1
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Xiong X, Tang Y, Zhao J, Zhao S. Oligonucleotide-stabilized fluorescent silver nanoclusters for the specific and sensitive detection of biotin. Analyst 2017; 141:1499-505. [PMID: 26750716 DOI: 10.1039/c5an02307f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A novel biotin fluorescent probe based on oligonucleotide-stabilized silver nanoclusters (DNA-AgNCs) was synthesized by employing a biotinylated cytosine-rich sequence as a synthesized template. The fluorescence properties of the DNA-AgNCs are related to the modified position of the DNA. When biotin is linked to the middle thymine base of the DNA sequence, the DNA-AgNCs emit the strongest fluorescence. Moreover, the stability of the DNA-AgNCs was affected by avidin through biotin-avidin binding, quenching the fluorescence of the DNA-AgNCs. In contrast, if free biotin is further introduced into this system, the quenching is apparently weakened by competition, leading to the restoration of fluorescence. This phenomenon can be utilized for the detection of biotin. Under the optimal conditions, the fluorescence recovery is linearly proportional to the concentration of biotin in the range of 10 nM-1.0 μM with a detection limit of 6.0 nM. This DNA-AgNCs probe with excellent fluorescent properties is sensitive and selective for the detection of biotin and has been applied for the determination of biotin in wheat flour.
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Affiliation(s)
- Xiaoli Xiong
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Yan Tang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Jingjin Zhao
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China.
| | - Shulin Zhao
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China.
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2
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Wessig P, Behrends N, Kumke MU, Eisold U, Meiling T, Hille C. Two-photon FRET pairs based on coumarin and DBD dyes. RSC Adv 2016. [DOI: 10.1039/c6ra03983a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis and photophysical properties of coumarin–DBD FRET pairs, which are also suitable for two-photon excitation and fluorescence-lifetime imaging microscopy.
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Affiliation(s)
- P. Wessig
- Institut für Chemie
- Universität Potsdam
- 14476 Potsdam
- Germany
| | - N. Behrends
- Institut für Chemie
- Universität Potsdam
- 14476 Potsdam
- Germany
| | - M. U. Kumke
- Institut für Chemie
- Universität Potsdam
- 14476 Potsdam
- Germany
| | - U. Eisold
- Institut für Chemie
- Universität Potsdam
- 14476 Potsdam
- Germany
| | - T. Meiling
- Institut für Chemie
- Universität Potsdam
- 14476 Potsdam
- Germany
| | - C. Hille
- Institut für Chemie
- Universität Potsdam
- 14476 Potsdam
- Germany
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3
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Yuan L, Jin F, Zeng Z, Liu C, Luo S, Wu J. Engineering a FRET strategy to achieve a ratiometric two-photon fluorescence response with a large emission shift and its application to fluorescence imaging. Chem Sci 2015; 6:2360-2365. [PMID: 28706654 PMCID: PMC5488213 DOI: 10.1039/c4sc03883e] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 01/21/2015] [Indexed: 11/21/2022] Open
Abstract
Two-photon excitation (TPE) probe-based fluorescence imaging has become one of the most attractive diagnostic techniques to investigate biomolecules and biological events in live cells and tissues. At the current stage most of the TPE-based sensing is reflected by fluorescence intensity changes. Nevertheless the mere altering of intensity could be facilely affected by ambient conditions. On the other hand, TPE probes based on an intramolecular charge transfer (ICT) strategy could solve this problem to some extent with a morphology change-induced emission shift. However their applications are yet constrained due to the inherent limitation of ICT, e.g. the high degree of overlap of two emissions bands and shifts of the TPE maxima. To achieve the desired TPE-based sensing and to circumvent the problems stated above, we adapted a Förster resonance energy transfer (FRET) strategy to develop small molecule ratiometric TPE fluorescent probes. Our FRET-based ratiometric TPE fluorescent probe displays a remarkable emission shift (up to 125 nm) with two well-resolved emission bands. Hence the ratio of these two emission bands could enable the measurement of fluorescence changes more accurately, thus further improving imaging in live cells and deep tissues. To the best of our knowledge, the current reported probe has the largest emission shift among all the small molecule ratiometric TPE fluorescent probes while the maximum TPE wavelength remains unchanged. This work has provided a FRET approach to fabricate novel small molecule ratiometric TPE fluorescent probes that improve imaging in deep tissues.
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Affiliation(s)
- Lin Yuan
- State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China . ;
| | - Fangping Jin
- State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China . ;
| | - Zebing Zeng
- State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China . ;
| | - Chengbin Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China . ;
| | - Shenglian Luo
- State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , P. R. China . ;
| | - Jishan Wu
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 , Singapore
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4
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Wang D, Ren AM, Guo JF, Zou LY, Huang S. Computational design of a two-photon excited FRET-based ratiometric fluorescent Cu2+ probe for living cell imaging. RSC Adv 2015. [DOI: 10.1039/c5ra18393f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A novel TP FRET ratiometric fluorescent probe 2a for Cu2+ is designed. 2a has a large TPA peak in the near-infrared light region and its energy transfer efficiency is nearly 100%.
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Affiliation(s)
- Dan Wang
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Ai-Min Ren
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Jing-Fu Guo
- School of Physics
- Northeast Normal University
- Changchun 130021
- People's Republic of China
| | - Lu-Yi Zou
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130023
- People's Republic of China
| | - Shuang Huang
- School of Mathematics and Physics
- Changzhou University
- Changzhou 213164
- People's Republic of China
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5
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Sun Q, Tian H, Qu H, Sun D, Chen Z, Duan L, Zhang W, Qian J. Discrimination between streptavidin and avidin with fluorescent affinity-based probes. Analyst 2015; 140:4648-53. [DOI: 10.1039/c5an00585j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SPS3 showed a high fluorescence response toward streptavidin and could discriminate biotin receptor over-expressed Hela cells from other cells.
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Affiliation(s)
- Qian Sun
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Haiyu Tian
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Haoran Qu
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Deheng Sun
- School of Pharmacy
- East China University of Science and Technology
- Shanghai
- China
| | - Zhuo Chen
- School of Pharmacy
- East China University of Science and Technology
- Shanghai
- China
| | - Liping Duan
- National Institute of Parasitic Diseases
- Chinese Center for Disease Control and Prevention
- Shanghai
- China
| | - Weibing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Junhong Qian
- Shanghai Key Laboratory of Functional Materials Chemistry
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
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Alasia S, Cocito C, Merighi A, Lossi L. Real-time visualization of caspase-3 activation by fluorescence resonance energy transfer (FRET). Methods Mol Biol 2015; 1254:99-113. [PMID: 25431060 DOI: 10.1007/978-1-4939-2152-2_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
As apoptosis occurs via a complex signaling cascade that is tightly regulated at multiple cell points, different methods exist to evaluate the activity of the proteins involved in the intracellular apoptotic pathways and the phenotype of apoptotic neurons. Detention of the activity of the enzyme caspase-3, the key executioner caspase in programmed cell death, by laser scanning confocal fluorescence microscopy and the fluorescence resonance energy transfer technology is an alternative approach to classical standard techniques, such as Western blotting, activity assays, or histological techniques, and allows working with both fixed and living cells. This technique combined with the organotypic culture approach ex vivo represents a valid tool for the study of the mechanisms of neuronal survival /death and neuroprotection.
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Affiliation(s)
- Silvia Alasia
- Department of Veterinary Sciences, University of Turin, Via Leonardo da Vinci 44, Turin, Grugliasco, 10095, Italy
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7
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Spindel S, Sapsford KE. Evaluation of optical detection platforms for multiplexed detection of proteins and the need for point-of-care biosensors for clinical use. SENSORS (BASEL, SWITZERLAND) 2014; 14:22313-41. [PMID: 25429414 PMCID: PMC4299016 DOI: 10.3390/s141222313] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 11/12/2014] [Accepted: 11/13/2014] [Indexed: 11/16/2022]
Abstract
This review investigates optical sensor platforms for protein multiplexing, the ability to analyze multiple analytes simultaneously. Multiplexing is becoming increasingly important for clinical needs because disease and therapeutic response often involve the interplay between a variety of complex biological networks encompassing multiple, rather than single, proteins. Multiplexing is generally achieved through one of two routes, either through spatial separation on a surface (different wells or spots) or with the use of unique identifiers/labels (such as spectral separation-different colored dyes, or unique beads-size or color). The strengths and weaknesses of conventional platforms such as immunoassays and new platforms involving protein arrays and lab-on-a-chip technology, including commercially-available devices, are discussed. Three major public health concerns are identified whereby detecting medically-relevant markers using Point-of-Care (POC) multiplex assays could potentially allow for a more efficient diagnosis and treatment of diseases.
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Affiliation(s)
- Samantha Spindel
- Division of Biology, Chemistry, and Materials Science Office of Science and Engineering Laboratories; U.S. Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
| | - Kim E Sapsford
- Division of Biology, Chemistry, and Materials Science Office of Science and Engineering Laboratories; U.S. Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, MD 20993, USA.
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8
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Chakraborty S, Núñez D, Hu SY, Domingo MP, Pardo J, Karmenyan A, Chiou A. FRET based quantification and screening technology platform for the interactions of leukocyte function-associated antigen-1 (LFA-1) with intercellular adhesion molecule-1 (ICAM-1). PLoS One 2014; 9:e102572. [PMID: 25032811 PMCID: PMC4102529 DOI: 10.1371/journal.pone.0102572] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 06/19/2014] [Indexed: 11/29/2022] Open
Abstract
The interaction between leukocyte function-associated antigen-1(LFA-1) and intercellular adhesion molecule-1 (ICAM-1) plays a pivotal role in cellular adhesion including the extravasation and inflammatory response of leukocytes, and also in the formation of immunological synapse. However, irregular expressions of LFA-1 or ICAM-1 or both may lead to autoimmune diseases, metastasis cancer, etc. Thus, the LFA-1/ICAM-1 interaction may serve as a potential therapeutic target for the treatment of these diseases. Here, we developed one simple 'in solution' steady state fluorescence resonance energy transfer (FRET) technique to obtain the dissociation constant (Kd) of the interaction between LFA-1 and ICAM-1. Moreover, we developed the assay into a screening platform to identify peptides and small molecules that inhibit the LFA-1/ICAM-1 interaction. For the FRET pair, we used Alexa Fluor 488-LFA-1 conjugate as donor and Alexa Fluor 555-human recombinant ICAM-1 (D1-D2-Fc) as acceptor. From our quantitative FRET analysis, the Kd between LFA-1 and D1-D2-Fc was determined to be 17.93±1.34 nM. Both the Kd determination and screening assay were performed in a 96-well plate platform, providing the opportunity to develop it into a high-throughput assay. This is the first reported work which applies FRET based technique to determine Kd as well as classifying inhibitors of the LFA-1/ICAM-1 interaction.
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Affiliation(s)
| | - David Núñez
- Instituto de Carboquímica, CSIC, Zaragoza, Spain
- Immune Effector Cells Group, Aragón Health Research Institute, Biomedical Research Centre of Aragón, Zaragoza, Spain
| | - Shih-Yang Hu
- Institute of Biophotonics, National Yang-Ming University, Taipei, Taiwan
| | - María Pilar Domingo
- Instituto de Carboquímica, CSIC, Zaragoza, Spain
- Immune Effector Cells Group, Aragón Health Research Institute, Biomedical Research Centre of Aragón, Zaragoza, Spain
| | - Julian Pardo
- Immune Effector Cells Group, Aragón Health Research Institute, Biomedical Research Centre of Aragón, Zaragoza, Spain
- Department of Biochemistry and Molecular and Cell Biology, Facultad de Ciencias, University of Zaragoza, Zaragoza, Spain
- Aragón I+D Foundation, Government of Aragon, Zaragoza, Spain
- Nanoscience Institute of Aragón, Aragón I+D Foundation, University of Zaragoza, Zaragoza, Spain
| | - Artashes Karmenyan
- Biophotonics & Molecular Imaging Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Eva Ma Gálvez
- Instituto de Carboquímica, CSIC, Zaragoza, Spain
- Immune Effector Cells Group, Aragón Health Research Institute, Biomedical Research Centre of Aragón, Zaragoza, Spain
| | - Arthur Chiou
- Institute of Biophotonics, National Yang-Ming University, Taipei, Taiwan
- Biophotonics & Molecular Imaging Research Center, National Yang-Ming University, Taipei, Taiwan
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9
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Sun Q, Qian J, Tian H, Duan L, Zhang W. Rational design of biotinylated probes: fluorescent turn-on detection of (strept)avidin and bioimaging in cancer cells. Chem Commun (Camb) 2014; 50:8518-21. [DOI: 10.1039/c4cc03315a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Collado D, Remón P, Vida Y, Najera F, Sen P, Pischel U, Perez-Inestrosa E. Energy Transfer in Aminonaphthalimide-Boron-Dipyrromethene (BODIPY) Dyads upon One- and Two-Photon Excitation: Applications for Cellular Imaging. Chem Asian J 2013; 9:797-804. [DOI: 10.1002/asia.201301334] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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11
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Liu Y, Dong X, Sun J, Zhong C, Li B, You X, Liu B, Liu Z. Two-photon fluorescent probe for cadmium imaging in cells. Analyst 2012; 137:1837-45. [PMID: 22388568 DOI: 10.1039/c2an16254g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel two-photon excited fluorescent probe for cadmium (named as TPCd) was designed and synthesized utilizing a prodan (6-acetyl-2-methoxynaphthalene) derivative as the two-photon fluorophore and an o-phenylenediamine derivative as the Cd(2+) chelator, which possessed favorable photophysical properties and good water-solubility. The probe was designed with a photoinduced electron transfer (PET) mechanism and thus was weakly fluorescent itself. After binding with Cd(2+) which blocked the PET process, the fluorescence intensity of the probe was enhanced by up to 15-fold under one-photon excitation (OPE) and 27-fold under two-photon excitation (TPE), respectively. The two-photon action cross-section (Φδ) of the TPCd-Cd complex at 740 nm reached 109 GM compared to 3.6 GM for free TPCd, indicating the promising prospect of the probe in two-photon application. TPCd chelated Cd(2+) with 1 : 1 stoichiometry, and the apparent dissociation constant (K(d)) was 6.1 × 10(-5) M for the one-photon mode and 7.2 × 10(-5) M for the two-photon mode. The probe responded to Cd(2+) over a wide linear range from 0.1 to 30 μM with a detection limit of 0.04 μM. High selectivity of the probe towards Cd(2+) was acquired in Tris-HCl/sodium phosphate buffer. The probe was pH-independent in the biologically relevant pH range and non-toxic to living cells at reasonable concentration levels, warranting its in vivo applications. Through two-photon microscopy imaging, the probe was successfully applied to detect Cd(2+) uptake in living HepG2 cells.
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Affiliation(s)
- Yongyou Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
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12
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Opanasyuk O, Mikaelsson T, Ryderfors L, Mukhtar E, Johansson LBÅ. On the analyses of fluorescence depolarisation data in the presence of electronic energy migration. Part II: Applying and evaluating two-photon excited fluorescence. Phys Chem Chem Phys 2012; 14:1917-22. [DOI: 10.1039/c2cp23177h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Opanasyuk O, Johansson LBÅ. On the analyses of fluorescence depolarisation data in the presence of electronic energy migration. Part I: Theory and general description. Phys Chem Chem Phys 2011; 14:1907-16. [PMID: 22158832 DOI: 10.1039/c1cp22483b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new and general procedure is described for a detailed analysis of time-resolved fluorescence depolarisation data in the presence of electronic energy migration. An isotropic ensemble of bifluorophoric molecules (D(1)-R-D(2)) has been studied to demonstrate its utility. Intramolecular donor-donor energy migration occurs between the two donor groups (D), which are covalently connected to a rigid linker group (R). These groups undergo restricted reorientational motions with respect to the R group. The analysis of depolarisation data basically involves the search for best-fit parameters which describe the local reorientational motions, the intermolecular D(1)-D(2) distance, as well as the mutual orientations of the donors. For this, the analysis is partly performed on the Fourier domain and the best-fit parameters are determined by using an approach based on a Genetic Algorithm. The energy migration process has been described by using Monte Carlo simulations and an extended Förster theory (EFT). It is found that the EFT provides the least time-consuming computational method. Since one-photon and two-photon excited fluorescence experiments can be applied for energy migration studies, a general and unified theoretical formulation is given.
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Affiliation(s)
- Oleg Opanasyuk
- Department of Chemistry, Umeå University, S-901 87 Umeå, Sweden
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14
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Wang Y, Bao L, Liu Z, Pang DW. Aptamer biosensor based on fluorescence resonance energy transfer from upconverting phosphors to carbon nanoparticles for thrombin detection in human plasma. Anal Chem 2011; 83:8130-7. [PMID: 21923110 DOI: 10.1021/ac201631b] [Citation(s) in RCA: 254] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We presented a new aptamer biosensor for thrombin in this work, which was based on fluorescence resonance energy transfer (FRET) from upconverting phosphors (UCPs) to carbon nanoparticles (CNPs). The poly(acrylic acid) (PAA) functionalized UCPs were covalently tagged with a thrombin aptamer (5'-NH(2)- GGTTGGTGTGGTTGG-3'), which bound to the surface of CNPs through π-π stacking interaction. As a result, the energy donor and acceptor were taken into close proximity, leading to the quenching of fluorescence of UCPs. A maximum fluorescence quenching rate of 89% was acquired under optimized conditions. In the presence of thrombin, which induced the aptamer to form quadruplex structure, the π-π interaction was weakened, and thus, the acceptor was separated from the donor blocking the FRET process. The fluorescence of UCPs was therefore restored in a thrombin concentration-dependent manner, which built the foundation of thrombin quantification. The sensor provided a linear range from 0.5 to 20 nM for thrombin with a detection limit of 0.18 nM in an aqueous buffer. The same linear range was obtained in spiked human serum samples with a slightly higher detection limit (0.25 nM), demonstrating high robustness of the sensor in a complex biological sample matrix. As a practical application, the sensor was used to monitor thrombin level in human plasma with satisfactory results obtained. This is the first time that UCPs and CNPs were employed as a donor-acceptor pair to construct FRET-based biosensors, which utilized both the photophysical merits of UCPs and the superquenching ability of CNPs and thus afforded favorable analytical performances. This work also opened the opportunity to develop biosensors for other targets using this UCPs-CNPs system.
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Affiliation(s)
- Yuhui Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
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15
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Zhang C, Yuan Y, Zhang S, Wang Y, Liu Z. Biosensing platform based on fluorescence resonance energy transfer from upconverting nanocrystals to graphene oxide. Angew Chem Int Ed Engl 2011; 50:6851-4. [PMID: 21656878 DOI: 10.1002/anie.201100769] [Citation(s) in RCA: 215] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2011] [Revised: 03/04/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Cuiling Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
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16
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Biosensing Platform Based on Fluorescence Resonance Energy Transfer from Upconverting Nanocrystals to Graphene Oxide. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100769] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Liu L, Li H, Qiu T, Zhou G, Wong KY, He Z, Liu Z. Construction of a molecular beacon based on two-photon excited fluorescence resonance energy transfer with quantum dot as donor. Chem Commun (Camb) 2011; 47:2622-4. [DOI: 10.1039/c0cc04712k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Liu L, Dong X, Xiao Y, Lian W, Liu Z. Two-photon excited fluorescent chemosensor for homogeneous determination of copper(ii) in aqueous media and complicated biological matrix. Analyst 2011; 136:2139-45. [DOI: 10.1039/c0an00933d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Liu L, Dong X, Lian W, Peng X, Liu Z, He Z, Wang Q. Homogeneous Competitive Hybridization Assay Based on Two-Photon Excitation Fluorescence Resonance Energy Transfer. Anal Chem 2010; 82:1381-8. [DOI: 10.1021/ac902467w] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lingzhi Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Xiaohu Dong
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Wenlong Lian
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Xiaoniu Peng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Zhihong Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People’s Republic of China
| | - Ququan Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People’s Republic of China
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20
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Liao F, Xie Y, Yang X, Deng P, Chen Y, Xie G, Zhu S, Liu B, Yuan H, Liao J, Zhao Y, Yu M. Homogeneous noncompetitive assay of protein via Förster-resonance-energy-transfer with tryptophan residue(s) as intrinsic donor(s) and fluorescent ligand as acceptor. Biosens Bioelectron 2009; 25:112-7. [PMID: 19586766 DOI: 10.1016/j.bios.2009.06.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2009] [Revised: 05/30/2009] [Accepted: 06/08/2009] [Indexed: 11/19/2022]
Affiliation(s)
- Fei Liao
- Chongqing Key Laboratory of Biochemical & Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China.
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Ogawa M, Kosaka N, Choyke PL, Kobayashi H. Tumor-specific detection of an optically targeted antibody combined with a quencher-conjugated neutravidin "quencher-chaser": a dual "quench and chase" strategy to improve target to nontarget ratios for molecular imaging of cancer. Bioconjug Chem 2009; 20:147-54. [PMID: 19072537 DOI: 10.1021/bc8003765] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In vivo molecular cancer imaging with monoclonal antibodies has great potential not only for cancer detection, but also for cancer characterization. However, the prolonged retention of intravenously injected antibody in the blood causes low target tumor-to-background ratio (TBR). Avidin has been used as a "chase" to clear the unbound, circulating biotinylated antibody and decrease the background signal. Here, we utilize a combined approach of a fluorescence resonance energy transfer (FRET) quenched antibody with an "avidin chase" to increase TBR. Trastuzumab, a humanized monoclonal antibody against human epidermal growth factor receptor type 2 (HER2), was biotinylated and conjugated with the near-infrared (NIR) fluorophore Alexa680 to synthesize Tra-Alexa680-biotin. Next, the FRET quencher, QSY-21, was conjugated to avidin, neutravidin (nAv), or streptavidin (sAv), thus creating Av-QSY21, nAv-QSY21, or sAv-QSY21 as "chasers". The fluorescence was quenched in vitro by binding Tra-Alexa680-biotin to Av-QSY21, nAv-QSY21, or sAv-QSY21. To evaluate if the injection of quencher-conjugated avidin derivatives can improve target TBR by using a dual "quench and chase" strategy, both target (3T3/HER2+) and nontarget (Balb3T3/ZsGreen) tumor-bearing mice were employed. The "FRET quench" effect induced by all the QSY21 avidin-based conjugates reduced but did not totally eliminate background signal from the blood pool. The addition of nAv-QSY21 administration increased target TBR mainly because of the "chase" effect where unbound conjugated antibody was preferentially cleared to the liver. The relatively slow clearance of unbound nAv-QSY21 leads to further reductions in background signal by leaking out of the vascular space and binding to unbound antibodies in the extravascular space of tumors, resulting in decreased nontarget tumor-to-background ratios but increased target TBR due to the "FRET quench" effect, because target-bound antibodies were internalized and could not bind to nAv-QSY21. In conclusion, the proposed "quench-and-chase" system combines two strategies, fluorescent quenching and avidin chasing, to improve target TBR and reduce nontarget TBR, which should result in both improved tumor sensitivity and improved specificity.
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Affiliation(s)
- Mikako Ogawa
- Molecular Imaging Program, Center for Cancer Research, National Cancer Institute, National Institute of Health, Bethesda, MD 20892-1088, USA
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Xie MY, Yu L, He H, Yu XF. Synthesis of highly fluorescent LaF3:Ln3+/LaF3 core/shell nanocrystals by a surfactant-free aqueous solution route. J SOLID STATE CHEM 2009. [DOI: 10.1016/j.jssc.2008.12.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Dong X, Yang Y, Sun J, Liu Z, Liu BF. Two-photon excited fluorescent probes for calcium based on internal charge transfer. Chem Commun (Camb) 2009:3883-5. [DOI: 10.1039/b905571a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Liu L, Shao M, Dong X, Yu X, Liu Z, He Z, Wang Q. Homogeneous Immunoassay Based on Two-Photon Excitation Fluorescence Resonance Energy Transfer. Anal Chem 2008; 80:7735-41. [DOI: 10.1021/ac801106w] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lingzhi Liu
- College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China
| | - Mei Shao
- College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China
| | - Xiaohu Dong
- College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China
| | - Xuefeng Yu
- College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China
| | - Zhihong Liu
- College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China
| | - Zhike He
- College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China
| | - Ququan Wang
- College of Chemistry and Molecular Sciences, and Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China
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