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Valderas-Gutiérrez J, Davtyan R, Sivakumar S, Anttu N, Li Y, Flatt P, Shin JY, Prinz CN, Höök F, Fioretos T, Magnusson MH, Linke H. Enhanced Optical Biosensing by Aerotaxy Ga(As)P Nanowire Platforms Suitable for Scalable Production. ACS APPLIED NANO MATERIALS 2022; 5:9063-9071. [PMID: 35909504 PMCID: PMC9315950 DOI: 10.1021/acsanm.2c01372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sensitive detection of low-abundance biomolecules is central for diagnostic applications. Semiconductor nanowires can be designed to enhance the fluorescence signal from surface-bound molecules, prospectively improving the limit of optical detection. However, to achieve the desired control of physical dimensions and material properties, one currently uses relatively expensive substrates and slow epitaxy techniques. An alternative approach is aerotaxy, a high-throughput and substrate-free production technique for high-quality semiconductor nanowires. Here, we compare the optical sensing performance of custom-grown aerotaxy-produced Ga(As)P nanowires vertically aligned on a polymer substrate to GaP nanowires batch-produced by epitaxy on GaP substrates. We find that signal enhancement by individual aerotaxy nanowires is comparable to that from epitaxy nanowires and present evidence of single-molecule detection. Platforms based on both types of nanowires show substantially higher normalized-to-blank signal intensity than planar glass surfaces, with the epitaxy platforms performing somewhat better, owing to a higher density of nanowires. With further optimization, aerotaxy nanowires thus offer a pathway to scalable, low-cost production of highly sensitive nanowire-based platforms for optical biosensing applications.
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Affiliation(s)
- Julia Valderas-Gutiérrez
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Rubina Davtyan
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Sudhakar Sivakumar
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Nicklas Anttu
- Physics,
Faculty of Science and Engineering, Åbo
Akademi University, Henrikinkatu
2, FI-20500 Turku, Finland
| | - Yuyu Li
- AlignedBio
AB, Medicon Village,
Scheeletorget 1, SE-22363, Lund 22100, Sweden
| | - Patrick Flatt
- AlignedBio
AB, Medicon Village,
Scheeletorget 1, SE-22363, Lund 22100, Sweden
| | - Jae Yen Shin
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Christelle N. Prinz
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Fredrik Höök
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Department
of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Thoas Fioretos
- Division
of Clinical Genetics, Lund University, SE-22185 Lund, Sweden
| | - Martin H. Magnusson
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
| | - Heiner Linke
- NanoLund, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
- Division
of Solid State Physics, Lund University, P.O. Box 118, SE-22100 Lund, Sweden
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2
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Davies S, Hu Y, Jiang N, Montelongo Y, Richardson A, Blyth J, Yetisen AK. Reversible photonic hydrogel sensors via holographic interference lithography. Biosens Bioelectron 2022; 207:114206. [PMID: 35339821 DOI: 10.1016/j.bios.2022.114206] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 03/08/2022] [Accepted: 03/19/2022] [Indexed: 02/02/2023]
Abstract
Continuous monitoring of physiological conditions and biomarkers via optical holographic sensors is an area of growing interest to facilitate the expansion of personalised medicine. Here, a facile laser-induced dual polymerization method is developed to fabricate holographic hydrogel sensors for the continuous and reversible colorimetric determination of pH variations over a physiological range in serum (pH 7-9). Readout parameters simulated through a Finite-difference time-domain Yee's algorithm retrieve the spectral response through expansion. Laser lithography of holographic hydrogel sensor fabrication is achieved via a single 355 nm laser pulse to initiate polymerization of ultrafine hydrogel fringes. Eliminating the requirement for complex processing of toxic components and streamlining the synthetic procedure provides a simpler route to mass production. Optimised pH-responsive hydrogels contain amine bearing functional co-monomers demonstrating reversible Bragg wavelength shifts of 172 nm across the entire visible wavelength range with pH variation from 7.0 to 9.0 upon illumination with broadband light. Photolithographic recording of information shows the ability to convey detailed information to users for qualitative identification of pH. Holographic sensor reversibility over 20 cycles showed minimal variation in replay wavelength supporting reliable and consistent readout, with optimised sensors showing rapid response times of <5 min. The developed sensors demonstrate the application to continuous monitoring in biological fluids, withstanding interference from electrolytes, saccharides, and proteins colorimetrically identifying bovine serum pH over a physiological range. The holographic sensors benefit point-of-care pH analysis of biological analytes which could be applied to the identification of blood gas disorders and wound regeneration monitoring through colorimetric readouts.
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Affiliation(s)
- Samuel Davies
- Department of Chemical Engineering, Imperial College London, London, SW7 2BU, UK
| | - Yubing Hu
- Department of Chemical Engineering, Imperial College London, London, SW7 2BU, UK.
| | - Nan Jiang
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610041, China.
| | - Yunuen Montelongo
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
| | - Andreas Richardson
- Department of Chemical Engineering, Imperial College London, London, SW7 2BU, UK
| | - Jeff Blyth
- Department of Chemical Engineering, Imperial College London, London, SW7 2BU, UK
| | - Ali K Yetisen
- Department of Chemical Engineering, Imperial College London, London, SW7 2BU, UK
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Xu WL, Yang JF, Ran MQ, Zeng X, Redshaw C, Tao Z. A flexible tripod fluorescent probe for multiple cations detection and its application in living cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118614. [PMID: 32604048 DOI: 10.1016/j.saa.2020.118614] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/04/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
To the flexible tripod platform tren (tris(2-aminoethyl)amine), a Rhodamine and two naphthalene fluorophores were introduced. The resulting fluorescence probe named TRN was fully characterized and employed in cell imaging. Probe TRN exhibited high selectivity and excellent sensitivity for the simultaneous fluorescence detection of Zn2+/Hg2+/Al3+/Cu2+. The significant changes in the fluorescence color make naked-eye detection possible. Furthermore, fluorescence imaging experiments of Zn2+/Hg2+/Al3+/Cu2+ in living PC3 cells demonstrated its value for practical applications in biological systems.
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Affiliation(s)
- Wan-Li Xu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Jun-Feng Yang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Mao-Qian Ran
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Xi Zeng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China.
| | - Carl Redshaw
- Department of Chemistry and Biochemistry, University of Hull, Hull HU6 7RX, UK
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
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Li X, Li Y, Qiu Q, Wen Q, Zhang Q, Yang W, Yuwen L, Weng L, Wang L. Efficient biofunctionalization of MoS2 nanosheets with peptides as intracellular fluorescent biosensor for sensitive detection of caspase-3 activity. J Colloid Interface Sci 2019; 543:96-105. [DOI: 10.1016/j.jcis.2019.02.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/18/2019] [Accepted: 02/04/2019] [Indexed: 01/01/2023]
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6
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Yoon SJ, Lee J, Han S, Kim CK, Ahn CW, Kim MK, Lee YH. Non-fluorescent nanoscopic monitoring of a single trapped nanoparticle via nonlinear point sources. Nat Commun 2018; 9:2218. [PMID: 29880791 PMCID: PMC5992221 DOI: 10.1038/s41467-018-04689-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 05/16/2018] [Indexed: 11/08/2022] Open
Abstract
Detection of single nanoparticles or molecules has often relied on fluorescent schemes. However, fluorescence detection approaches limit the range of investigable nanoparticles or molecules. Here, we propose and demonstrate a non-fluorescent nanoscopic trapping and monitoring platform that can trap a single sub-5-nm particle and monitor it with a pair of floating nonlinear point sources. The resonant photon funnelling into an extremely small volume of ~5 × 5 × 7 nm3 through the three-dimensionally tapered 5-nm-gap plasmonic nanoantenna enables the trapping of a 4-nm CdSe/ZnS quantum dot with low intensity of a 1560-nm continuous-wave laser, and the pumping of 1560-nm femtosecond laser pulses creates strong background-free second-harmonic point illumination sources at the two vertices of the nanoantenna. Under the stable trapping conditions, intermittent but intense nonlinear optical spikes are observed on top of the second-harmonic signal plateau, which is identified as the 3.0-Hz Kramers hopping of the quantum dot trapped in the 5-nm gap.
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Affiliation(s)
- Seung Ju Yoon
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
| | - Jungmin Lee
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
| | - Sangyoon Han
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea
| | - Chang-Kyu Kim
- Department of Nano-Optical Engineering, Korea Polytechnic University, Siheung, 15073, South Korea
| | - Chi Won Ahn
- KAIST, National NanoFab Center (NNFC), Daejeon, 341401, South Korea
| | - Myung-Ki Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, South Korea.
| | - Yong-Hee Lee
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea.
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7
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Luby BM, Charron DM, MacLaughlin CM, Zheng G. Activatable fluorescence: From small molecule to nanoparticle. Adv Drug Deliv Rev 2017; 113:97-121. [PMID: 27593264 DOI: 10.1016/j.addr.2016.08.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/15/2016] [Accepted: 08/27/2016] [Indexed: 12/23/2022]
Abstract
Molecular imaging has emerged as an indispensable technology in the development and application of drug delivery systems. Targeted imaging agents report the presence of biomolecules, including therapeutic targets and disease biomarkers, while the biological behaviour of labelled delivery systems can be non-invasively assessed in real time. As an imaging modality, fluorescence offers additional signal specificity and dynamic information due to the inherent responsivity of fluorescence agents to interactions with other optical species and with their environment. Harnessing this responsivity is the basis of activatable fluorescence imaging, where interactions between an engineered fluorescence agent and its biological target induce a fluorogenic response. Small molecule activatable agents are frequently derivatives of common fluorophores designed to chemically react with their target. Macromolecular scale agents are useful for imaging proteins and nucleic acids, although their biological delivery can be difficult. Nanoscale activatable agents combine the responsivity of fluorophores with the unique optical and physical properties of nanomaterials. The molecular imaging application and overall complexity of biological target dictate the most advantageous fluorescence agent size scale and activation strategy.
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Affiliation(s)
- Benjamin M Luby
- Princess Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, ON, Canada
| | - Danielle M Charron
- Princess Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, ON, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Christina M MacLaughlin
- Princess Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, ON, Canada
| | - Gang Zheng
- Princess Margaret Cancer Centre and Techna Institute, University Health Network, Toronto, ON, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada.
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8
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Fluorescence-based bioassays for the detection and evaluation of food materials. SENSORS 2015; 15:25831-67. [PMID: 26473869 PMCID: PMC4634490 DOI: 10.3390/s151025831] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/28/2015] [Accepted: 09/30/2015] [Indexed: 12/12/2022]
Abstract
We summarize here the recent progress in fluorescence-based bioassays for the detection and evaluation of food materials by focusing on fluorescent dyes used in bioassays and applications of these assays for food safety, quality and efficacy. Fluorescent dyes have been used in various bioassays, such as biosensing, cell assay, energy transfer-based assay, probing, protein/immunological assay and microarray/biochip assay. Among the arrays used in microarray/biochip assay, fluorescence-based microarrays/biochips, such as antibody/protein microarrays, bead/suspension arrays, capillary/sensor arrays, DNA microarrays/polymerase chain reaction (PCR)-based arrays, glycan/lectin arrays, immunoassay/enzyme-linked immunosorbent assay (ELISA)-based arrays, microfluidic chips and tissue arrays, have been developed and used for the assessment of allergy/poisoning/toxicity, contamination and efficacy/mechanism, and quality control/safety. DNA microarray assays have been used widely for food safety and quality as well as searches for active components. DNA microarray-based gene expression profiling may be useful for such purposes due to its advantages in the evaluation of pathway-based intracellular signaling in response to food materials.
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9
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Whitcombe MJ, Kirsch N, Nicholls IA. Molecular imprinting science and technology: a survey of the literature for the years 2004-2011. J Mol Recognit 2014; 27:297-401. [PMID: 24700625 DOI: 10.1002/jmr.2347] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/28/2013] [Accepted: 12/01/2013] [Indexed: 12/11/2022]
Abstract
Herein, we present a survey of the literature covering the development of molecular imprinting science and technology over the years 2004-2011. In total, 3779 references to the original papers, reviews, edited volumes and monographs from this period are included, along with recently identified uncited materials from prior to 2004, which were omitted in the first instalment of this series covering the years 1930-2003. In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by sections describing fundamental aspects of molecular imprinting including the development of novel polymer formats. Thereafter, literature describing efforts to apply these polymeric materials to a range of application areas is presented. Current trends and areas of rapid development are discussed.
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10
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Silva RR, Avelino KYPS, Ribeiro KL, Franco OL, Oliveira MDL, Andrade CAS. Optical and dielectric sensors based on antimicrobial peptides for microorganism diagnosis. Front Microbiol 2014; 5:443. [PMID: 25191319 PMCID: PMC4138613 DOI: 10.3389/fmicb.2014.00443] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 08/04/2014] [Indexed: 12/24/2022] Open
Abstract
Antimicrobial peptides (AMPs) are natural compounds isolated from a wide variety of organisms that include microorganisms, insects, amphibians, plants, and humans. These biomolecules are considered as part of the innate immune system and are known as natural antibiotics, presenting a broad spectrum of activities against bacteria, fungi, and/or viruses. Technological innovations have enabled AMPs to be utilized for the development of novel biodetection devices. Advances in nanotechnology, such as the synthesis of nanocomposites, nanoparticles, and nanotubes have permitted the development of nanostructured platforms with biocompatibility and greater surface areas for the immobilization of biocomponents, arising as additional tools for obtaining more efficient biosensors. Diverse AMPs have been used as biological recognition elements for obtaining biosensors with more specificity and lower detection limits, whose analytical response can be evaluated through electrochemical impedance and fluorescence spectroscopies. AMP-based biosensors have shown potential for applications such as supplementary tools for conventional diagnosis methods of microorganisms. In this review, conventional methods for microorganism diagnosis as well new strategies using AMPs for the development of impedimetric and fluorescent biosensors are highlighted. AMP-based biosensors show promise as methods for diagnosing infections and bacterial contaminations as well as applications in quality control for clinical analyses and microbiological laboratories.
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Affiliation(s)
- Rafael R Silva
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco Recife, Brasil
| | - Karen Y P S Avelino
- Departamento de Bioquímica, Universidade Federal de Pernambuco Recife, Brasil
| | - Kalline L Ribeiro
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco Recife, Brasil
| | - Octavio L Franco
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília Brasília-DF, Brasil
| | - Maria D L Oliveira
- Departamento de Bioquímica, Universidade Federal de Pernambuco Recife, Brasil
| | - Cesar A S Andrade
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco Recife, Brasil ; Departamento de Bioquímica, Universidade Federal de Pernambuco Recife, Brasil
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11
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Strategy for making a superior Quenchbody to proteins: effect of the fluorophore position. SENSORS 2014; 14:13285-97. [PMID: 25057138 PMCID: PMC4168482 DOI: 10.3390/s140713285] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/03/2014] [Accepted: 07/16/2014] [Indexed: 11/16/2022]
Abstract
Antibody-based sensors have made outstanding contributions to the fields of molecular biology and biotechnology. Our group recently developed a novel powerful fluorescent immunosensor strategy named Quenchbody (Q-body), which has been applied to the detection of a range of antigens in a rapid, simple, and sensitive manner. However, there were some Q-bodies whose fluorescence response was limited, especially for detecting protein antigens. With the aim of improving this issue, here we made twelve types of Q-bodies incorporated with different number and position of TAMRA fluorophore in the single chain Fv of HyHEL-10, an anti-hen egg lysozyme antibody, as a model. By measuring the fluorescence intensity and its antigen dependency, it was revealed that VL-VH type Q-bodies labeled at a non-CDR loop region of the VL shows the highest fluorescence response. This position locates close to the quenching Trp35 in VL, while it is far from Trp residues in the bound antigen. This result clearly suggests the importance of dye position to maximize the fluorescence quenching and antigen-dependent de-quenching. The discovery may open a way to make many other Q-bodies with superior response.
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12
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Chandrasekaran S, Yousuf S, Enoch IV. C-hexylpyrogallol[4]arene and β-cyclodextrin as directors of the mode of binding of Coumarin 153 with DNA. Supramol Chem 2014. [DOI: 10.1080/10610278.2013.863313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Sameena Yousuf
- Department of Chemistry, Karunya University, Coimbatore 641114, Tamil NaduIndia
| | - Israel V.M.V. Enoch
- Department of Chemistry, Karunya University, Coimbatore 641114, Tamil NaduIndia
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13
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Demchenko AP, Dekaliuk MO. Novel fluorescent carbonic nanomaterials for sensing and imaging. Methods Appl Fluoresc 2013; 1:042001. [DOI: 10.1088/2050-6120/1/4/042001] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Demchenko AP, Tang KC, Chou PT. Excited-state proton coupled charge transfer modulated by molecular structure and media polarization. Chem Soc Rev 2013; 42:1379-408. [PMID: 23169387 DOI: 10.1039/c2cs35195a] [Citation(s) in RCA: 452] [Impact Index Per Article: 41.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Charge and proton transfer reactions in the excited states of organic dyes can be coupled in many different ways. Despite the complementarity of charges, they can occur on different time scales and in different directions of the molecular framework. In certain cases, excited-state equilibrium can be established between the charge-transfer and proton-transfer species. The interplay of these reactions can be modulated and even reversed by variations in dye molecular structures and changes of the surrounding media. With knowledge of the mechanisms of these processes, desired rates and directions can be achieved, and thus the multiple emission spectral features can be harnessed. These features have found versatile applications in a number of cutting-edge technological areas, particularly in fluorescence sensing and imaging.
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Affiliation(s)
- Alexander P Demchenko
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha street, Kiev 01030, Ukraine.
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15
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Protti S, Mezzetti A. Any colour you like. Excited state and ground state proton transfer in flavonols and applications. PHOTOCHEMISTRY 2012. [DOI: 10.1039/9781849734882-00295] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The photoinduced and ground state proton transfer processes occurring in flavonols are responsible for their multi-wavelength emission. This peculiar behavior has touched on a wide range of research areas, ranging from biology to chemistry of materials leading, among others, to the development of fluorescent probes for physical and biophysical parameters, laser dyes, and wavelentgh shifting devices. This account aims to be a brief introduction to the multi-faceted applications of flavonols.
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Affiliation(s)
- Stefano Protti
- PhotoGreen Lab Department of Chemistry University of Pavia, V.Le Taramelli 12, 27100 Pavia Italy
| | - Alberto Mezzetti
- Laboratoire de Photocatalyse et BiohydrogèneSB2SM, CNRS URA 2096, CEA-Saclay, DSV/iBiTecS, 91191 Gif-sur-Yvette cedexFrance
- Laboratoire de Spectrochimie Infrarouge et Raman UMR CNRS 8516Université de Sciences et Technologies de Lille, Bat. C5, Cité Scientifique, 59655, Villeneuve d’AscqFrance
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16
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Barnett MJ, Pearce DA, Cullen DC. Advances in the in-field detection of microorganisms in ice. ADVANCES IN APPLIED MICROBIOLOGY 2012; 81:133-67. [PMID: 22958529 DOI: 10.1016/b978-0-12-394382-8.00004-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The historic view of ice-bound ecosystems has been one of a predominantly lifeless environment, where microorganisms certainly exist but are assumed to be either completely inactive or in a state of long-term dormancy. However, this standpoint has been progressively overturned in the past 20years as studies have started to reveal the importance of microbial life in the functioning of these environments. Our present knowledge of the distribution, taxonomy, and metabolic activity of such microbial life has been derived primarily from laboratory-based analyses of collected field samples. To date, only a restricted range of life detection and characterization techniques have been applied in the field. Specific examples include direct observation and DNA-based techniques (microscopy, specific stains, and community profiling based on PCR amplification), the detection of biomarkers (such as adenosine triphosphate), and measurements of metabolism [through the uptake and incorporation of radiolabeled isotopes or chemical alteration of fluorescent substrates (umbelliferones are also useful here)]. On-going improvements in technology mean that smaller and more robust life detection and characterization systems are continually being designed, manufactured, and adapted for in-field use. Adapting technology designed for other applications is the main source of new methodology, and the range of techniques is currently increasing rapidly. Here we review the current use of technology and techniques to detect and characterize microbial life within icy environments and specifically its deployment to in-field situations. We discuss the necessary considerations, limitations, and adaptations, review emerging technologies, and highlight the future potential. Successful application of these new techniques to in-field studies will certainly generate new insights into the way ice bound ecosystems function.
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Affiliation(s)
- Megan J Barnett
- Cranfield Health, Vincent Building, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK
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17
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Nayak MK. Synthesis, characterization and optical properties of aryl and diaryl substituted phenanthroimidazoles. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.05.018] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Demchenko AP. Beyond annexin V: fluorescence response of cellular membranes to apoptosis. Cytotechnology 2012; 65:157-72. [PMID: 22797774 DOI: 10.1007/s10616-012-9481-y] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 06/24/2012] [Indexed: 02/07/2023] Open
Abstract
Dramatic changes in the structure of cell membranes on apoptosis allow easy, sensitive and non-destructive analysis of this process with the application of fluorescence methods. The strong plasma membrane asymmetry is present in living cells, and its loss on apoptosis is commonly detected with the probes interacting strongly and specifically with phosphatidylserine (PS). This phospholipid becomes exposed to the cell surface, and the application of annexin V labeled with fluorescent dye is presently the most popular tool for its detection. Several methods have been suggested recently that offer important advantages over annexin V assay with the ability to study apoptosis by spectroscopy of cell suspensions, flow cytometry and confocal or two-photon microscopy. The PS exposure marks the integrated changes in the outer leaflet of cell membrane that involve electrostatic potential and hydration, and the attempts are being made to provide direct probing of these changes. This review describes the basic mechanisms underlying the loss of membrane asymmetry during apoptosis and discusses, in comparison with the annexin V-binding assay, the novel fluorescence techniques of detecting apoptosis on cellular membrane level. In more detail we describe the detection method based on smart fluorescent dye F2N12S incorporated into outer leaflet of cell membrane and reporting on apoptotic cell transformation by easily detectable change of the spectral distribution of fluorescent emission. It can be adapted to any assay format.
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Affiliation(s)
- Alexander P Demchenko
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kiev, 01030, Ukraine,
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Zhou L, Huang G, Wang S, Wu J, Lee WG, Chen Y, Xu F, Lu T. Advances in cell-based biosensors using three-dimensional cell-encapsulating hydrogels. Biotechnol J 2012; 6:1466-76. [PMID: 22162496 DOI: 10.1002/biot.201100098] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Cell-based biosensors (CBBs) have emerged as promising biotechnical tools whereby various cell types can be used as basic sensing units to detect external stimuli. Specifically, CBBs have been applied in environmental monitoring, drug screening, clinical diagnosis and biosecurity. For these applications, CBBs offer several advantages over conventional molecular-based biosensors or living animal-based approaches, such as the capability to better mimic physiological situations, to enhance detection specificity and sensitivity, and to detect unknown compounds and toxins. On the other hand, existing CBBs suffer from several limitations, such as weak cell-substrate attachment, two-dimensional (2D) cell microenvironment, and limited shelf life. An emerging method for scaffold-free three-dimensional (3D) cell culture uses hydrogels to encapsulate cells. Advances in novel biomaterials and nano/microscale technologies have enabled encapsulation of cells in hydrogels to fabricate 3D CBBs, which hold great potential for addressing the limitation in existing 2D CBBs. Here, we present an overview of the emerging hydrogel-based CBBs, their applications in pathogen/toxin detection, drug screening and screening of cell-biomaterials interaction, and the associated challenges and potential solutions.
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Affiliation(s)
- Lihong Zhou
- Biomedical Engineering and Biomechanics Center, Xi'an Jiaotong University, Xi'an, P R China
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20
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Dendronization: A Useful Synthetic Strategy to Prepare Multifunctional Materials. Polymers (Basel) 2012. [DOI: 10.3390/polym4010355] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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21
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Wang Y, Wang J, Yang F, Yang X. Probing Biomolecular Interactions with Dual Polarization Interferometry: Real-Time and Label-Free Coralyne Detection by Use of Homoadenine DNA Oligonucleotide. Anal Chem 2011; 84:924-30. [DOI: 10.1021/ac2019443] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yong Wang
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
China
- Graduate School of the Chinese Academy of Sciences, Beijing 100039,
China
| | - Juan Wang
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
China
- Graduate School of the Chinese Academy of Sciences, Beijing 100039,
China
| | - Fan Yang
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
China
| | - Xiurong Yang
- State Key
Laboratory of Electroanalytical
Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022,
China
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22
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Miranda FF, Brient-Litzler E, Zidane N, Pecorari F, Bedouelle H. Reagentless fluorescent biosensors from artificial families of antigen binding proteins. Biosens Bioelectron 2011; 26:4184-90. [PMID: 21565483 DOI: 10.1016/j.bios.2011.04.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Revised: 04/14/2011] [Accepted: 04/15/2011] [Indexed: 01/10/2023]
Abstract
Antibodies and artificial families of antigen binding proteins (AgBP) are constituted by a connected set of hypervariable (or randomized) residue positions, supported by a constant polypeptide backbone. The residues that form the binding site for a given antigen, are selected among the hypervariable residues. We showed that it is possible to transform any AgBP of these families into a reagentless fluorescent biosensor, specific of the target antigen, simply by coupling a solvatochromic fluorophore to one of the hypervariable residues that have little or no importance for the interaction with the antigen, after changing this residue into cysteine by mutagenesis. We validated this approach with a DARPin (Designed Ankyrin Repeat Protein) and a Nanofitin (also known as Affitin) with high success rates. Reagentless fluorescent biosensors recognize their antigen in an immediate, quantitative, selective and specific way, without any manipulation of the sample to analyze or addition of reagent.
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Affiliation(s)
- Frederico F Miranda
- Institut Pasteur, Department of Infection and Epidemiology, Unit of Molecular Prevention and Therapy of Human Diseases, 25 rue Docteur Roux, 75724 Paris Cedex 15, France
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23
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Laurino P, Kikkeri R, Azzouz N, Seeberger PH. Detection of bacteria using glyco-dendronized polylysine prepared by continuous flow photofunctionalization. NANO LETTERS 2011; 11:73-78. [PMID: 21114331 DOI: 10.1021/nl102821f] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Biocompatible glyco-dendronized poly-l-lysine (PLL) polymers carry either three or nine mannose- or galactose-bearing dendrons that selectively bind, and thus can be used to detect, bacteria. Central to the synthesis of glyco-dendronized polymers was the development of a continuous flow [2 + 2] photocycloaddition reaction to connect the dendrons and PLL. Glycodendronized polymers cluster bacteria by binding to cell-surface carbohydrate receptors and thereby result in an easy read-out using microscopic analyses.
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Affiliation(s)
- Paola Laurino
- Max Planck Institute for Colloids and Interfaces, Department of Biomolecular Systems, Research Campus Golm, 14476 Potsdam, Germany
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24
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Xiong S, Wang S, Tang X, Wang Z. Four new metal–organic frameworks constructed from H2DBTDC-O2 (H2DBTDC-O2 = dibenzothiophene-5,5′-dioxide-3,7-dicarboxylic acid) ligand with guest-responsive photoluminescence. CrystEngComm 2011. [DOI: 10.1039/c0ce00422g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Lalevée S, Bour G, Quinternet M, Samarut E, Kessler P, Vitorino M, Bruck N, Delsuc MA, Vonesch JL, Kieffer B, Rochette-Egly C. Vinexinß, an atypical "sensor" of retinoic acid receptor gamma signaling: union and sequestration, separation, and phosphorylation. FASEB J 2010; 24:4523-34. [PMID: 20634350 DOI: 10.1096/fj.10-160572] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
The transcriptional activity of nuclear retinoic acid receptors (RARs) relies on the association/dissociation of coregulators at the ligand-binding domain. However, we determined that the N-terminal domain (NTD) also plays a role through its phosphorylation, and we isolated vinexinβ, a cytoskeleton protein with three SH3 domains, as a new partner of the RARγ NTD. Here we deciphered the mechanism of the interaction and its role in RARγ-mediated transcription. By combining molecular and biophysical (surface plasmon resonance, NMR, and fluorescence resonance energy transfer) approaches, we demonstrated that the third SH3 domain of vinexinβ interacts with a proline-rich domain (PRD) located in RARγ NTD and that phosphorylation at a serine located in the PRD abrogates the interaction. The affinity of the interaction was also evaluated. In vivo, vinexinβ represses RARγ-mediated transcription and we dissected the underlying mechanism in chromatin immunoprecipitation experiments performed with F9 cells expressing RARγ wild type or mutated at the phosphorylation site. In the absence of retinoic acid (RA), vinexinβ does not occupy RARγ target gene promoters and sequesters nonphosphorylated RARγ out of promoters. In response to RA, RARγ becomes phosphorylated and dissociates from vinexinβ. This separation allows RARγ to occupy promoters. This is the first report of an RAR corepressor association/dissociation out of promoters and regulated by phosphorylation.
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Affiliation(s)
- Sébastien Lalevée
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de la Santé et de la Recherche Médicale (INSERM), U596, Illkirch, France
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26
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Abstract
Aptamers are DNA or RNA oligonucleotides that can bind with high affinity and specificity to a wide range of targets such as proteins, metal ions or pathogenic microorganisms. Soluble aptamers and aptazymes have been used as sensing elements for developing homogeneous assays in a solution phase, the whole sensing process being carried out in a homogeneous solution. Contrary to most conventional heterogeneous assays that are time-consuming and labor-intensive, aptamer-based homogeneous assays are simple, easy-to-perform, rapid and do not require immobilization nor washing steps. To our knowledge, this review is the first entirely dedicated to aptamer-based homogeneous assays. Optical detection appears as the most developed technique. Colorimetry represents the simplest sensing mode that occupies a very important position among aptamer-based assays, involving gold nanoparticle aggregation (with unmodified or aptamer-modified gold NPs), the formation of HRP-mimicking DNAzyme with hemin, dye displacement or interactions with a cationic polymer. Fluorescence that is highly sensitive offers the most developed detection mode. Aptamers can be labeled or not, to give rise to turn-on or usually less sensitive turn-off fluorescent assays. Newly reported and thus less developed non-conventional magnetic resonance imaging (MRI) and electrochemistry also recently appeared in the literature, thrombin still remains the main detected target. Homogeneous assays based on aptazyme, an aptamer sequence connected to a known ribozyme motif, are also described in this review, involving optical detection, by colorimetry or fluorescence.
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Affiliation(s)
- Audrey Sassolas
- CNRS, UMR 5246, ICBMS, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Génie Enzymatique, Membranes Biomimétiques et Assemblages Supramoléculaires (GEMBAS), Université Lyon 1, Bât CPE, 43 boulevard du 11 novembre 1918, Villeurbanne, F-69622, France
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27
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Jung JM, Yoo HW, Stellacci F, Jung HT. Two-photon excited fluorescence enhancement for ultrasensitive DNA detection on large-area gold nanopatterns. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:2542-6. [PMID: 20461719 DOI: 10.1002/adma.200903745] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Affiliation(s)
- Jin-Mi Jung
- Department of Chemical and Biomolecular Engineering (BK-21), Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea
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28
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A peptide-based fluorescent ratiometric sensor for quantitative detection of proteins. Anal Biochem 2010; 401:188-95. [PMID: 20188691 DOI: 10.1016/j.ab.2010.02.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 02/22/2010] [Accepted: 02/23/2010] [Indexed: 11/21/2022]
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29
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Stylianou KC, Heck R, Chong SY, Bacsa J, Jones JTA, Khimyak YZ, Bradshaw D, Rosseinsky MJ. A Guest-Responsive Fluorescent 3D Microporous Metal−Organic Framework Derived from a Long-Lifetime Pyrene Core. J Am Chem Soc 2010; 132:4119-30. [DOI: 10.1021/ja906041f] [Citation(s) in RCA: 419] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
| | - Romain Heck
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Samantha Y. Chong
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - John Bacsa
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - James T. A. Jones
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | | | - Darren Bradshaw
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
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30
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Comparative Analysis of Fluorescence Reporter Signals Based on Intensity, Anisotropy, Time-Resolution, and Wavelength-Ratiometry. SPRINGER SERIES ON FLUORESCENCE 2010. [DOI: 10.1007/978-3-642-04702-2_1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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31
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Brient-Litzler E, Plückthun A, Bedouelle H. Knowledge-based design of reagentless fluorescent biosensors from a designed ankyrin repeat protein. Protein Eng Des Sel 2009; 23:229-41. [DOI: 10.1093/protein/gzp074] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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32
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ter Maat J, Regeling R, Yang M, Mullings MN, Bent SF, Zuilhof H. Photochemical covalent attachment of alkene-derived monolayers onto hydroxyl-terminated silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:11592-11597. [PMID: 19583192 DOI: 10.1021/la901551t] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The functionalization of optically transparent substrates is of importance, for example, in the field of biosensing. In this article, a new method for modification of silica surfaces is presented that is based on a photochemical reaction of terminal alkenes with the surface. This yields highly hydrophobic surfaces, which are thermally stable up to at least 400 degrees C. The formed monolayer provides chemical passivation of the underlying surface, according to studies showing successful blocking of platinum atomic layer deposition (ALD). The reaction is photochemically initiated, requiring light with a wavelength below 275 nm. X-ray photoelectron spectroscopy and infrared spectroscopy studies show that the alkenes initially bind to the surface hydroxyl groups in Markovnikov fashion. At prolonged reaction times (>5 h), however, oligomerization occurs, resulting in layer growth normal to the surface. The photochemical nature of the reaction enables the use of photolithography as a tool to constructively pattern silica surfaces. Atomic force microscopy shows that the features of the photomask are well transferred. The newly developed method can complement existing patterning methods on silica that are based on soft lithography.
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Affiliation(s)
- Jurjen ter Maat
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
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33
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Abstract
None of the current biodegradable polymers can function as both implant materials and fluorescent imaging probes. The objective of this study was to develop aliphatic biodegradable photoluminescent polymers (BPLPs) and their associated cross-linked variants (CBPLPs) for biomedical applications. BPLPs are degradable oligomers synthesized from biocompatible monomers including citric acid, aliphatic diols, and various amino acids via a convenient and cost-effective polycondensation reaction. BPLPs can be further cross-linked into elastomeric cross-linked polymers, CBPLPs. We have shown representatively that BPLP-cysteine (BPLP-Cys) and BPLP-serine (BPLP-Ser) offer advantages over the traditional fluorescent organic dyes and quantum dots because of their preliminarily demonstrated cytocompatibility in vitro, minimal chronic inflammatory responses in vivo, controlled degradability and high quantum yields (up to 62.33%), tunable fluorescence emission (up to 725 nm), and photostability. The tensile strength of CBPLP-Cys film ranged from 3.25 +/- 0.13 MPa to 6.5 +/- 0.8 MPa and the initial Modulus was in a range of 3.34 +/- 0.15 MPa to 7.02 +/- 1.40 MPa. Elastic CBPLP-Cys could be elongated up to 240 +/- 36%. The compressive modulus of BPLP-Cys (0.6) (1:1:0.6 OD:CA:Cys) porous scaffold was 39.60 +/- 5.90 KPa confirming the soft nature of the scaffolds. BPLPs also possess great processability for micro/nano-fabrication. We demonstrate the feasibility of using BPLP-Ser nanoparticles ("biodegradable quantum dots") for in vitro cellular labeling and noninvasive in vivo imaging of tissue engineering scaffolds. The development of BPLPs and CBPLPs represents a new direction in developing fluorescent biomaterials and could impact tissue engineering, drug delivery, bioimaging.
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34
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35
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Ma Y, Hao R, Shao G, Wang Y. An Excellent Fluorescent Dye with a Twistable Aromatic Chain and Its Axially Chiral Crystals. J Phys Chem A 2009; 113:5066-72. [DOI: 10.1021/jp900514e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yan Ma
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Rui Hao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Guangsheng Shao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Yuan Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
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36
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Doré K, Leclerc M, Boudreau D. Fluorescence Signal Amplification for Ultrasensitive DNA Detection. REVIEWS IN FLUORESCENCE 2009. [DOI: 10.1007/978-0-387-88722-7_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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37
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Antibody orientation enhanced by selective polymer–protein noncovalent interactions. Anal Bioanal Chem 2008; 393:1531-8. [DOI: 10.1007/s00216-008-2567-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Revised: 11/26/2008] [Accepted: 12/05/2008] [Indexed: 10/21/2022]
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38
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39
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Microarray analysis of protein–protein interactions based on FRET using subnanosecond-resolved fluorescence lifetime imaging. Biosens Bioelectron 2008; 24:397-402. [DOI: 10.1016/j.bios.2008.04.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2008] [Revised: 03/14/2008] [Accepted: 04/21/2008] [Indexed: 11/23/2022]
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40
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41
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Klymchenko AS, Shvadchak VV, Yushchenko DA, Jain N, Mély Y. Excited-State Intramolecular Proton Transfer Distinguishes Microenvironments in Single- And Double-Stranded DNA. J Phys Chem B 2008; 112:12050-5. [DOI: 10.1021/jp8058068] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrey S. Klymchenko
- Photophysique des Interactions Biomoléculaires, UMR 7175 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401, Illkirch, France
| | - Volodymyr V. Shvadchak
- Photophysique des Interactions Biomoléculaires, UMR 7175 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401, Illkirch, France
| | - Dmytro A. Yushchenko
- Photophysique des Interactions Biomoléculaires, UMR 7175 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401, Illkirch, France
| | - Namrata Jain
- Photophysique des Interactions Biomoléculaires, UMR 7175 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401, Illkirch, France
| | - Yves Mély
- Photophysique des Interactions Biomoléculaires, UMR 7175 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401, Illkirch, France
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42
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Enander K, Choulier L, Olsson AL, Yushchenko DA, Kanmert D, Klymchenko AS, Demchenko AP, Mély Y, Altschuh D. A peptide-based, ratiometric biosensor construct for direct fluorescence detection of a protein analyte. Bioconjug Chem 2008; 19:1864-70. [PMID: 18693760 DOI: 10.1021/bc800159d] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We present the design, synthesis, and functional evaluation of peptide-based fluorescent constructs for wavelength-ratiometric biosensing of a protein analyte. The concept was shown using the high-affinity model interaction between the 18 amino acid peptide pTMVP and a recombinant antibody fragment, Fab57P. pTMVP was functionalized in two different positions with 6-bromomethyl-2-(2-furanyl)-3-hydroxychromone, an environmentally sensitive fluorophore with a two-band emission. The equilibrium dissociation constant of the interaction between pTMVP and Fab57P was largely preserved upon labeling. The biosensor ability of the labeled peptide constructs was evaluated in terms of the relative intensity change of the emission bands from the normal (N*) and tautomer (T*) excited-state species of the fluorophore ( I(N*)/I(T*)) upon binding of Fab57P. When the peptide was labeled in the C terminus, the I(N*)/I(T*) ratio changed by 40% upon analyte binding, while labeling close to the residues most important for binding resulted in a construct that completely lacked ratiometric biosensor ability. Integrated biosensor elements for reagentless detection, where peptides and ratiometric fluorophores are combined to ensure robustness in both recognition and signaling, are expected to become an important contribution to the design of future protein quantification assays in immobilized formats.
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Affiliation(s)
- Karin Enander
- Division of Molecular Physics, Department of Physics, Chemistry and Biology, Linkoping University, 58183 Linkoping, Sweden.
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43
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Shen J, Sun LD, Yan CH. Luminescent rare earth nanomaterials for bioprobe applications. Dalton Trans 2008:5687-97. [PMID: 18941653 DOI: 10.1039/b805306e] [Citation(s) in RCA: 218] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Inorganic fluorescent nanoparticles (NPs) have initiated an extensive upsurge in biological application research. Just as quantum dots are regarded as a vigorous reinforcement of the organic dye family, rare earth (RE) fluorescent NPs, as another phosphors branch, also possess unique optical characteristics. The advantages of RE NPs in photostability and colorimetric purity make them suitable for bioprobe applications. Since the preparation technologies have been well developed, it is favourable to prompt the research in the interdisciplinary field of biology and material sciences. Herein, we summarize the synthesis and performance, together with bioprobe applications of RE oxide, sulfoxide, vanadate, phosphate, fluoride, and sodium RE fluoride nanomaterials. The prospects of these promising materials as applied in the biological field is described to draw readers' attention and to attract more research interest.
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Affiliation(s)
- Jie Shen
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing
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44
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Potyrailo RA, Mirsky VM. Combinatorial and High-Throughput Development of Sensing Materials: The First 10 Years. Chem Rev 2008; 108:770-813. [DOI: 10.1021/cr068127f] [Citation(s) in RCA: 214] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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45
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Cissell KA, Shrestha S, Purdie J, Kroodsma D, Deo SK. Molecular biosensing system based on intrinsically disordered proteins. Anal Bioanal Chem 2008; 391:1721-9. [PMID: 18193204 DOI: 10.1007/s00216-007-1819-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 12/12/2007] [Accepted: 12/14/2007] [Indexed: 12/20/2022]
Abstract
Intrinsically disordered proteins (IDPs) that undergo structural transition upon binding their target molecules are becoming increasingly known. IDPs, because of their binding specificity and induced folding properties, can serve as biological recognition elements for sensing applications. In this paper, BRCA1, an IDP, was utilized as the biological recognition element to detect tumor suppressor protein p53 through the BRCA1/p53 binding interaction to serve as a proof-of-concept for the use of IDPs as recognition elements. The binding resulted in a disordered-to-ordered BRCA1 conformational change, as seen in our circular dichroism (CD) measurements. This conformational change in BRCA1 (residues 219-498) was utilized in the detection of p53 (residues 311-393) via both intrinsic and extrinsic fluorescent probes. Intrinsic tryptophan residues within the BRCA1 sequence detected p53 (311-393) with a detection limit of 0.559 nM (0.112 pmol). Two environmentally sensitive fluorophores, tetramethylrhodamine-5-maleimide (TMR) and 6-((5-dimethylaminonaphthalene-1-sulfonyl)amino)hexanoic acid, succinimidyl ester (dansyl-X, SE) were conjugated to BRCA1 (219-498). Dansyl-X, SE-conjugated BRCA1 (219-498) detected p53 (311-393) with a detection limit of 1.50 nM (0.300 pmol). The sensitivities for TMR and dansyl-X, SE-conjugated BRCA1 for the detection of p53 were nearly threefold and twofold higher, respectively, than the sensitivity reported using intrinsic BRCA1 tryptophan fluorescence. CD measurements did not reveal a disruption of p53/dye-conjugated BRCA1 binding, thus validating the applicability of environmentally sensitive fluorophores as transduction moieties to detect molecules which bind to IDPs and induce a structural change.
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Affiliation(s)
- Kyle A Cissell
- Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, 402 N. Blackford Street, Room LD 326, Indianapolis, IN, 46217, USA
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Shanker N, Bane SL. Basic Aspects of Absorption and Fluorescence Spectroscopy and Resonance Energy Transfer Methods. Methods Cell Biol 2008; 84:213-42. [DOI: 10.1016/s0091-679x(07)84008-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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47
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Hou X, Liu B, Deng X, Zhang B, Chen H, Luo R. Covalent immobilization of glucose oxidase onto poly(styrene-co-glycidyl methacrylate) monodisperse fluorescent microspheres synthesized by dispersion polymerization. Anal Biochem 2007; 368:100-10. [PMID: 17562322 DOI: 10.1016/j.ab.2007.04.034] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2007] [Revised: 04/20/2007] [Accepted: 04/23/2007] [Indexed: 11/23/2022]
Abstract
In this study, micron-sized poly(styrene-co-glycidyl methacrylate) (PSt-GMA) fluorescent microspheres of 5.1microm in diameter were synthesized via dispersion polymerization of styrene and glycidyl methacrylate in the presence of 1,4-bis(5-phenyloxazol-2-yl) benzene (POPOP), which provided surface functional groups for covalent immobilization of enzymes. In an effort to study the biocompatibility of the microspheres' surface, glucose oxidase and beta-d-(+)-glucose were selected as a catalytic system for enzymatic assays. A colorimetric method was adopted in evaluating enzymatic activity by introducing horseradish peroxidase (HRP). Both the immobilization amount and the apparent activity of immobilized glucose oxidase from Aspergillus niger (GOD) were determined at different conditions. The results show that the immobilized enzymes retained approximately 28 to 34% activity, as compared with free enzymes, without pronounced alteration of the optimum pH and temperature. Kinetics studies show that the corresponding values of K(m) and V(max) are 23.2944 mM and 21.6450M/min.mg GOD for free enzymes and 35.1780 mM and 15.4799M/min.mg GOD for immobilized enzymes. The operational stability studies show that immobilized GOD could retain nearly 50% initial activity after being washed 20 times. The results suggest that the resultant PSt-GMA fluorescent microspheres provide a suitable surface for covalent immobilizing biomolecules; therefore, they have the potential of being used in fluorescence-based immunoassays in high-throughput screening or biosensors.
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Affiliation(s)
- Xiaohui Hou
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
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