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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] [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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2
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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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3
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4
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Fernandes AR, Mendonça-Martins I, Santos MFA, Raposo LR, Mendes R, Marques J, Romão CC, Romão MJ, Santos-Silva T, Baptista PV. Improving the Anti-inflammatory Response via Gold Nanoparticle Vectorization of CO-Releasing Molecules. ACS Biomater Sci Eng 2020; 6:1090-1101. [DOI: 10.1021/acsbiomaterials.9b01936] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Alexandra R. Fernandes
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Inês Mendonça-Martins
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
- UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Marino F. A. Santos
- UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Luís R. Raposo
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Rita Mendes
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Joana Marques
- Instituto de Tecnologia Quı́mica e Biológica—António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - Carlos C. Romão
- Instituto de Tecnologia Quı́mica e Biológica—António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - Maria João Romão
- UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Teresa Santos-Silva
- UCIBIO, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Pedro V. Baptista
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
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5
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Mansour AM, Radacki K. Antimicrobial properties of half-sandwich Ir(iii) cyclopentadienyl complexes with pyridylbenzimidazole ligands. Dalton Trans 2020; 49:4491-4501. [DOI: 10.1039/d0dt00451k] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ethyl group determined the toxicity of pyridylbenzimidazole Ir(iii) compounds and exchange of the group with sulfonate led to diminishing of the antibacterial activity. Increasing the metal content per complex, 3, gave rise to a compound with no toxicity.
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Affiliation(s)
- Ahmed M. Mansour
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | - Krzysztof Radacki
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- D-97074 Würzburg
- Germany
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6
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De Simone A, Naldi M, Tedesco D, Milelli A, Bartolini M, Davani L, Widera D, Dallas ML, Andrisano V. Investigating in Vitro Amyloid Peptide 1-42 Aggregation: Impact of Higher Molecular Weight Stable Adducts. ACS OMEGA 2019; 4:12308-12318. [PMID: 31460348 PMCID: PMC6682006 DOI: 10.1021/acsomega.9b01531] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/05/2019] [Indexed: 05/21/2023]
Abstract
The self-assembly of amyloid peptides (Aβ), in particular Aβ1-42, into oligomers and fibrils is one of the main pathological events related to Alzheimer's disease. Recent studies have demonstrated the ability of carbon monoxide-releasing molecules (CORMs) to protect neurons and astrocytes from Aβ1-42 toxicity. In fact, CORMs are able to carry and release controlled levels of CO and are known to exert a wide range of anti-inflammatory and anti-apoptotic activities at physiologically relevant concentrations. In order to investigate the direct effects of CORMs on Aβ1-42, we studied the reactivity of CORM-2 and CORM-3 with Aβ1-42 in vitro and the potential inhibition of its aggregation by mass spectrometry (MS), as well as fluorescence and circular dichroism spectroscopies. The application of an electrospray ionization-MS (ESI-MS) method allowed the detection of stable Aβ1-42/CORMs adducts, involving the addition of the Ru(CO)2 portion of CORMs at histidine residues on the Aβ1-42 skeleton. Moreover, CORMs showed anti-aggregating properties through formation of stable adducts with Aβ1-42 as demonstrated by a thioflavin T fluorescence assay and MS analysis. As further proof, comparison of the CD spectra of Aβ1-42 recorded in the absence and in the presence of CORM-3 at a 1:1 molar ratio showed the ability of CORM-3 to stabilize the peptide in its soluble, unordered conformation, thereby preventing its misfolding and aggregation. This multi-methodological investigation revealed novel interactions between Aβ1-42 and CORMs, contributing new insights into the proposed neuroprotective mechanisms mediated by CORMs and disclosing a new strategy to divert amyloid aggregation and toxicity.
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Affiliation(s)
- Angela De Simone
- Department
for Life Quality Studies, Alma Mater Studiorum
Università di Bologna, Rimini 47921, Italy
| | - Marina Naldi
- Department
of Pharmacy and Biotechnology, Alma Mater
Studiorum Università di Bologna, Bologna 40126, Italy
- Center
for Applied Biomedical Research (C.R.B.A.) S. Orsola-Malpighi Hospital, Bologna 40126, Italy
| | - Daniele Tedesco
- Department
of Pharmacy and Biotechnology, Alma Mater
Studiorum Università di Bologna, Bologna 40126, Italy
| | - Andrea Milelli
- Department
for Life Quality Studies, Alma Mater Studiorum
Università di Bologna, Rimini 47921, Italy
| | - Manuela Bartolini
- Department
of Pharmacy and Biotechnology, Alma Mater
Studiorum Università di Bologna, Bologna 40126, Italy
| | - Lara Davani
- Department
for Life Quality Studies, Alma Mater Studiorum
Università di Bologna, Rimini 47921, Italy
| | - Darius Widera
- Reading
School of Pharmacy, University of Reading, Reading RG6 6UB, U.K.
| | - Mark L. Dallas
- Reading
School of Pharmacy, University of Reading, Reading RG6 6UB, U.K.
| | - Vincenza Andrisano
- Department
for Life Quality Studies, Alma Mater Studiorum
Università di Bologna, Rimini 47921, Italy
- E-mail:
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7
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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] [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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8
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Russo Krauss I, Ferraro G, Pica A, Márquez JA, Helliwell JR, Merlino A. Principles and methods used to grow and optimize crystals of protein-metallodrug adducts, to determine metal binding sites and to assign metal ligands. Metallomics 2018; 9:1534-1547. [PMID: 28967006 DOI: 10.1039/c7mt00219j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The characterization of the interactions between biological macromolecules (proteins and nucleic acids) and metal-based drugs is a fundamental prerequisite for understanding their mechanisms of action. X-ray crystallography enables the structural analysis of such complexes with atomic level detail. However, this approach requires the preparation of highly diffracting single crystals, the measurement of diffraction patterns and the structural analysis and interpretation of macromolecule-metal interactions from electron density maps. In this review, we describe principles and methods used to grow and optimize crystals of protein-metallodrug adducts, to determine metal binding sites and to assign and validate metal ligands. Examples from the literature and experience in our own laboratory are provided and key challenges are described, notably crystallization and molecular model refinement against the X-ray diffraction data.
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Affiliation(s)
- Irene Russo Krauss
- 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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Vergara A, Caterino M, Merlino A. Raman-markers of X-ray radiation damage of proteins. Int J Biol Macromol 2018; 111:1194-1205. [PMID: 29374529 DOI: 10.1016/j.ijbiomac.2018.01.135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/10/2018] [Accepted: 01/19/2018] [Indexed: 12/25/2022]
Abstract
Despite their high relevance, the mechanisms of X-ray radiation damage on protein structure yet have to be completely established. Here, we used Raman microspectrophotometry to follow X-ray-induced chemical modifications on the structure of the model protein bovine pancreatic ribonuclease (RNase A). The combination of dose-dependent Raman spectra and ultrahigh resolution (eight structures solved using data collected between 0.85 and 1.17 Å resolution on the same single crystal) allowed direct observation of several radiation damage events, including covalent bond breakages and formation of radicals. Our results are relevant for analytical photodamage detection and provide implications for a detailed understanding of the mechanisms of photoproduct formation.
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Affiliation(s)
- Alessandro Vergara
- Department of Chemical Sciences, University of Naples "Federico II", Via Cinthia, Naples I-80126, Italy; CEINGE Biotecnologie Avanzate Scarl, Via G. Salvatore, Napoli, Italy
| | - Marco Caterino
- Department of Chemical Sciences, University of Naples "Federico II", Via Cinthia, Naples I-80126, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples "Federico II", Via Cinthia, Naples I-80126, Italy.
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10
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Mirabelli V, Majidi Salehi S, Angiolillo L, Belviso BD, Conte A, Del Nobile MA, Di Profio G, Caliandro R. Enzyme Crystals and Hydrogel Composite Membranes as New Active Food Packaging Material. GLOBAL CHALLENGES (HOBOKEN, NJ) 2018; 2:1700089. [PMID: 31565305 PMCID: PMC6607345 DOI: 10.1002/gch2.201700089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/01/2017] [Indexed: 06/10/2023]
Abstract
The great antimicrobial and antioxidant potential of enzymes makes them prone to be used as active packaging materials to preserve food from contamination or degradation. Major drawbacks are connected to the use of enzymes freely dispersed in solution, due to reduced protein stability. The immobilization of enzymes on solid supports to create biocatalytic interfaces has instead been proven to increase their stability and efficiency. In this work, it is shown that enzymes crystallized on hydrogel composite membranes (HCMs) can exert an effective antimicrobial action, thus making the composite membrane and crystals biofilm a potential active substrate for food packaging applications. The antimicrobial hen egg white lysozyme is crystallized on the surface of the hydrogel layer of HCMs, and its activity is determined by measuring the decrease in absorbance of Micrococcus lysodeikticus culture incubated with the specimen. The overall catalytic efficiency of the antimicrobial HCMs increases by a factor of 2 compared to the pure enzyme dissolved in solution at the same quantity. Because the enzyme in crystalline form is present in higher concentration and purity than in the solution, both its overall catalytic efficiency and antimicrobial action increase. Moreover, the hydrogel environment allows a better protein stabilization and retention during crystals dissolution.
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Affiliation(s)
- Valentina Mirabelli
- Institute of Crystallography (IC)National Research Council of Italy (CNR)via G. Amendola 122/o70126BariItaly
- Department of EconomicsUniversity of FoggiaLargo Papa Giovanni Paolo II, 171121FoggiaItaly
| | - Shabnam Majidi Salehi
- National Research Council of Italy (CNR) – Institute on Membrane Technology (ITM)via P. Bucci Cubo 17/C87036Rende (CS)Italy
| | - Luisa Angiolillo
- Department of Agricultural SciencesUniversity of FoggiaFood and Environment – Via Napoli 2571121FoggiaItaly
| | - Benny Danilo Belviso
- Institute of Crystallography (IC)National Research Council of Italy (CNR)via G. Amendola 122/o70126BariItaly
| | - Amalia Conte
- Department of Agricultural SciencesUniversity of FoggiaFood and Environment – Via Napoli 2571121FoggiaItaly
| | | | - Gianluca Di Profio
- National Research Council of Italy (CNR) – Institute on Membrane Technology (ITM)via P. Bucci Cubo 17/C87036Rende (CS)Italy
| | - Rocco Caliandro
- Institute of Crystallography (IC)National Research Council of Italy (CNR)via G. Amendola 122/o70126BariItaly
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11
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Ferraro G, Mansour AM, Merlino A. Exploring the interactions between model proteins and Pd(ii) or Pt(ii) compounds bearing charged N,N-pyridylbenzimidazole bidentate ligands by X-ray crystallography. Dalton Trans 2018; 47:10130-10138. [DOI: 10.1039/c8dt01663a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
X-ray structure of the adducts formed between lysozyme and Pd(ii) and Pt(ii) compounds bearing N,N-pyridylbenzimidazole derivatives with an alkylated sulfonate or phosphonium side chain are reported.
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Affiliation(s)
- Giarita Ferraro
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- 80126 Napoli
- Italy
| | - Ahmed M. Mansour
- Department of Chemistry
- Faculty of Science
- Cairo University
- Giza
- Egypt
| | - Antonello Merlino
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- 80126 Napoli
- Italy
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12
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Barbosa MIF, Correa RS, Bastos TM, Pozzi LV, Moreira DRM, Ellena J, Doriguetto AC, Silveira RG, Oliveira CR, Kuznetsov AE, Malta VS, Soares MBP, Batista AA. Structural isomerism of Ru(ii)-carbonyl complexes: synthesis, characterization and their antitrypanosomal activities. NEW J CHEM 2017. [DOI: 10.1039/c7nj00125h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
New complexes with the formula [RuCl(CO)(dppb)(N–N)]PF6 were prepared by varying the CO position as well as the diimine ligand.
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13
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Popova M, Soboleva T, Arif A, Berreau LM. Properties of a flavonol-based photoCORM in aqueous buffered solutions: influence of metal ions, surfactants and proteins on visible light-induced CO release. RSC Adv 2017. [DOI: 10.1039/c7ra02653f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A flavonol-based photoCORM exhibits reliable visible light-induced CO release in aqueous buffer environments containing constituents of relevance to biological environments.
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Affiliation(s)
- Marina Popova
- Department of Chemistry & Biochemistry
- Utah State University
- Logan
- USA
| | - Tatiana Soboleva
- Department of Chemistry & Biochemistry
- Utah State University
- Logan
- USA
| | - Atta M. Arif
- Department of Chemistry
- University of Utah
- Salt Lake City
- USA
| | - Lisa M. Berreau
- Department of Chemistry & Biochemistry
- Utah State University
- Logan
- USA
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14
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Pontillo N, Ferraro G, Messori L, Tamasi G, Merlino A. Ru-Based CO releasing molecules with azole ligands: interaction with proteins and the CO release mechanism disclosed by X-ray crystallography. Dalton Trans 2017; 46:9621-9629. [DOI: 10.1039/c7dt01991b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Structural data on the adducts formed upon reaction of Ru-based CO releasing molecules containing azole ligands with model proteins are reported.
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Affiliation(s)
- Nicola Pontillo
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant’ Angelo
- Napoli
- Italy
| | - Giarita Ferraro
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant’ Angelo
- Napoli
- Italy
| | - Luigi Messori
- Department of Chemistry
- University of Florence
- Sesto Fiorentino
- Italy
| | - Gabriella Tamasi
- Department of Biotechnology
- Chemistry and Pharmacy
- University of Siena
- Italy
| | - Antonello Merlino
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant’ Angelo
- Napoli
- Italy
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15
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Interactions between proteins and Ru compounds of medicinal interest: A structural perspective. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.08.001] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Khattri RB, Morris DL, Davis CM, Bilinovich SM, Caras AJ, Panzner MJ, Debord MA, Leeper TC. An NMR-Guided Screening Method for Selective Fragment Docking and Synthesis of a Warhead Inhibitor. Molecules 2016; 21:molecules21070846. [PMID: 27438815 PMCID: PMC6274284 DOI: 10.3390/molecules21070846] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 02/07/2023] Open
Abstract
Selective hits for the glutaredoxin ortholog of Brucella melitensis are determined using STD NMR and verified by trNOE and (15)N-HSQC titration. The most promising hit, RK207, was docked into the target molecule using a scoring function to compare simulated poses to experimental data. After elucidating possible poses, the hit was further optimized into the lead compound by extension with an electrophilic acrylamide warhead. We believe that focusing on selectivity in this early stage of drug discovery will limit cross-reactivity that might occur with the human ortholog as the lead compound is optimized. Kinetics studies revealed that lead compound 5 modified with an ester group results in higher reactivity than an acrylamide control; however, after modification this compound shows little selectivity for bacterial protein versus the human ortholog. In contrast, hydrolysis of compound 5 to the acid form results in a decrease in the activity of the compound. Together these results suggest that more optimization is warranted for this simple chemical scaffold, and opens the door for discovery of drugs targeted against glutaredoxin proteins-a heretofore untapped reservoir for antibiotic agents.
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Affiliation(s)
- Ram B Khattri
- Department of Chemistry and Biochemistry, The University of Akron, Akron, OH 44325, USA.
| | - Daniel L Morris
- Department of Chemistry and Biochemistry, The University of Akron, Akron, OH 44325, USA.
| | - Caroline M Davis
- Department of Chemistry and Biochemistry, The University of Akron, Akron, OH 44325, USA.
| | - Stephanie M Bilinovich
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA.
| | - Andrew J Caras
- Department of Chemistry and Biochemistry, The University of Akron, Akron, OH 44325, USA.
| | - Matthew J Panzner
- Department of Chemistry and Biochemistry, The University of Akron, Akron, OH 44325, USA.
| | - Michael A Debord
- Department of Chemistry and Biochemistry, The University of Akron, Akron, OH 44325, USA.
| | - Thomas C Leeper
- Department of Chemistry and Biochemistry, The University of Akron, Akron, OH 44325, USA.
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17
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Sachs U, Schaper G, Winkler D, Kratzert D, Kurz P. Light- or oxidation-triggered CO release from [MnI(CO)3(κ3-L)] complexes: reaction intermediates and a new synthetic route to [MnIII/IV2(μ-O)2(L)2] compounds. Dalton Trans 2016; 45:17464-17473. [DOI: 10.1039/c6dt02020h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The substitution of the carbonyl ligands of [MnI(CO)3(κ3-L)] complexes can be triggered in two different ways: by near-UV irradiation or by electrochemical oxidation of MnI to MnII.
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Affiliation(s)
- Ulf Sachs
- Institut für Anorganische und Analytische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
| | - Gerrit Schaper
- Institut für Anorganische und Analytische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
| | - Daniela Winkler
- Institut für Anorganische und Analytische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
| | - Daniel Kratzert
- Institut für Anorganische und Analytische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
| | - Philipp Kurz
- Institut für Anorganische und Analytische Chemie
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburg
- Germany
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18
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Caterino M, Petruk AA, Vergara A, Ferraro G, Marasco D, Doctorovich F, Estrin DA, Merlino A. Mapping the protein-binding sites for iridium(iii)-based CO-releasing molecules. Dalton Trans 2016; 45:12206-14. [DOI: 10.1039/c6dt01685e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Mass spectrometry, Raman microspectroscopy, circular dichroism and X-ray crystallography have been used to investigate the reaction of CO-releasing molecule Cs2IrCl5CO with the model protein RNase A.
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Affiliation(s)
- Marco Caterino
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
| | - Ariel A. Petruk
- Departamento de Química Inorgánica
- Analítica y Química Física/INQUIMAE-CONICET
- University of Buenos Aires
- Ciudad Universitaria
- C1428EHA Buenos Aires
| | - Alessandro Vergara
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
| | - Giarita Ferraro
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
| | - Daniela Marasco
- CNR Institute of Biostructures and Bioimages
- Napoli
- Italy
- Department of Pharmacy
- University of Naples Federico II
| | - Fabio Doctorovich
- Departamento de Química Inorgánica
- Analítica y Química Física/INQUIMAE-CONICET
- University of Buenos Aires
- Ciudad Universitaria
- C1428EHA Buenos Aires
| | - Dario A. Estrin
- Departamento de Química Inorgánica
- Analítica y Química Física/INQUIMAE-CONICET
- University of Buenos Aires
- Ciudad Universitaria
- C1428EHA Buenos Aires
| | - Antonello Merlino
- Department of Chemical Sciences
- University of Naples Federico II
- Complesso Universitario di Monte Sant'Angelo
- Napoli
- Italy
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Small Signaling Molecules and CO-Releasing Molecules (CORMs) for the Modulation of the Cellular Redox Metabolism. OXIDATIVE STRESS IN APPLIED BASIC RESEARCH AND CLINICAL PRACTICE 2016. [DOI: 10.1007/978-3-319-30705-3_13] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Simpson PV, Radacki K, Braunschweig H, Schatzschneider U. An iridium N-heterocyclic carbene complex [IrCl(CO)2(NHC)] as a carbon monoxide-releasing molecule (CORM). J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.12.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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