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Monkrathok J, Janphuang P, Suphachiaraphan S, Kampaengsri S, Kamkaew A, Chansaenpak K, Lisnund S, Blay V, Pinyou P. Enhancing Glucose Biosensing with Graphene Oxide and Ferrocene-Modified Linear Poly(ethylenimine). BIOSENSORS 2024; 14:161. [PMID: 38667154 PMCID: PMC11048651 DOI: 10.3390/bios14040161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024]
Abstract
We designed and optimized a glucose biosensor system based on a screen-printed electrode modified with the NAD-GDH enzyme. To enhance the electroactive surface area and improve the electron transfer efficiency, we introduced graphene oxide (GO) and ferrocene-modified linear poly(ethylenimine) (LPEI-Fc) onto the biosensor surface. This strategic modification exploits the electrostatic interaction between graphene oxide, which possesses a negative charge, and LPEI-Fc, which is positively charged. This interaction results in increased catalytic current during glucose oxidation and helps improve the overall glucose detection sensitivity by amperometry. We integrated the developed glucose sensor into a flow injection (FI) system. This integration facilitates a swift and reproducible detection of glucose, and it also mitigates the risk of contamination during the analyses. The incorporation of an FI system improves the efficiency of the biosensor, ensuring precise and reliable results in a short time. The proposed sensor was operated at a constant applied potential of 0.35 V. After optimizing the system, a linear calibration curve was obtained for the concentration range of 1.0-40 mM (R2 = 0.986). The FI system was successfully applied to determine the glucose content of a commercial sports drink.
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Affiliation(s)
- Jirawan Monkrathok
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Ave., Nakhon Ratchasima 30000, Thailand; (J.M.); (S.K.); (A.K.)
| | - Pattanaphong Janphuang
- Synchrotron Light Research Institute (Public Organization), 111 University Ave., Nakhon Ratchasima 30000, Thailand; (P.J.); (S.S.)
| | - Somphong Suphachiaraphan
- Synchrotron Light Research Institute (Public Organization), 111 University Ave., Nakhon Ratchasima 30000, Thailand; (P.J.); (S.S.)
| | - Sastiya Kampaengsri
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Ave., Nakhon Ratchasima 30000, Thailand; (J.M.); (S.K.); (A.K.)
| | - Anyanee Kamkaew
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Ave., Nakhon Ratchasima 30000, Thailand; (J.M.); (S.K.); (A.K.)
| | - Kantapat Chansaenpak
- National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand;
| | - Sireerat Lisnund
- Department of Applied Chemistry, Faculty of Science and Liberal Arts, Rajamangala University of Technology Isan, 744 Suranarai Rd., Nakhon Ratchasima 30000, Thailand;
| | - Vincent Blay
- Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, CA 95064, USA
| | - Piyanut Pinyou
- School of Chemistry, Institute of Science, Suranaree University of Technology, 111 University Ave., Nakhon Ratchasima 30000, Thailand; (J.M.); (S.K.); (A.K.)
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Cai R, Ngwadom C, Saxena R, Soman J, Bruggeman C, Hickey DP, Verduzco R, Ajo-Franklin CM. Creation of a point-of-care therapeutics sensor using protein engineering, electrochemical sensing and electronic integration. Nat Commun 2024; 15:1689. [PMID: 38402222 PMCID: PMC11258353 DOI: 10.1038/s41467-024-45789-9] [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: 06/28/2023] [Accepted: 02/05/2024] [Indexed: 02/26/2024] Open
Abstract
Point-of-care sensors, which are low-cost and user-friendly, play a crucial role in precision medicine by providing quick results for individuals. Here, we transform the conventional glucometer into a 4-hydroxytamoxifen therapeutic biosensor in which 4-hydroxytamoxifen modulates the electrical signal generated by glucose oxidation. To encode the 4-hydroxytamoxifen signal within glucose oxidation, we introduce the ligand-binding domain of estrogen receptor-alpha into pyrroloquinoline quinone-dependent glucose dehydrogenase by constructing and screening a comprehensive protein insertion library. In addition to obtaining 4-hydroxytamoxifen regulatable engineered proteins, these results unveil the significance of both secondary and quaternary protein structures in propagation of conformational signals. By constructing an effective bioelectrochemical interface, we detect 4-hydroxytamoxifen in human blood samples as changes in the electrical signal and use this to develop an electrochemical algorithm to decode the 4-hydroxytamoxifen signal from glucose. To meet the miniaturization and signal amplification requirements for point-of-care use, we harness power from glucose oxidation to create a self-powered sensor. We also amplify the 4-hydroxytamoxifen signal using an organic electrochemical transistor, resulting in milliampere-level signals. Our work demonstrates a broad interdisciplinary approach to create a biosensor that capitalizes on recent innovations in protein engineering, electrochemical sensing, and electrical engineering.
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Affiliation(s)
- Rong Cai
- Department of Biosciences, Rice University, Houston, TX, USA.
| | | | - Ravindra Saxena
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, TX, USA
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA
| | - Jayashree Soman
- Department of Biosciences, Rice University, Houston, TX, USA
| | - Chase Bruggeman
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI, USA
| | - David P Hickey
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI, USA
| | - Rafael Verduzco
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA
| | - Caroline M Ajo-Franklin
- Department of Biosciences, Rice University, Houston, TX, USA.
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA.
- Department of Bioengineering, Rice University, Houston, TX, USA.
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Radomski J, Vieira L, Sieber V. Bioelectrochemical synthesis of gluconate by glucose oxidase immobilized in a ferrocene based redox hydrogel. Bioelectrochemistry 2023; 151:108398. [PMID: 36805205 DOI: 10.1016/j.bioelechem.2023.108398] [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: 08/31/2022] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
The integration of redox enzymes on electrode surfaces enables the use of renewable energy for highly specific bioelectrochemical synthesis. Herein, we investigate the oxidation of glucose to gluconic acid on a bioanode, combining electrochemical and enzymatic components. Gluconic acid is a valuable chemical widely used in the industry. The bioanode consists of a redox hydrogel film of polyethylenimine (PEI) containing ferrocene (Fc) as a mediator, glycerol diglycidyl ether (GDGE) as a cross-linker, and the enzyme glucose oxidase (GOx). Optimization of the enzyme and cross-linker loading in the redox film led to faradaic efficiencies up to 96 ± 5 % for gluconate. The oxygen-free setup was highly stable for quantitative electrosynthesis, yielding gluconate concentrations of 6.4 ± 0.25 mmol L-1. Moreover, this catalase-free anaerobic system showed no production of H2O2 within 24 h, thereby eliminating the deactivation of the GOx caused by H2O2 and a high enzyme performance, with a turnover frequency (TOF) of 5 x10-3 s-1. This is the first quantitative bioelectrosynthesis of gluconate in an entirely anaerobic environment with electrode stability of at least 8 h.
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Affiliation(s)
- Johanna Radomski
- Chair of Chemistry for Biogenic Resources, Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 16, 94315 Straubing, Germany
| | - Luciana Vieira
- Fraunhofer Institute for Interfacial Engineering and Biotechnology, Bio, Electro and Chemocatalysis BioCat, Straubing branch, Schulgasse 11a, 94315 Straubing, Germany
| | - Volker Sieber
- Chair of Chemistry for Biogenic Resources, Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 16, 94315 Straubing, Germany; Fraunhofer Institute for Interfacial Engineering and Biotechnology, Bio, Electro and Chemocatalysis BioCat, Straubing branch, Schulgasse 11a, 94315 Straubing, Germany.
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Yang J, Gong X, Chen S, Zheng Y, Peng L, Liu B, Chen Z, Xie X, Yi C, Jiang L. Development of Smartphone-Controlled and Microneedle-Based Wearable Continuous Glucose Monitoring System for Home-Care Diabetes Management. ACS Sens 2023; 8:1241-1251. [PMID: 36821704 DOI: 10.1021/acssensors.2c02635] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Continuous glucose monitoring (CGM) can mini-invasively track blood glucose fluctuation and reduce the risk of hyperglycemia and hypoglycemia, and this is is in great demand for diabetes management. However, cost-effective manufacture of CGM systems with continuously improved convenience and performance is still the persistent goal. Herein, we developed a smartphone-controlled and microneedle (MN)-based wearable CGM system for long-term glucose monitoring. The CGM system modified with a sandwich-type enzyme immobilization strategy can satisfy the clinical requirement of interstitial fluid (ISF) glucose monitoring for 14 days with a mean absolute relative difference of 10.2% and a cost of less than $15, which correlated well with the commercial glucometer and FDA-approved CGM system FreeStyle Libre (Abbott Inc., Illinois, USA). The self-developed CGM system is demonstrated to accurately monitor glucose fluctuations and provide abundant clinical information. It is better to find the cause of individual blood glucose changes and beneficial for the guide of precise glucose control. On the whole, the intelligently wearable CGM system may provide an alternative solution for home-care diabetes management.
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Affiliation(s)
- Jian Yang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
| | - Xia Gong
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
| | - Shuijin Chen
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
| | - Ying Zheng
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
| | - Lelun Peng
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
| | - Bin Liu
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
| | - Zhipeng Chen
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
| | - Xi Xie
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, P. R. China
| | - Changqing Yi
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
- Research Institute of Sun Yat-Sen University in Shenzhen, Shenzhen 518057, P. R. China
| | - Lelun Jiang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument, School of Biomedical Engineering, Shenzhen Campus of Sun Yat-Sen University, Shenzhen 518107, P. R. China
- Research Institute of Sun Yat-Sen University in Shenzhen, Shenzhen 518057, P. R. China
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Estrada-Osorio D, Escalona-Villalpando RA, Gutiérrez A, Arriaga L, Ledesma-García J. Poly-L-lysine-modified with ferrocene to obtain a redox polymer for mediated glucose biosensor application. Bioelectrochemistry 2022; 146:108147. [DOI: 10.1016/j.bioelechem.2022.108147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 04/24/2022] [Accepted: 04/25/2022] [Indexed: 12/26/2022]
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6
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Hickey DP, Godman NP, Schmidtke DW, Glatzhofer DT. Chloroferrocene-mediated laccase bioelectrocatalyst for the rapid reduction of O2. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Díaz-González JCM, Escalona-Villalpando RA, Arriaga LG, Minteer SD, Casanova-Moreno JR. Effects of the cross-linker on the performance and stability of enzymatic electrocatalytic films of glucose oxidase and dimethylferrocene-modified linear poly(ethyleneimine). Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135782] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Chen J, Munje R, Godman NP, Prasad S, Glatzhofer DT, Schmidtke DW. Improved Performance of Glucose Bioanodes Using Composites of (7,6) Single-Walled Carbon Nanotubes and a Ferrocene-LPEI Redox Polymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7591-7599. [PMID: 28742363 DOI: 10.1021/acs.langmuir.7b00718] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The effect of incorporating different types of carbon nanotubes into composite films of a redox polymer (FcMe2-C3-LPEI) and glucose oxidase (GOX) was investigated. The composite films were constructed by first forming a high-surface area network film of either single-walled carbon nanotubes (SWNTs) or multiwalled carbon nanotubes (MWNTs) on a glassy carbon electrode (GCE) by solution casting of a suspension of Triton-X-100 dispersed SWNTs. Next a glucose responsive redox hydrogel was formed on top of the nanotube-modified electrode by cross-linking FcMe2-C3-LPEI with glucose oxidase via ethylene glycol diglycidyl ether (EGDGE). Electrochemical and enzymatic measurements showed that composite films made with (7,6) SWNTs produced a higher response (3.3 mA/cm2) to glucose than films made with (6,5) SWNTs (1.8 mA/cm2) or MWNTs (1.2 mA/cm2) or films made without SWNTs (0.7 mA/cm2). We also show that the response of the composite films could be systematically varied by fabricating SWNT films with different weight ratios of (7,6) and (6,5) SWNTs. Optimization of the (7,6) SWNTs loading and the redox polymer-enzyme film produced a glucose response of 11.2 mA/cm2. Combining the optimized glucose films with a platinum oxygen breathing cathode into a biofuel cell produced a maximum power density output of 343 μW/cm2.
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Affiliation(s)
- Jie Chen
- Department of Bioengineering, University of Texas at Dallas , 800 W. Campbell Rd., Richardson, Texas 75083, United States
| | - Rujuta Munje
- Department of Bioengineering, University of Texas at Dallas , 800 W. Campbell Rd., Richardson, Texas 75083, United States
| | | | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas , 800 W. Campbell Rd., Richardson, Texas 75083, United States
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10
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Hickey DP. Ferrocene-Modified Linear Poly(ethylenimine) for Enzymatic Immobilization and Electron Mediation. Methods Mol Biol 2017; 1504:181-191. [PMID: 27770422 DOI: 10.1007/978-1-4939-6499-4_14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Enzymatic glucose biosensors and biofuel cells make use of the electrochemical transduction between an oxidoreductase enzyme, such as glucose oxidase (GOx), and an electrode to either quantify the amount of glucose in a solution or generate electrical energy. However, many enzymes including GOx are not able to electrochemically interact with an electrode surface directly, but require an external electrochemical relay to shuttle electrons to the electrode. Ferrocene-modified linear poly(ethylenimine) (Fc-LPEI) redox polymers have been designed to simultaneously immobilize glucose oxidase (GOx) at an electrode and mediate electron transfer from their flavin adenine dinucleotide (FAD) active site to the electrode surface. Cross-linked films of Fc-LPEI create hydrogel networks that allow for rapid transport of glucose, while the covalently bound ferrocene moieties are able to facilitate rapid electron transfer due to the ability of ferrocene to exchange electrons between adjacent ferrocene residues. For these reasons, Fc-LPEI films have been widely used in the development of high current density bioanode materials. This chapter describes the synthesis of a commonly used dimethylferrocene-modified linear poly(ethylenimine), as well as the subsequent preparation and electrochemical characterization of a GOx bioanode film utilizing the synthesized polymer.
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Affiliation(s)
- David P Hickey
- Department of Chemistry, University of Utah, 315 S 1400 E, Salt Lake City, UT, 84112, USA.
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11
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Godman NP, DeLuca JL, McCollum SR, Schmidtke DW, Glatzhofer DT. Electrochemical Characterization of Layer-By-Layer Assembled Ferrocene-Modified Linear Poly(ethylenimine)/Enzyme Bioanodes for Glucose Sensor and Biofuel Cell Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3541-3551. [PMID: 26999756 DOI: 10.1021/acs.langmuir.5b04753] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ferrocenylhexyl- and ferrocenylpropyl-modified linear poly(ethylenimine) (Fc-C6-LPEI, Fc-C3-LPEI) were used with periodate-modified glucose oxidase (p-GOX) in the layer-by-layer assembly of enzymatic bioanodes on gold. Fc-C6-LPEI/p-GOX and Fc-C3-LPEI/p-GOX films of 16 bilayers were capable of generating up to 381 ± 3 and 1417 ± 63 μA cm(-2), respectively, in response to glucose. These responses are greater than those of analogous bioanodes fabricated using conventional cross-linking techniques and are extremely high for planar, low surface area, single-enzyme electrodes. (Fc-C3-LPEI/p-GOX)8 films generated 86 ± 3 μW cm(-2) at pH 7.0 and 149 ± 7 μW cm(-2) at pH 5.0, when poised against an air-breathing platinum cathode in a compartment-less biofuel cell. An increase in power output with decreasing pH was shown to be a result of increases in the platinum cathode performance, indicating it is the rate-limiting electrode in the biofuel cells. The effect of fabrication wash time on the buildup of material at the electrode's surface was probed using cyclic voltammetry (CV) and constant potential amperometry. The use of electrochemical techniques as a diagnostic tool for studying the material deposition process is discussed. CV peak separation (ΔE), surface coverage of the electroactive ferrocene (ΓFc), and amperometric sensitivity of the enzyme to glucose (Jmax), studied as a function of numbers of bilayers, showed that physisorption of materials onto the surface results from initial patchy deposition, rather than in distinctly uniform layers.
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Affiliation(s)
- Nicholas P Godman
- Department of Chemistry and Biochemistry, ‡University of Oklahoma Biomedical Engineering Center, and §School of Chemical, Biological and Materials Engineering, The University of Oklahoma , 100 East Boyd, Norman, Oklahoma 73019, United States
| | - Jared L DeLuca
- Department of Chemistry and Biochemistry, ‡University of Oklahoma Biomedical Engineering Center, and §School of Chemical, Biological and Materials Engineering, The University of Oklahoma , 100 East Boyd, Norman, Oklahoma 73019, United States
| | - Sean R McCollum
- Department of Chemistry and Biochemistry, ‡University of Oklahoma Biomedical Engineering Center, and §School of Chemical, Biological and Materials Engineering, The University of Oklahoma , 100 East Boyd, Norman, Oklahoma 73019, United States
| | - David W Schmidtke
- Department of Chemistry and Biochemistry, ‡University of Oklahoma Biomedical Engineering Center, and §School of Chemical, Biological and Materials Engineering, The University of Oklahoma , 100 East Boyd, Norman, Oklahoma 73019, United States
| | - Daniel T Glatzhofer
- Department of Chemistry and Biochemistry, ‡University of Oklahoma Biomedical Engineering Center, and §School of Chemical, Biological and Materials Engineering, The University of Oklahoma , 100 East Boyd, Norman, Oklahoma 73019, United States
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12
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High current density PQQ-dependent alcohol and aldehyde dehydrogenase bioanodes. Biosens Bioelectron 2015; 72:247-54. [DOI: 10.1016/j.bios.2015.05.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 11/17/2022]
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13
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Hickey DP, Reid RC, Milton RD, Minteer SD. A self-powered amperometric lactate biosensor based on lactate oxidase immobilized in dimethylferrocene-modified LPEI. Biosens Bioelectron 2015; 77:26-31. [PMID: 26385734 DOI: 10.1016/j.bios.2015.09.013] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/04/2015] [Accepted: 09/06/2015] [Indexed: 10/23/2022]
Abstract
Lactate is an important biomarker due to its excessive production by the body during anerobic metabolism. Existing methods for electrochemical lactate detection require the use of an external power source to supply a positive potential to the working electrode of a given device. Herein we describe a self-powered amperometric lactate biosensor that utilizes a dimethylferrocene-modified linear poly(ethylenimine) (FcMe2-LPEI) hydrogel to simultaneously immobilize and mediate electron transfer from lactate oxidase (LOx) at the anode and a previously described enzymatic cathode. Operating as a half-cell, the FcMe2-LPEI electrode material generates a jmax of 1.51 ± 0.13 mAcm(-2) with a KM of 1.6 ± 0.1 mM and a sensitivity of 400 ± 20 μAcm(-2)mM(-1) while operating with an applied potential of 0.3 V vs. SCE. When coupled with an enzymatic biocathode, the self-powered biosensor has a detection range between 0mM and 5mM lactate with a sensitivity of 45 ± 6 μAcm(-2)mM(-1). Additionally, the FcMe2-LPEI/LOx-based self-powered sensor is capable of generating a power density of 122 ± 5 μWcm(-2) with a current density of 657 ± 17 μAcm(-2) and an open circuit potential of 0.57 ± 0.01 V, which is sufficient to act as a supplemental power source for additional small electronic devices.
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Affiliation(s)
- David P Hickey
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, United States
| | - Russell C Reid
- Department of Mechanical Engineering, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, United States
| | - Ross D Milton
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, United States
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, United States.
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Reid RC, Minteer SD, Gale BK. Contact lens biofuel cell tested in a synthetic tear solution. Biosens Bioelectron 2014; 68:142-148. [PMID: 25562741 DOI: 10.1016/j.bios.2014.12.034] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/14/2014] [Accepted: 12/15/2014] [Indexed: 11/29/2022]
Abstract
A contact lens biofuel cell was fabricated using buckypaper electrodes cured on a silicone elastomer soft contact lens. The buckypaper anode consisted of poly(methylene green) and a hydrogel matrix containing lactate dehydrogenase and nicotinamide adenine dinucleotide hydrate (NAD(+)). The buckypaper cathode was modified with 1-pyrenemethyl anthracene-2-carboxylate, and then bilirubin oxidase was immobilized within a polymer. Contact lens biofuel cell testing was performed in a synthetic tear solution at 35°C. The open circuit voltage was 0.413±0.06 V and the maximum current and power density were 61.3±2.9 µA cm(-2) and 8.01±1.4 µWc m(-2), respectively. Continuous operation for 17h revealed anode instability as output current rapidly decreased in the first 4h and then stabilized for the next 13 h. The contact lens biofuel cell presented here is a step toward achieving self-powered electronic contact lenses and ocular devices with an integrated power source.
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Affiliation(s)
- Russell C Reid
- Department of Mechanical Engineering, State of Utah Center of Excellence for Biomedical Microfluidics, University of Utah, Salt Lake City, UT 84112, USA
| | - Shelley D Minteer
- Departments of Chemistry and Materials Science & Engineering, University of Utah, Salt Lake City, UT 84112, USA
| | - Bruce K Gale
- Department of Mechanical Engineering, State of Utah Center of Excellence for Biomedical Microfluidics, University of Utah, Salt Lake City, UT 84112, USA.
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Hickey DP, Halmes AJ, Schmidtke DW, Glatzhofer DT. Electrochemical Characterization of Glucose Bioanodes Based on Tetramethylferrocene-Modified Linear Poly(ethylenimine). Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.10.077] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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1,1′-Bis-(n-benzotriazolyl) ferrocenecarboxamide: Precursor for synthesis of 1,1′-bis-ferrocenoyl esters and thioesters. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Plamper FA. Changing Polymer Solvation by Electrochemical Means: Basics and Applications. POROUS CARBONS – HYPERBRANCHED POLYMERS – POLYMER SOLVATION 2014. [DOI: 10.1007/12_2014_284] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Physico-chemical characterization of ferrocenyl-modified hyperbranched poly(ethylenimine) self-assembled multilayers. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2013.11.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Marsh BJ, Hampton L, Goggins S, Frost CG. Fine-tuning of ferrocene redox potentials towards multiplex DNA detection. NEW J CHEM 2014. [DOI: 10.1039/c4nj01050g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rational tuning of ferrocene redox potential is achieved by modulation of the hydrophobicity and correlated to c log P.
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Affiliation(s)
| | | | - Sean Goggins
- Department of Chemistry
- University of Bath
- Bath, UK
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Takahashi S, Anzai JI. Recent Progress in Ferrocene-Modified Thin Films and Nanoparticles for Biosensors. MATERIALS (BASEL, SWITZERLAND) 2013; 6:5742-5762. [PMID: 28788421 PMCID: PMC5452732 DOI: 10.3390/ma6125742] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/02/2013] [Accepted: 12/02/2013] [Indexed: 02/06/2023]
Abstract
This article reviews recent progress in the development of ferrocene (Fc)-modified thin films and nanoparticles in relation to their biosensor applications. Redox-active materials in enzyme biosensors commonly use Fc derivatives, which mediate electron transfer between the electrode and enzyme active site. Either voltammetric or amperometric signals originating from redox reactions of Fc are detected or modulated by the binding of analytes on the electrode. Fc-modified thin films have been prepared by a variety of protocols, including insitu polymerization, layer-by-layer (LbL) deposition, host-guest complexation and molecular recognitions. Insitu polymerization provides a facile way to form Fc thin films, because the Fc polymers are directly deposited onto the electrode surface. LbL deposition, which can modulate the film thickness and Fc content, is suitable for preparing well-organized thin films. Other techniques, such as host-guest complexation and protein-based molecular recognition, are useful for preparing Fc thin films. Fc-modified Au nanoparticles have been widely used as redox-active materials to fabricate electrochemical biosensors. Fc derivatives are often attached to Au nanoparticles through a thiol-Au linkage. Nanoparticles consisting of inorganic porous materials, such as zeolites and iron oxide, and nanoparticle-based composite materials have also been used to prepare Fc-modified nanoparticles. To construct biosensors, Fc-modified nanoparticles are immobilized on the electrode surface together with enzymes.
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Affiliation(s)
- Shigehiro Takahashi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Jun-Ichi Anzai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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Hickey DP, Giroud F, Schmidtke DW, Glatzhofer DT, Minteer SD. Enzyme Cascade for Catalyzing Sucrose Oxidation in a Biofuel Cell. ACS Catal 2013. [DOI: 10.1021/cs4003832] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David P. Hickey
- Department
of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Fabien Giroud
- Departments of Chemistry and Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - David W. Schmidtke
- University
of Oklahoma Bioengineering Center, University of Oklahoma, Norman, Oklahoma 73019, United States
- School
of Chemical, Biological, Materials Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Daniel T. Glatzhofer
- Department
of Chemistry and Biochemistry, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Shelley D. Minteer
- Departments of Chemistry and Materials Science & Engineering, University of Utah, Salt Lake City, Utah 84112, United States
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