1
|
Keot N, Sarma M. Unraveling the Stability and Magnetic Properties of Bis-Hydrated Mn(II) Complexes via Tailored Ligand Design. J Phys Chem A 2024. [PMID: 39292621 DOI: 10.1021/acs.jpca.4c03053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/20/2024]
Abstract
Exploring the electronic structure and dynamic behavior of Mn(II) complexes reveals fascinating magnetic properties and prospective biomedical applications. In this study, we investigate the solvent phase dynamics of heptacoordinated Mn(II) complexes through ab initio molecular dynamics simulations and density functional theory (DFT) calculations with effectively varying temperatures. We observed that the complex with high stability ([Mn(pmpa)(H2O)2]) remains relatively rigid as the temperature increases to 90 °C, with only a minor change in its radial distribution functions (RDFs), compared to the RDF peaks at 25 °C. To elucidate the impact of halogens on the magnetic anisotropy of seven-coordinated Mn(II) complexes, we performed both DFT and multireference calculations. This shows that the zero-field splitting (ZFS) parameter D follows the order D(I)> D(Br)> D(Cl). We observed a significant increase in the D-value following the substitution of soft Se-donors in the equatorial position and heavier halogens in the axial position. The D-value of halogen derivatives of Se-analogues varies in the order of D(Cl) < D(I) < D(Br), deviating from the regular spectrochemical series with the discrepancy between the covalency of the Mn(II)-Se bond and the ligand field strength. We anticipate that this study will enhance our understanding of the solvent phase dynamics and structural aspects of ZFS in various Mn(II) complexes with different electronic environments.
Collapse
Affiliation(s)
- Niharika Keot
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Manabendra Sarma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| |
Collapse
|
2
|
Roy S, Gu J, Xia W, Mi C, Guo B. Advancements in manganese complex-based MRI agents: Innovations, design strategies, and future directions. Drug Discov Today 2024; 29:104101. [PMID: 39019428 DOI: 10.1016/j.drudis.2024.104101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 07/02/2024] [Accepted: 07/11/2024] [Indexed: 07/19/2024]
Abstract
This review focuses on the advancements in manganese (Mn) complex-based magnetic resonance imaging (MRI) agents for imaging different diseases. Here we emphasize the unique redox properties of Mn to deliver innovative MRI contrast agents, including small molecules, nanoparticles (NPs), metal-organic frameworks (MOFs), and polymer hybrids. Aspects of their rational design have been discussed, including size dependence, morphology tuning, surface property enhancement, etc., while also discussing the existing challenges and potential solutions. The present work will inspire and motivate scientists to emphasize MRI-guided applications and bring clinical success in the coming years.
Collapse
Affiliation(s)
- Shubham Roy
- School of Science, Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application, Harbin Institute of Technology, Shenzhen 518055 China
| | - Jingsi Gu
- Education Center and Experiments and Innovations, Harbin Institute of Technology, Shenzhen 518055, China
| | - Wujiong Xia
- School of Science, Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application, Harbin Institute of Technology, Shenzhen 518055 China
| | - Chao Mi
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, China; Shenzhen Light Life Technology Co., Ltd., Shenzhen 518107, China; School of Advanced Engineering, Great Bay Institute for Advanced Study, Great Bay University, Dongguan, Guangdong 523000, China.
| | - Bing Guo
- School of Science, Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application, Harbin Institute of Technology, Shenzhen 518055 China.
| |
Collapse
|
3
|
Nucera A, Macchia ML, Baranyai Z, Carniato F, Tei L, Ravera M, Botta M. Comprehensive Investigation of [Fe(EDTA)] --Functionalized Derivatives and their Supramolecular Adducts with Human Serum Albumin. Inorg Chem 2024; 63:12992-13004. [PMID: 38949627 DOI: 10.1021/acs.inorgchem.4c01715] [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: 07/02/2024]
Abstract
In recent years, the coordination chemistry of high-spin Fe(III) complexes has increasingly attracted interest due to their potential as effective alternatives to Gd(III)-based MRI contrast agents. This paper discusses the results from our study on Fe(III) complexes with two EDTA derivatives, each modified with either one (EDTA-BOM) or two (EDTA-BOM2) benzyloxymethylene (BOM) groups on the acetic arm(s). These pendant hydrophobic groups enable the complexes to form noncovalent adducts with human serum albumin (HSA), leading to an observed increase in relaxivity due to the reduction in molecular tumbling. Our research involved detailed relaxometric measurements and analyses of both 1H and 17O NMR data at varying temperatures and magnetic field strengths, which is conducted with and without the presence of a protein. A significant finding of this study is the effect of electronic relaxation time on the effectiveness of [Fe(EDTA-BOM)(H2O)]- and [Fe(EDTA-BOM2)(H2O)]- as diagnostic MRI probes. By integrating these relaxometric results with comprehensive thermodynamic, kinetic, and electrochemical data, we have thoroughly characterized how structural modifications to the EDTA base ligand influence the properties of the complexes.
Collapse
Affiliation(s)
- Alessandro Nucera
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Maria Ludovica Macchia
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Zsolt Baranyai
- Bracco Imaging SpA, CRB Trieste, AREA Science Park, Basovizza, TS 34149, Italy
| | - Fabio Carniato
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
- Magnetic Resonance Platform (PRISMA-UPO), Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Lorenzo Tei
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Mauro Ravera
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
- Magnetic Resonance Platform (PRISMA-UPO), Università del Piemonte Orientale, Viale Teresa Michel 11, Alessandria 15121, Italy
| |
Collapse
|
4
|
Harriswangler C, Omweri JM, Saini S, Valencia L, Esteban-Gómez D, Ranga M, Guidolin N, Baranyai Z, Lapi SE, Platas-Iglesias C. Improving the In Vivo Stability of [ 52Mn]Mn(II) Complexes with 18-Membered Macrocyclic Chelators for PET Imaging. J Med Chem 2024; 67:11242-11253. [PMID: 38935616 PMCID: PMC11247486 DOI: 10.1021/acs.jmedchem.4c00812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
We report the [natMn/52Mn]Mn(II) complexes of the macrocyclic chelators PYAN [3,6,10,13-tetraaza-1,8(2,6)-dipyridinacyclotetradecaphane] and CHXPYAN [(41R,42R,101R,102R)-3,5,9,11-tetraaza-1,7(2,6)-dipyridina-4,10(1,2)-dicyclohexanacyclododecaphane]. The X-ray crystal structures of Mn-PYAN and Mn-CHXPYAN evidence distorted octahedral geometries through coordination of the nitrogen atoms of the macrocycles. Cyclic voltammetry studies evidence reversible processes due to the Mn(II)/Mn(III) pair, indicating that the complexes are resistant to oxidation. CHXPYAN forms a more thermodynamically stable and kinetically inert Mn(II) complex than PYAN. Radiochemical studies with the radioactive isotope manganese-52 (52Mn, t1/2 = 5.6 days) evidenced better radiochemical yields for CHXPYAN than for PYAN. Both [52Mn]Mn(II) complexes remained stable in mouse and human serum, so in vivo stability studies were carried out. Positron emission tomography/computed tomography scans and biodistribution assays indicated that [52Mn]Mn-PYAN has a distribution pattern similar to that of [52Mn]MnCl2, showing persistent radioactivity accumulation in the kidneys. Conversely, [52Mn]Mn-CHXPYAN remained stable in vivo, clearing quickly from the liver and kidneys.
Collapse
Affiliation(s)
- Charlene Harriswangler
- Universidade da Coruña, Centro Interdisciplinar de Química e Bioloxía (CICA) and Departamento de Química, Facultade de Ciencias, A Coruña 15071, Galicia, Spain
| | - James M Omweri
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama 35205, United States
- Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States
| | - Shefali Saini
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama 35205, United States
- Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States
| | - Laura Valencia
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende 36310, Pontevedra, Spain
| | - David Esteban-Gómez
- Universidade da Coruña, Centro Interdisciplinar de Química e Bioloxía (CICA) and Departamento de Química, Facultade de Ciencias, A Coruña 15071, Galicia, Spain
| | - Madalina Ranga
- Bracco Imaging SpA, CRB Trieste, AREA Science Park, ed. Q─S.S. 14 Km 163,5, 34149 Basovizza, TS, Italy
| | - Nicol Guidolin
- Bracco Imaging SpA, CRB Trieste, AREA Science Park, ed. Q─S.S. 14 Km 163,5, 34149 Basovizza, TS, Italy
| | - Zsolt Baranyai
- Bracco Imaging SpA, CRB Trieste, AREA Science Park, ed. Q─S.S. 14 Km 163,5, 34149 Basovizza, TS, Italy
| | - Suzanne E Lapi
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama 35205, United States
- Department of Radiology, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States
| | - Carlos Platas-Iglesias
- Universidade da Coruña, Centro Interdisciplinar de Química e Bioloxía (CICA) and Departamento de Química, Facultade de Ciencias, A Coruña 15071, Galicia, Spain
| |
Collapse
|
5
|
He L, Wang H, Zeng Z, Zhong L, Tang Q, Yu J, Tian J, Liu T, Zhu J. Rigid Fe(III) Chelate with Phosphonate Pendants: A Stable and Effective Extracellular MRI Contrast Agent. J Med Chem 2024; 67:8630-8641. [PMID: 38747630 DOI: 10.1021/acs.jmedchem.3c02338] [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: 06/14/2024]
Abstract
A novel Fe(III) complex, Fe-tBPCDTA, was synthesized and explored as a potential contrast agent for MRI. Compared to established agents like Fe-EDTA and Fe-tCDTA, Fe-tBPCDTA exhibited moderate relaxivity (r1 = 1.17 s-1·mmol-1) due to its enhanced second-sphere mechanism. It also displayed improved kinetic inertness, lower cytotoxicity, and enhanced redox stability. In vivo studies demonstrated its function as an extracellular fluid agent, providing tumor contrast comparable to that of Gd-DTPA at a higher dosage. Complete renal clearance occurred within 24 h. These findings suggest Fe-tBPCDTA as a promising candidate for further development as a safe and effective extracellular MRI contrast agent.
Collapse
Affiliation(s)
- Ling He
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
- School of Basic Medical Sciences and Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Haiyu Wang
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
- School of Basic Medical Sciences and Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Zuhua Zeng
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
- School of Pharmacy, North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Lei Zhong
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Qingxuan Tang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Junlai Yu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jia Tian
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Tianwei Liu
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
| | - Jiang Zhu
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan, China
| |
Collapse
|
6
|
Martinelli J, Romano E, Laczovics A, Horváth D, Grattoni E, Baranyai Z, Tei L. Improving the Stability and Kinetic Inertness of Mn(II) Complexes by Increasing the Bridge Length in Bicyclic CDTA-Like Ligands. Chemistry 2024; 30:e202400570. [PMID: 38597334 DOI: 10.1002/chem.202400570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/08/2024] [Accepted: 04/10/2024] [Indexed: 04/11/2024]
Abstract
Kinetic inertness of Mn(II)-based MRI contrast agents can be improved by increasing the rigidity of the polydentate ligand that tightly coordinate the metal ion. Taking inspiration from the remarkable increase in kinetic inertness of [Mn(CDTA)]2- compared to [Mn(EDTA)]2- due to the cyclohexyl backbone rigidity, we devised that bicyclic ligands would further improve the kinetic inertness of the Mn(II) complexes. The length of the alkyl bridge on the cyclohexane ring was varied from methylene (BCH-DTA), ethylene (BCO-DTA) to propylene (BCN-DTA) to evaluate the influence of the different trans-diaminotetraacetate ligands on relaxometric, thermodynamic and kinetic properties of the Mn(II) complexes. 1H and 17O NMR relaxometric studies showed a slight increase in relaxivity and a faster water exchange rate in these Mn(II)-complexes with respect to [Mn(CDTA)]2-. Solution studies revealed that the conditional stability (pMn) and dissociation half-life (t1/2) at pH 7.4 follow the order [Mn(BCH-DTA)]2-<[Mn(BCO-DTA)]2-<[Mn(BCN-DTA)]2- highlighting the effect of the bridge length on the overall stability of the Mn(II) complexes. Remarkably, [Mn(BCN-DTA)]2- shows an improved pMn value and a 7-times higher kinetic inertness than [Mn(CDTA)]2-. NMR studies on the Zn(II) analogues confirm the rigidity of the bicyclic complexes with an isomerization process at >313 K for the smaller bridged complex [Zn(BCH-DTA)]2-.
Collapse
Affiliation(s)
- Jonathan Martinelli
- Department of Science and Technological Innovation, University of Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
- Department of Health Sciences (DISSAL), Università di Genova, Via A. Pastore 1, 16132, Genova, Italy
- Nuclear Medicine Unit, IRCCS Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132, Genova, Italy
| | - Elisabetta Romano
- Department of Science and Technological Innovation, University of Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
| | - Attila Laczovics
- Faculty of Medicine, Institute of Medical Imaging, University of Debrecen, Nagyerdei körút 98, 4032, Debrecen, Hungary
| | - David Horváth
- Faculty of Science and Technology, Department of Physical Chemistry, Doctoral School of Chemistry, University of Debrecen, Egyetem tér 1, 4010, Debrecen, Hungary
- Bracco Imaging SpA, CRB Trieste, AREA Science Park, 34149, Basovizza (TS), Italy
| | - Elena Grattoni
- Bracco Imaging SpA, CRB Trieste, AREA Science Park, 34149, Basovizza (TS), Italy
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, Piazzale Europa 1, 34127, Trieste (TS), Italy
| | - Zsolt Baranyai
- Bracco Imaging SpA, CRB Trieste, AREA Science Park, 34149, Basovizza (TS), Italy
- Faculty of Science and Technology, Doctoral School of Chemistry, University of Debrecen, Egyetem tér 1, 4010, Debrecen, Hungary
| | - Lorenzo Tei
- Department of Science and Technological Innovation, University of Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
| |
Collapse
|
7
|
Jiang L, Cai Z, Cao Y, Fu S, Gu H, Zhu J, Cao W, Zhong L, Zhong J, Wu C, Wang K, Xia C, Lui S, Song B, Gong Q, Ai H. Facile Synthesis of Rigid Binuclear Manganese Complexes for Magnetic Resonance Angiography and SLC39A14-Mediated Hepatic Imaging. Bioconjug Chem 2024; 35:703-714. [PMID: 38708860 DOI: 10.1021/acs.bioconjchem.4c00185] [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: 05/07/2024]
Abstract
Manganese(II)-based contrast agents (MBCAs) are potential candidates for gadolinium-free enhanced magnetic resonance imaging (MRI). In this work, a rigid binuclear MBCA (Mn2-PhDTA2) with a zero-length linker was developed via facile synthetic routes, while the other dimer (Mn2-TPA-PhDTA2) with a longer rigid linker was also synthesized via more complex steps. Although the molecular weight of Mn2-PhDTA2 is lower than that of Mn2-TPA-PhDTA2, their T1 relaxivities are similar, being increased by over 71% compared to the mononuclear Mn-PhDTA. In the presence of serum albumin, the relaxivity of Mn2-PhDTA2 was slightly lower than that of Mn2-TPA-PhDTA2, possibly due to the lower affinity constant. The transmetalation reaction with copper(II) ions confirmed that Mn2-PhDTA2 has an ideal kinetic inertness with a dissociation half-life of approximately 10.4 h under physiological conditions. In the variable-temperature 17O NMR study, both Mn-PhDTA and Mn2-PhDTA2 demonstrated a similar estimated q close to 1, indicating the formation of monohydrated complexes with each manganese(II) ion. In addition, Mn2-PhDTA2 demonstrated a superior contrast enhancement to Mn-PhDTA in in vivo vascular and hepatic MRI and can be rapidly cleared through a dual hepatic and renal excretion pattern. The hepatic uptake mechanism of Mn2-PhDTA2 mediated by SLC39A14 was validated in cellular uptake studies.
Collapse
Affiliation(s)
- Lingling Jiang
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610065, China
| | - Zhongyuan Cai
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610065, China
| | - Yingzi Cao
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610065, China
| | - Shengxiang Fu
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Haojie Gu
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610065, China
| | - Jiang Zhu
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong 637000, China
| | - Weidong Cao
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong 637000, China
| | - Lei Zhong
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong 637000, China
| | - Jie Zhong
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong 637000, China
| | - Changqiang Wu
- Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong 637000, China
| | - Kefeng Wang
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610065, China
| | - Chunchao Xia
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Su Lui
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bin Song
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China
- Psychoradiology Research Unit of Chinese Academy of Medical Sciences, Sichuan University, Chengdu 610041, China
| | - Hua Ai
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610065, China
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| |
Collapse
|
8
|
Jian Y, Mo G, Xu W, Liu Y, Zhang Z, Ding Y, Gao R, Xu J, Zhu J, Shu K, Yan Z, Carniato F, Platas-Iglesias C, Ye F, Botta M, Dai L. Chiral Pyclen-Based Heptadentate Chelates as Highly Stable MRI Contrast Agents. Inorg Chem 2024; 63:8462-8475. [PMID: 38642052 DOI: 10.1021/acs.inorgchem.4c01028] [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: 04/22/2024]
Abstract
In recent years, pyclen-based complexes have attracted a great deal of interest as magnetic resonance imaging (MRI) contrast agents (CAs) and luminescent materials, as well as radiopharmaceuticals. Remarkably, gadopiclenol, a Gd(III) bishydrated complex featuring a pyclen-based heptadentate ligand, received approval as a novel contrast agent for clinical MRI application in 2022. To maximize stability and efficiency, two novel chiral pyclen-based chelators and their complexes were developed in this study. Gd-X-PCTA-2 showed significant enhancements in both thermodynamic and kinetic stabilities compared to those of the achiral parent derivative Gd-PCTA. 1H NMRD profiles reveal that both chiral gadolinium complexes (Gd-X-PCTA-1 and Gd-X-PCTA-2) have a higher relaxivity than Gd-PCTA, while variable-temperature 17O NMR studies show that the two inner-sphere water molecules have distinct residence times τMa and τMb. Furthermore, in vivo imaging demonstrates that Gd-X-PCTA-2 enhances the signal in the heart and kidneys of the mice, and the chiral Gd complexes exhibit the ability to distinguish between tumors and normal tissues in a 4T1 mouse model more efficiently than that of the clinical agent gadobutrol. Biodistribution studies show that Gd-PCTA and Gd-X-PCTA-2 are primarily cleared by a renal pathway, with 24 h residues of Gd-X-PCTA-2 in the liver and kidney being lower than those of Gd-PCTA.
Collapse
Affiliation(s)
- Yong Jian
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China 325035
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Gengshen Mo
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Weiyuan Xu
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Yao Liu
- Sichuan Key Laboratory of Medical Imaging, School of Pharmacy and Nanchong Key laboratory of MRI Contrast Agent, North Sichuan Medical College, Nanchong, People's Republic of China 637000
| | - Zhichao Zhang
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Yinghui Ding
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Ruonan Gao
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Jiao Xu
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Jiang Zhu
- Sichuan Key Laboratory of Medical Imaging, School of Pharmacy and Nanchong Key laboratory of MRI Contrast Agent, North Sichuan Medical College, Nanchong, People's Republic of China 637000
| | - Kun Shu
- Department of Radiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China 325027
| | - Zhihan Yan
- Department of Radiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China 325027
| | - Fabio Carniato
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, Alessandria, Italy 15121
| | - Carlos Platas-Iglesias
- Departamento de Química Fundamental, Facultade de Ciencias, Universidade da Coruña, Campus da Zapateira-Rúa da Fraga 10, A Coruña, Spain 15008
| | - Fangfu Ye
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China 325035
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, Alessandria, Italy 15121
| | - Lixiong Dai
- Joint Centre of Translational Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China 325035
- Joint Centre of Translational Medicine, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People's Republic of China 325000
| |
Collapse
|
9
|
Kaur J, Sridharr M. Key Insights on the Classification and Theranostic Applications of Magnetic Resonance Imaging Contrast Agents. ChemMedChem 2024; 19:e202300521. [PMID: 38246874 DOI: 10.1002/cmdc.202300521] [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: 09/27/2023] [Revised: 01/19/2024] [Accepted: 01/19/2024] [Indexed: 01/23/2024]
Abstract
Magnetic resonance imaging (MRI) is a non-invasive molecular imaging tool being extensively employed in clinical and biomedical research for the detection of a broad spectrum of diseases. This technique offers remarkable spatial resolution, good tissue penetration and a high soft tissue contrast. Contrast agents (CAs) have been regularly used in MRI tests to enhance the resolution of MR images and to visualize the diseased sites in the body. In the past years, considerable efforts have been devoted towards developing new theranostic MRI agents that can be tailored to integrate the targeting and therapeutic functions in a single agent. In this review, we have underlined the role of the MRI CAs in the developing field of 'theranostics' and their recent applications in the combined imaging and therapy of different types of tumors. In addition, this review also outlines the different categories of MRI CAs and their comprehensive classification based on different criteria such as chemical composition, relaxation mechanism and biodistribution with clinically relevant examples.
Collapse
Affiliation(s)
- Jasleen Kaur
- Amity Institute of Virology and Immunology, Amity University, Sector-125, Amity University, Noida, 201313, Uttar Pradesh, India
| | - Manasvini Sridharr
- LMU Biocenter, Martinsreid, Ludwig-Maximilians-Universität München, Ludwig-Maximilians-Universität München, Geschwister-Scholl-Platz 1, München, Germany
| |
Collapse
|
10
|
Garifo S, Vangijzegem T, Stanicki D, Laurent S. A Review on the Design of Carbon-Based Nanomaterials as MRI Contrast Agents. Molecules 2024; 29:1639. [PMID: 38611919 PMCID: PMC11013788 DOI: 10.3390/molecules29071639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/31/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
The administration of magnetic resonance imaging (MRI) contrast agents (CAs) has been conducted since 1988 by clinicians to enhance the clarity and interpretability of MR images. CAs based on gadolinium chelates are the clinical standard used worldwide for the diagnosis of various pathologies, such as the detection of brain lesions, the visualization of blood vessels, and the assessment of soft tissue disorders. However, due to ongoing concerns associated with the safety of gadolinium-based contrast agents, considerable efforts have been directed towards developing contrast agents with better relaxivities, reduced toxicity, and eventually combined therapeutic modalities. In this context, grafting (or encapsulating) paramagnetic metals or chelates onto (within) carbon-based nanoparticles is a straightforward approach enabling the production of contrast agents with high relaxivities while providing extensive tuneability regarding the functionalization of the nanoparticles. Here, we provide an overview of the parameters defining the efficacy of lanthanide-based contrast agents and the subsequent developments in the field of nanoparticular-based contrast agents incorporating paramagnetic species.
Collapse
Affiliation(s)
- Sarah Garifo
- NMR and Molecular Imaging Laboratory, General, Organic and Biomedical Chemistry Unit, University of Mons, 19 Avenue Maistriau, 7000 Mons, Belgium; (T.V.); (D.S.)
| | - Thomas Vangijzegem
- NMR and Molecular Imaging Laboratory, General, Organic and Biomedical Chemistry Unit, University of Mons, 19 Avenue Maistriau, 7000 Mons, Belgium; (T.V.); (D.S.)
| | - Dimitri Stanicki
- NMR and Molecular Imaging Laboratory, General, Organic and Biomedical Chemistry Unit, University of Mons, 19 Avenue Maistriau, 7000 Mons, Belgium; (T.V.); (D.S.)
| | - Sophie Laurent
- NMR and Molecular Imaging Laboratory, General, Organic and Biomedical Chemistry Unit, University of Mons, 19 Avenue Maistriau, 7000 Mons, Belgium; (T.V.); (D.S.)
- Center for Microscopy and Molecular Imaging (CMMI), 8 Rue Adrienne Boland, 6041 Gosselies, Belgium
| |
Collapse
|
11
|
Akhmadeev BS, Nizameev IR, Kholin KV, Voloshina AD, Gerasimova TP, Gubaidullin AT, Romashchenko AV, Zavjalov EL, Kashnik IV, Brylev KA, Mustafina AR. Specificity of hexarhenium cluster anions for synthesis of Mn 2+-based nanoparticles with lamellar shape and pH-induced leaching for specific organ selectivity in MRI contrasting. J Colloid Interface Sci 2024; 659:1052-1062. [PMID: 38195359 DOI: 10.1016/j.jcis.2023.12.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/11/2023] [Accepted: 12/30/2023] [Indexed: 01/11/2024]
Abstract
The present work demonstrates the structure variation of hexarhenium anionic cluster units [{Re6S8}(CN)(6-n)(OH)n]4- (n = 0, 2, 4) as the strategy to develop Mn2+-containing nanoparticles (NPs) exhibiting pH-dependent leaching. The dicyanotetrahydroxo complex [{Re6S8}(CN)2(OH)4]4- is the optimal for the synthesis of the Mn2+-based NPs with a lamellar shape exhibiting the pH-dependent aggregation and magnetic relaxation behavior. The pH-dependent behavior of the NPs derives from the easy protonation of the apical hydroxo ligands of [{Re6S8}(CN)2(OH)4]4- cluster, which triggers partial leaching of Mn2+ ions and aggregation of the NPs driven by the surface neutralization. The in vivo MRI scanning of the mice intravenously injected with the NPs indicates the preferable accumulation of the lamellar NPs within mouse intestine over liver and kidneys. This differs from the spherical NPs constructed from [{Re6Se8}(CN)6]4- units, which provide the preferable brightening of mouse liver over kidneys and intestine.
Collapse
Affiliation(s)
- B S Akhmadeev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation.
| | - I R Nizameev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - K V Kholin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - A D Voloshina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - T P Gerasimova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - A T Gubaidullin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| | - A V Romashchenko
- Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 10 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - E L Zavjalov
- Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 10 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - I V Kashnik
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - K A Brylev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russian Federation
| | - A R Mustafina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov str., 420088 Kazan, Russian Federation
| |
Collapse
|
12
|
Mallik R, Saha M, Sarmah A, Singh V, Mohan H, Bhat P, Kumaran SS, Mukherjee C. A Bis(Aquated) Mn(II)-Based MRI Contrast Agent with a Rigid Hydroquinazoline Unit: Synthesis, Characterization, and in Vivo MR Imaging Study. ACS APPLIED BIO MATERIALS 2024; 7:1831-1841. [PMID: 38427704 DOI: 10.1021/acsabm.3c01236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Since the finding of nephrogenic systemic fibrosis (NFS) in patients with renal impairment and the long-term accumulation of Gd(III) ions in the central nervous system, the search for nongadolinium ion-based MRI contrast agents made of nutrient metal ions has drawn paramount attention. In this context, the development of Mn(II)-based MRI contrast agents has been a subject of interest for the last few decades. Herein, we report a pentadentate ligand (Li2[BenzPic2]) composed of two picolinate moieties and a rigid 1,2,3,4-tetrahydroquinazoline unit and the corresponding bis(aquated) Mn(II) complex (Complex 1). The complex exhibited high thermodynamic stability (log Kcond = 11.62) and kinetic inertness similar to that of the clinically approved Gd(III)-based contrast agent Magnevist. Complex 1 exerted longitudinal relaxivity (r1) of 5.32 mM-1 s-1 at 1.41 T, 37 °C, pH 7.4, and it increased by 3.6-fold in the presence of serum albumin protein, confirming a substantial rigidifying interaction (albumin association constant KA = 1.66 × 103 M-1) between the protein and the amphiphilic (log P = -0.45) contrast agent. An intravenous dose of 0.08 mmol/kg in a healthy mouse, excellent MRI signal intensity enhancement in the vasculature of the mouse liver, and brightened images of the gallbladder, kidney, and liver were realized.
Collapse
Affiliation(s)
- Riya Mallik
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Muktashree Saha
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Amrit Sarmah
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, CZ-16610 Prague 6, Czech Republic
| | - Vandna Singh
- Department of Medical Biotechnology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Hari Mohan
- Department of Medical Biotechnology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Priyanka Bhat
- Department of NMR, All India Institute of Medical Sciences, Ansari Nagar, 110029 New Delhi, India
| | - S Senthil Kumaran
- Department of NMR, All India Institute of Medical Sciences, Ansari Nagar, 110029 New Delhi, India
| | - Chandan Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| |
Collapse
|
13
|
Kras EA, Cineus R, Crawley MR, Morrow JR. Macrocyclic complexes of Fe(III) with mixed hydroxypropyl and phenolate or amide pendants as T 1 MRI probes. Dalton Trans 2024; 53:4154-4164. [PMID: 38318938 PMCID: PMC10897765 DOI: 10.1039/d3dt04013e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 01/29/2024] [Indexed: 02/07/2024]
Abstract
High-spin Fe(III) complexes of 1,4,7-triazacyclononane (TACN) with mixed oxygen donor pendants including hydroxypropyl, phenolate or amide groups are prepared for study as T1 MRI probes. Complexes with two hydroxypropyl pendants and either amide (Fe(TOAB)) or phenolate (Fe(PTOB)) groups are compared to an analog with three hydroxypropyl groups (Fe(NOHP)), in order to study the effect of the third pendant on the coordination sphere as probed by solution chemistry, relaxivity and structural studies. Solution studies show that Fe(PTOB) has two ionizations with the phenol pendant deprotonating with a pKa of 1.7 and a hydroxypropyl pendent with pKa of 6.3. The X-ray crystal structure of [Fe(PTOB)]Br2 features a six-coordinate complex with two bound hydroxypropyl groups, and a phenolate in a distorted octahedral geometry. The Fe(TOAB) complex has a single deprotonation, assigned to a hydroxypropyl group with a pKa value of 7.0. Both complexes are stabilized as high-spin Fe(III) in solution as shown by their effective magnetic moments and Fe(III)/Fe(II) redox potentials of -390 mV and -780 mV versus NHE at pH 7 and 25 °C for Fe(TOAB) and Fe(PTOB) respectively. Both Fe(PTOB) and Fe(TOAB) are kinetically inert to dissociation under a variety of challenges including phosphate/carbonate buffer, one equivalent of ZnCl2, two equivalents of transferrin or 100 mM HCl, or at basic pH values over 24 h at 37 °C. The r1 relaxivity of Fe(TOAB) at 1.4 T, pH 7.4 and 33 °C is relatively low at 0.6 mM-1 s-1 whereas the r1 relaxivity of Fe(PTOB) is more substantial and shows an increase of 2.5 fold to 2.5 mM-1 s-1 at acidic pH. The increase in relaxivity at acidic pH is attributed to protonation of the phenolate group to provide an additional pathway for proton relaxation.
Collapse
Affiliation(s)
- Elizabeth A Kras
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, NY 14260, USA.
| | - Roy Cineus
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, NY 14260, USA.
| | - Matthew R Crawley
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, NY 14260, USA.
| | - Janet R Morrow
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, NY 14260, USA.
| |
Collapse
|
14
|
Abstract
ABSTRACT Recent safety concerns surrounding the use of gadolinium-based contrast agents (GBCAs) have spurred research into identifying alternatives to GBCAs for use with magnetic resonance imaging. This review summarizes the molecular and pharmaceutical properties of a GBCA replacement and how these may be achieved. Complexes based on high-spin, divalent manganese (Mn 2+ ) have shown promise as general purpose and liver-specific contrast agents. A detailed description of the complex Mn-PyC3A is provided, describing its physicochemical properties, its behavior in different animal models, and how it compares with GBCAs. The review points out that, although there are parallels with GBCAs in how the chemical properties of Mn 2+ complexes can predict in vivo behavior, there are also marked differences between Mn 2+ complexes and GBCAs.
Collapse
Affiliation(s)
- Peter Caravan
- From the Athinoula A. Martinos Center for Biomedical Imaging, Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| |
Collapse
|
15
|
Uzal-Varela R, Rodríguez-Rodríguez A, Lalli D, Valencia L, Maneiro M, Botta M, Iglesias E, Esteban-Gómez D, Angelovski G, Platas-Iglesias C. Endeavor toward Redox-Responsive Transition Metal Contrast Agents Based on the Cross-Bridge Cyclam Platform. Inorg Chem 2024; 63:1575-1588. [PMID: 38198518 PMCID: PMC10806912 DOI: 10.1021/acs.inorgchem.3c03486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/21/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024]
Abstract
We present the synthesis and characterization of a series of Mn(III), Co(III), and Ni(II) complexes with cross-bridge cyclam derivatives (CB-cyclam = 1,4,8,11-tetraazabicyclo[6.6.2]hexadecane) containing acetamide or acetic acid pendant arms. The X-ray structures of [Ni(CB-TE2AM)]Cl2·2H2O and [Mn(CB-TE1AM)(OH)](PF6)2 evidence the octahedral coordination of the ligands around the Ni(II) and Mn(III) metal ions, with a terminal hydroxide ligand being coordinated to Mn(III). Cyclic voltammetry studies on solutions of the [Mn(CB-TE1AM)(OH)]2+ and [Mn(CB-TE1A)(OH)]+ complexes (0.15 M NaCl) show an intricate redox behavior with waves due to the MnIII/MnIV and MnII/MnIII pairs. The Co(III) and Ni(II) complexes with CB-TE2A and CB-TE2AM show quasi-reversible features due to the CoIII/CoII or NiII/NiIII pairs. The [Co(CB-TE2AM)]3+ complex is readily reduced by dithionite in aqueous solution, as evidenced by 1H NMR studies, but does not react with ascorbate. The [Mn(CB-TE1A)(OH)]+ complex is however reduced very quickly by ascorbate following a simple kinetic scheme (k0 = k1[AH-], where [AH-] is the ascorbate concentration and k1 = 628 ± 7 M-1 s-1). The reduction of the Mn(III) complex to Mn(II) by ascorbate provokes complex dissociation, as demonstrated by 1H nuclear magnetic relaxation dispersion studies. The [Ni(CB-TE2AM)]2+ complex shows significant chemical exchange saturation transfer effects upon saturation of the amide proton signals at 71 and 3 ppm with respect to the bulk water signal.
Collapse
Affiliation(s)
- Rocío Uzal-Varela
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - Aurora Rodríguez-Rodríguez
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - Daniela Lalli
- Dipartimento
di Scienze e Innovazione Tecnologica, Magnetic Resonance Platform
(PRISMA-UPO), Universitá del Piemonte
Orientale, Viale T. Michel
11, Alessandria 15121, Italy
| | - Laura Valencia
- Departamento
de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende 36310, Pontevedra, Spain
| | - Marcelino Maneiro
- Departamento
de Química Inorgánica, Facultade de Ciencias, Campus
Terra, Universidade de Santiago de Compostela, Lugo 27002, Galicia, Spain
| | - Mauro Botta
- Dipartimento
di Scienze e Innovazione Tecnologica, Magnetic Resonance Platform
(PRISMA-UPO), Universitá del Piemonte
Orientale, Viale T. Michel
11, Alessandria 15121, Italy
| | - Emilia Iglesias
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - David Esteban-Gómez
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| | - Goran Angelovski
- Laboratory
of Molecular and Cellular Neuroimaging, International Center for Primate
Brain Research (ICPBR), Center for Excellence in Brain Science and
Intelligence Technology (CEBSIT), Chinese
Academy of Sciences (CAS), Shanghai 201602, PR China
| | - Carlos Platas-Iglesias
- Centro
Interdisciplinar de Química e Bioloxía (CICA) and Departamento
de Química, Facultade de Ciencias, Universidade da Coruña, A Coruña 15071, Galicia, Spain
| |
Collapse
|
16
|
Anbu S, Kenning L, Stasiuk GJ. ATP-responsive Mn(II)-based T1 contrast agent for MRI. Chem Commun (Camb) 2023; 59:13623-13626. [PMID: 37902503 PMCID: PMC10644988 DOI: 10.1039/d3cc03430e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/19/2023] [Indexed: 10/31/2023]
Abstract
A novel diacetylpyridylcarbohydrazide-DAPyCOHz-based manganese(II) chelate with dipicolylamine/zinc(II) (DPA/Zn2+) arms (MnLDPA-Zn2) was developed for adenosine triphosphate (ATP) responsive magnetic resonance imaging (MRI) T1 contrast applications. Compound 2 shows enhanced relaxivity (r1 = 11.52 mM-1 s-1) upon selective ATP binding over other phosphates.
Collapse
Affiliation(s)
- Sellamuthu Anbu
- Departments of Chemistry and Biomedical Sciences, University of Hull, Cottingham Road, Hull, HU6 7RX, UK.
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Lawerence Kenning
- MRI Centre, Royal Infirmary Hospital NHS Trust, Anlaby Road, Hull, HU3 2JZ, UK
| | - Graeme J Stasiuk
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, Fourth Floor Lambeth Wing, St Thomas' Hospital, London, SE1 7EH, UK.
| |
Collapse
|
17
|
Ndiaye D, Sy M, Thor W, Charbonnière LJ, Nonat AM, Tóth É. Structural Variations in Carboxylated Bispidine Ligands: Influence of Positional Isomerism and Rigidity on the Conformation, Stability, Inertness and Relaxivity of their Mn 2+ Complexes. Chemistry 2023; 29:e202301880. [PMID: 37470713 DOI: 10.1002/chem.202301880] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 07/21/2023]
Abstract
Mn2+ complexes of 2,4-pyridyl-disubstituted bispidine ligands have emerged as more biocompatible alternatives to Gd3+ -based MRI probes. They display relaxivities comparable to that of commercial contrast agents and high kinetic inertness, unprecedented for Mn2+ complexes. The chemical structure, in particular the substituents on the two macrocyclic nitrogens N3 and N7, are decisive for the conformation of the Mn2+ complexes, and this will in turn determine their thermodynamic, kinetic and relaxation properties. We describe the synthesis of four ligands with acetate substituents in positions N3, N7 or both. We evidence that the bispidine conformation is dependent on N3 substitution, with direct impact on the thermodynamic stability, kinetic inertness, hydration state and relaxivity of the Mn2+ complexes. These results unambiguously show that (i) solely a chair-chair conformation allows for favorable inertness and relaxivity, and (ii) in this family such chair-chair conformation is accessible only for ligands without N3-appended carboxylates.
Collapse
Affiliation(s)
- Daouda Ndiaye
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, Rue Charles Sadron, 45071, Orléans, France
| | - Maryame Sy
- Equipe de Synthèse pour l'Analyse Département des Sciences Analytiques, Université de Strasbourg, CNRS, IPHC UMR 7178, 27, Rue Becquerel, 67A037, Strasbourg, France
| | - Waygen Thor
- Equipe de Synthèse pour l'Analyse Département des Sciences Analytiques, Université de Strasbourg, CNRS, IPHC UMR 7178, 27, Rue Becquerel, 67A037, Strasbourg, France
| | - Loïc J Charbonnière
- Equipe de Synthèse pour l'Analyse Département des Sciences Analytiques, Université de Strasbourg, CNRS, IPHC UMR 7178, 27, Rue Becquerel, 67A037, Strasbourg, France
| | - Aline M Nonat
- Equipe de Synthèse pour l'Analyse Département des Sciences Analytiques, Université de Strasbourg, CNRS, IPHC UMR 7178, 27, Rue Becquerel, 67A037, Strasbourg, France
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, Rue Charles Sadron, 45071, Orléans, France
| |
Collapse
|
18
|
Henoumont C, Devreux M, Laurent S. Mn-Based MRI Contrast Agents: An Overview. Molecules 2023; 28:7275. [PMID: 37959694 PMCID: PMC10648041 DOI: 10.3390/molecules28217275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/21/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
MRI contrast agents are required in the clinic to detect some pathologies, such as cancers. Nevertheless, at the moment, only small extracellular and non-specific gadolinium complexes are available for clinicians. Moreover, safety issues have recently emerged concerning the use of gadolinium complexes; hence, alternatives are urgently needed. Manganese-based MRI contrast agents could be one of these alternatives and increasing numbers of studies are available in the literature. This review aims at synthesizing all the research, from small Mn complexes to nanoparticular agents, including theranostic agents, to highlight all the efforts already made by the scientific community to obtain highly efficient agents but also evidence of the weaknesses of the developed systems.
Collapse
Affiliation(s)
- Céline Henoumont
- NMR and Molecular Imaging Laboratory, Department of General, Organic and Biomedical Chemistry, University of Mons, 19 Avenue Maistriau, 7000 Mons, Belgium; (C.H.)
| | - Marie Devreux
- NMR and Molecular Imaging Laboratory, Department of General, Organic and Biomedical Chemistry, University of Mons, 19 Avenue Maistriau, 7000 Mons, Belgium; (C.H.)
| | - Sophie Laurent
- NMR and Molecular Imaging Laboratory, Department of General, Organic and Biomedical Chemistry, University of Mons, 19 Avenue Maistriau, 7000 Mons, Belgium; (C.H.)
- Center for Microscopy and Molecular Imaging (CMMI), 8 Rue Adrienne Boland, 6041 Gosselies, Belgium
| |
Collapse
|
19
|
Cineus R, Abozeid SM, Sokolow GE, Spernyak JA, Morrow JR. Fe(III) T1 MRI Probes Containing Phenolate or Hydroxypyridine-Appended Triamine Chelates and a Coordination Site for Bound Water. Inorg Chem 2023; 62:16513-16522. [PMID: 37748050 DOI: 10.1021/acs.inorgchem.3c02344] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Fe(III) complexes containing a triamine framework and phenolate or hydroxypyridine donors are characterized and studied as T1 MRI probes. In contrast to most Fe(III) MRI probes of linear chelates reported to date, the ligands reported here are pentadentate to give six-coordinate complexes with a coordination site for inner-sphere water. The crystal structure of the complex containing unsubstituted phenolate donors, Fe(L1)Cl, shows a six-coordinate iron center and contains a chloride ligand that is displaced in water. Two additional derivatives are sufficiently water-soluble for study as MRI probes, including a complex with a hydroxypyridine group, Fe(L2), and a hydroxybenzoic acid group, Fe(L3). The pH potentiometric titrations give protonation constants of 7.2 and 7.5 for Fe(L2) and Fe(L3), respectively, which are assigned to deprotonation of the bound water. Changes in the electronic absorbance spectra of the complexes as a function of pH are consistent with the deprotonation of phenol pendants at acidic pH values. However, the inner-sphere water ligand of Fe(L2) and Fe(L3) does not exchange rapidly on the NMR timescale at pH 6.0 or 7.4, as shown by variable-temperature 17O NMR spectroscopy. The pH-dependent proton relaxivity profiles show a maximum in relaxivity at a near-neutral pH, suggesting that exchange of the protons of the bound water is an important contribution. Competitive binding studies with ethylenediaminetetraacetic acid (EDTA) show effective stability constants for Fe(L2) and Fe(L3) at pH 7.4 with log K values of 21.1 and 20.5, respectively. These two complexes are kinetically inert in carbonate phosphate buffer at 37 °C for several hours but transfer iron to transferrin. Fe(L2) and Fe(L3) show enhanced contrast in T1-weighted imaging analyses in BALB/c mice. These studies show that Fe(L2) clears through mixed renal and hepatobiliary routes, while Fe(L3) has a similar pharmacokinetic clearance profile to a macrocyclic Gd(III) contrast agent.
Collapse
Affiliation(s)
- Roy Cineus
- Department of Chemistry, University at Buffalo, The State University of New York Amherst, New York 14260, United States
| | - Samira M Abozeid
- Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhoria Street, 35516 Mansoura, Egypt
| | - Gregory E Sokolow
- Department of Chemistry, University at Buffalo, The State University of New York Amherst, New York 14260, United States
| | - Joseph A Spernyak
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14263, United States
| | - Janet R Morrow
- Department of Chemistry, University at Buffalo, The State University of New York Amherst, New York 14260, United States
| |
Collapse
|
20
|
Carniato F, Ricci M, Tei L, Garello F, Furlan C, Terreno E, Ravera E, Parigi G, Luchinat C, Botta M. Novel Nanogels Loaded with Mn(II) Chelates as Effective and Biologically Stable MRI Probes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302868. [PMID: 37345577 DOI: 10.1002/smll.202302868] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/01/2023] [Indexed: 06/23/2023]
Abstract
Here it is described nanogels (NG) based on a chitosan matrix, which are covalently stabilized by a bisamide derivative of Mn-t-CDTA (t-CDTA = trans-1,2-diaminocyclohexane-N,N,N',N'-tetraacetic acid). the Mn(II) complex acts both as a contrast medium and as a cross-linking agent. These nanogels are proposed as an alternative to the less stable paramagnetic nanogels obtained by electrostatic interactions between the polymeric matrix and paramagnetic Gd(III) chelates. The present novel nanogels show: i) relaxivity values seven times higher than that of typical monohydrated Mn(II) chelates at the clinical fields, thanks to the combination of a restricted mobility of the complex with a fast exchange of the metal-bound water molecule; ii) high stability of the formulation over time at pH 5 and under physiological conditions, thus excluding metal leaking or particles aggregation; iii) good extravasation and accumulation, with a maximum contrast achieved at 24 h post-injection in mice bearing subcutaneous breast cancer tumor; iv) high T1 contrast (1 T) in the tumor 24 h post-injection. These improved properties pave the way for the use of these paramagnetic nanogels as promising magnetic resonance imaging (MRI) probes for in vitro and in vivo preclinical applications.
Collapse
Affiliation(s)
- Fabio Carniato
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, Alessandria, 15121, Italy
| | - Marco Ricci
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, Alessandria, 15121, Italy
| | - Lorenzo Tei
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, Alessandria, 15121, Italy
| | - Francesca Garello
- Molecular Imaging Centre, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, 10126, Italy
| | - Chiara Furlan
- Molecular Imaging Centre, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, 10126, Italy
| | - Enzo Terreno
- Molecular Imaging Centre, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, 10126, Italy
| | - Enrico Ravera
- Magnetic Resonance Center (CERM), University of Florence, Sesto Fiorentino, 50019, Italy
- Department of Chemistry "Ugo Schiff", University of Florence, Sesto Fiorentino, 50019, Italy
- Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), Sesto Fiorentino, 50019, Italy
| | - Giacomo Parigi
- Magnetic Resonance Center (CERM), University of Florence, Sesto Fiorentino, 50019, Italy
- Department of Chemistry "Ugo Schiff", University of Florence, Sesto Fiorentino, 50019, Italy
- Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), Sesto Fiorentino, 50019, Italy
| | - Claudio Luchinat
- Magnetic Resonance Center (CERM), University of Florence, Sesto Fiorentino, 50019, Italy
- Department of Chemistry "Ugo Schiff", University of Florence, Sesto Fiorentino, 50019, Italy
- Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), Sesto Fiorentino, 50019, Italy
- Giotto Biotech S.r.l., Sesto Fiorentino, 50019, Italy
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale T. Michel 11, Alessandria, 15121, Italy
| |
Collapse
|
21
|
Topor A, Voda MA, Vasos PR. Earth's field NMR relaxation of pre-polarised water protons for real-time detection of free-radical formation. Chem Commun (Camb) 2023; 59:11672-11675. [PMID: 37695610 DOI: 10.1039/d3cc02502k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Real-time imaging of free-radical formation is important in physical chemistry, biochemistry, and radiobiology, especially for the study of radiation dose-rate effects. Herein, we show for the first time that the formation of free radicals during the time course of a chemical reaction can be imaged through NMR relaxation measurements of water protons in the Earth's magnetic field, in an open-coil spectrometer. The relaxation rate constants of water magnetisation are enhanced as reactions leading to the formation of hydroxyl radicals and oxygen proceed on the timescale of tens of minutes. The reaction rate of iodide-catalysed H2O2 decay was followed by Earth-field 1H NMR relaxation in real time. The relaxivities of the reaction product and several other paramagnetic compounds were determined. Spin-trap molecules were then used to capture ˙OH radical species, thus altering the reaction rate in proportion to the formation of new paramagnetic compounds. Thereby, a new experimental method for magnetic resonance imaging of the formation of intermediate and stable radical species in water is proposed.
Collapse
Affiliation(s)
- Alexandru Topor
- Biophysics and Biomedical Applications Group and Laboratory, Extreme Light Infrastructure-Nuclear Physics (ELI-NP), Laser Gamma Experiments Department (LGED), "Horia Hulubei" National Institute for Physics and Nuclear Engineering (IFIN-HH), Reactorului Str. 30, Bucharest-Magurele 077125, Romania
- University of Bucharest, Doctoral School of Chemistry, 4-12 Regina Elisabeta Bd, 030018 Bucharest, Romania
- C. D. Nenitzescu Institute of Organic and Supramolecular Chemistry, 202B Splaiul Independenţei Bucharest, Romania
| | - Mihai A Voda
- Biophysics and Biomedical Applications Group and Laboratory, Extreme Light Infrastructure-Nuclear Physics (ELI-NP), Laser Gamma Experiments Department (LGED), "Horia Hulubei" National Institute for Physics and Nuclear Engineering (IFIN-HH), Reactorului Str. 30, Bucharest-Magurele 077125, Romania
| | - Paul R Vasos
- Biophysics and Biomedical Applications Group and Laboratory, Extreme Light Infrastructure-Nuclear Physics (ELI-NP), Laser Gamma Experiments Department (LGED), "Horia Hulubei" National Institute for Physics and Nuclear Engineering (IFIN-HH), Reactorului Str. 30, Bucharest-Magurele 077125, Romania
- University of Bucharest, Interdisciplinary School of Doctoral Studies, ISDS, 4-12 Regina Elisabeta Bd, 030018 Bucharest, Romania.
| |
Collapse
|
22
|
Pinto SMA, Ferreira ARR, Teixeira DSS, Nunes SCC, Batista de Carvalho ALM, Almeida JMS, Garda Z, Pallier A, Pais AACC, Brett CMA, Tóth É, Marques MPM, Pereira MM, Geraldes CFGC. Fluorinated Mn(III)/(II)-Porphyrin with Redox-Responsive 1 H and 19 F Relaxation Properties. Chemistry 2023; 29:e202301442. [PMID: 37606898 DOI: 10.1002/chem.202301442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Indexed: 08/23/2023]
Abstract
A new fluorinated manganese porphyrin, (Mn-TPP-p-CF3 ) is reported capable of providing, based on the Mn(III)/Mn(II) equilibrium, dual 1 H relaxivity and 19 F NMR response to redox changes. The physical-chemical characterization of both redox states in DMSO-d6 /H2 O evidenced that the 1 H relaxometric and 19 F NMR properties are appropriate for differential redox MRI detection. The Mn(III)-F distance (dMn-F =9.7-10 Å), as assessed by DFT calculations, is well tailored to allow for adequate paramagnetic effect of Mn(III) on 19 F T1 and T2 relaxation times. Mn-TPP-p-CF3 has a reversible Mn(II)/Mn(III) redox potential of 0.574 V vs. NHE in deoxygenated aqueous HEPES/ THF solution. The reduction of Mn(III)-TPP-p-CF3 in the presence of ascorbic acid is slowly, but fully reversed in the presence of air oxygen, as monitored by UV-Vis spectrometry and 19 F NMR. The broad 1 H and 19 F NMR signals of Mn(III)-TPP-p-CF3 disappear in the presence of 1 equivalent ascorbate replaced by a shifted and broadened 19 F NMR signal from Mn(II)-TPP-p-CF3 . Phantom 19 F MR images in DMSO show a MRI signal intensity decrease upon reduction of Mn(III)-TPP-p-CF3 , retrieved upon complete reoxidation in air within ~24 h. 1 H NMRD curves of the Mn(III)/(II)-TPP-p-CF3 chelates in mixed DMSO/water solvent have the typical shape of Mn(II)/Mn(III) porphyrins.
Collapse
Affiliation(s)
- Sara M A Pinto
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535, Coimbra, Portugal
| | - Ana R R Ferreira
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535, Coimbra, Portugal
| | - Daniela S S Teixeira
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535, Coimbra, Portugal
| | - Sandra C C Nunes
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535, Coimbra, Portugal
| | - Ana L M Batista de Carvalho
- Molecular Physical Chemistry R&D Unit Department of Chemistry, University of Coimbra, Rua Larga, 3004-535, Coimbra, Portugal
- Department of Life Sciences, Faculty of Science and Technology, Calçada Martim de Freitas, 3000-393, Coimbra, Portugal
| | - Joseany M S Almeida
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- CEMMPRE, University of Coimbra, Pinhal de Marrocos, 3030-788, Coimbra, Portugal
| | - Zoltan Garda
- Centre de Biophysique Moléculaire, CNRS, UPR 4301, Université d'Orléans, Rue Charles Sadron, 45071, Orléans Cedex 2, France
| | - Agnés Pallier
- Centre de Biophysique Moléculaire, CNRS, UPR 4301, Université d'Orléans, Rue Charles Sadron, 45071, Orléans Cedex 2, France
| | - Alberto A C C Pais
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535, Coimbra, Portugal
| | - Christopher M A Brett
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- CEMMPRE, University of Coimbra, Pinhal de Marrocos, 3030-788, Coimbra, Portugal
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS, UPR 4301, Université d'Orléans, Rue Charles Sadron, 45071, Orléans Cedex 2, France
| | - Maria P M Marques
- Molecular Physical Chemistry R&D Unit Department of Chemistry, University of Coimbra, Rua Larga, 3004-535, Coimbra, Portugal
- Department of Life Sciences, Faculty of Science and Technology, Calçada Martim de Freitas, 3000-393, Coimbra, Portugal
| | - Mariette M Pereira
- University of Coimbra, CQC-IMS, Department of Chemistry, P-3004-535, Coimbra, Portugal
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535, Coimbra, Portugal
| | - Carlos F G C Geraldes
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535, Coimbra, Portugal
- Department of Life Sciences, Faculty of Science and Technology, Calçada Martim de Freitas, 3000-393, Coimbra, Portugal
- CIBIT/ICNAS, University of Coimbra, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal
| |
Collapse
|
23
|
Xue Y, Xiao B, Xia Z, Dai L, Xia Q, Zhong L, Zhu C, Zhu J. A New OATP-Mediated Hepatobiliary-Specific Mn(II)-Based MRI Contrast Agent for Hepatocellular Carcinoma in Mice: A Comparison With Gd-EOB-DTPA. J Magn Reson Imaging 2023; 58:926-933. [PMID: 36609994 DOI: 10.1002/jmri.28590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/27/2022] [Accepted: 12/27/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Growing concerns about the safety of gadolinium (Gd)-based contrast agents have reinforced the need for the development of Gd-free MRI contrast agents (CAs) that are effective in imaging liver tumors. PURPOSE To evaluate the ability of Mn-BnO-TyEDTA MRI CA to detect hepatocellular carcinoma in a mouse model of implanted liver tumor. STUDY TYPE Prospective. ANIMAL MODEL Thirteen orthotopically implanted liver tumor mice. FIELD STRENGTH/SEQUENCE 3.0 T/precontrast and postcontrast T1-weighted fast spoiled gradient recalled echo and T2-weighted fast recovery fast spin-echo imaging with fat suppression. ASSESSMENT The relative enhancement ratio was calculated and statistically compared. Lesion detection in postcontrast images was analyzed by calculations of area under the curve (AUC, the increases in liver-to-tumor contrast-to-noise ratio [∆CNR] vs. time curve). Mn or Gd levels were measured in the liver and tumoral tissues by inductively coupled plasma-mass spectrometry. Tumor specimens were stained with hematoxylin and eosin (H&E) and the expression of organic anion transfer peptide (OATP)1B1 was evaluated by immunofluorescence (IF) staining and mean fluorescence intensity (MFI) was calculated. STATISTICAL TESTS Unpaired t-test and two-tailed paired t-test. P < 0.05 was considered statistical significance. RESULTS Mn-BnO-TyEDTA and Gd-EOB-DTPA demonstrated nearly identical enhancement patterns in the liver, tumor, and psoas muscle and no difference in lesion detection (AUC10-30, Mn = 851 ∆CR·min, AUC10-30, Gd = 823 ∆CR·min). A Significant higher concentration of metal (Mn or Gd) was found in the liver compared to the tumor ([Mn]liver = 0.88 ± 0.07 μmmol/g, [Mn]tumor = 0.49 ± 0.05 μmmol/g, [Gd]liver = 0.65 ± 0.07 μmmol/g, [Gd]tumor = 0.27 ± 0.04 μmmol/g). IF staining showed significantly decreased expression of OATP1B1 in the tumor core compared to the liver (MFItumor = 5.28 ± 1.54, MFIliver = 25.49 ± 3.41). DATA CONCLUSION Mn-BnO-TyEDTA can provide comparable hepatobiliary tumor contrast enhancement to Gd-EOB-DTPA. EVIDENCE LEVEL 1 TECHNICAL EFFICACY: Stage 1.
Collapse
Affiliation(s)
- Yuan Xue
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- School of Basic Medical Sciences and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Bin Xiao
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - Zhiyang Xia
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- School of Basic Medical Sciences and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Lixiong Dai
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, China
| | - Qian Xia
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - Lei Zhong
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - Chunrong Zhu
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- School of Basic Medical Sciences and Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan, China
| | - Jiang Zhu
- Medical Imaging Key Laboratory of Sichuan Province, Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- School of Pharmacy, North Sichuan Medical College, Nanchong, Sichuan, China
| |
Collapse
|
24
|
Mallik R, Saha M, Singh V, Mohan H, Kumaran SS, Mukherjee C. Mn(II) complex impregnated porous silica nanoparticles as Zn(II)-responsive "Smart" MRI contrast agent for pancreas imaging. J Mater Chem B 2023; 11:8251-8261. [PMID: 37575086 DOI: 10.1039/d3tb01289a] [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: 08/15/2023]
Abstract
Type-1 and type-2 diabetes mellitus are metabolic disorders governed by the functional efficiency of pancreatic β-cells. The activities of the cells toward insulin production, storage, and secretion are accompanied by Zn(II) ions. Thus, for non-invasive pathology of the cell, developing Zn(II) ion-responsive MRI-contrast agents has earned considerable interest. In this report, we have synthesized a seven-coordinate, mono(aquated) Mn(II) complex (1), which is impregnated within a porous silica nanosphere of size 13.2 nm to engender the Mn(II)-based MRI contrast agent, complex 1@SiO2NP. The surface functionalization of the nanosphere by the Py2Pic organic moiety for the selective binding of Zn(II)-ions yields complex 1@SiO2-Py2PicNP, which exhibits r1 = 13.19 mM-1 s-1. The relaxivity value elevates to 20.38 mM-1 s-1 in the presence of 0.6 mM BSA protein at pH 7.4. Gratifyingly, r1 increases linearly with the increase of Zn(II) ion concentration and reaches 39.01 mM-1 s-1 in the presence of a 40 fold excess of the ions. Thus, Zn(II)-responsive contrast enhancement in vivo is envisaged by employing the nanoparticle. Indeed, a contrast enhancement in the pancreas is observed when complex 1@SiO2-Py2PicNP and a glucose stimulus are administered in fasted healthy C57BL/6 mice at 7 T.
Collapse
Affiliation(s)
- Riya Mallik
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039 Assam, India.
| | - Muktashree Saha
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Vandna Singh
- Department of Medical Biotechnology, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
| | - Hari Mohan
- Department of Medical Biotechnology, Maharshi Dayanand University, Rohtak, 124001, Haryana, India
| | - S Senthil Kumaran
- Department of NMR, All India Institute of Medical Sciences, Ansari Nagar, 110029, New Delhi, India
| | - Chandan Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039 Assam, India.
| |
Collapse
|
25
|
Chowdhury MSI, Kras EA, Turowski SG, Spernyak JA, Morrow JR. Liposomal MRI probes containing encapsulated or amphiphilic Fe(III) coordination complexes. Biomater Sci 2023; 11:5942-5954. [PMID: 37470467 DOI: 10.1039/d3bm00029j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Liposomes containing high-spin Fe(III) coordination complexes were prepared towards the production of T1 MRI probes with improved relaxivity. The amphiphilic Fe(III) complexes were anchored into the liposome with two alkyl chains to give a coordination sphere containing mixed amide and hydroxypropyl pendant groups. The encapsulated complex contains a macrocyclic ligand with three phosphonate pendants, [Fe(NOTP)]3-, which was chosen for its good aqueous solubility. Four types of MRI probes were prepared including those with intraliposomal Fe(III) complex (LipoA) alone, amphiphilic Fe(III) complex (LipoB), both intraliposomal and amphiphilic complex (LipoC) or micelles formed with amphiphilic complex. Water proton relaxivities r1 and r2 were measured and compared to a small molecule macrocyclic Fe(III) complex containing similar donor groups. Micelles of the amphiphilic Fe(III) complex had proton relaxivity values (r1 = 2.6 mM-1 s-1) that were four times higher than the small hydrophilic analog. Liposomes with amphiphilic Fe(III) complex (LipoB) have a per iron relaxivity of 2.6 mM-1 s-1 at pH 7.2, 34 °C at 1.4 T whereas liposomes containing both amphiphilic and intraliposomal Fe(III) complexes (lipoC) have r1 of 0.58 mM-1 s-1 on a per iron basis consistent with quenching of the interior Fe(III) complex relaxivity. Liposomes containing only encapsulated [Fe(NOTP)]3- have a lowered r1 of 0.65 mM-1 s-1 per iron complex. Studies show that the biodistribution and clearance of the different types liposomal nanoparticles differ greatly. LipoB is a blood pool agent with a long circulation time whereas lipoC is cleared more rapidly through both renal and hepatobiliary pathways. These clearance differences are consistent with lower stability of LipoC compared to LipoB.
Collapse
Affiliation(s)
- Md Saiful I Chowdhury
- Department of Chemistry, University at Buffalo, The State University of New York, Amherst, NY 14260, USA.
| | - Elizabeth A Kras
- Department of Chemistry, University at Buffalo, The State University of New York, Amherst, NY 14260, USA.
| | - Steven G Turowski
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14263, USA
| | - Joseph A Spernyak
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14263, USA
| | - Janet R Morrow
- Department of Chemistry, University at Buffalo, The State University of New York, Amherst, NY 14260, USA.
| |
Collapse
|
26
|
McRae SW, Cleary M, DeRoche D, Martinez FM, Xia Y, Caravan P, Gale EM, Ronald JA, Scholl TJ. Development of a Suite of Gadolinium-Free OATP1-Targeted Paramagnetic Probes for Liver MRI. J Med Chem 2023; 66:6567-6576. [PMID: 37159947 DOI: 10.1021/acs.jmedchem.2c01561] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Five amphiphilic, anionic Mn(II) complexes were synthesized as contrast agents targeted to organic anion transporting polypeptide transporters (OATP) for liver magnetic resonance imaging (MRI). The Mn(II) complexes are synthesized in three steps, each from the commercially available trans-1,2-diaminocyclohexane-N,N,N',N'-tetraacetic acid (CDTA) chelator, with T1-relaxivity of complexes ranging between 2.3 and 3.0 mM-1 s-1 in phosphate buffered saline at an applied field strength of 3.0 T. Pharmacokinetics were assessed in female BALB/c mice by acquiring T1-weighted images dynamically for 70 min after agent administration and determining contrast enhancement and washout in various organs. Uptake of Mn(II) complexes in human OATPs was investigated through in vitro assays using MDA-MB-231 cells engineered to express either OATP1B1 or OATP1B3 isoforms. Our study introduces a new class of Mn-based OATP-targeted contrast that can be broadly tuned via simple synthetic protocols.
Collapse
Affiliation(s)
- Sean W McRae
- Department of Medical Biophysics, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Michael Cleary
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Daniel DeRoche
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Francisco M Martinez
- Imaging Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Ying Xia
- Imaging Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Peter Caravan
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - Eric M Gale
- The Athinoula A. Martinos Center for Biomedical Imaging, The Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts 02129, United States
| | - John A Ronald
- Department of Medical Biophysics, University of Western Ontario, London, Ontario N6A 3K7, Canada
- Imaging Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 3K7, Canada
- Lawson Health Research Institute, London, Ontario N6A 3K7, Canada
| | - Timothy J Scholl
- Department of Medical Biophysics, University of Western Ontario, London, Ontario N6A 3K7, Canada
- Imaging Laboratories, Robarts Research Institute, University of Western Ontario, London, Ontario N6A 3K7, Canada
- Department of Physics and Astronomy, University of Western Ontario, London, Ontario N6A 3K7, Canada
- Ontario Institute for Cancer Research, Toronto, Ontario M5G 0A3, Canada
| |
Collapse
|
27
|
Fedorenko S, Stepanov A, Bochkova O, Kholin K, Nizameev I, Voloshina A, Tyapkina O, Samigullin D, Kleshnina S, Akhmadeev B, Romashchenko A, Zavjalov E, Amirov R, Mustafina A. Specific nanoarchitecture of silica nanoparticles codoped with the oppositely charged Mn 2+ and Ru 2+ complexes for dual paramagnetic-luminescent contrasting effects. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 49:102665. [PMID: 36822334 DOI: 10.1016/j.nano.2023.102665] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/24/2023]
Abstract
The silica nanoparticles (SNs) co-doped with paramagnetic ([Mn(HL)]n-,) and luminescent ([Ru(dipy)3]2+) complexes are represented. The specific distribution of [Mn(HL)]n- within the SNs allows to achieve about ten-fold enhancing in magnetic relaxivities in comparison with those of [Mn(HL)]n- in solutions. The leaching of [Mn(HL)]n- from the shell can be minimized through the co-doping of [Ru(dipy)3]2+ into the core of the SNs. The co-doped SNs exhibit colloid stability in aqueous solutions, including those modeling a blood serum. The surface of the co-doped SNs was also decorated by amino- and carboxy-groups. The cytotoxicity, hemoagglutination and hemolytic activities of the co-doped SNs are on the levels convenient for "in vivo" studies, although the amino-decorated SNs cause more noticeable agglutination and suppression of cell viability. The co-doped SNs being intravenously injected into mice allows to reveal their biodistribution in both ex vivo and in vivo conditions through confocal microscopy and magnetic resonance imaging correspondingly.
Collapse
Affiliation(s)
- Svetlana Fedorenko
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088 Kazan, Russia.
| | - Alexey Stepanov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088 Kazan, Russia
| | - Olga Bochkova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088 Kazan, Russia
| | - Kirill Kholin
- Kazan National Research Technological University, 68, K. Marx str., 420015 Kazan, Russia
| | - Irek Nizameev
- Kazan National Research Technological University, 68, K. Marx str., 420015 Kazan, Russia
| | - Alexandra Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088 Kazan, Russia
| | - Oksana Tyapkina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski str., 420111 Kazan, Russia
| | - Dmitry Samigullin
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, 2/31 Lobachevski str., 420111 Kazan, Russia; Kazan National Research Technical University named after A.N. Tupolev - KAI, 10 K. Marx str., 420111 Kazan, Russia
| | - Sofiya Kleshnina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088 Kazan, Russia
| | - Bulat Akhmadeev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088 Kazan, Russia
| | - Alexander Romashchenko
- Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Evgenii Zavjalov
- Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - Rustem Amirov
- Kazan (Volga region) Federal University, 18 Kremlyovskaya str., 420008 Kazan, Russia
| | - Asiya Mustafina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str., 8, 420088 Kazan, Russia
| |
Collapse
|
28
|
Kotková Z, Koucký F, Kotek J, Císařová I, Parker D, Hermann P. Copper(II) complexes of cyclams with N-(2,2,2-trifluoroethyl)-aminoalkyl pendant arms as potential probes for 19F magnetic resonance imaging. Dalton Trans 2023; 52:1861-1875. [PMID: 36448539 DOI: 10.1039/d2dt03360g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A series of Cu(II) complexes with cyclam-based ligands containing two N-(2,2,2-trifluoroethyl)-aminoalkyl pendant arms in 1,8-positions (L1: 1,2-ethylene spacer, L2: 1,3-propylene spacer; L3: 1,4-butylene spacer) was studied in respect to potential use as contrast agents for 19F magnetic resonance imaging (MRI). A number of structures of the complexes as well as of several organic precursors were determined by single-crystal X-ray diffraction analysis. Geometric parameters (especially distances between fluorine atoms and the central metal ion) were determined for each complex and the identity of isomeric complex species present in solution was established. The NMR longitudinal relaxation times (T1) of 19F nuclei in the ligands at clinically relevant fields and temperatures (1-2 s) were significantly shortened upon Cu(II) binding to 7-10 ms for [Cu(L1)]2+, 20-30 ms for [Cu(L2)]2+ and 20-50 ms for [Cu(L3)]2+. The trend of the relaxation time shortening is in accordance with the distance and number of chemical bonds between fluorine atoms and the Cu(II) ion. The signals show promising T2*/T1 ratios in the range 0.25-0.55, assuring their good applicability to 19F NMR/MRI. The results show that even the Cu(II) ion, with a small magnetic moment, causes significant relaxation enhancement with a long-range effect and can be considered as a highly suitable metal ion for efficient 19F MRI contrast agents.
Collapse
Affiliation(s)
- Zuzana Kotková
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 42 Prague 2, Czech Republic.
| | - Filip Koucký
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 42 Prague 2, Czech Republic.
| | - Jan Kotek
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 42 Prague 2, Czech Republic.
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 42 Prague 2, Czech Republic.
| | - David Parker
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong
| | - Petr Hermann
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 42 Prague 2, Czech Republic.
| |
Collapse
|
29
|
Gautam RN, Tiwari A, Gupta S, Bharty M, Ganesan V, Kumar S, Bharti P, Butcher R. Mn(II) complexes of 1,4-methoxy benzoyl-4-phenyl-3-thiosemicarbazide containing o-phenanthroline and 2,2-bipyridine as co-ligands: Synthesis, crystal structure, spectral characterization, photoluminescence and electrochemical studies. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
30
|
Leone L, Anemone A, Carella A, Botto E, Longo DL, Tei L. A Neutral and Stable Macrocyclic Mn(II) Complex for MRI Tumor Visualization. ChemMedChem 2022; 17:e202200508. [PMID: 36198652 PMCID: PMC10092550 DOI: 10.1002/cmdc.202200508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/05/2022] [Indexed: 01/14/2023]
Abstract
A stable and inert amphiphilic Mn(II) complex based on a bisamide derivative of 1,4-DO2A (DO2A=tetraazacyclododecane-1,4-diacetic acid) was synthesized and its 1 H NMR relaxometric behavior was investigated as a function of the magnetic field strength, pH and temperature. The interaction with human serum albumin (HSA) was also studied via relaxometry showing a good relaxivity enhancement at low field (at 1T and 298 K the relaxivity increases from 4.5 mM-1 s-1 of the Mn(II)-complex to 14.0 mM-1 s-1 of the complex-HSA supramolecular adduct). In vivo biodistribution and MRI studies highlighted a rapid and mixed renal/liver elimination without spleen accumulation from healthy mice and good contrast enhancing properties in a breast tumor murine model. A comparison with a clinically approved Gd(III) agent (GdBOPTA, Multihance®) underlined that the proposed Mn(II) contrast agent gave comparable tumor contrast enhancement up to 3 hours post-injection.
Collapse
Affiliation(s)
- Loredana Leone
- Department Science and Technological Innovation, University of Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
| | - Annasofia Anemone
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza, 52, 10126, Torino, Italy
| | - Antonella Carella
- Institute of Biostructures and Bioimaging (IBB), National Research Council of Italy (CNR), Via Nizza, 52, 10126, Torino, Italy
| | - Elena Botto
- Institute of Biostructures and Bioimaging (IBB), National Research Council of Italy (CNR), Via Nizza, 52, 10126, Torino, Italy
| | - Dario Livio Longo
- Institute of Biostructures and Bioimaging (IBB), National Research Council of Italy (CNR), Via Nizza, 52, 10126, Torino, Italy
| | - Lorenzo Tei
- Department Science and Technological Innovation, University of Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
| |
Collapse
|
31
|
Ndiaye D, Cieslik P, Wadepohl H, Pallier A, Même S, Comba P, Tóth É. Mn 2+ Bispidine Complex Combining Exceptional Stability, Inertness, and MRI Efficiency. J Am Chem Soc 2022; 144:22212-22220. [PMID: 36445192 DOI: 10.1021/jacs.2c10108] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
As an essential metal ion and an efficient relaxation agent, Mn2+ holds a great promise to replace Gd3+ in magnetic resonance imaging (MRI) contrast agent applications, if its stable and inert complexation can be achieved. Toward this goal, four pyridine and one carboxylate pendants have been introduced in coordinating positions on the bispidine platform to yield ligand L3. Thanks to its rigid and preorganized structure and perfect size match for Mn2+, L3 provides remarkably high thermodynamic stability (log KMnL = 19.47), selectivity over the major biological competitor Zn2+ (log(KMnL/KZnL) = 4.4), and kinetic inertness. Solid-state X-ray data show that [MnL3(MeOH)](OTf)2 has an unusual eight-coordinate structure with a coordinated solvent molecule, in contrast to the six-coordinate structure of [ZnL3](OTf), underlining that the coordination cavity is perfectly adapted for Mn2+, while it is too large for Zn2+. In aqueous solution, 17O NMR data evidence one inner sphere water and dissociatively activated water exchange (kex298 = 13.5 × 107 s-1) for MnL3. Its water proton relaxivity (r1 = 4.44 mM-1 s-1 at 25 °C, 20 MHz) is about 30% higher than values for typical monohydrated Mn2+ complexes, which is related to its larger molecular size; its relaxation efficiency is similar to that of clinically used Gd3+-based agents. In vivo MRI experiments realized in control mice at 0.02 mmol/kg injected dose indicate good signal enhancement in the kidneys and fast renal clearance. Taken together, MnL3 is the first chelate that combines such excellent stability, selectivity, inertness and relaxation properties, all of primary importance for MRI use.
Collapse
Affiliation(s)
- Daouda Ndiaye
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Patrick Cieslik
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120 Heidelberg, Germany
| | - Agnès Pallier
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Sandra Même
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Peter Comba
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120 Heidelberg, Germany.,Interdisciplinary Center for Scientific Computing, Universität Heidelberg, INF 205, D-69120 Heidelberg, Germany
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| |
Collapse
|
32
|
Daksh S, Kaul A, Deep S, Datta A. Current advancement in the development of manganese complexes as magnetic resonance imaging probes. J Inorg Biochem 2022; 237:112018. [PMID: 36244313 DOI: 10.1016/j.jinorgbio.2022.112018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/14/2022] [Accepted: 09/28/2022] [Indexed: 01/18/2023]
Abstract
Emerging non-invasive molecular imaging modalities can detect a pathophysiological state at the molecular level before any anatomic changes are observed. Magnetic resonance imaging (MRI) is preferred over other nuclear imaging techniques owing to its radiation-free approach. Conventionally, most MRI contrast agents employed predominantly involve lanthanide metal: Gadolinium (Gd) until the discovery of associated severe nephrogenic toxicity issues. This limitation led a way to the development of manganese-based contrast agents which offer similar positive contrast enhancement capability. A vast quantity of experimental data has been accumulated over the last decade to define the physicochemical characteristics of manganese chelates with various ligand scaffolds. One can now observe how the ligand configurations, rigidity, and donor-acceptor characteristics impact the stability of the complex. This review covers the current trends in the development of manganese-based MRI contrast agents, the mechanisms they are based on and design considerations for newer manganese-based contrast agents with higher diagnostic strength along with better safety profiles.
Collapse
Affiliation(s)
- Shivani Daksh
- Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organization, Brig S. K. Mazumdar Marg, Delhi 110054, India; Department of Chemistry, Indian Institute of Technology, Hauz-Khas, New Delhi 110016, India
| | - Ankur Kaul
- Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organization, Brig S. K. Mazumdar Marg, Delhi 110054, India
| | - Shashank Deep
- Department of Chemistry, Indian Institute of Technology, Hauz-Khas, New Delhi 110016, India.
| | - Anupama Datta
- Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organization, Brig S. K. Mazumdar Marg, Delhi 110054, India.
| |
Collapse
|
33
|
MRI Contrast Agents in Glycobiology. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238297. [PMID: 36500389 PMCID: PMC9735696 DOI: 10.3390/molecules27238297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022]
Abstract
Molecular recognition involving glycoprotein-mediated interactions is ubiquitous in both normal and pathological natural processes. Therefore, visualization of these interactions and the extent of expression of the sugars is a challenge in medical diagnosis, monitoring of therapy, and drug design. Here, we review the literature on the development and validation of probes for magnetic resonance imaging using carbohydrates either as targeting vectors or as a target. Lectins are important targeting vectors for carbohydrate end groups, whereas selectins, the asialoglycoprotein receptor, sialic acid end groups, hyaluronic acid, and glycated serum and hemoglobin are interesting carbohydrate targets.
Collapse
|
34
|
Li Y, Xia Q, Zhu C, Cao W, Xia Z, Liu X, Xiao B, Chen K, Liu Y, Zhong L, Tan B, Lei J, Zhu J. An activatable Mn(II) MRI probe for detecting peroxidase activity in vitro and in vivo. J Inorg Biochem 2022; 236:111979. [PMID: 36087435 DOI: 10.1016/j.jinorgbio.2022.111979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 12/15/2022]
Abstract
Myeloperoxidase (MPO), a hallmark of the function and activation of innate immune cells, can act as a 'double-edged sword', contributing to clear infection as well as causing tissue oxidizing damage in various inflammatory diseases. In this study, an activatable Mn(II) chelate-based magnetic resonance imaging (MRI) contrast agent (CA), Mn-TyEDTA (TyEDTA = tyrosine derived ethylenediaminetetraacetic acid) structurally featuring a phenol group as the electron-donor, was developed to sense the activity of peroxidase in vitro and in vivo. Mn-TyEDTA demonstrated a peroxidase activity-dependent relaxivity in the presence of horseradish peroxidase (HRP)/H2O2 with more than a 2.6-fold increase in water proton relaxivity produced (HRP, 500 U; H2O2, 4.5 eq). A mechanism of peroxidase-mediated Mn(II) monomer radical polymerization was confirmed with those oligomers of Mn-TyEDTA such as dimer, trimer and tetramer were found in the LC-MS study. Dynamic MR imaging of normal mice revealed rapid blood clearance and mixed renal and hepatobiliary elimination of Mn-TyEDTA. Furthermore, compared to liver-specific and non-specific extracellular contrast agents (Mn-BnO-TyEDTA (BnO-TyEDTA = benzyl tyrosine-derived ethylenediaminetetraacetic acid) and Gd-DTPA (DTPA = diethylene triamine penta-acetic acid)), MRI on a monosodium urate (MSU) crystal-induced acute mice model of arthritis showed that inflamed tissues could be selectively enhanced by Mn-TyEDTA, suggesting that this peroxidase-activatable Mn(II) MRI probe could potentially be used for noninvasive detection of MPO activity in vivo.
Collapse
Affiliation(s)
- Yunhe Li
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China; School of Pharmacy, North Sichuan Medical College, Fujiang Road 234, Nanchong City, Sichuan 637000, China
| | - Qian Xia
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Chunrong Zhu
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Weidong Cao
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China; School of Pharmacy, North Sichuan Medical College, Fujiang Road 234, Nanchong City, Sichuan 637000, China
| | - Zhiyang Xia
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Xinxin Liu
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Bin Xiao
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Keyu Chen
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China; School of Pharmacy, North Sichuan Medical College, Fujiang Road 234, Nanchong City, Sichuan 637000, China
| | - Yun Liu
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Lei Zhong
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Bangxian Tan
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China
| | - Jun Lei
- School of Pharmacy, North Sichuan Medical College, Fujiang Road 234, Nanchong City, Sichuan 637000, China.
| | - Jiang Zhu
- Sichuan Key Laboratory of Medical Imaging, Department of Oncology, and Department of Pharmacy, Affiliated Hospital of North Sichuan Medical College, Maoyuan Road 1, Nanchong City, Sichuan 637000, China; School of Pharmacy, North Sichuan Medical College, Fujiang Road 234, Nanchong City, Sichuan 637000, China.
| |
Collapse
|
35
|
Xu Y, Li C, Wu X, Li MX, Ma Y, Yang H, Zeng Q, Sessler JL, Wang ZX. Sheet-like 2D Manganese(IV) Complex with High Photothermal Conversion Efficiency. J Am Chem Soc 2022; 144:18834-18843. [PMID: 36201849 DOI: 10.1021/jacs.2c04734] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report a stable, water-soluble, mononuclear manganese(IV) complex [MnIV(H2L)]·5H2O (Mn-HDCL) that acts as an efficient photothermal material. This system is based on a hexahydrazide clathrochelate ligand (L/HDCL) and is obtained via an efficient one-pot templated synthesis that avoids the need for harsh reaction conditions. Scanning tunneling microscopy images reveal that Mn-HDCL exists as a 2D sheet-like structure. In Mn-HDCL, the manganese(IV) ion is trapped within the cavity of the cage-like ligand. This effectively shields the Mn(IV) ion from the external environment while providing adequate water solubility. As a result of orbital transitions involving the coordinated manganese(IV) ion, as well as metal-to-ligand charge transfer effects, Mn-HDCL possesses a large extinction coefficient and displays a photothermal performance comparable to single-wall carbon nanotubes in the solid state. A high photothermal conversion efficiency (ca. 71%) was achieved in aqueous solution when subjected to near-infrared 730 nm laser photo-irradiation. Mn-HDCL is paramagnetic and provides a modest increase in the T1-weighted contrast of magnetic resonance images both in vitro and in vivo. Mn-HDCL was found to target tumors passively and allow tumor margins to be distinguished in vivo in a mouse model. In addition, it also exhibited an efficient laser-triggered photothermal therapy effect in vitro and in vivo. We thus propose that Mn-HDCL could have a role to play as a tumor-targeting photothermal sensitizer.
Collapse
Affiliation(s)
- Ye Xu
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Chao Li
- Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Xiaoyu Wu
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Ming-Xing Li
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Yunsheng Ma
- Jiangsu Key Laboratory of Advanced Functional Materials, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, China
| | - Hong Yang
- Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Jonathan L Sessler
- Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712-1224, Unites States
| | - Zhao-Xi Wang
- School of Materials Science and Engineering, Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, Shanghai 200444, China
| |
Collapse
|
36
|
Morrow JR, Raymond JJ, Chowdhury MSI, Sahoo PR. Redox-Responsive MRI Probes Based on First-Row Transition-Metal Complexes. Inorg Chem 2022; 61:14487-14499. [PMID: 36067522 DOI: 10.1021/acs.inorgchem.2c02197] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The presence of multiple oxidation and spin states of first-row transition-metal complexes facilitates the development of switchable MRI probes. Redox-responsive probes capitalize on a change in the magnetic properties of the different oxidation states of the paramagnetic metal ion center upon exposure to biological oxidants and reductants. Transition-metal complexes that are useful for MRI can be categorized according to whether they accelerate water proton relaxation (T1 or T2 agents), induce paramagnetic shifts of 1H or 19F resonances (paraSHIFT agents), or are chemical exchange saturation transfer (CEST) agents. The various oxidation state couples and their properties as MRI probes are summarized with a focus on Co(II)/Co(III) or Fe(II)/Fe(III) complexes as small molecules or as liposomal agents. Solution studies of these MRI probes are reviewed with an emphasis on redox changes upon treatment with oxidants or with enzymes that are physiologically important in inflammation and disease. Finally, we outline the challenges of developing these probes further for in vivo MRI applications.
Collapse
Affiliation(s)
- Janet R Morrow
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Jaclyn J Raymond
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Md Saiful I Chowdhury
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Priya Ranjan Sahoo
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| |
Collapse
|
37
|
Uzal-Varela R, Rodríguez-Rodríguez A, Wang H, Esteban-Gómez D, Brandariz I, Gale EM, Caravan P, Platas-Iglesias C. Prediction of Gd(III) complex thermodynamic stability. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214606] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
38
|
Uzal-Varela R, Pérez-Fernández F, Valencia L, Rodríguez-Rodríguez A, Platas-Iglesias C, Caravan P, Esteban-Gómez D. Thermodynamic Stability of Mn(II) Complexes with Aminocarboxylate Ligands Analyzed Using Structural Descriptors. Inorg Chem 2022; 61:14173-14186. [PMID: 35994514 PMCID: PMC9455602 DOI: 10.1021/acs.inorgchem.2c02364] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
We present a quantitative analysis of the thermodynamic
stabilities
of Mn(II) complexes, defined by the equilibrium constants (log KMnL values) and the values of pMn obtained as
−log[Mn]free for total metal and ligand concentrations
of 1 and 10 μM, respectively. We used structural descriptors
to analyze the contributions to complex stability of different structural
motifs in a quantitative way. The experimental log KMnL and pMn values can be predicted to a good accuracy
by adding the contributions of the different motifs present in the
ligand structure. This allowed for the identification of features
that provide larger contributions to complex stability, which will
be very helpful for the design of efficient chelators for Mn(II) complexation.
This issue is particularly important to develop Mn(II) complexes for
medical applications, for instance, as magnetic resonance imaging
(MRI) contrast agents. The analysis performed here also indicates
that coordination number eight is more common for Mn(II) than is generally
assumed, with the highest log KMnL values generally observed for hepta- and octadentate ligands. The
X-ray crystal structure of [Mn2(DOTA)(H2O)2], in which eight-coordinate [Mn(DOTA)]2– units are bridged by six-coordinate exocyclic Mn(II) ions, is also
reported. We present empirical relationships
that allow estimating
the log K and pMn values of Mn(II) complexes
relevant as contrast agents for magnetic resonance imaging (MRI).
The prediction of complex stability with these expressions relies
on structural descriptors, providing a very powerful tool to aid with
ligand design.
Collapse
Affiliation(s)
- Rocío Uzal-Varela
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Galicia, Spain
| | - Francisco Pérez-Fernández
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Galicia, Spain
| | - Laura Valencia
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende, 36310 Pontevedra, Spain
| | - Aurora Rodríguez-Rodríguez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Galicia, Spain
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Galicia, Spain
| | - Peter Caravan
- The Institute for Innovation in Imaging and the A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, 149, 13th Street, Suite 2301, Charlestown, Massachusetts 02129, United States
| | - David Esteban-Gómez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071 A Coruña, Galicia, Spain
| |
Collapse
|
39
|
Akhmadeev BS, Nizameev IR, Kholin KV, Voloshina AD, Gerasimova TP, Gubaidullin AT, Kadirov MK, Ismaev IE, Brylev KA, Zairov RR, Mustafina AR. Molecular and Nano-Structural Optimization of Nanoparticulate Mn2+-Hexarhenium Cluster Complexes for Optimal Balance of High T1- and T2-Weighted Contrast Ability with Low Hemoagglutination and Cytotoxicity. Pharmaceutics 2022; 14:pharmaceutics14071508. [PMID: 35890403 PMCID: PMC9316779 DOI: 10.3390/pharmaceutics14071508] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/06/2022] [Accepted: 07/14/2022] [Indexed: 11/30/2022] Open
Abstract
The present work introduces rational design of nanoparticulate Mn(II)-based contrast agents through both variation of the μ3 (inner) ligands within a series of hexarhenium cluster complexes [{Re6(μ3-Q)8}(CN)6]4− (Re6Q8, Q = S2−, Se2− or Te2−) and interfacial decoration of the nanoparticles (NPs) K4−2xMnxRe6Q8 (x = 1.3 − 1.8) by a series of pluronics (F-68, P-123, F-127). The results highlight an impact of the ligand and pluronic for the optimal colloid behavior of the NPs allowing high colloid stability in ambient conditions and efficient phase separation under the centrifugation. It has been revealed that the K4−2xMnxRe6Se8 NPs and those decorated by F-127 are optimal from the viewpoint of magnetic relaxivities r1 and r2 (8.9 and 10.9 mM−1s−1, respectively, at 0.47 T) and low hemoagglutination activity. The insignificant leaching of Mn2+ ions from the NPs correlates with their insignificant effect on the cell viability of both M-HeLa and Chang Liver cell lines. The T1- and T2-weighted contrast ability of F-127–K4−2xMnxRe6Q8 NPs was demonstrated through the measurements of phantoms at whole body 1.5 T scanner.
Collapse
Affiliation(s)
- Bulat Salavatovich Akhmadeev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
- Correspondence:
| | - Irek R. Nizameev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Kirill V. Kholin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Alexandra D. Voloshina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Tatyana P. Gerasimova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Aidar T. Gubaidullin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Marsil K. Kadirov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Ildus E. Ismaev
- Department of Electronic Instrumentation and Quality Management, A.N. Tupolev Kazan Research Technological University, 420015 Kazan, Russia;
| | - Konstantin A. Brylev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russia;
| | - Rustem R. Zairov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Asiya R. Mustafina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| |
Collapse
|
40
|
Torabi M, Yaghoobi F, Shervedani RK, Kefayat A, Ghahremani F, Harsini PR. Mn(II) & Gd(III) Deferrioxamine Complex Contrast Agents & Temozolomide Cancer Prodrug Immobilized on Folic Acid Targeted Graphene/Polyacrylic Acid Nanocarrier: MRI Efficiency, Drug Stability & Interactions with Cancer Cells. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
41
|
Kras EA, Snyder EM, Sokolow GE, Morrow JR. Distinct Coordination Chemistry of Fe(III)-Based MRI Probes. Acc Chem Res 2022; 55:1435-1444. [PMID: 35482819 DOI: 10.1021/acs.accounts.2c00102] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
ConspectusContrast agents are used in approximately 40% of all magnetic resonance imaging (MRI) procedures to improve the quality of the images based on the distribution and dynamic clearance of the agent. To date, all clinically approved contrast agents are Gd(III) coordination complexes that serve to shorten the longitudinal (T1) and transverse (T2) proton relaxation times of water. Recent interest in replacing Gd with biologically relevant metal ions such as Mn or Fe has led to increased interest in the aqueous coordination chemistry of their complexes. In this Account, we focus on high-spin Fe(III) complexes that have been recently reported as MRI contrast agents or probes in our laboratory.The highly Lewis acidic Fe(III) center has distinct coordination chemistry in aqueous solutions, facilitating alternative strategies in the design of MRI probes. To illustrate this, we describe different classes of Fe(III) MRI probes with a focus on macrocyclic complexes and multinuclear complexes such as self-assembled metal organic polyhedra (MOP). Our initial efforts focused on macrocyclic complexes of Fe(III) in order to tune spin and oxidation states with the goal of stabilizing high-spin Fe(III) in reducing biological environments. Our probes feature six-coordinate Fe(III) complexes of 1,4,7-triazacyclononane with hydroxypropyl, phosphonate, or carboxylate pendant groups to produce Fe(III) complexes that shorten proton T1 times predominantly from second-sphere or outer-sphere interactions at neutral pH. Analogues with pentadentate macrocyclic ligands have an inner-sphere water that does not exchange rapidly on the NMR time scale, yet these complexes are effective relaxation agents. Fe(III) macrocyclic complexes in this class can be modified to modulate their biodistribution and pharmacokinetic clearance in mice. The goal of these studies is for the Fe(III) agents to clear as extracellular fluid agents and produce profiles similar to those of Gd agents. Finally, studies of multimeric Fe(III) complexes are of interest to produce probes that give large proton relaxivity. In this approach the two Fe(III) centers are connected through aryl linkers as demonstrated for several macrocyclic complexes. Even more tightly connected Fe(III) centers are produced in a Fe(III) self-assembled cage with relaxivity of 21 mM-1 s-1 at 4.7 T, 37 °C in the presence of serum albumin to which it is tightly bound. This cage enhances contrast of the vasculature as a blood pool agent and accumulates in tumors. Finally, we present our perspectives on the further development of Fe(III) complexes for various applications in MRI.
Collapse
Affiliation(s)
- Elizabeth A. Kras
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Eric M. Snyder
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Gregory E. Sokolow
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| | - Janet R. Morrow
- Department of Chemistry, University at Buffalo, the State University of New York, Amherst, New York 14260, United States
| |
Collapse
|
42
|
Sguizzato M, Martini P, Marvelli L, Pula W, Drechsler M, Capozza M, Terreno E, Del Bianco L, Spizzo F, Cortesi R, Boschi A. Synthetic and Nanotechnological Approaches for a Diagnostic Use of Manganese. Molecules 2022; 27:molecules27103124. [PMID: 35630601 PMCID: PMC9146667 DOI: 10.3390/molecules27103124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 02/04/2023] Open
Abstract
The development of multimodal imaging techniques such as positron emission tomography (PET) and magnetic resonance imaging (MRI) allows the contemporary obtaining of metabolic and morphological information. To fully exploit the complementarity of the two imaging modalities, the design of probes displaying radioactive and magnetic properties at the same time could be very beneficial. In this regard, transition metals offer appealing options, with manganese representing an ideal candidate. As nanosized imaging probes have demonstrated great value for designing advanced diagnostic/theranostic procedures, this work focuses on the potential of liposomal formulations loaded with a new synthesized paramagnetic Mn(II) chelates. Negatively charged liposomes were produced by thin-layer hydration method and extrusion. The obtained formulations were characterized in terms of size, surface charge, efficiency of encapsulation, stability over time, relaxivity, effective magnetic moment, and in vitro antiproliferative effect on human cells by means of the MTT assay. The negatively charged paramagnetic liposomes were monodisperse, with an average hydrodynamic diameter not exceeding 200 nm, and they displayed good stability and no cytotoxicity. As determined by optical emission spectroscopy, manganese complexes are loaded almost completely on liposomes maintaining their paramagnetic properties.
Collapse
Affiliation(s)
- Maddalena Sguizzato
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, 44121 Ferrara, Italy; (M.S.); (W.P.); (A.B.)
- Biotechnology Interuniversity Consortium, Ferrara Section, University of Ferrara, 44121 Ferrara, Italy
| | - Petra Martini
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy;
- INFN—Laboratori Nazionali Legnaro, National Institute of Nuclear Physics, Viale dell’Università, 2, 35020 Legnaro, Italy
| | - Lorenza Marvelli
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, 44121 Ferrara, Italy; (M.S.); (W.P.); (A.B.)
- Correspondence: (L.M.); (R.C.)
| | - Walter Pula
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, 44121 Ferrara, Italy; (M.S.); (W.P.); (A.B.)
| | - Markus Drechsler
- Key Lab “Electron and Optical Microscopy”, Bavarian Polymer Institute (BPI), University of Bayreuth, 95440 Bayreuth, Germany;
| | - Martina Capozza
- Molecular & Preclinical Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Torino, 10126 Torino, Italy; (M.C.); (E.T.)
| | - Enzo Terreno
- Molecular & Preclinical Imaging Center, Department of Molecular Biotechnologies and Health Sciences, University of Torino, 10126 Torino, Italy; (M.C.); (E.T.)
| | - Lucia Del Bianco
- Department of Physics and Earth Science, University of Ferrara, 44122 Ferrara, Italy; (L.D.B.); (F.S.)
| | - Federico Spizzo
- Department of Physics and Earth Science, University of Ferrara, 44122 Ferrara, Italy; (L.D.B.); (F.S.)
| | - Rita Cortesi
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, 44121 Ferrara, Italy; (M.S.); (W.P.); (A.B.)
- INFN—Laboratori Nazionali Legnaro, National Institute of Nuclear Physics, Viale dell’Università, 2, 35020 Legnaro, Italy
- Correspondence: (L.M.); (R.C.)
| | - Alessandra Boschi
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DoCPAS), University of Ferrara, 44121 Ferrara, Italy; (M.S.); (W.P.); (A.B.)
| |
Collapse
|
43
|
Carniato F, Ricci M, Tei L, Garello F, Terreno E, Ravera E, Parigi G, Luchinat C, Botta M. High Relaxivity with No Coordinated Waters: A Seemingly Paradoxical Behavior of [Gd(DOTP)] 5- Embedded in Nanogels. Inorg Chem 2022; 61:5380-5387. [PMID: 35316037 PMCID: PMC8985129 DOI: 10.1021/acs.inorgchem.2c00225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Nanogels (NGs) obtained
by electrostatic interactions between chitosan
and hyaluronic acid and comprising paramagnetic Gd chelates are gaining
increasing attention for their potential application in magnetic resonance
bioimaging. Herein, the macrocyclic complexes [Gd(DOTP)]5−, lacking metal-bound water molecules (q = 0), were
confined or used as a cross-linker in this type of NG. Unlike the
typical behavior of Gd complexes with q = 0, a remarkable
relaxivity value of 78.0 mM–1 s–1 was measured at 20 MHz and 298 K, nearly 20 times greater than that
found for the free complex. A careful analysis of the relaxation data
emphasizes the fundamental role of second sphere water molecules with
strong and long-lived hydrogen bonding interactions with the complex.
Finally, PEGylated derivatives of nanoparticles were used for the
first in vivo magnetic resonance imaging study of
this type of NG, revealing a fast renal excretion of paramagnetic
complexes after their release from the NGs. Nanogels incorporating [Gd(DOTP)]5− complexes
(q = 0) exhibit remarkable relaxivity values, thanks
to structured water molecules in the second coordination shell of
the metal ion involved in strong H-bonding interactions with the phosphonate
groups.
Collapse
Affiliation(s)
- Fabio Carniato
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Marco Ricci
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Lorenzo Tei
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale Teresa Michel 11, Alessandria 15121, Italy
| | - Francesca Garello
- Molecular Imaging Centre, Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, Torino 10126, Italy
| | - Enzo Terreno
- Molecular Imaging Centre, Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, Torino 10126, Italy
| | - Enrico Ravera
- Magnetic Resonance Center (CERM), University of Florence, via Sacconi 6, Sesto Fiorentino 50019, Italy.,Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy.,Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), via Sacconi 6, Sesto Fiorentino 50019, Italy
| | - Giacomo Parigi
- Magnetic Resonance Center (CERM), University of Florence, via Sacconi 6, Sesto Fiorentino 50019, Italy.,Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy.,Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), via Sacconi 6, Sesto Fiorentino 50019, Italy
| | - Claudio Luchinat
- Magnetic Resonance Center (CERM), University of Florence, via Sacconi 6, Sesto Fiorentino 50019, Italy.,Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy.,Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), via Sacconi 6, Sesto Fiorentino 50019, Italy
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale Teresa Michel 11, Alessandria 15121, Italy
| |
Collapse
|
44
|
Sokolow GE, Crawley MR, Morphet DR, Asik D, Spernyak JA, McGray AJR, Cook TR, Morrow JR. Metal-Organic Polyhedron with Four Fe(III) Centers Producing Enhanced T 1 Magnetic Resonance Imaging Contrast in Tumors. Inorg Chem 2022; 61:2603-2611. [PMID: 35073060 PMCID: PMC9038074 DOI: 10.1021/acs.inorgchem.1c03660] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A metal-organic polyhedron (MOP) with four paramagnetic Fe(III) centers was studied as a magnetic resonance imaging (MRI) probe. The MOP was characterized in solution by using electron paramagnetic resonance (EPR), UV-visible (UV-vis) spectroscopies, Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry, and in the solid state with single-crystal X-ray diffraction. Water proton T1 relaxation properties were examined in solution and showed significant enhancement in the presence of human serum albumin (HSA). The r1 relaxivities in the absence and presence of HSA were 8.7 mM-1 s-1 and 21 mM-1 s-1, respectively, per molecule (2.2 mM-1 s-1 and 5.3 mM-1 s-1 per Fe) at 4.7 T, 37 °C. In vivo studies of the iron MOP show strong contrast enhancement of the blood pool even at a low dose of 0.025 mmol/kg with prolonged residence in vasculature and clearance through the intestinal tract of mice. The MOP binds strongly to serum albumin and shows comparable accumulation in a murine tumor model as compared to a covalently linked Gd-HSA contrast agent.
Collapse
Affiliation(s)
- Gregory E. Sokolow
- Department of Chemistry, University at Buffalo the State University of New York, Buffalo, NY 14260
| | - Matthew R. Crawley
- Department of Chemistry, University at Buffalo the State University of New York, Buffalo, NY 14260
| | - Daniel R. Morphet
- Department of Chemistry, University at Buffalo the State University of New York, Buffalo, NY 14260
| | - Didar Asik
- Department of Chemistry, University at Buffalo the State University of New York, Buffalo, NY 14260
| | - Joseph A. Spernyak
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263
| | - A. J. Robert McGray
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263
| | - Timothy R. Cook
- Department of Chemistry, University at Buffalo the State University of New York, Buffalo, NY 14260
| | - Janet R. Morrow
- Department of Chemistry, University at Buffalo the State University of New York, Buffalo, NY 14260
| |
Collapse
|
45
|
Cicolari D, Santanni F, Grassi L, Brero F, Filibian M, Recca T, Arosio P, Perfetti M, Mariani M, Sessoli R, Lascialfari A. Longitudinal and transverse NMR relaxivities of Ln(III)-DOTA complexes: A comprehensive investigation. J Chem Phys 2021; 155:214201. [PMID: 34879662 DOI: 10.1063/5.0072185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Longitudinal and transverse 1H nuclear magnetic resonance relaxivities of Ln(III)-DOTA complexes (with Ln = Gd, Tb, Dy, Er; DOTA = 1,4,7,10-tetraazacyclododecane-N,N',N″,N‴-tetraacetic acid) and Mn(II) aqueous solutions were measured in a wide range of frequencies, 10 kHz to 700 MHz. The experimental data were interpreted by means of models derived from the Solomon-Bloembergen-Morgan theory. The data analysis was performed assuming the orbital angular momentum L = 0 for Gd-DOTA and the aqua ion [Mn(H2O)6]2+ and L ≠ 0 for Dy-, Tb-, and Er-DOTA. A refined estimation of the zero-field-splitting barrier Δ and of the modulation correlation time τv was obtained for [Mn(H2O)6]2+ by extending the fitting of nuclear magnetic relaxation dispersion profiles to the low-field regime. The Gd-DOTA fitting parameters resulted in good agreement with the literature, and the fit of transverse relaxivity data confirmed the negligibility of the scalar interaction in the nuclear relaxation mechanism. Larger transverse relaxivities of Dy-DOTA and Tb-DOTA (∼10 mM-1 s-1) with respect to Er-DOTA (∼1 mM-1 s-1) were observed at 16 T. Such higher values are suggested to be due to a shorter residence time τm that is possibly linked to the fluctuations of the hyperfine interaction and the different shape of the magnetic anisotropy. The possible employment of Dy-DOTA, Tb-DOTA, and Er-DOTA as negative magnetic resonance imaging contrast agents for high-field applications was envisaged by collecting spin-echo images at 7 T. Particularly in Dy- and Tb-derivatives, the transverse relaxivity at 16 T is of the order of the Gd-one at 1.5 T.
Collapse
Affiliation(s)
- Davide Cicolari
- Department of Physics, University of Pavia, Via Bassi 6, Pavia (PV) 27100, Italy
| | - Fabio Santanni
- Department of Chemistry, University of Florence, Sesto Fiorentino (FI) 50019, Italy
| | - Leonardo Grassi
- Department of Chemistry, University of Florence, Sesto Fiorentino (FI) 50019, Italy
| | - Francesca Brero
- Department of Physics, University of Pavia, Via Bassi 6, Pavia (PV) 27100, Italy
| | - Marta Filibian
- INFN, Istituto Nazionale di Fisica Nucleare-Pavia Unit, Via Bassi 6, Pavia (PV) 27100, Italy
| | - Teresa Recca
- Centro Grandi Strumenti, University of Pavia, Via Bassi 21, Pavia (PV) 27100, Italy
| | - Paolo Arosio
- Department of Physics, University of Milan, Via Celoria 16, Milan (MI) 20133, Italy
| | - Mauro Perfetti
- Department of Chemistry, University of Florence, Sesto Fiorentino (FI) 50019, Italy
| | - Manuel Mariani
- Department of Physics, University of Pavia, Via Bassi 6, Pavia (PV) 27100, Italy
| | - Roberta Sessoli
- Department of Chemistry, University of Florence, Sesto Fiorentino (FI) 50019, Italy
| | | |
Collapse
|
46
|
Kras EA, Abozeid SM, Eduardo W, Spernyak JA, Morrow JR. Comparison of phosphonate, hydroxypropyl and carboxylate pendants in Fe(III) macrocyclic complexes as MRI contrast agents. J Inorg Biochem 2021; 225:111594. [PMID: 34517167 PMCID: PMC9124524 DOI: 10.1016/j.jinorgbio.2021.111594] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/09/2021] [Accepted: 08/22/2021] [Indexed: 12/11/2022]
Abstract
Fe(III) macrocyclic complexes containing a macrocycle and three pendant groups including phosphonate (NOTP =1,4,7-triazacyclononane-1,4,7-triyl-tris(methylenephosphonic acid), carboxylate (NOTA = 1,4,7 - triazacyclononane - N,N',N″ - triacetate) or hydroxypropyl (NOHP =(2S,2'S,2"S)-1,1',1″-(1,4,7-triazonane-1,4,7-triyl)tris(propan-2-ol)) were studied in order to compare the effect of these donor groups on solution chemistry and water proton relaxivity. All three complexes, Fe(NOTP), Fe(NOHP) and Fe(NOTA), display a large degree of kinetic inertness to dissociation in the presence of phosphate and carbonate, under acidic conditions of 100 mM HCl or 1 M HCl or to trans-metalation with Zn(II). The r1 proton relaxivity of the complexes at 1.4 T, 33 °C is compared over the pH range of 1 to 10. At pH 7.4, 33 °C, 1.4 T, Fe(NOHP) has the largest relaxivity (1.5 mM-1 s-1), Fe(NOTP) is second at 1.0 mM-1 s-1, whereas Fe(NOTA) is the lowest at 0.61 mM-1 s-1. Fe(NOTP), Fe(NOHP) and Fe(NOTA) all show an increase in relaxivity at very acidic pH values (< 3) that is consistent with an acid-catalyzed process. Variable temperature 17O NMR studies at near neutral pH are consistent with the absence of an inner-sphere water molecule for Fe(NOTP) and Fe(NOHP), supporting second-sphere or outer-sphere water contributions to proton relaxation. Fe(NOTP) shows contrast enhancement in T1 weighted MRI studies in mice and clears through a renal pathway.
Collapse
Affiliation(s)
- Elizabeth A Kras
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America
| | - Samira M Abozeid
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America; Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhoria Street, 35516 Mansoura, Egypt
| | - Waldine Eduardo
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America
| | - Joseph A Spernyak
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Institute, Buffalo, New York 14263, United States of America
| | - Janet R Morrow
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, NY 14260, United States of America.
| |
Collapse
|
47
|
Uzal-Varela R, Lalli D, Brandariz I, Rodríguez-Rodríguez A, Platas-Iglesias C, Botta M, Esteban-Gómez D. Rigid versions of PDTA 4- incorporating a 1,3-diaminocyclobutyl spacer for Mn 2+ complexation: stability, water exchange dynamics and relaxivity. Dalton Trans 2021; 50:16290-16303. [PMID: 34730583 DOI: 10.1039/d1dt02498a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Rigid derivatives of the acyclic ligand PDTA4- (H4PDTA = propylenediamine-N,N,N',N'-tetraacetic acid) were prepared by functionalization of a 1,3-diaminocyclobutyl spacer. The new ligands contain either four acetate groups attached to the central scaffold (H4L1) or incorporate pyridyl (H2L2) or propylamide (H2L3) units replacing two of the carboxylate groups. The ligand protonation constants and the stability constants of their Mn2+ complexes were determined using potentiometric and spectrophotometric titrations. The stability of the [Mn(L1)]2- complex was found to be significantly higher than that of the flexible [Mn(PDTA)]2- derivative (log KMnL = 10.78 and 10.01, respectively). A detailed study of the 1H Nuclear Magnetic Relaxation Dispersion (NMRD) profiles and 17O NMR measurements evidence that the [Mn(L1)]2- and [Mn(L2)] complexes display a hydration equilibrium in solution involving a seven-coordinate species with an inner-sphere water molecule and a six-coordinate species that lacks a coordinated water molecule. As a result the 1H relaxivities of these complexes are somewhat lower than that of [Mn(EDTA)]2- and related systems. The introduction of propylamide groups in [Mn(L3)] shifts the hydration equilibrium to the seven-coordinate species, which results in a 1H relaxivity (r1p = 3.7 mM-1 s-1 at 22 MHz and 25 °C) exceeding that of [Mn(EDTA)]2- (r1p = 3.3 mM-1 s-1 at 22 MHz and 25 °C). The parameters that control the relaxivities in this family of complexes were determined by simultaneous fitting of the experimental 1H NMRD and 17O NMR data (transverse relaxation rates and chemical shifts), with the aid of computational studies performed at the DFT and CASSCF/NEVPT2 levels. These studies provide detailed insight of the parameters that control the efficiency of these relaxation agents at the molecular level.
Collapse
Affiliation(s)
- Rocío Uzal-Varela
- Universidade da Coruña, Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, 15071, A Coruña, Galicia, Spain.
| | - Daniela Lalli
- Magnetic Resonance Platform (PRISMA-UPO), Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale T. Michel 11, 15121 Alessandria, Italy
| | - Isabel Brandariz
- Universidade da Coruña, Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, 15071, A Coruña, Galicia, Spain.
| | - Aurora Rodríguez-Rodríguez
- Universidade da Coruña, Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, 15071, A Coruña, Galicia, Spain.
| | - Carlos Platas-Iglesias
- Universidade da Coruña, Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, 15071, A Coruña, Galicia, Spain.
| | - Mauro Botta
- Magnetic Resonance Platform (PRISMA-UPO), Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale T. Michel 11, 15121 Alessandria, Italy
| | - David Esteban-Gómez
- Universidade da Coruña, Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, 15071, A Coruña, Galicia, Spain.
| |
Collapse
|
48
|
Lalli D, Ferrauto G, Terreno E, Carniato F, Botta M. Mn(II)-Conjugated silica nanoparticles as potential MRI probes. J Mater Chem B 2021; 9:8994-9004. [PMID: 34585711 DOI: 10.1039/d1tb01600h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel Mn(II)-based nanoprobes were rationally designed as high contrast enhancing agents for magnetic resonance imaging (MRI) and obtained by anchoring a Mn(II)-CDTA derivative to the surface of organo-modified silica nanoparticles (SiNPs). Large payloads of paramagnetic metal-chelates have been immobilized on biocompatible SiNPs with spherical shape and narrow size distribution of 80-90 nm, resulting in a relaxivity gain of 250% at clinical fields (0.5 T) as compared to the free chelate. Such substantial efficacy enhancement of the nanoprobes is mainly attributed to the restriction of the rotational dynamics of the conjugated complex, as revealed by comprehensive 1H-NMR relaxometric investigations. The paramagnetic nanospheres exhibit good colloidal stability over time in biological matrices, allowing for MRI applications. High image contrast was found in T1w-MRI images collected at 1 T on phantoms containing relatively small amounts of contrast agent (CA), for which low cellular toxicity was observed on three different cell lines. Preliminary in vivo studies on healthy mice demonstrated the efficiency of the novel Mn-based silica nanoparticle as T1w-MRI probes, resulting in significant contrast enhancement in the liver. These findings demonstrate that these novel Mn-SiNPs are high efficacy CAs suitable for preclinical MRI applications.
Collapse
Affiliation(s)
- Daniela Lalli
- Magnetic Resonance Platform (PRISMA-UPO), Department of Sciences and Technological Innovation, University of Eastern Piedmont "Amedeo Avogadro", Viale Teresa Michel 11, 15121-Alessandria, Italy.
| | - Giuseppe Ferrauto
- Molecular Imaging Center, Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Enzo Terreno
- Molecular Imaging Center, Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Fabio Carniato
- Magnetic Resonance Platform (PRISMA-UPO), Department of Sciences and Technological Innovation, University of Eastern Piedmont "Amedeo Avogadro", Viale Teresa Michel 11, 15121-Alessandria, Italy.
| | - Mauro Botta
- Magnetic Resonance Platform (PRISMA-UPO), Department of Sciences and Technological Innovation, University of Eastern Piedmont "Amedeo Avogadro", Viale Teresa Michel 11, 15121-Alessandria, Italy.
| |
Collapse
|
49
|
Uzal-Varela R, Valencia L, Lalli D, Maneiro M, Esteban-Gómez D, Platas-Iglesias C, Botta M, Rodríguez-Rodríguez A. Understanding the Effect of the Electron Spin Relaxation on the Relaxivities of Mn(II) Complexes with Triazacyclononane Derivatives. Inorg Chem 2021; 60:15055-15068. [PMID: 34618439 PMCID: PMC8527457 DOI: 10.1021/acs.inorgchem.1c02057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Investigating the relaxation of water 1H nuclei induced by paramagnetic Mn(II) complexes is important to understand the mechanisms that control the efficiency of contrast agents used in diagnostic magnetic resonance imaging (MRI). Herein, a series of potentially hexadentate triazacyclononane (TACN) derivatives containing different pendant arms were designed to explore the relaxation of the electron spin in the corresponding Mn(II) complexes by using a combination of 1H NMR relaxometry and theoretical calculations. These ligands include 1,4,7-triazacyclononane-1,4,7-triacetic acid (H3NOTA) and three derivatives in which an acetate group is replaced by sulfonamide (H3NO2ASAm), amide (H2NO2AM), or pyridyl (H2NO2APy) pendants. The analogue of H3NOTA containing three propionate pendant arms (H3NOTPrA) was also investigated. The X-ray structure of the derivative containing two acetate groups and a sulfonamide pendant arm [Mn(NO2ASAm)]- evidenced six-coordination of the ligand to the metal ion, with the coordination polyhedron being close to a trigonal prism. The relaxivities of all complexes at 20 MHz and 25 °C (1.1-1.3 mM-1 s-1) are typical of systems that lack water molecules coordinated to the metal ion. The nuclear magnetic relaxation profiles evidence significant differences in the relaxivities of the complexes at low fields (<1 MHz), which are associated with different spin relaxation rates. The zero field splitting (ZFS) parameters calculated by using DFT and CASSCF methods show that electronic relaxation is relatively insensitive to the nature of the donor atoms. However, the twist angle of the two tripodal faces that delineate the coordination polyhedron, defined by the N atoms of the TACN unit (lower face) and the donor atoms of the pendant arms (upper face), has an important effect in the ZFS parameters. A twist angle close to the ideal value for an octahedral coordination (60°), such as that in [Mn(NOTPrA)]-, leads to a small ZFS energy, whereas this value increases as the coordination polyhedron approaches to a trigonal prism.
Collapse
Affiliation(s)
- Rocío Uzal-Varela
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071, A Coruña, Galicia, Spain
| | - Laura Valencia
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidade de Vigo, As Lagoas, Marcosende, 36310 Pontevedra, Spain
| | - Daniela Lalli
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale T. Michel 11, 15121 Alessandria, Italy
| | - Marcelino Maneiro
- Departamento de Química Inorgánica, Universidade de Santiago de Compostela, Facultade de Ciencias, Campus de Lugo, 27002 Lugo, Galicia, Spain
| | - David Esteban-Gómez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071, A Coruña, Galicia, Spain
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071, A Coruña, Galicia, Spain
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale "A. Avogadro", Viale T. Michel 11, 15121 Alessandria, Italy
| | - Aurora Rodríguez-Rodríguez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química, Facultade de Ciencias, Universidade da Coruña, 15071, A Coruña, Galicia, Spain
| |
Collapse
|
50
|
Semi-Rigid (Aminomethyl) Piperidine-Based Pentadentate Ligands for Mn(II) Complexation. Molecules 2021; 26:molecules26195993. [PMID: 34641536 PMCID: PMC8513077 DOI: 10.3390/molecules26195993] [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: 09/08/2021] [Revised: 09/24/2021] [Accepted: 09/29/2021] [Indexed: 12/05/2022] Open
Abstract
Two pentadentate ligands built on the 2-aminomethylpiperidine structure and bearing two tertiary amino and three oxygen donors (three carboxylates in the case of AMPTA and two carboxylates and one phenolate for AMPDA-HB) were developed for Mn(II) complexation. Equilibrium studies on the ligands and the Mn(II) complexes were carried out using pH potentiometry, 1H-NMR spectroscopy and UV-vis spectrophotometry. The Mn complexes that were formed by the two ligands were more stable than the Mn complexes of other pentadentate ligands but with a lower pMn than Mn(EDTA) and Mn(CDTA) (pMn for Mn(AMPTA) = 7.89 and for Mn(AMPDA-HB) = 7.07). 1H and 17O-NMR relaxometric studies showed that the two Mn-complexes were q = 1 with a relaxivity value of 3.3 mM−1 s−1 for Mn(AMPTA) and 3.4 mM−1 s−1 for Mn(AMPDA-HB) at 20 MHz and 298 K. Finally, the geometries of the two complexes were optimized at the DFT level, finding an octahedral coordination environment around the Mn2+ ion, and MD simulations were performed to monitor the distance between the Mn2+ ion and the oxygen of the coordinated water molecule to estimate its residence time, which was in good agreement with that determined using the 17O NMR data.
Collapse
|