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Devi L, Kuzhalmozhi Madarasi P, Christopher Jeyakumar T. Computational studies of adsorption of dinitrogen over the group 8 metal-borazine complexes. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01953-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Orzeł Ł, Oszajca M, Polaczek J, Porębska D, van Eldik R, Stochel G. High-Pressure Mechanistic Insight into Bioinorganic NO Chemistry. Molecules 2021; 26:molecules26164947. [PMID: 34443535 PMCID: PMC8401417 DOI: 10.3390/molecules26164947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/06/2021] [Accepted: 08/12/2021] [Indexed: 11/23/2022] Open
Abstract
Pressure is one of the most important parameters controlling the kinetics of chemical reactions. The ability to combine high-pressure techniques with time-resolved spectroscopy has provided a powerful tool in the study of reaction mechanisms. This review is focused on the supporting role of high-pressure kinetic and spectroscopic methods in the exploration of nitric oxide bioinorganic chemistry. Nitric oxide and other reactive nitrogen species (RNS) are important biological mediators involved in both physiological and pathological processes. Understanding molecular mechanisms of their interactions with redox-active metal/non-metal centers in biological targets, such as cofactors, prosthetic groups, and proteins, is crucial for the improved therapy of various diseases. The present review is an attempt to demonstrate how the application of high-pressure kinetic and spectroscopic methods can add additional information, thus enabling the mechanistic interpretation of various NO bioinorganic reactions.
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Affiliation(s)
- Łukasz Orzeł
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (Ł.O.); (M.O.); (J.P.); (D.P.)
| | - Maria Oszajca
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (Ł.O.); (M.O.); (J.P.); (D.P.)
| | - Justyna Polaczek
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (Ł.O.); (M.O.); (J.P.); (D.P.)
| | - Dominika Porębska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (Ł.O.); (M.O.); (J.P.); (D.P.)
| | - Rudi van Eldik
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (Ł.O.); (M.O.); (J.P.); (D.P.)
- Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstr 1, 91058 Erlangen, Germany
- Correspondence: (R.v.E.); (G.S.); Tel.: +48-66-777-2932 (R.v.E.); +48-12-686-2502 (G.S.)
| | - Grażyna Stochel
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; (Ł.O.); (M.O.); (J.P.); (D.P.)
- Correspondence: (R.v.E.); (G.S.); Tel.: +48-66-777-2932 (R.v.E.); +48-12-686-2502 (G.S.)
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Kuncewicz J, Dąbrowski JM, Kyzioł A, Brindell M, Łabuz P, Mazuryk O, Macyk W, Stochel G. Perspectives of molecular and nanostructured systems with d- and f-block metals in photogeneration of reactive oxygen species for medical strategies. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.07.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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4
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Theoretical insights into stabilization of silicon and silicon-carbon mixed oxides: A mechanistic study. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.118957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Phosphine/diimine ruthenium complexes with Cl−, CO, NO+, NO2−, NO3− and pyridine ligands: Pro-apoptotic activity on triple-negative breast cancer cells and DNA/HSA interactions. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.01.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Oszajca M, Brindell M, Orzeł Ł, Dąbrowski JM, Śpiewak K, Łabuz P, Pacia M, Stochel-Gaudyn A, Macyk W, van Eldik R, Stochel G. Mechanistic studies on versatile metal-assisted hydrogen peroxide activation processes for biomedical and environmental incentives. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.05.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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8
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Nandi G, Chilukuri B, Hipps KW, Mazur U. Surface directed reversible imidazole ligation to nickel(ii) octaethylporphyrin at the solution/solid interface: a single molecule level study. Phys Chem Chem Phys 2016; 18:20819-29. [DOI: 10.1039/c6cp04454a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
STM and DFT calculations are used to study the reversible binding of imidazole to NiOEP supported on HOPG in solution.
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Affiliation(s)
- Goutam Nandi
- Department of Chemistry and Materials Science and Engineering Program
- Washington State University
- Pullman
- USA
| | - Bhaskar Chilukuri
- Department of Chemistry and Materials Science and Engineering Program
- Washington State University
- Pullman
- USA
| | - K. W. Hipps
- Department of Chemistry and Materials Science and Engineering Program
- Washington State University
- Pullman
- USA
| | - Ursula Mazur
- Department of Chemistry and Materials Science and Engineering Program
- Washington State University
- Pullman
- USA
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Oszajca M, Franke A, Brindell M, Stochel G, van Eldik R. Redox cycling in the activation of peroxides by iron porphyrin and manganese complexes. ‘Catching’ catalytic active intermediates. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.01.013] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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Cordeiro RM. Reactive oxygen species at phospholipid bilayers: distribution, mobility and permeation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1838:438-44. [PMID: 24095673 DOI: 10.1016/j.bbamem.2013.09.016] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 09/12/2013] [Accepted: 09/23/2013] [Indexed: 10/26/2022]
Abstract
Reactive oxygen species (ROS) are involved in biochemical processes such as redox signaling, aging, carcinogenesis and neurodegeneration. Although biomembranes are targets for reactive oxygen species attack, little is known about the role of their specific interactions. Here, molecular dynamics simulations were employed to determine the distribution, mobility and residence times of various reactive oxygen species at the membrane-water interface. Simulations showed that molecular oxygen (O2) accumulated at the membrane interior. The applicability of this result to singlet oxygen ((1)O2) was discussed. Conversely, superoxide (O2(-)) radicals and hydrogen peroxide (H2O2) remained at the aqueous phase. Both hydroxyl (HO) and hydroperoxyl (HO2) radicals were able to penetrate deep into the lipid headgroups region. Due to membrane fluidity and disorder, these radicals had access to potential peroxidation sites along the lipid hydrocarbon chains, without having to overcome the permeation free energy barrier. Strikingly, HO2 radicals were an order of magnitude more concentrated in the headgroups region than in water, implying a large shift in the acid-base equilibrium between HO2 and O2(-). In comparison with O2, both HO and HO2 radicals had lower lateral mobility at the membrane. Simulations revealed that there were intermittent interruptions in the H-bond network around the HO radicals at the headgroups region. This effect is expected to be unfavorable for the H-transfer mechanism involved in HO diffusion. The implications for lipid peroxidation and for the effectiveness of membrane antioxidants were evaluated.
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Affiliation(s)
- Rodrigo M Cordeiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adélia 166, CEP 09210-170, Santo André (SP), Brazil.
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11
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Baran T, Macyk W. Photocatalytic oxidation of volatile pollutants of air driven by visible light. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.05.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Barbieriková Z, Mihalíková M, Brezová V. Photoinduced Oxidation of Sterically Hindered Amines in Acetonitrile Solutions and Titania Suspensions (An EPR Study). Photochem Photobiol 2012; 88:1442-54. [DOI: 10.1111/j.1751-1097.2012.01189.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Electronic structure and spectra of nitrosyl complexes with cobalt and manganese porphyrins. Struct Chem 2012. [DOI: 10.1007/s11224-012-0053-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Manet I, Manoli F, Donzello MP, Ercolani C, Vittori D, Cellai L, Masi A, Monti S. Tetra-2,3-pyrazinoporphyrazines with Externally Appended Pyridine Rings. 10. A Water-Soluble Bimetallic (ZnII/PtII) Porphyrazine Hexacation as Potential Plurimodal Agent for Cancer Therapy: Exploring the Behavior as Ligand of Telomeric DNA G-Quadruplex Structures. Inorg Chem 2011; 50:7403-11. [DOI: 10.1021/ic200514z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ilse Manet
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| | - Francesco Manoli
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| | - Maria Pia Donzello
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Claudio Ercolani
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Daniela Vittori
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Luciano Cellai
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma 1, 00015 Monterotondo Scalo, Rome, Italy
| | - Annalisa Masi
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma 1, 00015 Monterotondo Scalo, Rome, Italy
| | - Sandra Monti
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
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Lanucara F, Chiavarino B, Crestoni ME, Scuderi D, Sinha RK, Maı̂tre P, Fornarini S. Naked Five-Coordinate FeIII(NO) Porphyrin Complexes: Vibrational and Reactivity Features. Inorg Chem 2011; 50:4445-52. [DOI: 10.1021/ic200073v] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Francesco Lanucara
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma “La Sapienza”, P.le A. Moro 5, I-00185, Roma, Italy
| | - Barbara Chiavarino
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma “La Sapienza”, P.le A. Moro 5, I-00185, Roma, Italy
| | - Maria Elisa Crestoni
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma “La Sapienza”, P.le A. Moro 5, I-00185, Roma, Italy
| | - Debora Scuderi
- Laboratoire de Chimie Physique, UMR8000 CNRS, Faculté des Sciences, Université Paris Sud, Bâtiment 350, 91405 Orsay Cedex, France
| | - Rajeev K. Sinha
- Laboratoire de Chimie Physique, UMR8000 CNRS, Faculté des Sciences, Université Paris Sud, Bâtiment 350, 91405 Orsay Cedex, France
| | - Philippe Maı̂tre
- Laboratoire de Chimie Physique, UMR8000 CNRS, Faculté des Sciences, Université Paris Sud, Bâtiment 350, 91405 Orsay Cedex, France
| | - Simonetta Fornarini
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma “La Sapienza”, P.le A. Moro 5, I-00185, Roma, Italy
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16
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Kuncewicz J, Ząbek P, Stochel G, Stasicka Z, Macyk W. Visible light driven photocatalysis in chromate(VI)/TiO2 systems—Improving stability of the photocatalyst. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.10.075] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Stasicka Z. Transition metal complexes as solar photocatalysts in the environment. ADVANCES IN INORGANIC CHEMISTRY 2011. [DOI: 10.1016/b978-0-12-385904-4.00004-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Macyk W, Szaciłowski K, Stochel G, Buchalska M, Kuncewicz J, Łabuz P. Titanium(IV) complexes as direct TiO2 photosensitizers. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.12.037] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Weerasooriya R, Makehelwala M, Bandara A. Probing reactivity sites on pyrite-oxidative interactions with 4-chlorophenol. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.06.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Buchalska M, Kras G, Oszajca M, Łasocha W, Macyk W. Singlet oxygen generation in the presence of titanium dioxide materials used as sunscreens in suntan lotions. J Photochem Photobiol A Chem 2010. [DOI: 10.1016/j.jphotochem.2010.05.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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de Santana DCAS, Pupo TT, Sauaia MG, da Silva RS, Lopez RFV. Nitric oxide photorelease from hydrogels and from skin containing a nitro-ruthenium complex. Int J Pharm 2010; 391:21-8. [DOI: 10.1016/j.ijpharm.2010.02.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 01/26/2010] [Accepted: 02/08/2010] [Indexed: 10/19/2022]
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22
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Solano-Peralta A, Saucedo-Vázquez JP, Escudero R, Höpfl H, El-Mkami H, Smith GM, Sosa-Torres ME. Magnetic and high-frequency EPR studies of an octahedral Fe(iii) compound with unusual zero-field splitting parameters. Dalton Trans 2009:1668-74. [DOI: 10.1039/b814225d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sanina N, Roudneva T, Shilov G, Morgunov R, Ovanesyan N, Aldoshin S. Structure and properties of binuclear nitrosyl iron complex with benzimidazole-2-thiolyl. Dalton Trans 2009:1703-6. [DOI: 10.1039/b818443g] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Brindell M, Stawoska I, Orzeł L, Labuz P, Stochel G, van Eldik R. Application of high pressure laser flash photolysis in studies on selected hemoprotein reactions. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2008; 1784:1481-92. [PMID: 18778796 DOI: 10.1016/j.bbapap.2008.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Revised: 07/14/2008] [Accepted: 08/04/2008] [Indexed: 12/31/2022]
Abstract
This article focuses on the application of high pressure laser flash photolysis for studies on selected hemoprotein reactions with the objective to establish details of the underlying reaction mechanisms. In this context, particular attention is given to the reactions of small molecules such as dioxygen, carbon monoxide, and nitric oxide with selected hemoproteins (hemoglobin, myoglobin, neuroglobin and cytochrome P450(cam)), as well as to photo-induced electron transfer reactions occurring in hemoproteins (particularly in various types of cytochromes). Mechanistic conclusions based on the interpretation of the obtained activation volumes are discussed in this account.
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Affiliation(s)
- Małgorzata Brindell
- Department of Inorganic Chemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Krakow, Poland
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Chiavarino B, Crestoni ME, Fornarini S, Rovira C. Unravelling the intrinsic features of NO binding to iron(II)- and iron(III)-hemes. Inorg Chem 2008; 47:7792-801. [PMID: 18681420 DOI: 10.1021/ic800953w] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrospray ionization of appropriate precursors is used to deliver [Fe (III)-heme] (+) and [Fe (II)-hemeH] (+) ions as naked species in the gas phase where their ion chemistry has been examined by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. In the naked, four-coordinate [Fe (II)-hemeH] (+) and [Fe (III)-heme] (+) ions, the intrinsic reactivity of iron(II)- and iron(III)-hemes is revealed free from any influence due to axial ligand, counterion, or solvent effects. Ligand (L) addition and ligand transfer equilibria with a series of selected neutrals are attained when [Fe (II)-hemeH] (+), corresponding to protonated Fe (II)-heme, is allowed to react in the FT-ICR cell. A Heme Cation Basicity (HCB) ladder for the various ligands toward [Fe (II)-hemeH] (+), corresponding to -Delta G degrees for the process [Fe (II)-hemeH] (+) + L --> [Fe (II)-hemeH(L)] (+) and named HCB (II), can thus be established. The so-obtained HCB (II) values are compared with the corresponding HCB (III) values for [Fe (III)-heme] (+). In spite of pronounced differences displayed by various ligands, NO shows a quite similar HCB of about 67 kJ mol (-1) at 300 K toward both ions, estimated to correspond to a binding energy of 124 kJ mol (-1). Density Functional Theory (DFT) computations confirm the experimental results, yielding very similar values of NO binding energies to [Fe (II)-hemeH] (+) and [Fe (III)-heme] (+), equal to 140 and 144 kJ mol (-1), respectively. The kinetic study of the NO association reaction supports the equilibrium HCB data and reveals that the two species share very close rate constant values both for the forward and for the reverse reaction. These gas phase results diverge markedly from the kinetics and thermodynamic behavior of NO binding to iron(II)- and iron(III)-heme proteins and model complexes in solution. The requisite of either a very labile or a vacant coordination site on iron for a facile addition of NO to occur, suggested to explain the bias for typically five-coordinate iron(II) species in solution, is fully supported by the present work.
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Affiliation(s)
- Barbara Chiavarino
- Dipartimento di Chimica e Tecnologia del Farmaco, Universita di Roma "La Sapienza", P.le A. Moro 5, I-00185 Roma, Italy
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Bordini J, Novaes D, Borissevitch I, Owens B, Ford P, Tfouni E. Acidity and photolability of ruthenium salen nitrosyl and aquo complexes in aqueous solutions. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2007.11.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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27
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Jańczyk A, Wolnicka-Głubisz A, Urbanska K, Kisch H, Stochel G, Macyk W. Photodynamic activity of platinum(IV) chloride surface-modified TiO2 irradiated with visible light. Free Radic Biol Med 2008; 44:1120-30. [PMID: 18194674 DOI: 10.1016/j.freeradbiomed.2007.12.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2007] [Revised: 11/23/2007] [Accepted: 12/07/2007] [Indexed: 10/22/2022]
Abstract
The visible light-induced phototoxicity of titanium dioxide modified with platinum(IV) chloride complexes, [TiO2/PtCl4], was tested. In vitro experiments with the mouse melanoma cells (S-91) have demonstrated phototoxicity of the [TiO2/PtCl4] material. Detection of efficiently generated various reactive oxygen species (.OH, O2. -, H2O2, 1O2) and also reactive chlorine species has proven the photodynamic activity of the tested material, induced by visible light (lambda>455 nm). The cellular death (recognized as a necrosis) is a result of the cell membrane peroxidation.
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Affiliation(s)
- Agnieszka Jańczyk
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
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Boeré RT, Tuononen HM, Chivers T, Roemmele TL. Structures and EPR spectra of binary sulfur–nitrogen radicals from DFT calculations. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.11.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Moro G, Bonati L, Bruschi M, Cosentino U, De Gioia L, Fantucci PC, Pandini A, Papaleo E, Pitea D, Saracino GA, Zampella G. Computational approaches to shed light on molecular mechanisms in biological processes. Theor Chem Acc 2007; 117:723-741. [PMID: 21415934 PMCID: PMC3057205 DOI: 10.1007/s00214-006-0203-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Computational approaches based on Molecular Dynamics simulations, Quantum Mechanical methods and 3D Quantitative Structure-Activity Relationships were employed by computational chemistry groups at the University of Milano-Bicocca to study biological processes at the molecular level. The paper reports the methodologies adopted and the results obtained on Aryl hydrocarbon Receptor and homologous PAS proteins mechanisms, the properties of prion protein peptides, the reaction pathway of hydrogenase and peroxidase enzymes and the defibrillogenic activity of tetracyclines.
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Affiliation(s)
- Giorgio Moro
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Laura Bonati
- Dipartimento di Scienze dell’Ambiente e del Territorio, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Maurizio Bruschi
- Dipartimento di Scienze dell’Ambiente e del Territorio, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Ugo Cosentino
- Dipartimento di Scienze dell’Ambiente e del Territorio, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Luca De Gioia
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Pier Carlo Fantucci
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Alessandro Pandini
- Dipartimento di Scienze dell’Ambiente e del Territorio, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Elena Papaleo
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Demetrio Pitea
- Dipartimento di Scienze dell’Ambiente e del Territorio, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Gloria A.A. Saracino
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
| | - Giuseppe Zampella
- Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Piazza della Scienza, Milano 20126, Italy
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Mitoraj D, Jańczyk A, Strus M, Kisch H, Stochel G, Heczko PB, Macyk W. Visible light inactivation of bacteria and fungi by modified titanium dioxide. Photochem Photobiol Sci 2007; 6:642-8. [PMID: 17549266 DOI: 10.1039/b617043a] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible light induced photocatalytic inactivation of bacteria (Escherichia coli, Staphylococcus aureus, Enterococcus faecalis) and fungi (Candida albicans, Aspergillus niger) was tested. Carbon-doped titanium dioxide and TiO2 modified with platinum(IV) chloride complexes were used as suspension or immobilised at the surface of plastic plates. A biocidal effect was observed under visible light irradiation in the case of E. coli in the presence of both photocatalysts. The platinum(IV) modified titania exhibited a higher inactivation effect, also in the absence of light. The mechanism of visible light induced photoinactivation is briefly discussed. The observed detrimental effect of photocatalysts on various microorganism groups decreases in the order: E. coli > S. aureus approximately E. faecalis>>C. albicans approximately A. niger. This sequence results most probably from differences in cell wall or cell membrane structures in these microorganisms and is not related to the ability of catalase production.
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Affiliation(s)
- Dariusz Mitoraj
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Kraków, Poland
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31
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Synthesis, structure, and NO-donor activity of the paramagnetic complex [Fe2(SC3H5N2)2(NO)4] as a model of nitrosyl [2FE-2S] proteins. Russ Chem Bull 2007. [DOI: 10.1007/s11172-007-0005-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Doro FG, Rodrigues-Filho UP, Tfouni E. A regenerable ruthenium tetraammine nitrosyl complex immobilized on a modified silica gel surface: preparation and studies of nitric oxide release and nitrite-to-NO conversion. J Colloid Interface Sci 2006; 307:405-17. [PMID: 17196216 DOI: 10.1016/j.jcis.2006.11.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2006] [Revised: 11/09/2006] [Accepted: 11/09/2006] [Indexed: 11/27/2022]
Abstract
Silica gel bearing isonicotinamide groups was prepared by further modification of 3-aminopropyl-functionalized silica by a reaction with isonicotinic acid and 1,3-dicyclohexylcarbodiimide to yield 3-isonicotinamidepropyl-functionalized silica gel (ISNPS). This support was characterized by means of infrared spectroscopy, elemental analysis, and specific surface area. The ISNPS was used to immobilize the [Ru(NH(3))(4)SO(3)] moiety by reaction with trans-[Ru(NH(3))(4)(SO(2))Cl]Cl, yielding [Si(CH(2))(3)(isn)Ru(NH(3))(4)(SO(3))]. The related immobilized [Si(CH(2))(3)(isn)Ru(NH(3))(4)(L)](3+/2+) (L=SO(2), SO(2-)(4), OH(2), and NO) complexes were prepared and characterized by means of UV-vis and IR spectroscopy, as well as by cyclic voltammetry. Syntheses of the nitrosyl complex were performed by reaction of the immobilized ruthenium ammine [Si(CH(2))(3)(isn)Ru(NH(3))(4)(OH(2))](2+) with nitrite in acid or neutral (pH 7.4) solution. The similar results obtained in both ways indicate that the aqua complex was able to convert nitrite into coordinated nitrosyl. The reactivity of [Si(CH(2))(3)(isn)Ru(NH(3))(4)(NO)](3+) was investigated in order to evaluate the nitric oxide (NO) release. It was found that, upon light irradiation or chemical reduction, the immobilized nitrosyl complex was able to release NO, generating the corresponding Ru(III) or Ru(II) aqua complexes, respectively. The NO material could be regenerated from these NO-depleted materials obtained photochemically or by reduction. Regeneration was done by reaction with nitrite in aqueous solution (pH 7.4). Reduction-regeneration cycles were performed up to three times with no significant leaching of the ruthenium complex.
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Affiliation(s)
- Fabio Gorzoni Doro
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. dos Bandeirantes 3900, 14040-901 Ribeirão Preto, SP, Brazil
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33
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Liang F, Schmalle HW, Berke H. μ‐Coordination Chemistry of NO Ligands: Adducts of
trans
‐Mo(dmpe)
2
(Cl)(NO) with Lithium Salts. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600482] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fupei Liang
- School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, P. R. China
| | - Helmut W. Schmalle
- Anorganisch‐Chemisches Institut der Universität Zürich, Winterthurerstrasse190, 8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch‐Chemisches Institut der Universität Zürich, Winterthurerstrasse190, 8057 Zürich, Switzerland
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