1
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Troisi R, Tito G, Ferraro G, Sica F, Massai L, Geri A, Cirri D, Messori L, Merlino A. On the mechanism of action of arsenoplatins: arsenoplatin-1 binding to a B-DNA dodecamer. Dalton Trans 2024; 53:3476-3483. [PMID: 38270175 DOI: 10.1039/d3dt04302a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The reaction of Pt-based anticancer agents with arsenic trioxide affords robust complexes known as arsenoplatins. The prototype of this family of anticancer compounds is arsenoplatin-1 (AP-1) that contains an As(OH)2 fragment linked to a Pt(II) moiety derived from cisplatin. Crystallographic and spectrometric studies of AP-1 binding to a B-DNA double helix dodecamer are presented here, in comparison with cisplatin and transplatin. Results reveal that AP-1, cisplatin and transplatin react differently with the DNA model system. Notably, in the AP-1/DNA systems, the Pt-As bond can break down with time and As-containing fragments can be released. These results have implications for the understanding of the mechanism of action of arsenoplatins.
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Affiliation(s)
- Romualdo Troisi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cintia, 80126, Naples, Italy.
- Institute of Biostructures and Bioimaging, CNR, via Pietro Castellino 111, 80131 Naples, Italy
| | - Gabriella Tito
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cintia, 80126, Naples, Italy.
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cintia, 80126, Naples, Italy.
| | - Filomena Sica
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cintia, 80126, Naples, Italy.
| | - Lara Massai
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Andrea Geri
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Damiano Cirri
- Department of Chemistry and Industrial Chemistry (DCCI), University of Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Luigi Messori
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cintia, 80126, Naples, Italy.
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2
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La Manna S, Di Natale C, Panzetta V, Leone M, Mercurio FA, Cipollone I, Monti M, Netti PA, Ferraro G, Terán A, Sánchez-Peláez AE, Herrero S, Merlino A, Marasco D. A Diruthenium Metallodrug as a Potent Inhibitor of Amyloid-β Aggregation: Synergism of Mechanisms of Action. Inorg Chem 2024; 63:564-575. [PMID: 38117944 PMCID: PMC10777406 DOI: 10.1021/acs.inorgchem.3c03441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/22/2023]
Abstract
The physical and chemical properties of paddlewheel diruthenium compounds are highly dependent on the nature of the ligands surrounding the bimetallic core. Herein, we compare the ability of two diruthenium compounds, [Ru2Cl(D-p-FPhF)(O2CCH3)3]·H2O (1) (D-p-FPhF- = N,N'-bis(4-fluorophenyl)formamidinate) and K3[Ru2(O2CO)4]·3H2O (2), to act as inhibitors of amyloid aggregation of the Aβ1-42 peptide and its peculiar fragments, Aβ1-16 and Aβ21-40. A wide range of biophysical techniques has been used to determine the inhibition capacity against aggregation and the possible mechanism of action of these compounds (Thioflavin T fluorescence and autofluorescence assays, UV-vis absorption spectroscopy, circular dichroism, nuclear magnetic resonance, mass spectrometry, and electron scanning microscopy). Data show that the most effective inhibitory effect is shown for compound 1. This compound inhibits fiber formation and completely abolishes the cytotoxicity of Aβ1-42. The antiaggregatory capacity of this complex can be explained by a binding mechanism of the dimetallic units to the peptide chain along with π-π interactions between the formamidinate ligand and the aromatic side chains. The results suggest the potential use of paddlewheel diruthenium complexes as neurodrugs and confirm the importance of the steric and charge effects on the properties of diruthenium compounds.
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Affiliation(s)
- Sara La Manna
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
| | - Concetta Di Natale
- Department
of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
| | - Valeria Panzetta
- Department
of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
- Interdisciplinary
Research Centre on Biomaterials (CRIB), University of Naples Federico II, Istituto Italiano di Tecnologia, 80125 Naples, Italy
| | - Marilisa Leone
- Institute
of Biostructures and Bioimaging - CNR, 80145 Naples, Italy
| | | | - Irene Cipollone
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy
- CEINGE
Biotecnologie
Avanzate “Franco Salvatore” S.c.a r.l., 80131 Naples, Italy
| | - Maria Monti
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy
- CEINGE
Biotecnologie
Avanzate “Franco Salvatore” S.c.a r.l., 80131 Naples, Italy
| | - Paolo A. Netti
- Department
of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
- Interdisciplinary
Research Centre on Biomaterials (CRIB), University of Naples Federico II, Istituto Italiano di Tecnologia, 80125 Naples, Italy
| | - Giarita Ferraro
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy
| | - Aarón Terán
- MatMoPol
Research Group, Department of Inorganic Chemistry, Faculty of Chemical
Science, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Ana E. Sánchez-Peláez
- MatMoPol
Research Group, Department of Inorganic Chemistry, Faculty of Chemical
Science, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Santiago Herrero
- MatMoPol
Research Group, Department of Inorganic Chemistry, Faculty of Chemical
Science, Complutense University of Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Antonello Merlino
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy
| | - Daniela Marasco
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
- Institute
of Biostructures and Bioimaging - CNR, 80145 Naples, Italy
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3
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Lucignano R, Spadaccini R, Merlino A, Ami D, Natalello A, Ferraro G, Picone D. Structural insights and aggregation propensity of a super-stable monellin mutant: A new potential building block for protein-based nanostructured materials. Int J Biol Macromol 2024; 254:127775. [PMID: 38287601 DOI: 10.1016/j.ijbiomac.2023.127775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/12/2023] [Accepted: 10/27/2023] [Indexed: 01/31/2024]
Abstract
Protein fibrillation is commonly associated with pathologic amyloidosis. However, under appropriate conditions several proteins form fibrillar structures in vitro that can be used for biotechnological applications. MNEI and its variants, firstly designed as single chain derivatives of the sweet protein monellin, are also useful models for protein fibrillary aggregation studies. In this work, we have drawn attention to a protein dubbed Mut9, already characterized as a "super stable" MNEI variant. Comparative analysis of the respective X-ray structures revealed how the substitutions present in Mut9 eliminate several unfavorable interactions and stabilize the global structure. Molecular dynamic predictions confirmed the presence of a hydrogen-bonds network in Mut9 which increases its stability, especially at neutral pH. Thioflavin-T (ThT) binding assays and Fourier transform infrared (FTIR) spectroscopy indicated that the aggregation process occurs both at acidic and neutral pH, with and without addition of NaCl, even if with a different kinetics. Accordingly, Transmission Electron Microscopy (TEM) showed a fibrillar organization of the aggregates in all the tested conditions, albeit with some differences in the quantity and in the morphology of the fibrils. Our data underline the great potential of Mut9, which combines great stability in solution with the versatile conversion into nanostructured biomaterials.
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Affiliation(s)
- Rosanna Lucignano
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, 80126 Naples, Italy
| | - Roberta Spadaccini
- Department of Science and Technology, University of Sannio, Via de Sanctis, 82100 Benevento, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, 80126 Naples, Italy
| | - Diletta Ami
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 20126 Milano, Italy
| | - Antonino Natalello
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 20126 Milano, Italy
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, 80126 Naples, Italy.
| | - Delia Picone
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, 80126 Naples, Italy.
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4
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Terán A, Ferraro G, Imbimbo P, Sánchez-Peláez AE, Monti DM, Herrero S, Merlino A. Steric hindrance and charge influence on the cytotoxic activity and protein binding properties of diruthenium complexes. Int J Biol Macromol 2023; 253:126666. [PMID: 37660867 DOI: 10.1016/j.ijbiomac.2023.126666] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
Paddlewheel diruthenium complexes are being used as metal-based drugs. It has been proposed that their charge and steric properties determine their selectivity towards proteins. Here, we explore these parameters using the first water-soluble diruthenium complex bearing two formamidinate ligands, [Ru2Cl(DPhF)2(O2CCH3)2], and two derivatives, [Ru2Cl(DPhF)(O2CCH3)3] and K2[Ru2(DPhF)(CO3)3] (DPhF- = N,N'-diphenylformamidinate), with one formamidinate. Their protein binding properties have been assessed employing hen egg white lysozyme (HEWL). The results confirm the relationship between the type of interaction (coordinate/non-coordinate bonds) and the charge of diruthenium complexes. The crystallization medium is also a key factor. In all cases, diruthenium species maintain the M-M bond and produce stable adducts. The antiproliferative properties of these diruthenium complexes have been evaluated on an eukaryotic cell-based model. Our data show a correlation between the number of the formamidinate ligands and the anticancer activity of the diruthenium derivatives against human epithelial carcinoma cells. Increased cytotoxicity may be related to increased steric hindrance and Ru25+ core electronic density. However, the effect of increasing the lipophilicity of diruthenium species by introducing a second N,N'-diphenylformamidinate must be also considered. This work illustrates a systematic approach to shed light on the relevant properties of diruthenium compounds to design metal-based metallodrugs and diruthenium metalloenzymes.
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Affiliation(s)
- Aarón Terán
- MatMoPol Research Group, Department of Inorganic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126 Naples, Italy
| | - Paola Imbimbo
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126 Naples, Italy
| | - Ana E Sánchez-Peláez
- MatMoPol Research Group, Department of Inorganic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
| | - Daria Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126 Naples, Italy
| | - Santiago Herrero
- MatMoPol Research Group, Department of Inorganic Chemistry, Faculty of Chemical Sciences, Complutense University of Madrid, Avda. Complutense s/n, 28040 Madrid, Spain.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126 Naples, Italy.
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5
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Ferraro G, Tito G, Sciortino G, Garribba E, Merlino A. Stabilization and Binding of [V 4 O 12 ] 4- and Unprecedented [V 20 O 54 (NO 3 )] n- to Lysozyme upon Loss of Ligands and Oxidation of the Potential Drug V IV O(acetylacetonato) 2. Angew Chem Int Ed Engl 2023; 62:e202310655. [PMID: 37768728 DOI: 10.1002/anie.202310655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/28/2023] [Accepted: 09/28/2023] [Indexed: 09/29/2023]
Abstract
High-resolution crystal structures of lysozyme in the presence of the potential drug VIV O(acetylacetonato)2 under two different experimental conditions have been solved. The crystallographic study reveals the loss of the ligands, the oxidation of VIV to VV and the subsequent formation of adducts of the protein with two different polyoxidovanadates: [V4 O12 ]4- , which interacts with lysozyme non-covalently, and the unprecedented [V20 O54 (NO3 )]n- , which is covalenty bound to the side chain of an aspartate residue of symmetry related molecules.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126, Napoli, Italy
| | - Gabriella Tito
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126, Napoli, Italy
| | - Giuseppe Sciortino
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, 16, Avinguda dels Països Catalans, 43007, Tarragona, Spain
| | - Eugenio Garribba
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, I-07100, Sassari, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126, Napoli, Italy
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6
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Ferraro G, Sanfilippo V, Chiaverini L, Satriano C, Marzo T, Merlino A, La Mendola D. Cisplatin binding to angiogenin protein: new molecular pathways and targets for the drug's anticancer activity. Dalton Trans 2023. [PMID: 37337706 DOI: 10.1039/d3dt01517c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Cisplatin (CisPt), a platinum-based chemotherapeutic widely used in the treatment of various cancers, has multiple mechanisms of action, including nuclear DNA (nDNA) and mitochondrial DNA (mDNA) damage and cytoskeletal perturbations affecting, in turn, the membrane transporter activity. CisPt binding to proteins and enzymes may modulate its biochemical mechanism of action and is associated with cancer cell resistance to the drug. In this work, we investigate the interaction between cisplatin and angiogenin (Ang), a protein strongly expressed in many types of cancer and a potent angiogenic factor. The adduct formed upon reaction of CisPt with Ang (Ang@CisPt) was characterized by X-ray crystallography to evidence the exact platination site and by UV-visible (UV-vis) absorption and circular dichroism (CD) spectroscopies to shed light on any possible change in the protein conformation. Furthermore, high-resolution electrospray ionization (ESI) mass spectrometry was utilized to evaluate the Ang : CisPt stoichiometry of the Ang@CisPt adduct. The effect of the Ang@CisPt adduct on a prostate cancer cell line (PC-3) was tested by colorimetric assays in terms of cell viability, at both levels of nuclear and mitochondrial damage, and reactive oxygen species (ROS) production. Cellular imaging by laser scanning confocal microscopy (LSM) was utilized to scrutinize the cytoskeleton actin reorganization and the lysosome and mitochondria organelle perturbation. These studies highlight the possibility of new molecular pathways and targets for CisPt activity.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Napoli, Italy.
| | - Vanessa Sanfilippo
- NanoHybrid BioInterfaces Laboratory (NHBIL), Department of Chemical Sciences, University of Catania, viale Andrea Doria, 6, 95125 Catania, Italy.
| | - Lorenzo Chiaverini
- Department of Pharmacy, University of Pisa, via Bonanno Pisano 6, 56126 Pisa, Italy.
| | - Cristina Satriano
- NanoHybrid BioInterfaces Laboratory (NHBIL), Department of Chemical Sciences, University of Catania, viale Andrea Doria, 6, 95125 Catania, Italy.
| | - Tiziano Marzo
- Department of Pharmacy, University of Pisa, via Bonanno Pisano 6, 56126 Pisa, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Napoli, Italy.
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa, via Bonanno Pisano 6, 56126 Pisa, Italy.
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7
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La Manna S, Roviello V, Napolitano F, Malfitano AM, Monaco V, Merlino A, Monti M, Kowalski K, Szczupak Ł, Marasco D. Metal-Complexes Bearing Releasable CO Differently Modulate Amyloid Aggregation. Inorg Chem 2023. [PMID: 37338927 DOI: 10.1021/acs.inorgchem.3c01522] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Neurodegenerative diseases are often associated with an uncontrolled amyloid aggregation. Hence, many studies are oriented to discover new compounds that are able to modulate self-recognition mechanisms of proteins involved in the development of these pathologies. Herein, three metal-complexes able to release carbon monoxide (CORMs) were analyzed for their ability to affect the self-aggregation of the amyloidogenic fragment of nucleophosmin 1, corresponding to the second helix of the three-helix bundle located in the C-terminal domain of the protein, i.e., NPM1264-277, peptide. These complexes were two cymantrenes coordinated to the nucleobase adenine (Cym-Ade) and to the antibiotic ciprofloxacin (Cym-Cipro) and a Re(I)-compound containing 1,10-phenanthroline and 3-CCCH2NHCOCH2CH2-6-bromo-chromone as ligands (Re-Flavo). Thioflavin T (ThT) assay, UV-vis absorption and fluorescence spectroscopies, scanning electron microscopy (SEM), and electrospray ionization mass spectrometry (ESI-MS) indicated that the three compounds have different effects on the peptide aggregation. Cym-Ade and Cym-Cipro act as aggregating agents. Cym-Ade induces the formation of NPM1264-277 fibers longer and stiffer than that formed by NPM1264-277 alone; irradiation of complexes speeds the formation of fibers that are more flexible and thicker than those found without irradiation. Cym-Cipro induces the formation of longer fibers, although slightly thinner in diameter. Conversely, Re-Flavo acts as an antiaggregating agent. Overall, these results indicate that metal-based CORMs with diverse structural features can have a different effect on the formation of amyloid fibers. A proper choice of ligands attached to metal can allow the development of metal-based drugs with potential application as antiamyloidogenic agents.
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Affiliation(s)
- Sara La Manna
- Department of Pharmacy, University of Naples "Federico II", 80131 Naples, Italy
| | - Valentina Roviello
- Department of Chemical, Materials, and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
| | - Fabiana Napolitano
- Department of Translational Medical Science, University of Naples "Federico II", 80131 Naples, Italy
| | - Anna Maria Malfitano
- Department of Translational Medical Science, University of Naples "Federico II", 80131 Naples, Italy
| | - Vittoria Monaco
- Department of Chemical Sciences, University of Naples "Federico II", 80126 Naples, Italy
- CEINGE Biotecnologie Avanzate S.c.a r.l. "Franco Salvatore", 80131 Naples, Italy
| | - Antonello Merlino
- CEINGE Biotecnologie Avanzate S.c.a r.l. "Franco Salvatore", 80131 Naples, Italy
| | - Maria Monti
- Department of Chemical Sciences, University of Naples "Federico II", 80126 Naples, Italy
- CEINGE Biotecnologie Avanzate S.c.a r.l. "Franco Salvatore", 80131 Naples, Italy
| | - Konrad Kowalski
- Faculty of Chemistry, Department of Organic Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Łukasz Szczupak
- Faculty of Chemistry, Department of Organic Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Daniela Marasco
- Department of Pharmacy, University of Naples "Federico II", 80131 Naples, Italy
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8
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Tito G, Troisi R, Ferraro G, Geri A, Massai L, Messori L, Sica F, Merlino A. Dirhodium tetraacetate binding to a B-DNA double helical dodecamer probed by X-ray crystallography and mass spectrometry. Dalton Trans 2023; 52:6992-6996. [PMID: 37199244 DOI: 10.1039/d3dt00320e] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The reaction of the cytotoxic compound dirhodium tetraacetate with a B-DNA double helical dodecamer was studied by X-ray crystallography and mass spectrometry. The structure of the dirhodium/DNA adduct reveals a dimetallic center binding to an adenine via axial coordination. Complementary information has been gained through ESI MS measurements. Comparison between the present data and those previously obtained for cisplatin indicates that the two metallodrugs react with this DNA dodecamer in a significantly different fashion.
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Affiliation(s)
- Gabriella Tito
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo via Cintia, I-80126 Napoli, Italy.
| | - Romualdo Troisi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo via Cintia, I-80126 Napoli, Italy.
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo via Cintia, I-80126 Napoli, Italy.
| | - Andrea Geri
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Lara Massai
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Luigi Messori
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Filomena Sica
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo via Cintia, I-80126 Napoli, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo via Cintia, I-80126 Napoli, Italy.
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9
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Ferraro G, Paolillo M, Sciortino G, Pisanu F, Garribba E, Merlino A. Implications of Protein Interaction in the Speciation of Potential V IVO-Pyridinone Drugs. Inorg Chem 2023; 62:8407-8417. [PMID: 37195003 DOI: 10.1021/acs.inorgchem.3c01041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Vanadium complexes (VCs) are promising agents for the treatment, among others, of diabetes and cancer. The development of vanadium-based drugs is mainly limited by a scarce knowledge of the active species in the target organs, which is often determined by the interaction of VCs with biological macromolecules like proteins. Here, we have studied the binding of [VIVO(empp)2] (where Hempp is 1-methyl-2-ethyl-3-hydroxy-4(1H)-pyridinone), an antidiabetic and anticancer VC, with the model protein hen egg white lysozyme (HEWL) by electrospray ionization-mass spectrometry (ESI-MS), electron paramagnetic resonance (EPR), and X-ray crystallography. ESI-MS and EPR techniques reveal that, in aqueous solution, both the species [VIVO(empp)2] and [VIVO(empp)(H2O)]+, derived from the first one upon the loss of a empp(-) ligand, interact with HEWL. Crystallographic data, collected under different experimental conditions, show covalent binding of [VIVO(empp)(H2O)]+ to the side chain of Asp48, and noncovalent binding of cis-[VIVO(empp)2(H2O)], [VIVO(empp)(H2O)]+, [VIVO(empp)(H2O)2]+, and of an unusual trinuclear oxidovanadium(V) complex, [VV3O6(empp)3(H2O)], with accessible sites on the protein surface. The possibility of covalent and noncovalent binding with different strength and of interaction with various sites favor the formation of adducts with the multiple binding of vanadium moieties, allowing the transport in blood and cellular fluids of more than one metal-containing species with a possible amplification of the biological effects.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Napoli, Italy
| | - Maddalena Paolillo
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Napoli, Italy
| | - Giuseppe Sciortino
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, 43007 Tarragona, Spain
| | - Federico Pisanu
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, I-07100 Sassari, Italy
| | - Eugenio Garribba
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, I-07100 Sassari, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Napoli, Italy
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10
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Loreto D, Maity B, Morita T, Nakamura H, Merlino A, Ueno T. Cross-Linked Crystals of Dirhodium Tetraacetate/RNase A Adduct Can Be Used as Heterogeneous Catalysts. Inorg Chem 2023; 62:7515-7524. [PMID: 37144589 DOI: 10.1021/acs.inorgchem.3c00852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Due to their unique coordination structure, dirhodium paddlewheel complexes are of interest in several research fields, like medicinal chemistry, catalysis, etc. Previously, these complexes were conjugated to proteins and peptides for developing artificial metalloenzymes as homogeneous catalysts. Fixation of dirhodium complexes into protein crystals is interesting to develop heterogeneous catalysts. Porous solvent channels present in protein crystals can benefit the activity by increasing the probability of substrate collisions at the catalytic Rh binding sites. Toward this goal, the present work describes the use of bovine pancreatic ribonuclease (RNase A) crystals with a pore size of 4 nm (P3221 space group) for fixing [Rh2(OAc)4] and developing a heterogeneous catalyst to perform reactions in an aqueous medium. The structure of the [Rh2(OAc)4]/RNase A adduct was investigated by X-ray crystallography: the metal complex structure remains unperturbed upon protein binding. Using a number of crystal structures, metal complex accumulation over time, within the RNase A crystals, and structures at variable temperatures were evaluated. We also report the large-scale preparation of microcrystals (∼10-20 μm) of the [Rh2(OAc)4]/RNase A adduct and cross-linking reaction with glutaraldehyde. The catalytic olefin cyclopropanation reaction and self-coupling of diazo compounds by these cross-linked [Rh2(OAc)4]/RNase A crystals were demonstrated. The results of this work reveal that these systems can be used as heterogeneous catalysts to promote reactions in aqueous solution. Overall, our findings demonstrate that the dirhodium paddlewheel complexes can be fixed in porous biomolecule crystals, like those of RNase A, to prepare biohybrid materials for catalytic applications.
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Affiliation(s)
- Domenico Loreto
- Department of Chemical Sciences, University of Naples Federico II, Napoli I-80126, Italy
| | - Basudev Maity
- School of Life Science and Technology, Tokyo Institute of Technology, 4259-B55 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
| | - Taiki Morita
- School of Life Science and Technology, Tokyo Institute of Technology, 4259-B55 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Hiroyuki Nakamura
- School of Life Science and Technology, Tokyo Institute of Technology, 4259-B55 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Napoli I-80126, Italy
| | - Takafumi Ueno
- School of Life Science and Technology, Tokyo Institute of Technology, 4259-B55 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan
- Living Systems Materialogy Research Group, International Research Frontiers Initiative, Tokyo Institute of Technology, Yokohama 226-8501, Japan
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11
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Merlino A. Metallodrug binding to serum albumin: Lessons from biophysical and structural studies. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Lucignano R, Stanzione I, Ferraro G, Di Girolamo R, Cané C, Di Somma A, Duilio A, Merlino A, Picone D. A new and efficient procedure to load bioactive molecules within the human heavy-chain ferritin nanocage. Front Mol Biosci 2023; 10:1008985. [PMID: 36714262 PMCID: PMC9880187 DOI: 10.3389/fmolb.2023.1008985] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 01/02/2023] [Indexed: 01/15/2023] Open
Abstract
For their easy and high-yield recombinant production, their high stability in a wide range of physico-chemical conditions and their characteristic hollow structure, ferritins (Fts) are considered useful scaffolds to encapsulate bioactive molecules. Notably, for the absence of immunogenicity and the selective interaction with tumor cells, the nanocages constituted by the heavy chain of the human variant of ferritin (hHFt) are optimal candidates for the delivery of anti-cancer drugs. hHFt nanocages can be disassembled and reassembled in vitro to allow the loading of cargo molecules, however the currently available protocols present some relevant drawbacks. Indeed, protein disassembly is achieved by exposure to extreme pH (either acidic or alkaline), followed by incubation at neutral pH to allow reassembly, but the final protein recovery and homogeneity are not satisfactory. Moreover, the exposure to extreme pH may affect the structure of the molecule to be loaded. In this paper, we report an alternative, efficient and reproducible procedure to reversibly disassemble hHFt under mild pH conditions. We demonstrate that a small amount of sodium dodecyl sulfate (SDS) is sufficient to disassemble the nanocage, which quantitatively reassembles upon SDS removal. Electron microscopy and X-ray crystallography show that the reassembled protein is identical to the untreated one. The newly developed procedure was used to encapsulate two small molecules. When compared to the existing disassembly/reassembly procedures, our approach can be applied in a wide range of pH values and temperatures, is compatible with a larger number of cargos and allows a higher protein recovery.
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13
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Liberti D, Imbimbo P, Giustino E, D’Elia L, Ferraro G, Casillo A, Illiano A, Pinto G, Di Meo MC, Alvarez-Rivera G, Corsaro MM, Amoresano A, Zarrelli A, Ibáñez E, Merlino A, Monti DM. Inside out Porphyridium cruentum: Beyond the Conventional Biorefinery Concept. ACS Sustain Chem Eng 2023; 11:381-389. [PMID: 36643001 PMCID: PMC9832536 DOI: 10.1021/acssuschemeng.2c05869] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/10/2022] [Indexed: 05/31/2023]
Abstract
Here, an unprecedented biorefinery approach has been designed to recover high-added value bioproducts starting from the culture ofPorphyridium cruentum. This unicellular marine red alga can secrete and accumulate high-value compounds that can find applications in a wide variety of industrial fields. 300 ± 67 mg/L of exopolysaccharides were obtained from cell culture medium; phycoerythrin was efficiently extracted (40% of total extract) and isolated by single chromatography, with a purity grade that allowed the crystal structure determination at 1.60 Å; a twofold increase in β-carotene yield was obtained from the residual biomass; the final residual biomass was found to be enriched in saturated fatty acids. Thus, for the first time, a complete exploitation ofP. cruentumculture was set up.
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Affiliation(s)
- Davide Liberti
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Paola Imbimbo
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Enrica Giustino
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Luigi D’Elia
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Giarita Ferraro
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Angela Casillo
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Anna Illiano
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Gabriella Pinto
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Maria Chiara Di Meo
- Department
of Sciences and Technologies (DST), University
of Sannio, Benevento82100, Italy
| | - Gerardo Alvarez-Rivera
- Laboratory
of Foodomics, Institute of Food Science
Research, CIAL, CSIC, Nicolás Cabrera 9, Madrid28049, Spain
| | - Maria Michela Corsaro
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Angela Amoresano
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Armando Zarrelli
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Elena Ibáñez
- Laboratory
of Foodomics, Institute of Food Science
Research, CIAL, CSIC, Nicolás Cabrera 9, Madrid28049, Spain
| | - Antonello Merlino
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
| | - Daria Maria Monti
- Department
of Chemical Sciences, University of Naples
Federico II, via Cinthia 4, Naples80126, Italy
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14
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Troisi R, Galardo F, Ferraro G, Sica F, Merlino A. Cisplatin Binding to Human Serum Transferrin: A Crystallographic Study. Inorg Chem 2023; 62:675-678. [PMID: 36602395 PMCID: PMC9846693 DOI: 10.1021/acs.inorgchem.2c04206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The molecular mechanism of how human serum transferrin (hTF) recognizes cisplatin at the atomic level is still unclear. Here, we report the molecular structure of the adduct formed upon the reaction of hTF with cisplatin. Pt binds the side chain of Met256 (at the N-lobe), without altering the protein overall conformation.
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Affiliation(s)
- Romualdo Troisi
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario di Monte Sant’Angelo, via Cintia, Naples I-80126, Italy
| | - Francesco Galardo
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario di Monte Sant’Angelo, via Cintia, Naples I-80126, Italy
| | - Giarita Ferraro
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario di Monte Sant’Angelo, via Cintia, Naples I-80126, Italy
| | - Filomena Sica
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario di Monte Sant’Angelo, via Cintia, Naples I-80126, Italy
| | - Antonello Merlino
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario di Monte Sant’Angelo, via Cintia, Naples I-80126, Italy,
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15
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Terán A, Ferraro G, Sánchez-Peláez AE, Herrero S, Merlino A. Effect of Equatorial Ligand Substitution on the Reactivity with Proteins of Paddlewheel Diruthenium Complexes: Structural Studies. Inorg Chem 2023; 62:670-674. [PMID: 36597851 PMCID: PMC9846696 DOI: 10.1021/acs.inorgchem.2c04103] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The paddlewheel [Ru2Cl(O2CCH3)4] complex was previously reported to react with the model protein hen egg white lysozyme (HEWL), forming adducts with two diruthenium moieties bound to Asp101 and Asp119 side chains upon the release of one acetate. To study the effect of the equatorial ligands on the reactivity with proteins of diruthenium compounds, X-ray structures of the adducts formed when HEWL reacts with [Ru2Cl(D-p-FPhF)(O2CCH3)3] [D-p-FPhF = N,N'-bis(4-fluorophenyl)formamidinate] under different conditions were solved. [Ru2Cl(D-p-FPhF)(O2CCH3)3] is bonded through their equatorial positions to the Asp side chains. Protein binding occurs cis or trans to D-p-FPhF. Lys or Arg side chains or even main-chain carbonyl groups can coordinate to the diruthenium core at the axial site. Data help to understand the reactivity of paddlewheel diruthenium complexes with proteins, providing useful information for the design of new artificial diruthenium-containing metalloenzymes with potential applications in the fields of catalysis, biomedicine, and biotechnology.
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Affiliation(s)
- Aarón Terán
- Departamento
de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - Giarita Ferraro
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario di Monte Sant’Angelo via Cinthia 21, Naples 80126, Italy
| | - Ana E. Sánchez-Peláez
- Departamento
de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - Santiago Herrero
- Departamento
de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Madrid E-28040, Spain,
| | - Antonello Merlino
- Department
of Chemical Sciences, University of Naples
Federico II, Complesso Universitario di Monte Sant’Angelo via Cinthia 21, Naples 80126, Italy,
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16
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Ferraro G, Paolillo M, Sciortino G, Garribba E, Merlino A. Multiple and Variable Binding of Pharmacologically Active Bis(maltolato)oxidovanadium(IV) to Lysozyme. Inorg Chem 2022; 61:16458-16467. [PMID: 36205235 PMCID: PMC9579999 DOI: 10.1021/acs.inorgchem.2c02690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The interaction with
proteins of metal-based drugs plays a crucial
role in their transport, mechanism, and activity. For an active MLn complex, where L is the organic carrier,
various binding modes (covalent and non-covalent, single or multiple)
may occur and several metal moieties (M, ML, ML2, etc.)
may interact with proteins. In this study, we have evaluated the interaction
of [VIVO(malt)2] (bis(maltolato)oxidovanadium(IV)
or BMOV, where malt = maltolato, i.e., the common name for 3-hydroxy-2-methyl-4H-pyran-4-onato) with the model protein hen egg white lysozyme
(HEWL) by electrospray ionization mass spectrometry, electron paramagnetic
resonance, and X-ray crystallography. The multiple binding of different
V-containing isomers and enantiomers to different sites of HEWL is
observed. The data indicate both non-covalent binding of cis-[VO(malt)2(H2O)] and [VO(malt)(H2O)3]+ and covalent binding of [VO(H2O)3–4]2+ and cis-[VO(malt)2] and other V-containing fragments to the side chains of Glu35,
Asp48, Asn65, Asp87, and Asp119 and to the C-terminal carboxylate.
Our results suggest that the multiple and variable interactions of
potential VIVOL2 drugs with proteins can help
to better understand their solution chemistry and contribute to define
the molecular basis of the mechanism of action of these intriguing
molecules. The interaction of [VIVO(malt)2] (BMOV,
malt = maltolato) with hen egg white lysozyme (HEWL) reveals the multiple
binding of different V-containing isomers and enantiomers to different
sites and non-covalent and covalent binding of cis-[VO(malt)2(H2O)], [VO(malt)(H2O)3]+, [VO(H2O)3−4]2+, and cis-[VO(malt)2] to Glu,
Asp, and Asn residues.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Napoli, Italy
| | - Maddalena Paolillo
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Napoli, Italy
| | - Giuseppe Sciortino
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, 43007 Tarragona, Spain
| | - Eugenio Garribba
- Dipartimento di Medicina, Chirurgia e Farmacia, Università di Sassari, Viale San Pietro, I-07100 Sassari, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Napoli, Italy
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17
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Loreto D, Fasulo F, Muñoz-García AB, Pavone M, Merlino A. Unexpected Imidazole Coordination to the Dirhodium Center in a Protein Environment: Insights from X-ray Crystallography and Quantum Chemistry. Inorg Chem 2022; 61:8402-8405. [PMID: 35609175 PMCID: PMC9175176 DOI: 10.1021/acs.inorgchem.2c01370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
X-ray diffraction
data demonstrate that the adduct formed upon
the reaction of dirhodium(II,II) tetraacetate with RNase A reacts
with imidazole, leading to the formation of an unexpected product
with the imidazole that binds the dirhodium center at an equatorial
site rather than an axial site. The origin of this result has been
dissected using quantum-chemical calculations. The dirhodium(II,II) tetraacetate/RNase A adduct reacts
with imidazole, leading to the formation of an unexpected product
with the imidazole that binds the dirhodium center at an equatorial
site rather than an axial site. The origin of this result has been
dissected using quantum-chemical calculations.
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Affiliation(s)
- Domenico Loreto
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Francesca Fasulo
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Ana B Muñoz-García
- Department of Physics "Ettore Pancini", University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
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18
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Monti DM, Loreto D, Iacobucci I, Ferraro G, Pratesi A, D’Elia L, Monti M, Merlino A. Protein-Based Delivery Systems for Anticancer Metallodrugs: Structure and Biological Activity of the Oxaliplatin/β-Lactoglobulin Adduct. Pharmaceuticals (Basel) 2022; 15:ph15040425. [PMID: 35455422 PMCID: PMC9033069 DOI: 10.3390/ph15040425] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 12/25/2022] Open
Abstract
β-lactoglobulin is the major component of whey. Here, the adduct formed upon the reaction of the protein with oxaliplatin (OXA) has been prepared, structurally characterized by X-ray crystallography and electrospray ionization–mass spectrometry, and evaluated as a cytotoxic agent. The data demonstrate that OXA rapidly binds β-lactoglobulin via coordination with a Met7 side chain upon release of the oxalate ligand. The adduct is significantly more cytotoxic than the free drug and induces apoptosis in cancer cells. Overall, our results suggest that metallodrug/β-lactoglobulin adducts can be used as anticancer agents and that the protein can be used as a metallodrug delivery system.
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Affiliation(s)
- Daria Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 21, 80126 Napoli, Italy; (D.M.M.); (D.L.); (I.I.); (G.F.); (L.D.); (M.M.)
| | - Domenico Loreto
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 21, 80126 Napoli, Italy; (D.M.M.); (D.L.); (I.I.); (G.F.); (L.D.); (M.M.)
| | - Ilaria Iacobucci
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 21, 80126 Napoli, Italy; (D.M.M.); (D.L.); (I.I.); (G.F.); (L.D.); (M.M.)
- CEINGE Advanced Biotechnologies s.c.a.r.l., Via G. Salvatore 486, 80145 Napoli, Italy
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 21, 80126 Napoli, Italy; (D.M.M.); (D.L.); (I.I.); (G.F.); (L.D.); (M.M.)
| | - Alessandro Pratesi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy;
| | - Luigi D’Elia
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 21, 80126 Napoli, Italy; (D.M.M.); (D.L.); (I.I.); (G.F.); (L.D.); (M.M.)
| | - Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 21, 80126 Napoli, Italy; (D.M.M.); (D.L.); (I.I.); (G.F.); (L.D.); (M.M.)
- CEINGE Advanced Biotechnologies s.c.a.r.l., Via G. Salvatore 486, 80145 Napoli, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia, 21, 80126 Napoli, Italy; (D.M.M.); (D.L.); (I.I.); (G.F.); (L.D.); (M.M.)
- Correspondence:
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19
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Ferraro G, Merlino A. Metallodrugs: Mechanisms of Action, Molecular Targets and Biological Activity. Int J Mol Sci 2022; 23:ijms23073504. [PMID: 35408863 PMCID: PMC8998277 DOI: 10.3390/ijms23073504] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 03/21/2022] [Indexed: 01/27/2023] Open
Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, I-80126 Naples, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, I-80126 Naples, Italy
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20
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Loreto D, Esposito A, Demitri N, Guaragna A, Merlino A. Reactivity of a fluorine-containing dirhodium tetracarboxylate compound with proteins. Dalton Trans 2022; 51:3695-3705. [PMID: 35166290 DOI: 10.1039/d2dt00082b] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Dirhodium complexes of general formula [Rh2(O2CR)4]L2 are a well-known class of bimetallic compounds that are used as efficient catalysts for a variety of reactions and have been shown to be potent antibacterial and anticancer agents. The catalytic and biological properties of these complexes largely depend on the nature of the bridging carboxylate ligands. Trifluoroacetate (tfa)-containing dirhodium compounds have been used to build artificial metalloenzymes upon reaction with peptides and have been shown to be more cytotoxic than dirhodium tetraacetate. However, there is no structural information on the interaction between these compounds and proteins. Here, cis-Rh2(μ-O2CCH3)2(μ-O2CCF3)2 ([cis-Rh2(OAc)2(tfa)2]) has been synthesized and its reaction with bovine pancreatic ribonuclease (RNase A) and hen egg white lysozyme (HEWL) was analyzed using a combination of different techniques, including Fluorine-19 nuclear magnetic resonance spectroscopy and macromolecular X-ray crystallography, with the aim to unveil the differences in the reactivity of tfa-containing dihrodium complexes with proteins when compared to [Rh2(OAc)4]. [cis-Rh2(OAc)2(tfa)2] and [Rh2(OAc)4] bind the N atoms of His side chains of RNase A at the axial position; however the fluorine-containing compound rapidly loses its tfa ligands, while [Rh2(OAc)4] can retain the acetate ligands upon protein binding. The reactivity of [cis-Rh2(OAc)2(tfa)2] with HEWL is slightly distinct when compared to that of [Rh2(OAc)4] under the same experimental conditions; however, both [cis-Rh2(OAc)2(tfa)2] and [Rh2(OAc)4] degrade when soaked within HEWL crystals. These results provide a structural-based guide for the design of new heterogenous chiral dirhodium/peptide and dirhodium/protein adducts with application in the fields of organic synthesis and asymmetric catalysis.
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Affiliation(s)
- Domenico Loreto
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126 Naples, Italy.
| | - Anna Esposito
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le V. Tecchio 80, 80125 Naples, Italy
| | - Nicola Demitri
- Elettra-Sincrotrone Trieste, S.S. 14 km 163.5 in Area Science Park, 34149 Trieste, Italy
| | - Annalisa Guaragna
- Department of Chemical, Materials and Production Engineering, University of Naples Federico II, P.le V. Tecchio 80, 80125 Naples, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126 Naples, Italy.
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21
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La Manna S, Leone M, Iacobucci I, Annuziata A, Di Natale C, Lagreca E, Malfitano AM, Ruffo F, Merlino A, Monti M, Marasco D. Glucosyl Platinum(II) Complexes Inhibit Aggregation of the C-Terminal Region of the Aβ Peptide. Inorg Chem 2022; 61:3540-3552. [PMID: 35171608 PMCID: PMC9951207 DOI: 10.1021/acs.inorgchem.1c03540] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Neurodegenerative diseases are often caused by uncontrolled amyloid aggregation. Hence, many drug discovery processes are oriented to evaluate new compounds that are able to modulate self-recognition mechanisms. Herein, two related glycoconjugate pentacoordinate Pt(II) complexes were analyzed in their capacity to affect the self-aggregation processes of two amyloidogenic fragments, Aβ21-40 and Aβ25-35, of the C-terminal region of the β-amyloid (Aβ) peptide, the major component of Alzheimer's disease (AD) neuronal plaques. The most water-soluble complex, 1Ptdep, is able to bind both fragments and to deeply influence the morphology of peptide aggregates. Thioflavin T (ThT) binding assays, electrospray ionization mass spectrometry (ESI-MS), and ultraviolet-visible (UV-vis) absorption spectroscopy indicated that 1Ptdep shows different kinetics and mechanisms of inhibition toward the two sequences and demonstrated that the peptide aggregation inhibition is associated with a direct coordinative bond of the compound metal center to the peptides. These data support the in vitro ability of pentacoordinate Pt(II) complexes to inhibit the formation of amyloid aggregates and pave the way for the application of this class of compounds as potential neurotherapeutics.
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Affiliation(s)
- Sara La Manna
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
| | - Marilisa Leone
- Institute
of Biostructures and Bioimaging - CNR, 80134 Naples, Italy
| | - Ilaria Iacobucci
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy,CEINGE
Biotecnologie Avanzate S.c.a r.l., “University
of Naples Federico II”, 80131 Naples, Italy
| | - Alfonso Annuziata
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy
| | - Concetta Di Natale
- Interdisciplinary
Research Centre on Biomaterials (CRIB), Department of Ingegneria Chimica
del Materiali e della Produzione Industriale (DICMAPI), University “Federico II”, 80125 Naples, Italy
| | - Elena Lagreca
- Interdisciplinary
Research Centre on Biomaterials (CRIB), Department of Ingegneria Chimica
del Materiali e della Produzione Industriale (DICMAPI), University “Federico II”, 80125 Naples, Italy
| | - Anna Maria Malfitano
- Department
of Translational Medical Science, University
of Naples “Federico II”, 80131 Naples, Italy
| | - Francesco Ruffo
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy
| | - Antonello Merlino
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy
| | - Maria Monti
- Department
of Chemical Sciences, University of Naples
“Federico II”, 80126 Naples, Italy,CEINGE
Biotecnologie Avanzate S.c.a r.l., “University
of Naples Federico II”, 80131 Naples, Italy,. Tel: +39-081-674474; +39-081-3737919
| | - Daniela Marasco
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy,Institute
of Biostructures and Bioimaging - CNR, 80134 Naples, Italy,. Tel: +39-081-2532043
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22
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Loreto D, Esposito A, Demitri N, Guaragna A, Merlino A. Digging into protein metalation differences triggered by fluorine containing-dirhodium tetracarboxylate analogues. Dalton Trans 2022; 51:7294-7304. [DOI: 10.1039/d2dt00873d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic and biological properties of dirhodium tetracarboxylates ([Rh2(μ-O2CR)4L2], L=axial ligand, R=CH3-, CH3CH2-, etc) largely depend on the nature of the bridging carboxylate equatorial μ-O2CR ligands, which can be easily exchanged...
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23
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Annunziata A, Ferraro G, Cucciolito ME, Imbimbo P, Tuzi A, Monti DM, Merlino A, Ruffo F. Halo complexes of gold( i) containing glycoconjugate carbene ligands: synthesis, characterization, cytotoxicity and interaction with proteins and DNA model systems. Dalton Trans 2022; 51:10475-10485. [DOI: 10.1039/d2dt00423b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New neutral Au(i) glycoconjugate carbene complexes show stability in aqueous solutions and interact with both DNA and protein model systems. Cytotoxicity studies demonstrate that the activity depends on the halide ancillary ligand.
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Affiliation(s)
- Alfonso Annunziata
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
- Consorzio Interuniversitario di Reattività Chimica e Catalisi (CIRCC), Via Celso Ulpiani 27, 70126, Bari, Italy
| | - Giarita Ferraro
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
| | - Maria Elena Cucciolito
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
- Consorzio Interuniversitario di Reattività Chimica e Catalisi (CIRCC), Via Celso Ulpiani 27, 70126, Bari, Italy
| | - Paola Imbimbo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
| | - Angela Tuzi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
| | - Daria Maria Monti
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
| | - Antonello Merlino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
| | - Francesco Ruffo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia 21, 80126, Napoli, Italy
- Consorzio Interuniversitario di Reattività Chimica e Catalisi (CIRCC), Via Celso Ulpiani 27, 70126, Bari, Italy
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24
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Ferraro G, Demitri N, Vitale L, Sciortino G, Sanna D, Ugone V, Garribba E, Merlino A. Spectroscopic/Computational Characterization and the X-ray Structure of the Adduct of the V IVO-Picolinato Complex with RNase A. Inorg Chem 2021; 60:19098-19109. [PMID: 34847328 PMCID: PMC8693189 DOI: 10.1021/acs.inorgchem.1c02912] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Indexed: 12/12/2022]
Abstract
The structure, stability, and enzymatic activity of the adduct formed upon the reaction of the V-picolinato (pic) complex [VIVO(pic)2(H2O)], with an octahedral geometry and the water ligand in cis to the V═O group, with the bovine pancreatic ribonuclease (RNase A) were studied. While electrospray ionization-mass spectrometry, circular dichroism, and ultraviolet-visible absorption spectroscopy substantiate the interaction between the metal moiety and RNase A, electron paramagnetic resonance (EPR) allows us to determine that a carboxylate group, stemming from Asp or Glu residues, and imidazole nitrogen from His residues are involved in the V binding at acidic and physiological pH, respectively. Crystallographic data demonstrate that the VIVO(pic)2 moiety coordinates the side chain of Glu111 of RNase A, by substituting the equatorial water molecule at acidic pH. Computational methods confirm that Glu111 is the most affine residue and interacts favorably with the OC-6-23-Δ enantiomer establishing an extended network of hydrogen bonds and van der Waals stabilizations. By increasing the pH around neutrality, with the deprotonation of histidine side chains, the binding of the V complex to His105 and His119 could occur, with that to His105 which should be preferred when compared to that to the catalytically important His119. The binding of the V compound affects the enzymatic activity of RNase A, but it does not alter its overall structure and stability.
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Affiliation(s)
- Giarita Ferraro
- Department
of Chemical Sciences, University of Naples
Federico II, I-80126 Napoli, Italy
| | - Nicola Demitri
- Elettra−Sincrotrone
Trieste, S.S. 14 km 163.5
in Area Science Park, 34149 Trieste, Italy
| | - Luigi Vitale
- Department
of Chemical Sciences, University of Naples
Federico II, I-80126 Napoli, Italy
| | - Giuseppe Sciortino
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute
of Science and Technology, 43007 Tarragona, Spain
| | - Daniele Sanna
- Istituto
di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Trav. La Crucca 3, I-07100 Sassari, Italy
| | - Valeria Ugone
- Istituto
di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, Trav. La Crucca 3, I-07100 Sassari, Italy
| | - Eugenio Garribba
- Dipartimento
di Scienze Mediche, Chirurgiche e Sperimentali, Università di Sassari, Viale San Pietro, I-07100 Sassari, Italy
| | - Antonello Merlino
- Department
of Chemical Sciences, University of Naples
Federico II, I-80126 Napoli, Italy
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25
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Gotte G, Campagnari R, Loreto D, Bettin I, Calzetti F, Menegazzi M, Merlino A. The crystal structure of the domain-swapped dimer of onconase highlights some catalytic and antitumor activity features of the enzyme. Int J Biol Macromol 2021; 191:560-571. [PMID: 34563576 DOI: 10.1016/j.ijbiomac.2021.09.095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/16/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
Onconase (ONC) is a monomeric amphibian "pancreatic-type" RNase endowed with remarkable anticancer activity. ONC spontaneously forms traces of a dimer (ONC-D) in solution, while larger amounts can be formed when ONC is lyophilized from mildly acidic solutions. Here, we report the crystal structure of ONC-D and analyze its catalytic and antitumor activities in comparison to ONC. ONC-D forms via the three-dimensional swapping of the N-terminal α-helix between two monomers, but it displays a significantly different quaternary structure from that previously modeled [Fagagnini A et al., 2017, Biochem J 474, 3767-81], and based on the crystal structure of the RNase A N-terminal swapped dimer. ONC-D presents a variable quaternary assembly deriving from a variable open interface, while it retains a catalytic activity that is similar to that of ONC. Notably, ONC-D displays antitumor activity against two human melanoma cell lines, although it exerts a slightly lower cytostatic effect than the monomer. The inhibition of melanoma cell proliferation by ONC or ONC-D is associated with the reduction of the expression of the anti-apoptotic B cell lymphoma 2 (Bcl2), as well as of the total expression and phosphorylation of the Signal Transducer and Activator of Transcription (STAT)-3. Phosphorylation is inhibited in both STAT3 Tyr705 and Ser727 key-residues, as well as in its upstream tyrosine-kinase Src. Consequently, both ONC species should exert their anti-cancer action by inhibiting the pro-tumor pleiotropic STAT3 effects deriving either by its phospho-tyrosine activation or by its non-canonical signaling pathways. Both ONC species, indeed, increase the portion of A375 cells undergoing apoptotic cell death. This study expands the variety of RNase domain-swapped dimeric structures, underlining the unpredictability of the open interface arrangement upon domain swapping. Structural data also offer valuable insights to analyze the differences in the measured ONC or ONC-D biological activities.
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Affiliation(s)
- Giovanni Gotte
- Department of Neuroscience, Biomedicine and Movement Sciences, Biological Chemistry Section, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy.
| | - Rachele Campagnari
- Department of Neuroscience, Biomedicine and Movement Sciences, Biological Chemistry Section, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Domenico Loreto
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 80126 Naples, Italy
| | - Ilaria Bettin
- Department of Neuroscience, Biomedicine and Movement Sciences, Biological Chemistry Section, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Federica Calzetti
- Department of Medicine, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Marta Menegazzi
- Department of Neuroscience, Biomedicine and Movement Sciences, Biological Chemistry Section, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 80126 Naples, Italy.
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26
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Marzo T, Ferraro G, Cucci LM, Pratesi A, Hansson Ö, Satriano C, Merlino A, La Mendola D. Oxaliplatin inhibits angiogenin proliferative and cell migration effects in prostate cancer cells. J Inorg Biochem 2021; 226:111657. [PMID: 34784565 DOI: 10.1016/j.jinorgbio.2021.111657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/08/2021] [Accepted: 10/31/2021] [Indexed: 01/11/2023]
Abstract
Angiogenin (Ang) is a potent angiogenic protein that is overexpressed in many types of cancer at concentration values correlated to the tumor aggressiveness. Here, by means of an integrated multi-technique approach based on crystallographic, spectrometric and spectroscopic analyses, we demonstrate that the anti-cancer drug oxaliplatin efficiently binds angiogenin. Microscopy cellular studies, carried out on the prostate cancer cell (PC-3) line , show that oxaliplatin inhibits the angiogenin prompting effect on cell proliferation and migration, which are typical features of angiogenesis process. Overall, our findings point to angiogenin as a possible target of oxaliplatin, thus suggesting a potential novel mechanism for the antineoplastic activity of this platinum drug and opening the avenue to novel approaches in the combined anti-cancer anti-angiogenic therapy.
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Affiliation(s)
- Tiziano Marzo
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy
| | - Giarita Ferraro
- Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Lorena Maria Cucci
- Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Alessandro Pratesi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Örjan Hansson
- Department of Chemistry and Chemical Biology, University of Gothenburg, Medicinaregatan 9C, PO Box 462, SE-40530 Göteborg, Sweden
| | - Cristina Satriano
- Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 21, I-80126 Napoli, Italy.
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy.
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27
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28
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Annunziata A, Liberti D, Bedini E, Cucciolito ME, Loreto D, Monti DM, Merlino A, Ruffo F. Square-Planar vs. Trigonal Bipyramidal Geometry in Pt(II) Complexes Containing Triazole-Based Glucose Ligands as Potential Anticancer Agents. Int J Mol Sci 2021; 22:ijms22168704. [PMID: 34445409 PMCID: PMC8395886 DOI: 10.3390/ijms22168704] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 12/13/2022] Open
Abstract
This article describes the synthesis, characterization, and biological activity of novel square-planar cationic platinum(II) complexes containing glucoconjugated triazole ligands and a comparison with the results obtained from the corresponding five-coordinate complexes bearing the same triazole ligands. Stability in solution, reactivity with DNA and small molecules of the new compounds were evaluated by NMR, fluorescence, and UV–vis absorption spectroscopy, together with their cytotoxic action against pairs of immortalized and tumorigenic cell lines. The results show that the square-planar species exhibit greater stability than the corresponding five-coordinate ones. Furthermore, although the square-planar complexes are less cytotoxic than the latter ones, they exhibit a certain selectivity. These results simultaneously demonstrate that overall stability is a fundamental prerequisite for preserving the performance of the agents and that coordinative saturation constitutes a point in favor of their biological action.
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29
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Ferraro G, Loreto D, Merlino A. Interaction of Platinum-based Drugs with Proteins: An Overview of Representative Crystallographic Studies. Curr Top Med Chem 2021; 21:6-27. [PMID: 32579504 DOI: 10.2174/1568026620666200624162213] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 05/11/2020] [Accepted: 05/13/2020] [Indexed: 12/27/2022]
Abstract
Pt-based drugs are widely used in clinics for the treatment of cancer. The mechanism of action of these molecules relies on their interaction with DNA. However, the recognition of these metal compounds by proteins plays an important role in defining pharmacokinetics, side effects and their overall pharmacological profiles. Single crystal X-ray diffraction studies provided important information on the molecular mechanisms at the basis of this process. Here, the molecular structures of representative adducts obtained upon reaction with proteins of selected Pt-based drugs, including cisplatin, carboplatin and oxaliplatin, are briefly described and comparatively examined. Data indicate that metal ligands play a significant role in driving the reaction of Pt compounds with proteins; non-covalent interactions that occur in the early steps of Pt compound/protein recognition process play a crucial role in defining the structure of the final Pt-protein adduct. In the metallated protein structures, Pt centers coordinate few protein side chains, such as His, Met, Cys, Asp, Glu and Lys residues upon releasing labile ligands.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemistry Ugo Schiff, University of Florence, Sesto Fiorentino, Firenze, Italy
| | - Domenico Loreto
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
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30
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Sica F, Russo Krauss I, Troisi R, Bosso A, Culurciello R, Carluccio C, Trapani M, Merlino A, Mazzarella L, Pizzo E. The structural features of an ancient ribonuclease from Salmo salar reveal an intriguing case of auto-inhibition. Int J Biol Macromol 2021; 182:659-668. [PMID: 33848550 DOI: 10.1016/j.ijbiomac.2021.04.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/07/2021] [Accepted: 04/07/2021] [Indexed: 10/21/2022]
Abstract
The superfamily of vertebrate ribonucleases, a large group of evolutionarily related proteins, continues to provide interesting structural and functional information. In particular, the crystal structure of SS-RNase-2 from Salmo salar (SS2), here presented, has revealed a novel auto-inhibition mechanism that enriches the number of inhibition strategies observed in some members of the family. Within an essentially unmodified RNase folding, the SS2 active site cleft is in part obstructed by the collapse of an extra pentapeptide inserted in the C-terminal region. This unexpected intrusion alters the organization of the catalytic triad by pushing one catalytic histidine off the pocket. Possible mechanisms to remove the active site obstruction have also been studied through the production of two mutants that provide useful information on the functionality of this intriguing version of the ribonuclease superfamily.
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Affiliation(s)
- Filomena Sica
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy.
| | - Irene Russo Krauss
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy; CSGI (Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase), Via della Lastruccia 3, I-50019 Sesto Fiorentino, FI, Italy
| | - Romualdo Troisi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy
| | - Andrea Bosso
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy
| | - Rosanna Culurciello
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy
| | - Carla Carluccio
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy
| | - Mariateresa Trapani
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy
| | - Lelio Mazzarella
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy; Accademia di Scienze Fisiche e Matematiche della Società Nazionale di Scienze, Lettere ed Arti in Napoli, Naples, Italy
| | - Elio Pizzo
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126 Naples, Italy
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31
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Abstract
Recent advances in structural studies unveiling the basis of the metal compounds/protein recognition process are discussed.
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Affiliation(s)
- Antonello Merlino
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant’Angelo
- Napoli
- Italy
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32
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Ferraro G, Cirri D, Marzo T, Pratesi A, Messori L, Merlino A. The first step of arsenoplatin-1 aggregation in solution unveiled by solving the crystal structure of its protein adduct. Dalton Trans 2020; 50:68-71. [PMID: 33320144 DOI: 10.1039/d0dt04068a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Arsenoplatin-1 (AP-1) is an innovative dual-action anticancer agent that contains a platinum(ii) center coordinated to an arsenous acid moiety. We found that AP-1 spontaneously aggregates in aqueous solutions generating oligomeric species of increasing length. Afterward, we succeeded in solving the crystal structure of the adduct formed between the model protein lysozyme and an early AP-1 oligomer that turned out to be a trimer. Remarkably, this crystal structure traps an early stage of AP-1 aggregation offering detailed insight into the molecular process of the oligomer's growth.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy.
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33
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Loreto D, Ferraro G, Merlino A. Protein-metallodrugs interactions: Effects on the overall protein structure and characterization of Au, Ru and Pt binding sites. Int J Biol Macromol 2020; 163:970-976. [DOI: 10.1016/j.ijbiomac.2020.07.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/22/2020] [Accepted: 07/06/2020] [Indexed: 12/19/2022]
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34
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Abstract
The interactions between the cytotoxic paddlewheel dirhodium complex [Rh2(μ-O2CCH3)4] and the model protein bovine pancreatic ribonuclease (RNase A) were investigated by high-resolution mass spectrometry and X-ray crystallography. The results indicate that [Rh2(μ-O2CCH3)4] extensively reacts with RNase A. The metal compound binds the protein via coordination of the imidazole ring of a His side chain to one of its axial sites, while the dirhodium center and the acetato ligands remain unmodified. Data provide valuable information for the design of artificial dirhodium-containing metalloenzymes.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia, 3-13, 50019, Sesto Fiorentino, Florence, Italy.
| | - Alessandro Pratesi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via Giuseppe Moruzzi 13, 56124, Pisa, Italy
| | - Luigi Messori
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia, 3-13, 50019, Sesto Fiorentino, Florence, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia, 21, 80126, Naples, Italy.
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35
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Di Somma A, Avitabile C, Cirillo A, Moretta A, Merlino A, Paduano L, Duilio A, Romanelli A. The antimicrobial peptide Temporin L impairs E. coli cell division by interacting with FtsZ and the divisome complex. Biochim Biophys Acta Gen Subj 2020; 1864:129606. [PMID: 32229224 DOI: 10.1016/j.bbagen.2020.129606] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/25/2020] [Accepted: 03/23/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND The comprehension of the mechanism of action of antimicrobial peptides is fundamental for the design of new antibiotics. Studies performed looking at the interaction of peptides with bacterial cells offer a faithful picture of what really happens in nature. METHODS In this work we focused on the interaction of the peptide Temporin L with E. coli cells, using a variety of biochemical and biophysical techniques that include: functional proteomics, docking, optical microscopy, TEM, DLS, SANS, fluorescence. RESULTS We identified bacterial proteins specifically interacting with the peptides that belong to the divisome machinery; our data suggest that the GTPase FtsZ is the specific peptide target. Docking experiments supported the FtsZ-TL interaction; binding and enzymatic assays using recombinant FtsZ confirmed this hypothesis and revealed a competitive inhibition mechanism. Optical microscopy and TEM measurements demonstrated that, upon incubation with the peptide, bacterial cells are unable to divide forming long necklace-like cell filaments. Dynamic light scattering studies and Small Angle Neutron Scattering experiments performed on treated and untreated bacterial cells, indicated a change at the nanoscale level of the bacterial membrane. CONCLUSIONS The peptide temporin L acts by a non-membrane-lytic mechanism of action, inhibiting the divisome machinery. GENERAL SIGNIFICANCE Identification of targets of antimicrobial peptides is pivotal to the tailored design of new antimicrobials.
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Affiliation(s)
- Angela Di Somma
- Department of Chemical Sciences, University of Naples "Federico II" Via Cinthia 4, 80126 Napoli, Italy; National Institute of Biostructures and Biosystems (INBB), Viale Medaglie d'Oro 305, 00136 Roma, Italy
| | - Concetta Avitabile
- Institute of Biostructures and Bioimaging (CNR), via Mezzocannone 16, 80134 Napoli, Italy
| | - Arianna Cirillo
- Department of Chemical Sciences, University of Naples "Federico II" Via Cinthia 4, 80126 Napoli, Italy
| | - Antonio Moretta
- Department of Sciences, University of Basilicata, Potenza, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples "Federico II" Via Cinthia 4, 80126 Napoli, Italy
| | - Luigi Paduano
- Department of Chemical Sciences, University of Naples "Federico II" Via Cinthia 4, 80126 Napoli, Italy
| | - Angela Duilio
- Department of Chemical Sciences, University of Naples "Federico II" Via Cinthia 4, 80126 Napoli, Italy.
| | - Alessandra Romanelli
- Department of Pharmaceutical Sciences, University of Milan, Via Venezian 21, 20133 Milan, Italy.
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Annunziata A, Amoresano A, Cucciolito ME, Esposito R, Ferraro G, Iacobucci I, Imbimbo P, Lucignano R, Melchiorre M, Monti M, Scognamiglio C, Tuzi A, Monti DM, Merlino A, Ruffo F. Pt(II) versus Pt(IV) in Carbene Glycoconjugate Antitumor Agents: Minimal Structural Variations and Great Performance Changes. Inorg Chem 2020; 59:4002-4014. [PMID: 32129608 PMCID: PMC7997382 DOI: 10.1021/acs.inorgchem.9b03683] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Indexed: 12/20/2022]
Abstract
Octahedral Pt(IV) complexes (2Pt-R) containing a glycoconjugate carbene ligand were prepared and fully characterized. These complexes are structural analogues to the trigonal bipyramidal Pt(II) species (1Pt-R) recently described. Thus, an unprecedented direct comparison between the biological properties of Pt compounds with different oxidation states and almost indistinguishable structural features was performed. The stability profile of the novel Pt(IV) compounds in reference solvents was determined and compared to that of the analogous Pt(II) complexes. The uptake and antiproliferative activities of 2Pt-R and 1Pt-R were evaluated on the same panel of cell lines. DNA and protein binding properties were assessed using human serum albumin, the model protein hen egg white lysozyme, and double stranded DNA model systems by a variety of experimental techniques, including UV-vis absorption spectroscopy, fluorescence, circular dichroism, and electrospray ionization mass spectrometry. Although the compounds present similar structures, their in-solution stability, cellular uptake, and DNA binding properties are diverse. These differences may represent the basis of their different cytotoxicity and biological activity.
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Affiliation(s)
- Alfonso Annunziata
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Angela Amoresano
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Maria Elena Cucciolito
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
| | - Roberto Esposito
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
| | - Giarita Ferraro
- Dipartimento di Chimica Ugo Schiff, Università di Firenze, Sesto Fiorentino, Florence 50019, Italy
| | - Ilaria Iacobucci
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Paola Imbimbo
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Rosanna Lucignano
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | | | - Maria Monti
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Chiara Scognamiglio
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Angela Tuzi
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Daria Maria Monti
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Antonello Merlino
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Francesco Ruffo
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
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Ferraro G, Imbimbo P, Marseglia A, Illiano A, Fontanarosa C, Amoresano A, Olivieri G, Pollio A, Monti DM, Merlino A. A thermophilic C-phycocyanin with unprecedented biophysical and biochemical properties. Int J Biol Macromol 2020; 150:38-51. [PMID: 32035961 DOI: 10.1016/j.ijbiomac.2020.02.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/24/2020] [Accepted: 02/06/2020] [Indexed: 10/25/2022]
Abstract
C-phycoyanins are abundant light-harvesting pigments which have an important role in the energy transfer cascade of photosystems in prokaryotic cyanobacteria and eukaryotic red algae. These proteins have important biotechnological applications, since they can be used in food, cosmetics, nutraceutical, pharmaceutical industries and in biomedical research. Here, C-phycocyanin from the extremophilic red alga Galdieria phlegrea (GpPC) has been purified and characterized from a biophysical point of view by SDS-PAGE, mass spectrometry, UV-Vis absorption spectroscopy, circular dichroism and intrinsic fluorescence. Stability against pH variations, addition of the oxidizing agent hydrogen peroxide and the effects of temperature have been also investigated, together with its in cell antioxidant potential and antitumor activity. GpPC is stable under different pHs and unfolds at a temperature higher than 80 °C within the pH range 5.0-7.0. Its fluorescence spectra present a maximum at 650 nm, when excited at 589 nm. The protein exerts interesting in cell antioxidant properties even after high temperature treatments, like the pasteurization process, and is cytotoxic for A431 and SVT2 cancer cells, whereas it is not toxic for non-malignant cells. Our results assist in the development of C-phycocyanin as a multitasking protein, to be used in the food industry, as antioxidant and anticancer agent.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Paola Imbimbo
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Angela Marseglia
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Anna Illiano
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Carolina Fontanarosa
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Angela Amoresano
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
| | - Giuseppe Olivieri
- Bioprocess Engineering Group, Wageningen University and Research, Droevendaalsesteeg 1, 6700AA Wageningen, the Netherlands
| | - Antonino Pollio
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Daria Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy; Istituto Nazionale di Biostrutture e Biosistemi (INBB), Rome, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy.
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Pinto G, D'Acierno M, Illiano A, Petruk G, Ferraro G, Merlino A, Monti DM, Godovac-Zimmermann J, Amoresano A. Label-free quantitative proteomics of the MCF-7 cellular response to a ferritin–metallodrug complex. Mol Omics 2020; 16:165-173. [DOI: 10.1039/c9mo00158a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Schematic summary of the experimental workflow based on label-free quantitative proteomics.
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Affiliation(s)
- Gabriella Pinto
- Department of Chemical Sciences
- University of Naples Federico II
- Napoli
- Italy
| | | | - Anna Illiano
- Department of Chemical Sciences
- University of Naples Federico II
- Napoli
- Italy
| | - Ganna Petruk
- Department of Chemical Sciences
- University of Naples Federico II
- Napoli
- Italy
| | - Giarita Ferraro
- Department of Chemical Sciences
- University of Naples Federico II
- Napoli
- Italy
- Department of Chemistry Ugo Schiff
| | - Antonello Merlino
- Department of Chemical Sciences
- University of Naples Federico II
- Napoli
- Italy
| | - Daria Maria Monti
- Department of Chemical Sciences
- University of Naples Federico II
- Napoli
- Italy
| | | | - Angela Amoresano
- Department of Chemical Sciences
- University of Naples Federico II
- Napoli
- Italy
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Abstract
The first structural study on the interaction of β-lactoglobulin with the anticancer compound cisplatin is here reported by combining spectroscopic, crystallographic and mass spectrometry techniques.
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Affiliation(s)
- Nicole Balasco
- Institute of Biostructures and Bioimaging
- CNR
- 80134 Napoli
- Italy
| | - Giarita Ferraro
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
| | - Domenico Loreto
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
| | - Ilaria Iacobucci
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
| | - Maria Monti
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
| | - Antonello Merlino
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
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Balasco N, Vitagliano L, Merlino A, Verde C, Mazzarella L, Vergara A. The unique structural features of carbonmonoxy hemoglobin from the sub-Antarctic fish Eleginops maclovinus. Sci Rep 2019; 9:18987. [PMID: 31831781 PMCID: PMC6908587 DOI: 10.1038/s41598-019-55331-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 11/11/2019] [Indexed: 01/14/2023] Open
Abstract
Tetrameric hemoglobins (Hbs) are prototypical systems for the investigations of fundamental properties of proteins. Although the structure of these proteins has been known for nearly sixty years, there are many aspects related to their function/structure that are still obscure. Here, we report the crystal structure of a carbonmonoxy form of the Hb isolated from the sub-Antarctic notothenioid fish Eleginops maclovinus characterised by either rare or unique features. In particular, the distal site of the α chain results to be very unusual since the distal His is displaced from its canonical position. This displacement is coupled with a shortening of the highly conserved E helix and the formation of novel interactions at tertiary structure level. Interestingly, the quaternary structure is closer to the T-deoxy state of Hbs than to the R-state despite the full coordination of all chains. Notably, these peculiar structural features provide a rationale for some spectroscopic properties exhibited by the protein in solution. Finally, this unexpected structural plasticity of the heme distal side has been associated with specific sequence signatures of various Hbs.
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Affiliation(s)
- Nicole Balasco
- Institute of Biostructures and Bioimaging, CNR, Via Mezzocannone 16, Naples, Italy
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging, CNR, Via Mezzocannone 16, Naples, Italy.
| | - Antonello Merlino
- Dept. Chemical Sciences, University of Napoli "Federico II", Via Cinthia, 80126, Naples, Italy
| | - Cinzia Verde
- Institute of Biosciences and BioResources, CNR, Via Pietro Castellino 111, 80131, Naples, Italy
| | - Lelio Mazzarella
- Dept. Chemical Sciences, University of Napoli "Federico II", Via Cinthia, 80126, Naples, Italy
| | - Alessandro Vergara
- Dept. Chemical Sciences, University of Napoli "Federico II", Via Cinthia, 80126, Naples, Italy.
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Florio D, Iacobucci I, Ferraro G, Mansour AM, Morelli G, Monti M, Merlino A, Marasco D. Role of the Metal Center in the Modulation of the Aggregation Process of Amyloid Model Systems by Square Planar Complexes Bearing 2-(2'-pyridyl)benzimidazole Ligands. Pharmaceuticals (Basel) 2019; 12:ph12040154. [PMID: 31614832 PMCID: PMC6958441 DOI: 10.3390/ph12040154] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/09/2019] [Accepted: 10/10/2019] [Indexed: 11/16/2022] Open
Abstract
The effect of analogue Pd(II)-, Pt(II)-, and Au(III) compounds featuring 2-(2'-pyridyl)benzimidazole on the aggregation propensity of amyloid-like peptides derived from Aβ and from the C-terminal domain of nucleophosmin 1 was investigated. Kinetic profiles of aggregation were evaluated using thioflavin binding assays, whereas the interactions of the compounds with the peptides were studied by UV-Vis absorption spectroscopy and electrospray ionization mass spectrometry. The results indicate that the compounds modulate the aggregation of the investigated peptides using different mechanisms, suggesting that the reactivity of the metal center and the physicochemical properties of the metals (rather than those of the ligands and the geometry of the metal compounds) play a crucial role in determining the anti-aggregation properties.
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Affiliation(s)
- Daniele Florio
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
| | - Ilaria Iacobucci
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
- CEINGE Biotecnologie Avanzate S.c.a r.l., University of Naples Federico II, Napoli 80145, Italy.
| | - Giarita Ferraro
- Department of Chemistry Ugo Schiff, University of Florence, Sesto Fiorentino (FI) 50019, Italy.
| | - Ahmed M Mansour
- Department of Chemistry, Faculty of Science, University of Cairo, Gamma street, Giza, 12613, Egypt.
| | - Giancarlo Morelli
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
| | - Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
- CEINGE Biotecnologie Avanzate S.c.a r.l., University of Naples Federico II, Napoli 80145, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
| | - Daniela Marasco
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
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Annunziata A, Cucciolito ME, Esposito R, Ferraro G, Monti DM, Merlino A, Ruffo F. Five‐Coordinate Platinum(II) Compounds as Potential Anticancer Agents. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900771] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Alfonso Annunziata
- Dipartimento di Scienze Chimiche Complesso Universitario di Monte S. Angelo Università degli Studi di Napoli Federico II via Cintia 21 – 80126 Napoli Italy
| | - Maria Elena Cucciolito
- Dipartimento di Scienze Chimiche Complesso Universitario di Monte S. Angelo Università degli Studi di Napoli Federico II via Cintia 21 – 80126 Napoli Italy
- Complesso Universitario di Monte S. Angelo CIRCC Via Celso Ulpiani 27 – 70126 Bari Italy
| | - Roberto Esposito
- Dipartimento di Scienze Chimiche Complesso Universitario di Monte S. Angelo Università degli Studi di Napoli Federico II via Cintia 21 – 80126 Napoli Italy
- Complesso Universitario di Monte S. Angelo CIRCC Via Celso Ulpiani 27 – 70126 Bari Italy
| | - Giarita Ferraro
- Dipartimento di Chimica “Ugo Schiff” Complesso Universitario di Monte S. Angelo Università degli Studi di Firenze Via della Lastruccia, 3‐13 – 50019 Sesto Fiorentino (FI) Italy
| | - Daria Maria Monti
- Dipartimento di Scienze Chimiche Complesso Universitario di Monte S. Angelo Università degli Studi di Napoli Federico II via Cintia 21 – 80126 Napoli Italy
| | - Antonello Merlino
- Dipartimento di Scienze Chimiche Complesso Universitario di Monte S. Angelo Università degli Studi di Napoli Federico II via Cintia 21 – 80126 Napoli Italy
| | - Francesco Ruffo
- Dipartimento di Scienze Chimiche Complesso Universitario di Monte S. Angelo Università degli Studi di Napoli Federico II via Cintia 21 – 80126 Napoli Italy
- Complesso Universitario di Monte S. Angelo CIRCC Via Celso Ulpiani 27 – 70126 Bari Italy
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Pratesi A, Cirri D, Fregona D, Ferraro G, Giorgio A, Merlino A, Messori L. Structural Characterization of a Gold/Serum Albumin Complex. Inorg Chem 2019; 58:10616-10619. [DOI: 10.1021/acs.inorgchem.9b01900] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Alessandro Pratesi
- Laboratory of Metals in Medicine (MetMed), Department of Chemistry “U. Schiff”, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Damiano Cirri
- Laboratory of Metals in Medicine (MetMed), Department of Chemistry “U. Schiff”, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Dolores Fregona
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, via Cinthia, 80126 Napoli, Italy
| | - Anna Giorgio
- Department of Chemical Sciences, University of Naples Federico II, via Cinthia, 80126 Napoli, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, via Cinthia, 80126 Napoli, Italy
| | - Luigi Messori
- Laboratory of Metals in Medicine (MetMed), Department of Chemistry “U. Schiff”, University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
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Monti DM, Ferraro G, Merlino A. Ferritin-based anticancer metallodrug delivery: Crystallographic, analytical and cytotoxicity studies. Nanomedicine 2019; 20:101997. [PMID: 31028889 DOI: 10.1016/j.nano.2019.04.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/28/2019] [Accepted: 04/03/2019] [Indexed: 12/27/2022]
Abstract
The encapsulation of anticancer metal-based drugs within a protein nanocage represents a valuable strategy to improve the efficacy and selectivity of these compounds towards cancer cells. The preparation, characterization of the in vitro cytotoxicity and X-ray structures of several ferritin-metallodrug nanocomposites (mainly containing platinum-, ruthenium- and gold-based anticancer agents) are here reviewed. The molecular mechanisms of action of these Ft-metallodrug adducts are discussed and future directions in the field are outlined.
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Affiliation(s)
- Dara Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy.
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Miodragović Đ, Merlino A, Swindell EP, Bogachkov A, Ahn RW, Abuhadba S, Ferraro G, Marzo T, Mazar AP, Messori L, O’Halloran TV. Arsenoplatin-1 Is a Dual Pharmacophore Anticancer Agent. J Am Chem Soc 2019; 141:6453-6457. [PMID: 30943017 PMCID: PMC6830503 DOI: 10.1021/jacs.8b13681] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Arsenoplatins are adducts of two chemically important anticancer drugs, cisplatin and arsenic trioxide, that have a Pt(II) bond to an As(III) hydroxide center. Screens of the NCI-60 human tumor cell lines reveal that arsenoplatin-1 (AP-1), [Pt(μ-NHC(CH3)O)2ClAs(OH)2], the first representative of this novel class of anticancer agents, displays a superior activity profile relative to the parent drugs As2O3 or cisplatin in a majority of cancer cell lines tested. These activity profiles are important because the success of arsenic trioxide in blood cancers (such as APL) has not been seen in solid tumors due to the rapid clearance of arsenous acid from the body. To understand the biological chemistry of these compounds, we evaluated interactions of AP-1 with the two important classes of biomolecules-proteins and DNA. The first structural studies of AP-1 bound to model proteins reveal that platinum(II) binds the Nε of His in a manner that preserves the Pt-As bond. We find that AP-1 readily enters cells and binds to DNA with an intact Pt-As bond (Pt:As ratio of 1). At longer incubation times, however, the Pt:As ratio in DNA samples increases, suggesting that the Pt-As bond breaks and releases the As(OH)2 moiety. We conclude that arsenoplatin-1 has the potential to deliver both Pt and As species to a variety of hematological and solid cancers.
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Affiliation(s)
- Đenana Miodragović
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois
60208, United States
- Northeastern Illinois University, 5500 North St Louis Avenue, Chicago, Illinois 60625, United
States
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte
Sant’Angelo, Via Cintia, I-80126 Napoli, Italy
| | - Elden P. Swindell
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois
60208, United States
| | - Abraham Bogachkov
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois
60208, United States
| | - Richard W. Ahn
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois
60208, United States
| | - Sara Abuhadba
- Northeastern Illinois University, 5500 North St Louis Avenue, Chicago, Illinois 60625, United
States
| | - Giarita Ferraro
- Department of Chemistry “Ugo Schiff”, Università degli Studi Firenze, via della
Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Tiziano Marzo
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy
| | - Andrew P. Mazar
- Pharmacology, Feinberg School of Medicine, Northwestern University, 2145 Sheridan Road, Evanston,
Illinois 60208, United States
| | - Luigi Messori
- Department of Chemistry “Ugo Schiff”, Università degli Studi Firenze, via della
Lastruccia 3-13, 50019 Sesto Fiorentino, Italy
| | - Thomas V. O’Halloran
- Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois
60208, United States
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Florio D, Malfitano AM, Di Somma S, Mügge C, Weigand W, Ferraro G, Iacobucci I, Monti M, Morelli G, Merlino A, Marasco D. Platinum(II) O, S Complexes Inhibit the Aggregation of Amyloid Model Systems. Int J Mol Sci 2019; 20:ijms20040829. [PMID: 30769904 PMCID: PMC6413125 DOI: 10.3390/ijms20040829] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 02/08/2019] [Accepted: 02/13/2019] [Indexed: 02/07/2023] Open
Abstract
Platinum(II) complexes with different cinnamic acid derivatives as ligands were investigated for their ability to inhibit the aggregation process of amyloid systems derived from Aβ, Yeast Prion Protein Sup35p and the C-terminal domain of nucleophosmin 1. Thioflavin T binding assays and circular dichroism data indicate that these compounds strongly inhibit the aggregation of investigated peptides exhibiting IC50 values in the micromolar range. MS analysis confirms the formation of adducts between peptides and Pt(II) complexes that are also able to reduce amyloid cytotoxicity in human SH-SY5Y neuroblastoma cells. Overall data suggests that bidentate ligands based on β-hydroxy dithiocinnamic esters can be used to develop platinum or platinoid compounds with anti-amyloid aggregation properties.
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Affiliation(s)
- Daniele Florio
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
| | - Anna Maria Malfitano
- Department of Translational Medical Science, University of Naples Federico II, Napoli 80131, Italy.
| | - Sarah Di Somma
- Department of Translational Medical Science, University of Naples Federico II, Napoli 80131, Italy.
| | - Carolin Mügge
- Institute for Inorganic and Analytical Chemistry, University of Jena, Jena 07743, Germany.
- Department of Biology, Ruhr-University Bochum, Bochum 44801, Germany.
| | - Wolfgang Weigand
- Institute for Inorganic and Analytical Chemistry, University of Jena, Jena 07743, Germany.
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
| | - Ilaria Iacobucci
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
- CEINGE Biotecnologie Avanzate s.c.a r.l., University of Naples Federico II, Napoli 80145, Italy.
| | - Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
- CEINGE Biotecnologie Avanzate s.c.a r.l., University of Naples Federico II, Napoli 80145, Italy.
| | - Giancarlo Morelli
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Napoli 80126, Italy.
| | - Daniela Marasco
- Department of Pharmacy, University of Naples Federico II, Napoli 80134, Italy.
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48
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Petruk G, Monti DM, Ferraro G, Pica A, D'Elia L, Pane F, Amoresano A, Furrer J, Kowalski K, Merlino A. Encapsulation of the Dinuclear Trithiolato-Bridged Arene Ruthenium Complex Diruthenium-1 in an Apoferritin Nanocage: Structure and Cytotoxicity. ChemMedChem 2019; 14:594-602. [PMID: 30674089 DOI: 10.1002/cmdc.201800805] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/21/2019] [Indexed: 12/14/2022]
Abstract
The effects of encapsulating the cytotoxic dinuclear trithiolato-bridged arene ruthenium complex [(η6 -p-MeC6 H4 iPr)2 Ru2 (μ2 -S-p-C6 H4 tBu)3 ]Cl (DiRu-1) within the apoferritin (AFt) nanocage were investigated. The DiRu-1-AFt nanocarrier was characterized by UV/Vis spectroscopy, ICP-MS, CD and X-ray crystallography. In contrast to previously reported Au- and Pt-based drug-loaded AFt carriers, we found no evidence of direct interactions between DiRu-1 and AFt. DiRu-1-AFt is cytotoxic toward immortalized murine BALB/c-3T3 fibroblasts transformed with SV40 virus (SVT2) and human epidermoid carcinoma A431 malignant cells, and exhibits moderate selectivity for these cancer cells over normal BALB/c-3T3 cells. DiRu-1-AFt triggers the production of reactive oxygen species, depolarization of mitochondrial membrane potential, and induces cell death via p53-mediated apoptosis. Comparison between our data and previous results suggests that the presence of specific interactions between a metal-based drug and AFt within the protein cage is not essential for drug encapsulation.
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Affiliation(s)
- Ganna Petruk
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126, Naples, Italy
| | - Daria Maria Monti
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126, Naples, Italy
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126, Naples, Italy
| | - Andrea Pica
- EMBL, CS 90181, 71 AV des Martyrs, 38009, Grenoble (38), France
| | - Luigi D'Elia
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126, Naples, Italy
| | - Francesca Pane
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126, Naples, Italy
| | - Angela Amoresano
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126, Naples, Italy
| | - Julien Furrer
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - Konrad Kowalski
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403, Poland
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, via Cinthia 21, 80126, Naples, Italy
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49
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Caterino M, Herrmann M, Merlino A, Riccardi C, Montesarchio D, Mroginski MA, Musumeci D, Ruffo F, Paduano L, Hildebrandt P, Kozuch J, Vergara A. On the pH-Modulated Ru-Based Prodrug Activation Mechanism. Inorg Chem 2019; 58:1216-1223. [PMID: 30614697 DOI: 10.1021/acs.inorgchem.8b02667] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The RuIII-based prodrug AziRu efficiently binds to proteins, but the mechanism of its release is still disputed. Herein, in order to test the hypothesis of a reduction-mediated Ru release from proteins, a Raman-assisted crystallographic study on AziRu binding to a model protein (hen egg white lysozyme), in two different oxidation states, RuII and RuIII, was carried out. Our results indicate Ru reduction, but the Ru release upon reduction is dependent on the reducing agent. To better understand this process, a pH-dependent, spectroelectrochemical surface-enhanced Raman scattering (SERS) study was performed also on AziRu-functionalized Au electrodes as a surrogate and simplest model system of RuII- and RuIII-based drugs. This SERS study provided a p Ka of 6.0 ± 0.4 for aquated AziRu in the RuIII state, which falls in the watershed range of pH values separating most cancer environments from their physiological counterparts. These experiments also indicate a dramatic shift of the redox potential E0 by >600 mV of aquated AziRu toward more positive potentials upon acidification, suggesting a selective AziRu reduction in cancer lumen but not in healthy ones. It is expected that the nature of the ligands (e.g., pyridine vs imidazole, present in well-known RuIII complex NAMI-A) will modulate the p Ka and E0, without affecting the underlying reaction mechanism.
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Affiliation(s)
- Marco Caterino
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy
| | - Mona Herrmann
- Institut für Chemie , Technische Universität Berlin , Straße des 17 Juni 135 , Berlin 10623 , Germany
| | - Antonello Merlino
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy
| | - Claudia Riccardi
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy
| | - Daniela Montesarchio
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy
| | - Maria A Mroginski
- Institut für Chemie , Technische Universität Berlin , Straße des 17 Juni 135 , Berlin 10623 , Germany
| | - Domenica Musumeci
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy
| | - Francesco Ruffo
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy
| | - Luigi Paduano
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy
| | - Peter Hildebrandt
- Institut für Chemie , Technische Universität Berlin , Straße des 17 Juni 135 , Berlin 10623 , Germany
| | - Jacek Kozuch
- Institut für Chemie , Technische Universität Berlin , Straße des 17 Juni 135 , Berlin 10623 , Germany
| | - Alessandro Vergara
- Department of Chemical Sciences , University of Naples Federico II , via Cinthia , Naples I-80126 , Italy.,CEINGE, Biotecnologie Avanzate s.c.a.r.l.m. , via G Salvatore , Naples I-80131 , Italy
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50
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Ferraro G, Giorgio A, Mansour AM, Merlino A. Protein-mediated disproportionation of Au(i): insights from the structures of adducts of Au(iii) compounds bearingN,N-pyridylbenzimidazole derivatives with lysozyme. Dalton Trans 2019; 48:14027-14035. [DOI: 10.1039/c9dt02729g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Structural data of protein/gold adducts suggest protein-mediated reduction of Au(iii) into Au(i) and disproportionation of Au(i) into Au(iii) and Au(0).
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Affiliation(s)
- Giarita Ferraro
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
| | - Anna Giorgio
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Naples
- Italy
| | | | - Antonello Merlino
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Naples
- Italy
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