Article
Biochemistry & Molecular Biology
Sherin Abdelrahman, Mawadda Alghrably, Marcello Campagna, Charlotte Armgard Emma Hauser, Mariusz Jaremko, Joanna Izabela Lachowicz
Summary: Metformin forms stable complexes with copper ions, leading to enhanced antiproliferative effect in cancer cells. It reduces cell number and viability in SW1222 and K562 cells, as well as in K562-200 multidrug-resistant cells. Additionally, metformin has been noted to have lower cancer incidence in diabetic patients.
Article
Chemistry, Multidisciplinary
Alexander S. Ivanov, Megan E. Simms, Vyacheslav S. Bryantsev, Paul D. Benny, Justin R. Griswold, Laetitia H. Delmau, Nikki A. Thiele
Summary: In this study, we report the complexation thermodynamics of Ra2+ with two biomedically-relevant chelators, DOTA and macropa. Our findings reveal the highest affinity chelator for Ra2+ to date and advance our understanding of key factors determining complex stability and selectivity for this underexplored ion.
CHEMICAL COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Antonio Gigliuto, Rosalia Maria Cigala, Anna Irto, Maria Rosa Felice, Alberto Pettignano, Demetrio Milea, Stefano Materazzi, Concetta De Stefano, Francesco Crea
Summary: The study investigated the interactions of dopamine with methylmercury(II), magnesium(II), calcium(II), and tin(II) at different ionic strengths and temperatures, and evaluated the sequestering ability of dopamine towards these cations. The results showed that entropy is the driving force of the process, and the stoichiometry of the precipitates formed depends on the metal:ligand ratios and concentrations of the starting solutions.
Correction
Chemistry, Physical
Ravi D. O'Brien, Thomas J. Summers, Danil S. Kaliakin, David C. Cantu
Summary: Correction is made for the solution structures and relative stability constants of lanthanide-EDTA complexes predicted from computation in the study conducted by Ravi D. O'Brien et al.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Giuseppina A. Corrente, Luana Malacaria, Amerigo Beneduci, Emilia Furia, Tiziana Marino, Gloria Mazzone
Summary: In this study, the complexation of quercetin with aluminum, iron, and copper in aqueous solution was investigated using a combination of experimental techniques and computational methods. Results showed specific ligand-to-metal ion ratios for complexation in aqueous solution.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Aleksandra Marciniak, Lorenzo Pacini, Anna Maria Papini, Justyna Brasun
Summary: There is a growing interest in bicyclic peptides among scientists due to their advantageous properties. In this study, a new bicyclic peptide (BCL) was synthesized and its coordination abilities with copper(ii) ions were analyzed. The results showed the formation of both mono- and dinuclear complexes.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Luana Malacaria, Chiara La Torre, Emilia Furia, Alessia Fazio, Maria Cristina Caroleo, Erika Cione, Luca Gallelli, Tiziana Marino, Pierluigi Plastina
Summary: This work investigated the complexation of luteolin with Al(III), Fe(III), and Cu(II), revealing that the Fe(III)-Lu complex exhibited the highest antioxidant and anti-inflammatory properties. The computational approach also showed the coordination sites of luteolin with different metal ions.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Alessandra G. Ritacca, Luana Malacaria, Emilia Sicilia, Emilia Furia, Gloria Mazzone
Summary: This study investigates the ability of L-ascorbic acid to form complexes with Fe3+ and Cu2+ ions using potentiometric measurements and DFT computations, and identifies the most reliable complex structures.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Antonio Gigliuto, Rosalia Maria Cigala, Anna Irto, Maria Rosa Felice, Alberto Pettignano, Concetta De Stefano, Francesco Crea
Summary: The interactions of dopamine with cadmium, copper, and uranyl were studied at different ionic strengths and temperatures, resulting in different speciation models. The studies showed that dopamine has different sequestering abilities towards cadmium, copper, and uranyl ions, with uranyl having the highest sequestering ability followed by copper and then cadmium.
Article
Chemistry, Inorganic & Nuclear
Ekaterina V. Matazova, Bayirta V. Egorova, Anastasia D. Zubenko, Anna V. Pashanova, Artem A. Mitrofanov, Olga A. Fedorova, Stanislav V. Ermolaev, Aleksandr N. Vasiliev, Stepan N. Kalmykov
Summary: A comparative study between the complexes of H(4)DOTA and H(4)BATA with Ac3+ was conducted, and the stability constants of Ac3+ and La3+ complexes were determined, showing the exceptional thermodynamic stability of H(4)BATA complexes. DFT calculations revealed the inclusion of La3+ and Ac3+ cations in the macrocyclic cavity. In addition, the stability of the [AcBATA](-) complex was demonstrated in blood serum and normal mice, making H(4)BATA a potential candidate for radiopharmaceuticals.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Analytical
Nevena Dajic, Biljana Otasevic, Andelija Malenovic, Mira Zecevic, Ulrike Holzgrabe, Ana Protic
Summary: In RP-HPLC, the binding between CD cavity and guest molecule is a dynamic process. The stability of the complex can be measured by the reduction in analyte's retention time. It was found that under certain conditions, the retention time of some analytes may be prolonged.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Article
Geochemistry & Geophysics
Olga N. Filimonova, Boris R. Tagirov, Alexander Zotov, Nina N. Baranova, Yana Bychkova, Dmitry A. Tyurin, Dmitriy A. Chareev, Maximilian S. Nickolsky
Summary: The solubility of cooperite PtS(cr) in aqueous sulfide solutions was measured at various temperatures and pressures. The study found that the concentration of Pt increases with temperature, with different complexes dominating at low and high temperatures. The influence of NaCl on PtS(cr) solubility was negligible.
Article
Geochemistry & Geophysics
Nikolay D. Trofimov, Boris R. Tagirov, Nikolay N. Akinfiev, Vladimir L. Reukov, Maximilian S. Nickolsky, Irina Yu. Nikolaeva, Maria E. Tarnopolskaya, Andrey A. Afanasyev
Summary: The important Cu reserves in porphyry deposits were formed by hydrothermal fluids containing Cl- and S-, which transported and deposited metals within the magmatic-hydrothermal ore systems. The solubility of chalcocite Cu2S in these fluids was determined at different temperatures and pressures, and the results showed that Cu-Cl complexes dominate over mixed CuHS-Cl complexes. Thermodynamic properties of CuHS(aq), Cu(HS)(2)(-), CuCl(aq), and CuCl2- were predicted using the HKF (Helgeson-Kirkham-Flowers) model equation of state. The AD (Akinfiev and Diamond) equation of state was also derived for CuCl(aq) in low-density fluids. The obtained data provide insights into the behavior of copper in ore-forming fluids.
Article
Multidisciplinary Sciences
George H. R. Northover, Yiru Mao, Haris Ahmed, Salvador Blasco, Ramon Vilar, Enrique Garcia-Espana, Dominik J. Weiss
Summary: This study explores the impact of salinization on the zinc(II) binding efficiency of major siderophore functional groups, showing that plant siderophores are more sensitive to salinity compared to bacterial and fungal siderophores in terms of productivity.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Korey P. Carter, Katherine M. Shield, Kurt F. Smith, Zachary R. Jones, Jennifer N. Wacker, Leticia Arnedo-Sanchez, Tracy M. Mattox, Liane M. Moreau, Karah E. Knope, Stosh A. Kozimor, Corwin H. Booth, Rebecca J. Abergel
Summary: Transplutonium elements are a group of metals at the edge of the periodic table, with properties that are less predictable due to their scarcity and radioactivity. Studies on the heaviest element einsteinium highlight the need for further exploration of actinide elements, especially those that are scarce and short-lived.
Article
Chemistry, Inorganic & Nuclear
Damiano Cirri, Lorenzo Chiaverini, Alessandro Pratesi, Tiziano Marzo
Summary: Since the accidental discovery of cisplatin, numerous inorganic molecules have been synthesized in search of new anticancer drugs with powerful activity and safety. Unfortunately, the ideal combination has yet to be achieved. Apart from cisplatin, only two platinum-based drugs, carboplatin and oxaliplatin, have been approved globally, both of which are cisplatin-like molecules. Therefore, we aim to summarize the reasons for the lack of newly approved molecules and rationalize the critical steps in the discovery and approval process of improved anticancer metallodrugs, stimulating an open and critical scientific debate.
COMMENTS ON INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Francesca Binacchi, Cassandra Elia, Damiano Cirri, Corjan van de Griend, Xue-Quan Zhou, Luigi Messori, Sylvestre Bonnet, Alessandro Pratesi, Tarita Biver
Summary: Metal compounds are attractive ligands for various nucleic acids. Five metal complexes with aminopyridyl-2,2'-bipyridine tetradentate ligands and quasi-planar geometry were studied for their binding to different nucleic acid molecules. The binding preferences and structural features of the metal complexes were analyzed using spectroscopy and melting methods.
DALTON TRANSACTIONS
(2023)
Article
Biochemistry & Molecular Biology
Giovanni Canil, Juan Gurruchaga-Pereda, Simona Braccini, Lorella Marchetti, Tiziana Funaioli, Fabio Marchetti, Alessandro Pratesi, Luca Salassa, Chiara Gabbiani
Summary: Photoactivatable Pt(IV) prodrugs have great potential as metal-based drugs due to their chemical inertness in oxidized form and selective targeting compared to Pt(II) compounds. A new Pt(IV) complex, soluble in water and unreactive until reduction, was synthesized. The complex exhibited rapid and efficient photoreduction with visible light, facilitated by a catalytic system based on flavin and NADH. The reactivity of the prodrug against biological targets was only observed after photoreduction to its Pt(II) analogue.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Ester Giorgi, Francesca Binacchi, Carlo Marotta, Damiano Cirri, Chiara Gabbiani, Alessandro Pratesi
Summary: Despite progress, cancer still poses challenges due to side effects, resistance, and poor selectivity of current metal-based therapies. New strategies reviewed include using heterobimetallic complexes containing different metal centers and conjugating metal complexes to target cancer cells. Examples of targeting organelles and the entire cancer cell were highlighted.
Article
Biochemistry & Molecular Biology
Damiano Cirri, Andrea Geri, Lara Massai, Michele Mannelli, Tania Gamberi, Francesca Magherini, Matteo Becatti, Chiara Gabbiani, Alessandro Pratesi, Luigi Messori
Summary: A panel of four novel gold(I) complexes, inspired by the clinically established gold drug auranofin, were prepared and characterized. The differences in their interactions with model proteins were analyzed, and their cytotoxic effects on ovarian cancer cells were quantitated. These novel gold complexes showed potential as effective anticancer agents.
Article
Chemistry, Inorganic & Nuclear
Luisa Ronga, Iogann Tolbatov, Ester Giorgi, Paulina Pisarek, Christine Enjalbal, Alessandro Marrone, Diego Tesauro, Ryszard Lobinski, Tiziano Marzo, Damiano Cirri, Alessandro Pratesi
Summary: A panel of four gold(I) complexes, inspired by auranofin, were reported by the research group. These complexes showed similarities to auranofin but exhibited distinct features, such as lower log P values. Experimental and theoretical studies revealed that structural modifications on the phosphine ligand of auranofin can impact the chemical properties and biological mode of action of the derivatives.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Carlo Marotta, Ester Giorgi, Francesca Binacchi, Damiano Cirri, Chiara Gabbiani, Alessandro Pratesi
Summary: The discovery of cisplatin's antineoplastic properties in 1965 renewed the interest in metal complexes for medicinal applications. Researchers have been studying safer and more effective alternatives to cisplatin, including platinum(IV)-based compounds. These compounds have attracted attention because they can be reduced in cells to activate the platinum center and offer advantages such as reducing side effects. This review summarizes the recent achievements in the field of Pt(IV) prodrugs.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Katarzyna Regulska, Agnieszka Matera-Witkiewicz, Aleksandra Mikolajczyk, Beata J. Stanisz
Summary: The study aimed to identify the degradation product of ramipril under dry air and assess its potential modes of carcinogenicity. The results showed that ramipril rapidly degraded to a diketopiperazine derivative (DKP) under dry air. DKP was potentially carcinogenic and genotoxic at high concentrations, but not mutagenic itself. However, it was susceptible to forming mutagenic nitroso-metabolites. Further in vivo experiments are needed to determine the safe threshold for human exposure to DKP and evaluate the impact of nitroso-derivatives on humans.
APPLIED SCIENCES-BASEL
(2023)
Article
Biochemistry & Molecular Biology
Jakub Lach, Magdalena Krupinska, Aleksandra Mikolajczyk, Dominik Strapagiel, Pawel Staczek, Agnieszka Matera-Witkiewicz
Summary: The aim of this study was to investigate the antimicrobial activity against multidrug-resistant human pathogens of three peptides, synthesized based on sequences identified in metagenomes from saline environments, and verify the cytotoxicity and haemolytic properties of the tested peptides. The study found that the P1 and P3 peptides exhibited no cytotoxic or haemolytic activity against human cells and showed growth inhibition of certain pathogens.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Damiano Cirri, Tiziano Marzo, Alessandro Pratesi
Summary: This article describes an unprecedented palladium/arsenic-based catalytic cycle for the hydration of nitriles to amides, which takes place under exceptionally mild conditions of neutral pH and moderate temperature (60°C). The versatility of this new catalytic cycle was tested on various nitriles, ranging from aliphatic to aromatic. The effect of ring substitution with electron withdrawing and electron donating groups, as well as potentially interferent functional groups such as hydroxy or pyridinic nitrogen, was investigated. Furthermore, a pilot study on the potential scalability of this approach for industrial production is presented, demonstrating its potential and rapid scale-up capability.
FRONTIERS IN CHEMISTRY
(2023)
Article
Medicine, General & Internal
Agnieszka Matera-Witkiewicz, Magdalena Krupinska, Adrian Doroszko, Malgorzata Trocha, Katarzyna Giniewicz, Krzysztof Kujawa, Maciej Rabczynski, Marta Obremska, Edwin Kuznik, Pawel Lubieniecki, Barbara Adamik, Krzysztof Kaliszewski, Katarzyna Kilis-Pstrusinska, Michal Pomorski, Marcin Protasiewicz, Marcin Madziarski, Janusz Sokolowski, Ewa A. Jankowska, Katarzyna Madziarska
Summary: Advanced age is a predictor for COVID-19 severity. The VACO index, along with past medical records, can be used to predict short-term mortality and disease progression.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Chemistry, Multidisciplinary
Veronica Ghini, Michele Mannelli, Lara Massai, Andrea Geri, Stefano Zineddu, Tania Gamberi, Luigi Messori, Paola Turano
Summary: NMR metabolomics is a valuable approach for studying changes in cancer cell metabolism caused by anticancer drugs. This study investigates the significant metabolic alterations induced by two cytotoxic gold carbene compounds in A2780 ovarian cancer cells and compares them to auranofin, providing insights into the underlying mechanisms.
Article
Chemistry, Inorganic & Nuclear
Gabriella Tito, Romualdo Troisi, Giarita Ferraro, Andrea Geri, Lara Massai, Luigi Messori, Filomena Sica, Antonello Merlino
Summary: The reaction between the cytotoxic compound dirhodium tetraacetate and a B-DNA double helical dodecamer was studied using X-ray crystallography and mass spectrometry. The structure of the dirhodium/DNA adduct revealed a dimetallic center binding to an adenine through axial coordination. Additional information was obtained through ESI MS measurements. Comparison with previous data for cisplatin indicated a significant difference in the way these two metallodrugs react with the DNA dodecamer.
DALTON TRANSACTIONS
(2023)
Article
Biochemistry & Molecular Biology
Beatrice Campanella, Simona Braccini, Giulio Bresciani, Michele De Franco, Valentina Gandin, Federica Chiellini, Alessandro Pratesi, Guido Pampaloni, Lorenzo Biancalana, Fabio Marchetti
Summary: Diiron vinyliminium complexes are promising organometallics with potential anticancer activity. The synthesis and evaluation of [Fe2Cp2(CO)(mu-CO){mu-eta(1):eta(3)-C(R-3)C(R-4)CN(R-1)(R-2)}]CF3SO3 (2a-c, 4a-d) complexes were performed, including their solubility in D2O, Log P-ow, stability in D2O/Me2SO-d(6) mixture, and antiproliferative activity against ovarian cancer cell lines A2780 and A2780cisR, as well as the nontumoral cell line Balb/3T3 clone A31. The cytotoxicity data of 50 vinyliminium complexes were correlated with the structural properties, showing a positive correlation between octanol-water partition coefficient and relative antiproliferative activity on ovarian cancer cell lines. However, the effects of different substituents provided guidelines for the development of novel, more effective compounds. Three additional complexes (4p-r) were designed, synthesized, and biologically investigated, revealing their ability to inhibit thioredoxin reductase enzyme and induce cancer cell production of reactive oxygen species.
Article
Chemistry, Inorganic & Nuclear
Joanna Watly, Klaudia Szarszon, Aleksandra Mikolajczyk, Manuela Grelich-Mucha, Agnieszka Matera-Witkiewicz, Joanna Olesiak-Banska, Magdalena Rowinska-Zyrek
Summary: The correlation between metal binding mode, structure, morphology, and biological activity of shepherin I-Zn-(II) and shepherin I-Cu-(II) complexes are investigated. It is found that the binding of Zn-(II) ions to shepherin I leads to structural changes and fibril formation, resulting in strong antifungal activity. In contrast, the shepherin I-Cu-(II) complex does not exhibit the same effects.
INORGANIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Michael Ramek, Jasmina Sabolovic
Summary: This paper investigates the geometries, energy landscapes, and magnetic parameters of copper(II) amino acid compounds using density functional theory calculations. The results show that certain conformers with histaminate-like and glycine-like modes have low Gibbs free energies and high metal-binding affinities. The predicted conformations reproduce the experimental electron paramagnetic resonance parameters.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Wei Tian, Wen Zhong, Zengyan Yang, Ling Chen, Shijie Lin, Yanping Li, Yuxing Wang, Peilin Yang, Xing Long
Summary: A series of novel dibutyltin complexes based on salen-like ligands were synthesized and characterized. Complex S03 showed excellent in vitro anticancer activity and induced cancer cell death through multiple mechanisms. This study reveals new mechanisms of organotin complexes and provides new insights into the development of organotin metal complexes as anticancer drugs.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Natalie C. Korkola, Martin J. Stillman
Summary: Many proteins require a metal cofactor for their function, and these metals play a role in protein folding. The study found that the metallation rates of different metal binding pathways are influenced by pH, with the less cooperative pathway being more affected by low pH conditions. Specific mixtures of structures are formed in the initial steps of metallation, and unfolding the disordered apo-MT structure hinders the formation of these preliminary structures. The compact conformation of the native apo-MT allows for rapid formation of metal-thiolate structures with high affinity, providing protection from oxidation.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Boxuan Yang, Xitong Song, Binju Wang
Summary: The diiron active site plays a crucial role in catalytic transformations in both biological and chemical systems. Recent advancements in the field include the synthesis of biomimetic diiron catalysts inspired by the active structure of soluble methane monooxygenase (sMMO), which have been successfully applied to the dehydrogenation of indolines.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Christina N. Banti, Angeliki A. Piperoudi, Catherine P. Raptopoulou, Vassilis Psycharis, Constantinos M. Athanassopoulos, Sotiris K. Hadjikakou
Summary: Two copper(I) polymorphs with mitochondria-targeting properties were successfully prepared via metal ion conjugation. These compounds showed promising activities in DNA binding, enzyme inhibition, and cancer cell inhibition. The molecular mechanisms of action were investigated.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2024)
