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Moreau ALD, Janissen R, Santos CA, Peroni LA, Stach-Machado DR, de Souza AA, de Souza AP, Cotta MA. Highly-sensitive and label-free indium phosphide biosensor for early phytopathogen diagnosis. Biosens Bioelectron 2012; 36:62-8. [PMID: 22538056 DOI: 10.1016/j.bios.2012.03.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 03/23/2012] [Accepted: 03/26/2012] [Indexed: 11/30/2022]
Abstract
The development of highly-sensitive and label-free operating semiconductor-based, biomaterial detecting sensors has important applications in areas such as environmental science, biomedical research and medical diagnostics. In the present study, we developed an Indium Phosphide (InP) semiconductor-based resistive biosensor using the change of its electronic properties upon biomaterial adsorption as sensing element. To detect biomaterial at low concentrations, the procedure of functionalization and covalent biomolecule immobilization was also optimized to guarantee high molecule density and high reproducibility which are prerequisite for reliable results. The characterization, such as biomolecular conjugation efficiency, detection concentration limits, receptor:ligand specificity and concentration detection range was analyzed by using three different biological systems: i) synthetic dsDNA and two phytopathogenic diseases, ii) the severe CB-form of Citrus Tristeza Virus (CTV) and iii) Xylella fastidiosa, both causing great economic loss worldwide. The experimental results show a sensitivity of 1 pM for specific ssDNA detection and about 2 nM for the specific detection of surface proteins of CTV and X. fastidiosa phytopathogens. A brief comparison with other semiconductor based biosensors and other methodological approaches is discussed and confirms the high sensitivity and reproducibility of our InP based biosensor which could be suitable for reliable early infection diagnosis in environmental and life sciences.
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Affiliation(s)
- Alberto L D Moreau
- Instituto de Fisica Gleb Wataghin, Universidade Estadual de Campinas, 13083-859, Campinas, SP, Brazil.
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302
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Yang H, Wang Y, Qi H, Gao Q, Zhang C. Electrogenerated chemiluminescence biosensor incorporating ruthenium complex-labelled Concanavalin A as a probe for the detection of Escherichia coli. Biosens Bioelectron 2012; 35:376-381. [PMID: 22521414 DOI: 10.1016/j.bios.2012.03.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 03/12/2012] [Indexed: 01/13/2023]
Abstract
A novel electrogenerated chemiluminescence (ECL) biosensor for highly sensitive detection of Escherichia coli (E. coli) was first developed by employing Concanavalin A (Con A) as a biological recognition element and bis(2,2'-bipyridine)-4'-methyl-4-carboxybipyridine ruthenium (II) (Ru1) complex as the detector. The ECL biosensor was fabricated by adsorbing carboxyl-functionalised single-wall carbon nanotubes (SWNTs) onto a paraffin-impregnated graphite electrode and further covalently coupling the Ru1-Con A probe onto the surface of the SWNT-modified electrode. Upon the binding of E. coli O157:H7 (as a model target), the biosensor showed a decreased ECL intensity in the presence of tri-n-propylamine (TPrA), which was in logarithmically direct proportion to the concentration of E. coli over a range from 5.0 × 10(2) to 5.0 × 10(5)cells/mL. The detection limit of this sensor was 127 cells/mL. Additionally, the ECL biosensor also showed satisfactory selectivity in discriminating gram-negative E. coli from gram-positive bacteria. The strategy developed in this study may be a promising approach and could be extended to the design of ECL biosensors for highly sensitive and rapid detection of other desired bacteria.
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Affiliation(s)
- Haiying Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China; Department of Chemistry, Yuncheng University, Yuncheng 044300, PR China
| | - Yaqin Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Honglan Qi
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Qiang Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
| | - Chengxiao Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China.
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303
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Dubrovin EV, Fedyukina GN, Kraevsky SV, Ignatyuk TE, Yaminsky IV, Ignatov SG. AFM Specific Identification of Bacterial Cell Fragments on Biofunctional Surfaces. Open Microbiol J 2012; 6:22-8. [PMID: 22408697 PMCID: PMC3293165 DOI: 10.2174/1874285801206010022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Revised: 01/05/2012] [Accepted: 01/09/2012] [Indexed: 11/22/2022] Open
Abstract
Biointerfaces with a highly sensitive surface designed for specific interaction with biomolecules are essential approaches for providing advanced biochemical and biosensor assays. For the first time, we have introduced a simple AFM-based recognition system capable of visualizing specific bacterial nanofragments and identifying the corresponding bacterial type. For this we developed AFM-adjusted procedures for preparing IgG-based surfaces and subsequently exposing them to antigens. The AFM images reveal the specific binding of Escherichia coli cell fragments to the prepared biofunctional surfaces. Moreover, the binding of bacterial cell fragments to the affinity surfaces can be characterized quantitatively, indicating a 30-fold to 80-fold increase in the quantity of bound antigenic material in the case of a specific antigen-antibody pair. Our results demonstrate significant opportunities for developing reliable sensing procedures for detecting pathogenic bacteria, and the cell can still be identified after it is completely destroyed.
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Affiliation(s)
- Evgeniy V Dubrovin
- M.V. Lomonosov Moscow State University, 1/2 Leninskie gory, Moscow, 119991, Russia
| | - Galina N Fedyukina
- State Research Center for Applied Microbiology and Biotechnology, Obolensk, 142279, Russia
| | - Sergey V Kraevsky
- Institute for Theoretical and Experimental Physics, 25 Bolshaya Cheremushkinskaya, Moscow, 117218, Russia
| | - Tatiana E Ignatyuk
- Institute for Theoretical and Experimental Physics, 25 Bolshaya Cheremushkinskaya, Moscow, 117218, Russia
| | - Igor V Yaminsky
- M.V. Lomonosov Moscow State University, 1/2 Leninskie gory, Moscow, 119991, Russia
| | - Sergei G Ignatov
- State Research Center for Applied Microbiology and Biotechnology, Obolensk, 142279, Russia
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304
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Šefčovičová J, Filip J, Mastihuba V, Gemeiner P, Tkac J. Analysis of ethanol in fermentation samples by a robust nanocomposite-based microbial biosensor. Biotechnol Lett 2012; 34:1033-9. [DOI: 10.1007/s10529-012-0875-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 02/06/2012] [Indexed: 10/28/2022]
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305
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Pseudomonas fluorescens HK44: lessons learned from a model whole-cell bioreporter with a broad application history. SENSORS 2012; 12:1544-71. [PMID: 22438725 PMCID: PMC3304127 DOI: 10.3390/s120201544] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Revised: 01/24/2012] [Accepted: 02/03/2012] [Indexed: 11/21/2022]
Abstract
Initially described in 1990, Pseudomonas fluorescens HK44 served as the first whole-cell bioreporter genetically endowed with a bioluminescent (luxCDABE) phenotype directly linked to a catabolic (naphthalene degradative) pathway. HK44 was the first genetically engineered microorganism to be released in the field to monitor bioremediation potential. Subsequent to that release, strain HK44 had been introduced into other solids (soils, sands), liquid (water, wastewater), and volatile environments. In these matrices, it has functioned as one of the best characterized chemically-responsive environmental bioreporters and as a model organism for understanding bacterial colonization and transport, cell immobilization strategies, and the kinetics of cellular bioluminescent emission. This review summarizes the characteristics of P. fluorescens HK44 and the extensive range of its applications with special focus on the monitoring of bioremediation processes and biosensing of environmental pollution.
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306
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Chalenko Y, Shumyantseva V, Ermolaeva S, Archakov A. Electrochemistry of Escherichia coli JM109: Direct electron transfer and antibiotic resistance. Biosens Bioelectron 2012; 32:219-23. [DOI: 10.1016/j.bios.2011.12.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 12/07/2011] [Accepted: 12/08/2011] [Indexed: 11/30/2022]
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307
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Genetic Programming as a tool for identification of analyte-specificity from complex response patterns using a non-specific whole-cell biosensor. Biosens Bioelectron 2012; 33:254-9. [PMID: 22325714 DOI: 10.1016/j.bios.2012.01.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 01/09/2012] [Accepted: 01/13/2012] [Indexed: 11/23/2022]
Abstract
Whole-cell biosensors are mostly non-specific with respect to their detection capabilities for toxicants, and therefore offering an interesting perspective in environmental monitoring. However, to fully employ this feature, a robust classification method needs to be implemented into these sensor systems to allow further identification of detected substances. Substance-specific information can be extracted from signals derived from biosensors harbouring one or multiple biological components. Here, a major task is the identification of substance-specific information among considerable amounts of biosensor data. For this purpose, several approaches make use of statistical methods or machine learning algorithms. Genetic Programming (GP), a heuristic machine learning technique offers several advantages compared to other machine learning approaches and consequently may be a promising tool for biosensor data classification. In the present study, we have evaluated the use of GP for the classification of herbicides and herbicide classes (chemical classes) by analysis of substance-specific patterns derived from a whole-cell multi-species biosensor. We re-analysed data from a previously described array-based biosensor system employing diverse microalgae (Podola and Melkonian, 2005), aiming on the identification of five individual herbicides as well as two herbicide classes. GP analyses were performed using the commercially available GP software 'Discipulus', resulting in classifiers (computer programs) for the binary classification of each individual herbicide or herbicide class. GP-generated classifiers both for individual herbicides and herbicide classes were able to perform a statistically significant identification of herbicides or herbicide classes, respectively. The majority of classifiers were able to perform correct classifications (sensitivity) of about 80-95% of test data sets, whereas the false positive rate (specificity) was lower than 20% for most classifiers. Results suggest that a higher number of data sets may lead to a better classification performance. In the present paper, GP-based classification was combined with a biosensor for the first time. Our results demonstrate GP was able to identify substance-specific information within complex biosensor response patterns and furthermore use this information for successful toxicant classification in unknown samples. This suggests further research to assess perspectives and limitations of this approach in the field of biosensors.
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308
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Park MK, Oh JH. Rapid detection of E. coli O157:H7 on turnip greens using a modified gold biosensor combined with light microscopic imaging system. J Food Sci 2012; 77:M127-34. [PMID: 22251215 DOI: 10.1111/j.1750-3841.2011.02537.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This research aims to demonstrate the feasibility of a modified gold biosensor to detect E. coli O157:H7 in leafy turnip greens. The gold biosensor was modified with dithiobis-succinimidyl propionate (DSP) and/or protein A or G. The gold biosensor modified with DSP (Gold-DSP) was combined with a light microscopic imaging system (LMIS). The optimal concentration and specificity of anti-E. coli O15 polyclonal antibodies (pAbs) on the biosensor were determined. The reliability of Gold-DSP biosensor was investigated by determining the sensitivity, specificity, and limit of detection (LOD) of the Gold-DSP combined with LMIS. The Gold-DSP combined with LMIS was applied to turnip greens for E. coli O157:H7 detection. The modification of Gold biosensor with DSP significantly increased the detected number of E. coli O157:H7. The specificity of pAbs was sufficient to react with target E. coli O157:H7 among the tested bacterial culture. The optimum concentration of pAbs was determined as 200 μg/mL. The sensitivity, specificity, and LOD of Gold-DSP combined with LMIS were determined as 100%, 90%, and 10(3) CFU/25 mm(2) , respectively. When applied to turnip greens, the Gold-DSP combined with LMIS could detect 2641 ± 394 and 15383 ± 3853 cell/mm(2) with the initial concentrations of 10(1) and 10(2) CFU/25 g turnip greens, respectively, after 10 h-enrichment. Overall, this research suggested that the Gold-DSP combined with LMIS could be used to detect E. coli O157:H7 on turnip greens qualitatively and quantitatively.
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Affiliation(s)
- Mi-Kyung Park
- Materials Research and Education Center, Auburn Univ, 275 Wilmore Labs, Auburn, AL 36830, USA
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309
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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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310
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Moon HS, Lee JH, Kwon K, Jung HI. Review of Recent Progress in Micro-Systems for the Detection and Analysis of Airborne Microorganisms. ANAL LETT 2012. [DOI: 10.1080/00032719.2011.633189] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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311
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Microfluidic electrochemical assay for rapid detection and quantification of Escherichia coli. Biosens Bioelectron 2012; 31:523-8. [DOI: 10.1016/j.bios.2011.11.032] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 11/08/2011] [Accepted: 11/21/2011] [Indexed: 12/27/2022]
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312
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Sassolas A, Prieto-Simón B, Marty JL. Biosensors for Pesticide Detection: New Trends. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ajac.2012.33030] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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313
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Ultrasensitive and selective non-enzymatic glucose detection using copper nanowires. Biosens Bioelectron 2012; 31:426-32. [DOI: 10.1016/j.bios.2011.11.006] [Citation(s) in RCA: 246] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 11/03/2011] [Accepted: 11/04/2011] [Indexed: 11/19/2022]
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314
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Babauta J, Renslow R, Lewandowski Z, Beyenal H. Electrochemically active biofilms: facts and fiction. A review. BIOFOULING 2012; 28:789-812. [PMID: 22856464 PMCID: PMC4242416 DOI: 10.1080/08927014.2012.710324] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
This review examines the electrochemical techniques used to study extracellular electron transfer in the electrochemically active biofilms that are used in microbial fuel cells and other bioelectrochemical systems. Electrochemically active biofilms are defined as biofilms that exchange electrons with conductive surfaces: electrodes. Following the electrochemical conventions, and recognizing that electrodes can be considered reactants in these bioelectrochemical processes, biofilms that deliver electrons to the biofilm electrode are called anodic, ie electrode-reducing, biofilms, while biofilms that accept electrons from the biofilm electrode are called cathodic, ie electrode-oxidizing, biofilms. How to grow these electrochemically active biofilms in bioelectrochemical systems is discussed and also the critical choices made in the experimental setup that affect the experimental results. The reactor configurations used in bioelectrochemical systems research are also described and the authors demonstrate how to use selected voltammetric techniques to study extracellular electron transfer in bioelectrochemical systems. Finally, some critical concerns with the proposed electron transfer mechanisms in bioelectrochemical systems are addressed together with the prospects of bioelectrochemical systems as energy-converting and energy-harvesting devices.
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Affiliation(s)
- Jerome Babauta
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA
| | - Ryan Renslow
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA
| | | | - Haluk Beyenal
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA
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315
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Wagner LT, Yang J, Ghobadian S, Montazami R, Hashemi N. A Microfluidic Reactor for Energy Applications. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ojab.2012.13003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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316
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Chobtang J, de Boer IJM, Hoogenboom RLAP, Haasnoot W, Kijlstra A, Meerburg BG. The need and potential of biosensors to detect dioxins and dioxin-like polychlorinated biphenyls along the milk, eggs and meat food chain. SENSORS (BASEL, SWITZERLAND) 2011; 11:11692-716. [PMID: 22247688 PMCID: PMC3252005 DOI: 10.3390/s111211692] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 12/02/2011] [Accepted: 12/14/2011] [Indexed: 11/17/2022]
Abstract
Dioxins and dioxin-like polychlorinated biphenyls (DL-PCBs) are hazardous toxic, ubiquitous and persistent chemical compounds, which can enter the food chain and accumulate up to higher trophic levels. Their determination requires sophisticated methods, expensive facilities and instruments, well-trained personnel and expensive chemical reagents. Ideally, real-time monitoring using rapid detection methods should be applied to detect possible contamination along the food chain in order to prevent human exposure. Sensor technology may be promising in this respect. This review gives the state of the art for detecting possible contamination with dioxins and DL-PCBs along the food chain of animal-source foods. The main detection methods applied (i.e., high resolution gas-chromatography combined with high resolution mass-spectrometry (HRGC/HRMS) and the chemical activated luciferase gene expression method (CALUX bioassay)), each have their limitations. Biosensors for detecting dioxins and related compounds, although still under development, show potential to overcome these limitations. Immunosensors and biomimetic-based biosensors potentially offer increased selectivity and sensitivity for dioxin and DL-PCB detection, while whole cell-based biosensors present interpretable biological results. The main shortcoming of current biosensors, however, is their detection level: this may be insufficient as limits for dioxins and DL-PCBs for food and feedstuffs are in pg per gram level. In addition, these contaminants are normally present in fat, a difficult matrix for biosensor detection. Therefore, simple and efficient extraction and clean-up procedures are required which may enable biosensors to detect dioxins and DL-PCBs contamination along the food chain.
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Affiliation(s)
- Jeerasak Chobtang
- Animal Production Systems Group, Wageningen University, P.O. Box 338, 6700 AH Wageningen, The Netherlands; E-Mails: (J.C.); (I.J.M.B.)
- Livestock Research, Wageningen University and Research Centre, P.O. Box 65, 8200 AB Lelystad, The Netherlands; E-Mail: (A.K.)
| | - Imke J. M. de Boer
- Animal Production Systems Group, Wageningen University, P.O. Box 338, 6700 AH Wageningen, The Netherlands; E-Mails: (J.C.); (I.J.M.B.)
| | - Ron L. A. P. Hoogenboom
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, The Netherlands; E-Mails: (R.L.A.P.H.); (W.H.)
| | - Willem Haasnoot
- RIKILT Institute of Food Safety, Wageningen University and Research Centre, P.O. Box 230, 6700 AE Wageningen, The Netherlands; E-Mails: (R.L.A.P.H.); (W.H.)
| | - Aize Kijlstra
- Livestock Research, Wageningen University and Research Centre, P.O. Box 65, 8200 AB Lelystad, The Netherlands; E-Mail: (A.K.)
- Eye Research Institute Maastricht, Department of Ophthalmology, University Hospital Maastricht, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands
| | - Bastiaan G. Meerburg
- Livestock Research, Wageningen University and Research Centre, P.O. Box 65, 8200 AB Lelystad, The Netherlands; E-Mail: (A.K.)
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317
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Gredell JA, Frei CS, Cirino PC. Protein and RNA engineering to customize microbial molecular reporting. Biotechnol J 2011; 7:477-99. [PMID: 22031507 DOI: 10.1002/biot.201100266] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 07/20/2011] [Accepted: 08/23/2011] [Indexed: 12/19/2022]
Abstract
Nature takes advantage of the malleability of protein and RNA sequence and structure to employ these macromolecules as molecular reporters whose conformation and functional roles depend on the presence of a specific ligand (an "effector" molecule). By following nature's example, ligand-responsive proteins and RNA molecules are now routinely engineered and incorporated into customized molecular reporting systems (biosensors). Microbial small-molecule biosensors and endogenous molecular reporters based on these sensing components find a variety of applications that include high-throughput screening of biosynthesis libraries, environmental monitoring, and novel gene regulation in synthetic biology. Here, we review recent advances in engineering small-molecule recognition by proteins and RNA and in coupling in vivo ligand binding to reporter-gene expression or to allosteric activation of a protein conferring a detectable phenotype. Emphasis is placed on microbial screening systems that serve as molecular reporters and facilitate engineering the ligand-binding component to recognize new molecules.
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Affiliation(s)
- Joseph A Gredell
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA
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318
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Arora P, Sindhu A, Dilbaghi N, Chaudhury A. Biosensors as innovative tools for the detection of food borne pathogens. Biosens Bioelectron 2011; 28:1-12. [DOI: 10.1016/j.bios.2011.06.002] [Citation(s) in RCA: 234] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 06/04/2011] [Accepted: 06/07/2011] [Indexed: 11/25/2022]
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319
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Staying alive: new perspectives on cell immobilization for biosensing purposes. Anal Bioanal Chem 2011; 402:1785-97. [PMID: 21922308 DOI: 10.1007/s00216-011-5364-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Revised: 08/10/2011] [Accepted: 08/24/2011] [Indexed: 01/09/2023]
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320
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Šefčovičová J, Filip J, Gemeiner P, Vikartovská A, Pätoprstý V, Tkac J. High performance microbial 3-D bionanocomposite as a bioanode for a mediated biosensor device. Electrochem commun 2011. [DOI: 10.1016/j.elecom.2011.06.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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321
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D'Orazio P. Biosensors in clinical chemistry - 2011 update. Clin Chim Acta 2011; 412:1749-61. [PMID: 21729694 PMCID: PMC7094392 DOI: 10.1016/j.cca.2011.06.025] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 06/20/2011] [Accepted: 06/21/2011] [Indexed: 12/19/2022]
Abstract
Research activity and applications of biosensors for measurement of analytes of clinical interest over the last eight years are reviewed. Nanotechnology has been applied to improve performance of biosensors using electrochemical, optical, mechanical and physical modes of transduction, and to allow arrays of biosensors to be constructed for parallel sensing. Biosensors have been proposed for measurement of cancer biomarkers, cardiac biomarkers as well as biomarkers for autoimmune disease, infectious disease and for DNA analysis. Novel applications of biosensors include measurements in alternate sample types, such as saliva. Biosensors based on immobilized whole cells have found new applications, for example to detect the presence of cancer and to monitor the response of cancer cells to chemotherapeutic agents. The number of research reports describing new biosensors for analytes of clinical interest continues to increase; however, movement of biosensors from the research laboratory to the clinical laboratory has been slow. The greatest impact of biosensors will be felt at point-of-care testing locations without laboratory support. Integration of biosensors into reliable, easy-to-use and rugged instrumentation will be required to assure success of biosensor-based systems at the point-of-care.
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Affiliation(s)
- Paul D'Orazio
- Instrumentation Laboratory, Bedford, MA 01730, United States.
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322
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323
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Kumar J, D'Souza SF. Immobilization of microbial cells on inner epidermis of onion bulb scale for biosensor application. Biosens Bioelectron 2011; 26:4399-404. [PMID: 21605968 DOI: 10.1016/j.bios.2011.04.049] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2011] [Revised: 04/22/2011] [Accepted: 04/25/2011] [Indexed: 12/01/2022]
Abstract
Inner epidermis of onion bulb scales was used as a natural support for immobilization of microbial cells for biosensor application. A bacterium Sphingomonas sp. that hydrolyzes methyl parathion into a chromophoric product, p-nitrophenol (PNP), has been isolated and identified in our laboratory. PNP can be detected by electrochemical and colorimetric methods. Whole cells of Sphingomonas sp. were immobilized on inner epidermis of onion bulb scale by adsorption followed by cross-linking methods. Cells immobilized onion membrane was directly placed in the wells of microplate and associated with the optical transducer. Methyl parathion is an organophosphorus pesticide that has been widely used in the field of agriculture for insect pest control. This pesticide causes environmental pollution and ecological problem. A detection range 4-80 μM of methyl parathion was estimated from the linear range of calibration plot of enzymatic assay. A single membrane was reused for 52 reactions and was found to be stable for 32 days with 90% of its initial hydrolytic activity. The applicability of the cells immobilized onion membrane was also demonstrated with spiked samples.
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Affiliation(s)
- Jitendra Kumar
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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324
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Affiliation(s)
- Ana Ballesteros-Gómez
- Department of Analytical Chemistry, Edificio Anexo Marie Curie, Campus de Rabanales, 14071 Córdoba, Spain
| | - Soledad Rubio
- Department of Analytical Chemistry, Edificio Anexo Marie Curie, Campus de Rabanales, 14071 Córdoba, Spain
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Demirkol DO, Timur S. Chitosan matrices modified with carbon nanotubes for use in mediated microbial biosensing. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0596-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gruhl FJ, Rapp BE, Länge K. Biosensors for diagnostic applications. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2011; 133:115-48. [PMID: 22223139 DOI: 10.1007/10_2011_130] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Biosensors combine a transducer with a biorecognition element and thus are able to transform a biochemical event on the transducer surface directly into a measurable signal. By this they have the potential to provide rapid, real-time, and accurate results in a comparatively easy way, which makes them promising analytical devices. Since the first biosensor was introduced in 1962 as an "enzyme electrode" for monitoring glucose in blood, medical applications have been the main driving force for further biosensor development. In this chapter we outline potential biosensor setups, focusing on transduction principles, biorecognition layers, and biosensor test formats, with regard to potential applications. A summary of relevant aspects concerning biosensor integration in efficient analytical setups is included. We describe the latest applications of biosensors in diagnostic applications focusing on detection of molecular biomarkers in real samples. An overview of the current state and future trends of biosensors in this field is given.
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Affiliation(s)
- Friederike J Gruhl
- Karlsruhe Institute of Technology Institute for Microstructure Technology, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
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