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Pinilla-Torres AM, Carrión-García PY, Sánchez-Domínguez CN, Gallardo-Blanco H, Sánchez-Domínguez M. Modification of Branched Polyethyleneimine Using Mesquite Gum for Its Improved Hemocompatibility. Polymers (Basel) 2021; 13:2766. [PMID: 34451303 PMCID: PMC8399277 DOI: 10.3390/polym13162766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/06/2021] [Accepted: 08/09/2021] [Indexed: 01/14/2023] Open
Abstract
In the present study, the modification of branched polyethyleneimine (b-PEI) was carried out using mesquite gum (MG) to improve its hemocompatibility to be used in biomedical applications. In the copolymer synthesis process (carboxymethylated mesquite gum grafted polyethyleneimine copolymer (CBX-MG-PEI), an MG carboxymethylation reaction was initially carried out (carboxymethylated mesquite gum (CBX-MG). Subsequently, the functionalization between CBX-MG and b-PEI was carried out using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxysuccinimide (NHS) as crosslinking agents. The synthesis products were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). Thermogravimetric analysis showed that CBX-MG and CBX-MG-PEI presented a lower decomposition temperature than MG. The CBX-MG-PEI has a high buffer capacity in the pH range of 4 to 7, similar to the b-PEI. In addition, the CBX-MG-PEI showed an improvement in hemocompatibility in comparison with the b-PEI. The results showed a non-hemolytic property at doses lower than 0.1 µg/mL (CBX-MG-PEI). These results allow us to propose that this copolymer be used in transfection, polymeric nanoparticles, and biomaterials due to its physicochemical and hemocompatibility properties.
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Affiliation(s)
- Ana M. Pinilla-Torres
- Grupo de Química Coloidal e Interfacial Aplicada a Nanomateriales y Formulaciones, Centro de Investigación en Materiales Avanzados, S.C. (CIMAV, S.C.), Unidad Monterrey, Apodaca 66628, Mexico;
| | - Paola Y. Carrión-García
- Departamento de Bioquímica y Medicina Molecular, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (P.Y.C.-G.); (C.N.S.-D.)
| | - Celia N. Sánchez-Domínguez
- Departamento de Bioquímica y Medicina Molecular, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico; (P.Y.C.-G.); (C.N.S.-D.)
| | - Hugo Gallardo-Blanco
- Departamento de Genética, Facultad de Medicina, Universidad Autónoma de Nuevo León, Monterrey 64460, Mexico
| | - Margarita Sánchez-Domínguez
- Grupo de Química Coloidal e Interfacial Aplicada a Nanomateriales y Formulaciones, Centro de Investigación en Materiales Avanzados, S.C. (CIMAV, S.C.), Unidad Monterrey, Apodaca 66628, Mexico;
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Enhancement of detection accuracy in depth-profiling using electrochemical impedance spectroscopy-on-a-needle by incremental compensation for immersion depth. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.02.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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3
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Saljooqi A, Shamspur T, Mostafavi A. Ag-4-ATP-MWCNT electrode modified with dsDNA as label-free electrochemical sensor for the detection of daunorubicin anticancer drug. Bioelectrochemistry 2017; 118:161-167. [PMID: 28843934 DOI: 10.1016/j.bioelechem.2017.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/11/2017] [Accepted: 08/15/2017] [Indexed: 10/19/2022]
Abstract
This paper describes the synthesis of Ag-4-ATP-MWCNT nanocomposite and its use as a modifier of working electrode. The surface of the electrochemical Ag-4-ATP-MWCNT electrode was modified with a double-stranded DNA (dsDNA) to detect daunorubicin-DNA interactions. Differential pulse voltammetry was applied to develop an electroanalytical procedure for the determination of daunorubicin and evaluate its interaction with dsDNA immobilized on the electrode surface. After the optimization of operational parameters, the linear dependence of the peak current on the daunorubicin concentration was observed in the range of 0.10×10-8 to 1.00×10-5molL-1, with the detection and quantification limits of 3.00×10-10 and 1.00×10-9molL-1, respectively. The proposed biosensor was successfully applied to validate its capability for the determination of daunorubicin in human serum and urine samples.
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Affiliation(s)
- Asma Saljooqi
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, PO Box 76169-133, Iran; Young Research Society, Shahid Bahonar University of Kerman, Kerman, PO Box 76169-133, Iran
| | - Tayebeh Shamspur
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, PO Box 76169-133, Iran.
| | - Ali Mostafavi
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, PO Box 76169-133, Iran
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4
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Construction of electrochemical DNA biosensors for investigation of potential risk chemical and physical agents. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-2012-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Printable Electrochemical Biosensors: A Focus on Screen-Printed Electrodes and Their Application. SENSORS 2016; 16:s16101761. [PMID: 27775661 PMCID: PMC5087545 DOI: 10.3390/s16101761] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/12/2016] [Accepted: 09/23/2016] [Indexed: 12/17/2022]
Abstract
In this review we present electrochemical biosensor developments, focusing on screen-printed electrodes (SPEs) and their applications. In particular, we discuss how SPEs enable simple integration, and the portability needed for on-field applications. First, we briefly discuss the general concept of biosensors and quickly move on to electrochemical biosensors. Drawing from research undertaken in this area, we cover the development of electrochemical DNA biosensors in great detail. Through specific examples, we describe the fabrication and surface modification of printed electrodes for sensitive and selective detection of targeted DNA sequences, as well as integration with reverse transcription-polymerase chain reaction (RT-PCR). For a more rounded approach, we also touch on electrochemical immunosensors and enzyme-based biosensors. Last, we present some electrochemical devices specifically developed for use with SPEs, including USB-powered compact mini potentiostat. The coupling demonstrates the practical use of printable electrode technologies for application at point-of-use. Although tremendous advances have indeed been made in this area, a few challenges remain. One of the main challenges is application of these technologies for on-field analysis, which involves complicated sample matrices.
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Synthesis and study of the electronic properties of pyrazolo[1,5-c]pyrrolo[1,2-a]quinazoline and pyrazolo[1,5-c]pyrido[1,2-a]quinazoline derivatives. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1783-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Saleem M, Yu H, Wang L, Zain-ul-Abdin, Khalid H, Akram M, Abbasi NM, Chen Y. Study on synthesis of ferrocene-based boronic acid derivatives and their saccharides sensing properties. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2015.12.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Ilkhani H, Hughes T, Li J, Zhong CJ, Hepel M. Nanostructured SERS-electrochemical biosensors for testing of anticancer drug interactions with DNA. Biosens Bioelectron 2016; 80:257-264. [PMID: 26851584 DOI: 10.1016/j.bios.2016.01.068] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 12/31/2022]
Abstract
Widely used anti-cancer treatments involving chemotherapeutic drugs result in cancer cell damage due to their strong interaction with DNA. In this work, we have developed laboratory biosensors for screening chemotherapeutic drugs and to aid in the assessment of DNA modification/damage caused by these drugs. The sensors utilize surface-enhanced Raman scattering (SERS) spectroscopy and electrochemical methods to monitor sensory film modification and observe the drug-DNA reactivity. The self-assembled monolayer protected gold-disk electrode (AuDE) was coated with a reduced graphene oxide (rGO), decorated with plasmonic gold-coated Fe2Ni@Au magnetic nanoparticles functionalized with double-stranded DNA (dsDNA), a sequence of the breast cancer gene BRCA1. The nanobiosensors AuDE/SAM/rGO/Fe2Ni@Au/dsDNA were then subjected to the action of a model chemotherapeutic drug, doxorubicin (DOX), to assess the DNA modification and its dose dependence. The designed novel nanobiosensors offer SERS/electrochemical transduction, enabling chemically specific and highly sensitive analytical signals generation. The SERS measurements have corroborated the DOX intercalation into the DNA duplex whereas the electrochemical scans have indicated that the DNA modification by DOX proceeds in a concentration dependent manner, with limit of detection LOD=8 µg/mL (S/N=3), with semilog linearity over 3 orders of magnitude. These new biosensors are sensitive to agents that interact with DNA and facilitate the analysis of functional groups for determination of the binding mode. The proposed nanobiosensors can be applied in the first stage of the drug development for testing the interactions of new drugs with DNA before the drug efficacy can be assessed in more expensive testing in vitro and in vivo.
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Affiliation(s)
- Hoda Ilkhani
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA
| | - Taylor Hughes
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA
| | - Jing Li
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Chuan Jian Zhong
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Maria Hepel
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA.
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Saleem M, Yu H, Wang L, Zain-ul-Abdin, Khalid H, Akram M, Abbasi NM, Huang J. Review on synthesis of ferrocene-based redox polymers and derivatives and their application in glucose sensing. Anal Chim Acta 2015; 876:9-25. [DOI: 10.1016/j.aca.2015.01.012] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 01/06/2015] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
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10
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Kumar A, Pandey R, Kumar A, Pandey DS. Pyridylphenyl appended imidazoquinazoline based ratiometric fluorescence “turn on” chemosensor for Hg2+and Al3+in aqueous media. RSC Adv 2014. [DOI: 10.1039/c4ra09804h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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11
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Taleat Z, Khoshroo A, Mazloum-Ardakani M. Screen-printed electrodes for biosensing: a review (2008–2013). Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1181-1] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Kumar A, Pandey R, Gupta RK, Pandey DS. Fluorescent azophenol-quinazoline dyad as multichannel reversible pH indicator in aqueous media: an innovative concept on diazo based dyads. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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13
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Jalit Y, Moreno M, Gutierrez FA, Sanchez Arribas A, Chicharro M, Bermejo E, Zapardiel A, Parrado C, Rivas GA, Rodríguez MC. Adsorption and Electrooxidation of Nucleic Acids at Glassy Carbon Electrodes Modified with Multiwalled Carbon Nanotubes Dispersed In Polylysine. ELECTROANAL 2013. [DOI: 10.1002/elan.201200622] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Nowicka AM, Stojek Z, Hepel M. Chromium(VI) but not chromium(III) species decrease mitoxantrone affinity to DNA. J Phys Chem B 2013; 117:1021-30. [PMID: 23293930 DOI: 10.1021/jp3109094] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Binding of mitoxantrone (MXT) to double-stranded DNA has been investigated as a model drug-DNA binding system to evaluate the effects of various forms of chromium on the binding properties. We have found that Cr(III), which binds strongly to DNA, does not affect the MXT affinity to DNA. In contrast, Cr(VI), in the form of chromate ions CrO(4)(2-), decreases the MXT affinity to DNA despite electrostatic repulsions with phosphate-deoxyribose chains of DNA. The MXT-DNA binding constant was found to decrease from (1.96 ± 0.005) × 10(5) to (0.77 ± 0.018) × 10(5) M(-1) for Cr(VI) concentration changing from 0 to 30 μM. The influence of Cr(VI) on MXT-DNA binding has been attributed to the oxidation of guanine residue, thus interrupting the intercalation of MXT into the DNA double helix at the preferential CpG intercalation site. This supposition is corroborated by the observed increase in the MXT binding site size from 2 bp (base pairs) to 4-6 bp in the presence of Cr(VI). The measurements of the MXT-DNA binding constant and the MXT binding site size on a DNA molecule have been carried out using spectroscopic, voltammetric, and nanogravimetric techniques, providing useful information on the mechanism of the interactions.
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Affiliation(s)
- Anna M Nowicka
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, USA
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Apartsin EK, Buyanova MY, Novopashina DS, Ryabchikova EI, Venyaminova AG. Non-Covalent Immobilization of Oligonucleotides on Single-Walled Carbon Nanotubes. SPRINGER PROCEEDINGS IN PHYSICS 2013. [DOI: 10.1007/978-1-4614-7675-7_20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Ensafi AA, Heydari-Bafrooei E, Rezaei B. DNA-Based Biosensor for Comparative Study of Catalytic Effect of Transition Metals on Autoxidation of Sulfite. Anal Chem 2012; 85:991-7. [DOI: 10.1021/ac302693j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ali A. Ensafi
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156−83111, Iran
| | | | - Behzad Rezaei
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156−83111, Iran
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Chen Z, Wang Z, Chen J, Chen X. Alizarin red S/copper ion-based ensemble for fluorescence turn on detection of glutathione with tunable dynamic range. Biosens Bioelectron 2012; 38:202-8. [DOI: 10.1016/j.bios.2012.05.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Revised: 04/29/2012] [Accepted: 05/24/2012] [Indexed: 01/23/2023]
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18
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Pandey R, Yadav M, Shahid M, Misra A, Pandey DS. Design and synthesis of fluorescent 6-aryl[1,2-c]quinazolines serving as selective and sensitive ‘on-off’ chemosensor for Hg2+ in aqueous media. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.04.128] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Stobiecka M, Molinero AA, Chałupa A, Hepel M. Mercury/homocysteine ligation-induced ON/OFF-switching of a T-T mismatch-based oligonucleotide molecular beacon. Anal Chem 2012; 84:4970-8. [PMID: 22524145 DOI: 10.1021/ac300632u] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A molecular beacon (MB) with stem-loop (hairpin) DNA structure and with attached fluorophore-quencher pair at the ends of the strand has been applied to study the interactions of Hg(2+) ions with a thymine-thymine (T-T) mismatch in Watson-Crick base-pairs and the ligative disassembly of MB·Hg(2+) complex by Hg(2+) sequestration with small biomolecule ligands. In this work, a five base-pair stem with configuration 5'-GGTGG...CCTCC-3' for self-hybridization of MB has been utilized. In this configuration, the four GC base-pair binding energy is not sufficient to hybridize fully at intermediate temperatures and to form a hairpin MB conformation. The T-T mismatch built-in into the stem area can effectively bind Hg(2+) ions creating a bridge, T-Hg-T. We have found that the T-Hg-T bridge strongly enhances the ability of MB to hybridize, as evidenced by an unusually large MB melting temperature shift observed on bridge formation, ΔT(m) = +15.1 ± 0.5 °C, for 100 nM MB in MOPS buffer. The observed ΔT(m) is the largest of the ΔT(m) found for other MBs and dsDNA structures. By fitting the parameters of the proposed model of reversible MB interactions to the experimental data, we have determined the T-Hg-T bridge formation constant at 25 °C, K(1) = 8.92 ± 0.42 × 10(17) M(-1) from mercury(II) titration data and K(1) = 1.04 ± 0.51 × 10(18) M(-1) from the bridge disassembly data; ΔG° = -24.53 ± 0.13 kcal/mol. We have found that the biomarker of oxidative stress and cardiovascular disease, homocysteine (Hcys), can sequester Hg(2+) ions from the T-Hg-T complex and withdraw Hg(2+) ions from MB in the form of stable Hg(Hcys)(2)H(2) complexes. Both the model fitting and independent (1)H NMR results on the thymidine-Hg-Hcys system indicate also the high importance of 1:1 complexes. The high value of K(1) for T-Hg-T bridge formation enables analytical determinations of low concentrations of Hg(2+) (limit of detection LOD = 19 nM or 3.8 ppb, based on 3σ method) and Hcys (LOD = 23 nM, 3σ method). The conditional stability constants for Hg(Hcys)H(2)(2+) and Hg(Hcys)(2)H(2) at 52 °C have been determined, β(112) = 5.37 ± 0.3 × 10(46) M(-3), β(122) = 3.80 ± 0.6 × 10(68) M(-4), respectively.
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Affiliation(s)
- Magdalena Stobiecka
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, United States
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Abstract
Biosensors - classification, characterization and new trendsBiosensors represent promising analytical tools applicable in areas such as clinical diagnosis, food industry, environment monitoring and in other fields, where rapid and reliable analyses are needed. Some biosensors were successfully implemented in the commercial sphere, but majority needs to be improved in order to overcome some imperfections. This review covers the basic types, principles, constructions and use of biosensors as well as new trends used for their fabrication.
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Dispersion of multi-wall carbon nanotubes in polyhistidine: Characterization and analytical applications. Anal Chim Acta 2012; 710:58-64. [DOI: 10.1016/j.aca.2011.10.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 10/22/2011] [Accepted: 10/25/2011] [Indexed: 12/28/2022]
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22
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Shieh YT, Yu TY, Wang TL, Yang CH. Effects of pH on electrocatalytic activity of carbon nanotubes in polyethylenimine composites. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2011.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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23
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Luque GL, Ferreyra NF, Granero A, Bollo S, Rivas GA. Electrooxidation of DNA at glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polyethylenimine. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.07.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tran TO, Lammert EG, Chen J, Merchant SA, Brunski DB, Keay JC, Johnson MB, Glatzhofer DT, Schmidtke DW. Incorporation of single-walled carbon nanotubes into ferrocene-modified linear polyethylenimine redox polymer films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6201-6210. [PMID: 21480616 DOI: 10.1021/la104999f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this study, we describe the effects of incorporating single-walled carbon nanotubes (SWNTs) into redox polymer-enzyme hydrogels. The hydrogels were constructed by combining the enzyme glucose oxidase with a redox polymer (Fc-C(6)-LPEI) in which ferrocene was attached to linear poly(ethylenimine) by a six-carbon spacer. Incorporation of SWNTs into these films changed their morphology and resulted in a significant increase in the enzymatic response at saturating glucose concentrations (3 mA/cm(2)) as compared to films without SWNTs (0.6 mA/cm(2)). Likewise, the sensitivity at 5 mM glucose was significantly increased in the presence of SWNTs (74 μA/cm(2)·mM) as compared to control films (26 μA/cm(2)·mM). We demonstrate that the increase in the electrochemical and enzymatic response of these films depends on the amount of SWNTs incorporated and the method of SWNT incorporation. Furthermore, we report that the presence of SWNTs in thick films allows for more of the ferrocene redox centers to become accessible. The high current densities of the hydrogels should allow for the construction of miniature biosensors and enzymatic biofuel cells.
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Affiliation(s)
- Tu O Tran
- Carbon Nanotube Technology Center, University of Oklahoma, 100 East Boyd, Norman, Oklahoma 73019, United States
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25
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Xu H, Hepel M. “Molecular Beacon”-Based Fluorescent Assay for Selective Detection of Glutathione and Cysteine. Anal Chem 2011; 83:813-9. [DOI: 10.1021/ac102850y] [Citation(s) in RCA: 146] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hui Xu
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, United States
| | - Maria Hepel
- Department of Chemistry, State University of New York at Potsdam, Potsdam, New York 13676, United States
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26
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Nowicka AM, Kowalczyk A, Scholz F, Stojek Z. Changes in Performance of DNA Biosensor Caused by Hydroxyl Radicals. ELECTROANAL 2010. [DOI: 10.1002/elan.201000430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Voltammetric detection of damage to DNA caused by nitro derivatives of fluorene using an electrochemical DNA biosensor. Anal Bioanal Chem 2010; 397:233-241. [DOI: 10.1007/s00216-010-3517-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Revised: 01/04/2010] [Accepted: 01/27/2010] [Indexed: 10/19/2022]
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Jacobs CB, Peairs MJ, Venton BJ. Review: Carbon nanotube based electrochemical sensors for biomolecules. Anal Chim Acta 2010; 662:105-27. [PMID: 20171310 DOI: 10.1016/j.aca.2010.01.009] [Citation(s) in RCA: 567] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Revised: 12/22/2009] [Accepted: 01/05/2010] [Indexed: 11/30/2022]
Abstract
Carbon nanotubes (CNTs) have been incorporated in electrochemical sensors to decrease overpotential and improve sensitivity. In this review, we focus on recent literature that describes how CNT-based electrochemical sensors are being developed to detect neurotransmitters, proteins, small molecules such as glucose, and DNA. Different types of electrochemical methods are used in these sensors including direct electrochemical detection with amperometry or voltammetry, indirect detection of an oxidation product using enzyme sensors, and detection of conductivity changes using CNT-field effect transistors (FETs). Future challenges for the field include miniaturizing sensors, developing methods to use only a specific nanotube allotrope, and simplifying manufacturing.
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Affiliation(s)
- Christopher B Jacobs
- Dept. of Chemistry, University of Virginia, PO Box 400319, Charlottesville, VA 22904, United States
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Nowicka AM, Kowalczyk A, Stojek Z, Hepel M. Nanogravimetric and voltammetric DNA-hybridization biosensors for studies of DNA damage by common toxicants and pollutants. Biophys Chem 2010; 146:42-53. [DOI: 10.1016/j.bpc.2009.10.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 10/05/2009] [Accepted: 10/05/2009] [Indexed: 11/25/2022]
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Guo Q, Ji S, Yue Q, Wang L, Liu J, Jia J. Antioxidant Sensors Based on Iron Diethylenetriaminepentaacetic Acid, Hematin, and Hemoglobin Modified TiO2 Nanoparticle Printed Electrodes. Anal Chem 2009; 81:5381-9. [DOI: 10.1021/ac9005205] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qingqing Guo
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Shujun Ji
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Qiaoli Yue
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Lei Wang
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Jifeng Liu
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Jianbo Jia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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