251
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Chen A, Du D, Lin Y. Highly sensitive and selective immuno-capture/electrochemical assay of acetylcholinesterase activity in red blood cells: a biomarker of exposure to organophosphorus pesticides and nerve agents. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:1828-1833. [PMID: 22208309 DOI: 10.1021/es202689u] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Acetylcholinesterase (AChE) enzyme activity in red blood cells (RBCs) is a useful biomarker for biomonitoring of exposures to organophosphorus (OP) pesticides and chemical nerve agents. In this paper, we reported a new method for AChE activity assay based on selective immuno-capture of AChE from biological samples followed by enzyme activity assay of captured AChE using a disposable electrochemical sensor. The electrochemical sensor is based on multiwalled carbon nanotubes-gold (MWCNTs-Au) nanocomposites modified screen printed carbon electrode (SPCE), which is used for the immobilization of AChE specific antibody. Upon the completion of immunoreaction, the target AChE (including active and inhibited) is captured onto the electrode surface and followed by an electrochemical detection of enzymatic activity in the presence of acetylthiocholine. A linear response is obtained over standard AChE concentration range from 0.1 to 10 nM. To demonstrate the capability of this new biomonitoring method, AChE solutions dosed with different concentrations of paraoxon were used to validate the new AChE assay method. AChE inhibition in OP dosed solutions was proportional to OP concentration from 0.2 to 50 nM. The new AChE activity assay method for biomonitoring of OP exposure was further validated with in vitro paraoxon-dosed RBC samples. The established electrochemical sensing platform for AChE activity assay not only avoids the problem of overlapping substrate specificity with esterases by using selective antibody, but also eliminates potential interference from other electroactive species in biological samples. It offers a new approach for sensitive, selective, and rapid AChE activity assay for biomonitoring of exposure to OPs.
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Affiliation(s)
- Aiqiong Chen
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
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252
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Wang S, Tian H, Pei Y, Meng Q, Chen J, Wang H, Zeng Y, Zheng W, Liu Y. Controllable synthesis of a novel hedgehog-like core/shell structure. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2011.12.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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253
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Abstract
Signal amplification based on biofunctional nanomaterials has recently attracted considerable attention due to the need for ultrasensitive bioassays and the trend towards miniaturized assays. The biofunctional nanomaterials can not only produce a synergic effect among catalytic activity, conductivity and biocompatibility to accelerate the signal transduction, but also provide amplified recognition events by high loading of signal tags, leading to a highly sensitive and specific biosensing. Most importantly, nanoscaled materials are in direct contact with the environment, which permits them to act as chemical and biological sensors in single-molecule detection of biomolecules. In this tutorial review, we will focus on recent significant advances in signal amplification strategies combining the cross-disciplines of chemistry, biology, and materials science, and highlight some elegant applications of biofunctional nanomaterials as excellent electronic or optical signal tags in ultrasensitive bioanalysis. The biofunctional nanomaterials-based biosensing opens a series of concepts for basic research and offers new tools for detection of trace amounts of a wide variety of analytes in clinical, environmental, and industrial applications.
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Affiliation(s)
- Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210093, PR China
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254
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Affiliation(s)
- Danielle W. Kimmel
- Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, VU Station B 351822, Nashville, TN 37235-1822
| | - Gabriel LeBlanc
- Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, VU Station B 351822, Nashville, TN 37235-1822
| | - Mika E. Meschievitz
- Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, VU Station B 351822, Nashville, TN 37235-1822
| | - David E. Cliffel
- Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, VU Station B 351822, Nashville, TN 37235-1822
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255
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Liu Y, Dong X, Chen P. Biological and chemical sensors based on graphene materials. Chem Soc Rev 2012; 41:2283-307. [DOI: 10.1039/c1cs15270j] [Citation(s) in RCA: 1399] [Impact Index Per Article: 116.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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256
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257
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Wang G, Huang H, Wang B, Zhang X, Wang L. A supersandwich multienzyme–DNA label based electrochemical immunosensor. Chem Commun (Camb) 2012; 48:720-2. [DOI: 10.1039/c1cc15383h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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258
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Dai H, Yang C, Tong Y, Xu G, Ma X, Lin Y, Chen G. Label-free electrochemiluminescent immunosensor for α-fetoprotein: performance of Nafion–carbon nanodots nanocomposite films as antibody carriers. Chem Commun (Camb) 2012; 48:3055-7. [DOI: 10.1039/c1cc16571b] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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259
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Zhang B, Tang D, Liu B, Cui Y, Chen H, Chen G. Nanogold-functionalized magnetic beads with redox activity for sensitive electrochemical immunoassay of thyroid-stimulating hormone. Anal Chim Acta 2012; 711:17-23. [DOI: 10.1016/j.aca.2011.10.049] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 10/24/2011] [Accepted: 10/25/2011] [Indexed: 02/05/2023]
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260
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Chen A, Bao Y, Ge X, Shin Y, Du D, Lin Y. Magnetic particle-based immunoassay of phosphorylated p53 using protein cage templated lead phosphate and carbon nanospheres for signal amplification. RSC Adv 2012. [DOI: 10.1039/c2ra20994b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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261
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Lin H, Huo J, Zhang A, Liu Y, Wang Q, Cai Y, Ying W, Qin W, Zhang Y, Qian X. A sensitive dual signal amplification method for western blotting based on antibody-functionalised graphene oxide and gold nanoparticles. Analyst 2012; 137:3620-3. [DOI: 10.1039/c2an35242g] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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262
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Posthuma-Trumpie GA, Wichers JH, Koets M, Berendsen LBJM, van Amerongen A. Amorphous carbon nanoparticles: a versatile label for rapid diagnostic (immuno)assays. Anal Bioanal Chem 2012; 402:593-600. [PMID: 21904801 PMCID: PMC3249172 DOI: 10.1007/s00216-011-5340-5] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 08/13/2011] [Accepted: 08/15/2011] [Indexed: 12/16/2022]
Abstract
Carbon nanoparticles (CNPs) labeled with reporter molecules can serve as signaling labels in rapid diagnostic assays as an alternative to gold, colored latex, silica, quantum dots, or up-converting phosphor nanoparticles. Detailed here is the preparation of biomolecule-labeled CNPs and examples of their use as a versatile label. CNPs can be loaded with a range of biomolecules, such as DNA, antibodies, and proteins (e.g., neutravidin or a fusion protein of neutravidin with an enzyme), and the resulting conjugates can be used to detect analytes of high or low molecular mass.
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Affiliation(s)
| | - Jan H. Wichers
- Food and Biobased Research, Wageningen University and Research Centre, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Marjo Koets
- Food and Biobased Research, Wageningen University and Research Centre, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Luciënne B. J. M. Berendsen
- Food and Biobased Research, Wageningen University and Research Centre, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Aart van Amerongen
- Food and Biobased Research, Wageningen University and Research Centre, P.O. Box 17, 6700 AA Wageningen, The Netherlands
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263
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Murakami T, Arima Y, Toda M, Takiguchi H, Iwata H. Effect of dielectric spacer thickness on signal intensity of surface plasmon field-enhanced fluorescence spectroscopy. Anal Biochem 2011; 421:632-9. [PMID: 22226791 DOI: 10.1016/j.ab.2011.12.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2011] [Revised: 12/01/2011] [Accepted: 12/02/2011] [Indexed: 11/28/2022]
Abstract
Surface plasmon field-enhanced fluorescence spectroscopy (SPFS) combines enhanced field platform and fluorescence detection. Its advantages are the strong intensity of the electromagnetic field and the high signal/noise (S/N) ratio due to the localized evanescent field at the water/metal interface. However, the energy transfer from the fluorophore to the metal surface diminishes the fluorescence intensity, and this reduces the sensitivity. In this study, we tested whether polystyrene (PSt) could act as a dielectric layer to suppress the energy transfer from the fluorophore to the metal surface. We hypothesized that this would improve the sensitivity of SPFS-based immunoassays. We used α-fetoprotein (AFP) as a model tumor biomarker in the sandwich-type immunoassay. We determined the relationship between fluorescent signal intensity and PSt layer thickness and compared this to theoretical predictions. We found that the fluorescence signal increased by optimally controlling the thickness of the PSt layer. Our results indicated that the SPFS-based immunoassay is a promising clinical diagnostic tool for quantitatively determining the concentrations of low-level biomarkers in blood samples.
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Affiliation(s)
- Takashi Murakami
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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264
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Affiliation(s)
- Francis P. Zamborini
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292,
United States
| | - Lanlan Bao
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292,
United States
| | - Radhika Dasari
- Department
of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712, United States
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265
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Du Y, Guo S, Dong S, Wang E. An integrated sensing system for detection of DNA using new parallel-motif DNA triplex system and graphene–mesoporous silica–gold nanoparticle hybrids. Biomaterials 2011; 32:8584-92. [DOI: 10.1016/j.biomaterials.2011.07.091] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 07/31/2011] [Indexed: 12/25/2022]
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266
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A Sandwich-type Amperometric Immunosensor Based on One-dimensional Assembly of Magnetic DNA Nanoprobes. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2011. [DOI: 10.1016/s1872-2040(10)60479-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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267
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Gan N, Jia L, Zheng L. A sandwich electrochemical immunosensor using magnetic DNA nanoprobes for carcinoembryonic antigen. Int J Mol Sci 2011; 12:7410-23. [PMID: 22174606 PMCID: PMC3233412 DOI: 10.3390/ijms12117410] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 09/23/2011] [Accepted: 10/21/2011] [Indexed: 11/16/2022] Open
Abstract
A novel magnetic nanoparticle-based electrochemical immunoassay of carcinoembryonic antigen (CEA) was designed as a model using CEA antibody-functionalized magnetic beads [DNA/Fe3O4/ZrO2; Fe3O4 (core)/ZrO2 (shell) nano particles (ZMPs)] as immunosensing probes. To design the immunoassay, the CEA antibody and O-phenylenediamine (OPD) were initially immobilized on a chitosan/nano gold composite membrane on a glassy carbon electrode (GCE/CS-nano Au), which was used for CEA recognition. Then, horseradish peroxidase (HRP)-labeled anti-CEA antibodies (HRP-CEA Ab2) were bound to the surface of the synthesized magnetic ZMP nanoparticles as signal tag. Thus, the sandwich-type immune complex could be formed between secondary antibody (Ab2) modified DNA/ZMPs nanochains tagged by HRP and GCE/CS-nano Au. Unlike conventional nanoparticle-based electrochemical immunoassays, the recognition elements of this immunoassay included both electron mediators and enzyme labels, which obviously simplifies the electrochemical measurement process. The sandwich-type immunoassay format was used for online formation of the immunocomplex of CEA captured in the detection cell with an external magnet. The electrochemical signals derived from HRP during the reduction of H2O2 with OPD as electron mediator were measured. The method displayed a high sensitivity for CEA detection in the range of 0.008–200 ng/mL, with a detection limit of 5 pg/mL (estimated at a signal-to-noise ratio of 3). The precision, reproducibility, and stability of the immunoassay were good. The use of the assay was evaluated with clinical serum samples, and the results were in excellent accordance with those obtained using the standard enzyme-linked immunosorbent assay (ELISA) method. Thus, the magnetic nanoparticle-based assay format is a promising approach for clinical applications, and it could be further developed for the detection of other biomarkers in cancer diagnosis.
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Affiliation(s)
- Ning Gan
- The State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (N.G.); (L.Z.); Tel.: +86-574-8760-9983 (N.G.); +86-20-6164-2147 (L.Z.); Fax: +86-574-8760-0734 (N.G.); +86-20-6164-2147 (L.Z.)
| | - Liyong Jia
- The State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang, China; E-Mail:
- Clinical Laboratory Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Lei Zheng
- Clinical Laboratory Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, China
- Authors to whom correspondence should be addressed; E-Mails: (N.G.); (L.Z.); Tel.: +86-574-8760-9983 (N.G.); +86-20-6164-2147 (L.Z.); Fax: +86-574-8760-0734 (N.G.); +86-20-6164-2147 (L.Z.)
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268
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Gan N, Jia L, Zheng L. A Novel Sandwich Electrochemical Immunosensor Based on the DNA-Derived Magnetic Nanochain Probes for Alpha-Fetoprotein. JOURNAL OF AUTOMATED METHODS & MANAGEMENT IN CHEMISTRY 2011; 2011:957805. [PMID: 22013390 PMCID: PMC3195772 DOI: 10.1155/2011/957805] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 08/10/2011] [Accepted: 08/11/2011] [Indexed: 05/31/2023]
Abstract
One novel electrochemical immunosensor was constructed by immobilizing capture antibody of alpha-fetoprotein (AFP Ab(1)) on a nafion/nanogold-particle modified glassy carbon electrode. With a sandwich immunoassay, one DNA-derived magnetic nanoprobe, simplified as DNA/(ZMPs-HRP-AFP Ab(2))(n), was employed for the detection of AFP. The fabricated procedure of the proposed biosensor was characterized by cyclic voltammetry and electrochemical impedance spectroscopy. The performance and factors influencing the performance of the biosensor were also evaluated. Under optimal conditions, the developed biosensor exhibited a well-defined electrochemical behavior toward the reduction of AFP ranging from 0.01 to 200 ng/mL with a detection limit of 4 pg/mL (S/N = 3). The biosensor was applied to the determination of AFP in serum with satisfactory results. It is important to note that the sandwich nanochainmodified electro-immunosensor provided an alternative substrate for the immobilization of other tumor markers.
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Affiliation(s)
- Ning Gan
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Liyong Jia
- State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- Clinical Laboratory Center, Nanfang Hospital, Southern Medical University, Guangdong, 510515, China
| | - Lei Zheng
- Clinical Laboratory Center, Nanfang Hospital, Southern Medical University, Guangdong, 510515, China
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269
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Silver nanowire–graphene hybrid nanocomposites as label for sensitive electrochemical immunoassay of alpha-fetoprotein. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.05.128] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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270
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Kong FY, Xu-Zhu, Xu MT, Xu JJ, Chen HY. Gold nanoparticle/DNA/methylene blue nanocomposites for the ultrasensitive electrochemical detection of carcinoembryonic antigen. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.08.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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271
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Sensitive sandwich electrochemical immunosensor for alpha fetoprotein based on prussian blue modified hydroxyapatite. Biosens Bioelectron 2011; 28:112-6. [DOI: 10.1016/j.bios.2011.07.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 07/04/2011] [Accepted: 07/06/2011] [Indexed: 10/18/2022]
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272
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Su B, Tang D, Tang J, Li Q, Chen G. An organic–inorganic hybrid nanostructure-functionalized electrode for electrochemical immunoassay of biomarker by using magnetic bionanolabels. Anal Biochem 2011; 417:89-96. [DOI: 10.1016/j.ab.2011.06.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 05/20/2011] [Accepted: 06/01/2011] [Indexed: 01/31/2023]
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273
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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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274
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Tang Z, Wu H, Zhang Y, Li Z, Lin Y. Enzyme-Mimic Activity of Ferric Nano-Core Residing in Ferritin and Its Biosensing Applications. Anal Chem 2011; 83:8611-6. [DOI: 10.1021/ac202049q] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zhiwen Tang
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Hong Wu
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Youyu Zhang
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Zhaohui Li
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yuehe Lin
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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275
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Guo S, Du Y, Yang X, Dong S, Wang E. Solid-state label-free integrated aptasensor based on graphene-mesoporous silica-gold nanoparticle hybrids and silver microspheres. Anal Chem 2011; 83:8035-40. [PMID: 21910432 DOI: 10.1021/ac2019552] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Taking advantage of strand-displacement DNA polymerization and parallel-motif DNA triplex system as dual amplifications, a new electrochemical label-free integrated aptasensor based on silver microspheres (SMSs) as a separation element and graphene-mesoporous silica-gold nanoparticle (NP) hybrids (GSGHs) as an enhanced element of the sensing platform was first reported. In this sensing design (schematic representation of the sensing procedure for adenosine triphosphate detection, Scheme 1 in manuscript text), which contains an enhanced three-step magnification process, SMSs with "clean" surface were first used to separate the undesirable aptamer and aptamer-adenosine triphosphate (ATP) complex attached on SMSs surface after aptamer-ATP interaction, which lead to the detachment of blocker DNA into the solution phase. Then, under the assistance of blocker DNA, an amplified method based on the inherent signal-transduction mechanism of the hairpin probe and strand-displacement property of DNA polymerase was introduced. The obtained duplex DNA was used to hybridize with an acceptor DNA assembled on electrode to form triplex DNA, which could bring a more obvious detection signal compared with the duplex DNA without the amplification. The electrochemical signal came from the GSGH-based enhanced sensing interface containing positively charged ferrocene-appended poly(ethyleneimine) (Fc-PEI). Using the above multiple effects, we could achieve the sensitive analysis of a model small molecule-ATP (an important "molecular currency" of intracellular energy transfer) in a wide detection range from 0.05 nM to 56.5 nM with the detection limit of 0.023 nM.
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Affiliation(s)
- Shaojun Guo
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China
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276
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Graphene-promoted 3,4,9,10-perylenetetracarboxylic acid nanocomposite as redox probe in label-free electrochemical aptasensor. Biosens Bioelectron 2011; 30:123-7. [PMID: 21944184 DOI: 10.1016/j.bios.2011.08.041] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 08/27/2011] [Accepted: 08/29/2011] [Indexed: 11/23/2022]
Abstract
Graphene/3,4,9,10-perylenetetracarboxylic acid (GPD) with three-dimensional porous structure has been successfully synthesized and served as redox probe to construct ultrasensitive electrochemical aptasensor. The GPD nanocomposite shows promoted electrochemical redox-activity of 3,4,9,10-perylenetetracarboxylic acid (PTCA) with an obvious well-defined cathodic peak from -0.7 to 0 V that never been seen from graphene or PTCA, which avoids miscellaneous redox peaks of PTCA in electrochemical characterization, offering a novel redox probe for electrochemical sensors with highly electrochemical active area and conductivity. To the best of our knowledge, this is the first study that utilizes PTCA self-derived redox-activity as redox probe in electrochemical sensors. Moreover, the interesting GPD possesses the advantages of membrane-forming property, providing a direct immobilization of redox probes on electrode surface. This simple process not only diminishes the conventional fussy immobilization of redox probes on the electrode surface, but also reduces the participation of the membrane materials that acted as a barrier of the electron propagation in redox probe immobilization. With thrombin as a model target, the redox probe-GPD based label-free electrochemical aptasensor shows a much higher sensitivity (a detection range from 0.001 nM to 40 nM with a detection limit of 200 fM) to that of analogous aptasensors produced from other redox probes.
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277
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Zhang Y, Deng S, Lei J, Xu Q, Ju H. Carbon nanospheres enhanced electrochemiluminescence of CdS quantum dots for biosensing of hypoxanthine. Talanta 2011; 85:2154-8. [DOI: 10.1016/j.talanta.2011.07.059] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 07/13/2011] [Accepted: 07/17/2011] [Indexed: 11/16/2022]
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278
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Leng C, Wu J, Xu Q, Lai G, Ju H, Yan F. A highly sensitive disposable immunosensor through direct electro-reduction of oxygen catalyzed by palladium nanoparticle decorated carbon nanotube label. Biosens Bioelectron 2011; 27:71-6. [DOI: 10.1016/j.bios.2011.06.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 06/13/2011] [Indexed: 10/18/2022]
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279
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Du D, Wang J, Lu D, Dohnalkova A, Lin Y. Multiplexed Electrochemical Immunoassay of Phosphorylated Proteins Based on Enzyme-Functionalized Gold Nanorod Labels and Electric Field-Driven Acceleration. Anal Chem 2011; 83:6580-5. [DOI: 10.1021/ac2009977] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Dan Du
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jun Wang
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Donglai Lu
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Alice Dohnalkova
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yuehe Lin
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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280
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Xie Y, Chen A, Du D, Lin Y. Graphene-based immunosensor for electrochemical quantification of phosphorylated p53 (S15). Anal Chim Acta 2011; 699:44-8. [DOI: 10.1016/j.aca.2011.05.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 04/28/2011] [Accepted: 05/08/2011] [Indexed: 10/18/2022]
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281
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Teng Y, Zhang X, Fu Y, Liu H, Wang Z, Jin L, Zhang W. Optimized ferrocene-functionalized ZnO nanorods for signal amplification in electrochemical immunoassay of Escherichia coli. Biosens Bioelectron 2011; 26:4661-6. [DOI: 10.1016/j.bios.2011.04.017] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 04/07/2011] [Accepted: 04/10/2011] [Indexed: 01/25/2023]
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282
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Qu F, Lu H, Yang M, Deng C. Electrochemical immunosensor based on electron transfer mediated by graphene oxide initiated silver enhancement. Biosens Bioelectron 2011; 26:4810-4. [DOI: 10.1016/j.bios.2011.06.018] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 05/31/2011] [Accepted: 06/14/2011] [Indexed: 11/16/2022]
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283
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284
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Amplified immunosensing based on ionic liquid-doped chitosan film as a matrix and Au nanoparticle decorated graphene nanosheets as labels. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.04.096] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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285
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Amplified electrochemiluminescence of quantum dots by electrochemically reduced graphene oxide for nanobiosensing of acetylcholine. Biosens Bioelectron 2011; 26:4552-8. [DOI: 10.1016/j.bios.2011.05.023] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 05/08/2011] [Accepted: 05/12/2011] [Indexed: 11/17/2022]
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286
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Li R, Wu D, Li H, Xu C, Wang H, Zhao Y, Cai Y, Wei Q, Du B. Label-free amperometric immunosensor for the detection of human serum chorionic gonadotropin based on nanoporous gold and graphene. Anal Biochem 2011; 414:196-201. [DOI: 10.1016/j.ab.2011.03.019] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 03/09/2011] [Accepted: 03/17/2011] [Indexed: 10/18/2022]
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287
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A Novel Electrochemical Immunosensor Based on DNA/Fe 3O 4 (Core) /ZrO 2(Shell)one Dimension Magnetic Probes for Carcino-Embryonic Antigen. ACTA ACUST UNITED AC 2011. [DOI: 10.4028/www.scientific.net/amm.80-81.200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and sensitive electrochemical enzyme-linked immunosorbent assay (ELISA) system of Hydroquinones (HQ)- peroxide hydantoin (CP) -horseradish-peroxidase (HRP) by using magnetic DNA linked core-shell Fe3O4@ZrO2(ZMPs)nanoparticles as labels and signal amplification was established. In the presence of carcinoembryonic antigen (CEA) analyte, the sandwich-type immunocomplex could be formed between HRP labeled CEA second antibody(CEA Ab2) modified DNA-ZMPs probes (DNA / (ZMPs-HRP-CEA Ab2) n) and nano-gold CEA modified glassy carbon electrode (GCE | CEA Ab1) as an immune electrode.The concentration of CEA was determined based on the current signal, which was generated in the reaction between HQ and CP catalyzed by HRP on the sandwich-type immunocomplex. ZMPs nanoparticles as label material can not only perform the rapid separation and purification of signal antibody on magnetic field, but also immensely enhance the labeled capacity of HRP-anti-CEA which can amplify the catalytic current signal. Furthermore, the electrode modification process was not required. The method provided a linear response range between 0.01 and 200 ng·mL-1with a detection limit of 4 pg·mL-1.Moreover, the proposed electrochemical ELISA method exhibited good precision, high sensitivity and acceptable reproducibility, and could be further developed for clinical detections of CEA and other biomarkers.
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288
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Chunglok W, Khownarumit P, Rijiravanich P, Somasundrum M, Surareungchai W. Electrochemical immunoassay platform for high sensitivity protein detection based on redox-modified carbon nanotube labels. Analyst 2011; 136:2969-74. [PMID: 21647503 DOI: 10.1039/c1an15079k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report a highly sensitive immunoassay protocol based on the use of redox-modified multi-walled carbon nanotubes (MWNTs) as electrochemical labels. The MWNTs were coated with methylene blue (MB) at an optically-determined loading of 3.41 × 10(-3) mol g(-1), and were then attached to secondary antibodies (Ab(2)) by adsorption. As a model analyte mouse IgG was collected by primary antibody (Ab(1))-coated magnetic beads. Following binding of the MB-MWNT-Ab(2) conjugates, IgG could be measured by MB reduction. Using differential pulse voltammetry for quantification, IgG was calibrated with a dynamic range of 0.1 pg mL(-1) to 100 pg mL(-1). Given the different possible Ab(1)-MB-MWNT-Ab(2) orientations on the magnetic beads, it was likely that not all the MB communicated with the electrode. A greater quantity of MB could be accessed by using the Fe(CN)(6)(3-/4-) redox couple as a solution phase mediator. This enabled us to lower the dynamic range down to 5 fg mL(-1) to 100 fg mL(-1).
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Affiliation(s)
- Wilanee Chunglok
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkhuntien Campus, Bangkok, 10150, Thailand
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289
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Sun T, Wang L, Li N, Gan X. Label-free electrochemical aptasensor for thrombin detection based on the nafion@graphene as platform. Bioprocess Biosyst Eng 2011; 34:1081-5. [DOI: 10.1007/s00449-011-0558-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Accepted: 05/21/2011] [Indexed: 12/01/2022]
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290
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Tang J, Tang D, Niessner R, Chen G, Knopp D. Magneto-Controlled Graphene Immunosensing Platform for Simultaneous Multiplexed Electrochemical Immunoassay Using Distinguishable Signal Tags. Anal Chem 2011; 83:5407-14. [DOI: 10.1021/ac200969w] [Citation(s) in RCA: 218] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Juan Tang
- Key Laboratory of Analysis and Detection for Food Safety (Fujian Province & Ministry of Education of China), Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Dianping Tang
- Key Laboratory of Analysis and Detection for Food Safety (Fujian Province & Ministry of Education of China), Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Reinhard Niessner
- Chair for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
| | - Guonan Chen
- Key Laboratory of Analysis and Detection for Food Safety (Fujian Province & Ministry of Education of China), Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Dietmar Knopp
- Chair for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
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291
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Li F, Mei L, Li Y, Zhao K, Chen H, Wu P, Hu Y, Cao S. Facile fabrication of magnetic gold electrode for magnetic beads-based electrochemical immunoassay: Application to the diagnosis of Japanese encephalitis virus. Biosens Bioelectron 2011; 26:4253-6. [DOI: 10.1016/j.bios.2011.04.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2011] [Revised: 04/14/2011] [Accepted: 04/15/2011] [Indexed: 10/18/2022]
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292
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Myung S, Solanki A, Kim C, Park J, Kim KS, Lee KB. Graphene-encapsulated nanoparticle-based biosensor for the selective detection of cancer biomarkers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:2221-5. [PMID: 21469221 PMCID: PMC3181002 DOI: 10.1002/adma.201100014] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Revised: 02/16/2011] [Indexed: 05/21/2023]
Affiliation(s)
- Sung Myung
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Aniruddh Solanki
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Cheoljin Kim
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Jaesung Park
- Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, Pohang, Korea
| | - Kwang S. Kim
- Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, Pohang, Korea
| | - Ki-Bum Lee
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
- Institute for Advanced Materials, Devices and Nanotechnology (IAMDN), Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
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293
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Xiang Y, Zhang H, Jiang B, Chai Y, Yuan R. Quantum Dot Layer-by-Layer Assemblies as Signal Amplification Labels for Ultrasensitive Electronic Detection of Uropathogens. Anal Chem 2011; 83:4302-6. [DOI: 10.1021/ac200564r] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yun Xiang
- Key Laboratory of Ministry of Education on Luminescence and Real-Time Analysis, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China, and
| | - Haixia Zhang
- Key Laboratory of Ministry of Education on Luminescence and Real-Time Analysis, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China, and
| | - Bingying Jiang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400040, PR China
| | - Yaqin Chai
- Key Laboratory of Ministry of Education on Luminescence and Real-Time Analysis, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China, and
| | - Ruo Yuan
- Key Laboratory of Ministry of Education on Luminescence and Real-Time Analysis, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China, and
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294
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Lin M, Liu Y, Liu C, Yang Z, Huang Y. Sensitive immunosensor for benzo[a]pyrene detection based on dual amplification strategy of PAMAM dendrimer and amino-modified methylene blue/SiO2 core–shell nanoparticles. Biosens Bioelectron 2011; 26:3761-7. [DOI: 10.1016/j.bios.2011.02.028] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 01/25/2011] [Accepted: 02/18/2011] [Indexed: 12/16/2022]
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295
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Du D, Chen A, Xie Y, Zhang A, Lin Y. Nanoparticle-based immunosensor with apoferritin templated metallic phosphate label for quantification of phosphorylated acetylcholinesterase. Biosens Bioelectron 2011; 26:3857-63. [DOI: 10.1016/j.bios.2011.02.047] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 02/21/2011] [Accepted: 02/26/2011] [Indexed: 11/16/2022]
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296
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Disposable immunosensor array for ultrasensitive detection of tumor markers using glucose oxidase-functionalized silica nanosphere tags. Biosens Bioelectron 2011; 26:3782-7. [DOI: 10.1016/j.bios.2011.02.032] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2010] [Revised: 02/16/2011] [Accepted: 02/18/2011] [Indexed: 11/23/2022]
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297
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Bi-enzyme functionlized hollow PtCo nanochains as labels for an electrochemical aptasensor. Biosens Bioelectron 2011; 26:4331-6. [PMID: 21592763 DOI: 10.1016/j.bios.2011.04.032] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 04/11/2011] [Accepted: 04/19/2011] [Indexed: 11/21/2022]
Abstract
In this work, a new signal amplification strategy based on hollow PtCo nanochains (HPtCoNCs) functionalized by bi-enzyme-horseradish peroxidase mimicking DNAzyme (HRP-DNAzyme) and glucose oxidase (GOD), as well as ferrocene-labeled secondary thrombin aptamer (Fc-TBA 2), is developed to construct a highly sensitive electrochemical aptasensor. The HRP-DNAzyme contains a special G-quadruplex structure with an intercalated hemin. With the surface area enlarged by HPtCoNCs, the amount of immobilized Fc-TBA 2, hemin and GOD can be enhanced. Under the enzyme catalysis of GOD, d-glucose is rapidly oxidized into gluconic acid accompanying with the generation of H₂O₂, which is further electrocatalyzed by Pt nanoparticles and HPR-DNAzyme to improve the electrochemical signal of Fc. With several amplification factors mentioned above, a wide linear ranged from 0.001 to 30 nM is acquired with a relatively low detection limit of 0.39 pM for thrombin. The present work demonstrates that using HPtCoNCs as labels is a promising way to amplify the analysis signal and improve the sensitivity of aptasensors.
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298
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Xu S, Liu Y, Wang T, Li J. Positive Potential Operation of a Cathodic Electrogenerated Chemiluminescence Immunosensor Based on Luminol and Graphene for Cancer Biomarker Detection. Anal Chem 2011; 83:3817-23. [DOI: 10.1021/ac200237j] [Citation(s) in RCA: 319] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shoujiang Xu
- Key Lab of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
- College of Materials Science and Engineering, and Key Laboratory for Micro−Nano Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, China
| | - Yang Liu
- Key Lab of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Taihong Wang
- College of Materials Science and Engineering, and Key Laboratory for Micro−Nano Optoelectronic Devices of Ministry of Education, Hunan University, Changsha 410082, China
| | - Jinghong Li
- Key Lab of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China
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299
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Akhavan O, Ghaderi E, Esfandiar A. Wrapping bacteria by graphene nanosheets for isolation from environment, reactivation by sonication, and inactivation by near-infrared irradiation. J Phys Chem B 2011; 115:6279-88. [PMID: 21513335 DOI: 10.1021/jp200686k] [Citation(s) in RCA: 370] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Bioactivity of Escherichia coli bacteria (as a simple model for microorganisms) and interaction of them with the environment were controlled by their capturing within aggregated graphene nanosheets. The oxygen-containing functional groups of chemically exfoliated single-layer graphene oxide nanosheets were reduced by melatonin as a biocompatible antioxidant. While each one of the graphene (oxide) suspension and melatonin solution did not separately show any considerable inactivation effects on the bacteria, aggregation of the sheets in the melatonin-bacterial suspension resulted in trapping the bacteria within the aggregated sheets, i.e., a kind of inactivation. The bacteria trapped within the aggregated sheets were biologically disconnected from their environment, because they could not proliferate in a culture medium and consume the glucose of their environment. However, after removing the sheets from the surface of the microorganisms by using sonication, they could again interact with their environment. The reactivated bacteria consumed glucose and could be proliferated; i.e., they were alive within the aggregated graphene sheets (here, at least for 24 h). The trapped alive bacteria could be photothermally inactivated forever by near-infrared irradiation at 808 nm. These results suggest that graphene nanosheets may potentially serve as an encapsulating material for delivery of such microorganisms and as an effective photothermal agent for inactivation of the graphene-wrapped microorganisms.
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Affiliation(s)
- O Akhavan
- Department of Physics, Sharif University of Technology, P. O. Box 11155-9161, Tehran, Iran.
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300
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Guo S, Wen D, Zhai Y, Dong S, Wang E. Ionic liquid–graphene hybrid nanosheets as an enhanced material for electrochemical determination of trinitrotoluene. Biosens Bioelectron 2011; 26:3475-81. [DOI: 10.1016/j.bios.2011.01.028] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 01/18/2011] [Accepted: 01/20/2011] [Indexed: 10/18/2022]
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