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Liu L, Wang D, Luo Y, Liu Y, Guo Y, Yang GZ, Qiu G. Intraoperative assessment of microimplantation-induced acute brain inflammation with titanium oxynitride-based plasmonic biosensor. Biosens Bioelectron 2024; 264:116664. [PMID: 39159588 DOI: 10.1016/j.bios.2024.116664] [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: 02/21/2024] [Revised: 07/11/2024] [Accepted: 08/10/2024] [Indexed: 08/21/2024]
Abstract
Implantable devices for brain-machine interfaces and managing neurological disorders have experienced rapid growth in recent years. Although functional implants offer significant benefits, issues related to transient trauma and long-term biocompatibility and safety are of significant concern. Acute inflammatory reaction in the brain tissue caused by microimplants is known to be an issue but remains poorly studied. This study presents the use of titanium oxynitride (TiNO) nanofilm with defined surface plasmon resonance (SPR) properties for point-of-care characterizing of acute inflammatory responses during robot-controlled micro-neuro-implantation. By leveraging surface-enriched oxynitride, TiNO nanofilms can be biomolecular-functionalized through silanization. This label-free TiNO-SPR biosensor exhibits a high sensitivity toward the inflammatory cytokine interleukin-6 with a detection limit down to 6.3 fg ml-1 and a short assay time of 25 min. Additionally, intraoperative monitoring of acute inflammatory responses during microelectrode implantation in the mice brain has been accomplished using the TiNO-SPR biosensors. Through intraoperative cerebrospinal fluid sampling and point-of-care plasmonic biosensing, the rhythm of acute inflammatory responses induced by the robot-controlled brain microelectrodes implantation has been successfully depicted, offering insights into intraoperative safety assessment of invasive brain-machine interfaces.
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Affiliation(s)
- Linlin Liu
- Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China
| | - Danhua Wang
- Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China
| | - Yating Luo
- Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China
| | - Yuxuan Liu
- Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China
| | - Yao Guo
- Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China
| | - Guang-Zhong Yang
- Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China.
| | - Guangyu Qiu
- Institute of Medical Robotics, School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China.
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2
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Arcadio F, Seggio M, Pitruzzella R, Zeni L, Bossi AM, Cennamo N. An Efficient Bio-Receptor Layer Combined with a Plasmonic Plastic Optical Fiber Probe for Cortisol Detection in Saliva. BIOSENSORS 2024; 14:351. [PMID: 39056627 PMCID: PMC11274917 DOI: 10.3390/bios14070351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024]
Abstract
Cortisol is a clinically validated stress biomarker that takes part in many physiological and psychological functions related to the body's response to stress factors. In particular, it has emerged as a pivotal tool for understanding stress levels and overall well-being. Usually, in clinics, cortisol levels are monitored in blood or urine, but significant changes are also registered in sweat and saliva. In this work, a surface plasmon resonance probe based on a D-shaped plastic optical fiber was functionalized with a glucocorticoid receptor exploited as a highly efficient bioreceptor specific to cortisol. The developed plastic optical fiber biosensor was tested for cortisol detection in buffer and artificial saliva. The biosensor response showed very good selectivity towards other hormones and a detection limit of about 59 fM and 96 fM in phosphate saline buffer and artificial saliva, respectively. The obtained detection limit, with a rapid detection time (about 5 min) and a low-cost sensor system, paved the way for determining the cortisol concentration in saliva samples without any extraction process or sample pretreatment via a point-of-care test.
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Affiliation(s)
- Francesco Arcadio
- Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031 Aversa, Italy; (F.A.); (R.P.); (L.Z.)
| | - Mimimorena Seggio
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy;
| | - Rosalba Pitruzzella
- Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031 Aversa, Italy; (F.A.); (R.P.); (L.Z.)
| | - Luigi Zeni
- Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031 Aversa, Italy; (F.A.); (R.P.); (L.Z.)
| | - Alessandra Maria Bossi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy;
| | - Nunzio Cennamo
- Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031 Aversa, Italy; (F.A.); (R.P.); (L.Z.)
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3
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Awawdeh K, Buttkewitz MA, Bahnemann J, Segal E. Enhancing the performance of porous silicon biosensors: the interplay of nanostructure design and microfluidic integration. MICROSYSTEMS & NANOENGINEERING 2024; 10:100. [PMID: 39021530 PMCID: PMC11252414 DOI: 10.1038/s41378-024-00738-w] [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: 03/27/2024] [Revised: 06/08/2024] [Accepted: 06/12/2024] [Indexed: 07/20/2024]
Abstract
This work presents the development and design of aptasensor employing porous silicon (PSi) Fabry‒Pérot thin films that are suitable for use as optical transducers for the detection of lactoferrin (LF), which is a protein biomarker secreted at elevated levels during gastrointestinal (GI) inflammatory disorders such as inflammatory bowel disease and chronic pancreatitis. To overcome the primary limitation associated with PSi biosensors-namely, their relatively poor sensitivity due to issues related to complex mass transfer phenomena and reaction kinetics-we employed two strategic approaches: First, we sought to optimize the porous nanostructure with respect to factors including layer thickness, pore diameter, and capture probe density. Second, we leveraged convection properties by integrating the resulting biosensor into a 3D-printed microfluidic system that also had one of two different micromixer architectures (i.e., staggered herringbone micromixers or microimpellers) embedded. We demonstrated that tailoring the PSi aptasensor significantly improved its performance, achieving a limit of detection (LOD) of 50 nM-which is >1 order of magnitude lower than that achieved using previously-developed biosensors of this type. Moreover, integration into microfluidic systems that incorporated passive and active micromixers further enhanced the aptasensor's sensitivity, achieving an additional reduction in the LOD by yet another order of magnitude. These advancements demonstrate the potential of combining PSi-based optical transducers with microfluidic technology to create sensitive label-free biosensing platforms for the detection of GI inflammatory biomarkers.
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Affiliation(s)
- Kayan Awawdeh
- Faculty of Biotechnology and Food Engineering, Technion—Israel Institute of Technology, 320003 Haifa, Israel
| | - Marc A. Buttkewitz
- Institute of Technical Chemistry, Leibniz Universität Hannover, 30167 Hannover, Germany
| | - Janina Bahnemann
- Institute of Physics, University of Augsburg, 86159 Augsburg, Germany
- Centre for Advanced Analytics and Predictive Sciences (CAAPS), University of Augsburg, 86159 Augsburg, Germany
| | - Ester Segal
- Faculty of Biotechnology and Food Engineering, Technion—Israel Institute of Technology, 320003 Haifa, Israel
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4
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Arcadio F, Soares S, Nedoma J, Aguiar D, Pereira AC, Zeni L, Cennamo N, Marques C. POF-based biosensors for cortisol detection in seawater as a tool for aquaculture systems. Sci Rep 2024; 14:13117. [PMID: 38849511 PMCID: PMC11161578 DOI: 10.1038/s41598-024-63870-7] [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] [Received: 04/24/2024] [Accepted: 06/03/2024] [Indexed: 06/09/2024] Open
Abstract
A surface plasmon resonance (SPR) phenomenon implemented via D-shaped polymer optical fiber (POF) is exploited to realize cortisol biosensors. In this work, two immonosensors are designed and developed for the qualitative as well as quantitative measurement of cortisol in artificial and real samples. The performances of the POF-based biosensors in cortisol recognition are achieved using different functionalization protocols to make the same antibody receptor layer over the SPR surface via cysteamine and lipoic acid, achieving a limit of detection (LOD) of 0.8 pg/mL and 0.2 pg/mL, respectively. More specifically, the use of cysteamine or lipoic acid changes the distance between the receptor layer and the SPR surface, improving the sensitivity at low concentrations of about one order of magnitude in the configuration based on lipoic acid. The LODs of both cortisol biosensors are achieved well competitively with other sensor systems but without the need for amplification or sample treatments. In order to obtain the selectivity tests, cholesterol and testosterone were used as interfering substances. Moreover, tests in simulated seawater were performed for the same cortisol concentration range achieved in buffer solution to assess the immunosensor response to the complex matrix. Finally, the developed cortisol biosensor was used in a real seawater sample to estimate the cortisol concentration value. The gold standard method has confirmed the estimated cortisol concentration value in real seawater samples. Liquid-liquid extraction was implemented to maximize the response of cortisol in liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) analysis.
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Grants
- PRIN2022 - 2022JRKETK European Commission
- CZ.10.03.01/00/22_003/0000048 European Commission
- PRIN2022 - 2022JRKETK European Commission
- PRIN2022 - 2022JRKETK European Commission
- CZ.10.03.01/00/22_003/0000048 European Commission
- PTDC/EEI-EEE/0415/2021, LA/P/0006/2020, UIDB/50011/2020, UIDP/50011/2020, LA/P/0037/2020, UIDB/50025/2020, UIDP/50025/2020 Fundação para a Ciência e a Tecnologia
- PTDC/EEI-EEE/0415/2021, LA/P/0006/2020, UIDB/50011/2020, UIDP/50011/2020, LA/P/0037/2020, UIDB/50025/2020, UIDP/50025/2020 Fundação para a Ciência e a Tecnologia
- PTDC/EEI-EEE/0415/2021, LA/P/0006/2020, UIDB/50011/2020, UIDP/50011/2020, LA/P/0037/2020, UIDB/50025/2020, UIDP/50025/2020 Fundação para a Ciência e a Tecnologia
- PTDC/EEI-EEE/0415/2021, LA/P/0006/2020, UIDB/50011/2020, UIDP/50011/2020, LA/P/0037/2020, UIDB/50025/2020, UIDP/50025/2020 Fundação para a Ciência e a Tecnologia
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Affiliation(s)
- Francesco Arcadio
- Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031, Aversa, Italy
| | - Simone Soares
- CICECO -Aveiro Institute of Materials & Physics Department, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
- I3N & Physics Department, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Jan Nedoma
- Department of Telecommunications, VSB - Technical University of Ostrava, Ostrava, 70800, Czech Republic
| | - Dayana Aguiar
- ISOPlexis, Centre for Sustainable Agriculture and Food Technology, University of Madeira, Campus da Penteada, 9020-105, Funchal, Portugal
| | - Ana Cristina Pereira
- ISOPlexis, Centre for Sustainable Agriculture and Food Technology, University of Madeira, Campus da Penteada, 9020-105, Funchal, Portugal
- Chemical Process Engineering and Forest Products Research Centre, Department of Chemical Engineering, University of Coimbra, Pólo II-Rua Sílvio Lima, 3030-790, Coimbra, Portugal
| | - Luigi Zeni
- Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031, Aversa, Italy
| | - Nunzio Cennamo
- Department of Engineering, University of Campania Luigi Vanvitelli, Via Roma 29, 81031, Aversa, Italy.
| | - Carlos Marques
- CICECO -Aveiro Institute of Materials & Physics Department, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
- Department of Physics, VSB - Technical University of Ostrava, Ostrava, 70800, Czech Republic.
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5
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Funari R, Chu KY, Shen AQ. Multiplexed Opto-Microfluidic Biosensing: Advanced Platform for Prostate Cancer Detection. ACS Sens 2024; 9:2596-2604. [PMID: 38683677 DOI: 10.1021/acssensors.4c00312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Cancer stands as a prominent global cause of mortality, necessitating early detection to augment survival rates and alleviate economic burdens on healthcare systems. In particular, prostate cancer (PCa), impacting 1.41 million men globally in 2020, accentuates the demand for sensitive and cost-effective detection methods beyond traditional prostate-specific antigen (PSA) testing. While clinical techniques exhibit limitations, biosensors emerge as compact, user-friendly alternatives to traditional laboratory approaches. However, existing biosensors predominantly concentrate on PSA detection, prompting the necessity for advancing toward multiplex sensing platforms. This study introduces a compact opto-microfluidic sensor featuring a substrate of gold nanospikes, fabricated via electrodeposition, for enhanced sensitivity. Embedded within a microfluidic chip, this nanomaterial enables the precise and concurrent measurement of PSA, alongside two complementary PCa biomarkers, matrix metalloproteinase-2 (MMP-2) and anti-α-methylacyl-CoA racemase (anti-AMACR) in diluted human plasma, offering a comprehensive approach to PSA analysis. Taking advantage of the localized surface plasmon resonance principle, this biosensor offers robustness and sensitivity in real sample analysis without the need for labeling agents. With the limit of detection at 0.22, 0.37, and 0.18 ng/mL for PSA, MMP-2, and anti-AMACR, respectively, this biosensing platform holds promise for point-of-care analysis, underscoring its potential impact on medical diagnostics.
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Affiliation(s)
- Riccardo Funari
- Institute of Mechanical Intelligence, Scuola Superiore Sant'Anna, Via G. Moruzzi, 1, Pisa 56124, Italy
| | - Kang-Yu Chu
- Neurobiology Research Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan
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6
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Shin S, Kim S, Choi W, Do J, Son J, Kim K, Jang S, Lee JS. Sensing Characteristics of SARS-CoV-2 Spike Protein Using Aptamer-Functionalized Si-Based Electrolyte-Gated Field-Effect Transistor (EGT). BIOSENSORS 2024; 14:124. [PMID: 38534231 DOI: 10.3390/bios14030124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/17/2024] [Accepted: 02/22/2024] [Indexed: 03/28/2024]
Abstract
The sensing responses of SARS-CoV-2 spike protein using top-down-fabricated Si-based electrolyte-gated transistors (EGTs) have been investigated. An aptamer was employed as a receptor for the SARS-CoV-2 spike protein. The EGT demonstrated excellent intrinsic characteristics and higher sensitivity in the subthreshold regime compared to the linear regime. The limit of detection (LOD) was achieved as low as 0.94 pg/mL and 20 pg/mL for the current and voltage sensitivity, respectively. To analyze the sensing responses of EGT in detecting the aptamer-SARS-CoV-2 spike protein conjugate, a lumped-capacitive model with the presence of an effective dipole potential and an effective capacitance of the functionalized layer component was employed. The aptamer-functionalized EGT showed high sensitivity even in 10 mM phosphate-buffered saline (PBS) solution. These results suggest that Si-based EGTs are a highly promising method for detecting SARS-CoV-2 spike proteins.
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Affiliation(s)
- Seonghwan Shin
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Sangwon Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Wonyeong Choi
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Jeonghyeon Do
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Jongmin Son
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Kihyun Kim
- Division of Electronics Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Sungkey Jang
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Jeong-Soo Lee
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
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7
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Li S, De Groote Tavares C, Tolar JG, Ajo-Franklin CM. Selective bioelectronic sensing of pharmacologically relevant quinones using extracellular electron transfer in Lactiplantibacillus plantarum. Biosens Bioelectron 2024; 243:115762. [PMID: 37875059 DOI: 10.1016/j.bios.2023.115762] [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: 06/27/2023] [Revised: 10/13/2023] [Accepted: 10/15/2023] [Indexed: 10/26/2023]
Abstract
Redox-active small molecules containing quinone functional groups play important roles as pharmaceuticals, but can be toxic if overdosed. Despite the need for a fast and quantitative method to detect quinone and its derivatives, current sensing strategies are often slow and struggle to differentiate between structural analogs. Leveraging the discovery that microorganisms use certain quinones to perform extracellular electron transfer (EET), we investigated the use of Lactiplantibacillus plantarum as a whole-cell bioelectronic sensor to selectively sense quinone analogs. By tailoring the native EET pathway in L. plantarum, we enabled quantitative quinone sensing of 1,4-dihydroxy-2-naphthoic acid (DHNA) - a gut bifidogenic growth stimulator. We found that L. plantarum could respond to environmental DHNA within seconds, producing concentration-dependent electrical signals. This sensing capacity was robust in different assay media and allowed for continuous monitoring of DHNA concentrations. In a simulated gut environment containing a mixed pool of quinone derivatives, this tailored EET pathway can selectively sense pharmacologically relevant quinone analogs, such as DHNA and menadione, amongst other structurally similar quinone derivatives. We also developed a multivariate model to describe the mechanism behind this selectivity and found a predictable correlation between quinone physiochemical properties and the corresponding electrical signals. Our work presents a new concept to selectively sense quinone using whole-cell bioelectronic sensors and opens the possibility of using probiotic L. plantarum for bioelectronic applications in human health.
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Affiliation(s)
- Siliang Li
- Department of BioSciences, Rice University, Houston, TX, USA
| | | | - Joe G Tolar
- Department of BioSciences, Rice University, Houston, TX, USA
| | - Caroline M Ajo-Franklin
- Department of BioSciences, Rice University, Houston, TX, USA; Department of Bioengineering, Rice University, Houston, TX, USA; Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA.
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8
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Pasquardini L, Cennamo N, Arcadio F, Perri C, Chiodi A, D'agostino G, Zeni L. Immuno-SPR biosensor for the detection of Brucella abortus. Sci Rep 2023; 13:22832. [PMID: 38129569 PMCID: PMC10739931 DOI: 10.1038/s41598-023-50344-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/19/2023] [Indexed: 12/23/2023] Open
Abstract
A proof of principle biosensor for the Brucella abortus recognition onsite is presented. The system is based on a plasmonic optical fiber probe functionalized with an oriented antibody layer immobilized on a short polyethyleneglycol (PEG) interface through carbodiimide chemistry and protein G as an intermediate layer. The biosensor is inserted in a holder built in 3D printing technology, obtaining a custom holder useful for housing the sample to be measured and the equipment. The removable sensor chip is a low-cost Surface Plasmon Resonance (SPR) platform based on D-shaped plastic optical fibers (POFs), built-in in 3D printed connectors, used here for the first time to detect bacteria via a bio-receptor layer specific for its membrane protein. The performances of the biosensor in Brucella abortus recognition are tested by using two different SPR-POF probes combined with the same bio-receptor layer. The best sensor configuration has presented a sensitivity at low concentrations of one order of magnitude greater than the other. A limit of detection (LoD) of 2.8 bacteria/mL is achieved well competitive with other systems but without the need for amplification or special sample treatments. Specificity has been tested using Salmonella bacteria, and reproducibility, regenerability and stability are moreover evaluated. These experimental results pave the way for building an efficient and specific biosensor system for Brucella abortus detection onsite and in a few minutes. Moreover, the proposed POF-based SPR biosensor device, with respect to the already available technologies, could be a Point-of-care-test (POCT), simple to use, small-size and portable, low-cost, don't necessary of a microfluidic system, and can be connected to the Internet (IoT).
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Affiliation(s)
- Laura Pasquardini
- Indivenire Srl, Via Sommarive 18, 38123, Trento, Italy.
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031, Aversa, Italy.
| | - Nunzio Cennamo
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031, Aversa, Italy
| | - Francesco Arcadio
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031, Aversa, Italy
| | - Chiara Perri
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031, Aversa, Italy
- Moresense Srl, Filarete Foundation, Viale Ortles 22/4, 20139, Milan, Italy
| | - Alessandro Chiodi
- Moresense Srl, Filarete Foundation, Viale Ortles 22/4, 20139, Milan, Italy
| | | | - Luigi Zeni
- Department of Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031, Aversa, Italy.
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9
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Janićijević Ž, Nguyen-Le TA, Alsadig A, Cela I, Žilėnaite R, Tonmoy TH, Kubeil M, Bachmann M, Baraban L. Methods gold standard in clinic millifluidics multiplexed extended gate field-effect transistor biosensor with gold nanoantennae as signal amplifiers. Biosens Bioelectron 2023; 241:115701. [PMID: 37757510 DOI: 10.1016/j.bios.2023.115701] [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: 06/20/2023] [Revised: 08/30/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023]
Abstract
We present a portable multiplexed biosensor platform based on the extended gate field-effect transistor and demonstrate its amplified response thanks to gold nanoparticle-based bioconjugates introduced as a part of the immunoassay. The platform comprises a disposable chip hosting an array of 32 extended gate electrodes, a readout module based on a single transistor operating in constant charge mode, and a multiplexer to scan sensing electrodes one-by-one. Although employing only off-the-shelf electronic components, our platform achieves sensitivities comparable to fully customized nanofabricated potentiometric sensors. In particular, it reaches a detection limit of 0.2 fM for the pure molecular assay when sensing horseradish peroxidase-linked secondary antibody (∼0.4 nM reached by standard microplate methods). Furthermore, with the gold nanoparticle bioconjugation format, we demonstrate ca. 5-fold amplification of the potentiometric response compared to a pure molecular assay, at the detection limit of 13.3 fM. Finally, we elaborate on the mechanism of this amplification and propose that nanoparticle-mediated disruption of the diffusion barrier layer is the main contributor to the potentiometric signal enhancement. These results show the great potential of our portable, sensitive, and cost-efficient biosensor for multidimensional diagnostics in the clinical and laboratory settings, including e.g., serological tests or pathogen screening.
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Affiliation(s)
- Željko Janićijević
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Trang-Anh Nguyen-Le
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Ahmed Alsadig
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Isli Cela
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Rugilė Žilėnaite
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany; Faculty of Chemistry and Geosciences, Institute of Chemistry, Vilnius University, Naugarduko g. 24, LT-03225, Vilnius, Lithuania
| | - Taufhik Hossain Tonmoy
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Manja Kubeil
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Michael Bachmann
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Larysa Baraban
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328, Dresden, Germany.
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10
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Creyer MN, Retout M, Jin Z, Yim W, Jokerst JV. Ligation of Gold Nanoparticles with Self-Assembling, Coiled-Coil Peptides. J Phys Chem B 2023; 127:8009-8018. [PMID: 37683185 DOI: 10.1021/acs.jpcb.3c02099] [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: 09/10/2023]
Abstract
The surface of gold nanoparticles (AuNPs) can be conjugated with a wide range of highly functional biomolecules. A common pitfall when utilizing AuNPs is their tendency to aggregate, especially when their surface is functionalized with ligands of low molecular weight (no steric repulsion) or ligands of neutral charge (no electrostatic repulsion). For biomedical applications, AuNPs that are colloidally stable are desirable because they have a high surface area and thus reactivity, resist sedimentation, and exhibit uniform optical properties. Here, we engineer the surface of AuNPs so that they remain stable when decorated with coiled-coil (CC) peptides while preserving the native polypeptide properties. We achieve this by using a neutral, mixed ligand layer composed of lipoic acid poly(ethylene glycol) and lipoic acid poly(ethylene glycol) maleimide to attach the CCs. Tuning the surface fraction of each component within the mixed ligand layer also allowed us to control the degree of AuNP labeling with CCs. We demonstrate the dynamic surface properties of these CC-AuNPs by performing a place-exchange reaction and their utility by designing an energy-transfer-based caspase-3 sensor. Overall, this study optimizes the surface chemistry of AuNPs to quantitatively present functional biomolecules while maintaining colloid stability.
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Affiliation(s)
- Matthew N Creyer
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Maurice Retout
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Zhicheng Jin
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Wonjun Yim
- Materials Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Jesse V Jokerst
- Department of Nano and Chemical Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Materials Science and Engineering Program, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
- Department of Radiology, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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11
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Abrantes-Coutinho VE, Santos AO, Holanda BEB, Costa HRA, Oliveira TMBF. Integrating machine learning and electrochemistry to develop a glucose biosensor assembled with Ganoderma applanatum lectin. Bioelectrochemistry 2023; 151:108392. [PMID: 36753946 DOI: 10.1016/j.bioelechem.2023.108392] [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: 11/12/2022] [Revised: 01/19/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023]
Abstract
Fungal lectins have enormous biotechnological potential, but limited knowledge about their biochemical and biophysical features prevents their proper use. Herein, we report an innovative alternative to use Ganoderma applanatum lectin (GAL) as a glucose biorecognition element, after identifying the ideal electroanalytical conditions by machine learning studies performed with a homologous agglutinin from the same macrofungus. The research revealed that GAL has moderate resistance to pH (4-8) and temperature (20-60 °C) variations, but its hemagglutinating activity (376.5 HU mg-1 GAL at 20 °C) was better conserved under physiological conditions. Integrating electrochemical data and semi-empirical molecular modeling, biocompatible and electrostatically favorable conditions were found to immobilize the lectin on Prussian blue-modified glassy carbon electrode, after thermal activation of the metal-complex film. The glucose dose-response relationship obtained with the developed biosensor, defined as GAL/ta-PB/GCE, showed a typical Hill equation correlation, suggesting electrodic interactions represented by a sigmoidal mathematical function. GAL/ta-PB/GCE achieved remarkable electroanalytical performance, with emphasis on the detection limit (10.2 pM) and sensitivity (0.012 µA µM-1cm-2). The biosensor was successfully used to quantify glucose in pharmaceutical formulations, reiterating that the association of theoretical and experimental information drives important advances in bioelectrochemical studies.
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Affiliation(s)
| | - André O Santos
- Centro de Ciência e Tecnologia, Universidade Federal do Cariri, 63048-080 Juazeiro do Norte, CE, Brazil
| | - Brenna E B Holanda
- Centro de Ciência e Tecnologia, Universidade Federal do Cariri, 63048-080 Juazeiro do Norte, CE, Brazil
| | - Heryka R A Costa
- Centro de Ciência e Tecnologia, Universidade Federal do Cariri, 63048-080 Juazeiro do Norte, CE, Brazil
| | - Thiago M B F Oliveira
- Centro de Ciência e Tecnologia, Universidade Federal do Cariri, 63048-080 Juazeiro do Norte, CE, Brazil.
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12
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Santos AO, Abrantes-Coutinho VE, Morais S, Oliveira TMBF. Agaricus bisporus Wild Mushroom Extract as Lectin Source for Engineering a Lactose Photoelectrochemical Biosensor. BIOSENSORS 2023; 13:224. [PMID: 36831990 PMCID: PMC9953549 DOI: 10.3390/bios13020224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Agaricus bisporus mushroom biomass contains a lectin, ABL, with remarkable specificity for lactose biorecognition; in this work, this feature was explored to develop a photoelectrochemical biosensor. The high lectin activity found in saline extracts of this macrofungus (640 HU mL-1), even at critical pH values (4-10) and temperatures (20-100 °C), allowed its direct use as an ABL source. Theoretical and experimental evidence revealed favorable electrostatic and biocompatible conditions to immobilize ABL on a poly(methylene blue)/fluorine-doped tin oxide-coated glass platform, giving rise to the ABL/PMB/FTO biosensor. The conducting polymer added further photoactivity to the device, allowing the identification of lectin-carbohydrate interactions with even greater sensitivity. The dose-response curves studied by electrochemical impedance spectroscopy showed a sigmoidal profile that was well-fitted by Hill's equation, expanding the working dynamic range (15-540 nmol L-1 lactose; 20.2 pmol L-1 detection limit) and avoiding undesirable sample dilution or preconcentration procedures. Under the optimized photoelectrochemical conditions, the ABL/PMB/FTO biosensor showed remarkable signal stability, accuracy, specificity, and selectivity to analyze lactose in commercial food products. This research raises interest in ABL-based biosensors and the added value of the crude Agaricus bisporus extract toward the development of greener and more sustainable biotechnological approaches.
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Affiliation(s)
- André O. Santos
- Centro de Ciência e Tecnologia, Universidade Federal do Cariri, Juazeiro do Norte 63048-080, CE, Brazil
| | | | - Simone Morais
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 431, 4249-015 Porto, Portugal
| | - Thiago M. B. F. Oliveira
- Centro de Ciência e Tecnologia, Universidade Federal do Cariri, Juazeiro do Norte 63048-080, CE, Brazil
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13
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Ultrasensitive rapid cytokine sensors based on asymmetric geometry two-dimensional MoS 2 diodes. Nat Commun 2022; 13:7593. [PMID: 36535944 PMCID: PMC9763493 DOI: 10.1038/s41467-022-35278-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022] Open
Abstract
The elevation of cytokine levels in body fluids has been associated with numerous health conditions. The detection of these cytokine biomarkers at low concentrations may help clinicians diagnose diseases at an early stage. Here, we report an asymmetric geometry MoS2 diode-based biosensor for rapid, label-free, highly sensitive, and specific detection of tumor necrosis factor-α (TNF-α), a proinflammatory cytokine. This sensor is functionalized with TNF-α binding aptamers to detect TNF-α at concentrations as low as 10 fM, well below the typical concentrations found in healthy blood. Interactions between aptamers and TNF-α at the sensor surface induce a change in surface energy that alters the current-voltage rectification behavior of the MoS2 diode, which can be read out using a two-electrode configuration. The key advantages of this diode sensor are the simple fabrication process and electrical readout, and therefore, the potential to be applied in a rapid and easy-to-use, point-of-care, diagnostic tool.
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14
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Isolation and Characterization of Homologically Expressed Methanol Dehydrogenase from Methylorubrum extorquens AM1 for the Development of Bioelectrocatalytical Systems. Int J Mol Sci 2022; 23:ijms231810337. [PMID: 36142248 PMCID: PMC9499683 DOI: 10.3390/ijms231810337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/27/2022] [Accepted: 09/02/2022] [Indexed: 12/05/2022] Open
Abstract
(Ca2+)-dependent pyrroloquinolinequinone (PQQ)-dependent methanol dehydrogenase (MDH) (EC: 1.1.2.7) is one of the key enzymes of primary C1-compound metabolism in methylotrophy. PQQ-MDH is a promising catalyst for electrochemical biosensors and biofuel cells. However, the large-scale use of PQQ-MDH in bioelectrocatalysis is not possible due to the low yield of the native enzyme. Homologously overexpressed MDH was obtained from methylotrophic bacterium Methylorubrum extorquens AM1 by cloning the gene of only one subunit, mxaF. The His-tagged enzyme was easily purified by immobilized metal ion affinity chromatography (36% yield). A multimeric form (α6β6) of recombinant PQQ-MDH possessing enzymatic activity (0.54 U/mg) and high stability was demonstrated for the first time. pH-optimum of the purified protein was about 9–10; the enzyme was activated by ammonium ions. It had the highest affinity toward methanol (KM = 0.36 mM). The recombinant MDH was used for the fabrication of an amperometric biosensor. Its linear range for methanol concentrations was 0.002–0.1 mM, the detection limit was 0.7 µM. The properties of the invented biosensor are competitive to the analogs, meaning that this enzyme is a promising catalyst for industrial methanol biosensors. The developed simplified technology for PQQ-MDH production opens up new opportunities for the development of bioelectrocatalytic systems.
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15
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Mendes JP, Coelho LCC, Jorge PAS, Pereira CM. Differential Refractometric Biosensor for Reliable Human IgG Detection: Proof of Concept. BIOSENSORS 2022; 12:515. [PMID: 35884318 PMCID: PMC9312733 DOI: 10.3390/bios12070515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/08/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
A new sensing platform based on long-period fiber gratings (LPFGs) for direct, fast, and selective detection of human immunoglobulin G (IgG; Mw = 150 KDa) was developed and characterized. The transducer's high selectivity is based on the specific interaction of a molecularly imprinted polymer (MIPs) design for IgG detection. The sensing scheme is based on differential refractometric measurements, including a correction system based on a non-imprinted polymer (NIP)-coated LPFG, allowing reliable and more sensitive measurements, improving the rejection of false positives in around 30%. The molecular imprinted binding sites were performed on the surface of a LPFG with a sensitivity of about 130 nm/RIU and a FOM of 16 RIU-1. The low-cost and easy to build device was tested in a working range from 1 to 100 nmol/L, revealing a limit of detection (LOD) and a sensitivity of 0.25 nmol/L (0.037 µg/mL) and 0.057 nm.L/nmol, respectively. The sensor also successfully differentiates the target analyte from the other abundant elements that are present in the human blood plasma.
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Affiliation(s)
- João P. Mendes
- Centro de Investigação em Química UP (CIQUP)—Instituto de Ciências Moleculares (IMS), Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal; (J.P.M.); (C.M.P.)
- INESC TEC—Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciência, Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal;
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
| | - Luís C. C. Coelho
- INESC TEC—Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciência, Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal;
- Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
| | - Pedro A. S. Jorge
- INESC TEC—Instituto de Engenharia de Sistemas e Computadores, Tecnologia e Ciência, Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal;
- Departamento de Física e Astronomia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
| | - Carlos M. Pereira
- Centro de Investigação em Química UP (CIQUP)—Instituto de Ciências Moleculares (IMS), Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal; (J.P.M.); (C.M.P.)
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
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16
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Kim D, Jin B, Kim SA, Choi W, Shin S, Park J, Shim WB, Kim K, Lee JS. An Ultrasensitive Silicon-Based Electrolyte-Gated Transistor for the Detection of Peanut Allergens. BIOSENSORS 2022; 12:bios12010024. [PMID: 35049652 PMCID: PMC8773534 DOI: 10.3390/bios12010024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/31/2021] [Accepted: 12/31/2021] [Indexed: 11/28/2022]
Abstract
The highly sensitive detection of peanut allergens (PAs) using silicon-based electrolyte-gated transistors (Si-EGTs) was demonstrated. The Si-EGT was made using a top-down technique. The fabricated Si-EGT showed excellent intrinsic electrical characteristics, including a low threshold voltage of 0.7 V, low subthreshold swing of <70 mV/dec, and low gate leakage of <10 pA. Surface functionalization and immobilization of antibodies were performed for the selective detection of PAs. The voltage-related sensitivity (SV) showed a constant behavior from the subthreshold regime to the linear regime. The current-related sensitivity (SI) was high in the subthreshold regime and then significantly decreased as the drain current increased. The limit of detection (LOD) was calculated to be as low as 25 pg/mL based on SI characteristics, which is the lowest value reported to date in the literature for various sensor methodologies. The Si-EGT showed selective detection of PA through a non-specific control test. These results confirm that Si-EGT is a high-sensitivity and low-power biosensor for PA detection.
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Affiliation(s)
- Donghoon Kim
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Bo Jin
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
- Research and Development Department, Innovative General Electronic Sensor Technology Co., Itd. (IGEST), Pohang 37673, Korea
| | - Sol-A Kim
- Division of Applied Life Science, Graduate School, Gyeongsang National University, Jinju 52828, Korea;
| | - Wonyeong Choi
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Seonghwan Shin
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Jiwon Park
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
| | - Won-Bo Shim
- Department of Food Science and Technology, Gyeongsang National University, Jinju 52828, Korea;
| | - Kihyun Kim
- Division of Electronics Engineering, Jeonbuk National University, Jeonju 54896, Korea
- Future Semiconductor Convergence Technology Research Center and ICT Convergence Research Center, Jeonbuk National University, Jeonju 54896, Korea
- Correspondence: (K.K.); (J.-S.L.)
| | - Jeong-Soo Lee
- Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (D.K.); (B.J.); (W.C.); (S.S.); (J.P.)
- Correspondence: (K.K.); (J.-S.L.)
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17
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Arshavsky-Graham S, Ward SJ, Massad-Ivanir N, Scheper T, Weiss SM, Segal E. Porous Silicon-Based Aptasensors: Toward Cancer Protein Biomarker Detection. ACS MEASUREMENT SCIENCE AU 2021; 1:82-94. [PMID: 34693403 PMCID: PMC8532149 DOI: 10.1021/acsmeasuresciau.1c00019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Indexed: 05/09/2023]
Abstract
The anterior gradient homologue-2 (AGR2) protein is an attractive biomarker for various types of cancer. In pancreatic cancer, it is secreted to the pancreatic juice by premalignant lesions, which would be an ideal stage for diagnosis. Thus, designing assays for the sensitive detection of AGR2 would be highly valuable for the potential early diagnosis of pancreatic and other types of cancer. Herein, we present a biosensor for label-free AGR2 detection and investigate approaches for enhancing the aptasensor sensitivity by accelerating the target mass transfer rate and reducing the system noise. The biosensor is based on a nanostructured porous silicon thin film that is decorated with anti-AGR2 aptamers, where real-time monitoring of the reflectance changes enables the detection and quantification of AGR2, as well as the study of the diffusion and target-aptamer binding kinetics. The aptasensor is highly selective for AGR2 and can detect the protein in simulated pancreatic juice, where its concentration is outnumbered by orders of magnitude by numerous proteins. The aptasensor's analytical performance is characterized with a linear detection range of 0.05-2 mg mL-1, an apparent dissociation constant of 21 ± 1 μM, and a limit of detection of 9.2 μg mL-1 (0.2 μM), which is attributed to mass transfer limitations. To improve the latter, we applied different strategies to increase the diffusion flux to and within the nanostructure, such as the application of isotachophoresis for the preconcentration of AGR2 on the aptasensor, mixing, or integration with microchannels. By combining these approaches with a new signal processing technique that employs Morlet wavelet filtering and phase analysis, we achieve a limit of detection of 15 nM without compromising the biosensor's selectivity and specificity.
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Affiliation(s)
- Sofia Arshavsky-Graham
- Department
of Biotechnology and Food Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
- Institute
of Technical Chemistry, Leibniz Universität
Hannover, Callinstraße 5, 30167 Hanover, Germany
| | - Simon J. Ward
- Department
of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Naama Massad-Ivanir
- Department
of Biotechnology and Food Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
| | - Thomas Scheper
- Institute
of Technical Chemistry, Leibniz Universität
Hannover, Callinstraße 5, 30167 Hanover, Germany
| | - Sharon M. Weiss
- Department
of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ester Segal
- Department
of Biotechnology and Food Engineering, Technion—Israel
Institute of Technology, Haifa 3200003, Israel
- The
Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology, Haifa 3200003, Israel
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18
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Mascret A, Mouhsine H, Attia G, Cabrera D, Benchekroun M, Gizzi P, Zerrouki C, Fourati N, Zagury JF, Veitía MSI, Port M. New contributions to the drug profile of TNFα inhibitor SPD304: Affinity, selectivity and ADMET considerations. Eur J Pharmacol 2021; 907:174285. [PMID: 34181962 DOI: 10.1016/j.ejphar.2021.174285] [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: 03/13/2021] [Revised: 06/11/2021] [Accepted: 06/22/2021] [Indexed: 11/24/2022]
Abstract
Tumor necrosis factor alpha (TNFα) is a relevant clinical target for the treatment of chronic inflammatory diseases. Currently, only few small molecules are known as direct inhibitors of TNFα. To date, none of these molecules has shown both an efficient activity and a low toxicity to be considered for clinical trials. The SPD304 is considered as a reference of direct inhibitors of TNFα because of its well demonstrated mechanism (He et al., 2005). Herein, we provide new insights regarding the drug profile, selectivity and absorption, distribution, metabolism, excretion and toxicity (ADMET) considerations of SPD304 to evaluate its potential as a hit for the structure-based design of novel TNFα inhibitors. ELISA experiments confirmed the inhibition of TNFα/TNF receptor 1 binding (IC50 = 12 μM). Cellular-based assays highlighted the cytotoxicity of SPD304, as well as its ability to inhibit TNFα signaling pathways at non-cytotoxic concentrations. A surface acoustic wave (SAW) experiment highlighted only one binding site with a dissociation constant of 6.1 ± 4.7 nM. SPD304 inhibited the binding of the cytokines like interleukins (IL)-4 and IL-13 to their receptors and showed no direct inhibition on proteins involved in the TNFα pathway. Finally, the thermodynamic solubility and Caco-2 cells permeability of SPD304 were experimentally evaluated and ADMET in silico predictions are also discussed. The physicochemical, pharmacological and ADMET studies of SPD304 have shown that is not an ideal hit for a drug optimization program based on its chemical structure.
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Affiliation(s)
- Aïda Mascret
- Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 rue Conté, 75003, HESAM Université, Paris, France; Peptinov, Pépinière Paris Santé Cochin, Hôpital Cochin, 29 rue du Faubourg, Saint Jacques, Paris, 75014, France
| | - Hadley Mouhsine
- Peptinov, Pépinière Paris Santé Cochin, Hôpital Cochin, 29 rue du Faubourg, Saint Jacques, Paris, 75014, France
| | - Ghada Attia
- Laboratoire SATIE, UMR CNRS 8029, Conservatoire National des Arts et Métiers (Cnam), 292 rue Saint Martin, 75003, HESAM Université, Paris, France
| | - Damien Cabrera
- Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 rue Conté, 75003, HESAM Université, Paris, France
| | - Mohamed Benchekroun
- Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 rue Conté, 75003, HESAM Université, Paris, France
| | - Patrick Gizzi
- PCBIS, UMS3286 CNRS - Université de Strasbourg, Boulevard Sébastien Brant, 67401, Illkirch Cedex, France
| | - Chouki Zerrouki
- Laboratoire SATIE, UMR CNRS 8029, Conservatoire National des Arts et Métiers (Cnam), 292 rue Saint Martin, 75003, HESAM Université, Paris, France
| | - Najla Fourati
- Laboratoire SATIE, UMR CNRS 8029, Conservatoire National des Arts et Métiers (Cnam), 292 rue Saint Martin, 75003, HESAM Université, Paris, France
| | - Jean-François Zagury
- Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 rue Conté, 75003, HESAM Université, Paris, France
| | - Maité Sylla-Iyarreta Veitía
- Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 rue Conté, 75003, HESAM Université, Paris, France.
| | - Marc Port
- Laboratoire Génomique, Bioinformatique et Chimie Moléculaire (EA 7528), Conservatoire National des Arts et Métiers (Cnam), 2 rue Conté, 75003, HESAM Université, Paris, France.
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19
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Bhasin A, Choi EJ, Drago NP, Garrido JE, Sanders EC, Shin J, Andoni I, Kim DH, Fang L, Weiss GA, Penner RM. Enhancing the Sensitivity of the Virus BioResistor by Overoxidation: Detecting IgG Antibodies. Anal Chem 2021; 93:11259-11267. [PMID: 34347442 DOI: 10.1021/acs.analchem.1c02191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Virus BioResistor (VBR) is a biosensor capable of rapid and sensitive detection of small protein disease markers using a simple dip-and-read modality. For example, the bladder cancer-associated protein DJ-1 (22 kDa) can be detected in human urine within 1.0 min with a limit of detection (LOD) of 10 pM. The VBR uses engineered virus particles as receptors to recognize and selectively bind the protein of interest. These virus particles are entrained in a conductive poly(3,4-ethylenedioxythiophene) or PEDOT channel. The electrical impedance of the channel increases when the target protein is bound by the virus particles. But VBRs exhibit a sensitivity that is inversely related to the molecular weight of the protein target. Thus, large proteins, such as IgG antibodies (150 kDa), can be undetectable even at high concentrations. We demonstrate that the electrochemical overoxidation of the VBR's PEDOT channel increases its electrical impedance, conferring enhanced sensitivity for both small and large proteins. Overoxidation makes possible the detection of two antibodies, undetectable at a normal VBR, with a limit of detection of 40 ng/mL (250 pM), and a dynamic range for quantitation extending to 600 ng/mL.
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Affiliation(s)
- Apurva Bhasin
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Eric J Choi
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Nicholas P Drago
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Jason E Garrido
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Emily C Sanders
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Jihoon Shin
- School of Chemical Engineering, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Ilektra Andoni
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Dong-Hwan Kim
- School of Chemical Engineering, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do 16419, South Korea
| | - Lu Fang
- Department of Automation, Hangzhou Dianzi University, Xiasha, Hangzhou 310018, China
| | - Gregory A Weiss
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States.,Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, California 92697, United States.,Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Reginald M Penner
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
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20
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Antunez EE, Mahon CS, Tong Z, Voelcker NH, Müllner M. A Regenerable Biosensing Platform for Bacterial Toxins. Biomacromolecules 2020; 22:441-453. [PMID: 33320642 DOI: 10.1021/acs.biomac.0c01318] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Waterborne diarrheal diseases such as travelers' diarrhea and cholera remain a threat to public health in many countries. Rapid diagnosis of an infectious disease is critical in preventing the escalation of a disease outbreak into an epidemic. Many of the diagnostic tools for infectious diseases employed today are time-consuming and require specialized laboratory settings and trained personnel. There is hence a pressing need for fit-for-purpose point-of-care diagnostic tools with emphasis in sensitivity, specificity, portability, and low cost. We report work toward thermally reversible biosensors for detection of the carbohydrate-binding domain of the Escherichia coli heat-labile enterotoxin (LTB), a toxin produced by enterotoxigenic E. coli strains, which causes travelers' diarrhea. The biosensing platform is a hybrid of two materials, combining the optical properties of porous silicon (pSi) interferometric transducers and a thermoresponsive multivalent glycopolymer, to enable recognition of LTB. Analytical performance of our biosensors allows us to detect, using a label-free format, sub-micromolar concentrations of LTB in solution as low as 0.135 μM. Furthermore, our platform shows a temperature-mediated "catch-and-release" behavior, an exciting feature with potential for selective protein capture, multiple readouts, and regeneration of the sensor over consecutive cycles of use.
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Affiliation(s)
- E Eduardo Antunez
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
| | - Clare S Mahon
- Department of Chemistry, Durham University, Durham DH1 3LE, U.K
| | - Ziqiu Tong
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Nicolas H Voelcker
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Clayton, Victoria 3168, Australia
| | - Markus Müllner
- Key Centre for Polymers and Colloids, School of Chemistry, The University of Sydney, Sydney 2006, New South Wales, Australia.,The University of Sydney Nano Institute (Sydney Nano), Sydney 2006, New South Wales, Australia
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21
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Aggas JR, Walther BK, Abasi S, Kotanen CN, Karunwi O, Wilson AM, Guiseppi-Elie A. On the intersection of molecular bioelectronics and biosensors: 20 Years of C3B. Biosens Bioelectron 2020; 176:112889. [PMID: 33358581 DOI: 10.1016/j.bios.2020.112889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/16/2020] [Accepted: 12/02/2020] [Indexed: 12/11/2022]
Abstract
Formed in 2000 at Virginia Commonwealth University, the Center for Bioelectronics, Biosensors and Biochips (C3B®) has subsequently been located at Clemson University and at Texas A&M University. Established as an industry-university collaborative center of excellence, the C3B has contributed new knowledge and technology in the areas of i) molecular bioelectronics, ii) responsive polymers, iii) multiplexed biosensor systems, and iv) bioelectronic biosensors. Noteworthy contributions in these areas include i) being the first to report direct electron transfer of oxidoreductase enzymes enabled by single walled carbon nanotubes and colloidal clays, ii) the molecular level integration of inherently conductive polymers with bioactive hydrogels using bi-functional monomers such as poly(pyrrole-co-3-pyrrolylbutyrate-conj-aminoethylmethacrylate) [PyBA-conj-AEMA] and 3-(1-ethyl methacryloylate)aniline to yield hetero-ladder electroconductive hydrogels, iii) the development of a multi-analyte physiological status monitoring biochip, and iv) the development of a bioanalytical Wien-bridge oscillator for the fused measurement to lactate and glucose. The present review takes a critical look of these contributions over the past 20 years and offers some perspective on the future of bioelectronics-based biosensors and systems. Particular attention is given to multiplexed biosensor systems and data fusion for rapid decision making.
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Affiliation(s)
- John R Aggas
- Center for Bioelectronics, Biosensors and Biochips (C3B®), Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA.
| | - Brandon K Walther
- Center for Bioelectronics, Biosensors and Biochips (C3B®), Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX, 77030, USA.
| | - Sara Abasi
- Center for Bioelectronics, Biosensors and Biochips (C3B®), Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA.
| | - Christian N Kotanen
- Center for Bioelectronics, Biosensors and Biochips (C3B®), Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA; Walter Reed National Military Medical Center, 8901 Wisconsin Ave, Bethesda, MD, 20814, USA.
| | - Olukayode Karunwi
- Center for Bioelectronics, Biosensors and Biochips (C3B®), Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Physics, Anderson University, 316 Boulevard, Anderson, SC, 29621, USA.
| | - Ann M Wilson
- Center for Bioelectronics, Biosensors and Biochips (C3B®), Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Chemistry, The University of the West Indies, St. Augustine, Trinidad and Tobago; ABTECH Scientific, Inc., Biotechnology Research Park, 800 East Leigh Street, Richmond, VA, 23219, USA.
| | - Anthony Guiseppi-Elie
- Center for Bioelectronics, Biosensors and Biochips (C3B®), Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Cardiovascular Sciences, Houston Methodist Institute for Academic Medicine, Houston Methodist Research Institute, 6670 Bertner Ave., Houston, TX, 77030, USA; ABTECH Scientific, Inc., Biotechnology Research Park, 800 East Leigh Street, Richmond, VA, 23219, USA.
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22
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Funari R, Chu KY, Shen AQ. Detection of antibodies against SARS-CoV-2 spike protein by gold nanospikes in an opto-microfluidic chip. Biosens Bioelectron 2020; 169:112578. [PMID: 32911317 PMCID: PMC7467868 DOI: 10.1016/j.bios.2020.112578] [Citation(s) in RCA: 169] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 12/16/2022]
Abstract
The ongoing global pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has led to active research in its associated diagnostics and medical treatments. While quantitative reverse transcription polymerase chain reaction (qRT-PCR) is the most reliable method to detect viral genes of SARS-CoV-2, serological tests for specific antiviral antibodies are also important as they identify false negative qRT-PCR responses, track how effectively the patient's immune system is fighting the infection, and are potentially helpful for plasma transfusion therapies. In this work, based on the principle of localized surface plasmon resonance (LSPR), we develop an opto-microfluidic sensing platform with gold nanospikes, fabricated by electrodeposition, to detect the presence and amount of antibodies specific to the SARS-CoV-2 spike protein in 1μL of human plasma diluted in 1mL of buffer solution, within ∼30min. The target antibody concentration can be correlated with the LSPR wavelength peak shift of gold nanospikes caused by the local refractive index change due to the antigen-antibody binding. This label-free microfluidic platform achieves a limit of detection of ∼0.08ng/mL (∼0.5pM), falling under the clinical relevant concentration range. We demonstrate that our opto-microfluidic platform offers a promising point-of-care testing tool to complement standard serological assays and make SARS-CoV-2 quantitative diagnostics easier, cheaper, and faster.
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Affiliation(s)
- Riccardo Funari
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan.
| | - Kang-Yu Chu
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan
| | - Amy Q Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Okinawa, 904-0495, Japan.
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23
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Arshavsky Graham S, Boyko E, Salama R, Segal E. Mass Transfer Limitations of Porous Silicon-Based Biosensors for Protein Detection. ACS Sens 2020; 5:3058-3069. [PMID: 32896130 PMCID: PMC7589614 DOI: 10.1021/acssensors.0c00670] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
![]()
Porous
silicon (PSi) thin films have been widely studied for biosensing
applications, enabling label-free optical detection of numerous targets.
The large surface area of these biosensors has been commonly recognized
as one of the main advantages of the PSi nanostructure. However, in
practice, without application of signal amplification strategies,
PSi-based biosensors suffer from limited sensitivity, compared to
planar counterparts. Using a theoretical model, which describes the
complex mass transport phenomena and reaction kinetics in these porous
nanomaterials, we reveal that the interrelated effect of bulk and
hindered diffusion is the main limiting factor of PSi-based biosensors.
Thus, without significantly accelerating the mass transport to and
within the nanostructure, the target capture performance of these
biosensors would be comparable, regardless of the nature of the capture
probe–target pair. We use our model to investigate the effect
of various structural and biosensor characteristics on the capture
performance of such biosensors and suggest rules of thumb for their
optimization.
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Affiliation(s)
- Sofia Arshavsky Graham
- Department of Biotechnology and Food Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
- Institute of Technical Chemistry, Leibniz Universität Hannover, Callinstr. 5, Hanover 30167, Germany
| | - Evgeniy Boyko
- Department of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
| | - Rachel Salama
- Department of Biotechnology and Food Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
| | - Ester Segal
- Department of Biotechnology and Food Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
- The Russell Berrie Nanotechnology Institute, Technion—Israel Institute of Technology, Haifa 3200003, Israel
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24
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Cancelliere R, Zurlo F, Micheli L, Melino S. Vegetable waste scaffolds for 3D-stem cell proliferating systems and low cost biosensors. Talanta 2020; 223:121671. [PMID: 33303135 DOI: 10.1016/j.talanta.2020.121671] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/10/2020] [Accepted: 09/14/2020] [Indexed: 01/05/2023]
Abstract
Vegetable wastes represent an inexpensive and sustainable source of valuable bioproducts for several applications. Natural micro-porous and fibrous materials can be obtained from a very cheap and abundant cellulosic bio-waste. Here we demonstrated that vegetable waste derivatives can be suitable as scaffolds for biosensors and 3D cell growth. Many studies have been addressed to fabricate biocompatible 3D scaffolds for mammalian stem cells cultures and develop novel systems able to reproduce the complexity of the in vivo microenvironment. Many of these products are proprietary, expensive or require chemical synthesis. The recycling and revaluation of vegetable derived tissues to fabricate scaffolds for analytical biosensors 3D stem cell cultures platforms may represent a very low-cost approach for toxicological and environmental analyses. In this approach, potential applications of vegetable-derived tissue for biosensing and 3D stem cell cultures were investigated. Micro-structured scaffolds from stalk of broccoli, named BrcS, were either functionalized for production of enzymatic 3D-biosensors or preconditioned to be used them as 3D-scaffolds for human mesenchymal stem cells cultures. The conditions to fabricate 3D-biosensors and scaffolds for cell growth were here optimized studying all analytical parameters and demonstrating the feasibility to combine these two properties for an innovative solution to ennoble vegetable wastes.
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Affiliation(s)
- Rocco Cancelliere
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133, Rome, Italy
| | - Francesca Zurlo
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133, Rome, Italy
| | - Laura Micheli
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133, Rome, Italy.
| | - Sonia Melino
- Department of Chemical Science and Technologies, University of Rome "Tor Vergata", Via Della Ricerca Scientifica 1, 00133, Rome, Italy; CIMER Center for Regenerative Medicine, University of Rome Tor Vergata, Via Montpellier 1, 0166, Rome, Italy.
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25
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Simulation/Experiment Confrontation, an Efficient Approach for Sensitive SAW Sensors Design. SENSORS 2020; 20:s20174994. [PMID: 32899233 PMCID: PMC7506909 DOI: 10.3390/s20174994] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/31/2020] [Accepted: 08/31/2020] [Indexed: 02/08/2023]
Abstract
Sensitivity is one of the most important parameters to put in the foreground in all sensing applications. Its increase is therefore an ongoing challenge, particularly for surface acoustic wave (SAW) sensors. Herein, finite element method (FEM) simulation using COMSOL Multiphysics software is first used to simulate the physical and electrical properties of SAW delay line. Results indicate that 2D configuration permits to accurately obtain all pertinent parameters, as in 3D simulation, with very substantial time saving. A good agreement between calculation and experiment, in terms of transfer functions (S21 spectra), was also shown to evaluate the dependence of the SAW sensors sensitivity on the operating frequency; 2D simulations have been conducted on 104 MHz and 208 MHz delay lines, coated with a polyisobutylene (PIB) as sensitive layer to dichloromethane (DCM). A fourfold increase in sensitivity was obtained by doubling frequency. Both sensors were then realized and tested as chem-sensors to detect zinc ions in liquid media. 9-{[4-({[4-(9anthrylmethoxy)phenyl]sulfanyl} methyl)]methyl] anthracene (TDP-AN) was selected as the sensing layer. Results show a comparable response curves for both designed sensors, in terms of limit of detection and dissociation constants Kd values. On the other hand, experimental sensitivity values were of the order of [7.0 ± 2.8] × 108 [°/M] and [16.0 ± 7.6] × 108 [°/M] for 104 MHz and 208 MHz sensors, respectively, confirming that the sensitivity increases with frequency.
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26
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Macwan I, Aphale A, Bhagvath P, Prasad S, Patra P. Detection of Cardiovascular CRP Protein Biomarker Using a Novel Nanofibrous Substrate. BIOSENSORS 2020; 10:E72. [PMID: 32599804 PMCID: PMC7345592 DOI: 10.3390/bios10060072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
It is known that different diseases have characteristic biomarkers that are secreted very early on, even before the symptoms have developed. Before any kind of therapeutic approach can be used, it is necessary that such biomarkers be detected at a minimum concentration in the bodily fluids. Here, we report the fabrication of an interdigitated sensing device integrated with polyvinyl alcohol (PVA) nanofibers and carbon nanotubes (CNT) for the detection of an inflammatory biomarker, C-reactive protein (CRP). The limit of detection (LOD) was achieved in a range of 100 ng mL-1 and 1 fg mL-1 in both phosphate buffered saline (PBS) and human serum (hs). Furthermore, a significant change in the electrochemical impedance from 45% to 70% (hs) and 38% to 60% (PBS) over the loading range of CRP was achieved. The finite element analysis indicates that a non-redox charge transduction at the solid/liquid interface on the electrode surface is responsible for the enhanced sensitivity. Furthermore, the fabricated biosensor consists of a large electro-active surface area, along with better charge transfer characteristics that enabled improved specific binding with CRP. This was determined both experimentally and from the simulated electrochemical impedance of the PVA nanofiber patterned gold electrode.
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Affiliation(s)
- Isaac Macwan
- Department of Electrical and Bioengineering, Fairfield University, Fairfield, CT 06824, USA
| | - Ashish Aphale
- Department of Biomedical Engineering, University of Bridgeport, Bridgeport, CT 06604, USA; (A.A.); (P.P.)
| | - Prathamesh Bhagvath
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO 63103, USA;
| | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA;
| | - Prabir Patra
- Department of Biomedical Engineering, University of Bridgeport, Bridgeport, CT 06604, USA; (A.A.); (P.P.)
- Department of Mechanical Engineering, University of Bridgeport, Bridgeport, CT 06604, USA
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27
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Arshavsky-Graham S, Urmann K, Salama R, Massad-Ivanir N, Walter JG, Scheper T, Segal E. Aptamers vs. antibodies as capture probes in optical porous silicon biosensors. Analyst 2020; 145:4991-5003. [PMID: 32519701 DOI: 10.1039/d0an00178c] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Over the past decade aptamers have emerged as a promising class of bioreceptors for biosensing applications with significant advantages over conventional antibodies. However, experimental studies comparing aptasensors and immunosensors, under equivalent conditions, are limited and the results are inconclusive, in terms of benefits and limitations of each bioreceptor type. In the present work, the performance of aptamer and antibody bioreceptors for the detection of a his-tagged protein, used as a model target, is compared. The bioreceptors are immobilized onto a nanostructured porous silicon (PSi) thin film, used as the optical transducer, and the target protein is detected in a real-time and label-free format by reflective interferometric Fourier transform spectroscopy. For the antibodies, random-oriented immobilization onto the PSi nanostructure results in a poor biosensing performance. Contrary, Fc-oriented immobilization of the antibodies shows a similar biosensing performance to that exhibited by the aptamer-based biosensor, in terms of binding rate, dynamic detection range, limit of detection and selectivity. The aptasensor outperforms in terms of its reusability and storability, while the immunosensor could not be regenerated for subsequent experiments.
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Affiliation(s)
- Sofia Arshavsky-Graham
- Institute of Technical Chemistry, Leibniz University of Hannover, Callinstr. 5, 30167 Hannover, Germany.
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28
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A Portable Smartphone-linked Device for Direct, Rapid and Chemical-Free Hemoglobin Assay. Sci Rep 2020; 10:8606. [PMID: 32451400 PMCID: PMC7248091 DOI: 10.1038/s41598-020-65607-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 05/06/2020] [Indexed: 12/13/2022] Open
Abstract
We describe the development and clinical evaluation of an automated smartphone-linked sensor capable of chemical-free, quantitative measurement of hemoglobin concentration ([Hb]) in whole blood samples. We have demonstrated that our sensor could analyze an unprocessed blood specimen with a mean processing time of <8 s and provided the [Hb] results with ~99% accuracy against a reference hematology analyzer with coefficient of variation (CV) of 1.21% measured at [Hb] = 11.2 g/dL. Its diagnostic capability for anemia was evaluated by measuring [Hb] of 142 clinical blood specimens and comparing the results with those from an automated hematology analyzer (ADVIA 2120i, Siemens AG, Germany) and a portable hemoglobinomteter (Hb201+, Hemocue, Sweden). The sensor yielded comparable sensitivities and specificities of 87.50% and 100.00% for males, and 94.44% and 100.00% for females, respectively, for anemic detection. The results suggested that our optical sensor based on the intrinsic photothermal response of Hb molecules and advances in consumer electronics, particularly smartphone capabilities, enables a direct, chemical-free [Hb] assay accessible to people in both developed and developing countries.
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29
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Nguyen D, Behrens DM, Sen S, Najdahmadi A, Pham JN, Speciale G, Lawrence MM, Majumdar S, Weiss GA, Botvinick EL. Photostable and Proteolysis-Resistant Förster Resonance Energy Transfer-Based Calcium Biosensor. Anal Chem 2020; 92:7683-7689. [PMID: 32352281 DOI: 10.1021/acs.analchem.0c00573] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Molecular sensors from protein engineering offer new methods to sensitively bind to and detect target analytes for a wide range of applications. For example, these sensors can be integrated into probes for implantation, and then yield new and valuable physiological information. Here, a new Förster resonance energy transfer (FRET)-based sensor is integrated with an optical fiber to yield a device measuring free Ca2+. This membrane encapsulated optical fiber (MEOF) device is composed of a sensor matrix that fills poly(tetrafluoroethylene) (PTFE) with an engineered troponin C (TnC) protein fused to a pair of FRET fluorophores. The FRET efficiency is modulated upon Ca2+ ion binding. The probe further comprises a second, size-excluding filter membrane that is synthesized by filling the pores of a PTFE matrix with a poly(ethylene glycol) dimethacrylate (PEGDMA) hydrogel; this design ensures protection from circulating proteases and the foreign body response. The two membranes are stacked and placed on a thin, silica optical fiber for optical excitation and detection. Results show the biosensor responds to changes in Ca2+ concentration within minutes with a sensitivity ranging from 0.01 to 10 mM Ca2+, allowing discrimination of hyper- and hypocalcemia. Furthermore, the system reversibly binds Ca2+ to allow continuous monitoring. This work paves the way for the use of engineered structure-switching proteins for continuous optical monitoring in a large number of applications.
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Affiliation(s)
- Dat Nguyen
- Department of Biomedical Engineering, University of California, Irvine, California 92697-2730, United States
| | - Danielle M Behrens
- Department of Biomedical Engineering, University of California, Irvine, California 92697-2730, United States
| | - Sanjana Sen
- Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92697-3900, United States
| | - Avid Najdahmadi
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, California 92612-1475, United States
| | - Jessica N Pham
- Department of Chemistry, University of California, Irvine, California 92697-2015, United States
| | - Gaetano Speciale
- Department of Chemistry, University of California, Irvine, California 92697-2015, United States
| | - Micah M Lawrence
- Department of Biomedical Engineering, University of California, Irvine, California 92697-2730, United States
| | - Sudipta Majumdar
- Department of Chemistry, University of California, Irvine, California 92697-2015, United States
| | - Gregory A Weiss
- Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92697-3900, United States.,Department of Chemistry, University of California, Irvine, California 92697-2015, United States.,Department of Pharmaceutical Sciences, University of California, Irvine, California 92697-4625, United States
| | - Elliot L Botvinick
- Department of Biomedical Engineering, University of California, Irvine, California 92697-2730, United States.,Beckman Laser Institute and Medical Clinic, University of California, Irvine, California 92612-1475, United States.,Department of Surgery, University of California, Irvine, California 92697-2730, United States
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30
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Bhasin A, Sanders EC, Ziegler JM, Briggs JS, Drago NP, Attar AM, Santos AM, True MY, Ogata AF, Yoon DV, Majumdar S, Wheat AJ, Patterson SV, Weiss GA, Penner RM. Virus Bioresistor (VBR) for Detection of Bladder Cancer Marker DJ-1 in Urine at 10 pM in One Minute. Anal Chem 2020; 92:6654-6666. [PMID: 32252524 PMCID: PMC7266010 DOI: 10.1021/acs.analchem.0c00534] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
DJ-1, a 20.7 kDa protein, is overexpressed in people who have bladder cancer (BC). Its elevated concentration in urine allows it to serve as a marker for BC. However, no biosensor for the detection of DJ-1 has been demonstrated. Here, we describe a virus bioresistor (VBR) capable of detecting DJ-1 in urine at a concentration of 10 pM in 1 min. The VBR consists of a pair of millimeter-scale gold electrodes that measure the electrical impedance of an ultrathin (≈ 150-200 nm), two-layer polymeric channel. The top layer of this channel (90-105 nm in thickness) consists of an electrodeposited virus-PEDOT (PEDOT is poly(3,4-ethylenedioxythiophene)) composite containing embedded M13 virus particles that are engineered to recognize and bind to the target protein of interest, DJ-1. The bottom layer consists of spin-coated PEDOT-PSS (poly(styrenesulfonate)). Together, these two layers constitute a current divider. We demonstrate here that reducing the thickness of the bottom PEDOT-PSS layer increases its resistance and concentrates the resistance drop of the channel in the top virus-PEDOT layer, thereby increasing the sensitivity of the VBR and enabling the detection of DJ-1. Large signal amplitudes coupled with the inherent simplicity of the VBR sensor design result in high signal-to-noise (S/N > 100) and excellent sensor-to-sensor reproducibility characterized by coefficients of variation in the range of 3-7% across the DJ-1 binding curve down to a concentration of 30 pM, near the 10 pM limit of detection (LOD), encompassing four orders of magnitude in concentration.
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Affiliation(s)
- Apurva Bhasin
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Emily C Sanders
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Joshua M Ziegler
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Jeffrey S Briggs
- PhageTech Inc., 5 Mason, Suite 170, Irvine, California 92618, United States
| | - Nicholas P Drago
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Aisha M Attar
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Alicia M Santos
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Marie Y True
- PhageTech Inc., 5 Mason, Suite 170, Irvine, California 92618, United States
| | - Alana F Ogata
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Debora V Yoon
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Sudipta Majumdar
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Andrew J Wheat
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Shae V Patterson
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
- PhageTech Inc., 5 Mason, Suite 170, Irvine, California 92618, United States
| | - Gregory A Weiss
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
- PhageTech Inc., 5 Mason, Suite 170, Irvine, California 92618, United States
- Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, California 92697, United States
- Department of Molecular Biology & Biochemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Reginald M Penner
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
- PhageTech Inc., 5 Mason, Suite 170, Irvine, California 92618, United States
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Ford R, Devereux SJ, Quinn SJ, O'Neill RD. Carbon nanohorn modified platinum electrodes for improved immobilisation of enzyme in the design of glutamate biosensors. Analyst 2019; 144:5299-5307. [PMID: 31373591 DOI: 10.1039/c9an01085h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Electrochemical enzymatic biosensors are the subject of research due to their potential for in vivo monitoring of glutamate, which is a key neurotransmitter whose concentration is related to healthy brain function. This study reports the use of biocompatible oxidised carbon nanohorns (o-CNH) with a high surface area, to enhance the immobilization of glutamate oxidase (GluOx) for improved biosensor performance. Two families of biosensors were designed to interact with the anionic GluOx. Family-1 consists of covalently functionalised o-CNH possessing hydrazide (HYZ) and amine (PEG-NH2) terminated surfaces and Family-2 comprised non-covalently functionalised o-CNH with different loadings of polyethyleneimine (PEI) to form a cationic hybrid. Amperometric detection of H2O2 formed by enzymatic oxidation of glutamate revealed a good performance from all designs with the most improved performance by the PEI hybrid systems. The best response was from a o-CNH : PEI ratio of 1 : 10 mg mL-1, which yielded a glutamate calibration plateau, JMAX, of 55 ± 9 μA cm-2 and sensitivity of 111 ± 34 μA mM-1 cm-2. The low KM of 0.31 ± 0.05 mM indicated the retention of the enzyme function, and a limit of detection of 0.02 ± 0.004 μM and a response time of 0.88 ± 0.13 s was determined. The results demonstrate the high sensitivity of these biosensors and their potential for future use for the detection of glutamate in vivo.
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Affiliation(s)
- Rochelle Ford
- School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland.
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Cancelliere R, Carbone K, Pagano M, Cacciotti I, Micheli L. Biochar from Brewers' Spent Grain: A Green and Low-Cost Smart Material to Modify Screen-Printed Electrodes. BIOSENSORS-BASEL 2019; 9:bios9040139. [PMID: 31816955 PMCID: PMC6956167 DOI: 10.3390/bios9040139] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/23/2019] [Accepted: 11/27/2019] [Indexed: 11/23/2022]
Abstract
In the present study, biochar from brewers’ spent grain was used, for the first time, to develop screen-printed electrodes. After having investigated the dispersion behaviour of biochar in different organic solvents, a biochar-based screen-printed electrode was prepared with the drop-casting technique. In order to understand the electrochemical potentiality and performances of the biochar/sensor tool, different electroactive species, i.e., ferricyanide, benzoquinone, epinephrine, ascorbic, and uric acids, were used. The results were compared with those of the same electrodes that were modified with commercial graphene, confirming that the proposed electrode showed improved electrochemical behaviour in terms of resolution, peak-to-peak separation, current intensity, and resistance to charge transfer. Furthermore, a tyrosinase biosensor was developed by direct immobilisation of this enzyme on the biochar/screen printed electrode, as an example of the potential of biochar for disposable biosensor development. The efficiently occurred immobilisation of the biochar on the screen printed electrode’s (SPE’s) surface was demonstrated by the observation of the working electrode with a scanning electron microscope. The detection was performed by measuring the current due to the reduction of the corresponding quinone at low potential, equal to −0.310 V for epinephrine. The experimental conditions for the tyrosinase immobilization and the analytical parameters, such as applied potential and pH of buffer, were studied and optimized. Under these conditions, the electrochemical biosensors were characterized. A linear working range of epinephrine was obtained from 0.05 up to 0.5 mM. The detection limit was 2 × 10−4 mM for the biosensor.
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Affiliation(s)
- Rocco Cancelliere
- Department of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy;
| | - Katya Carbone
- CREA, Research Centre for Olive, Citrus and Tree Fruit, Via di Fioranello 52, 00134 Rome, Italy;
| | - Mauro Pagano
- CREA Research Centre for Engineering and Agro-Food Processing, Via Della Pascolare 16, Monterotondo, 00015 Rome, Italy;
| | - Ilaria Cacciotti
- Engineering Department, University of Rome “Niccolò Cusano”, Via Don Carlo Gnocchi 3, 00166 Rome, Italy;
| | - Laura Micheli
- Department of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy;
- Correspondence:
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Funari R, Ripa R, Söderström B, Skoglund U, Shen AQ. Detecting Gold Biomineralization by Delftia acidovorans Biofilms on a Quartz Crystal Microbalance. ACS Sens 2019; 4:3023-3033. [PMID: 31631654 DOI: 10.1021/acssensors.9b01580] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The extensive use of gold in sensing, diagnostics, and electronics has led to major concerns in solid waste management since gold and other heavy metals are nonbiodegradable and can easily accumulate in the environment. Moreover, gold ions are extremely reactive and potentially harmful for humans. Thus, there is an urgent need to develop reliable methodologies to detect and possibly neutralize ionic gold in aqueous solutions and industrial wastes. In this work, by using complementary measurement techniques such as quartz crystal microbalance (QCM), atomic force microscopy, crystal violet staining, and optical microscopy, we investigate a promising biologically induced gold biomineralization process accomplished by biofilms of bacterium Delftia acidovorans. When stressed by Au3+ ions, D. acidovorans is able to neutralize toxic soluble gold by excreting a nonribosomal peptide, which forms extracellular gold nanonuggets via complexation with metal ions. Specifically, QCM, a surface-sensitive transducer, is employed to quantify the production of these gold complexes directly on the D. acidovorans biofilm in real time. Detailed kinetics obtained by QCM captures the condition for maximized biomineralization yield and offers new insights underlying the biomineralization process. To the best of our knowledge, this is the first study providing an extensive characterization of the gold biomineralization process by a model bacterial biofilm. We also demonstrate QCM as a cheap, user-friendly sensing platform and alternative to standard analytical techniques for studies requiring high-resolution quantitative details, which offers promising opportunities in heavy-metal sensing, gold recovery, and industrial waste treatment.
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Cennamo N, Zeni L, Ricca E, Isticato R, Marzullo VM, Capo A, Staiano M, D’Auria S, Varriale A. Detection of naphthalene in sea-water by a label-free plasmonic optical fiber biosensor. Talanta 2019; 194:289-297. [DOI: 10.1016/j.talanta.2018.10.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 10/10/2018] [Accepted: 10/15/2018] [Indexed: 10/28/2022]
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Boehm R, Donovan J, Sheth D, Durfor A, Roberts J, Isayeva I. In Vitro Sugar Interference Testing With Amperometric Glucose Oxidase Sensors. J Diabetes Sci Technol 2019; 13:82-95. [PMID: 30073864 PMCID: PMC6313278 DOI: 10.1177/1932296818791538] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Electrochemical enzymatic glucose sensors are intended to measure blood or interstitial fluid glucose concentrations. One class of these glucose sensors are continuous glucose monitors (CGMs), indicated for tracking and trending of glucose concentrations in interstitial fluid and as an adjunct to blood glucose testing. Currently approved CGMs employ a glucose oxidase (GOx) electrochemical detection scheme. Potential interfering agents can impact the accuracy of results obtained by glucose sensors, including CGMs. METHODS Seven sugars, seven sugar alcohols, and three artificial sweeteners were in vitro screened for interference with amperometric glucose oxidase (GOx) sensors at concentrations greater than physiologic concentrations. Galactose was investigated further at physiologically relevant concentrations using a custom amperometric system. Furthermore, glucose and galactose calibration experiments were conducted to facilitate multiple enzyme kinetic analysis approaches (Michaelis-Menten and Hill equation) to understand the potential source and mechanism of interference from galactose. RESULTS Under in vitro testing, except for galactose, xylose and mannose, all screened compounds exhibited interference bias, expressed in mean absolute relative difference (MARD), of ⩽ 20% even at concentrations significantly higher than normal physiologic concentrations. Galactose exhibited, CGM-dependent, MARD of 47-72% and was subjected to further testing. The highest recorded mean relative difference (MRD) was 6.9 ± 1.3% when testing physiologically relevant galactose concentrations (0.1-10 mg/dL). Enzyme kinetic analysis provided calculations of maximum reaction rates ( imax ), apparent Michaelis constants ( Kmapp ), and Hill equation h parameters for glucose and galactose substrates for the enzymes in the CGMs. CONCLUSION Under the conditions of in vitro screening, 14 of the 17 compounds did not exhibit measuarable interference. Galactose exhibited the highest interference during screening, but did not substantially interfere with CGMs under the conditions of in vitro testing at physiologically relevant concentrations. Enzyme kinetic analysis conducted with galactose supported the notion that (1) the reactivity of GOx enzyme toward nonglucose sugars and (2) the presence of enzymatic impurities (such as galactose oxidase) are two potential sources for sugar interference with GOx glucose sensors, and thus, should be considered during device development.
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Affiliation(s)
- Ryan Boehm
- Division of Biology, Chemistry, and Material Science (DBCMS), Office of Science and Engineering Laboratories (OSEL), Center for Devices and Radiological Health (CDRH), Food and Drug Administration (FDA), Silver Spring, MD, USA
| | - John Donovan
- Division of Biology, Chemistry, and Material Science (DBCMS), Office of Science and Engineering Laboratories (OSEL), Center for Devices and Radiological Health (CDRH), Food and Drug Administration (FDA), Silver Spring, MD, USA
- Penn State College of Medicine, Hershey, PA, USA
| | - Disha Sheth
- Division of Biology, Chemistry, and Material Science (DBCMS), Office of Science and Engineering Laboratories (OSEL), Center for Devices and Radiological Health (CDRH), Food and Drug Administration (FDA), Silver Spring, MD, USA
- Dexcom, Inc, San Diego, CA, USA
| | - Andrew Durfor
- Office of Compliance, CDRH/FDA, Silver Spring, MD, USA
| | - Jason Roberts
- Office of Device Evaluation, CDRH/FDA, Silver Spring, MD, USA
| | - Irada Isayeva
- Division of Biology, Chemistry, and Material Science (DBCMS), Office of Science and Engineering Laboratories (OSEL), Center for Devices and Radiological Health (CDRH), Food and Drug Administration (FDA), Silver Spring, MD, USA
- Irada Isayeva, PhD, Food and Drug Administration, 10903 New Hampshire Ave, WO64-3070, Silver Spring, MD 20993, USA.
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Cennamo N, D'Agostino G, Sequeira F, Mattiello F, Porto G, Biasiolo A, Nogueira R, Bilro L, Zeni L. A Simple and Low-Cost Optical Fiber Intensity-Based Configuration for Perfluorinated Compounds in Water Solution. SENSORS 2018; 18:s18093009. [PMID: 30205565 PMCID: PMC6165455 DOI: 10.3390/s18093009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/05/2018] [Accepted: 09/06/2018] [Indexed: 12/14/2022]
Abstract
We present a very simple approach for the detection of the Perfluorinated Alkylated Substances (PFAs) in water solution. Perfluorooctanesulfonate (PFOS) and Perfluorooctanoate (PFOA) are the most extensively investigated perfluoroalkyl and polyfluoroalkyl substances in water because human exposition can occur through different pathways, even if the dietary intake seems to be their main route of exposure. The developed sensor is based on a specific Molecularly Imprinted Polymer (MIP) receptor deposited on a simple D-shaped Plastic Optical Fiber (POF) platform. This novel chemical sensor has been characterized using a very simple and low-cost experimental setup based on an LED and two photodetectors. This optical sensor system is an alternative method to monitor the presence of contaminants with an MIP receptor, instead of a surface plasmon resonance (SPR) sensor in D-shaped POFs. For the sake of comparison, the results obtained exploiting the same MIP for PFAs on a classic SPR-POF sensor have been reported. The experimental results have shown that the actual limit of detection of this new configuration was about 0.5 ppb. It is similar to the one obtained by the configuration based on an SPR-POF with the same MIP receptor.
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Affiliation(s)
- Nunzio Cennamo
- Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy.
| | | | | | - Francesco Mattiello
- Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy.
| | | | | | | | - Lúcia Bilro
- Instituto de Telecomunicações, 3810-193 Aveiro, Portugal.
| | - Luigi Zeni
- Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy.
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Zvereva EA, Zherdev AV, Formanovsky AA, Abuknesha RA, Eremin SA, Dzantiev BB. Fluorescence polarization immunoassay of colchicine. J Pharm Biomed Anal 2018; 159:326-330. [DOI: 10.1016/j.jpba.2018.07.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/04/2018] [Accepted: 07/08/2018] [Indexed: 11/27/2022]
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38
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Zvereva EA, Shpakova NA, Zherdev AV, Xu C, Dzantiev BB. Highly Sensitive Immunochromatographic Assay for Qualitative and Quantitative Control of Beta-Agonist Ractopamine in Foods. APPL BIOCHEM MICRO+ 2018. [DOI: 10.1134/s0003683818040166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Ogata AF, Song SW, Cho SH, Koo WT, Jang JS, Jeong YJ, Kim MH, Cheong JY, Penner RM, Kim ID. An Impedance-Transduced Chemiresistor with a Porous Carbon Channel for Rapid, Nonenzymatic, Glucose Sensing. Anal Chem 2018; 90:9338-9346. [DOI: 10.1021/acs.analchem.8b01959] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Alana F. Ogata
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Seok-Won Song
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Su-Ho Cho
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Won-Tae Koo
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Ji-Soo Jang
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yong Jin Jeong
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Min-Hyeok Kim
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jun Young Cheong
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Reginald M. Penner
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Il-Doo Kim
- Deparment of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
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Mazurenko S, Bidmanova S, Kotlanova M, Damborsky J, Prokop Z. Sensitive operation of enzyme-based biodevices by advanced signal processing. PLoS One 2018; 13:e0198913. [PMID: 29912920 PMCID: PMC6005535 DOI: 10.1371/journal.pone.0198913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 05/29/2018] [Indexed: 12/26/2022] Open
Abstract
Analytical devices that combine sensitive biological component with a physicochemical detector hold a great potential for various applications, e.g., environmental monitoring, food analysis or medical diagnostics. Continuous efforts to develop inexpensive sensitive biodevices for detecting target substances typically focus on the design of biorecognition elements and their physical implementation, while the methods for processing signals generated by such devices have received far less attention. Here, we present fundamental considerations related to signal processing in biosensor design and investigate how undemanding signal treatment facilitates calibration and operation of enzyme-based biodevices. Our signal treatment approach was thoroughly validated with two model systems: (i) a biodevice for detecting chemical warfare agents and environmental pollutants based on the activity of haloalkane dehalogenase, with the sensitive range for bis(2-chloroethyl) ether of 0.01–0.8 mM and (ii) a biodevice for detecting hazardous pesticides based on the activity of γ-hexachlorocyclohexane dehydrochlorinase with the sensitive range for γ-hexachlorocyclohexane of 0.01–0.3 mM. We demonstrate that the advanced signal processing based on curve fitting enables precise quantification of parameters important for sensitive operation of enzyme-based biodevices, including: (i) automated exclusion of signal regions with substantial noise, (ii) derivation of calibration curves with significantly reduced error, (iii) shortening of the detection time, and (iv) reliable extrapolation of the signal to the initial conditions. The presented simple signal curve fitting supports rational design of optimal system setup by explicit and flexible quantification of its properties and will find a broad use in the development of sensitive and robust biodevices.
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Affiliation(s)
- Stanislav Mazurenko
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment RECETOX, Masaryk University, Brno, Czech Republic
| | - Sarka Bidmanova
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment RECETOX, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - Marketa Kotlanova
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment RECETOX, Masaryk University, Brno, Czech Republic
- Enantis, s r.o., Brno, Czech Republic
| | - Jiri Damborsky
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment RECETOX, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - Zbynek Prokop
- Loschmidt Laboratories, Department of Experimental Biology and Research Centre for Toxic Compounds in the Environment RECETOX, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
- * E-mail:
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A Molecularly Imprinted Polymer on a Plasmonic Plastic Optical Fiber to Detect Perfluorinated Compounds in Water. SENSORS 2018; 18:s18061836. [PMID: 29874860 PMCID: PMC6021968 DOI: 10.3390/s18061836] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/04/2018] [Accepted: 06/04/2018] [Indexed: 12/14/2022]
Abstract
A novel Molecularly Imprinted Polymer (MIP) able to bind perfluorinated compounds, combined with a surface plasmon resonance (SPR) optical fiber platform, is presented. The new MIP receptor has been deposited on a D-shaped plastic optical fiber (POF) covered with a photoresist buffer layer and a thin gold film. The experimental results have shown that the developed SPR-POF-MIP sensor makes it possible to selectively detect the above compounds. In this work, we present the results obtained with perfluorooctanoate (PFOA) compound, and they hold true when obtained with a perfluorinated alkylated substances (PFAs) mixture sample. The sensor’s response is the same for PFOA, perfluorooctanesulfonate (PFOS) or PFA contaminants in the C4–C11 range. We have also tested a sensor based on a non-imprinted polymer (NIP) on the same SPR in a D-shaped POF platform. The limit of detection (LOD) of the developed chemical sensor was 0.13 ppb. It is similar to the one obtained by the configuration based on a specific antibody for PFOA/PFOS exploiting the same SPR-POF platform, already reported in literature. The advantage of an MIP receptor is that it presents a better stability out of the native environment, very good reproducibility, low cost and, furthermore, it can be directly deposited on the gold layer, without modifying the metal surface by functionalizing procedures.
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42
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Highly sensitive immunochromatographic assay for qualitative and quantitative control of beta-agonist salbutamol and its structural analogs in foods. Food Control 2018. [DOI: 10.1016/j.foodcont.2017.11.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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43
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Bown HK, Bonn C, Yohe S, Yadav DB, Patapoff TW, Daugherty A, Mrsny RJ. In vitro model for predicting bioavailability of subcutaneously injected monoclonal antibodies. J Control Release 2018; 273:13-20. [PMID: 29355621 DOI: 10.1016/j.jconrel.2018.01.015] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 01/13/2018] [Accepted: 01/16/2018] [Indexed: 12/01/2022]
Abstract
Monoclonal antibodies (mAbs), which are now more frequently administered by subcutaneous (SC) injection rather than intravenously, have become a tremendously successful drug format across a wide range of therapeutic areas. Preclinical evaluations of mAbs to be administered by SC injection are typically performed in species such as mice, rats, minipigs, and cynomolgus monkeys to obtain critical information regarding formulation performance and prediction of PK/PD outcomes needed to select clinical doses for first-in-human studies. Despite extensive efforts, no preclinical model has been identified to date that accurately predicts clinical outcomes for these SC injections. We have addressed this deficiency with a novel in vitro instrument, termed Scissor, to model events occurring at the SC injection site and now further validated this approach using a set of eight mAbs for which clinical PK/PD outcomes have been obtained. Diffusion of these mAbs from the Scissor system injection cartridge into a large volume physiological buffer, used to emulate mAb movement from the SC injection site into the systemic circulation, provided distinct profiles when monitored over a 6h period. Curve-fitting analysis of these profiles using the Hill equation identified parameters that were used, along with physicochemical properties for each mAb, in a partial least squares analysis to define a relationship between molecule and formulation properties with clinical PK outcomes. The results demonstrate that parameters of protein charge at neutral pH and isoelectric point (pI) along with combined formulation properties such as viscosity and mAb concentration can dictate the movement of the mAb from the injection cartridge to infinite sink compartment. Examination of profile characteristics of this movement provided a strong predictive correlation for these eight mAbs. Together, this approach demonstrates the feasibility of this in vitro modelling strategy as a tool to identify drug and formulation properties that can define the performance of SC injected medicines and provide the potential for predicting clinical outcomes that could be useful for formulation selection and a first-in-human clinical dosing strategy.
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Affiliation(s)
- Hanne Kinnunen Bown
- School of Medicine, Pharmacy and Health, Division of Pharmacy, Durham University, Stockton-on-Tees TS17 6BH, UK
| | - Catherine Bonn
- School of Medicine, Pharmacy and Health, Division of Pharmacy, Durham University, Stockton-on-Tees TS17 6BH, UK
| | - Stefan Yohe
- Drug Delivery, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Daniela Bumbaca Yadav
- Preclinical and Translational Pharmacokinetics, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Thomas W Patapoff
- Early Stage Formulation Development, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Ann Daugherty
- Drug Delivery, Genentech, Inc., South San Francisco, CA 94080, USA
| | - Randall J Mrsny
- Department of Pharmacy and Pharmacology, University of Bath, Bath, UK.
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44
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A High Sensitivity Biosensor to detect the presence of perfluorinated compounds in environment. Talanta 2018; 178:955-961. [DOI: 10.1016/j.talanta.2017.10.034] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 10/06/2017] [Accepted: 10/20/2017] [Indexed: 12/31/2022]
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45
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Urmann K, Reich P, Walter JG, Beckmann D, Segal E, Scheper T. Rapid and label-free detection of protein a by aptamer-tethered porous silicon nanostructures. J Biotechnol 2017; 257:171-177. [PMID: 28131857 DOI: 10.1016/j.jbiotec.2017.01.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 01/19/2017] [Accepted: 01/24/2017] [Indexed: 02/07/2023]
Abstract
Protein A, which is secreted by and displayed on the cell membrane of Staphylococcus aureus is an important biomarker for S. aureus. Thus, its rapid and specific detection may facilitate the pathogen identification and initiation of proper treatment. Herein, we present a simple, label-free and rapid optical biosensor enabling specific detection of protein A. Protein A-binding aptamer serves as the capture probe and is immobilized onto a nanostructured porous silicon thin film, which serves as the optical transducer element. We demonstrate high sensitivity of the biosensor with a linear detection range between 8 and 23μM. The apparent dissociation constant was determined as 13.98μM and the LoD is 3.17μM. Harnessing the affinity between protein A and antibodies, a sandwich assay format was developed to amplify the optical signal associated with protein A capture by the aptamer. Using this approach, we increase the sensitivity of the biosensor, resulting in a three times lower LoD.
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Affiliation(s)
- Katharina Urmann
- Institute of Technical Chemistry, Leibniz Universität Hannover, Callinstr. 5, 30167 Hanover, Germany; Department of Biotechnology and Food Engineering, Technion Israel Institute of Technology, Technion City, 32000 Haifa, Israel
| | - Peggy Reich
- Institute of Technical Chemistry, Leibniz Universität Hannover, Callinstr. 5, 30167 Hanover, Germany; Institute for Bioprocessing and Analytical Measurement Techniques e.V., Rosenhof, 37308 Heilbad Heiligenstadt, Germany
| | - Johanna-Gabriela Walter
- Institute of Technical Chemistry, Leibniz Universität Hannover, Callinstr. 5, 30167 Hanover, Germany
| | - Dieter Beckmann
- Institute for Bioprocessing and Analytical Measurement Techniques e.V., Rosenhof, 37308 Heilbad Heiligenstadt, Germany
| | - Ester Segal
- Department of Biotechnology and Food Engineering, Technion Israel Institute of Technology, Technion City, 32000 Haifa, Israel.
| | - Thomas Scheper
- Institute of Technical Chemistry, Leibniz Universität Hannover, Callinstr. 5, 30167 Hanover, Germany.
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Ogata AF, Edgar JM, Majumdar S, Briggs JS, Patterson SV, Tan MX, Kudlacek ST, Schneider CA, Weiss GA, Penner RM. Virus-Enabled Biosensor for Human Serum Albumin. Anal Chem 2017; 89:1373-1381. [PMID: 27989106 PMCID: PMC5518940 DOI: 10.1021/acs.analchem.6b04840] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The label-free detection of human serum albumin (HSA) in aqueous buffer is demonstrated using a simple, monolithic, two-electrode electrochemical biosensor. In this device, both millimeter-scale electrodes are coated with a thin layer of a composite containing M13 virus particles and the electronically conductive polymer poly(3,4-ethylenedioxy thiophene) or PEDOT. These virus particles, engineered to selectively bind HSA, serve as receptors in this biosensor. The resistance component of the electrical impedance, Zre, measured between these two electrodes provides electrical transduction of HSA binding to the virus-PEDOT film. The analysis of sample volumes as small as 50 μL is made possible using a microfluidic cell. Upon exposure to HSA, virus-PEDOT films show a prompt increase in Zre within 5 s and a stable Zre signal within 15 min. HSA concentrations in the range from 100 nM to 5 μM are detectable. Sensor-to-sensor reproducibility of the HSA measurement is characterized by a coefficient-of-variance (COV) ranging from 2% to 8% across this entire concentration range. In addition, virus-PEDOT sensors successfully detected HSA in synthetic urine solutions.
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Affiliation(s)
- Alana F. Ogata
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025
| | - Joshua M. Edgar
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025
| | - Sudipta Majumdar
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025
| | | | | | - Ming X. Tan
- Wainamics Inc., 3135 Osgood Ct, Fremont, CA 94539
| | - Stephen T. Kudlacek
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025
| | | | - Gregory A. Weiss
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025
- PhageTech Inc., 5151 California Ave. Suite 150, Irvine, CA 92617
| | - Reginald M. Penner
- Department of Chemistry, University of California, Irvine, Irvine, CA 92697-2025
- PhageTech Inc., 5151 California Ave. Suite 150, Irvine, CA 92617
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47
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Highly Sensitive Immunochromatographic Identification of Tetracycline Antibiotics in Milk. Int J Anal Chem 2015; 2015:347621. [PMID: 26689537 PMCID: PMC4673384 DOI: 10.1155/2015/347621] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 11/04/2015] [Indexed: 12/11/2022] Open
Abstract
A rapid immunochromatographic assay was developed for the control of tetracycline (TC). The assay is based on the competition between immobilized TC-protein conjugate and TC in a tested sample for binding with polyclonal anti-TC antibodies conjugated to colloidal gold during the flow of the sample along a membrane strip with immobilized reactants. Conjugation of colloidal gold and the total immunoglobulin (IgG) fraction of polyclonal antibodies was used to increase the assay sensitivity to ensure low content of specific antibodies in the conjugate. This allowed effective inhibition of free TC and conjugate binding in the strip test zone. Photometric marker registration allows control of the reduction of binding, thereby enhancing detection sensitivity. The proposed assay allows TC to be detected at concentrations up to 20 ng/mL, exceeding the limit of detection of the known analogues, in a wide working range (more than two orders) of 60 pg/mL to 10 ng/mL, ensured through the use of polyclonal antibodies. The assay time is 10 min. The efficiency of the designed assay is shown to identify TC in milk; the degree of recovery of TC ranges from 90 to 112%. The precision of the concentrations measurements was no more than 10%.
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48
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Cennamo N, De Maria L, D'Agostino G, Zeni L, Pesavento M. Monitoring of low levels of furfural in power transformer oil with a sensor system based on a POF-MIP platform. SENSORS 2015; 15:8499-511. [PMID: 25871719 PMCID: PMC4431280 DOI: 10.3390/s150408499] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 03/27/2015] [Accepted: 04/02/2015] [Indexed: 11/25/2022]
Abstract
In this work an innovative, miniaturized and low cost optical chemical sensor (POF-MIP platform), based on a molecular imprinted polymer (MIP) and surface plasmon resonance in a plastic optical fiber (POF), is presented and preliminarily tested for monitoring of furfural (furan-2-carbaldehyde) in transformer oil. To this end, the optical platform was coupled to an MIP layer, highly selective for furfural. The ability of the developed sensor to directly detect furfural in the insulating oil was investigated. The detection limit of the sensor has been found to be 9 ppb, with a linear response up to about 30 ppb. However there is a sensible response up to 0.15 ppm. Because of the small linearity range, the Hill equation is suggested for the quantification. The sensor has been effectively tested in real oil samples collected from aged electrical equipment removed from service. The assessed concentration of furfural is in good agreement with that evaluated by a high pressure liquid chromatography (HLPC) method, confirming the good selectivity of the proposed sensor.
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Affiliation(s)
- Nunzio Cennamo
- Department of Industrial and Information Engineering, Second University of Naples, Via Roma 29, Aversa 81031, Italy.
| | - Letizia De Maria
- Department of Transmission and Distribution Technologies, RSE Research on Energetic System S.p.A, Via Rubattino 54, Milano 20134, Italy.
| | - Girolamo D'Agostino
- Department of Chemistry, University of Pavia, Via Taramelli, Pavia 12-27100, Italy.
| | - Luigi Zeni
- Department of Industrial and Information Engineering, Second University of Naples, Via Roma 29, Aversa 81031, Italy.
| | - Maria Pesavento
- Department of Chemistry, University of Pavia, Via Taramelli, Pavia 12-27100, Italy.
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49
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Sicard C, Glen C, Aubie B, Wallace D, Jahanshahi-Anbuhi S, Pennings K, Daigger GT, Pelton R, Brennan JD, Filipe CDM. Tools for water quality monitoring and mapping using paper-based sensors and cell phones. WATER RESEARCH 2015; 70:360-369. [PMID: 25546358 DOI: 10.1016/j.watres.2014.12.005] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 11/27/2014] [Accepted: 12/03/2014] [Indexed: 06/04/2023]
Abstract
In this paper we describe a combination of paper-based sensors and a novel smart-phone application for on-site quantification of colorimetric readouts as an ultra-low cost solution to monitoring water quality. The system utilizes a paper-based analytical device (μPAD) that produces a colorimetric signal that is dependent on the concentration of a specific target; a cell phone equipped with a camera for capturing images of two μPADs - one tested with a water sample and the other tested with clean water that is used as a control; and an on-site image processing app that uses a novel algorithm for quantifying color intensity and relating this to contaminant concentration. The cell phone app utilizes a pixel counting algorithm that performs with less bias and user subjectivity than the typically used lab-based software, ImageJ. The use of a test and control strip reduces bias from variations in ambient lighting, making it possible to acquire and process images on-site. The cell phone is also able to GPS tag the location of the test, and transmit results to a newly developed website, WaterMap.ca, that displays the quantitative results from the water samples on a map. We demonstrate our approach using a previously developed μPAD that detects the presence of organophosphate pesticides based on the inhibition of immobilized acetylcholinesterase by these contaminants. The objective of this paper is to highlight the importance and potential of developing and integrated monitoring system consisting of μPADs, cell-phones and a centralized web portal for low-cost monitoring environmental contaminants at a large-scale.
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Affiliation(s)
- Clémence Sicard
- Biointerfaces Institute and Department of Chemistry & Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L89, Canada
| | - Chad Glen
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7, Canada
| | - Brandon Aubie
- Biointerfaces Institute, McMaster University, 1280 Main Street West, Hamilton, ON L8S OA3, Canada
| | - Dan Wallace
- Biointerfaces Institute, McMaster University, 1280 Main Street West, Hamilton, ON L8S OA3, Canada
| | - Sana Jahanshahi-Anbuhi
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7, Canada
| | - Kevin Pennings
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7, Canada
| | | | - Robert Pelton
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7, Canada; Biointerfaces Institute, McMaster University, 1280 Main Street West, Hamilton, ON L8S OA3, Canada
| | - John D Brennan
- Biointerfaces Institute and Department of Chemistry & Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L89, Canada; Biointerfaces Institute, McMaster University, 1280 Main Street West, Hamilton, ON L8S OA3, Canada.
| | - Carlos D M Filipe
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7, Canada; Biointerfaces Institute, McMaster University, 1280 Main Street West, Hamilton, ON L8S OA3, Canada.
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50
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Kuznetsova TA, Beschastnyĭ AP, Alferov SV, Trotsenko IA. [Properties of modified amperometric biosensors based on methanol dehydrogenase and Methylobacterium nodulans cells]. APPL BIOCHEM MICRO+ 2014; 49:613-8. [PMID: 25434185 DOI: 10.1134/s0003683813060100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The properties of amperometric biosensors based on methanol dehydrogenase (MDH), Methylobacterium nodulans cells, and the ferrocene-modified carbon paste electrode were investigated. It was shown that the addition ofhydroxyapatite (HA) to a carbon paste increased the sensitivity and operating stability of MDH biosensors. The linear range of the electrode was 0.0135-0.5 and 0.032-1.5 mM for methanol and formaldehyde, respectively. The detection limit of methanol and formaldehyde was 4.5 and 11.0 microM, respectively. The loss of activity of the electrode within 10 days of storage in the presence of 2.0 mM KCN did not exceed 12%. Cyanide (10 mM) completely inhibited the sensor responses to formaldehyde (1.0 mM), which allowed for the selective determination of methanol in the presence of formaldehyde. The biosensor based on cells exhibited lower stability and sensitivity toward methanol and formaldehyde; the sensitivity coefficients were 980 and 21 nA/mM, respectively.
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