1
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Damin BIS, Kovalski FC, Fischer J, Piccin JS, Dettmer A. Challenges and perspectives of the β-galactosidase enzyme. Appl Microbiol Biotechnol 2021; 105:5281-5298. [PMID: 34223948 DOI: 10.1007/s00253-021-11423-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 11/29/2022]
Abstract
The enzyme β-galactosidase has great potential for application in the food and pharmaceutical industries due to its ability to perform the hydrolysis of lactose, a disaccharide present in milk and in dairy by-products. It can be used in free form, in batch processes, or in immobilized form, which allows continuous operation and provides greater enzymatic stability. The choice of method and support for enzyme immobilization is essential, as the performance of the biocatalyst is strongly influenced by the properties of the material used and by the interaction mechanisms between support and enzyme. Therefore, this review showed the main enzyme immobilization techniques, and the most used supports for the constitution of biocatalysts. Also, materials with the potential for immobilization of β-galactosidases and the importance of their biotechnological application are presented. KEY POINTS: • The main methods of immobilization are physical adsorption, covalent bonding, and crosslinking. • The structural conditions of the supports are determining factors in the performance of the biocatalysts. • Enzymatic hydrolysis plays an important role in the biotechnology industry.
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Affiliation(s)
- B I S Damin
- Faculty of Agronomy and Veterinary Medicine (FAMV), Postgraduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - F C Kovalski
- Faculty of Engineering and Architecture (FEAR), Chemical Engineering Course, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - J Fischer
- Institute of Exact Sciences and Geosciences (ICEG), Chemical Course, University of Passo Fundo (UPF), Passo Fundo, RS, Brazil.
| | - J S Piccin
- Faculty of Agronomy and Veterinary Medicine (FAMV), Postgraduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
| | - A Dettmer
- Faculty of Agronomy and Veterinary Medicine (FAMV), Postgraduate Program in Food Science and Technology (PPGCTA), University of Passo Fundo (UPF), Passo Fundo, RS, Brazil
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2
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Filik H, Avan AA. Electrochemical and Electrochemiluminescence Dendrimer-based Nanostructured Immunosensors for Tumor Marker Detection: A Review. Curr Med Chem 2021; 28:3490-3513. [PMID: 33076797 DOI: 10.2174/0929867327666201019143647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/06/2020] [Accepted: 09/09/2020] [Indexed: 01/27/2023]
Abstract
The usage of dendrimers or cascade molecules in the biomedical area has recently attracted much attention worldwide. Furthermore, dendrimers are interesting in clinical and pre-clinical applications due to their unique characteristics. Cancer is one of the most widespread challenges and important diseases, which has the highest mortality rate. In this review, the recent advances and developments (from 2009 up to 2019) in the field of electrochemical and electroluminescence immunosensors for detection of the cancer markers are presented. Moreover, this review covers the basic fabrication principles and types of electrochemical and electrochemiluminescence dendrimer-based immunosensors. In this review, we have categorized the current dendrimer based-electrochemical/ electroluminescence immunosensors into five groups: dendrimer/ magnetic particles, dendrimer/ferrocene, dendrimer/metal nanoparticles, thiol-containing dendrimer, and dendrimer/quantum dots based-immunosensors.
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Affiliation(s)
- Hayati Filik
- Istanbul University-Cerrahpasa, Faculty of Engineering, Department of Chemistry, 34320 Avcilar, Istanbul, Turkey
| | - Asiye Aslıhan Avan
- Istanbul University-Cerrahpasa, Faculty of Engineering, Department of Chemistry, 34320 Avcilar, Istanbul, Turkey
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3
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Delyanee M, Akbari S, Solouk A. Amine-terminated dendritic polymers as promising nanoplatform for diagnostic and therapeutic agents' modification: A review. Eur J Med Chem 2021; 221:113572. [PMID: 34087497 DOI: 10.1016/j.ejmech.2021.113572] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/24/2021] [Accepted: 05/07/2021] [Indexed: 12/22/2022]
Abstract
It is often challenging to design diagnostic and therapeutic agents that fulfill all functional requirements. So, bulk and surface modifications as a common approach for biomedical applications have been suggested. There have been considerable research interests in using nanomaterials to the prementioned methods. Among all nanomaterials, dendritic materials with three-dimensional structures, host-guest properties, and nano-polymeric dimensions have received considerable attention. Amine-terminated dendritic structures including, polyamidoamine (PAMAM), polypropyleneimine (PPI), and polyethyleneimine (PEI), have been enormously utilized in bio-modification. This review briefly described the structure of these three common dendritic polymers and their use to modify diagnostic and therapeutic agents in six major applications, including drug delivery, gene delivery, biosensor, bioimaging, tissue engineering, and antimicrobial activity. The current review covers amine-terminated dendritic polymers toxicity challenging and improvement strategies as well.
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Affiliation(s)
- Mahsa Delyanee
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Somaye Akbari
- Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran.
| | - Atefeh Solouk
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
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4
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Elancheziyan M, Senthilkumar S. Redox-active gold nanoparticle-encapsulated poly(amidoamine) dendrimer for electrochemical sensing of 4-aminophenol. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115131] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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5
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Bensana A, Achi F. Analytical performance of functional nanostructured biointerfaces for sensing phenolic compounds. Colloids Surf B Biointerfaces 2020; 196:111344. [PMID: 32877829 DOI: 10.1016/j.colsurfb.2020.111344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 08/09/2020] [Accepted: 08/19/2020] [Indexed: 12/14/2022]
Abstract
Electrochemical biointerfaces are constructed with a wide range of nanomaterials and conducting polymers that strongly affect the analytical performance of biosensors. The analysis of progress toward electrochemical sensing platforms offers opportunities to provide devices for commercial use. The investigation of different methods for the synthesis of phenol biointerfaces leads to design challenges in the field of monitoring phenolic compounds. This paper review the innovative strategies and feature techniques in the construction of phenolic compound biosensors. The focus was made on the preparation methods of nanostructures and nanomaterials design for catalytic improvements of sensing interfaces. The paper also provides a comprehensive overview in the field of enzyme immobilization approaches at solid supports and technical formation of polymer nanocomposites, as well as applications of hybrid organic-inorganic nanocomposites in phenolic biosensors. This review also highlights the recent progress in the electrochemical detection of phenolic compounds and summarizes analytical performance parameters including sensitivity, storage stability, limit of detection, linear range, and Michaelis-Menten kinetic analysis. It also emphasizes advances from the past decade including technical challenges for the construction of suitable biointerfaces for monitoring phenolic compounds.
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Affiliation(s)
- Amira Bensana
- Departement of Process Engineering, Laboratoire de Génie des Procédés Chimiques (LGPC), Faculty of Technology, Ferhat Abbas University Sétif-1-, Setif, 19000, Algeria
| | - Fethi Achi
- Laboratory of Valorisation and Promotion of Saharian Ressources (VPSR), Kasdi Merbah University, Ouargla, 30000, Algeria.
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6
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Electrochemical Immunosensor for Human IgE Using Ferrocene Self-Assembled Monolayers Modified ITO Electrode. BIOSENSORS-BASEL 2020; 10:bios10040038. [PMID: 32295270 PMCID: PMC7235775 DOI: 10.3390/bios10040038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/10/2020] [Accepted: 04/12/2020] [Indexed: 11/17/2022]
Abstract
The immunoglobulin E (IgE) level in serum is an important factor in the examination of allergy. Ferrocene (Fc)-modified self-assembled monolayers (SAMs) were placed on an indium tin oxide (ITO) electrode as a sensing layer for the detection of human IgE. The Fc moiety in the SAMs facilitated the electron transfer through the organic SAMs layer and electrocatalytic signal amplification. The electrochemical measurement was accomplished after the sandwich type immobilization of the receptor antibody, target human IgE, and enzyme conjugated secondary antibody. The enzyme product, p-aminophenol, was quantitatively analyzed by redox cycling via Fc. In addition, the electrochemical impedance spectroscopy (EIS) was investigated for the detection of IgE. The limit of detection (LOD), limit of quantification (LOQ), and dynamic range of the electrochemical sensor were 3 IU/mL, 10 IU/mL, and from 10 IU/mL to 100 IU/mL, respectively.
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7
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Malvano F, Pilloton R, Albanese D. Sensitive Detection of Escherichia coli O157:H7 in Food Products by Impedimetric Immunosensors. SENSORS 2018; 18:s18072168. [PMID: 29976909 PMCID: PMC6068834 DOI: 10.3390/s18072168] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/02/2018] [Accepted: 07/04/2018] [Indexed: 11/16/2022]
Abstract
In this work, the development of an impedimetric label-free immunosensor for the detection of Escherichia coli O157:H7 is reported. Different immobilization techniques of monoclonal anti-E. coli were tested, in order to reach the very low limit of detections. The comparison between the immobilization procedures underlined the advantages of the oriented procedure and the use of a dendrimer, which allowed for immobilizing a higher number of antibody units, reaching a very high sensitivity. However, the use of activated ferrocene as electron-transferring mediator, which improved the electrical properties of the system, resulted in a very low limit of detection equal to 3 cfu/mL. This immunosensor was used to analyze milk and meat samples obtaining a good agreement with the results of the ELISA methods.
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Affiliation(s)
- Francesca Malvano
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
| | - Roberto Pilloton
- Institute of Crystallography of the National Council of Research (CNR), 00015 Monterotondo Scalo, Italy.
| | - Donatella Albanese
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
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8
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Jambrec D, Lammers K, Bobrowski T, Pöller S, Schuhmann W, Ruff A. Amperometric Detection of dsDNA Using an Acridine-Orange-Modified Glucose Oxidase. Chempluschem 2017; 82:1311-1314. [DOI: 10.1002/cplu.201700279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/19/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Daliborka Jambrec
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Klaus Lammers
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Tim Bobrowski
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Sascha Pöller
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
| | - Adrian Ruff
- Analytical Chemistry-Center for Electrochemical Sciences (CES); Ruhr-Universität Bochum; Universitätsstrasse 150 44780 Bochum Germany
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9
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Effect of film-forming solution pH on the properties of chitosan-ferrocene film electrodes. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.02.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Liu P, Bai FQ, Lin DW, Peng HP, Hu Y, Zheng YJ, Chen W, Liu AL, Lin XH. One-pot green synthesis of mussel-inspired myoglobin–gold nanoparticles–polydopamine–graphene polymeric bionanocomposite for biosensor application. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.01.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Chandra S, Gäbler C, Schliebe C, Lang H, Bahadur D. Fabrication of a label-free electrochemical immunosensor using a redox active ferrocenyl dendrimer. NEW J CHEM 2016. [DOI: 10.1039/c6nj00830e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An amperometric immunosensor based on a redox active ferrocenyl end-grafted PAMAM dendrimer provides highly sensitive detection of immunoglobulin, down to 2 ng mL−1.
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Affiliation(s)
- Sudeshna Chandra
- Department of Chemistry
- Sunandan Divatia School of Science
- NMIMS University
- Vile Parle (West) Mumbai-400056
- India
| | - Christian Gäbler
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Christian Schliebe
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Heinrich Lang
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- 09107 Chemnitz
| | - Dhirendra Bahadur
- Department of Metallurgical Engineering and Material Science
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
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12
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Alam MF, Laskar AA, Zubair M, Baig U, Younus H. Immobilization of yeast alcohol dehydrogenase on polyaniline coated silver nanoparticles formed by green synthesis. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2015.06.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Evtyugin GA, Stoikova EE. Electrochemical biosensors based on dendrimers. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815050044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Jia Y, Li J. Molecular assembly of Schiff Base interactions: construction and application. Chem Rev 2014; 115:1597-621. [PMID: 25543900 DOI: 10.1021/cr400559g] [Citation(s) in RCA: 294] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yi Jia
- Beijing National Laboratory for Molecular Sciences, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences , Beijing, 100190, China
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15
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Dey P, Adamovski M, Friebe S, Badalyan A, Mutihac RC, Paulus F, Leimkühler S, Wollenberger U, Haag R. Dendritic polyglycerol-poly(ethylene glycol)-based polymer networks for biosensing application. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8937-8941. [PMID: 24882361 DOI: 10.1021/am502018x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This work describes the formation of a new dendritic polyglycerol-poly(ethylene glycol)-based 3D polymer network as a matrix for immobilization of the redox enzyme periplasmatic aldehyde oxidoreductase to create an electrochemical biosensor. The novel network is built directly on the gold surface, where it simultaneously stabilizes the enzyme for up to 4 days. The prepared biosensors can be used for amperometric detection of benzaldehyde in the range of 0.8-400 μM.
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Affiliation(s)
- Pradip Dey
- Institut für Chemie and Biochemie, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
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16
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Ariga K, Ji Q, Mori T, Naito M, Yamauchi Y, Abe H, Hill JP. Enzyme nanoarchitectonics: organization and device application. Chem Soc Rev 2014; 42:6322-45. [PMID: 23348617 DOI: 10.1039/c2cs35475f] [Citation(s) in RCA: 270] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Fabrication of ultrasmall functional machines and their integration within ultrasmall areas or volumes can be useful for creation of novel technologies. The ultimate goal of the development of ultrasmall machines and device systems is to construct functional structures where independent molecules operate as independent device components. To realize exotic functions, use of enzymes in device structures is an attractive solution because enzymes can be regarded as efficient machines possessing high reaction efficiencies and specificities and can operate even under ambient conditions. In this review, recent developments in enzyme immobilization for advanced functions including device applications are summarized from the viewpoint of micro/nano-level structural control, or nanoarchitectonics. Examples are roughly classified as organic soft matter, inorganic soft materials or integrated/organized media. Soft matter such as polymers and their hybrids provide a medium appropriate for entrapment and encapsulation of enzymes. In addition, self-immobilization based on self-assembly and array formation results in enzyme nanoarchitectures with soft functions. For the confinement of enzymes in nanospaces, hard inorganic mesoporous materials containing well-defined channels play an important role. Enzymes that are confined exhibit improved stability and controllable arrangement, which are useful for formation of functional relays and for their integration into artificial devices. Layer-by-layer assemblies as well as organized lipid assemblies such as Langmuir-Blodgett films are some of the best media for architecting controllable enzyme arrangements. The ultrathin forms of these films facilitate their connection with external devices such as electrodes and transistors. Artificial enzymes and enzyme-mimicking catalysts are finally briefly described as examples of enzyme functions involving non-biological materials. These systems may compensate for the drawbacks of natural enzymes, such as their instabilities under harsh conditions. We believe that enzymes and their mimics will be freely coupled, organized and integrated upon demand in near future technologies.
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Affiliation(s)
- Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan.
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17
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Peng HP, Hu Y, Liu AL, Chen W, Lin XH, Yu XB. Label-free electrochemical immunosensor based on multi-functional gold nanoparticles–polydopamine–thionine–graphene oxide nanocomposites film for determination of alpha-fetoprotein. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2013.10.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Pei X, Xu Z, Zhang J, Liu Z, Tian J. Redox-active and Catalytic-efficient PAMAM Dendrimer Nanostructures for Sensing Low-abundance Protein with Signal Amplification. CHEM LETT 2013. [DOI: 10.1246/cl.130278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xiaomei Pei
- MOE Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University
| | - Zonghui Xu
- MOE Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University
| | - Jiayu Zhang
- MOE Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University
| | - Zhe Liu
- MOE Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University
| | - Jinnian Tian
- MOE Key Laboratory of Food Colloids and Biotechnology, School of Chemical and Material Engineering, Jiangnan University
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19
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Sato K, Anzai JI. Dendrimers in layer-by-layer assemblies: synthesis and applications. Molecules 2013; 18:8440-60. [PMID: 23867653 PMCID: PMC6270364 DOI: 10.3390/molecules18078440] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 07/08/2013] [Accepted: 07/15/2013] [Indexed: 11/16/2022] Open
Abstract
We review the synthesis of dendrimer-containing layer-by-layer (LbL) assemblies and their applications, including biosensing, controlled drug release, and bio-imaging. Dendrimers can be built into LbL films and microcapsules by alternating deposition of dendrimers and counter polymers on the surface of flat substrates and colloidal microparticles through electrostatic bonding, hydrogen bonding, covalent bonding, and biological affinity. Dendrimer-containing LbL assemblies have been used to construct biosensors, in which electron transfer mediators and metal nanoparticles are often coupled with dendrimers. Enzymes have been successfully immobilized on the surface of electrochemical and optical transducers by forming enzyme/dendrimer LbL multilayers. In this way, high-performance enzyme sensors are fabricated. In addition, dendrimer LbL films and microcapsules are useful for constructing drug delivery systems because dendrimers bind drugs to form inclusion complexes or the dendrimer surface is covalently modified with drugs. Magnetic resonance imaging of cancer cells by iron oxide nanoparticles coated with dendrimer LbL film is also discussed.
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Affiliation(s)
| | - Jun-ichi Anzai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan; E-Mail:
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20
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Peng HP, Liang RP, Zhang L, Qiu JD. General preparation of novel core–shell heme protein–Au–polydopamine–Fe3O4 magnetic bionanoparticles for direct electrochemistry. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2013.04.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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An efficient electrochemical disinfection of E. coli and S. aureus in drinking water using ferrocene–PAMAM–multiwalled carbon nanotubes–chitosan nanocomposite modified pyrolytic graphite electrode. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2031-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Jeong B, Akter R, Han OH, Rhee CK, Rahman MA. Increased Electrocatalyzed Performance through Dendrimer-Encapsulated Gold Nanoparticles and Carbon Nanotube-Assisted Multiple Bienzymatic Labels: Highly Sensitive Electrochemical Immunosensor for Protein Detection. Anal Chem 2013; 85:1784-91. [DOI: 10.1021/ac303142e] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - Oc Hee Han
- Analysis
Research Division, Daegu
Center, Korea Basic Science Institute,
Daegu 702-701, South Korea
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23
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Feifel SC, Kapp A, Lisdat F. Protein Multilayer Architectures on Electrodes for Analyte Detection. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2013; 140:253-98. [DOI: 10.1007/10_2013_236] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Zhang P, Zhang L, Zhang L, Zhou J, Wang J, Yan H. Dilational Properties of Novel Amphiphilic Dendrimers at Water–Air and Water–Heptane Interfaces. J Phys Chem B 2012; 116:12760-8. [PMID: 23030314 DOI: 10.1021/jp305619n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pei Zhang
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Colloid, Interface and Chemical
Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Lei Zhang
- Technical
Institute
of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Lu Zhang
- Technical
Institute
of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jizhu Zhou
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Colloid, Interface and Chemical
Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Jinben Wang
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Colloid, Interface and Chemical
Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
| | - Haike Yan
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Colloid, Interface and Chemical
Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R.
China
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25
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Layer-by-layer supramolecular architecture of cyclodextrin-modified PAMAM dendrimers and adamantane-modified peroxidase on gold surface for electrochemical biosensing. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.05.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Li JH, Wang L, Yu HJ, Tan QH, Deng LB, Huo J. Progress in the controllable synthesis of novel ferrocene-based polymers and their applications. Des Monomers Polym 2012. [DOI: 10.1163/156855507780949191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Jian-Hua Li
- a State Key Laboratory of Polymer Reaction Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Li Wang
- b State Key Laboratory of Polymer Reaction Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Hao-Jie Yu
- c State Key Laboratory of Polymer Reaction Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiao-Hua Tan
- d State Key Laboratory of Polymer Reaction Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Li-Bo Deng
- e State Key Laboratory of Polymer Reaction Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jia Huo
- f State Key Laboratory of Polymer Reaction Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China
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Liu J, Zhang X, Pang H, Liu B, Zou Q, Chen J. High-performance bioanode based on the composite of CNTs-immobilized mediator and silk film-immobilized glucose oxidase for glucose/O2 biofuel cells. Biosens Bioelectron 2012; 31:170-5. [DOI: 10.1016/j.bios.2011.10.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 10/02/2011] [Accepted: 10/08/2011] [Indexed: 11/28/2022]
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28
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Altintas Z, Uludag Y, Gurbuz Y, Tothill I. Development of surface chemistry for surface plasmon resonance based sensors for the detection of proteins and DNA molecules. Anal Chim Acta 2011; 712:138-44. [PMID: 22177077 DOI: 10.1016/j.aca.2011.11.026] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 10/26/2011] [Accepted: 11/10/2011] [Indexed: 10/15/2022]
Abstract
The immobilisation of biological recognition elements onto a sensor chip surface is a crucial step for the construction of biosensors. While some of the optical biosensors utilise silicon dioxide as the sensor surface, most of the biosensor surfaces are coated with metals for transduction of the signal. Biological recognition elements such as proteins can be adsorbed spontaneously on metal or silicon dioxide substrates but this may denature the molecule and can result in either activity reduction or loss. Self assembled monolayers (SAMs) provide an effective method to protect the biological recognition elements from the sensor surface, thereby providing ligand immobilisation that enables the repeated binding and regeneration cycles to be performed without losing the immobilised ligand, as well as additionally helping to minimise non-specific adsorption. Therefore, in this study different surface chemistries were constructed on SPR sensor chips to investigate protein and DNA immobilisation on Au surfaces. A cysteamine surface and 1%, 10% and 100% mercaptoundecanoic acid (MUDA) coatings with or without dendrimer modification were utilised to construct the various sensor surfaces used in this investigation. A higher response was obtained for NeutrAvidin immobilisation on dendrimer modified surfaces compared to MUDA and cysteamine layers, however, protein or DNA capture responses on the immobilised NeutrAvidin did not show a similar higher response when dendrimer modified surfaces were used.
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Affiliation(s)
- Zeynep Altintas
- Cranfield University, Cranfield Health, Cranfield, Bedfordshire, UK
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29
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Kong FY, Xu MT, Xu JJ, Chen HY. A novel lable-free electrochemical immunosensor for carcinoembryonic antigen based on gold nanoparticles–thionine–reduced graphene oxide nanocomposite film modified glassy carbon electrode. Talanta 2011; 85:2620-5. [DOI: 10.1016/j.talanta.2011.08.028] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 08/10/2011] [Accepted: 08/13/2011] [Indexed: 01/20/2023]
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30
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Husain Q, Ansari SA, Alam F, Azam A. Immobilization of Aspergillus oryzae β galactosidase on zinc oxide nanoparticles via simple adsorption mechanism. Int J Biol Macromol 2011; 49:37-43. [DOI: 10.1016/j.ijbiomac.2011.03.011] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 03/16/2011] [Accepted: 03/17/2011] [Indexed: 10/18/2022]
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31
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Peng HP, Liang RP, Zhang L, Qiu JD. Sonochemical synthesis of magnetic core–shell Fe3O4@ZrO2 nanoparticles and their application to the highly effective immobilization of myoglobin for direct electrochemistry. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.01.090] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Hu YF, Zhang ZH, Zhang HB, Luo LJ, Yao SZ. Electrochemical determination of l-phenylalanine at polyaniline modified carbon electrode based on β-cyclodextrin incorporated carbon nanotube composite material and imprinted sol–gel film. Talanta 2011; 84:305-13. [DOI: 10.1016/j.talanta.2011.01.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Revised: 12/22/2010] [Accepted: 01/06/2011] [Indexed: 10/18/2022]
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33
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Choi YB, Tae GS. Simple Electrochemical Immunosensor for the Detection of Hippuric Acid on the Screen-printed Carbon Electrode Modified Gold Nanoparticles. JOURNAL OF THE KOREAN ELECTROCHEMICAL SOCIETY 2011. [DOI: 10.5229/jkes.2011.14.1.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Han YD, Song SY, Lee JH, Lee DS, Yoon HC. Multienzyme-modified biosensing surface for the electrochemical analysis of aspartate transaminase and alanine transaminase in human plasma. Anal Bioanal Chem 2011; 400:797-805. [DOI: 10.1007/s00216-011-4797-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Revised: 02/08/2011] [Accepted: 02/09/2011] [Indexed: 11/28/2022]
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35
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Aminated dendritic surfaces characterization: a rapid and versatile colorimetric assay for estimating the amine density and coating stability. Anal Bioanal Chem 2011; 399:2295-302. [DOI: 10.1007/s00216-010-4612-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 12/09/2010] [Accepted: 12/13/2010] [Indexed: 10/18/2022]
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36
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Satija J, Sai VVR, Mukherji S. Dendrimers in biosensors: Concept and applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10527b] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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37
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Peng HP, Liang RP, Qiu JD. Facile synthesis of Fe(3)O(4)@Al(2)O(3) core-shell nanoparticles and their application to the highly specific capture of heme proteins for direct electrochemistry. Biosens Bioelectron 2010; 26:3005-11. [PMID: 21185712 DOI: 10.1016/j.bios.2010.12.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2010] [Revised: 12/01/2010] [Accepted: 12/01/2010] [Indexed: 10/18/2022]
Abstract
In this study, magnetic core-shell Fe(3)O(4)@Al(2)O(3) nanoparticles (NPs) attached to the surface of a magnetic glassy carbon electrode (MGCE) were used as a functional interface to immobilize several heme proteins including hemoglobin (Hb), myoglobin (Mb) and horseradish peroxidase (HRP) for fabricating protein/Fe(3)O(4)@Al(2)O(3) film. Transmission electron microscope, UV-vis spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry were used to characterize the films. With the advantages of the magnetism and the excellent biocompatibility of the Fe(3)O(4)@Al(2)O(3) NPs, the protein/Fe(3)O(4)@Al(2)O(3) film could be easily fabricated in the present of external magnetic field, and well retained the bioactivity of the immobilized proteins, hence dramatically facilitated direct electron transfer of heme proteins and excellent electrocatalytic behaviors towards H(2)O(2) were demonstrated. The presented system avoids the complex synthesis for protecting Fe(3)O(4) NPs, supplies a facile, low cost and universal way to immobilize proteins, and is promising for construction of third-generation biosensors and other bio-magnetic induction devices.
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Affiliation(s)
- Hua-Ping Peng
- Department of Chemistry and Institute for Advanced Study, Nanchang University, Xue Fu Da Dao 999, Nanchang 330031, China
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38
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Lee JY, Kim BK, Hwang SP, Lee YH, Kwak JH. Label-Free Electrochemical DNA Detection Based on Electrostatic Interaction between DNA and Ferrocene Dendrimers. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.11.3099] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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Qiu JD, Cui SG, Liang RP. Hydrogen peroxide biosensor based on the direct electrochemistry of myoglobin immobilized on ceria nanoparticles coated with multiwalled carbon nanotubesby a hydrothermal synthetic method. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0440-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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de Dios AS, Díaz-García ME. Multifunctional nanoparticles: analytical prospects. Anal Chim Acta 2010; 666:1-22. [PMID: 20433959 PMCID: PMC7094252 DOI: 10.1016/j.aca.2010.03.038] [Citation(s) in RCA: 218] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2009] [Revised: 03/16/2010] [Accepted: 03/18/2010] [Indexed: 01/12/2023]
Abstract
Multifunctional nanoparticles are among the most exciting nanomaterials with promising applications in analytical chemistry. These applications include (bio)sensing, (bio)assays, catalysis and separations. Although most of these applications are based on the magnetic, optical and electrochemical properties of multifunctional nanoparticles, other aspects such as the synergistic effect of the functional groups and the amplification effect associated with the nanoscale dimension have also been observed. Considering not only the nature of the raw material but also the shape, there is a huge variety of nanoparticles. In this review only magnetic, quantum dots, gold nanoparticles, carbon and inorganic nanotubes as well as silica, titania and gadolinium oxide nanoparticles are addressed. This review presents a narrative summary on the use of multifunctional nanoparticles for analytical applications, along with a discussion on some critical challenges existing in the field and possible solutions that have been or are being developed to overcome these challenges.
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Affiliation(s)
| | - Marta Elena Díaz-García
- University of Oviedo, Department of Physical and Analytical Chemistry, Faculty of Chemistry, Av. Julián Clavería, 8, 33006 Oviedo, Spain
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41
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Dendrimers containing ferrocene and porphyrin moieties: synthesis and cubic non-linear optical behavior. Molecules 2010; 15:2564-75. [PMID: 20428064 PMCID: PMC6257368 DOI: 10.3390/molecules15042564] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Revised: 02/06/2010] [Accepted: 03/30/2010] [Indexed: 11/16/2022] Open
Abstract
Dendrons with ferrocenyl ended groups joined by styryl moieties were attached to a porphyrin core. All the dendrons used for dendrimer synthesis showed trans configuration. The chemical structure of the first generation dendron was confirmed by X-ray crystallographic studies. The structure of the synthesized dendrimers was confirmed by 1H- and 13C-NMR, electrospray mass spectrometry and elemental analysis. Cubic non-linear optical behavior of the ferrocene and porphyrin-containing dendrimers was studied in solid thin films by THG Maker-Fringe technique at 1,260 nm.
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42
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Liu X, Wang F, Han S, Shi L, Xu G. Self-Assembly of Gold Nanoparticles/Electroactive Polyelectrolyte Multilayer Films for Tunable Electrocatalysis. ELECTROANAL 2010. [DOI: 10.1002/elan.200900479] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Selective determination of dopamine in the presence of ascorbic acid using ferrocenyl-tethered PAMAM dendrimers modified glassy carbon electrode. J APPL ELECTROCHEM 2010. [DOI: 10.1007/s10800-010-0105-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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44
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Qiu JD, Peng HP, Liang RP, Xia XH. Facile preparation of magnetic core–shell Fe3O4@Au nanoparticle/myoglobin biofilm for direct electrochemistry. Biosens Bioelectron 2010; 25:1447-53. [DOI: 10.1016/j.bios.2009.10.043] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 10/08/2009] [Accepted: 10/28/2009] [Indexed: 11/30/2022]
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45
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Akin M, Yuksel M, Geyik C, Odaci D, Bluma A, Höpfner T, Beutel S, Scheper T, Timur S. Alcohol biosensing by polyamidoamine (PAMAM)/cysteamine/alcohol oxidase-modified gold electrode. Biotechnol Prog 2010; 26:896-906. [DOI: 10.1002/btpr.372] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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46
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Enzyme-Encapsulated Layer-by-Layer Assemblies: Current Status and Challenges Toward Ultimate Nanodevices. MODERN TECHNIQUES FOR NANO- AND MICROREACTORS/-REACTIONS 2010. [DOI: 10.1007/12_2009_42] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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47
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Nie D, Liang Y, Zhou T, Li X, Shi G, Jin L. Electrochemistry and electrocatalytic of hemoglobin immobilized on FDU-15-Pt mesoporous materials. Bioelectrochemistry 2009; 79:248-53. [PMID: 20064750 DOI: 10.1016/j.bioelechem.2009.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 11/24/2009] [Accepted: 12/08/2009] [Indexed: 10/20/2022]
Abstract
In this paper, the composite films of Nafion/Hb/FDU-Pt-15/PDDA were constructed by layer-by-layer assembly technique. The FDU-15-Pt mesoporous materials were synthesized and characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The resulting films were verified by electrochemical impedance spectroscopy (EIS), cyclic voltammetry and UV-vis spectroscopy. The direct electrochemical and electrocatalytic properties of hemoglobin (Hb) in the Nafion/Hb/FDU-15-Pt/PDDA films were also investigated. A pair of stable and well-defined reversible redox peaks was observed and the formal potential of Hb Fe(III)/Fe(II) redox couple was found to be -0.324 V (vs. SCE). Based on a series of optimized conditions, the films modified electrode displayed a good electrocatalytic activity to the reduction of hydrogen peroxide (H2O2), which had linear current response from 2.0 x 10(-6) M to 6.0 x 10(-2) M with the detection limit of 1.0 x 10(-6) M (S/N=3). The apparent Michaelis-Menten constant (K(m)(app)) was determined to be 0.15 mM in the range of lower concentration of H2O2. The apparent heterogeneous electron transfer rate constant (k(s)) was 1.05 +/- 0.03 s(-1). The good sensitivity, reproducibility, excellent stability and wide linear range make Nafion/Hb/FDU-15-Pt/PDDA a promising application of the preparation of third-generation biosensor.
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Affiliation(s)
- Dongxia Nie
- Department of Chemistry and Shanghai Key Laboratory of Green Chemistry and Chemical Process, East China Normal University, 3663 Zhongshan Road(N), Shanghai 200062, PR China
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48
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Frasconi M, Deriu D, D'Annibale A, Mazzei F. Nanostructured materials based on the integration of ferrocenyl-tethered dendrimer and redox proteins on self-assembled monolayers: an efficient biosensor interface. NANOTECHNOLOGY 2009; 20:505501. [PMID: 19907072 DOI: 10.1088/0957-4484/20/50/505501] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this paper we report the use of ferrocenyl-tethered dendrimer (Fc-D) as an electrode modifier supported by a self-assembled monolayer coated gold surface. The pretreatment of electrodes with Fc-D allows the covalent immobilization of glucose oxidase. The resulting integrated hybrid system provides electrical contact between the redox center of the enzyme and the electrode, and improves the overall bioelectrocatalyzed oxidation of glucose. Cyclic voltammetry combined with surface plasmon resonance (SPR) is used to investigate the redox-induced orientation changes of ferrocene-tethered dendrimers and the optimal electrical wiring of the enzyme, depending on the length of the alkyl chain of the ferrocene-tethered groups. The amount of substrate controls the steady-state concentration ratio of Fc/Fc(+) in the film composition. Therefore, the SPR spectrum of the film is controlled by the reversible change in the refractive index of the enzyme-integrated redox film. The proposed method demonstrates a new procedure for developing a stable amperometric redox enzyme-based sensor by designing a new nanostructured material that control the biosensing performance.
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Affiliation(s)
- Marco Frasconi
- Department of Chemistry and Drug Technologies, Sapienza University of Rome, Piazzale Aldo Moro, 500185 Rome, Italy
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49
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Lee TY, Chiang PR, Tsai MC, Lin CY, Huang JH. From diacetylferrocene to 1,1′-ferrocenyldiimines: Substituent effects on synthesis, molecular structure, electrochemical behavior and optical absorption property. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2009.06.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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Mansouri S, Winnik FM, Tabrizian M. Modulating the release kinetics through the control of the permeability of the layer-by-layer assembly: a review. Expert Opin Drug Deliv 2009; 6:585-97. [PMID: 19480609 DOI: 10.1517/17425240902967599] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The layer-by-layer (LbL) self-assembly technique has emerged as a simple and versatile method for coating biological and non-biological templates for various biomedical applications. A promising avenue of this technique lies in the encapsulation of drugs and other biological substances for controlled release. Fundamental studies of LbL assembly on flat surfaces have provided a sound understanding of film deposition theory and its pertinence to ionic and molecular transport and diffusion through polyelectrolyte multilayer (PEM) films. However, there is a lack of information on the permeability of three-dimensional PEM shell systems. In either PEM films or shells, it has been shown that drug release is a function of the ionic strength, pH and/or multilayer thickness. This report aims to provide an overview of the physicochemical parameters affecting the permeability of two- and three-dimensional multilayer shells, including ionic strength, layer number and pH. Furthermore, their synergic effect on loading and release of biologically active molecules from LbL multilayers are discussed.
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Affiliation(s)
- Sania Mansouri
- McGill University, Department of Biomedical Engineering, Duff Medical Science Building, 3775 University Street, Montreal, QC, H3A 2B4, Canada
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