1
|
Manna D, Lo R, Miriyala VM, Nachtigallová D, Trávníček Z, Hobza P. Impact of dielectric constant of solvent on the formation of transition metal-ammine complexes. J Comput Chem 2024; 45:204-209. [PMID: 37752737 DOI: 10.1002/jcc.27230] [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: 06/15/2023] [Revised: 08/29/2023] [Accepted: 09/04/2023] [Indexed: 09/28/2023]
Abstract
The DFT-level computational investigations into Gibbs free energies (ΔG) demonstrate that as the dielectric constant of the solvent increases, the stabilities of [M(NH3 )n ]2+/3+ (n = 4, 6; M = selected 3d transition metals) complexes decrease. However, there is no observed correlation between the stability of the complex and the solvent donor number. Analysis of the charge transfer and Wiberg bond indices indicates a dative-bond character in all the complexes. The solvent effect assessed through solvation energy is determined by the change in the solvent accessible surface area (SASA) and the change in the charge distribution that occurs during complex formation. It has been observed that the SASA and charge transfer are different in the different coordination numbers, resulting in a variation in the solvent effect on complex stability in different solvents. This ultimately leads to a change between the relative stability of complexes with different coordination numbers while increasing the solvent polarity for a few complexes. Moreover, the findings indicate a direct relationship between ΔΔG (∆Gsolvent -∆Ggas ) and ΔEsolv , which enables the computation of ΔG for the compounds in a particular solvent using only ΔGgas and ΔEsolv . This approach is less computationally expensive.
Collapse
Affiliation(s)
- Debashree Manna
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
| | - Rabindranath Lo
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Olomouc, Czech Republic
| | - Vijay Madhav Miriyala
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Olomouc, Czech Republic
| | - Dana Nachtigallová
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
- IT4Innovations, VŠB-Technical University of Ostrava, Ostrava, Czech Republic
| | - Zdeněk Trávníček
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Olomouc, Czech Republic
| | - Pavel Hobza
- Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry, Prague, Czech Republic
- IT4Innovations, VŠB-Technical University of Ostrava, Ostrava, Czech Republic
| |
Collapse
|
2
|
Duraiyarasu M, Kumaran SS, Mayilmurugan R. Alkyl Chain Appended Fe(III) Catecholate Complex as a Dual-Modal T1 MRI-NIR Fluorescence Imaging Agent via Second Sphere Water Interactions. ACS Biomater Sci Eng 2023. [PMID: 37141045 DOI: 10.1021/acsbiomaterials.3c00203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The C12-alkyl chain-conjugated Fe(III) catecholate complex [Fe(C12CAT)3]3-, Fe(C12CAT)3 [C12CAT = N-(3,4-dihydroxyphenethyl)dodecanamide], was synthesized and characterized, reported as a dual-modal T1-MRI and an optical imaging probe. The DFT-optimized structure of Fe(C12CAT)3 reveals a distorted octahedral coordination geometry around the high spin Fe(III) center. The formation constant (-log K) of Fe(C12CAT)3 was calculated as 45.4. The complex exhibited r1-relaxivity values of 2.31 ± 0.12 and 1.52 ± 0.06 mM-1 s-1 at 25 and 37 °C, respectively, on 1.41 T at pH 7.3 via second-sphere water interactions. The interaction of Fe(C12CAT)3 with human serum albumin showed concomitant enhancement of r1-relaxivity to 6.44 ± 0.15 mM-1 s-1. The MR phantom images are significantly brighter and directly correlate to the concentration of Fe(C12CAT)3. Adding an external fluorescent marker IR780 dye to Fe(C12CAT)3 leads to the formation of self-assembly by C12-alkyl chains. It resulted in the fluorescence quenching of the dye, and its critical aggregation concentration was calculated as 70 μM. The aggregated matrix of Fe(C12CAT)3 and IR780 dye is spherical, with an average hydrodynamic diameter of 189.5 nm. This self-assembled supramolecular system is found to be non-fluorescent and was "turn-on" under acidic pH via dissociation of aggregates. The r1-relaxivity is found to be unchanged during the matrix aggregation and disaggregation. The probe showed MRI ON and fluorescent OFF under physiological conditions and MRI ON and fluorescent ON under acidic pH. The cell viability experiments showed that the cells are 80% viable at 1 mM probe concentration. Fluorescence experiments and MR phantom images showed that Fe(C12CAT)3 is a potential dual model imaging probe to visualize the acidic pH environment of the cells.
Collapse
Affiliation(s)
- Maheshwaran Duraiyarasu
- Department of Chemistry, and Department of Bioscience & Biomedical Engineering, Indian Institute of Technology Bhilai, Raipur, Chattisgarh 492015, India
| | - S Senthil Kumaran
- Department of NMR, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110 029, India
| | - Ramasamy Mayilmurugan
- Department of Chemistry, and Department of Bioscience & Biomedical Engineering, Indian Institute of Technology Bhilai, Raipur, Chattisgarh 492015, India
| |
Collapse
|
3
|
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]
|
4
|
Mallik R, Khannam M, Saha M, Marandi S, Kumar S, Mukherjee C. The electrostatic confinement of aquated monocationic Gd(III) complex-molecules within the inner core of porous silica nanoparticles creates a highly efficient T1 contrast agent for magnetic resonance imaging. Dalton Trans 2022; 51:14138-14149. [PMID: 36043989 DOI: 10.1039/d2dt02272a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Contrast-agent enhanced magnetic resonance imaging (MRI) has been under continuous investigation for the conspicuous imaging of lesions and the early-stage detection of tumors. To achieve the development of a T1-weighted contrast agent with a high relaxivity value, herein, porous silica nanoparticles that had internalized about 20 aquated cationic Gd(III) complexes (1) of the hexadentate hydroxyethyl-appended picolinate-based ligand H2hbda were demonstrated. Complex 1 exhibited a longitudinal relaxivity value per mM Gd(III) ions, r1, of 9.05 mM-1 s-1 (pH 7.4, 37 °C, 1.41 T), which increased to 86.41 mM-1 s-1 because of the grafting of complex 1 in the inner core of porous silica nanospheres through electrostatic interactions between the anionic silica surface and the cationic complex 1 molecules. A further augmentation in the relaxivity value to 118.32 mM-1 s-1 was realized because of the interaction of the complex 1@SiO2NPs with serum albumin protein. The synthesized nanosystem was impervious to physiologically available anions (HPO42- and HCO31-) and also kinetically inert, as evidenced via a transmetallation experiment in the presence of Zn(II) ions. The developed complex-incorporated nanomaterial was bio- and hemo-compatible. Cellular uptake measurements employing HeLa cells and the concentration-dependent enhancement in the brightness of in vitro phantom images, recorded under a clinical scanner at 1.5 T, demonstrated that the developed biocompatible 1@SiO2NP complex has promising diagnostic applications as a T1-weighted MRI contrast agent.
Collapse
Affiliation(s)
- Riya Mallik
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Mahmuda Khannam
- 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
| | - Shivani Marandi
- Centre for the Environment, Indian Institute of Technology Guwahati, Assam-781039, India
| | - Sachin Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Chandan Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| |
Collapse
|
5
|
Spectroscopic and antimicrobial studies of Cr(III), Mn(II) and Co(II) complexes with a tetradentate macrocyclic ligand. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
Nanosized T1 MRI Contrast Agent Based on a Polyamidoamine as Multidentate Gd Ligand. Molecules 2021; 27:molecules27010174. [PMID: 35011405 PMCID: PMC8746954 DOI: 10.3390/molecules27010174] [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] [Received: 10/18/2021] [Revised: 12/15/2021] [Accepted: 12/23/2021] [Indexed: 11/17/2022] Open
Abstract
A linear polyamidoamine (PAA) named BAC-EDDS, containing metal chelating repeat units composed of two tert-amines and four carboxylic groups, has been prepared by the aza-Michael polyaddition of ethylendiaminodisuccinic (EDDS) with 2,2-bis(acrylamido)acetic acid (BAC). It was characterized by size exclusion chromatography (SEC), FTIR, UV–Vis and NMR spectroscopies. The pKa values of the ionizable groups of the repeat unit were estimated by potentiometric titration, using a purposely synthesized molecular ligand (Agly-EDDS) mimicking the structure of the BAC-EDDS repeat unit. Dynamic light scattering (DLS) and ζ-potential analyses revealed the propensity of BAC-EDDS to form stable nanoaggregates with a diameter of approximately 150 nm at pH 5 and a net negative charge at physiological pH, in line with an isoelectric point <2. BAC-EDDS stably chelated Gd (III) ions with a molar ratio of 0.5:1 Gd (III)/repeat unit. The stability constant of the molecular model Gd-Agly-EDDS (log K = 17.43) was determined as well, by simulating the potentiometric titration through the use of Hyperquad software. In order to comprehend the efficiency of Gd-BAC-EDDS in contrasting magnetic resonance images, the nuclear longitudinal (r1) and transverse (r2) relaxivities as a function of the externally applied static magnetic field were investigated and compared to the ones of commercial contrast agents. Furthermore, a model derived from the Solomon–Bloembergen–Morgan theory for the field dependence of the NMR relaxivity curves was applied and allowed us to evaluate the rotational correlation time of the complex (τ = 0.66 ns). This relatively high value is due to the dimensions of Gd-BAC-EDDS, and the associated rotational motion causes a peak in the longitudinal relaxivity at ca. 75 MHz, which is close to the frequencies used in clinics. The good performances of Gd-BAC-EDDS as a contrast agent were also confirmed through in vitro magnetic resonance imaging experiments with a 0.2 T magnetic field.
Collapse
|
7
|
Mallik R, Saha M, Mukherjee C. Porous Silica Nanospheres with a Confined Mono(aquated) Mn(II)-Complex: A Potential T1- T2 Dual Contrast Agent for Magnetic Resonance Imaging. ACS APPLIED BIO MATERIALS 2021; 4:8356-8367. [PMID: 35005912 DOI: 10.1021/acsabm.1c00937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Magnetic resonance imaging has emerged as an indispensable imaging modality for the early-stage diagnosis of many diseases. The imaging in the presence of a contrast agent is always advantageous, as it mitigates the low-sensitivity issue of the measurements and provides excellent contrast in the acquired images even in a short acquisition time. However, the stability and high relaxivity of the contrast agents remained a challenge. Here, molecules of a mononuclear, mono(aquated), thermodynamically stable [log KMnL = 14.80(7) and pMn = 8.97] Mn(II)-complex (1), based on a hexadentate pyridine-picolinate unit-containing ligand (H2PyDPA), were confined within a porous silica nanosphere in a noncovalent fashion to render a stable nanosystem, complex 1@SiO2NP. The entrapped complex 1 (complex 1@SiO2) exhibited r1 = 8.46 mM-1 s-1 and r2 = 33.15 mM-1 s-1 at pH = 7.4, 25 °C, and 1.41 T in N-(2-hydroxyethyl)piperazine-N'-ethanesulfonic acid buffer. The values were about 2.9 times higher compared to the free (unentrapped)-complex 1 molecules. The synthesized complex 1@SiO2NP interacted significantly with albumin protein and consequently boosted both the relaxivity values to r1 = 24.76 mM-1 s-1 and r2 = 63.96 mM-1 s-1 at pH = 7.4, 37 °C, and 1.41 T. The kinetic inertness of the entrapped molecules was established by recognizing no appreciable change in the r1 value upon challenging complex 1@SiO2NP with 30 and 40 times excess of Zn(II) ions at pH 6 and 25 °C. The water molecule coordinated to the Mn(II) ion in complex 1@SiO2 was also impervious to the physiologically relevant anions (bicarbonate, biphosphate, and citrate) and pH of the medium. Thus, it ensured the availability of the inner-coordination site of complex 1 for the coordination of water molecules in the biological media. The concentration-dependent changes in image intensities in T1- and T2-weighted phantom images and uptake of the nanoparticles by the HeLa cell put forward the biocompatible complex 1@SiO2NP as a potential dual-mode MRI contrast agent, an alternative to Gd(III)-containing contrast agents.
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
| | - Chandan Mukherjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| |
Collapse
|
8
|
Yousuf I, Bashir M, Arjmand F, Tabassum S. Advancement of metal compounds as therapeutic and diagnostic metallodrugs: Current frontiers and future perspectives. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214104] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
9
|
Travagin F, Lattuada L, Giovenzana GB. AAZTA: The rise of mesocyclic chelating agents for metal coordination in medicine. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
10
|
Lytkin AI, Krutova ON, Chernikov VV, Mokhova YV, Krutova ED. Thermodynamics of the Formation of Complexes of Gd3+ and Ho3+ with L-Glutamine in Aqueous Solutions. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2021. [DOI: 10.1134/s0036024421010179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
11
|
Wallnöfer EA, Thurner GC, Kremser C, Talasz H, Stollenwerk MM, Helbok A, Klammsteiner N, Albrecht-Schgoer K, Dietrich H, Jaschke W, Debbage P. Albumin-based nanoparticles as contrast medium for MRI: vascular imaging, tissue and cell interactions, and pharmacokinetics of second-generation nanoparticles. Histochem Cell Biol 2020; 155:19-73. [PMID: 33040183 DOI: 10.1007/s00418-020-01919-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2020] [Indexed: 12/14/2022]
Abstract
This multidisciplinary study examined the pharmacokinetics of nanoparticles based on albumin-DTPA-gadolinium chelates, testing the hypothesis that these nanoparticles create a stronger vessel signal than conventional gadolinium-based contrast agents and exploring if they are safe for clinical use. Nanoparticles based on human serum albumin, bearing gadolinium and designed for use in magnetic resonance imaging, were used to generate magnet resonance images (MRI) of the vascular system in rats ("blood pool imaging"). At the low nanoparticle doses used for radionuclide imaging, nanoparticle-associated metals were cleared from the blood into the liver during the first 4 h after nanoparticle application. At the higher doses required for MRI, the liver became saturated and kidney and spleen acted as additional sinks for the metals, and accounted for most processing of the nanoparticles. The multiple components of the nanoparticles were cleared independently of one another. Albumin was detected in liver, spleen, and kidneys for up to 2 days after intravenous injection. Gadolinium was retained in the liver, kidneys, and spleen in significant concentrations for much longer. Gadolinium was present as significant fractions of initial dose for longer than 2 weeks after application, and gadolinium clearance was only complete after 6 weeks. Our analysis could not account quantitatively for the full dose of gadolinium that was applied, but numerous organs were found to contain gadolinium in the collagen of their connective tissues. Multiple lines of evidence indicated intracellular processing opening the DTPA chelates and leading to gadolinium long-term storage, in particular inside lysosomes. Turnover of the stored gadolinium was found to occur in soluble form in the kidneys, the liver, and the colon for up to 3 weeks after application. Gadolinium overload poses a significant hazard due to the high toxicity of free gadolinium ions. We discuss the relevance of our findings to gadolinium-deposition diseases.
Collapse
Affiliation(s)
- E A Wallnöfer
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - G C Thurner
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria
| | - C Kremser
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - H Talasz
- Division of Clinical Biochemistry, Biocenter, Medical University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - M M Stollenwerk
- Faculty of Health and Society, Biomedical Laboratory Science, University Hospital MAS, Malmö University, 205 06, Malmö, Sweden
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria
| | - A Helbok
- Department of Nuclear Medicine, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria
| | - N Klammsteiner
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria
| | - K Albrecht-Schgoer
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80-82/IV, 6020, Innsbruck, Austria
- Institute of Cell Genetics, Department for Pharmacology and Genetics, Medical University of Innsbruck, Peter-Mayr-Strasse 1a, 6020, Innsbruck, Austria
| | - H Dietrich
- Central Laboratory Animal Facilities, Innsbruck Medical University, Peter-Mayr-Strasse 4a, 6020, Innsbruck, Austria
| | - W Jaschke
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - P Debbage
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria.
| |
Collapse
|
12
|
McLeod SM, Robison L, Parigi G, Olszewski A, Drout RJ, Gong X, Islamoglu T, Luchinat C, Farha OK, Meade TJ. Maximizing Magnetic Resonance Contrast in Gd(III) Nanoconjugates: Investigation of Proton Relaxation in Zirconium Metal-Organic Frameworks. ACS APPLIED MATERIALS & INTERFACES 2020; 12:41157-41166. [PMID: 32852198 DOI: 10.1021/acsami.0c13571] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Gadolinium(III) nanoconjugate contrast agents (CAs) provide significant advantages over small-molecule complexes for magnetic resonance imaging (MRI), namely increased Gd(III) payload and enhanced proton relaxation efficiency (relaxivity, r1). Previous research has demonstrated that both the structure and surface chemistry of the nanomaterial substantially influence contrast. We hypothesized that inserting Gd(III) complexes in the pores of a metal-organic framework (MOF) might offer a unique strategy to further explore the parameters of nanomaterial structure and composition, which influence relaxivity. Herein, we postsynthetically incorporate Gd(III) complexes into Zr-MOFs using solvent-assisted ligand incorporation (SALI). Through the study of Zr-based MOFs, NU-1000 (nano and micronsize particles) and NU-901, we investigated the impact of particle size and pore shape on proton relaxivity. The SALI-functionalized Gd nano NU-1000 hybrid material displayed the highest loading of the Gd(III) complex (1.9 ± 0.1 complexes per node) and exhibited the most enhanced proton relaxivity (r1 of 26 ± 1 mM-1 s-1 at 1.4 T). Based on nuclear magnetic relaxation dispersion (NMRD) analysis, we can attribute the performance of Gd nano NU-1000 to the nanoscale size of the MOF particles and larger pore size that allows for rapid water exchange. We have demonstrated that SALI is a promising method for incorporating Gd(III) complexes into MOF materials and identified crucial design parameters for the preparation of next generation Gd(III)-functionalized MOF MRI contrast agents.
Collapse
Affiliation(s)
- Shaunna M McLeod
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, Illinois 60208, United States
| | - Lee Robison
- International Institute of Nanotechnology, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Giacomo Parigi
- Magnetic Resonance Center (CERM), Consorzio Interuniversitario Risonanze Magnetiche di Metalloproteine (CIRMMP) and Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Italy
| | - Alyssa Olszewski
- International Institute of Nanotechnology, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Riki J Drout
- International Institute of Nanotechnology, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Xinyi Gong
- International Institute of Nanotechnology, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Timur Islamoglu
- International Institute of Nanotechnology, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Claudio Luchinat
- Magnetic Resonance Center (CERM), Consorzio Interuniversitario Risonanze Magnetiche di Metalloproteine (CIRMMP) and Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Italy
| | - Omar K Farha
- International Institute of Nanotechnology, Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Thomas J Meade
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, Illinois 60208, United States
| |
Collapse
|
13
|
Mahmoud NF, Mahmoud WH, Mohamed GG. Synthesis, spectral, MOE and cytotoxic studies of nano Ru (III), Pr (III) and Gd (III) metal complexes with new Schiff base ligand based on dibenzoyl methane and anthranilic acid. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5801] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Nessma F. Mahmoud
- Chemistry Department, Faculty of ScienceCairo University Giza 1213 Egypt
| | - Walaa H. Mahmoud
- Chemistry Department, Faculty of ScienceCairo University Giza 1213 Egypt
- Egypt Nanotechnology CenterCairo University El‐Sheikh Zayed 12588 Egypt
| | - Gehad G. Mohamed
- Chemistry Department, Faculty of ScienceCairo University Giza 1213 Egypt
- Egypt Nanotechnology CenterCairo University El‐Sheikh Zayed 12588 Egypt
| |
Collapse
|
14
|
1H NMR of paramagnetic Dy3+ complex with DTPA-amide p-xylylene-cyclophane; possible probing action toward d-histidine and histamine. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
15
|
Leygue N, Galaup C, Lopera A, Delgado-Pinar E, Williams RM, Gornitzka H, Zwier JM, García-España E, Lamarque L, Picard C. Tripyridinophane Platform Containing Three Acetate Pendant Arms: An Attractive Structural Entry for the Development of Neutral Eu(III) and Tb(III) Complexes in Aqueous Solution. Inorg Chem 2020; 59:1496-1512. [PMID: 31913029 DOI: 10.1021/acs.inorgchem.9b03345] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a detailed characterization of Eu3+ and Tb3+ complexes derived from a tripyridinophane macrocycle bearing three acetate side arms (H3tpptac). Tpptac3- displays an overall basicity (∑ log KiH) of 24.5, provides the formation of mononuclear ML species, and shows a good binding affinity for Ln3+ (log KLnL = 17.5-18.7). These complexes are also thermodynamically stable at physiological pH (pEu = 18.6, pTb = 18.0). It should be noted that the pGd value of Gd-tpptac (18.4) is only slightly lower than that of commercially available MRI contrast agents such as Gd-dota (pGd = 19.2). Moreover, a very good selectivity for these ions over the endogenous cations (log KCuL = 14.4, log KZnL = 12.9, and log KCaL = 9.3) is observed. The X-ray structure of the terbium complex shows the metal coordinated by the nine N6O3 donor set of the ligand and one inner-sphere water molecule. DFT calculations result in two Eu-tpptac structures with similar bond energies (ΔE = 0.145 eV): one structure in which the water is coordinated to the metal ion and one structure in which the water molecule is farther away from the ion, bound to the ligand with an OH-π bond. By detailed luminescence experiments, we demonstrate that the europium complex in aqueous solution presents a hydration equilibrium between nine-coordinate, dehydrated [Eu-tpptac]0 and ten-coordinate, monohydrated [Eu-tpptac(H2O)]0 species. A similar trend is observed for the terbium complex. Despite the presence of this hydration equilibrium, the H3tpptac ligand sensitizes Eu3+ and Tb3+ luminescence efficiently in buffered water at physiological pH. Particularly, the terbium complex displays a long excited-state lifetime of 2.24 ms and an overall quantum yield of 33% with a brightness of 3600 M-1 cm-1. Such features of Ln3+ complexes of H3tpptac indicate that this platform appears to be particularly appealing for the further development of luminescent lanthanide labels.
Collapse
Affiliation(s)
- Nadine Leygue
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB) , Université Paul Sabatier-Toulouse III/CNRS (UMR5068) , 118 route de Narbonne , F-31062 Toulouse , France
| | - Chantal Galaup
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB) , Université Paul Sabatier-Toulouse III/CNRS (UMR5068) , 118 route de Narbonne , F-31062 Toulouse , France
| | - Alberto Lopera
- Instituto de Ciencia Molecular (ICMOL) , Universitat de València , C/Catedrático José Beltrán 2 , 46980 Paterna , Spain
| | - Estefanía Delgado-Pinar
- Instituto de Ciencia Molecular (ICMOL) , Universitat de València , C/Catedrático José Beltrán 2 , 46980 Paterna , Spain
| | - René M Williams
- Molecular Photonics Group, Van 't Hoff Institute for Molecular Sciences , University of Amsterdam , P.O. Box 94157, 1090 GD Amsterdam , The Netherlands
| | - Heinz Gornitzka
- CNRS, LCC , Université de Toulouse, UPS, INPT , 205 Route de Narbonne , F-31077 Toulouse Cedex 4 , France
| | - Jurriaan M Zwier
- Cisbio bioassays , Parc Marcel Boiteux, BP 84175, 30200 Codolet , France
| | - Enrique García-España
- Instituto de Ciencia Molecular (ICMOL) , Universitat de València , C/Catedrático José Beltrán 2 , 46980 Paterna , Spain
| | - Laurent Lamarque
- Cisbio bioassays , Parc Marcel Boiteux, BP 84175, 30200 Codolet , France
| | - Claude Picard
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique (SPCMIB) , Université Paul Sabatier-Toulouse III/CNRS (UMR5068) , 118 route de Narbonne , F-31062 Toulouse , France
| |
Collapse
|
16
|
Chadha N, Singh D, Milton MD, Mishra G, Daniel J, Mishra AK, Tiwari AK. Computational prediction of interaction and pharmacokinetics profile study for polyamino-polycarboxylic ligands on binding with human serum albumin. NEW J CHEM 2020. [DOI: 10.1039/c9nj05594k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Human serum albumin (HSA) is one of the most abundant plasma proteins available in blood and responsible for transport of fatty acids, drugs and metabolites at its binding sites which are very important for the assessment of pharmacokinetics profile of the polyamino-polycarboxylic ligands.
Collapse
Affiliation(s)
- Nidhi Chadha
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Delhi 110054
- India
- Department of Chemistry
| | - Dushyant Singh
- Department of Chemistry
- Christ Church P. G. College
- C S J M University
- Kanpur
- India
| | | | - Gauri Mishra
- Department of Zoology
- Swami Shraddhanand College
- University of Delhi
- Delhi 110036
- India
| | - Joseph Daniel
- Department of Chemistry
- Christ Church P. G. College
- C S J M University
- Kanpur
- India
| | - Anil K. Mishra
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Delhi 110054
- India
| | - Anjani K. Tiwari
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences
- Delhi 110054
- India
- Department of Chemistry
| |
Collapse
|
17
|
Lytkin AI, Chernikov VV, Krutova ON, Krutov PD. Thermodynamics of Complexation Reactions of Nd3+ and Eu3+ Ions with Glycyl-DL-Alanine, Glycyl-DL-Leucine, and Glycyl-DL-Tyrosine in Aqueous Solution in the pH Range рН 1.6–7.5. RUSS J INORG CHEM+ 2019. [DOI: 10.1134/s0036023619110111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
18
|
Becatti M, Bencini A, Nistri S, Conti L, Fabbrini MG, Lucarini L, Ghini V, Severi M, Fiorillo C, Giorgi C, Sorace L, Valtancoli B, Bani D. Different Antioxidant Efficacy of Two Mn II-Containing Superoxide Anion Scavengers on Hypoxia/Reoxygenation-Exposed Cardiac Muscle Cells. Sci Rep 2019; 9:10320. [PMID: 31311943 PMCID: PMC6635543 DOI: 10.1038/s41598-019-46476-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 06/28/2019] [Indexed: 01/02/2023] Open
Abstract
Oxidative stress due to excess superoxide anion (\documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$${{\bf{O}}}_{{\bf{2}}}^{{\boldsymbol{\cdot }}{\boldsymbol{-}}}$$\end{document}O2⋅−) produced by dysfunctional mitochondria is a key pathogenic event of aging and ischemia-reperfusion diseases. Here, a new \documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$${{\bf{O}}}_{{\bf{2}}}^{{\boldsymbol{\cdot }}{\boldsymbol{-}}}$$\end{document}O2⋅−-scavenging MnII complex with a new polyamino-polycarboxylate macrocycle (4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diacetate) containing 2 quinoline units (MnQ2), designed to improve complex stability and cell permeability, was compared to parental MnII complex with methyls replacing quinolines (MnM2). MnQ2 was more stable than MnM2 (log K = 19.56(8) vs. 14.73(2) for the equilibrium Mn2+ + L2−, where L = Q2 and M2) due to the involvement of quinoline in metal binding and to the hydrophobic features of the ligand which improve metal desolvation upon complexation. As oxidative stress model, H9c2 rat cardiomyoblasts were subjected to hypoxia-reoxygenation. MnQ2 and MnM2 (10 μmol L−1) were added at reoxygenation for 1 or 2 h. The more lipophilic MnQ2 showed more rapid cell and mitochondrial penetration than MnM2. Both MnQ2 and MnM2 abated endogenous ROS and mitochondrial \documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$${{\bf{O}}}_{{\bf{2}}}^{{\boldsymbol{\cdot }}{\boldsymbol{-}}}$$\end{document}O2⋅−, decreased cell lipid peroxidation, reduced mitochondrial dysfunction, in terms of efficiency of the respiratory chain and preservation of membrane potential (Δψ) and permeability, decreased the activation of pro-apoptotic caspases 9 and 3, and increased cell viability. Of note, MnQ2 was more effective than MnM2 to exert cytoprotective anti-oxidant effects in the short term. Compounds with redox-inert ZnII replacing the functional MnII were ineffective. This study provides clues which further our understanding of the structure-activity relationships of MnII-chelates and suggests that MnII-polyamino-polycarboxylate macrocycles could be developed as new anti-oxidant drugs.
Collapse
Affiliation(s)
- Matteo Becatti
- Department of, Experimental & Clinical Biomedical Sciences "Mario Serio", Section of Biochemical Sciences, University of Florence, viale G.B. Morgagni 50, 50134, Florence, Italy
| | - Andrea Bencini
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy.
| | - Silvia Nistri
- Department of Experimental & Clinical Medicine, Research Unit of Histology & Embryology, University of Florence, viale G. Pieraccini 6, 50139, Florence, Italy
| | - Luca Conti
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Maria Giulia Fabbrini
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Laura Lucarini
- Department NEUROFARBA, Section of Pharmacology, University of Florence, viale G. Pieraccini 6, 50139, Florence, Italy
| | - Veronica Ghini
- Center of Magnetic Resonance (CERM), University of Florence, Sesto Fiorentino, Florence, Italy
| | - Mirko Severi
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Claudia Fiorillo
- Department of, Experimental & Clinical Biomedical Sciences "Mario Serio", Section of Biochemical Sciences, University of Florence, viale G.B. Morgagni 50, 50134, Florence, Italy
| | - Claudia Giorgi
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Lorenzo Sorace
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Barbara Valtancoli
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019, Sesto Fiorentino, Florence, Italy
| | - Daniele Bani
- Department of Experimental & Clinical Medicine, Research Unit of Histology & Embryology, University of Florence, viale G. Pieraccini 6, 50139, Florence, Italy.
| |
Collapse
|
19
|
Khannam M, Sahoo SK, Mukherjee C. Effect of Ligand Chirality and Hyperconjugation on the Thermodynamic Stability of a Tris(aquated) GdIII
Complex: Synthesis, Characterization, and T
1
-Weighted Phantom MR Image Study. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mahmuda Khannam
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Guwahati Assam India
| | - Suban K. Sahoo
- Department of Applied Chemistry; S.V. National Institute of Technology; 395007 Surat Gujarat India
| | - Chandan Mukherjee
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Guwahati Assam India
| |
Collapse
|
20
|
Clough TJ, Jiang L, Wong KL, Long NJ. Ligand design strategies to increase stability of gadolinium-based magnetic resonance imaging contrast agents. Nat Commun 2019; 10:1420. [PMID: 30926784 PMCID: PMC6441101 DOI: 10.1038/s41467-019-09342-3] [Citation(s) in RCA: 167] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 12/20/2018] [Indexed: 01/08/2023] Open
Abstract
Gadolinium(III) complexes have been widely utilised as magnetic resonance imaging (MRI) contrast agents for decades. In recent years however, concerns have developed about their toxicity, believed to derive from demetallation of the complexes in vivo, and the relatively large quantities of compound required for a successful scan. Recent efforts have sought to enhance the relaxivity of trivalent gadolinium complexes without sacrificing their stability. This review aims to examine the strategic design of ligands synthesised for this purpose, provide an overview of recent successes in gadolinium-based contrast agent development and assess the requirements for clinical translation.
Collapse
Affiliation(s)
- Thomas J Clough
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK
| | - Lijun Jiang
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China
| | - Ka-Leung Wong
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China.
| | - Nicholas J Long
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London, W12 0BZ, UK.
| |
Collapse
|
21
|
Phukan B, Malikidogo KP, Bonnet CS, Tóth É, Mondal S, Mukherjee C. A Bishydrated, Eight–Coordinate Gd(III) Complex with Very Fast Water Exchange: Synthesis, Characterization, and Phantom MR Imaging. ChemistrySelect 2018. [DOI: 10.1002/slct.201801629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bedika Phukan
- Department of ChemistryIndian Institute of Technology Guwahati, Guwahati 781039, Assam India
| | - Kyangwi P. Malikidogo
- Centre de Biophysique MoléculaireCNRS, UPR 4301Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Célia S. Bonnet
- Centre de Biophysique MoléculaireCNRS, UPR 4301Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Éva Tóth
- Centre de Biophysique MoléculaireCNRS, UPR 4301Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Samsuzzoha Mondal
- Department of Chemical SciencesTata Institute of Fundamental Research 1 Homi Bhabha Road, Colaba, Mumbai 400005 India
| | - Chandan Mukherjee
- Department of ChemistryIndian Institute of Technology Guwahati, Guwahati 781039, Assam India
| |
Collapse
|
22
|
Chakraborty I, Jimenez de Aberasturi D, Pazos-Perez N, Guerrini L, Masood A, Alvarez-Puebla RA, Feliu N, Parak WJ. Ion-Selective Ligands: How Colloidal Nano- and Micro-Particles Can Introduce New Functionalities. ACTA ACUST UNITED AC 2018. [DOI: 10.1515/zpch-2018-1172] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Colloidal nano- and micro-particles can introduce new properties and functionalities to existing materials and thus are a valuable building block for the construction of novel materials. This is discussed for the case of ion-selective ligands, hence molecules that can bind specifically ions of one type. First, in case ion-selective fluorescent ligands are attached to the surface of particles, these fluorophores sense the local ion concentration at the particle surface and not the bulk ion concentration. Thus, the ion-response of the ligands can be tuned by attaching them to the surface of particles. Second, in case ligands specific for particular ions are bound to the surface of particles, these ions can provide contrast and thus the particles can be imaged. This involves for example Gd-ions, which provide contrast for magnetic resonance imaging (MRI), and 111In-ions, which provide contrast for imaging of radioactivity. By attaching the ligands to the surface of particles, their physicochemical properties (as for example size and solubility) are changed, which affects their interaction with cells and, consequently, biodistribution. Attachment of ion-chelators for imaging to particles thus allows for tuning their biodistribution. Third, ion-specific ligands can be also attached to the surface of magnetic particles. In this case ions bound to the ligands can be extracted with magnetic field gradients and magnetic separation becomes possible. Therefore, magnetic particles provide a handle to the ligands, which enables the extraction of ions from solution. These examples demonstrate how the attachment of different types of colloidal particles to one existing class of molecules, ion-selective ligands, can open new fields of applications of these molecules.
Collapse
Affiliation(s)
- Indranath Chakraborty
- Faculty of Physics, Center for Hybrid Nanostructures (CHyN) , Universität Hamburg , Hamburg , Germany
| | | | - Nicolas Pazos-Perez
- Universitat Rovira i Virgili , Department of Physical and Inorganic Chemistry – EMaS , Tarragona , Spain
| | - Luca Guerrini
- Universitat Rovira i Virgili , Department of Physical and Inorganic Chemistry – EMaS , Tarragona , Spain
| | - Atif Masood
- Faculty of Physics, Philipps Universität Marburg , Marburg , Germany
| | - Ramon A. Alvarez-Puebla
- Department of Physical Chemistry , Universitat Rovira i Virgili , Tarragona , Spain
- ICREA , Barcelona , Spain
| | - Neus Feliu
- Faculty of Physics, Center for Hybrid Nanostructures (CHyN) , Universität Hamburg , Hamburg , Germany
- Department of Laboratory Medicine (LABMED) , Karolinska Institutet , Stockholm , Sweden
| | - Wolfgang J. Parak
- Faculty of Physics, Center for Hybrid Nanostructures (CHyN) , Universität Hamburg , Hamburg , Germany
- CIC Biomagune , San Sebastian , Spain
| |
Collapse
|
23
|
Phukan B, Mukherjee C, Goswami U, Sarmah A, Mukherjee S, Sahoo SK, Moi SC. A New Bis(aquated) High Relaxivity Mn(II) Complex as an Alternative to Gd(III)-Based MRI Contrast Agent. Inorg Chem 2018; 57:2631-2638. [PMID: 29424537 DOI: 10.1021/acs.inorgchem.7b03039] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disclosed here are a piperazine, a pyridine, and two carboxylate groups containing pentadentate ligand H2pmpa and its corresponding water-soluble Mn(II) complex (1). DFT-based structural optimization implied that the complex had pentagonal bipyramidal geometry where the axial positions were occupied by two water molecules, and the equatorial plane was constituted by the ligand ON3O donor set. Thus, a bis(aquated) disc-like Mn(II) complex has been synthesized. The complex showed higher stability compared with Mn(II)-EDTA complex [log KMnL = 14.29(3)] and showed a very high r1 relaxivity value of 5.88 mM-1 s-1 at 1.41 T, 25 °C, and pH = 7.4. The relaxivity value remained almost unaffected by the pH of the medium in the range of 6-10. Although the presence of 200 equiv of fluoride and bicarbonate anions did not affect the relaxivity value appreciably, an increase in the value was noticed in the presence of phosphate anion due to slow tumbling of the complex. Cell viability measurements, as well as phantom MR images using clinical MRI imager, consolidated the possible candidature of complex 1 as a positive contrast agent.
Collapse
Affiliation(s)
- Bedika Phukan
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India
| | - Chandan Mukherjee
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India
| | - Upashi Goswami
- Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India
| | - Amrit Sarmah
- Department of Molecular Modelling , Institute of Organic Chemistry and Biochemistry ASCR , Flemingovo nám. 2 , CZ-166 10 Prague 6 , Czech Republic
| | - Subhajit Mukherjee
- Department of Chemistry , National Institute of Technology , Durgapur 713209 , West Bengal , India
| | - Suban K Sahoo
- Department of Applied Chemistry , S.V. National Institute of Technology , Surat 395007 , Gujarat , India
| | - Sankar Ch Moi
- Department of Chemistry , National Institute of Technology , Durgapur 713209 , West Bengal , India
| |
Collapse
|
24
|
Leonzio M, Melchior A, Faura G, Tolazzi M, Bettinelli M, Zinna F, Arrico L, Di Bari L, Piccinelli F. A chiral lactate reporter based on total and circularly polarized Tb(iii) luminescence. NEW J CHEM 2018. [DOI: 10.1039/c7nj04640e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Lactate anion signaling by a chiral Tb(iii) complex based on total and circularly polarized luminescence.
Collapse
Affiliation(s)
- Marco Leonzio
- Luminescent Materials Laboratory
- DB
- Università di Verona, and INSTM
- UdR Verona
- 37134 Verona
| | - Andrea Melchior
- Dipartimento Politecnico di Ingegneria e Architettura
- Laboratorio di Tecnologie Chimiche
- Università di Udine
- 33100 Udine
- Italy
| | - Georgina Faura
- Dipartimento Politecnico di Ingegneria e Architettura
- Laboratorio di Tecnologie Chimiche
- Università di Udine
- 33100 Udine
- Italy
| | - Marilena Tolazzi
- Dipartimento Politecnico di Ingegneria e Architettura
- Laboratorio di Tecnologie Chimiche
- Università di Udine
- 33100 Udine
- Italy
| | - Marco Bettinelli
- Luminescent Materials Laboratory
- DB
- Università di Verona, and INSTM
- UdR Verona
- 37134 Verona
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale
- 56124 Pisa
- Italy
| | - Lorenzo Arrico
- Dipartimento di Chimica e Chimica Industriale
- 56124 Pisa
- Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale
- 56124 Pisa
- Italy
| | - Fabio Piccinelli
- Luminescent Materials Laboratory
- DB
- Università di Verona, and INSTM
- UdR Verona
- 37134 Verona
| |
Collapse
|
25
|
Hajós P, Lukács D, Farsang E, Horváth K. High Performance Anion Chromatography of Gadolinium Chelates. J Chromatogr Sci 2016; 54:1752-1760. [DOI: 10.1093/chromsci/bmw133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 07/22/2016] [Indexed: 11/13/2022]
|
26
|
Massoud SS, Louka FR, Gazzaz MA, Henary MM, Fischer RC, Mautner FA. Polynuclear copper(II) complexes bridged by polycarboxylates of aromatic and N-heterocyclic compounds. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Lytkin AI, Chernyavskaya NV, Chernov AS, Litvinenko VE. Thermodynamic characteristics of complexation between Ho3+ and ethylenediamine-N,N'-disuccinic acid in aqueous solutions at 298.15 K. RUSS J INORG CHEM+ 2016. [DOI: 10.1134/s0036023616040124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
28
|
Zhu Q, Yang H, Li Y, Tian Y, Wang W, Tang W, Yuan Y, Hu A. HP-DO3A-based amphiphilic MRI contrast agents and relaxation enhancement through their assembly with polyelectrolytes. J Mater Chem B 2016; 4:7241-7248. [DOI: 10.1039/c6tb01998f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
HP-DO3A-based amphiphilic magnetic resonance imaging (MRI) contrast agents show electrostatic self-assembly ability with polyelectrolytes, good biocompatibility, and significant contrast enhancement in in vivo imaging.
Collapse
Affiliation(s)
- Qin Zhu
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Heng Yang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Yuanyuan Li
- The State Key Laboratory of Bioreactor Engineering East China University of Science and Technology
- Shanghai
- China
| | - Yu Tian
- The State Key Laboratory of Bioreactor Engineering East China University of Science and Technology
- Shanghai
- China
| | - Wei Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Weijun Tang
- Department of Radiology
- Huashan Hospital Affiliated to Fudan University
- Shanghai
- China
| | - Yuan Yuan
- The State Key Laboratory of Bioreactor Engineering East China University of Science and Technology
- Shanghai
- China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai
- China
| |
Collapse
|
29
|
Garbuio L, Zimmermann K, Häussinger D, Yulikov M. Gd(III) complexes for electron-electron dipolar spectroscopy: Effects of deuteration, pH and zero field splitting. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2015; 259:163-73. [PMID: 26342680 DOI: 10.1016/j.jmr.2015.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 08/06/2015] [Accepted: 08/07/2015] [Indexed: 05/15/2023]
Abstract
Spectral parameters of Gd(III) complexes are intimately linked to the performance of the Gd(III)-nitroxide or Gd(III)-Gd(III) double electron-electron resonance (DEER or PELDOR) techniques, as well as to that of relaxation induced dipolar modulation enhancement (RIDME) spectroscopy with Gd(III) ions. These techniques are of interest for applications in structural biology, since they can selectively detect site-to-site distances in biomolecules or biomolecular complexes in the nanometer range. Here we report relaxation properties, echo detected EPR spectra, as well as the magnitude of the echo reduction effect in Gd(III)-nitroxide DEER for a series of Gadolinium(III) complexes with chelating agents derived from tetraazacyclododecane. We observed that solvent deuteration does not only lengthen the relaxation times of Gd(III) centers but also weakens the DEER echo reduction effect. Both of these phenomena lead to an improved signal-to-noise ratios or, alternatively, longer accessible distance range in pulse EPR measurements. The presented data enrich the knowledge on paramagnetic Gd(III) chelate complexes in frozen solutions, and can help optimize the experimental conditions for most types of the pulse measurements of the electron-electron dipolar interactions.
Collapse
Affiliation(s)
- Luca Garbuio
- Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland
| | | | | | - Maxim Yulikov
- Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland.
| |
Collapse
|
30
|
Lytkin AI, Litvinenko VE, Chernov AS, Chernikov VV, Chernyavskaya NV. Thermodynamic characteristics of Nd3+ complexation processes with ethylenediamine-N,N′-disuccinic acid in aqueous solutions at 298.15 K. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2015. [DOI: 10.1134/s0036024415080208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
31
|
Qin J, Liu Q, Zhang J, Chen J, Chen S, Zhao Y, Du J. Rationally Separating the Corona and Membrane Functions of Polymer Vesicles for Enhanced T₂ MRI and Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14043-14052. [PMID: 26046951 DOI: 10.1021/acsami.5b03222] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is an important challenge to in situ grow ultrafine super-paramagnetic iron oxide nanoparticles (SPIONs) in drug carriers such as polymer vesicles (also called polymersomes) while keeping their biodegradability for enhanced T2-weighted magnetic resonance imaging (MRI) and drug delivery. Herein, we present a new strategy by rationally separating the corona and membrane functions of polymer vesicles to solve the above problem. We designed a poly(ethylene oxide)-block-poly(ε-caprolactone)-block-poly(acrylic acid) (PEO43-b-PCL98-b-PAA25) triblock copolymer and self-assembled it into polymer vesicle. The PAA chains in the vesicle coronas are responsible for the in situ nanoprecipitation of ultrafine SPIONs, while the vesicle membrane composed of PCL is biodegradable. The SPIONs-decorated vesicle is water-dispersible, biocompatible, and slightly cytotoxic to normal human cells. Dynamic light scattering, transmission electron microscopy, energy disperse spectroscopy, and vibrating sample magnetometer revealed the formation of ultrafine super-paramagnetic Fe3O4 nanoparticles (1.9 ± 0.3 nm) in the coronas of polymer vesicles. Furthermore, the CCK-8 assay revealed low cytotoxicity of vesicles against normal L02 liver cells without and with Fe3O4 nanoparticles. The in vitro and in vivo MRI experiments confirmed the enhanced T2-weighted MRI sensitivity and excellent metastasis in mice. The loading and release experiments of an anticancer drug, doxorubicin hydrochloride (DOX·HCl), indicated that the Fe3O4-decorated magnetic vesicles have potential applications as a nanocarrier for anticancer drug delivery. Moreover, the polymer vesicle is degradable in the presence of enzyme such as Pseudomonas lipases, and the ultrafine Fe3O4 nanoparticles in the vesicle coronas are confirmed to be degradable under weakly acidic conditions. Overall, this decoration-in-vesicle-coronas strategy provides us with a new insight for preparing water-dispersible ultrafine super-paramagnetic Fe3O4 nanoparticles with promising theranostic applications in biomedicine.
Collapse
Affiliation(s)
- Jingya Qin
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Qiuming Liu
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Junxue Zhang
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Jing Chen
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Shuai Chen
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Yao Zhao
- §Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Analytical Chemistry for Living Biosystems; Beijing Center for Mass Spectrometry; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jianzhong Du
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
- ‡Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai 200072, China
| |
Collapse
|
32
|
Becatti M, Boccalini G, Pini A, Fiorillo C, Bencini A, Bani D, Nistri S. Protection of coronary endothelial cells from cigarette smoke-induced oxidative stress by a new Mn(II)-containing polyamine-polycarboxilate scavenger of superoxide anion. Vascul Pharmacol 2015; 75:19-28. [PMID: 26111717 DOI: 10.1016/j.vph.2015.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 05/26/2015] [Accepted: 06/18/2015] [Indexed: 10/23/2022]
Abstract
Oxidative stress plays a major role in cardiovascular injury and dysfunction induced by cigarette smoke. Smoke-borne pro-oxidants impair endothelial function and predispose to thrombosis, inflammation and atherosclerosis. This in vitro study evaluates whether Mn(II)(4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diacetate).2H2O (Mn(II)(Me2DO2A)), a polyamine-polycarboxilate, Mn(II)-containing O2(-) scavenger, has a direct protective action on guinea pig coronary endothelial (GPCE) cells exposed to cigarette smoke extracts (CSE). Mn(II)(Me2DO2A) (1-10μmol/l) was added to the culture medium together with CSE and maintained for 4h. In parallel experiments, the inactive congener Zn(II)(Me2DO2A), in which Zn(II) replaced the functional Mn(II) center in the same organic scaffold, was used as negative control. Mn(II)(Me2DO2A), mostly at the higher doses (5 and 10μmol/l), significantly increased GPCE cell viability (trypan blue assay), improved mitochondrial activity (MTT test, mitochondrial membrane potential Δψ), reduced cellular apoptosis (mPTP, caspase-3 activity, TUNEL assay), decreased intracellular ROS levels (H2DCFDA), lipoperoxidation (BODIPY 581/591) and decreased protein nitrosylation. Of note, Zn(II)(Me2DO2A) did not preserve cell viability. These findings suggest that Mn(II)(Me2DO2A) is a promising O2(-) scavenging compound able to protect from cigarette smoke-induced oxidative cell injury. In perspective, should its efficacy be confirmed in future in vivo studies, this molecule might represent a therapeutic or preventive drug to counteract cigarette smoke toxicity.
Collapse
Affiliation(s)
- Matteo Becatti
- Department of Experimental & Clinical Biomedical Sciences "Mario Serio", Italy
| | - Giulia Boccalini
- Department of Experimental & Clinical Medicine, Research Unit of Histology & Embryology, Italy
| | - Alessandro Pini
- Department of Experimental & Clinical Medicine, Research Unit of Histology & Embryology, Italy
| | - Claudia Fiorillo
- Department of Experimental & Clinical Biomedical Sciences "Mario Serio", Italy
| | - Andrea Bencini
- Department of Chemistry, University of Florence, Florence, Italy
| | - Daniele Bani
- Department of Experimental & Clinical Medicine, Research Unit of Histology & Embryology, Italy
| | - Silvia Nistri
- Department of Experimental & Clinical Medicine, Research Unit of Histology & Embryology, Italy.
| |
Collapse
|
33
|
|
34
|
Artali R, Baranyai Z, Botta M, Giovenzana GB, Maspero A, Negri R, Palmisano G, Sisti M, Tollari S. Solution thermodynamics, computational and relaxometric studies of ditopic DO3A-based Mn(ii) complexes. NEW J CHEM 2015. [DOI: 10.1039/c4nj01571a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure, stability and magnetic properties of novel ditopic Mn(ii)-complexes were studied by molecular modeling, potentiometric and relaxometric techniques.
Collapse
Affiliation(s)
| | - Zsolt Baranyai
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Hungary
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione Tecnologica
- Università degli Studi del Piemonte Orientale “Amedeo Avogadro”
- I-15121 Alessandria
- Italy
| | - Giovanni B. Giovenzana
- Dipartimento di Scienze del Farmaco
- Università degli Studi del Piemonte Orientale “Amedeo Avogadro”
- I-28100 Novara
- Italy
| | - Angelo Maspero
- Dipartimento di Scienza e Alta Tecnologia
- Università dell'Insubria
- I-22100 Como
- Italy
| | - Roberto Negri
- Dipartimento di Scienze del Farmaco
- Università degli Studi del Piemonte Orientale “Amedeo Avogadro”
- I-28100 Novara
- Italy
| | - Giovanni Palmisano
- Dipartimento di Scienza e Alta Tecnologia
- Università dell'Insubria
- I-22100 Como
- Italy
| | - Massimo Sisti
- Dipartimento di Scienza e Alta Tecnologia
- Università dell'Insubria
- I-22100 Como
- Italy
| | - Stefano Tollari
- Dipartimento di Scienza e Alta Tecnologia
- Università dell'Insubria
- I-22100 Como
- Italy
| |
Collapse
|
35
|
Bani D, Bencini A, Bergonzi MC, Bilia AR, Guccione C, Severi M, Udisti R, Valtancoli B. Enhanced intra-cutaneous delivery of a Mn-containing antioxidant drug by high-frequency ultrasounds. J Pharm Biomed Anal 2014; 106:197-203. [PMID: 25483173 DOI: 10.1016/j.jpba.2014.11.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/07/2014] [Accepted: 11/11/2014] [Indexed: 11/16/2022]
Abstract
This study was carried out to evaluate whether high-frequency ultrasounds, a commonly used aesthetic medicine treatment for skin rejuvenation, may enhance the penetration of the Mn-containing compound Mn(II)(Me2DO2A) (manganese(II) 4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diacetate) biologically active as a superoxide anion scavenger, in the cutaneous layers of ex vivo human skin explants. Although its antioxidant properties are well known and the compound is basically not toxic in animal models, its trans-cutaneous permeation and its toxicological profile at a systemic level have not yet fully analyzed. Therefore, its possible penetration in the deep cutaneous layers was also evaluated. To this purpose, Mn(II)(Me2DO2A) was formulated as emulsion-gel, lipogel and hydrogel. These different formulations were also tested in combination with high-frequency ultrasounds (10-3500 Hz frequency modulation on a 5 MHz main frequency) used as physical permeation enhancers, delivered by a MedVisage™ device (General Project, Montespertoli, Italy) currently used for aesthetic medicine purposes. The permeation of the Mn-containing compound from the formulations was evaluated by inductively coupled plasma atomic emission spectrometry (ICP-AES) measurements of Mn in horizontal cryosections of the skin samples cut at different depths to separate the epidermis, papillary and reticular dermis, as well as by vertical Franz diffusion cells. The results show that the hydrogel formulation yielded the highest transepidermal delivery of Mn(II)(Me2DO2A) and that the application of ultrasounds (3 W, FM 100 Hz, 2×10 s) significantly enhanced its penetration into the epidermis and upper dermal layers. Of note, nearly undetectable amounts of Mn(II)(Me2DO2A) were detected in the reticular dermis and the Franz cell fluid. Although an in vivo confirmation of these results will be necessary, this method may allow to minimize undesired drug passage to the bloodstream and undesired delivery to non-target internal organs and avoiding its renal excretion and release into the environment.
Collapse
Affiliation(s)
- Daniele Bani
- Department of Clinical and Experimental Medicine, Research Unit of Histology & Embryology, University of Florence, Viale Pieraccini, 6, 50139 Firenze, Italy
| | - Andrea Bencini
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Maria Camilla Bergonzi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Anna Rita Bilia
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Clizia Guccione
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Mirko Severi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Roberto Udisti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Firenze, Italy.
| | - Barbara Valtancoli
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 3, 50019 Sesto Fiorentino, Firenze, Italy
| |
Collapse
|
36
|
Nistri S, Boccalini G, Bencini A, Becatti M, Valtancoli B, Conti L, Lucarini L, Bani D. A new low molecular weight, MnII-containing scavenger of superoxide anion protects cardiac muscle cells from hypoxia/reoxygenation injury. Free Radic Res 2014; 49:67-77. [PMID: 25348343 DOI: 10.3109/10715762.2014.979168] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Reperfusion injury after oxygen starvation is a key pathogenic step in ischemic diseases. It mainly consists in oxidative stress, related to mitochondrial derangement and enhanced generation of reactive oxygen species (ROS), mainly superoxide anion (O2(•2)), and peroxynitrite by cells exposed to hypoxia. This in vitro study evaluates whether Mn(II)(4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diacetate).2H2O, or Mn(II)(Me2DO2A), a new low molecular weight, Mn(II)-containing O2(•) scavenger, has a direct protective action on H9c2 rat cardiac muscle cells subjected to hypoxia and reoxygenation. Mn(II)(Me2DO2A) (1 and 10 μmol/l) was added to the culture medium at reoxygenation and maintained for 2 h. In parallel experiments, the inactive congener Zn(II)(Me2DO2A), in which Zn(II) replaced the functional Mn(II) center in the same organic scaffold, was used as negative control. Mn(II)(Me2DO2A) (10 μmol/l) significantly increased cardiac muscle cell viability (trypan blue assay), improved mitochondrial activity (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide test, membrane potential Δψ), reduced apoptosis (mitochondrial permeability transition pore opening, caspase-3, terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick end labeling assay), decreased intracellular ROS levels (2',7'-dichlorodihydrofluorescein diacetate and MitoSOX assays), and decreased protein nitroxidation (nitrotyrosine [NT] expression) and DNA oxidation (8-hydroxy-deoxyguanosine levels). Of note, Zn(II)(Me2DO2A) had no protective effect. The mechanism of Mn(II)(Me2DO2A) relies on concentration-dependent removal of harmful O2(•) generated at reoxygenation from dysfunctional mitochondria in hypoxia-induced cells, as indicated by the MitoSOX assay. This study suggests that Mn(II)(Me2DO2A) is a promising antioxidant drug capable of reducing O2(•)-mediated cell oxidative stress which occurs at reoxygenation after hypoxia. In perspective, Mn(II)(Me2DO2A) might be used to reduce ischemia-reperfusion organ damage in acute vascular diseases, as well as to extend the viability of explanted organs before transplantation.
Collapse
Affiliation(s)
- S Nistri
- Department of Experimental & Clinical Medicine, Section of Anatomy & Histology, Research Unit of Histology & Embryology, University of Florence , Florence , Italy
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Dioury F, Duprat A, Dreyfus G, Ferroud C, Cossy J. QSPR Prediction of the Stability Constants of Gadolinium(III) Complexes for Magnetic Resonance Imaging. J Chem Inf Model 2014; 54:2718-31. [DOI: 10.1021/ci500346w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Fabienne Dioury
- Laboratoire
de Chimie moléculaire, génie des procédés
chimiques et énergétiques (CMGPCE), Conservatoire national des arts et métiers (Cnam), 2 rue Conté, 75003 Paris, France
| | - Arthur Duprat
- Signal
Processing and Machine Learning (SIGMA) Lab, ESPCI ParisTech, 10
rue Vauquelin, 75005 Paris, France
- Laboratoire
de Chimie Organique, ESPCI ParisTech, 10 rue Vauquelin, 75005 Paris, France
| | - Gérard Dreyfus
- Signal
Processing and Machine Learning (SIGMA) Lab, ESPCI ParisTech, 10
rue Vauquelin, 75005 Paris, France
| | - Clotilde Ferroud
- Laboratoire
de Chimie moléculaire, génie des procédés
chimiques et énergétiques (CMGPCE), Conservatoire national des arts et métiers (Cnam), 2 rue Conté, 75003 Paris, France
| | - Janine Cossy
- Laboratoire
de Chimie Organique, ESPCI ParisTech, 10 rue Vauquelin, 75005 Paris, France
| |
Collapse
|
38
|
Stelter M, Molina R, Jeudy S, Kahn R, Abergel C, Hermoso JA. A complement to the modern crystallographer's toolbox: caged gadolinium complexes with versatile binding modes. ACTA ACUST UNITED AC 2014; 70:1506-16. [PMID: 24914962 DOI: 10.1107/s1399004714005483] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 03/10/2014] [Indexed: 11/10/2022]
Abstract
A set of seven caged gadolinium complexes were used as vectors for introducing the chelated Gd(3+) ion into protein crystals in order to provide strong anomalous scattering for de novo phasing. The complexes contained multidentate ligand molecules with different functional groups to provide a panel of possible interactions with the protein. An exhaustive crystallographic analysis showed them to be nondisruptive to the diffraction quality of the prepared derivative crystals, and as many as 50% of the derivatives allowed the determination of accurate phases, leading to high-quality experimental electron-density maps. At least two successful derivatives were identified for all tested proteins. Structure refinement showed that the complexes bind to the protein surface or solvent-accessible cavities, involving hydrogen bonds, electrostatic and CH-π interactions, explaining their versatile binding modes. Their high phasing power, complementary binding modes and ease of use make them highly suitable as a heavy-atom screen for high-throughput de novo structure determination, in combination with the SAD method. They can also provide a reliable tool for the development of new methods such as serial femtosecond crystallography.
Collapse
Affiliation(s)
- Meike Stelter
- University Grenoble Alpes, Institut de Biologie Structurale (IBS), Grenoble, France
| | - Rafael Molina
- Structural Biology and Biocomputing Programme, Spanish Cancer Research Centre (CNIO), Melchor Fdez Almagro, 28029 Madrid, Spain
| | - Sandra Jeudy
- Laboratoire Information Génomique et Structurale, CNRS - UMR7256, Institut de Microbiologie de la Méditerranée, 163 Avenue de Luminy, 13288 Marseille CEDEX 09, France
| | - Richard Kahn
- University Grenoble Alpes, Institut de Biologie Structurale (IBS), Grenoble, France
| | - Chantal Abergel
- Laboratoire Information Génomique et Structurale, CNRS - UMR7256, Institut de Microbiologie de la Méditerranée, 163 Avenue de Luminy, 13288 Marseille CEDEX 09, France
| | - Juan A Hermoso
- Departamento de Cristalografía y Biología Estructural, Instituto Química Física Rocasolano, CSIC, Serrano 119, 28006 Madrid, Spain
| |
Collapse
|
39
|
Massoud SS, Gallo AA, Dartez MJ, Gautreaux JG, Vicente R, Albering JH, Mautner FA. Dinuclear copper(II) complexes bridged by imidazole-4,5-dicarboxylate. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
40
|
Solov’ev V, Varnek A, Tsivadze A. QSPR ensemble modelling of the 1:1 and 1:2 complexation of Co2+, Ni2+, and Cu2+ with organic ligands: relationships between stability constants. J Comput Aided Mol Des 2014; 28:549-64. [DOI: 10.1007/s10822-014-9741-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 04/01/2014] [Indexed: 12/01/2022]
|
41
|
Synthesis, characterization, catalytic, antimicrobial, DNA binding and cleavage studies of N-functionalized tetraazamacrocyclic binuclear copper(II) complexes. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0354-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
42
|
Placidi MP, Botta M, Kálmán FK, Hagberg GE, Baranyai Z, Krenzer A, Rogerson AK, Tóth I, Logothetis NK, Angelovski G. Aryl-Phosphonate Lanthanide Complexes and Their Fluorinated Derivatives: Investigation of Their Unusual Relaxometric Behavior and Potential Application as Dual Frequency1H/19F MRI Probes. Chemistry 2013; 19:11644-60. [DOI: 10.1002/chem.201300763] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Indexed: 11/06/2022]
|
43
|
Unexpected lanthanide cation selectivity of bis-β-ketovinylated diaza-18-crown-6 and open-chain diamines: cooperative effect of the second keto group. J INCL PHENOM MACRO 2013. [DOI: 10.1007/s10847-013-0345-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
44
|
Babailov SP, Stabnikov PA, Zapolotsky EN, Kokovkin VV. Lanthanides as NMR Probes of Fast Molecular Dynamics at High Magnetic Fields and Temperature Sensors: Conformational Interconversion of Erbium Ethylenediaminetetraacetate Complexes. Inorg Chem 2013; 52:5564-9. [DOI: 10.1021/ic400525r] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergey P. Babailov
- A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences,
Av. Lavrentyev 3, Novosibirsk 630090, Russian Federation
| | - Pavel A. Stabnikov
- A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences,
Av. Lavrentyev 3, Novosibirsk 630090, Russian Federation
| | - Eugeny N. Zapolotsky
- A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences,
Av. Lavrentyev 3, Novosibirsk 630090, Russian Federation
| | - Vasily V. Kokovkin
- A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences,
Av. Lavrentyev 3, Novosibirsk 630090, Russian Federation
| |
Collapse
|
45
|
Esteves CV, Lamosa P, Delgado R, Costa J, Désogère P, Rousselin Y, Goze C, Denat F. Remarkable Inertness of Copper(II) Chelates of Cyclen-Based Macrobicycles with Two trans-N-Acetate Arms. Inorg Chem 2013; 52:5138-53. [DOI: 10.1021/ic400015v] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Catarina V. Esteves
- Instituto
de Tecnologia Química e Biológica, Universidade Nova
de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Pedro Lamosa
- Instituto
de Tecnologia Química e Biológica, Universidade Nova
de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Rita Delgado
- Instituto
de Tecnologia Química e Biológica, Universidade Nova
de Lisboa, Av. da República, 2780-157 Oeiras, Portugal
| | - Judite Costa
- iMed.UL, Faculdade de Farmácia,
Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Pauline Désogère
- Institut de Chimie Moléculaire
de l’Université de Bourgogne, UMR CNRS 6302, Université
de Bourgogne, 9, Av. Alain Savary, 21078 Dijon, France
| | - Yoann Rousselin
- Institut de Chimie Moléculaire
de l’Université de Bourgogne, UMR CNRS 6302, Université
de Bourgogne, 9, Av. Alain Savary, 21078 Dijon, France
| | - Christine Goze
- Institut de Chimie Moléculaire
de l’Université de Bourgogne, UMR CNRS 6302, Université
de Bourgogne, 9, Av. Alain Savary, 21078 Dijon, France
| | - Franck Denat
- Institut de Chimie Moléculaire
de l’Université de Bourgogne, UMR CNRS 6302, Université
de Bourgogne, 9, Av. Alain Savary, 21078 Dijon, France
| |
Collapse
|
46
|
|
47
|
Saini N, Varshney R, Tiwari AK, Kaul A, Allard M, Ishar MPS, Mishra AK. Synthesis, conjugation and relaxation studies of gadolinium(iii)-4-benzothiazol-2-yl-phenylamine as a potential brain specific MR contrast agent. Dalton Trans 2013; 42:4994-5003. [DOI: 10.1039/c2dt32391e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
48
|
Babailov SP. Intermolecular dynamics and paramagnetic properties of ethylenediaminetetraacetate complexes with the yttrium subgroup rare earth elements using nuclear magnetic resonance. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50:793-797. [PMID: 23108837 DOI: 10.1002/mrc.3884] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 08/23/2012] [Accepted: 08/29/2012] [Indexed: 06/01/2023]
Abstract
(1)H nuclear magnetic resonance (NMR) measurements are reported for the D(2)O solutions of [Ln(3+)(EDTA(4-))](-) complexes, where EDTA(4-) is ethylenediaminetetraacetate anion, Ln(3+) = Tb(3+) (I), Ho(3+) (II), Tm(3+) (III), Yb(3+) (IV) and Lu(3+) (V). Temperature dependencies of the (1)H NMR spectra of paramagnetic I-IV have been analyzed using the dynamic NMR methods. It is found that the activation free energies (ΔG(‡)(298)) of the intermolecular EDTA ions exchange at [Ln(3+) (EDTA(4-))](-) complexes are 60±3 (I), 66±3 (II), 69±3 (III) and 74±3 (IV) kJ/mol (at pD = 7). A monotonic increase of the free energy of chemical exchange processes along the series of lanthanide [Ln(3+) (EDTA(4-))](-) complexes is probably related to the lanthanide contraction. The obtained results indicate that coordination compounds I-IV may be considered as thermometric NMR sensors and lanthanide paramagnetic probes for in situ temperature control in solution.
Collapse
Affiliation(s)
- Sergey P Babailov
- A.V. Nikolaev's Institute of Inorganic Chemistry SB RAS, Av. Lavrentyev, 3, Novosibirsk, 630090, Russia.
| |
Collapse
|
49
|
James Ratnakar S, Arockia Samy N, Alexander V. A new potential contrast agent for magnetic resonance imaging: Synthesis and relaxivity studies of a gadolinium(III) complex of glucose-6-phosphate conjugated 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.02.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
50
|
Lima LMP, Delgado R, Hermann P, Ševčík R, Lubal P, Carvalho HF, Martins AF, Tóth É, Geraldes CFGC. Tris(phosphonomethyl)cyclen Derivatives: Thermodynamic Stability, Kinetics, Solution Structure, and Relaxivity of Ln3+ Complexes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|