1
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Peng Y, Li Y, Li L, Xie M, Wang Y, Butch CJ. Coating influence on inner shell water exchange: An underinvestigated major contributor to SPIONs relaxation properties. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 54:102713. [PMID: 37839694 DOI: 10.1016/j.nano.2023.102713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/15/2023] [Accepted: 09/26/2023] [Indexed: 10/17/2023]
Abstract
Superparamagnetic iron oxide nanoparticles (SPIONs) are heavily studied as potential MRI contrast enhancing agents. Every year, novel coatings are reported which yield large increases in relaxivity compared to similar particles. However, the reason for the increased performance is not always well understood mechanistically. In this review, we attempt to relate these advances back to fundamental models of relaxivity, developed for chelated metal ions, primarily gadolinium. We focus most closely on the three-shell model which considers the relaxation of surface-bound, entrained, and bulk water molecules as three distinct contributions to total relaxation. Because SPIONs are larger, more complex, and entrain significantly more water than gadolinium-based contrast agents, we consider how to adapt the application of classical models to SPIONs in a predictive manner. By carefully considering models and previous results, a qualitative model of entrained water interactions emerges, based primarily on the contributions of core size, coating thickness, density, and hydrophilicity.
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Affiliation(s)
- Yusong Peng
- Department of Material Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing, China
| | - Yunlong Li
- Department of Material Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing, China
| | - Li Li
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing, China
| | - Manman Xie
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing, China; School of Medical Imaging, Xuzhou Medical University, Xuzhou 221006, China.
| | - Yiqing Wang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing, China.
| | - Christopher J Butch
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing, China.
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2
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Zhang C, Gao X, Chen W, He M, Yu Y, Gao G, Sun T. Title: Advances of Gold Nanoclusters for Bioimaging. iScience 2022; 25:105022. [PMID: 36147954 PMCID: PMC9485074 DOI: 10.1016/j.isci.2022.105022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Gold nanoclusters (AuNCs) have become a promising material for bioimaging detection because of their tunable photoluminescence, large Stokes shift, low photobleaching, and good biocompatibility. Last decade, great efforts have been made to develop AuNCs for enhanced imaging contrast and multimodal imaging. Herein, an updated overview of recent advances in AuNCs was present for visible fluorescence (FL) imaging, near-infrared fluorescence (NIR-FL) imaging, two-photon near-infrared fluorescence (TP-NIR-FL) imaging, computed tomography (CT) imaging, positron emission tomography (PET) imaging, magnetic resonance imaging (MRI), and photoacoustic (PA) imaging. The justification of AuNCs applied in bioimaging mentioned above applications was discussed, the performance location of different AuNCs were summarized and highlighted in an unified parameter coordinate system of corresponding bioimaging, and the current challenges, research frontiers, and prospects of AuNCs in bioimaging were discussed. This review will bring new insights into the future development of AuNCs in bio-diagnostic imaging.
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Affiliation(s)
- Cheng Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Xiaobing Gao
- General Hospital of Central Theater Command, Wuhan 430070, China
| | - Wenrui Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Meng He
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Yao Yu
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Guanbin Gao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
- Corresponding author
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
- Corresponding author
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3
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Geng Y, Wu T, Han Q, Yang Y, Chen Z, Li X, Yin B, Zhou Y, Ling Y. Gadolinium-based contrast agents built of DO3A-pyridine scaffold: Precisely tuning carboxylate group for enhanced magnetic resonance imaging. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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4
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Improved Recovery and Selectivity of Lanthanide-Ion-Binding Cyclic Peptide Hosts by Changing the Position of Acidic Amino Acids. MINERALS 2022. [DOI: 10.3390/min12020148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The development of an effective host molecule to separate lanthanide (Ln) ions and a method for predicting its guest recognition/self-assembly behavior based on primary chemical structures are highly sought after in both academia and industry. Herein, we report the improvement of one-pot Ln ion recovery and a performance prediction method for four new cyclic peptide hosts that differ in the position of acidic amino acids. These cyclic peptide hosts could recognize Ln3+ directly through a 1:1 complexation–precipitation process and exhibited high Lu3+ selectivity in spite of similar ion size and electronegativity when the positions of the acidic amino acids were changed. This unpredictable selectivity was explained by considering the dipole moment, lowest unoccupied molecular orbital, and cohesion energy. In addition, a semi-empirical function using these parameters was proposed for screening the sequence and estimating the isolated yields without long-time molecular dynamics calculations. The insights obtained from this study can be employed for the development of high-performance peptides for the selective recovery of Ln and other metal ions, as well as for the construction of diverse supramolecular recognition systems.
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5
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Webster AM, Peacock AFA. De novo designed coiled coils as scaffolds for lanthanides, including novel imaging agents with a twist. Chem Commun (Camb) 2021; 57:6851-6862. [DOI: 10.1039/d1cc02013g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The design of artificial miniature lanthanide proteins, provide an opportunity to access new functional metalloproteins as well as insight into native lanthanide biochemistry.
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Garai A, Delangle P. Recent advances in uranyl binding in proteins thanks to biomimetic peptides. J Inorg Biochem 2019; 203:110936. [PMID: 31864150 DOI: 10.1016/j.jinorgbio.2019.110936] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/05/2019] [Accepted: 11/17/2019] [Indexed: 12/29/2022]
Abstract
Uranium is an element belonging to the actinide series. It is ubiquitous in rock, soil, and water. Uranium is found in the ecosystem due to mining and milling industrial activities and processing to nuclear fuel, but also to the extensive use of phosphate fertilizers. Understanding uranium binding in vivo is critical, first to deepen our knowledge of molecular events leading to chemical toxicity, but also to provide new mechanistic information useful for the development of efficient decorporation treatments to be applied in case of intoxication. The most stable form in physiological conditions is the uranyl cation (UO22+), in which uranium oxidation state is +VI. This short review presents uranyl coordination properties and chelation, and what is currently known about uranium binding to proteins. Although several target proteins have been identified, the UO22+ binding sites have barely been identified. Biomimetic approaches using model peptides are good options to shed light on high affinity uranyl binding sites in proteins. A strategy based on constrained cyclodecapeptides allowed recently to propose a tetraphosphate binding site for uranyl that provides an affinity similar to the one measured with the phosphoprotein osteopontin.
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Affiliation(s)
- Aditya Garai
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, F-38000 Grenoble, France
| | - Pascale Delangle
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, F-38000 Grenoble, France.
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7
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Laporte FA, Lebrun C, Vidaud C, Delangle P. Phosphate-Rich Biomimetic Peptides Shed Light on High-Affinity Hyperphosphorylated Uranyl Binding Sites in Phosphoproteins. Chemistry 2019; 25:8570-8578. [PMID: 30908736 DOI: 10.1002/chem.201900646] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Indexed: 12/31/2022]
Abstract
Some phosphoproteins such as osteopontin (OPN) have been identified as high-affinity uranyl targets. However, the binding sites required for interaction with uranyl and therefore involved in its toxicity have not been identified in the whole protein. The biomimetic approach proposed here aimed to decipher the nature of these sites and should help to understand the role of the multiple phosphorylations in UO2 2+ binding. Two hyperphosphorylated cyclic peptides, pS168 and pS1368 containing up to four phosphoserine (pSer) residues over the ten amino acids present in the sequences, were synthesized with all reactions performed in the solid phase, including post-phosphorylation. These β-sheet-structured peptides present four coordinating residues from four amino acid side chains pointing to the metal ion, either three pSer and one glutamate in pS168 or four pSer in pS1368 . Significantly, increasing the number of pSer residues up to four in the cyclodecapeptide scaffolds produced molecules with an affinity constant for UO2 2+ that is as large as that reported for osteopontin at physiological pH. The phosphate-rich pS1368 can thus be considered a relevant model of UO2 2+ coordination in this intrinsically disordered protein, which wraps around the metal ion to gather four phosphate groups in the UO2 2+ coordination sphere. These model hyperphosphorylated peptides are highly selective for UO2 2+ with respect to endogenous Ca2+ , which makes them good starting structures for selective UO2 2+ complexation.
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Affiliation(s)
- Fanny A Laporte
- INAC SyMMES, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Colette Lebrun
- INAC SyMMES, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Claude Vidaud
- CEA, Fundamental Research Division, Biosciences and Biotechnologies Institute of Aix-Marseille, 30207, Bagnols sur Céze, France
| | - Pascale Delangle
- INAC SyMMES, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
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8
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Kotynia A, Pap JS, Brasun J. The binding abilities of homodetic cyclic His-peptides toward copper ions. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.07.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Mesterházy E, Lebrun C, Jancsó A, Delangle P. A Constrained Tetrapeptide as a Model of Cu(I) Binding Sites Involving Cu4S6 Clusters in Proteins. Inorg Chem 2018; 57:5723-5731. [DOI: 10.1021/acs.inorgchem.7b02735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Edit Mesterházy
- INAC, SYMMES, Université Grenoble Alpes, CEA, CNRS, F-38000 Grenoble, France
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, Szeged H-6720, Hungary
| | - Colette Lebrun
- INAC, SYMMES, Université Grenoble Alpes, CEA, CNRS, F-38000 Grenoble, France
| | - Attila Jancsó
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, Szeged H-6720, Hungary
| | - Pascale Delangle
- INAC, SYMMES, Université Grenoble Alpes, CEA, CNRS, F-38000 Grenoble, France
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10
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Mesterházy E, Lebrun C, Crouzy S, Jancsó A, Delangle P. Short oligopeptides with three cysteine residues as models of sulphur-rich Cu(i)- and Hg(ii)-binding sites in proteins. Metallomics 2018; 10:1232-1244. [DOI: 10.1039/c8mt00113h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Peptides mimicking sulphur-rich fragments found in metallothioneins display unexpectedly different behaviours with the two metal ions Hg(ii) and Cu(i).
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Affiliation(s)
- Edit Mesterházy
- INAC/SYMMES/Université Grenoble Alpes
- CEA
- CNRS
- 38000 Grenoble
- France
| | - Colette Lebrun
- Department of Inorganic and Analytical Chemistry
- University of Szeged
- Szeged H-6720
- Hungary
| | - Serge Crouzy
- BIG/LCBM/Université Grenoble Alpes
- CEA
- CNRS
- (UMR 5249)
- 38000 Grenoble
| | - Attila Jancsó
- Department of Inorganic and Analytical Chemistry
- University of Szeged
- Szeged H-6720
- Hungary
| | - Pascale Delangle
- INAC/SYMMES/Université Grenoble Alpes
- CEA
- CNRS
- 38000 Grenoble
- France
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11
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Conte-Daban A, Boff B, Candido Matias A, Aparicio CNM, Gateau C, Lebrun C, Cerchiaro G, Kieffer I, Sayen S, Guillon E, Delangle P, Hureau C. A Trishistidine Pseudopeptide with Ability to Remove Both Cu Ι and Cu ΙΙ from the Amyloid-β Peptide and to Stop the Associated ROS Formation. Chemistry 2017; 23:17078-17088. [PMID: 28846165 PMCID: PMC5714062 DOI: 10.1002/chem.201703429] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Indexed: 01/08/2023]
Abstract
The pseudopeptide L, derived from a nitrilotriacetic acid scaffold and functionalized with three histidine moieties, is reminiscent of the amino acid side chains encountered in the Alzheimer's peptide (Aβ). Its synthesis and coordination properties for CuΙ and CuΙΙ are described. L efficiently complex CuΙΙ in a square-planar geometry involving three imidazole nitrogen atoms and an amidate-Cu bond. By contrast, CuΙ is coordinated in a tetrahedral environment. The redox behavior is irreversible and follows an ECEC mechanism in accordance with the very different environments of the two redox states of the Cu center. This is in line with the observed resistance of the CuΙ complex to oxidation by oxygen and the CuΙΙ complex reduction by ascorbate. The affinities of L for CuΙΙ and CuΙ at physiological pH are larger than that reported for the Aβ peptide. Therefore, due to its peculiar Cu coordination properties, the ligand L is able to target both redox states of Cu, redox silence them and prevent reactive oxygen species production by the CuAβ complex. Because reactive oxygen species contribute to the oxidative stress, a key issue in Alzheimer's disease, this ligand thus represents a new strategy in the long route of finding molecular concepts for fighting Alzheimer's disease.
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Affiliation(s)
- A. Conte-Daban
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne,BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4, France
| | - B. Boff
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - A. Candido Matias
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
- Center for Natural Sciences and Humanities, Federal University of ABC – UFABC 09210-580, Santo André, SP, Brazil
| | - C. N. Montes Aparicio
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne,BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4, France
| | - C. Gateau
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - C. Lebrun
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - G. Cerchiaro
- Center for Natural Sciences and Humanities, Federal University of ABC – UFABC 09210-580, Santo André, SP, Brazil
| | - I. Kieffer
- BM30B/FAME beamline, ESRF, F-38043 Grenoble cedex 9, France
- Observatoire des Sciences de l’Univers de Grenoble, UMS 832 CNRS Université Grenoble Alpes, F-38041 Grenoble, France
| | - S. Sayen
- Institut de Chimie Moléculaire de Reims (ICMR, UMR CNRS 7312), Université de Reims Champagne-Ardenne, F-51687 Reims Cedex 2, France
| | - E. Guillon
- Institut de Chimie Moléculaire de Reims (ICMR, UMR CNRS 7312), Université de Reims Champagne-Ardenne, F-51687 Reims Cedex 2, France
| | - P. Delangle
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES (UMR 5819), CIBEST, 17 rue des martyrs, F-38 000 Grenoble, France
| | - C. Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne,BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4, France
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12
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Starck M, Laporte FA, Oros S, Sisommay N, Gathu V, Solari PL, Creff G, Roques J, Den Auwer C, Lebrun C, Delangle P. Cyclic Phosphopeptides to Rationalize the Role of Phosphoamino Acids in Uranyl Binding to Biological Targets. Chemistry 2017; 23:5281-5290. [PMID: 28164389 DOI: 10.1002/chem.201605481] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Indexed: 12/24/2022]
Abstract
The specific molecular interactions responsible for uranium toxicity are not yet understood. The uranyl binding sites in high-affinity target proteins have not been identified yet and the involvement of phosphoamino acids is still an important question. Short cyclic peptide sequences, with three glutamic acids and one phosphoamino acid, are used as simple models to mimic metal binding sites in phosphoproteins and to help understand the mechanisms involved in uranium toxicity. A combination of peptide design and synthesis, analytical chemistry, extended X-ray absorption fine structure (EXAFS) spectroscopy, and DFT calculations demonstrates the involvement of the phosphate group in the uranyl coordination sphere together with the three carboxylates of the glutamate moieties. The affinity constants measured with a reliable analytical competitive approach at physiological pH are significantly enhanced owing to the presence of the phosphorous moiety. These findings corroborate the importance of phosphoamino acids in uranyl binding in proteins and the relevance of considering phosphoproteins as potential uranyl targets in vivo.
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Affiliation(s)
- Matthieu Starck
- INAC/SyMMES, UMR5819, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Fanny A Laporte
- INAC/SyMMES, UMR5819, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Stephane Oros
- INAC/SyMMES, UMR5819, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Nathalie Sisommay
- INAC/SyMMES, UMR5819, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Vicky Gathu
- INAC/SyMMES, UMR5819, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'orme des Merisiers, Saint-Aubin, 91192, Gif-sur-Yvette, France
| | - Gaëlle Creff
- Institut de Chimie de Nice, UMR7272, Université Côte d'Azur, 06108, Nice, France
| | - Jérôme Roques
- Institut de Physique Nucléaire d'Orsay, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, France
| | - Christophe Den Auwer
- Institut de Chimie de Nice, UMR7272, Université Côte d'Azur, 06108, Nice, France
| | - Colette Lebrun
- INAC/SyMMES, UMR5819, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
| | - Pascale Delangle
- INAC/SyMMES, UMR5819, Université Grenoble Alpes, CEA, CNRS, 38000, Grenoble, France
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13
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Engineering Short Preorganized Peptide Sequences for Metal Ion Coordination: Copper(II) a Case Study. Methods Enzymol 2016. [PMID: 27586340 DOI: 10.1016/bs.mie.2016.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Peptides are multidentate chiral ligands capable of coordinating different metal ions. Nowadays, they can be obtained with high yield and purity, thanks to the advances on peptide/protein chemistry as well as in equipment (peptide synthesizers). Based on the identity and length of their amino acid sequences, peptides can present different degrees of flexibility and folding. Although short peptide sequences (<20 amino acids) usually lack structure in solution, different levels of structural preorganization can be induced by introducing conformational constraints, such as β-turn/loop template sequences and backbone cyclization. For all these reasons, and the fact that one is not restricted to use proteinogenic amino acids, small peptidic scaffolds constitute a simple and versatile platform for the development of inorganic systems with tailor-made properties and functions. Here we outline a general approach to the design of short preorganized peptide sequences (10-16 amino acids) for metal ion coordination. Based on our experience, we present a general scheme for the design, synthesis, and characterization of these peptidic scaffolds and provide protocols for the study of their metal ion coordination properties.
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14
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Campos SRR, Iranzo O, Baptista AM. Constant-pH MD Simulations Portray the Protonation and Structural Behavior of Four Decapeptides Designed to Coordinate Cu(2+). J Phys Chem B 2016; 120:1080-91. [PMID: 26813109 DOI: 10.1021/acs.jpcb.5b12052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The cyclic decapeptide C-Asp, containing one Asp residue and three His residues, was designed by Fragoso et al. (Chem. Eur. J. 2013, 19, 2076) to bind Cu(2+) exclusively through the side chain groups and mimic copper coordination in metalloproteins. A variant of the cyclodecapeptide where Asp is substituted by Asn (C-Asn) has also been synthesized in addition to the linear ("open") counterparts of both forms (O-Asp and O-Asn), testing the importance of cyclization and the presence of Asp in Cu(2+) coordination (Chem. Eur. J. 2013, 19, 2076; Dalton Trans. 2013, 42, 6182). All peptides formed a major species at neutral pH that was able to coordinate Cu(2+) exclusively through the neutral imidazole groups and the Asp side chain, when present, with C-Asp being the most effective. A detailed description of the protonation behavior of each histidine could help understanding the coordination species being formed in the pH range and eventually further optimizing the peptide's design. However, the standard current methods (NMR titrations) are not very suited for proximal groups titrating in the same pH range. In this work, we used the stochastic titration constant-pH molecular dynamics method to calculate the protonation curves and pKa of each titrable residue in the four decapeptides, in the absence of Cu(2+) ions. The global protonation curves obtained in our simulations are in very good agreement with the existing potentiometric titration curves. The histidines are titrating very closely, and the Asp forms abundant salt bridges with the basic residues, displaying an unusually low pKa value. In addition, we could observe that the four peptides are very unstructured in the absence of copper, and not even the cyclic forms exhibit a significant β-sheet, unlike what could be expected from the presence of β-turn inducer units in this type of scaffold.
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Affiliation(s)
- Sara R R Campos
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Av. da República, 2780-157 Oeiras, Portugal
| | - Olga Iranzo
- Aix Marseille Université , Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France
| | - António M Baptista
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Av. da República, 2780-157 Oeiras, Portugal
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15
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16
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Starck M, Sisommay N, Laporte FA, Oros S, Lebrun C, Delangle P. Preorganized Peptide Scaffolds as Mimics of Phosphorylated Proteins Binding Sites with a High Affinity for Uranyl. Inorg Chem 2015; 54:11557-62. [PMID: 26583259 DOI: 10.1021/acs.inorgchem.5b02249] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Cyclic peptides with two phosphoserines and two glutamic acids were developed to mimic high-affinity binding sites for uranyl found in proteins such as osteopontin, which is believed to be a privileged target of this ion in vivo. These peptides adopt a β-sheet structure that allows the coordination of the latter amino acid side chains in the equatorial plane of the dioxo uranyl cation. Complementary spectroscopic and analytical methods revealed that these cyclic peptides are efficient uranyl chelating peptides with a large contribution from the phosphorylated residues. The conditional affinity constants were measured by following fluorescence tryptophan quenching and are larger than 10(10) at physiological pH. These compounds are therefore promising models for understanding uranyl chelation by proteins, which is relevant to this actinide ion toxicity.
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Affiliation(s)
- Matthieu Starck
- Université Grenoble Alpes , INAC-SCIB, F-38000 Grenoble, France.,CEA , INAC-SCIB, F-38000 Grenoble, France
| | - Nathalie Sisommay
- Université Grenoble Alpes , INAC-SCIB, F-38000 Grenoble, France.,CEA , INAC-SCIB, F-38000 Grenoble, France
| | - Fanny A Laporte
- Université Grenoble Alpes , INAC-SCIB, F-38000 Grenoble, France.,CEA , INAC-SCIB, F-38000 Grenoble, France
| | - Stéphane Oros
- Université Grenoble Alpes , INAC-SCIB, F-38000 Grenoble, France.,CEA , INAC-SCIB, F-38000 Grenoble, France
| | - Colette Lebrun
- Université Grenoble Alpes , INAC-SCIB, F-38000 Grenoble, France.,CEA , INAC-SCIB, F-38000 Grenoble, France
| | - Pascale Delangle
- Université Grenoble Alpes , INAC-SCIB, F-38000 Grenoble, France.,CEA , INAC-SCIB, F-38000 Grenoble, France
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17
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Fragoso A, Carvalho T, Rousselot-Pailley P, Correia dos Santos MM, Delgado R, Iranzo O. Effect of the Peptidic Scaffold in Copper(II) Coordination and the Redox Properties of Short Histidine-Containing Peptides. Chemistry 2015; 21:13100-11. [DOI: 10.1002/chem.201501715] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Indexed: 01/07/2023]
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18
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Bonnet CS, Laine S, Buron F, Tircsó G, Pallier A, Helm L, Suzenet F, Tóth É. A Pyridine-Based Ligand with Two Hydrazine Functions for Lanthanide Chelation: Remarkable Kinetic Inertness for a Linear, Bishydrated Complex. Inorg Chem 2015; 54:5991-6003. [DOI: 10.1021/acs.inorgchem.5b00804] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Célia S. Bonnet
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, France
| | - Sophie Laine
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, France
| | - Frédéric Buron
- Université d’Orléans and CNRS, Institut de Chimie Organique et Analytique, UMR 7311 rue de Chartres, F-45067 Orléans, France
| | - Gyula Tircsó
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, France
- Department of Inorganic and Analytical
Chemistry, University of Debrecen, Egyetem tér 1, 4010 Debrecen, Hungary
- Le Studium, Loire Valley Institute for Advanced Studies, 1 Rue Dupanloup, 45000 Orléans, France
| | - Agnès Pallier
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, France
| | - Lothar Helm
- Laboratory
of Inorganic and Bioinorganic Chemistry, Ecole Polytechnique Fédérale de Lausanne, BCH, 1015 Lausanne, Switzerland
| | - Franck Suzenet
- Université d’Orléans and CNRS, Institut de Chimie Organique et Analytique, UMR 7311 rue de Chartres, F-45067 Orléans, France
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS, rue Charles Sadron, 45071 Orléans, France
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19
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Khan S, Kubica-Misztal A, Kruk D, Kowalewski J, Odelius M. Systematic theoretical investigation of the zero-field splitting in Gd(III) complexes: Wave function and density functional approaches. J Chem Phys 2015; 142:034304. [DOI: 10.1063/1.4905559] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Shehryar Khan
- Department of Physics, Stockholm University, AlbaNova University Center, S-106 91 Stockholm, Sweden
| | | | - Danuta Kruk
- Faculty of Mathematics and Computer Science, University of Warmia and Mazury in Olsztyn, Sloneczna 54, Olsztyn PL-10710, Poland
| | - Jozef Kowalewski
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden
| | - Michael Odelius
- Department of Physics, Stockholm University, AlbaNova University Center, S-106 91 Stockholm, Sweden
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20
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Yang CT, Han J, Gu M, Liu J, Li Y, Huang Z, Yu HZ, Hu S, Wang X. Fluorescent recognition of uranyl ions by a phosphorylated cyclic peptide. Chem Commun (Camb) 2015; 51:11769-72. [DOI: 10.1039/c5cc04112k] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Fluorescent recognition of uranyl ions was achieved using a phosphorylated cyclic peptide, which can be used as a fluorescent sensor.
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Affiliation(s)
- Chu-Ting Yang
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Jun Han
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Mei Gu
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Jun Liu
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Yi Li
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Zeng Huang
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Hai-Zhu Yu
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials
- Anhui University
- Hefei
- P. R. China
| | - Sheng Hu
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Xiaolin Wang
- Institute of Nuclear Physics and Chemistry
- China Academy of Engineering Physics
- Mianyang
- P. R. China
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21
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Lebrun C, Starck M, Gathu V, Chenavier Y, Delangle P. Engineering Short Peptide Sequences for Uranyl Binding. Chemistry 2014; 20:16566-73. [DOI: 10.1002/chem.201404546] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Indexed: 01/16/2023]
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22
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Bonnet CS, Caillé F, Pallier A, Morfin JF, Petoud S, Suzenet F, Tóth É. Mechanistic studies of Gd3+-based MRI contrast agents for Zn2+ detection: towards rational design. Chemistry 2014; 20:10959-69. [PMID: 25116889 DOI: 10.1002/chem.201403043] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Indexed: 12/28/2022]
Abstract
A series of novel pyridine-based Gd(3+) complexes have been prepared and studied as potential MRI contrast agents for Zn(2+) detection. By independent assessment of molecular parameters affecting relaxivity, we could interpret the relaxivity changes observed upon Zn(2+) binding in terms of variations of the rotational motion.
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Affiliation(s)
- Célia S Bonnet
- Centre de Biophysique Moléculaire, CNRS, Rue Charles Sadron, 45071 Orléans (France).
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23
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De Cola C, Fiorillo G, Meli A, Aime S, Gianolio E, Izzo I, De Riccardis F. Gadolinium-binding cyclic hexapeptoids: synthesis and relaxometric properties. Org Biomol Chem 2014; 12:424-31. [DOI: 10.1039/c3ob42029a] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Cyclic hexapeptoids are able to efficiently bind Gd3+ions. Their thermodynamic stabilities have been assessed by1H-relaxometric investigations.
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Affiliation(s)
- Chiara De Cola
- Department of Chemistry and Biology
- University of Salerno
- Fisciano, Italy
| | - Gaetano Fiorillo
- Department of Chemistry and Biology
- University of Salerno
- Fisciano, Italy
| | - Alessandra Meli
- Department of Chemistry and Biology
- University of Salerno
- Fisciano, Italy
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences and Molecular Imaging Center
- University of Turin
- Turin, Italy
| | - Eliana Gianolio
- Department of Molecular Biotechnology and Health Sciences and Molecular Imaging Center
- University of Turin
- Turin, Italy
| | - Irene Izzo
- Department of Chemistry and Biology
- University of Salerno
- Fisciano, Italy
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24
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25
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Fragoso A, Delgado R, Iranzo O. Copper(II) coordination properties of decapeptides containing three His residues: the impact of cyclization and Asp residue coordination. Dalton Trans 2013; 42:6182-92. [PMID: 23529654 DOI: 10.1039/c3dt32384f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Two decapeptides containing three His and two Pro-Gly β-turn inducer units (C-Asn, cyclic) and three His and a single Pro-Gly unit (O-Asn, open) have been synthesized. A detailed potentiometric study showed that while O-Asn binds up to 3 equiv. of Cu(2+) ions, C-Asn only coordinates two before precipitation occurred. Nonetheless, at a 1 : 1 Cu(2+)/peptide ratio both peptides form a major [CuHL](3+) species and spectroscopic studies (UV-Vis, CD and EPR) revealed a very similar copper(ii) complex where the metal ion is coordinated solely by the imidazole rings of the His residues adopting a square planar or square pyramidal geometry. The corrected stability constants of the protonated species (log K(CuH(O-Asn)) = 8.17 and log K(CuH(C-Asn)) = 9.11) indicate that the cyclic peptide binds Cu(2+) with higher affinity and this value represents the highest value reported so far for this type of coordination. Additionally, the calculated value of the effective stability constant, K(eff), showed that C-Asn has a higher affinity for Cu(2+) at all pH values not only at a 1 : 1 ratio but even at a 2 : 1 ratio. The replacement of the asparagine residue by an aspartic amino acid increases the Cu(2+) affinity of the aspartic counterparts, C-Asp and O-Asp, which at a 1 : 1 Cu(2+)/peptide ratio also form a major species, [CuHL](2+) in these cases, with Cu(2+) coordinated to the three histidine residues and one aspartic residue. These data show how cyclization and coordination to the aspartic residue increase the binding strength and preclude the coordination of the amide nitrogen up to higher pH values, stabilizing therefore, the species where Cu(2+) is solely coordinated by the side chain functionalities.
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Affiliation(s)
- Ana Fragoso
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
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26
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Fragoso A, Lamosa P, Delgado R, Iranzo O. Harnessing the flexibility of peptidic scaffolds to control their copper(II)-coordination properties: a potentiometric and spectroscopic study. Chemistry 2013; 19:2076-88. [PMID: 23293061 DOI: 10.1002/chem.201203545] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Indexed: 02/02/2023]
Abstract
Designing small peptides that are capable of binding Cu(2+) ions mainly through the side-chain functionalities is a hard task because the amide nitrogen atoms strongly compete for Cu(2+) ion coordination. However, the design of such peptides is important for obtaining biomimetic small systems of metalloenyzmes as well as for the development of artificial systems. With this in mind, a cyclic decapeptide, C-Asp, which contained three His residues and one Asp residue, and its linear derivative, O-Asp, were synthesized. The C-Asp peptide has two Pro-Gly β-turn-inducer units and, as a result of cyclization, and as shown by CD spectroscopy, its backbone is constrained into a more defined conformation than O-Asp, which is linear and contains a single Pro-Gly unit. A detailed potentiometric, mass spectrometric, and spectroscopic study (UV/Vis, CD, and EPR spectroscopy) showed that at a 1:1 Cu(2+)/peptide ratio, both peptides formed a major [CuHL](2+) species in the pH range 5.0-7.5 (C-Asp) and 5.5-7.0 (O-Asp). The corrected stability constants of the protonated species (log K*(CuH(O-Asp))=9.28 and log K*(CuH(C-Asp))=10.79) indicate that the cyclic peptide binds Cu(2+) ions with higher affinity. In addition, the calculated value of K(eff) shows that this higher affinity for Cu(2+) ions prevails at all pH values, not only for a 1:1 ratio but even for a 2:1 ratio. The spectroscopic data of both [CuHL](2+) species are consistent with the exclusive coordination of Cu(2+) ions by the side-chain functionalities of the three His residues and the Asp residue in a square-planar or square-pyramidal geometry. Nonetheless, although these data show that, upon metal coordination, both peptides adopt a similar fold, the larger conformational constraints that are present in the cyclic scaffold results in different behaviour for both [CuHL](2+) species. CD and NMR analysis revealed the formation of a more rigid structure and a slower Cu(2+)-exchange rate for [CuH(C-Asp)](2+) compared to [CuH(O-Asp](2+). This detailed comparative study shows that cyclization has a remarkable effect on the Cu(2+)-coordination properties of the C-Asp peptide, which binds Cu(2+) ions with higher affinity at all pH values, stabilizes the [CuHL](2+) species in a wider pH range, and has a slower Cu(2+)-exchange rate compared to O-Asp.
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Affiliation(s)
- Ana Fragoso
- Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
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27
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Ancel L, Gateau C, Lebrun C, Delangle P. DNA Sensing by a Eu-Binding Peptide Containing a Proflavine Unit. Inorg Chem 2013; 52:552-4. [DOI: 10.1021/ic302456q] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Laetitia Ancel
- INAC, Service de
Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble cedex,
France
| | - Christelle Gateau
- INAC, Service de
Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble cedex,
France
| | - Colette Lebrun
- INAC, Service de
Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble cedex,
France
| | - Pascale Delangle
- INAC, Service de
Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble cedex,
France
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28
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Liang G, Ye D, Zhang X, Dong F, Chen H, Zhang S, Li J, Shen X, Kong J. One-pot synthesis of Gd3+-functionalized gold nanoclusters for dual model (fluorescence/magnetic resonance) imaging. J Mater Chem B 2013; 1:3545-3552. [DOI: 10.1039/c3tb20440e] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Niedźwiecka A, Cisnetti F, Lebrun C, Delangle P. Femtomolar Ln(III) Affinity in Peptide-Based Ligands Containing Unnatural Chelating Amino Acids. Inorg Chem 2012; 51:5458-64. [DOI: 10.1021/ic300448y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Agnieszka Niedźwiecka
- Service de Chimie Inorganique et Biologique (UMR_E
3 CEA UJF), INAC, Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble Cedex,
France
| | - Federico Cisnetti
- Service de Chimie Inorganique et Biologique (UMR_E
3 CEA UJF), INAC, Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble Cedex,
France
| | - Colette Lebrun
- Service de Chimie Inorganique et Biologique (UMR_E
3 CEA UJF), INAC, Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble Cedex,
France
| | - Pascale Delangle
- Service de Chimie Inorganique et Biologique (UMR_E
3 CEA UJF), INAC, Commissariat à
l′Energie Atomique, 17 rue des martyrs, 38054 Grenoble Cedex,
France
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30
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Fries PH. Computing Electronic Spin Relaxation for Gd3+-Based Contrast Agents - Practical Implementation. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101430] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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31
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Delangle P, Mintz E. Chelation therapy in Wilson's disease: from D-penicillamine to the design of selective bioinspired intracellular Cu(I) chelators. Dalton Trans 2012; 41:6359-70. [PMID: 22327203 DOI: 10.1039/c2dt12188c] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Wilson's disease is an orphan disease due to copper homeostasis dysfunction. Mutations of the ATP7B gene induces an impaired functioning of a Cu-ATPase, impaired Cu detoxification in the liver and copper overload in the body. Indeed, even though copper is an essential element, which is used as cofactor by many enzymes playing vital roles, it becomes toxic when in excess as it promotes cytotoxic reactions leading to oxidative stress. In this perspective, human copper homeostasis is first described in order to explain the mechanisms promoting copper overload in Wilson's disease. We will see that the liver is the main organ for copper distribution and detoxification in the body. Nowadays this disease is treated life-long by systemic chelation therapy, which is not satisfactory in many cases. Therefore the design of more selective and efficient drugs is of great interest. A strategy to design more specific chelators to treat localized copper accumulation in the liver will then be presented. In particular we will show how bioinorganic chemistry may help in the design of such novel chelators by taking inspiration from the biological copper cell transporters.
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Affiliation(s)
- Pascale Delangle
- INAC, Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF), Commissariat à l'Energie Atomique, Grenoble, France.
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32
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Niedźwiecka A, Cisnetti F, Lebrun C, Gateau C, Delangle P. Lanthanide-binding peptides with two pendant aminodiacetate arms: Impact of the sequence on chelation. Dalton Trans 2012; 41:3239-47. [DOI: 10.1039/c2dt11686c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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33
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Bonnet CS, Devocelle M, Gunnlaugsson T. Luminescent lanthanide-binding peptides: sensitising the excited states of Eu(iii) and Tb(iii) with a 1,8-naphthalimide-based antenna. Org Biomol Chem 2012; 10:126-33. [DOI: 10.1039/c1ob06567j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Tallec G, Fries PH, Imbert D, Mazzanti M. High Relaxivity and Stability of a Hydroxyquinolinate-Based Tripodal Monoaquagadolinium Complex for Use as a Bimodal MRI/Optical Imaging Agent. Inorg Chem 2011; 50:7943-5. [DOI: 10.1021/ic2012793] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gaylord Tallec
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, SCIB, UMR-E 3 CEA / UJF-Grenoble 1, INAC, Grenoble, F-38054, France
| | - Pascal H. Fries
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, SCIB, UMR-E 3 CEA / UJF-Grenoble 1, INAC, Grenoble, F-38054, France
| | - Daniel Imbert
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, SCIB, UMR-E 3 CEA / UJF-Grenoble 1, INAC, Grenoble, F-38054, France
| | - Marinella Mazzanti
- Laboratoire de Reconnaissance Ionique et Chimie de Coordination, SCIB, UMR-E 3 CEA / UJF-Grenoble 1, INAC, Grenoble, F-38054, France
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35
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Savage AC, Pikramenou Z. Peptide coated gold nanoparticles that bind lanthanide ions. Chem Commun (Camb) 2011; 47:6431-3. [DOI: 10.1039/c1cc11477h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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am Ende CW, Meng HY, Ye M, Pandey AK, Zondlo NJ. Design of lanthanide fingers: compact lanthanide-binding metalloproteins. Chembiochem 2010; 11:1738-47. [PMID: 20623571 DOI: 10.1002/cbic.201000056] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lanthanides have interesting chemical properties; these include luminescent, magnetic, and catalytic functions. Toward the development of proteins incorporating novel functions, we have designed a new lanthanide-binding motif, lanthanide fingers. These were designed based on the Zif268 zinc finger, which exhibits a beta beta alpha structural motif. Lanthanide fingers utilize an Asp(2)Glu(2) metal-coordination environment to bind lanthanides through a tetracarboxylate peptide ligand. The iterative design of a general lanthanide-binding peptide incorporated the following key elements: 1) residues with high alpha-helix and beta-sheet propensities in the respective secondary structures; 2) an optimized big box alpha-helix N-cap; 3) a Schellman alpha-helix C-cap motif; and 4) an optional D-Pro-Ser type II' beta-turn in the beta-hairpin. The peptides were characterized for lanthanide binding by circular dichroism (CD), NMR, and fluorescence spectroscopy. In all instances, stabilization of the peptide secondary structures resulted in an increase in metal affinity. The optimized protein design was a 25-residue peptide that was a general lanthanide-binding motif; this binds all lanthanides examined in a competitive aqueous environment, with a dissociation constant of 9.3 microM for binding Er(3+). CD spectra of the peptide-lanthanide complexes are similar to those of zinc fingers and other beta beta alpha proteins. Metal binding involves residues from the N-terminal beta-hairpin and the C terminal alpha-helical segments of the peptide. NMR data indicated that metal binding induced a global change in the peptide structure. The D-Pro-Ser type II' beta-turn motif could be replaced by Thr-Ile to generate genetically encodable lanthanide fingers. Replacement of the central Phe with Trp generated genetically encodable lanthanide fingers that exhibited terbium luminescence greater than that of an EF-hand peptide.
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Affiliation(s)
- Christopher W am Ende
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
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37
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Pujol AM, Cuillel M, Renaudet O, Lebrun C, Charbonnier P, Cassio D, Gateau C, Dumy P, Mintz E, Delangle P. Hepatocyte targeting and intracellular copper chelation by a thiol-containing glycocyclopeptide. J Am Chem Soc 2010; 133:286-96. [PMID: 21155609 DOI: 10.1021/ja106206z] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal overload plays an important role in several diseases or intoxications, like in Wilson's disease, a major genetic disorder of copper metabolism in humans. To efficiently and selectively decrease copper concentration in the liver that is highly damaged, chelators should be targeted at the hepatocytes. In the present work, we synthesized a molecule able to both lower intracellular copper, namely Cu(I), and target hepatocytes, combining within the same structure a chelating unit and a carbohydrate recognition element. A cyclodecapeptide scaffold displaying a controlled conformation with two independent faces was chosen to introduce both units. One face displays a cluster of carbohydrates to ensure an efficient recognition of the asialoglycoprotein receptors, expressed on the surface of hepatocytes. The second face is devoted to metal ion complexation thanks to the thiolate functions of two cysteine side-chains. To obtain a chelator that is active only once inside the cells, the two thiol functions were oxidized in a disulfide bridge to afford the glycopeptide P(3). Two simple cyclodecapeptides modeling the reduced and complexing form of P(3) in cells proved a high affinity for Cu(I) and a high selectivity with respect to Zn(II). As expected, P(3) becomes an efficient Cu(I) chelator in the presence of glutathione that mimics the intracellular reducing environment. Finally, cellular uptake and ability to lower intracellular copper were demonstrated in hepatic cell lines, in particular in WIF-B9, making P(3) a good candidate to fight copper overload in the liver.
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Affiliation(s)
- Anaïs M Pujol
- INAC, Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF, FRE CNRS 3200), Commissariat à l'Energie Atomique, 17 Rue des Martyrs, 38054 Grenoble Cedex, France
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38
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Bonnet CS, Fries PH, Crouzy S, Delangle P. Outer-Sphere Investigation of MRI Relaxation Contrast Agents. Example of a Cyclodecapeptide Gadolinium Complex with Second-Sphere Water. J Phys Chem B 2010; 114:8770-81. [DOI: 10.1021/jp101443v] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Célia S. Bonnet
- CEA, INAC, Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF, FRE 3200 CNRS), 38054 Grenoble, France and CEA, iRTSV, Laboratoire Chimie et Biologie des Métaux (UMR 5249 CEA CNRS UJF), F-38054 Grenoble, France
| | - Pascal H. Fries
- CEA, INAC, Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF, FRE 3200 CNRS), 38054 Grenoble, France and CEA, iRTSV, Laboratoire Chimie et Biologie des Métaux (UMR 5249 CEA CNRS UJF), F-38054 Grenoble, France
| | - Serge Crouzy
- CEA, INAC, Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF, FRE 3200 CNRS), 38054 Grenoble, France and CEA, iRTSV, Laboratoire Chimie et Biologie des Métaux (UMR 5249 CEA CNRS UJF), F-38054 Grenoble, France
| | - Pascale Delangle
- CEA, INAC, Service de Chimie Inorganique et Biologique (UMR_E 3 CEA UJF, FRE 3200 CNRS), 38054 Grenoble, France and CEA, iRTSV, Laboratoire Chimie et Biologie des Métaux (UMR 5249 CEA CNRS UJF), F-38054 Grenoble, France
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Fries PH. Two-particle random walk simulation of outer-sphere nuclear relaxation. J Chem Phys 2010; 132:224103. [DOI: 10.1063/1.3429221] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Towards highly efficient, intelligent and bimodal imaging probes: Novel approaches provided by lanthanide coordination chemistry. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.03.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Fries PH, Imbert D, Melchior A. Determination of outer-sphere dipolar time correlation functions from high-field NMR measurements. Example of a Gd3+ complex in a viscous solvent. J Chem Phys 2010; 132:044502. [DOI: 10.1063/1.3291439] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cisnetti F, Lebrun C, Delangle P. A lanthanide binding peptide with short chelating side-chains: structural impact of the backbone coordination. Dalton Trans 2010; 39:3560-2. [DOI: 10.1039/c003060k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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