- Center for Advanced Materials and Technologies, Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
| | - Sylwia Karoń
- Faculty of Chemistry, The Chair of Medical Biotechnology, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;
- Center for Advanced Materials and Technologies, Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
| | - Elżbieta Malinowska
- Faculty of Chemistry, The Chair of Medical Biotechnology, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;
- Center for Advanced Materials and Technologies, Warsaw University of Technology, Poleczki 19, 02-822 Warsaw, Poland
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15
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Kishore C, Bhadra P. Current advancements and future perspectives of immunotherapy in colorectal cancer research. Eur J Pharmacol 2020; 893:173819. [PMID: 33347822 DOI: 10.1016/j.ejphar.2020.173819] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 11/17/2020] [Accepted: 12/08/2020] [Indexed: 12/24/2022]
Abstract
5-Fluorouracil (5-FU) is the first-line chemotherapy drug for colorectal cancer but most of the patients get resistant to the drug on a longer course of treatment. After the successful use of immunotherapy in melanoma treatment, it was explored with enthusiasm in different types of solid cancers including colorectal cancer. Nivolumab and pembrolizumab (Programmed cell death-1 blocking antibodies) have shown efficacy in the mismatch repair deficient high microsatellite instability (dMMR-MSI-H) subtype of metastatic colorectal cancer (CRC) patients. Immunotherapy has shown long time remission in a subset of metastatic CRC patients. The molecular mechanism and emerging roles of immunotherapy in colorectal cancer are explored in this review article and future directions for the proper utilization of the development in immunobiology are suggested.
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Affiliation(s)
- Chandra Kishore
- Life Science Building, Fatki Kutti, Madhepur, Madhubani, Patna, 847408, Bihar, India.
| | - Priyanka Bhadra
- Boral Tripursundari Road, Kolkata, 700154, West Bengal, India
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16
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Blasi D, Sarcina L, Tricase A, Stefanachi A, Leonetti F, Alberga D, Mangiatordi GF, Manoli K, Scamarcio G, Picca RA, Torsi L. Enhancing the Sensitivity of Biotinylated Surfaces by Tailoring the Design of the Mixed Self-Assembled Monolayer Synthesis. ACS OMEGA 2020; 5:16762-16771. [PMID: 32685844 PMCID: PMC7364725 DOI: 10.1021/acsomega.0c01717] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 06/18/2020] [Indexed: 05/04/2023]
Abstract
Thiolated self-assembled monolayers (SAMs) are typically used to anchor on a gold surface biomolecules serving as recognition elements for biosensor applications. Here, the design and synthesis of N-(2-hydroxyethyl)-3-mercaptopropanamide (NMPA) in biotinylated mixed SAMs is proposed as an alternative strategy with respect to on-site multistep functionalization of SAMs prepared from solutions of commercially available thiols. In this study, the mixed SAM deposited from a 10:1 solution of 3-mercaptopropionic acid (3MPA) and 11-mercaptoundecanoic acid (11MUA) is compared to that resulting from a 10:1 solution of NMPA:11MUA. To this end, surface plasmon resonance (SPR) and attenuated total reflectance infrared (ATR-IR) experiments have been carried out on both mixed SAMs after biotinylation. The study demonstrated how the fine tuning of the SAM features impacts directly on both the biofunctionalization steps, i.e., the biotin anchoring, and the biorecognition properties evaluated upon exposure to streptavidin analyte. Higher affinity for the target analyte with reduced nonspecific binding and lower detection limit has been demonstrated when NMPA is chosen as the more abundant starting thiol. Molecular dynamics simulations complemented the experimental findings providing a molecular rationale behind the performance of the biotinylated mixed SAMs. The present study confirms the importance of the functionalization design for the development of a highly performing biosensor.
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Affiliation(s)
- Davide Blasi
- CSGI,
Unità di Bari, Unità
di Bari, Via Orabona 4, 70125 Bari, Italy
| | - Lucia Sarcina
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Angelo Tricase
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Angela Stefanachi
- Dipartimento
di Farmacia − Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Francesco Leonetti
- Dipartimento
di Farmacia − Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | | | | | - Kyriaki Manoli
- CSGI,
Unità di Bari, Unità
di Bari, Via Orabona 4, 70125 Bari, Italy
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Gaetano Scamarcio
- Dipartimento
di Fisica “M. Merlin”, Università
degli Studi di Bari Aldo Moro, Via Amendola 173, 70126 Bari, Italy
- IFN
CNR, Sede secondaria di Bari, Via Amendola 173, 70126 Bari, Italy
| | - Rosaria Anna Picca
- CSGI,
Unità di Bari, Unità
di Bari, Via Orabona 4, 70125 Bari, Italy
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
| | - Luisa Torsi
- CSGI,
Unità di Bari, Unità
di Bari, Via Orabona 4, 70125 Bari, Italy
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
- Physics
and Center for Functional Materials, Faculty of Science and Engineering, Åbo Akademi University, Porthansgatan 3, 20500 Åbo, Finland
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17
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Wan J, Mi L, Tian Z, Li Q, Liu S. A single-liquid miniature biofuel cell with boosting power density via gas diffusion bioelectrodes. J Mater Chem B 2020; 8:3550-3556. [PMID: 31834338 DOI: 10.1039/c9tb02100k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The low solubility of gas molecules in aqueous solutions has limited the power density output of enzymatic biofuel cells. Herein, a single-liquid miniature glucose-O2 fuel cell was constructed by using gas diffusion electrodes, which were prepared by immobilizing glucose oxidase (GOx) or laccase (Lac) modified on a porous structured carbon paper (CP). Due to the fast and direct O2 diffusion from air to the active sites of the immobilized enzyme through the pores of the CP anode/cathode with controlled wettability, the maximum power output densities dramatically increased to 9.64 μW cm-2 at 0.43 V and 53.0 μW cm-2 at 0.45 V for the cell in 5 mM glucose and after exposing the cell to air or O2 atmosphere, respectively. Interestingly, the resulting single-liquid cell could harvest power from human serum operating at a maximum power density of 49.0 μW cm-2 at 0.2 V. The biofuel cell fabricated by the gas diffusion electrodes displayed advantages such as high output power density, low cost and high 'on-chip' integrability and miniaturization, which suggest its great potential for implantable self-powered sensors and for many future applications.
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Affiliation(s)
- Jing Wan
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device (CMD), School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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18
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A comparative study on EpCAM antibody immobilization on gold surfaces and microfluidic channels for the detection of circulating tumor cells. Colloids Surf B Biointerfaces 2020; 188:110808. [PMID: 31991289 DOI: 10.1016/j.colsurfb.2020.110808] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 01/09/2023]
Abstract
Detection of circulating tumor cells (CTCs) from the bloodstream holds great importance to diagnose cancer at early stages. However, CTCs being extremely rare in blood makes them difficult to reach. In this paper, we introduced different surface modification techniques for the enrichment and detection of MCF-7 in microfluidic biosensor applications using gold surface and EpCAM antibody. Mainly, two different mechanisms were employed to immobilize the antibodies; covalent bonding and bioaffinity interaction. Self-assembled monolayers (SAMs) formed on the gold surfaces were treated further for the immobilization of the antibody. The bioaffinity-based studies were performed with streptavidin and biotinylated EpCAM over the SAM coated surfaces. The cell attachment events were monitored using fluorescent microscope. Comparisons were made considering the length and functional end of alkanethiols and the positioning of the antibody. Then, these methods were integrated into a microfluidic channel system. Surface characterizations were performed with X-ray Photoelectron Spectroscopy, Atomic Force Microscopy, and contact angle measurements. The selectivity studies were carried out with EpCAM negative K562 leukaemia cell lines and the experiments were repeated for different types of surfaces, such as glass and polymer. Studies showed that long (n>10) and aromatic ring containing alkanethiols lead to better cell capture events compared to shorter ones. Results obtained from the comparisons are of importance for the gold surface-based microfluidic biosensor designs aimed for CTC detection.
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19
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Rao AVRK, Reddy RB, Sengupta S, Chelvam V. Efficient “turn-on” nanosensor by dual emission-quenching mechanism of functionalized Se doped ZnO nanorods for mercury (II) detection. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0875-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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20
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Bao WJ, Li J, Cao TY, Li J, Xia XH. Chain-length dependent interfacial immunoreaction kinetics on self-assembled monolayers revealed by surface-enhanced infrared absorption spectroscopy. Talanta 2018; 176:124-129. [DOI: 10.1016/j.talanta.2017.08.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 08/02/2017] [Accepted: 08/05/2017] [Indexed: 01/30/2023]
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21
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Oriented Antibody Immobilization and Immunoassay Based on Boronic Acid-containing Polymer Brush. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-018-2031-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Influence of antibody immobilization strategies on the analytical performance of a magneto-elastic immunosensor for Staphylococcus aureus detection. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:1232-1239. [DOI: 10.1016/j.msec.2017.03.107] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 03/12/2017] [Indexed: 12/12/2022]
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23
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Shangguan L, Wei Y, Liu X, Yu J, Liu S. Confining a bi-enzyme inside the nanochannels of a porous aluminum oxide membrane for accelerating the enzymatic reactions. Chem Commun (Camb) 2017; 53:2673-2676. [DOI: 10.1039/c7cc00300e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
An artificial metabolon with high conversion efficiency was constructed by confining a bi-enzyme into porous aluminum oxide nanochannels, which accelerated enzymatic reactions by minimizing the diffusion loss of intermediate species.
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Affiliation(s)
- Li Shangguan
- Key Laboratory of Environmental Medicine Engineering
- Ministry of Education
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device
- School of Chemistry and Chemical Engineering
- Southeast University
| | - Yuanqing Wei
- Key Laboratory of Environmental Medicine Engineering
- Ministry of Education
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device
- School of Chemistry and Chemical Engineering
- Southeast University
| | - Xu Liu
- Key Laboratory of Environmental Medicine Engineering
- Ministry of Education
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device
- School of Chemistry and Chemical Engineering
- Southeast University
| | - Jiachao Yu
- Key Laboratory of Environmental Medicine Engineering
- Ministry of Education
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device
- School of Chemistry and Chemical Engineering
- Southeast University
| | - Songqin Liu
- Key Laboratory of Environmental Medicine Engineering
- Ministry of Education
- Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device
- School of Chemistry and Chemical Engineering
- Southeast University
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24
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Menti C, Henriques JAP, Missell FP, Roesch-Ely M. Antibody-based magneto-elastic biosensors: potential devices for detection of pathogens and associated toxins. Appl Microbiol Biotechnol 2016; 100:6149-6163. [DOI: 10.1007/s00253-016-7624-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/02/2016] [Accepted: 05/04/2016] [Indexed: 11/29/2022]
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