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Pothayee N, Sail D, Dodd S, Swenson RE, Koretsky AP. Multivalent Gd-DOTA Decorated Oligopeptide as Sensitive MRI Molecular Probes for In Vivo Imaging of Brain Connectivity. ACS Chem Neurosci 2022; 13:2674-2680. [PMID: 36040317 DOI: 10.1021/acschemneuro.2c00236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
One of the most important goals of brain imaging is to define the anatomical connections within the brain. In addition to revealing normal circuitry, studies of neural connections and neuronal transport can show rewiring and degeneration following brain injury and diseases. In this work, a highly sensitive magnetic resonance imaging (MRI)-visible neural tracer that can be used to visualize brain connectivity in vivo is developed. It is based on an oligopeptide with gadolinium chelates appended to the peptide backbone. This peptide construct is a sensitive MRI contrast agent that was conjugated to the classical neurotracer, Cholera-toxin Subunit-B. Injection of this probe enabled it to be used to trace neural connections in vivo. This complements other MRI tracing techniques such as diffusion tensor imaging and manganese-enhanced MRI for neural tracing.
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Affiliation(s)
- Nikorn Pothayee
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Deepak Sail
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Rockville, Maryland 20850, United States
| | - Stephen Dodd
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Rolf E Swenson
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Rockville, Maryland 20850, United States
| | - Alan P Koretsky
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892, United States
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Travagin F, Lattuada L, Giovenzana GB. AAZTA: The rise of mesocyclic chelating agents for metal coordination in medicine. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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3
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Kock FVC, Forgács A, Guidolin N, Stefania R, Vágner A, Gianolio E, Aime S, Baranyai Z. [Gd(AAZTA)] - Derivatives with n-Alkyl Acid Side Chains Show Improved Properties for Their Application as MRI Contrast Agents*. Chemistry 2020; 27:1849-1859. [PMID: 33184913 DOI: 10.1002/chem.202004479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/03/2020] [Indexed: 12/25/2022]
Abstract
Herein, the synthesis and an extensive characterization of two novel Gd(AAZTA) (AAZTA=6-amino-6-methylperhydro-1,4-diazepine tetra acetic acid) derivatives functionalized with short (C2 and C4 ) n-alkyl acid functions are reported. The carboxylate functionality is the site for further conjugations for the design of more specific contrast agents (CAs). Interestingly, it has been found that the synthesized complexes display enhanced properties for use as MRI contrast agents on their own. The stability constants determined by using potentiometric titration and UV/Vis spectrophotometry were slightly higher than the one reported for the parent Gd(AAZTA) complex. This observation might be accounted for by the larger sigma-electron donation of the acyl substituents with respect to the one provided by the methyl group in the parent complex. As far as concerns the kinetic stability, transmetallation experiments with endogenous ions (e.g. Cu2+ ) implied that the Gd3+ ions present in these Gd(AAZTA) derivatives show somewhat smaller susceptibility to chemical exchange towards these ions at 25 °C, close to the physiological condition. The 1 H NMR spectra of the complexes with EuIII and YbIII displayed a set of signals consistent with half the number of methylene protons present on each ligand. The number of resonances was invariant over a large range of temperatures, suggesting the occurrence of a fast interconversion between structural isomers. The relaxivity values (298 K, 20 MHz) were consistent with q=2 being equal to 8.8 mm-1 s-1 for the C2 derivative and 9.4 mm-1 s-1 for the C4 one, that is, sensibly larger than the one reported for Gd(AAZTA) (7.1 mm-1 s-1 ). Variable-temperature (VT)-T2 17 O NMR measurements showed, for both complexes, the presence of two populations of coordinated water molecules, one in fast and one in slow exchange with the bulk water. As the high-resolution 1 H NMR spectra of the analogs with EuIII and YbIII did not show the occurrence of distinct isomers (as frequently observed in other macrocyclic lanthanide(III)-containing complexes), we surmised the presence of two fast-interconverting isomers in solution. The analysis of the 17 O NMR VT-T2 profiles versus temperature allowed their relative molar fraction to be established as 35 % for the isomer with the fast exchanging water and 65 % for the isomer with the water molecules in slower exchange. Finally, 1 H NMRD profiles over an extended range of applied magnetic field strengths have been satisfactory fitted on the basis of the occurrence of the two interconverting species.
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Affiliation(s)
- Flávio Vinicius Crizóstomo Kock
- São Carlos Institute of Chemistry, University of São Paulo, Avenida Trabalhador São Carlense 400, 13566-590, São Paulo, Brazil.,Department of Molecular Biotechnologies and Health Science, University of Turin, Via Nizza 52, 10125, Turin, Italy
| | - Attila Forgács
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, 4010, Debrecen, Hungary.,MTA-DE Redox and Homogeneous Catalytic Reaction Mechanisms, Research Group, Egyetem tér 1, Debrecen, 4032, Hungary
| | - Nicol Guidolin
- Bracco Imaging SpA, Bracco Research Center, Via Ribes 5, 10010, Colleretto Giacosa (TO), Italy
| | - Rachele Stefania
- Department of Molecular Biotechnologies and Health Science, University of Turin, Via Nizza 52, 10125, Turin, Italy
| | - Adrienn Vágner
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, 4010, Debrecen, Hungary
| | - Eliana Gianolio
- Department of Molecular Biotechnologies and Health Science, University of Turin, Via Nizza 52, 10125, Turin, Italy
| | - Silvio Aime
- Department of Molecular Biotechnologies and Health Science, University of Turin, Via Nizza 52, 10125, Turin, Italy
| | - Zsolt Baranyai
- Bracco Imaging SpA, Bracco Research Center, Via Ribes 5, 10010, Colleretto Giacosa (TO), Italy
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Eberle AL, Zeidler D. Multi-Beam Scanning Electron Microscopy for High-Throughput Imaging in Connectomics Research. Front Neuroanat 2018; 12:112. [PMID: 30618653 PMCID: PMC6297274 DOI: 10.3389/fnana.2018.00112] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 11/23/2018] [Indexed: 02/06/2023] Open
Abstract
Major progress has been achieved in recent years in three-dimensional microscopy techniques. This applies to the life sciences in general, but specifically the neuroscientific field has been a main driver for developments regarding volume imaging. In particular, scanning electron microscopy offers new insights into the organization of cells and tissues by volume imaging methods, such as serial section array tomography, serial block-face imaging or focused ion beam tomography. However, most of these techniques are restricted to relatively small tissue volumes due to the limited acquisition throughput of most standard imaging techniques. Recently, a novel multi-beam scanning electron microscope technology optimized to the imaging of large sample areas has been developed. Complemented by the commercialization of automated sample preparation robots, the mapping of larger, cubic millimeter range tissue volumes at high-resolution is now within reach. This Mini Review will provide a brief overview of the various approaches to electron microscopic volume imaging, with an emphasis on serial section array tomography and multi-beam scanning electron microscopic imaging.
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5
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Application of Gd(III) complexes for magnetic resonance imaging and the improvement of relaxivities via nanocrystallization. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Giovenzana GB, Lattuada L, Negri R. Recent Advances in Bifunctional Paramagnetic Chelates for MRI. Isr J Chem 2017. [DOI: 10.1002/ijch.201700028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Giovanni B. Giovenzana
- Dipartimento di Scienze del Farmaco; Università del Piemonte Orientale “A. Avogadro”; L.go Donegani 2/3 I-28100 Novara Italy
| | - Luciano Lattuada
- Bracco Imaging SpA, Bracco Research Centre; Via Ribes 5 I-10010 Colleretto Giacosa TO, Italy
| | - Roberto Negri
- Dipartimento di Scienze del Farmaco; Università del Piemonte Orientale “A. Avogadro”; L.go Donegani 2/3 I-28100 Novara Italy
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Vágner A, D'Alessandria C, Gambino G, Schwaiger M, Aime S, Maiocchi A, Tóth I, Baranyai Z, Tei L. A rigidified AAZTA-like ligand as efficient chelator for68Ga radiopharmaceuticals. ChemistrySelect 2016. [DOI: 10.1002/slct.201500051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Adrienn Vágner
- Department of Inorganic and Analytical Chemistry; University of Debrecen; H-4032 Debrecen Egyetem tér 1. Hungary
| | - Calogero D'Alessandria
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar; Technische Universität München; Ismaningerstr. 22 81675 Munich Germany
| | - Giuseppe Gambino
- Dipartimento di Scienze e Innovazione Tecnologica (DiSIT); Università degli Studi del Piemonte Orientale “A. Avogadro”; Viale T. Michel 11 I-15121 Alessandria Italy
| | - Markus Schwaiger
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar; Technische Universität München; Ismaningerstr. 22 81675 Munich Germany
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences; Molecular Imaging Center, University of Torino; Via Nizza 52 I-10126 Torino Italy
| | - Alessandro Maiocchi
- Centro Ricerche Bracco, Bracco Imaging Spa; Via Ribes 5 I-10010 Colleretto Giacosa Italy
| | - Imre Tóth
- Department of Inorganic and Analytical Chemistry; University of Debrecen; H-4032 Debrecen Egyetem tér 1. Hungary
| | - Zsolt Baranyai
- Department of Inorganic and Analytical Chemistry; University of Debrecen; H-4032 Debrecen Egyetem tér 1. Hungary
| | - Lorenzo Tei
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar; Technische Universität München; Ismaningerstr. 22 81675 Munich Germany
- Dipartimento di Scienze e Innovazione Tecnologica (DiSIT); Università degli Studi del Piemonte Orientale “A. Avogadro”; Viale T. Michel 11 I-15121 Alessandria Italy
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8
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Synthesis of phosphonic analogues of AAZTA†AAZTA=6-Amino-6-methylperhydro-1,4-diazepine-N,N′,N″,N″-tetraacetic acid.† and relaxometric evaluation of the corresponding Gd(III) complexes as potential MRI contrast agents. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.118] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Guanci C, Giovenzana G, Lattuada L, Platas-Iglesias C, Charbonnière LJ. AMPED: a new platform for picolinate based luminescent lanthanide chelates. Dalton Trans 2015; 44:7654-61. [DOI: 10.1039/c5dt00077g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anchoring three picolinate units on a AMPED scaffold affords a strongly pre-organized ligand for the formation of luminescent lanthanide complexes.
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Affiliation(s)
- Claudia Guanci
- Dipartimento di Scienze del Farmaco
- Università del Piemonte Orientale “A. Avogadro”
- 28100 Novara
- Italy
| | - Giovanni Giovenzana
- Dipartimento di Scienze del Farmaco
- Università del Piemonte Orientale “A. Avogadro”
- 28100 Novara
- Italy
| | - Luciano Lattuada
- Bracco Imaging spa
- Bracco Research Centre
- 10010 Colleretto Giacosa
- Italy
| | | | - Loïc J. Charbonnière
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse
- Institut Pluridisciplinaire Hubert Curien (IPHC
- UMR 7178
- CNRS/Université de Strasbourg)
- ECPM
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10
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Verwilst P, Park S, Yoon B, Kim JS. Recent advances in Gd-chelate based bimodal optical/MRI contrast agents. Chem Soc Rev 2015; 44:1791-806. [DOI: 10.1039/c4cs00336e] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Recent developments in the field of bimodal MRI/optical contrast agents, based on Gd3+-chelates are presented.
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Affiliation(s)
- Peter Verwilst
- Department of Chemistry
- Korea University
- Seoul 136-701
- Korea
| | - Soyeon Park
- Department of Chemistry
- Korea University
- Seoul 136-701
- Korea
| | - Byungkwon Yoon
- Department of Chemistry
- Korea University
- Seoul 136-701
- Korea
| | - Jong Seung Kim
- Department of Chemistry
- Korea University
- Seoul 136-701
- Korea
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11
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Minazzi P, Lattuada L, Menegotto IG, Giovenzana GB. An enzymatic approach to bifunctional chelating agents. Org Biomol Chem 2014; 12:6915-21. [DOI: 10.1039/c4ob00810c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Three novel BFCAs are obtained through an original protocol involving an enzymatic hydrolysis as the key step.
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Affiliation(s)
- Paolo Minazzi
- Dipartimento di Scienze del Farmaco
- Università degli Studi del Piemonte Orientale “A. Avogadro”
- 28100 Novara, Italy
- CAGE Chemicals srl
- 28100 Novara, Italy
| | - Luciano Lattuada
- Bracco Imaging SpA
- Bracco Research Centre
- 10010 Colleretto Giacosa (TO), Italy
| | - Ivan G. Menegotto
- Dipartimento di Scienze del Farmaco
- Università degli Studi del Piemonte Orientale “A. Avogadro”
- 28100 Novara, Italy
| | - Giovanni B. Giovenzana
- Dipartimento di Scienze del Farmaco
- Università degli Studi del Piemonte Orientale “A. Avogadro”
- 28100 Novara, Italy
- CAGE Chemicals srl
- 28100 Novara, Italy
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12
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Artali R, Bombieri G, Giovenzana G, Galli M, Lattuada L, Meneghetti F. Preparation, crystallographic and theoretical study on a bifunctional Gd-AAZTA derivative as potential MRI contrast agent precursor. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Luo J, Li WS, Xu P, Zhang LY, Chen ZN. Zn2+ Responsive Bimodal Magnetic Resonance Imaging and Fluorescent Imaging Probe Based on a Gadolinium(III) Complex. Inorg Chem 2012; 51:9508-16. [PMID: 22880548 DOI: 10.1021/ic301308z] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jian Luo
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Wei-Sheng Li
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Peng Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Li-Yi Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
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