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Jouclas R, Laine S, Eliseeva SV, Mandel J, Szeremeta F, Retailleau P, He J, Gallard JF, Pallier A, Bonnet CS, Petoud S, Durand P, Tóth É. Lanthanide-Based Probes for Imaging Detection of Enzyme Activities by NIR Luminescence, T1- and ParaCEST MRI. Angew Chem Int Ed Engl 2024; 63:e202317728. [PMID: 38376889 DOI: 10.1002/anie.202317728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 02/21/2024]
Abstract
Applying a single molecular probe to monitor enzymatic activities in multiple, complementary imaging modalities is highly desirable to ascertain detection and to avoid the complexity associated with the use of agents of different chemical entities. We demonstrate here the versatility of lanthanide (Ln3+) complexes with respect to their optical and magnetic properties and their potential for enzymatic detection in NIR luminescence, CEST and T1 MR imaging, controlled by the nature of the Ln3+ ion, while using a unique chelator. Based on X-ray structural, photophysical, and solution NMR investigations of a family of Ln3+ DO3A-pyridine model complexes, we could rationalize the luminescence (Eu3+, Yb3+), CEST (Yb3+) and relaxation (Gd3+) properties and their variations between carbamate and amine derivatives. This allowed the design ofL n L G a l 5 ${{{\bf L n L}}_{{\bf G a l}}^{5}}$ probes which undergo enzyme-mediated changes detectable in NIR luminescence, CEST and T1-weighted MRI, respectively governed by variations in their absorption energy, in their exchanging proton pool and in their size, thus relaxation efficacy. We demonstrate that these properties can be exploited for the visualization of β-galactosidase activity in phantom samples by different imaging modalities: NIR optical imaging, CEST and T1-weighted MRI.
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Affiliation(s)
- Rémy Jouclas
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Sophie Laine
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071, Orléans, France
| | - Svetlana V Eliseeva
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071, Orléans, France
| | - Jérémie Mandel
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Frédéric Szeremeta
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071, Orléans, France
| | - Pascal Retailleau
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Jiefang He
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Jean-François Gallard
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Agnès Pallier
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071, Orléans, France
| | - Célia S Bonnet
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071, Orléans, France
| | - Stéphane Petoud
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071, Orléans, France
| | - Philippe Durand
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071, Orléans, France
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Saad HE, El-Reash GMA, Gaber M, Hashem MA, El-Reash YGA, Elamin NY, Elamin MR, El-Sayed YS. A novel isatin Schiff based cerium complex: synthesis, characterization, antimicrobial activity and molecular docking studies. BMC Genomics 2024; 25:162. [PMID: 38331729 PMCID: PMC10854109 DOI: 10.1186/s12864-024-10037-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 01/21/2024] [Indexed: 02/10/2024] Open
Abstract
In this work, a novel isatin-Schiff base L2 had been synthesized through a simple reaction between isatin and 2-amino-5-methylthio-1,3,4-thiadiazole. The produced Schiff base L2 was then subjected to a hydrothermal reaction with cerium chloride to produce the cerium (III)-Schiff base complex C2. Several spectroscopic methods, including mass spectra, FT-IR, elemental analysis, UV-vis, 13C-NMR, 1H-NMR, Thermogravimetric Analysis, HR-TEM, and FE-SEM/EDX, were used to completely characterize the produced L2 and C2. A computer simulation was performed using the MOE software program to find out the probable biological resistance of studied compounds against the proteins in some types of bacteria or fungi. To investigate the interaction between the ligand and its complex, we conducted molecular docking simulations using the molecular operating environment (MOE). The docking simulation findings revealed that the complex displayed greater efficacy and demonstrated a stronger affinity for Avr2 effector protein from the fungal plant pathogen Fusarium oxysporum (code 5OD4) than the original ligand. The antibacterial activity of the ligand and its Ce3+ complex were applied in vitro tests against different microorganism. The study showed that the complex was found to be more effective than the ligand.
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Affiliation(s)
- Heba E Saad
- Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Gaber M Abu El-Reash
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt
| | - Mohamed Gaber
- Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Mohamed A Hashem
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt.
| | - Yasmeen G Abou El-Reash
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box, 90950, 11623, Riyadh, Saudi Arabia
| | - Nuha Y Elamin
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box, 90950, 11623, Riyadh, Saudi Arabia
- Department of Chemistry, Sudan University of Science and Technology, P.O. Box 407, Khartoum, 11111, Sudan
| | - Mohamed R Elamin
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box, 90950, 11623, Riyadh, Saudi Arabia
| | - Yusif S El-Sayed
- Department of Chemistry, Faculty of Science, Tanta University, Tanta, 31527, Egypt
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3
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Zhu N, Wang X, Wang X, Zeng Y, Yu Y, Yi Q, Wu Y. Accurate and noninvasive diagnosis of epithelial cancers through AND gate photoluminescence on tumor-derived small extracellular vesicles. J Mater Chem B 2023; 11:10288-10296. [PMID: 37886894 DOI: 10.1039/d3tb01675g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
Noninvasive detection of small extracellular vesicles (sEVs) has become one of the most promising liquid biopsy methodologies for effective and timely cancer diagnosis and prognostic monitoring. Currently, accurate and sensitive detection of tumor-derived sEVs is compromised by their heterogeneous nature, and the tissue origin and parent cell cycle change may significantly affect the tumor-associated information (e.g., phenotypic proteins) of sEVs. Accordingly, many of the single-marker dependent detections on sEVs may not provide comprehensive information about the tumor, and their reliability and clinical applicability cannot be guaranteed. Herein, a strategy for constructing AND gate photoluminescence on tumor-derived sEVs is proposed. Briefly, only after co-recognition of the two epithelial phenotypic proteins (EpCAM and MUC1) on tumor-derived sEVs simultaneously, can our designed lanthanide luminescence probe precursors then assemble to form the AND gate for photoluminescence detection. Consequently, the generated AND gate photoluminescence provided time-resolved luminescence for a wide cancerous sEV linear detection range of 6.0 × 104-6.0 × 109 particles per mL, with a calculated detection limitation of 1.42 × 102 particles per mL. Furthermore, the AND gate photoluminescence can significantly distinguish epithelial cancer patients from healthy controls, displaying its great potential for accurate and noninvasive cancer diagnosis.
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Affiliation(s)
- Nanhang Zhu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
| | - Xuekang Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
| | - Xingyou Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
| | - Yating Zeng
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
| | - Yue Yu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
| | - Qiangying Yi
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
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Baskaran B, Gill TM, Furst AL. An Improved Spectrophotometric Method for Toluene-4-Monooxygenase Activity. Chemistry 2023; 29:e202203322. [PMID: 36593585 PMCID: PMC10423644 DOI: 10.1002/chem.202203322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/28/2022] [Accepted: 12/28/2022] [Indexed: 01/04/2023]
Abstract
Monooxygenases, an important class of enzymes, have been the subject of enzyme engineering due to their high activity and versatile substrate scope. Reactions performed by these biocatalysts have long been monitored by a colorimetric method involving the coupling of a dye precursor to naphthalene hydroxylation products generated by the enzyme. Despite the popularity of this method, we found the dye product to be unstable, preventing quantitative readout. By incorporating an extraction step to solubilize the dye produced, we have improved this assay to the point where quantitation of enzyme activity is possible. Further, by incorporating spectral deconvolution, we have, for the first time, enabled independent quantification of the two possible regioisomeric products: 1-naphthol and 2-naphthol. Previously, such analysis was only possible with chromatographic separation, increasing the cost and complexity of analysis. The efficacy of our improved workflow was evaluated by monitoring the activity of a toluene-4-monooxygenase enzyme from Pseudomonas mendocina KR-1. Our colorimetric regioisomer quantification was found to be consistent with chromatographic analysis by HPLC. The development and validation of a quantitative colorimetric assay for monooxygenase activity that enables regioisomeric distinction and quantification represents a significant advance in analytical methods to monitor enzyme activity. By maintaining facile, low-cost, high-throughput readout while incorporating quantification, this assay represents an important alternative to more expensive chromatographic quantification techniques.
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Affiliation(s)
- Barathkumar Baskaran
- Deparment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Thomas M. Gill
- Deparment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Ariel L. Furst
- Deparment of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
- Center for Environmental Health Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139
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Choi JH, Fremy G, Charnay T, Fayad N, Pécaut J, Erbek S, Hildebrandt N, Martel-Frachet V, Grichine A, Sénèque O. Luminescent Peptide/Lanthanide(III) Complex Conjugates with Push–Pull Antennas: Application to One- and Two-Photon Microscopy Imaging. Inorg Chem 2022; 61:20674-20689. [DOI: 10.1021/acs.inorgchem.2c03646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ji-Hyung Choi
- Université Grenoble Alpes, CNRS, CEA, IRIG, LCBM (UMR 5249), Grenoble F-38000, France
| | - Guillaume Fremy
- Université Grenoble Alpes, CNRS, CEA, IRIG, LCBM (UMR 5249), Grenoble F-38000, France
- Université Grenoble Alpes, CNRS, DCM (UMR 5250), Grenoble F-38000, France
| | - Thibault Charnay
- Université Grenoble Alpes, CNRS, CEA, IRIG, LCBM (UMR 5249), Grenoble F-38000, France
| | - Nour Fayad
- Laboratoire COBRA (Chimie Organique, Bioorganique, Réactivite et Analyse), UMR 6014, CNRS, Université de Rouen Normandie, INSA, Mont-Saint-Aignan Cedex 76821, France
| | - Jacques Pécaut
- Université Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, Grenoble F-38000, France
| | - Sule Erbek
- Institute for Advanced Biosciences, Université Grenoble Alpes, INSERM U1209, CNRS UMR 5309, Grenoble F-38000, France
- EPHE, PSL Research University, 4-14 Rue Ferrus, Paris 75014, France
| | - Niko Hildebrandt
- Laboratoire COBRA (Chimie Organique, Bioorganique, Réactivite et Analyse), UMR 6014, CNRS, Université de Rouen Normandie, INSA, Mont-Saint-Aignan Cedex 76821, France
| | - Véronique Martel-Frachet
- Institute for Advanced Biosciences, Université Grenoble Alpes, INSERM U1209, CNRS UMR 5309, Grenoble F-38000, France
- EPHE, PSL Research University, 4-14 Rue Ferrus, Paris 75014, France
| | - Alexei Grichine
- Institute for Advanced Biosciences, Université Grenoble Alpes, INSERM U1209, CNRS UMR 5309, Grenoble F-38000, France
| | - Olivier Sénèque
- Université Grenoble Alpes, CNRS, CEA, IRIG, LCBM (UMR 5249), Grenoble F-38000, France
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Cai TT, Tian Y, Huang P, Wu FY. Dual-product synergistically enhanced ratiometric fluorescence assay for alkaline phosphatase activity using core-shell lanthanide-based nanoprobe. Anal Chim Acta 2022; 1235:340550. [DOI: 10.1016/j.aca.2022.340550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/23/2022] [Accepted: 10/22/2022] [Indexed: 11/01/2022]
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Wang J, Jin Y, Li M, Liu S, Lo KKW, Zhao Q. Time-Resolved Luminescent Sensing and Imaging for Enzyme Catalytic Activity Based on Responsive Probes. Chem Asian J 2022; 17:e202200429. [PMID: 35819359 DOI: 10.1002/asia.202200429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/11/2022] [Indexed: 11/07/2022]
Abstract
Enzymes, as a kind of biomacromolecules, play an important role in many physiological processes and relate directly to various diseases. Developing an efficient detection method for enzyme activity is important to achieve early diagnosis of enzyme-relevant diseases and high throughput screening of potential enzyme-relevant drugs. Time-resolved luminescence assay provide a high accuracy and signal-to-noise ratios detection methods for enzyme activity, which has been widely used in high throughput screening of enzyme-relevant drugs and diagnosis of enzyme-relevant diseases. Inspired by these advantages, various responsive probes based on metal complexes and metal-free organic compounds have been developed for time-resolved bioimaging and biosensing of enzyme activity owing to their long luminescence lifetimes, high quantum yields and photostability. In this review, we comprehensively reviewed metal complex- and metal-free organic compound-based responsive probes applied to detect enzyme activity through time-resolved imaging, including their design strategies and sensing principles. Current challenges and future prospects in this rapidly growing field are also discussed.
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Affiliation(s)
- Jiawei Wang
- Nanjing University of Posts and Telecommunications, Institute of Advanced Materials, 9 Wenyuan Road, 210023, Nanjing, CHINA
| | - Yibiao Jin
- Nanjing University of Posts and Telecommunications, Institute of Advanced Materials, 9 Wenyuan Road, 210023, Nanjing, CHINA
| | - Mingdang Li
- Nanjing University of Posts and Telecommunications, Institute of Advanced Materials, 9 Wenyuan Road, 210023, Nanjing, CHINA
| | - Shujuan Liu
- Nanjing University of Posts and Telecommunications, Institute of Advanced Materials, 9 Wenyuan Road, 210023, Nanjing, CHINA
| | - Kenneth Kam-Wing Lo
- City University of Hong Kong, Department of Chemistry, Tat Chee Avenue, Hong Kong, CHINA
| | - Qiang Zhao
- Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, 210023, Nanjing, CHINA
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Chi S, Xu Y, Xie B, Gao T. Luminescence of Zn-Yb dinuclear Schiff base complex: Enhanced NIR emission by modification with larger conjugated light-harvesting moieties. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Martinon TLM, Pierre VC. Luminescent Lanthanide Probes for Inorganic and Organic Phosphates. Chem Asian J 2022; 17:e202200495. [PMID: 35750633 PMCID: PMC9388549 DOI: 10.1002/asia.202200495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/19/2022] [Indexed: 11/09/2022]
Abstract
Inorganic and organic phosphates-including orthophosphate, nucleotides, and DNA-are some of the most fundamental anions in cellular biology, regulating numerous processes of both medical and environmental significance. The characteristic long lifetimes of emitting lanthanides, including the brighter europium(III) and terbium(III), make them ideally suited for the development of molecular probes for the detection of phosphates directly in complex aqueous media. Moreover, given their high oxophilicity and the exquisite sensitivity of their quantum yields to their hydration number, those luminescent lanthanides are perfect for the detection of phosphates. Herein we discuss the principles that have guided the recent developments of molecular probes selective for inorganic or organic phosphates and how these lanthanide complexes facilitate the study of numerous biological processes.
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Affiliation(s)
- Thibaut L M Martinon
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
| | - Valérie C Pierre
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
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Hu J, Li G. Recent Progress in Fluorescent Chemosensors for Protein Kinases. Chem Asian J 2022; 17:e202200182. [PMID: 35486328 DOI: 10.1002/asia.202200182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/21/2022] [Indexed: 11/10/2022]
Abstract
Protein kinases are involved in almost all biological activities. The activities of different kinases reflect the normal or abnormal status of the human body. Therefore, detecting the activities of different kinases is important for disease diagnosis and drug discovery. Fluorescent probes offer opportunities for studying kinase behaviors at different times and spatial locations. In this review, we summarize different kinds of fluorescent chemosensors that have been used to detect the activities of many different kinases.
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Affiliation(s)
- Jun Hu
- Fujian Agriculture and Forestry University, College of Life Sciences, No.15 Shangxiadian Road, Cangshan District, 350002, Fuzhou, CHINA
| | - Gao Li
- Minjiang University, College of Material and Chemical Engineering, CHINA
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Mandal P, Kretzschmar J, Drobot B. Not just a background: pH buffers do interact with lanthanide ions-a Europium(III) case study. J Biol Inorg Chem 2022; 27:249-260. [PMID: 35150337 PMCID: PMC8907096 DOI: 10.1007/s00775-022-01930-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/14/2022] [Indexed: 12/23/2022]
Abstract
The interaction between Eu(III) ion and different pH buffers, popular in biology and biochemistry, viz. HEPES, PIPES, MES, MOPS, and TRIS, has been studied by solution nuclear magnetic resonance spectroscopy (NMR) and time-resolved laser-induced fluorescence spectroscopy (TRLFS) techniques. The Good’s buffers reveal non-negligible interaction with Eu(III) as determined from their complex stability constants, where the sites of interaction are the morpholine and piperazine nitrogen atoms, respectively. In contrast, TRIS buffer shows practically no affinity towards Eu(III). Therefore, when investigating lanthanides, TRIS buffer should be preferred over Good’s buffers.
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Affiliation(s)
- Poulami Mandal
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328, Dresden, Germany
| | - Jerome Kretzschmar
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328, Dresden, Germany
| | - Björn Drobot
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328, Dresden, Germany.
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12
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Leygue N, Picard C, Faure P, Bourrier E, Lamarque L, Zwier JM, Galaup C. Design of novel tripyridinophane-based Eu(III) complexes as efficient luminescent labels for bioassay applications. Org Biomol Chem 2021; 20:182-195. [PMID: 34878481 DOI: 10.1039/d1ob02092g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this work, the development of highly luminescent europium(III) complexes in water solution is reported, including their syntheses, analyses of their photophysical properties and applications in bioassays. Three Eu(III) complexes are derived from new ligands based on a tripyridinophane platform. There are four distinct sections in the structure of these ligands: an 18-membered polyaminocarboxylic macrocycle to bind efficiently lanthanide ions in aqueous solutions, three chromophoric subunits (4-(phenylethynyl)pyridine moieties) to effectively sensitize the emission of the metal, two peripheral moieties to solubilise the complex in aqueous media (sulfonate, sulfobetaine or glucose groups) and a free NH2 group available for grafting or bioconjugation. In our synthetic procedure, a pivotal macrocyclic platform is obtained with a high yield in the crucial macrocyclization step due to a metal template ion effect (74% yield). In Tris aqueous buffer (pH 7.4), the Eu(III) complexes show a maximum excitation wavelength at 320 nm, a suitable overall quantum yield (14%), a relatively long lifetime (0.80 ms) and a one-photon brightness in the range of 10 000 M-1 cm-1. Importantly, these photophysical properties are retained at dilute concentrations, even in the presence of a very large excess of potentially competing species, such as EDTA or Mg2+ ions. Furthermore, we report the bioconjugation of a Eu(III) complex labelled by an N-hydroxysuccinimide ester reactive group with an antibody (anti-glutathione-S-transferase) and the successful application of the corresponding antibody conjugate in the detection of GST-biotin in a fluoroimmunoassay. These new complexes provide a solution for high sensitivity in Homogeneous Time-Resolved Fluorescence (HTRF®) bioassays.
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Affiliation(s)
- Nadine Leygue
- SPCMIB, UMR5068 CNRS-Université Paul Sabatier-Toulouse III, 118 Route de Narbonne, F-31062 Toulouse, France.
| | - Claude Picard
- SPCMIB, UMR5068 CNRS-Université Paul Sabatier-Toulouse III, 118 Route de Narbonne, F-31062 Toulouse, France.
| | - Pamela Faure
- Cisbio Bioassays, BP 84175, 30200 Codolet, France.
| | | | | | | | - Chantal Galaup
- SPCMIB, UMR5068 CNRS-Université Paul Sabatier-Toulouse III, 118 Route de Narbonne, F-31062 Toulouse, France.
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Evaluation of the excited state dynamics, photophysical properties, and the influence of donor substitution in a donor-[Formula: see text]-acceptor system. J Mol Model 2021; 27:284. [PMID: 34515856 DOI: 10.1007/s00894-021-04875-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 08/12/2021] [Indexed: 10/20/2022]
Abstract
There have been numerous attempts for the theoretical design of a better donor-[Formula: see text]-acceptor structural framework with improved absorption and emission properties. However, for effective dye designing, it is necessary to understand the electronic and photophysical properties of the dye systems. In this work, we report a detailed density functional theory (DFT) and time-dependent density functional theory (TD-DFT) investigations of the excited state characteristics and the influence of various groups (-HCO, =CH2, (-CH3)2, (HCO)2, and (-OCH3)2) attached to the donor group (-NH2) in a p-nitroaniline D-[Formula: see text]-A system which are symbolized respectively as p-nitroaniline (A), N,N-dimethylnitroaniline (A2), N,N-dicarbonylnitroaniline (A3), N-methylenenitroaniline (A4), and N,N-dimethoxynitroaniline (A5). The first principles DFT and TD-DFT calculations from the ground state (S0) to the first five excited states: (S0→S1), (S0→S2), (S0→S3), (S0→S4), and (S0→S5) were utilized to explore the reactivity of D-[Formula: see text]-A system using the conceptual DFT approach, characterization of electron excitation using the hole-electron analysis, visual study of the various real space functions in the hole-electron framework, density of states (DOS), measurement of charge transfer (CT) length of electron excitation ([Formula: see text]), measurement of the overlapping degrees of hole and electron of electron excitation ([Formula: see text]), interfragment charge transfer (IFCT) during electron excitation, and the second-order perturbation energy analysis from the natural bond orbitals (NBO) computation. Results of the excitation studies show that all the studied compounds exhibited an n→[Formula: see text]* localized type for first excitations (S0→S1) on -NO2 group in A, A2, A4, and A5 and -NCl2 in A3. [Formula: see text]→[Formula: see text]* charge transfer excitations were confirmed for S0→S2/S4/S5 in A and A2, S0→S3/S4/S5 in A3 and A5, and S0→S4/S5 in A4. The NBO second-order perturbation energy analysis suggest that the most significant hyperconjugative interactions were [Formula: see text] (54.43kcal/mol), [Formula: see text] (40.82kcal/mol), [Formula: see text] (11.67kcal/mol), [Formula: see text] (29.52kcal/mol), [Formula: see text] (11.55kcal/mol), [Formula: see text] (23.40kcal/mol), and [Formula: see text] (24.88kcal/mol) [Formula: see text](24.64kcal/mol), which respectively corresponds to the A, A2, A3, A4, and A5 D-[Formula: see text]-A systems under investigation, and these strong interactions stabilize the systems.
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14
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Herath ID, Breen C, Hewitt SH, Berki TR, Kassir AF, Dodson C, Judd M, Jabar S, Cox N, Otting G, Butler SJ. A Chiral Lanthanide Tag for Stable and Rigid Attachment to Single Cysteine Residues in Proteins for NMR, EPR and Time-Resolved Luminescence Studies. Chemistry 2021; 27:13009-13023. [PMID: 34152643 PMCID: PMC8518945 DOI: 10.1002/chem.202101143] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Indexed: 12/12/2022]
Abstract
A lanthanide-binding tag site-specifically attached to a protein presents a tool to probe the protein by multiple spectroscopic techniques, including nuclear magnetic resonance, electron paramagnetic resonance and time-resolved luminescence spectroscopy. Here a new stable chiral LnIII tag, referred to as C12, is presented for spontaneous and quantitative reaction with a cysteine residue to generate a stable thioether bond. The synthetic protocol of the tag is relatively straightforward, and the tag is stable for storage and shipping. It displays greatly enhanced reactivity towards selenocysteine, opening a route towards selective tagging of selenocysteine in proteins containing cysteine residues. Loaded with TbIII or TmIII ions, the C12 tag readily generates pseudocontact shifts (PCS) in protein NMR spectra. It produces a relatively rigid tether between lanthanide and protein, which is beneficial for interpretation of the PCSs by single magnetic susceptibility anisotropy tensors, and it is suitable for measuring distance distributions in double electron-electron resonance experiments. Upon reaction with cysteine or other thiol compounds, the TbIII complex exhibits a 100-fold enhancement in luminescence quantum yield, affording a highly sensitive turn-on luminescence probe for time-resolved FRET assays and enzyme reaction monitoring.
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Affiliation(s)
- Iresha D. Herath
- Research School of ChemistryThe Australian National UniversityCanberraACT 2605Australia
| | - Colum Breen
- Department of ChemistryLoughborough UniversityEpinal WayLoughboroughLE11 3TUUK
| | - Sarah H. Hewitt
- Department of ChemistryLoughborough UniversityEpinal WayLoughboroughLE11 3TUUK
| | - Thomas R. Berki
- Department of ChemistryLoughborough UniversityEpinal WayLoughboroughLE11 3TUUK
| | - Ahmad F. Kassir
- Department of ChemistryLoughborough UniversityEpinal WayLoughboroughLE11 3TUUK
| | - Charlotte Dodson
- Department of Pharmacy & PharmacologyUniversity of Bath Claverton DownBathBA2 7AYUK
| | - Martyna Judd
- Research School of ChemistryThe Australian National UniversityCanberraACT 2605Australia
| | - Shereen Jabar
- Research School of ChemistryThe Australian National UniversityCanberraACT 2605Australia
| | - Nicholas Cox
- Research School of ChemistryThe Australian National UniversityCanberraACT 2605Australia
| | - Gottfried Otting
- Research School of ChemistryThe Australian National UniversityCanberraACT 2605Australia
| | - Stephen J. Butler
- Department of ChemistryLoughborough UniversityEpinal WayLoughboroughLE11 3TUUK
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15
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Ma DL, Wu C, Liu H, Wu KJ, Leung CH. Luminescence approaches for the rapid detection of disease-related receptor proteins using transition metal-based probes. J Mater Chem B 2021; 8:3249-3260. [PMID: 31647090 DOI: 10.1039/c9tb01889a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Protein biomarkers, particularly abnormally expressed receptor proteins, have been proved to be one of the crucial biomarkers for the rapid assessment, diagnosis, prognosis and prediction of specific human diseases. Transition metal based strategies in particular possess delightful strengths in the in-field and real-time visualization of receptor proteins owing to their unique photophysical properties. In this review, we highlight recent advances in the development of detection methods for receptor protein biomarkers using transition metal based approaches, particularly those employing transition metal complexes. We first discuss the strengths and weaknesses of various strategies used for protein biomarker monitoring in live cells. We then describe the principles of the various sensing platforms and their application for receptor protein detection. Finally, we discuss the challenges and future inspirations in this specific field.
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Affiliation(s)
- Dik-Lung Ma
- Department of Chemistry, Faculty of Science, Hong Kong Baptist University, Kowloon, Hong Kong SAR 999077, China.
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16
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Bodman SE, Butler SJ. Advances in anion binding and sensing using luminescent lanthanide complexes. Chem Sci 2021; 12:2716-2734. [PMID: 34164038 PMCID: PMC8179419 DOI: 10.1039/d0sc05419d] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/22/2020] [Indexed: 12/11/2022] Open
Abstract
Luminescent lanthanide complexes have been actively studied as selective anion receptors for the past two decades. Ln(iii) complexes, particularly of europium(iii) and terbium(iii), offer unique photophysical properties that are very valuable for anion sensing in biological media, including long luminescence lifetimes (milliseconds) that enable time-gating methods to eliminate background autofluorescence from biomolecules, and line-like emission spectra that allow ratiometric measurements. By careful design of the organic ligand, stable Ln(iii) complexes can be devised for rapid and reversible anion binding, providing a luminescence response that is fast and sensitive, offering the high spatial resolution required for biological imaging applications. This review focuses on recent progress in the development of Ln(iii) receptors that exhibit sufficiently high anion selectivity to be utilised in biological or environmental sensing applications. We evaluate the mechanisms of anion binding and sensing, and the strategies employed to tune anion affinity and selectivity, through variations in the structure and geometry of the ligand. We highlight examples of luminescent Ln(iii) receptors that have been utilised to detect and quantify specific anions in biological media (e.g. human serum), monitor enzyme reactions in real-time, and visualise target anions with high sensitivity in living cells.
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Affiliation(s)
- Samantha E Bodman
- Department of Chemistry, Loughborough University Epinal Way, Loughborough LE11 3TU UK
| | - Stephen J Butler
- Department of Chemistry, Loughborough University Epinal Way, Loughborough LE11 3TU UK
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17
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Aquino LEDN, Barbosa GA, Ramos JDL, O K Giese S, Santana FS, Hughes DL, Nunes GG, Fu L, Fang M, Poneti G, Carneiro Neto AN, Moura RT, Ferreira RAS, Carlos LD, Macedo AG, Soares JF. Seven-Coordinate Tb 3+ Complexes with 90% Quantum Yields: High-Performance Examples of Combined Singlet- and Triplet-to-Tb 3+ Energy-Transfer Pathways. Inorg Chem 2021; 60:892-907. [PMID: 33393287 DOI: 10.1021/acs.inorgchem.0c03020] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Seven-coordinate, pentagonal-bipyramidal (PBP) complexes [Ln(bbpen)Cl] and [Ln(bbppn)Cl], in which Ln = Tb3+ (products I and II), Eu3+ (III and IV), and Gd3+ (V and VI), with bbpen2- = N,N'-bis(2-oxidobenzyl)-N,N'-bis(pyridin-2-ylmethyl)ethylenediamine and bbppn2- = N,N'-bis(2-oxidobenzyl)-N,N'-bis(pyridin-2-ylmethyl)-1,2-propanediamine, were synthesized and characterized by single-crystal X-ray diffraction analysis, alternating-current magnetic susceptibility measurements, and photoluminescence (steady-state and time-resolved) spectroscopy. Under a static magnetic field of 0.1 T, the Tb3+ complexes I and II revealed single-ion-magnet behavior. Also, upon excitation at 320 nm at 300 K, I and II presented very high absolute emission quantum yields (0.90 ± 0.09 and 0.92 ± 0.09, respectively), while the corresponding Eu3+ complexes III and IV showed no photoluminescence. Detailed theoretical calculations on the intramolecular energy-transfer rates for the Tb3+ products indicated that both singlet and triplet ligand excited states contribute efficiently to the overall emission performance. The expressive quantum yields, QLnL, measured for I and II in the solid state and a dichloromethane solution depend on the excitation wavelength, being higher at 320 nm. Such a dependence was rationalized by computing the intersystem crossing rates (WISC) and singlet fluorescence lifetimes (τS) related to the population dynamics of the S1 and T1 levels. Thin films of product II showed high air stability and photostability upon continuous UV illumination, which allowed their use as downshifting layers in a green light-emitting device (LED). The prototypes presented a luminous efficacy comparable with those found in commercial LED coatings, without requiring encapsulation or dispersion of II in host matrixes. The results indicate that the PBP environment determined by the ethylenediamine (en)-based ligands investigated in this work favors the outstanding optical properties in Tb3+ complexes. This work presents a comprehensive structural, chemical, and spectroscopic characterization of two Tb3+ complexes of mixed-donor, en-based ligands, focusing on their outstanding optical properties. They constitute good molecular examples in which both triplet and singlet excited states provide energy to the Tb3+ ion and lead to high values of QLnL.
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Affiliation(s)
| | - Guilherme A Barbosa
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Jaqueline de L Ramos
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Siddhartha O K Giese
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Francielli S Santana
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - David L Hughes
- School of Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K
| | - Giovana G Nunes
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
| | - Lianshe Fu
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Ming Fang
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Giordano Poneti
- Institute of Chemistry, Federal University of Rio de Janeiro, 21941-909 - Rio de Janeiro-RJ, Brazil
| | - Albano N Carneiro Neto
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Renaldo T Moura
- Department of Chemistry and Physics, Federal University of Paraíba, 58397-000 - Areia-PB, Brazil
| | - Rute A S Ferreira
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Luís D Carlos
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal
| | - Andreia G Macedo
- Phantom-g, CICECO - Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 - Aveiro, Portugal.,Department of Physics, Federal University of Technology, 80230-901 - Curitiba, PR, Brazil
| | - Jaísa F Soares
- Department of Chemistry, Federal University of Paraná, 81530-900 - Curitiba-PR, Brazil
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18
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Fremy G, Raibaut L, Cepeda C, Sanson M, Boujut M, Sénèque O. A novel DOTA-like building block with a picolinate arm for the synthesis of lanthanide complex-peptide conjugates with improved luminescence properties. J Inorg Biochem 2020; 213:111257. [DOI: 10.1016/j.jinorgbio.2020.111257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 12/28/2022]
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19
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Mondragón M, Desirena H, Moreno‐Ruiz LA, Bello‐Pérez LA. Luminescent Europium Complex‐Grafted Octenyl Succinylated Starch Nanoparticles. STARCH-STARKE 2020. [DOI: 10.1002/star.201900290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Margarita Mondragón
- Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional (CIIDIR)‐Unidad Oaxaca del Instituto Politécnico Nacional Hornos 1003 Sta. Cruz Xoxocotlán 71230 Santa Cruz Xoxocotlán Oaxaca Mexico
| | - Haggeo Desirena
- Centro de Investigaciones en Óptica (CIO) Lomas del Bosque 115 Lomas del Campestre León Guanajuato 37150 Mexico
| | - Luis Alberto Moreno‐Ruiz
- Centro de Nanociencias y Micro y Nanotecnologías (CNMN) del Instituto Politécnico Nacional Av. Luis Enrique Erro s/n Nueva Industrial Vallejo Cd. De México 07738 Mexico
| | - Luis Arturo Bello‐Pérez
- Centro de Desarrollo de Productos Bióticos (CEPROBI) del Instituto Politécnico Nacional Carr. Yautepec‐Jojutla km. 6 Calle CEPROBI No.8 Col. San Isidro Yautepec Morelos 62731 Mexico
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20
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Smrčka F, Lubal P. Luminescent Sensor Based on Ln(III) Ternary Complexes for NAD(P)H Detection. Molecules 2020; 25:E4164. [PMID: 32932963 PMCID: PMC7571129 DOI: 10.3390/molecules25184164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/05/2020] [Accepted: 09/07/2020] [Indexed: 11/16/2022] Open
Abstract
Ln(III) complexes of macrocyclic ligands are used in medicinal chemistry, for example as contrast agents in MRI or radiopharmaceutical compounds, and in diagnostics using fluorescence imaging. This paper is devoted to a spectroscopic study of Ln(III) ternary complexes consisting of macrocyclic heptadentate DO3A and bidentate 3-isoquinolinate (IQCA) ligands. IQCA serves as an efficient antenna ligand, leading to a higher quantum yield and Stokes shift (250-350 nm for Eu, Tb, Sm, Dy in VIS region, 550-650 nm for Yb, Nd in NIR region). The shielding-quenching effect of NAD(P)H on the luminescence of the Ln(III) ternary complexes was investigated in detail and this phenomenon was utilized for the analytical determination of this compound. This general approach was verified through an enzymatic reaction during which the course of ethanol transformation catalyzed by alcohol-dehydrogenase (ADH) was followed by luminescence spectroscopy. This method can be utilized for selective and sensitive determination of ethanol concentration and/or ADH enzyme activity. This new analytical method can also be used for other enzyme systems coupled with NAD(P)H/NAD(P)+ redox pairs.
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Affiliation(s)
| | - Přemysl Lubal
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic;
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21
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Hennig A, Nau WM. Interaction of Cucurbit[7]uril With Protease Substrates: Application to Nanosecond Time-Resolved Fluorescence Assays. Front Chem 2020; 8:806. [PMID: 33134264 PMCID: PMC7511663 DOI: 10.3389/fchem.2020.00806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 07/31/2020] [Indexed: 01/04/2023] Open
Abstract
We report the use of the macrocyclic host cucurbit[7]uril (CB7) as a supramolecular additive in nanosecond time-resolved fluorescence (Nano-TRF) assays for proteases to enhance the discrimination of substrates and products and, thereby, the sensitivity. A peptide substrate was labeled with 2,3-diazabicyclo[2.2.2]oct-2-ene (DBO) as a long-lived (>300 ns) fluorescent probe and 3-nitrotyrosine was established as a non-fluorescent fluorescence resonance energy transfer (FRET) acceptor that acts as a “dark quencher.” The substrate was cleaved by the model proteases trypsin and chymotrypsin and the effects of the addition of CB7 to the enzyme assay mixture were investigated in detail using UV/VIS absorption as well as steady-state and time-resolved fluorescence spectroscopy. This also allowed us to identify the DBO and nitrotyrosine residues as preferential binding sites for CB7 and suggested a hairpin conformation of the peptide, in which the guanidinium side chain of an arginine residue is additionally bound to a vacant ureido rim of one of the CB7 hosts.
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Affiliation(s)
- Andreas Hennig
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH, Bremen, Germany.,Institute of Chemistry of New Materials, School of Biology/Chemistry, Universität Osnabrück, Osnabrück, Germany.,Center of Cellular Nanoanalytics (CellNanOs), Universität Osnabrück, Osnabrück, Germany
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen gGmbH, Bremen, Germany
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22
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Gabr MT, Balupuri A, Kang NS. High-Throughput Platform for Real-Time Monitoring of ATP-Generating Enzymes in Living Cells Based on a Lanthanide Probe. ACS Sens 2020; 5:1872-1876. [PMID: 32610895 DOI: 10.1021/acssensors.0c00897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Remarkable variation between cell-free and cellular measurements of enzyme activity triggered the unmet need to develop tools for monitoring enzyme activity in living cells. Such tools will advance our understanding of the biological functions of enzymes and their potential impact on drug discovery. We report in this study a universal assay for monitoring ATP-generating enzymes in living cells using a self-assembled Tb3+ complex probe. Modulation of the rheological properties of cell culture media enabled shifting the lifetime of the Tb3+ complex in the presence of ATP from micro-to-millisecond range. Based on the response of the Tb3+ complex to ATP, cellular assays for 5 ATP-generating enzymes were developed. Remarkably, assessment of the activity of these enzymes in living cells is made possible for the first time. The pyruvate kinase M2 (PKM2) assay has been optimized for high-throughput screening (HTS) and further implemented in the identification of novel scaffolds as PKM2 inhibitors.
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Affiliation(s)
- Moustafa T. Gabr
- Department of Radiology, Stanford University, Stanford, California 94305, United States
| | - Anand Balupuri
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Nam Sook Kang
- Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon 305-764, Republic of Korea
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23
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Brennecke B, Wang Q, Zhang Q, Hu H, Nazaré M. Eine aktivierbare Lanthanoid‐Lumineszenzsonde für die zeitgesteuerte Detektion von Nitroreduktase in lebenden Bakterien. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Benjamin Brennecke
- Medizinische Chemie Leibniz-Forschungsinstitut für Molekulare Pharmakologie 13125 Berlin Deutschland
| | - Qinghua Wang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences Beijing 100050 China
| | - Qingyang Zhang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences Beijing 100050 China
| | - Hai‐Yu Hu
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences Beijing 100050 China
| | - Marc Nazaré
- Medizinische Chemie Leibniz-Forschungsinstitut für Molekulare Pharmakologie 13125 Berlin Deutschland
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24
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Urmey AR, Zondlo NJ. Cysteine oxidation to the sulfinic acid induces oxoform-specific lanthanide binding and fluorescence in a designed peptide. Free Radic Biol Med 2020; 152:166-174. [PMID: 32097680 DOI: 10.1016/j.freeradbiomed.2020.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 01/30/2020] [Accepted: 02/19/2020] [Indexed: 10/24/2022]
Abstract
Cysteine sulfinic acid (Cys-SO2-) is a protein post-translational modification that is formed reversibly under oxidative conditions. A short, encodable peptide was developed whose metal binding and terbium luminescence are dependent on cysteine (Cys) oxidation to the sulfinic acid. The protein design is based on the modification of a key metal-binding aspartate (Asp) in a canonical EF-Hand motif (DKDADGWISPAEAK) to Cys. In this design, Cys in the thiol oxidation state does not mimic the native Asp, and thus the peptide binds terbium(III) (Tb3+) poorly and exhibits weak terbium luminescence (fluorescence). In contrast, when Cys is oxidized to the Cys sulfinic acid oxoform, the Cys sulfinate effectively mimics Asp, resulting in a significant increase in terbium affinity and luminescence. Asp residues at positions 1, 3, and 5 of the EF-Hand motif were examined as potential sites for Cys oxidation-responsive metal binding. The peptide with Cys at residue 1 exhibited the highest Tb3+ affinity in both oxidation states. The peptide with Cys at residue 3 exhibited a 4.2-fold distinction in affinity between the oxidation states. Most significantly, the peptide with Cys at residue 5 had only modest Tb3+ affinity as the Cys thiol, but exhibited a 30-fold increase in Tb3+ affinity and an 18-fold increase in Tb3+ luminescence on Cys oxidation to the sulfinic acid. This peptide (Ac-DKDACGWISPAEAK-NH2) exhibited selective Tb3+ binding via Cys-SO2- over the thiol, S-glutathionyl, S-nitrosyl, and sulfonic acid oxoforms, indicating substantially greater Lewis basicity of the sulfinate than the sulfonate. NMR spectroscopy and quantum homology modeling indicated that the designed peptide binds metal with an overall geometry similar to that of an EF-Hand motif, with the Cys sulfinate effectively replacing Asp as a metal-binding ligand. This peptide was applied to detect Cys oxidation to the sulfinic acid by fluorescence spectroscopy, suggesting its broader application in understanding Cys sulfinic acid biology.
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Affiliation(s)
- Andrew R Urmey
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, United States
| | - Neal J Zondlo
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, United States.
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25
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Photophysical properties and energy transfer mechanism of a praseodymium compound with a two-dimensional layer. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519819900273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A hydrothermal reaction results in the formation of a novel [Pr2(2,5-PA)2(2,5-HPA)2(H2O)4] n·2 nH2O complex (2,5-H2PA = 2,5-pyridinedicarboxylic acid). The complex is structurally characterized by single-crystal X-ray diffraction and crystallizes in the space group P21 of the monoclinic system with two formula units in one cell. This praseodymium complex is characterized by a two-dimensional layered structure. A solid-state photoluminescence experiment reveals that the praseodymium complex shows an emission in the red region. The complex has Commission Internationale de I’Éclairage chromaticity coordinates of 0.5495 and 0.4492. The photoluminescence emission bands could be assigned to the characteristic emission of the 4 f electron intrashell transition of the 3 P0 → 3 H5, 1 D2 → 3 H4, 3 P0 → 3 H6, 3 P0 → 3 F2, and 3 P1 → 3 F3 of the Pr3+ ions. The energy transfer mechanism is explained by the energy level diagrams of the praseodymium ions and the 2,5-H2PA ligand. A solid-state diffuse reflectance measurement shows that the complex possesses a wide optical band gap of 3.48 eV.
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26
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Evans NH. Lanthanide-Containing Rotaxanes, Catenanes, and Knots. Chempluschem 2020; 85:783-792. [PMID: 32319722 DOI: 10.1002/cplu.202000135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/03/2020] [Indexed: 12/22/2022]
Abstract
The valuable luminescence, magnetic, and catalytic properties of lanthanide cations are beginning to be exploited in conjunction with structurally exotic mechanically interlocked molecules (MIMs) such as rotaxanes, catenanes and knots. This Minireview provides an account of this rapidly developing research area commencing with the use of lanthanides in extended MIM-containing frameworks. Then, attention turns to discrete lanthanide-containing pseudorotaxanes, followed by fully interlocked rotaxanes, catenanes and knots - where lanthanides have not only been incorporated into MIM architectures but have also been used to template formation of the interlocked structure. Particular focus is paid to examples where the lanthanide MIMs have been put to useful applications, in what is still a relatively youthful avenue of research in both lanthanide coordination chemistry and the chemistry of mechanically interlocked molecules.
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Affiliation(s)
- Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, United Kingdom
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27
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Brennecke B, Wang Q, Zhang Q, Hu HY, Nazaré M. An Activatable Lanthanide Luminescent Probe for Time-Gated Detection of Nitroreductase in Live Bacteria. Angew Chem Int Ed Engl 2020; 59:8512-8516. [PMID: 32212410 PMCID: PMC7317344 DOI: 10.1002/anie.202002391] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Indexed: 12/13/2022]
Abstract
Herein we report the development of a turn‐on lanthanide luminescent probe for time‐gated detection of nitroreductases (NTRs) in live bacteria. The probe is activated through NTR‐induced formation of the sensitizing carbostyril antenna and resulting energy transfer to the lanthanide center. This novel NTR‐responsive trigger is virtually non‐fluorescent in its inactivated form and features a large signal increase upon activation. We show that the probe is capable of selectively sensing NTR in lysates as well as in live bacteria of the ESKAPE family which are clinically highly relevant multiresistant pathogens responsible for the majority of hospital infections. The results suggest that our probe could be used to develop diagnostic tools for bacterial infections.
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Affiliation(s)
- Benjamin Brennecke
- Medicinal Chemistry, Leibniz-Forschungsinstitut für Molekulare Pharmakologie, 13125, Berlin, Germany
| | - Qinghua Wang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China
| | - Qingyang Zhang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China
| | - Hai-Yu Hu
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China
| | - Marc Nazaré
- Medicinal Chemistry, Leibniz-Forschungsinstitut für Molekulare Pharmakologie, 13125, Berlin, Germany
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28
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Zhang K, Chen TT, Feng CC, Shen YJ, Yang ZR, Zhu C. Luminescent Sm(III) complex bearing dynamic imine bonds as a multi-responsive fluorescent sensor for F - and PO 43- anions together with Zn 2+ cation in water samples. Anal Chim Acta 2020; 1118:52-62. [PMID: 32418604 DOI: 10.1016/j.aca.2020.04.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/08/2020] [Accepted: 04/13/2020] [Indexed: 12/12/2022]
Abstract
We have designed and synthesized a new luminescent mononuclear samarium (III) complex Sm-2h based on the [1 + 1] Schiff-base macrocycle H2L2h, derived from the cyclocondensation reaction between dialdehyde and diamine precursors, and its exact architecture is determined to be [Sm(HL2h) (NO3)2]. The sensing ability of complex Sm-2h is carefully evaluated for various common inorganic ions in solution. It is shown that complex Sm-2h is a multi-responsive fluorimetric sensor with high selectivity for F- and PO43- anions together with Zn2+ cation. The sensing process is rapid within 60 s for F- and PO43- ions and 300 s for Zn2+ ion. Further detailed responsive investigations suggest that its sensing behavior has excellent linear relationship between the fluorescence intensity (or absorption value) and ion concentration. The limit of detection (LOD) for sensing F-, PO43- and Zn2+ ions are as low as 2.61 μM (2.94 μM), 1.92 μM (1.64 μM) and 5.67 μM (3.53 μM), respectively, verified by fluorimetric (or colorimetric) titration experiments. ESI mass spectra prove that these efficient detections originate from the structure collapse of sensor Sm-2h because of the ion-induced imine bond breakage. Moreover, sensor Sm-2h shows excellent sensing performances for F-, PO43- and Zn2+ ions in real water samples, and we also have developed a convenient method to detect these three ions by use of the sensor impregnated test paper strips, providing rapid and distinguishable fluorimetric color changes. Therefore, the macrocyclic Sm(III) complex Sm-2h could be regarded as a valuable candidate for monitoring F-, PO43- and Zn2+ ions in practical applications.
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Affiliation(s)
- Kun Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China.
| | - Ting-Ting Chen
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Cheng-Cheng Feng
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Yin-Jing Shen
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Zhuo-Ran Yang
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
| | - Chaoying Zhu
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Higher Education District, Hangzhou, 310018, PR China
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29
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Hewitt SH, Macey G, Mailhot R, Elsegood MRJ, Duarte F, Kenwright AM, Butler SJ. Tuning the anion binding properties of lanthanide receptors to discriminate nucleoside phosphates in a sensing array. Chem Sci 2020; 11:3619-3628. [PMID: 34094050 PMCID: PMC8152522 DOI: 10.1039/d0sc00343c] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 03/10/2020] [Indexed: 12/30/2022] Open
Abstract
The development of synthetic receptors for the selective binding and discrimination of anions in water requires an understanding of how anions interact with these synthetic receptors. Molecules designed to differentiate nucleoside phosphate anions (e.g. ATP, ADP, GTP, GDP, UDP) under physiological conditions could underpin exciting new sensing tools for biomedical research and drug discovery, but it is very challenging due to the similarities in anion structure, size and charge. We present a series of lanthanide-based anion receptors and establish key structural elements that impact on nucleoside phosphate anion binding and sensing. Structural evidence of anion binding using X-ray crystallographic and NMR data, supported by DFT calculations indicate the binding modes between the lanthanide complexes and certain phosphoanions, revealing a bidentate (α-, γ-) binding mode to ATP. We further use four of the receptors to allow discrimination of eight nucleoside phosphate anions in the first array-based assay using lanthanide complexes, taking advantage of the multiple emission bands and long emission lifetimes associated with luminescent lanthanide complexes.
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Affiliation(s)
- Sarah H Hewitt
- Department of Chemistry, Loughborough University Epinal Way Loughborough LE11 3TU UK
| | - Georgina Macey
- Department of Chemistry, Loughborough University Epinal Way Loughborough LE11 3TU UK
| | - Romain Mailhot
- Department of Chemistry, Loughborough University Epinal Way Loughborough LE11 3TU UK
| | - Mark R J Elsegood
- Department of Chemistry, Loughborough University Epinal Way Loughborough LE11 3TU UK
| | - Fernanda Duarte
- Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Alan M Kenwright
- Department of Chemistry, Durham University South Road Durham DH1 3LE UK
| | - Stephen J Butler
- Department of Chemistry, Loughborough University Epinal Way Loughborough LE11 3TU UK
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30
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Tian Y, Zhang Z, Gao N, Huang P, Wu FY. A label-free luminescent assay for tyrosinase activity monitoring and inhibitor screening with responsive lanthanide coordination polymer nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117751. [PMID: 31727517 DOI: 10.1016/j.saa.2019.117751] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 11/02/2019] [Accepted: 11/02/2019] [Indexed: 05/18/2023]
Abstract
In this work, a label-free, selective, and sensitive luminescent sensing platform was established for tyrosinase (TYR) activity monitoring and its inhibitor screening using one kind of lanthanide coordination polymer nanoparticles AMP-Tb/Ag+. By taking advantage of the specific binding and redox properties of Ag+ incorporated into the AMP-Tb network and dopamine (DA) as the product of the model substrate tyramine, the enzymatic reaction and the signal change of the sensing platform was effectively linked. The cooperative effect of a weakened energy transfer from AMP to Tb3+ by altering the electronic structure of Ag+ and an efficient photoinduced election transfer (PET) process caused by dopaquinone facilitated the luminescence quenching of Tb3+. Thus, this luminescent sensing platform could be employed for quantitative evaluation of TYR activity. There was a good linear range for TYR activity from 0.08 to 0.20 U mL-1 with a low detection limit of 0.004 U mL-1. Furthermore, this assay was successfully applied to accurate determination of TYR activity in human serum samples and efficient screening of TYR inhibitors. Considering unique spectral characteristics of lanthanides along with operation simplicity and superior analytical performance, this sensing platform is very promising in clinical diagnosis and drugs screening for TYR-associated diseases.
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Affiliation(s)
- Yao Tian
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Zhipeng Zhang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Nan Gao
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Pengcheng Huang
- College of Chemistry, Nanchang University, Nanchang 330031, China.
| | - Fang-Ying Wu
- College of Chemistry, Nanchang University, Nanchang 330031, China
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31
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Tear LR, Maguire ML, Tropiano M, Yao K, Farrer NJ, Faulkner S, Schneider JE. Enhancing 31P NMR relaxation rates with a kinetically inert gadolinium complex. Dalton Trans 2020; 49:2989-2993. [PMID: 32080690 PMCID: PMC7610995 DOI: 10.1039/c9dt03761f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The kinetically stable heptadentate gadolinium complex Gd.pDO3A (1.Gd) demonstrates significant 31P nuclear magnetic resonance (NMR) relaxation enhancement of biologically relevant phosphate species; adenosine triphosphate (ATP), phosphocreatine (PCr) and inorganic phosphate. Gd.pDO3A (1.Gd) binds these species in fast exchange, enabling the relaxation of the bulk phosphate species in solution. This gives rise to 31P relaxation enhancements up to 250-fold higher than those observed for 31P relaxation enhancements with the commercial MRI contrast agent Gd.DOTA (DOTAREM), 2. Gd.pDO3A-like complexes may have potential applications as 31P magnetic resonance contrast agents, since shortening the T1 relaxation time of phosphate species would reduce the time needed to acquire 31P-MR spectra.
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Affiliation(s)
- Louise R Tear
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, OX1 3TA, UK. and British Heart Foundation Experimental MR Unit (BMRU), University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK
| | - Mahon L Maguire
- British Heart Foundation Experimental MR Unit (BMRU), University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK and Centre for Preclinical Imaging, University of Liverpool, Nuffield Wing, Sherrington Building, Crown Street, Liverpool, L69 3BX, UK
| | - Manuel Tropiano
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, OX1 3TA, UK.
| | - Kezi Yao
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, OX1 3TA, UK.
| | - Nicola J Farrer
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, OX1 3TA, UK.
| | - Stephen Faulkner
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, OX1 3TA, UK.
| | - Jurgen E Schneider
- British Heart Foundation Experimental MR Unit (BMRU), University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK and Leeds Institute of Cardiovascular and Metabolic Medicine, Biomedical Imaging Science Department, University of Leeds, Clarendon Way, Leeds, LS2 9JT, UK
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32
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Monteiro JHSK, Fetto NR, Tucker MJ, de Bettencourt-Dias A. Luminescent Carbazole-Based Eu III and Yb III Complexes with a High Two-Photon Absorption Cross-Section Enable Viscosity Sensing in the Visible and Near IR with One- and Two-Photon Excitation. Inorg Chem 2020; 59:3193-3199. [PMID: 32052955 DOI: 10.1021/acs.inorgchem.9b03561] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The newly synthesized EuIII and YbIII complexes with the new carbazole-based ligands CPAD2- and CPAP4- display the characteristic long-lived metal-centered emission upon one- and two-photon excitation. The EuIII complexes show the expected narrow emission bands in the red region, with emission lifetimes between 0.382 and 1.464 ms and quantum yields between 2.7% and 35.8%, while the YbIII complexes show the expected emission in the NIR region, with emission lifetimes between 0.52 and 37.86 μs and quantum yields between 0.028% and 1.12%. Two-photon absorption cross sections (σ2PA) as high as 857 GM were measured for the two ligands. The complexes showed a strong dependence of the one- and two-photon sensitized emission intensity on solvent viscosity in the range of 0.5-200 cP in the visible and NIR region.
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Affiliation(s)
| | - Natalie R Fetto
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, United States
| | - Matthew J Tucker
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, United States
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33
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Label-free fluorescence “turn-on” strategy for mercury (II) detection based on the T-Hg2+-T configuration and the DNA-sensitized luminescence of terbium (III). Anal Chim Acta 2020; 1099:136-144. [DOI: 10.1016/j.aca.2019.11.059] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/23/2019] [Accepted: 11/23/2019] [Indexed: 01/24/2023]
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34
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Leygue N, Galaup C, Lopera A, Delgado-Pinar E, Williams RM, Gornitzka H, Zwier JM, García-España E, Lamarque L, Picard C. Tripyridinophane Platform Containing Three Acetate Pendant Arms: An Attractive Structural Entry for the Development of Neutral Eu(III) and Tb(III) Complexes in Aqueous Solution. Inorg Chem 2020; 59:1496-1512. [PMID: 31913029 DOI: 10.1021/acs.inorgchem.9b03345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a detailed characterization of Eu3+ and Tb3+ complexes derived from a tripyridinophane macrocycle bearing three acetate side arms (H3tpptac). Tpptac3- displays an overall basicity (∑ log KiH) of 24.5, provides the formation of mononuclear ML species, and shows a good binding affinity for Ln3+ (log KLnL = 17.5-18.7). These complexes are also thermodynamically stable at physiological pH (pEu = 18.6, pTb = 18.0). It should be noted that the pGd value of Gd-tpptac (18.4) is only slightly lower than that of commercially available MRI contrast agents such as Gd-dota (pGd = 19.2). Moreover, a very good selectivity for these ions over the endogenous cations (log KCuL = 14.4, log KZnL = 12.9, and log KCaL = 9.3) is observed. The X-ray structure of the terbium complex shows the metal coordinated by the nine N6O3 donor set of the ligand and one inner-sphere water molecule. DFT calculations result in two Eu-tpptac structures with similar bond energies (ΔE = 0.145 eV): one structure in which the water is coordinated to the metal ion and one structure in which the water molecule is farther away from the ion, bound to the ligand with an OH-π bond. By detailed luminescence experiments, we demonstrate that the europium complex in aqueous solution presents a hydration equilibrium between nine-coordinate, dehydrated [Eu-tpptac]0 and ten-coordinate, monohydrated [Eu-tpptac(H2O)]0 species. A similar trend is observed for the terbium complex. Despite the presence of this hydration equilibrium, the H3tpptac ligand sensitizes Eu3+ and Tb3+ luminescence efficiently in buffered water at physiological pH. Particularly, the terbium complex displays a long excited-state lifetime of 2.24 ms and an overall quantum yield of 33% with a brightness of 3600 M-1 cm-1. Such features of Ln3+ complexes of H3tpptac indicate that this platform appears to be particularly appealing for the further development of luminescent lanthanide labels.
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Affiliation(s)
- Nadine Leygue
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB) , Université Paul Sabatier-Toulouse III/CNRS (UMR5068) , 118 route de Narbonne , F-31062 Toulouse , France
| | - Chantal Galaup
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB) , Université Paul Sabatier-Toulouse III/CNRS (UMR5068) , 118 route de Narbonne , F-31062 Toulouse , France
| | - Alberto Lopera
- Instituto de Ciencia Molecular (ICMOL) , Universitat de València , C/Catedrático José Beltrán 2 , 46980 Paterna , Spain
| | - Estefanía Delgado-Pinar
- Instituto de Ciencia Molecular (ICMOL) , Universitat de València , C/Catedrático José Beltrán 2 , 46980 Paterna , Spain
| | - René M Williams
- Molecular Photonics Group, Van 't Hoff Institute for Molecular Sciences , University of Amsterdam , P.O. Box 94157, 1090 GD Amsterdam , The Netherlands
| | - Heinz Gornitzka
- CNRS, LCC , Université de Toulouse, UPS, INPT , 205 Route de Narbonne , F-31077 Toulouse Cedex 4 , France
| | - Jurriaan M Zwier
- Cisbio bioassays , Parc Marcel Boiteux, BP 84175, 30200 Codolet , France
| | - Enrique García-España
- Instituto de Ciencia Molecular (ICMOL) , Universitat de València , C/Catedrático José Beltrán 2 , 46980 Paterna , Spain
| | - Laurent Lamarque
- Cisbio bioassays , Parc Marcel Boiteux, BP 84175, 30200 Codolet , France
| | - Claude Picard
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB) , Université Paul Sabatier-Toulouse III/CNRS (UMR5068) , 118 route de Narbonne , F-31062 Toulouse , France
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35
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Altunbas O, Ozdas A, Yilmaz MD. Luminescent detection of Ochratoxin A using terbium chelated mesoporous silica nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2020; 382:121049. [PMID: 31470297 DOI: 10.1016/j.jhazmat.2019.121049] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 08/19/2019] [Accepted: 08/19/2019] [Indexed: 06/10/2023]
Abstract
This work represents the time-resolved fluorescence detection of Ochratoxin A (OTA), a highly toxic and commonly found toxin in food stuffs, by a terbium (Tb3+) chelated nanoparticle sensor with high sensitivity and remarkable selectivity. The coordination of OTA to Tb3+ center on nanoparticle surface resulted in the significant enhancement of the fluorescence signal in nanomolar concentrations with a detection limit of 20 ppb. In contrast, no enhancements were observed in the presence of other common mycotoxins such as Aflatoxin B1, Zearalenone, Citrinin and Patulin. The results indicate that the Tb3+ chelated nanoparticle sensor has great potential for applications in food analysis and safety.
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Affiliation(s)
- Osman Altunbas
- Development, Application and Research Center for Strategic Products (SARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey
| | - Ayse Ozdas
- Development, Application and Research Center for Strategic Products (SARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey
| | - M Deniz Yilmaz
- Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080 Konya, Turkey; Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey.
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36
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Baranyai Z, Delli Castelli D, Platas-Iglesias C, Esteban-Gomez D, Bényei A, Tei L, Botta M. Combined NMR, DFT and X-ray studies highlight structural and hydration changes of [Ln(AAZTA)]− complexes across the series. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01442j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
1H NMR, CEST, DFT and X-ray studies reveal that [Ln(AAZTA)]− chelates experience a transition across the Ln(iii) series from fast-exchanging, bisaqua 9-coordinate species, to slow-exchanging monoaqua 8-coordinate structures.
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Affiliation(s)
- Zsolt Baranyai
- Bracco Imaging SpA
- Bracco Research Center
- Colleretto Giacosa (TO)
- Italy
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health Science
- University of Turin
- 10126 Torino
- Italy
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - David Esteban-Gomez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - Attila Bényei
- Department of Physical Chemistry
- Faculty of Science and Technology
- University of Debrecen
- Hungary
| | - Lorenzo Tei
- Department of Science and Technological Innovation
- Università del Piemonte Orientale
- Alessandria
- Italy
| | - Mauro Botta
- Department of Science and Technological Innovation
- Università del Piemonte Orientale
- Alessandria
- Italy
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37
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Kimber P, Plasser F. Toward an understanding of electronic excitation energies beyond the molecular orbital picture. Phys Chem Chem Phys 2020; 22:6058-6080. [DOI: 10.1039/d0cp00369g] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Can we gain an intuitive understanding of excitation energies beyond the molecular picture?
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Affiliation(s)
- Patrick Kimber
- Department of Chemistry
- Loughborough University
- Loughborough
- UK
| | - Felix Plasser
- Department of Chemistry
- Loughborough University
- Loughborough
- UK
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38
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Das D, Gupta SK, Datrik CS, Nandi P, Sudarshan K. Role of alkali charge compensation in the luminescence of CaWO4:Nd3+ and SrWO4:Nd3+ Scheelites. NEW J CHEM 2020. [DOI: 10.1039/d0nj00651c] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present work demonstrates the distinct role of alkali metal ion charge compensators on the luminescence of NIR-emitting Nd3+ Scheelite. The unit cell dimensions of the host lattice and excitation wavelength play a very important role.
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Affiliation(s)
- Debarati Das
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Santosh K. Gupta
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - C. S. Datrik
- Product Development Section
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - P. Nandi
- Glass and Advanced Ceramics Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - K. Sudarshan
- Radiochemistry Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
- Homi Bhabha National Institute
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39
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Huang P. Understanding the Stability Trend Along Light Lanthanide Complexes with an Ehtylenediamine‐Type Ligand: A Quantum Chemical Study. ChemistrySelect 2019. [DOI: 10.1002/slct.201902887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pin‐Wen Huang
- Zhejiang University of Water Resources and Electric Power Hangzhou 310018 Zhejiang China
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40
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Liu Y, Peng S, Angelova L, Nau WM, Hennig A. Label-Free Fluorescent Kinase and Phosphatase Enzyme Assays with Supramolecular Host-Dye Pairs. ChemistryOpen 2019; 8:1350-1354. [PMID: 31741820 PMCID: PMC6848908 DOI: 10.1002/open.201900299] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Indexed: 12/21/2022] Open
Abstract
The combination of the macrocyclic hosts p-sulfonatocalix[4]arene and cucurbit[7]uril with the fluorescent dyes lucigenin and berberine affords two label-free enzyme assays for the detection of kinase and phosphatase activity by fluorescence monitoring. In contrast to established assays, no substrate labeling is required. Since phosphorylation is one of the most important regulatory mechanisms in biological signal transduction, the assays should be useful for identification of inhibitors and activators in high-throughput screening (HTS) format for drug discovery.
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Affiliation(s)
- Yan‐Cen Liu
- Department of Life Sciences and ChemistryJacobs University Bremen gGmbHCampus Ring 128759BremenGermany
| | - Shu Peng
- Department of Life Sciences and ChemistryJacobs University Bremen gGmbHCampus Ring 128759BremenGermany
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, Ministry of EducationNankai UniversityTianjin300071 TianjinChina
| | - Lora Angelova
- Department of Life Sciences and ChemistryJacobs University Bremen gGmbHCampus Ring 128759BremenGermany
| | - Werner M. Nau
- Department of Life Sciences and ChemistryJacobs University Bremen gGmbHCampus Ring 128759BremenGermany
| | - Andreas Hennig
- Department of Life Sciences and ChemistryJacobs University Bremen gGmbHCampus Ring 128759BremenGermany
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41
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Eskonen V, Tong-Ochoa N, Valtonen S, Kopra K, Härmä H. Thermal Dissociation Assay for Time-Resolved Fluorescence Detection of Protein Post-Translational Modifications. ACS OMEGA 2019; 4:16501-16507. [PMID: 31616828 PMCID: PMC6787904 DOI: 10.1021/acsomega.9b02134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
Post-translational modifications (PTMs) of proteins provide an important mechanism for cell signal transduction control. Impaired PTM control is a key feature in multiple different disease states, and thus the enzyme-controlling PTMs have drawn attention as highly promising drug targets. Due to the importance of PTMs, various methods to monitor PTM enzyme activity have been developed, but universal high-throughput screening (HTS), a compatible method for different PTMs, remains elusive. Here, we present a homogeneous single-label thermal dissociation assay for the detection of enzymatic PTM removal. The developed method allows the use of micromolar concentration of substrate peptide, which is expected to be beneficial when monitoring enzymes with low activity and peptide binding affinity. We prove the thermal dissociation concept functionality using peptides for dephosphorylation, deacetylation, and demethylation and demonstrate the HTS-compatible flash isothermal method for PTM enzyme activity monitoring. Using specific inhibitors, we detected literature-comparable IC50 values and Z' factors from 0.61 to 0.72, proving the HTS compatibility of the thermal peptide-break technology.
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Affiliation(s)
- Ville Eskonen
- Materials Chemistry and Chemical
Analysis, Department of Chemistry, University
of Turku, Vatselankatu 2, FI-20014 Turku, Finland
| | - Natalia Tong-Ochoa
- Materials Chemistry and Chemical
Analysis, Department of Chemistry, University
of Turku, Vatselankatu 2, FI-20014 Turku, Finland
| | - Salla Valtonen
- Materials Chemistry and Chemical
Analysis, Department of Chemistry, University
of Turku, Vatselankatu 2, FI-20014 Turku, Finland
| | - Kari Kopra
- Materials Chemistry and Chemical
Analysis, Department of Chemistry, University
of Turku, Vatselankatu 2, FI-20014 Turku, Finland
| | - Harri Härmä
- Materials Chemistry and Chemical
Analysis, Department of Chemistry, University
of Turku, Vatselankatu 2, FI-20014 Turku, Finland
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42
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Gao Y, Hilbers M, Zhang H, Tanase S. Designed Synthesis of Multiluminescent Materials Using Lanthanide Metal-Organic Frameworks and Carbon Dots as Building-Blocks. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900876] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuan Gao
- Van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Michiel Hilbers
- Van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Hong Zhang
- Van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
- State Key Laboratory of Luminescence and Applications; Changchun Institute of Optics; Chinese Academy of Sciences; 130033 Changchun P. R. China
| | - Stefania Tanase
- Van 't Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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Gregório T, Leão JDM, Barbosa GA, Ramos JDL, Om Kumar Giese S, Briganti M, Rodrigues PC, de Sá EL, Viana ER, Hughes DL, Carlos LD, Ferreira RAS, Macedo AG, Nunes GG, Soares JF. Promoting a Significant Increase in the Photoluminescence Quantum Yield of Terbium(III) Complexes by Ligand Modification. Inorg Chem 2019; 58:12099-12111. [DOI: 10.1021/acs.inorgchem.9b01397] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thaiane Gregório
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Joyce de M. Leão
- Department of Physics, Federal University of Technology, Av. Sete de Setembro, 3165, 80230-901 Curitiba, Paraná, Brazil
| | - Guilherme A. Barbosa
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Jaqueline de L. Ramos
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Siddhartha Om Kumar Giese
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Matteo Briganti
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Paula C. Rodrigues
- Department of Chemistry, Federal University of Technology, Rua Deputado Heitor Alencar Furtado, 5000, 81280-340 Curitiba, Paraná, Brazil
| | - Eduardo L. de Sá
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Emilson R. Viana
- Department of Physics, Federal University of Technology, Av. Sete de Setembro, 3165, 80230-901 Curitiba, Paraná, Brazil
| | - David L. Hughes
- School of Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K
| | - Luís D. Carlos
- Department of Physics, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Rute A. S. Ferreira
- Department of Physics, Campus Universitário de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Andreia G. Macedo
- Department of Physics, Federal University of Technology, Av. Sete de Setembro, 3165, 80230-901 Curitiba, Paraná, Brazil
| | - Giovana G. Nunes
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
| | - Jaísa F. Soares
- Department of Chemistry, Federal University of Paraná, Centro Politécnico, Jardim das Américas, 81530-900 Curitiba, Paraná, Brazil
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Minyaev ME, Komarov PD, Roitershtein DM, Lyssenko KA, Nifant’ev IE, Puntus LN, Varaksina EA, Borisov RS, Dyadchenko VP, Ivchenko PV. Aryloxy Alkyl Magnesium versus Dialkyl Magnesium in the Lanthanidocene-Catalyzed Coordinative Chain Transfer Polymerization of Ethylene. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00243] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Mikhail E. Minyaev
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
| | - Pavel D. Komarov
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
| | - Dmitrii M. Roitershtein
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky pr. 47, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Miasnitskaya Str. 20, Moscow 101000, Russian Federation
| | - Konstantin A. Lyssenko
- G.V. Plekhanov Russian University of Economics, 36 Stremyanny Per., Moscow 117997, Russian Federation
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
| | - Ilya E. Nifant’ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
| | - Lada N. Puntus
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- V.A. Kotel’nikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, 11-7 Mokhovaya Str., Moscow 125009, Russian Federation
| | - Evgenia A. Varaksina
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53 Leninsky Prospect, Moscow 119991, Russian Federation
| | - Roman S. Borisov
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- Peoples’ Friendship University of Russia, 6 Miklukho-Maklaya Str., Moscow 117198, Russian Federation
| | - Viktor P. Dyadchenko
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
| | - Pavel V. Ivchenko
- A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky pr. 29, Moscow 119991, Russian Federation
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
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Urmey AR, Zondlo NJ. Design of a Protein Motif Responsive to Tyrosine Nitration and an Encoded Turn-Off Sensor of Tyrosine Nitration. Biochemistry 2019; 58:2822-2833. [PMID: 31140788 PMCID: PMC6688601 DOI: 10.1021/acs.biochem.9b00334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tyrosine nitration is a protein post-translational modification that is predominantly non-enzymatic and is observed to be increased under conditions of nitrosative stress and in numerous disease states. A small protein motif (14-18 amino acids) responsive to tyrosine nitration has been developed. In this design, nitrotyrosine replaced the conserved Glu12 of an EF-hand metal-binding motif. Thus, the non-nitrated peptide bound terbium weakly. In contrast, tyrosine nitration resulted in a 45-fold increase in terbium affinity. Nuclear magnetic resonance spectroscopy indicated direct binding of nitrotyrosine to the metal and EF-hand-like metal contacts in this designed peptide. Nitrotyrosine is an efficient quencher of fluorescence. To develop a sensor of tyrosine nitration, the initial design was modified to incorporate Glu residues at EF-hand positions 9 and 16 as additional metal-binding residues, to increase the terbium affinity of the peptide with unmodified tyrosine. This peptide with a tyrosine at residue 12 bound terbium and effectively sensitized terbium luminescence. Tyrosine nitration resulted in a 180-fold increase in terbium affinity ( Kd = 1.6 μM) and quenching of terbium luminescence. This sequence was incorporated as an encoded protein tag and applied as a turn-off fluorescent protein sensor of tyrosine nitration. The sensor was responsive to nitration by peroxynitrite, with fluorescence quenched upon nitration. The greater terbium affinity upon tyrosine nitration resulted in a large dynamic range and sensitivity to substoichiometric nitration. An improved approach for the synthesis of peptides containing nitrotyrosine was also developed, via the in situ silyl protection of nitrotyrosine. This work represents the first designed, encodable protein motif that is responsive to tyrosine nitration.
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Affiliation(s)
- Andrew R. Urmey
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Neal J. Zondlo
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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Ogata S, Komiya H, Goto N, Tanabe R, Sugimoto K, Kawaguchi S, Goto K, Hatanaka M, Ishii A, Hasegawa M. Strong Luminescent Europium Complexes Induced by the Unprecedented Anti-chelate Effect of Acyl Groups on a N6-Hexadentate Ligand. CHEM LETT 2019. [DOI: 10.1246/cl.190140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shuhei Ogata
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
- Mirai Molecular Material Design Institute, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Hiroaki Komiya
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Naoto Goto
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Ryota Tanabe
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Kunihisa Sugimoto
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - Shogo Kawaguchi
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - Kenta Goto
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan
| | - Miho Hatanaka
- Institute for Research Initiatives, Division for Research Strategy, Graduate School of Materials Science, Data Science Center, Nara Institute for Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Ayumi Ishii
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
- Mirai Molecular Material Design Institute, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Miki Hasegawa
- College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
- Mirai Molecular Material Design Institute, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
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Kalugin AE, Komarov PD, Minyaev ME, Lyssenko KA, Roitershtein DM, Nifant’ev IE. Bis[μ-bis-(2,6-diiso-propyl-phen-yl) phosphato-κ 2 O: O']bis-[(2,2'-bi-pyridine-κ 2 N, N')lithium] toluene disolvate and its catalytic activity in ring-opening polymerization of ∊-caprolactone and l-dilactide. Acta Crystallogr E Crystallogr Commun 2019; 75:848-853. [PMID: 31391980 PMCID: PMC6658944 DOI: 10.1107/s2056989019006960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 05/14/2019] [Indexed: 12/04/2022]
Abstract
The solvated centrosymmmtric title compound, [Li2(C24H34O4P)2(C10H8N2)2]·2C7H8, was formed in the reaction between {Li[(2,6-iPr2C6H3-O)2POO](MeOH)3}(MeOH) and 2,2'-bi-pyridine (bipy) in toluene. The structure has monoclinic (P21/n) symmetry at 120 K and the asymmetric unit consists of half a complex mol-ecule and one mol-ecule of toluene solvent. The diaryl phosphate ligand demonstrates a μ-κO:κO'-bridging coordination mode and the 2,2'-bi-pyridine ligand is chelating to the Li+ cation, generating a distorted tetra-hedral LiN2O2 coordination polyhedron. The complex exhibits a unique dimeric Li2O4P2 core. One isopropyl group is disordered over two orientations in a 0.621 (4):0.379 (4) ratio. In the crystal, weak C-H⋯O and C-H⋯π inter-actions help to consolidate the packing. Catalytic systems based on the title complex and on the closely related complex {Li[(2,6-iPr2C6H3-O)2POO](MeOH)3}(MeOH) display activity in the ring-opening polymerization of ∊-caprolactone and l-dilactide.
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Affiliation(s)
- Alexey E. Kalugin
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
- Moscow Institute of Physics and Technology, Department of Biological and Medical Physics, 9 Institutskiy Per., Dolgoprudny, Moscow Region, 141701, Russian Federation
| | - Pavel D. Komarov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
| | - Mikhail E. Minyaev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
| | - Konstantin A. Lyssenko
- G.V. Plekhanov Russian University of Economics, 36 Stremyanny Per., Moscow, 117997, Russian Federation
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
| | - Dmitrii M. Roitershtein
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, Moscow 119991, Russian Federation
| | - Ilya E. Nifant’ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
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Vaughan J, Bertata MAM, Skelton BW, Ogden MI, Mocerino M. Metal coordination with an amide-functionalized axially chiral resorcinarene. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-019-00922-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Götzke L, Schaper G, März J, Kaden P, Huittinen N, Stumpf T, Kammerlander KK, Brunner E, Hahn P, Mehnert A, Kersting B, Henle T, Lindoy LF, Zanoni G, Weigand JJ. Coordination chemistry of f-block metal ions with ligands bearing bio-relevant functional groups. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.01.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Hewitt SH, Ali R, Mailhot R, Antonen CR, Dodson CA, Butler SJ. A simple, robust, universal assay for real-time enzyme monitoring by signalling changes in nucleoside phosphate anion concentration using a europium(iii)-based anion receptor. Chem Sci 2019; 10:5373-5381. [PMID: 31191895 PMCID: PMC6540902 DOI: 10.1039/c9sc01552c] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 04/24/2019] [Indexed: 12/28/2022] Open
Abstract
Enzymes that consume and produce nucleoside polyphosphate (NPP) anions represent major targets in drug discovery. For example, protein kinases are one of the largest classes of drug targets in the fight against cancer. The accurate determination of enzyme kinetics and mechanisms is a critical aspect of drug discovery research. To increase confidence in the selection of lead drug compounds it is crucial that pharmaceutical researchers have robust, affordable assays to measure enzyme activity accurately. We present a simple, sensitive microplate assay for real-time monitoring of a range of pharmaceutically important enzyme reactions that generate NPP anions, including kinases and glycosyltransferases. Our assay utilises a single, stable europium(iii) complex that binds reversibly to NPP anions, signalling the dynamic changes in NPP product/substrate ratio during an enzyme reaction using time-resolved luminescence. This supramolecular approach to enzyme monitoring overcomes significant limitations in existing assays, obviating the need for expensive antibodies or equipment, chemically labelled substrates or products and isolation or purification steps. Our label and antibody-free method enables rapid and quantitative analysis of enzyme activities and inhibition, offering a potentially powerful tool for use in drug discovery, suitable for high-throughput screening of inhibitors and accurate measurements of enzyme kinetic parameters.
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Affiliation(s)
- Sarah H Hewitt
- Department of Chemistry , Loughborough University , Epinal Way , Loughborough , LE11 3TU , UK .
| | - Rozee Ali
- Department of Chemistry , Loughborough University , Epinal Way , Loughborough , LE11 3TU , UK .
| | - Romain Mailhot
- Department of Chemistry , Loughborough University , Epinal Way , Loughborough , LE11 3TU , UK .
| | - Chloe R Antonen
- Department of Chemistry , Loughborough University , Epinal Way , Loughborough , LE11 3TU , UK .
| | - Charlotte A Dodson
- Department of Pharmacy & Pharmacology , University of Bath , Claverton Down , Bath , BA2 7AY , UK
| | - Stephen J Butler
- Department of Chemistry , Loughborough University , Epinal Way , Loughborough , LE11 3TU , UK .
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