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Kretzer B, Herényi L, Csík G, Supala E, Orosz Á, Tordai H, Kiss B, Kellermayer M. TMPyP binding evokes a complex, tunable nanomechanical response in DNA. Nucleic Acids Res 2024; 52:8399-8418. [PMID: 38943349 PMCID: PMC11317170 DOI: 10.1093/nar/gkae560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 06/06/2024] [Accepted: 06/17/2024] [Indexed: 07/01/2024] Open
Abstract
TMPyP is a porphyrin capable of DNA binding and used in photodynamic therapy and G-quadruplex stabilization. Despite its broad applications, TMPyP's effect on DNA nanomechanics is unknown. Here we investigated, by manipulating λ-phage DNA with optical tweezers combined with microfluidics in equilibrium and perturbation kinetic experiments, how TMPyP influences DNA nanomechanics across wide ranges of TMPyP concentration (5-5120 nM), mechanical force (0-100 pN), NaCl concentration (0.01-1 M) and pulling rate (0.2-20 μm/s). Complex responses were recorded, for the analysis of which we introduced a simple mathematical model. TMPyP binding, which is a highly dynamic process, leads to dsDNA lengthening and softening. dsDNA stability increased at low (<10 nM) TMPyP concentrations, then decreased progressively upon increasing TMPyP concentration. Overstretch cooperativity decreased, due most likely to mechanical roadblocks of ssDNA-bound TMPyP. TMPyP binding increased ssDNA's contour length. The addition of NaCl at high (1 M) concentration competed with the TMPyP-evoked nanomechanical changes. Because the largest amplitude of the changes is induced by the pharmacologically relevant TMPyP concentration range, this porphyrin derivative may be used to tune DNA's structure and properties, hence control the wide array of biomolecular DNA-dependent processes including replication, transcription, condensation and repair.
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Affiliation(s)
- Balázs Kretzer
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
- HUNREN-SE Biophysical Virology Group, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
| | - Levente Herényi
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
| | - Gabriella Csík
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
| | - Eszter Supala
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
| | - Ádám Orosz
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
| | - Hedvig Tordai
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
| | - Bálint Kiss
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
- HUNREN-SE Biophysical Virology Group, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
| | - Miklós Kellermayer
- Department of Biophysics and Radiation Biology, Semmelweis University, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
- HUNREN-SE Biophysical Virology Group, Tűzoltó Str. 37-47, H1094 Budapest, Hungary
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Verebová V, Želonková K, Holečková B, Staničová J. The effect of neonicotinoid insecticide thiacloprid on the structure and stability of DNA. Physiol Res 2020; 68:S459-S466. [PMID: 32118477 DOI: 10.33549/physiolres.934385] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The application of pesticides and chemical fertilizers constitutes a potential risk to human and animals due to the presence of their residues in the food. Thiacloprid belongs to a group of neonicotinoid insecticides. It shows a cytotoxic/cytostatic effect in human peripheral blood lymphocytes probably due to DNA damage. The use of thiacloprid is increasingly widespread worldwide, therefore is very important the assessment of its possible genotoxic and cytotoxic effects on a living organism. That is the reason why we studied the thiacloprid influence on the structure and stability of DNA in presented work. We have been studied the thiacloprid interaction with calf thymus DNA. Association constant was determined by fluorescence spectroscopy using equilibrium receptor-ligand binding analysis. The thermal denaturation of DNA was used to identify the mode of interaction. Viscosity changes were recorded to confirm/disconfirm the intercalation mode of interaction. Given the results, we can conclude that neonicotinoid pesticide thiacloprid destabilizes DNA. It changes the structure and stability of DNA through binding into the minor groove by hydrophobic or hydrogen interactions.
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Affiliation(s)
- V Verebová
- Department of Chemistry, Biochemistry and Biophysics, Institute of Biophysics, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic.
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Singh A, Joshi S, Kukreti S. Cationic porphyrins as destabilizer of a G-quadruplex located at the promoter of human MYH7 β gene. J Biomol Struct Dyn 2019; 38:4801-4816. [PMID: 31809672 DOI: 10.1080/07391102.2019.1689850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
G-quadruplex (GQ) architecture is adopted by guanine rich sequences, present throughout the eukaryotic genome including promoter locations and telomeric ends. The in vivo presence indicates their involvement and role in various biological processes. Various small ligands have been developed to interact and stabilize/destabilize G-quadruplex structures. Cationic porphyrins are among the most studied ligands, reported to bind and stabilize G-quadruplexes. Herein, we report the recognition and destabilization of a parallel G-quadruplex by porphyrins (TMPyP3 and TMPyP4). This G-quadruplex forming 23-nt G-rich sequence is in the promoter region of Human Myosin Heavy Chain β gene (MYH7β). Presence of various putative regulatory sequence elements (TATA Box, CCAAT, SP-1) located in the vicinity of this quadruplex motif, highlight its regulatory implications. Biophysical methods as Circular Dichroism Spectroscopy, UV-Absorption Spectroscopy, UV-Thermal Denaturation and Fluorescence Spectroscopy (steady as well as Time Resolved) have been used for studying the interaction and binding parameters. It is proposed that porphyrins have a destabilizing effect on the G-quadruplexes with parallel topology and a stronger binding specifically via intercalation mode is needed to cause destabilization. The study deals with better understanding and insights of DNA-Drug interactions in biological systems.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Anju Singh
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi (North Campus), Delhi, India
| | - Savita Joshi
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi (North Campus), Delhi, India
| | - Shrikant Kukreti
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi (North Campus), Delhi, India
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Temperature-Dependent Nanomechanics and Topography of Bacteriophage T7. J Virol 2018; 92:JVI.01236-18. [PMID: 30089696 DOI: 10.1128/jvi.01236-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 07/30/2018] [Indexed: 01/10/2023] Open
Abstract
Viruses are nanoscale infectious agents which may be inactivated by heat treatment. The global molecular mechanisms of virus inactivation and the thermally induced structural changes in viruses are not fully understood. In this study, we measured the heat-induced changes in the properties of T7 bacteriophage particles exposed to a two-stage (65°C and 80°C) thermal effect, by using atomic force microscopy (AFM)-based nanomechanical and topographical measurements. We found that exposure to 65°C led to the release of genomic DNA and to the loss of the capsid tail; hence, the T7 particles became destabilized. Further heating to 80°C surprisingly led to an increase in mechanical stability, due likely to partial denaturation of the capsomeric proteins kept within the global capsid arrangement.IMPORTANCE Even though the loss of DNA, caused by heat treatment, destabilizes the T7 phage, its capsid is remarkably able to withstand high temperatures with a more or less intact global topographical structure. Thus, partial denaturation within the global structural constraints of the viral capsid may have a stabilizing effect. Understanding the structural design of viruses may help in constructing artificial nanocapsules for the packaging and delivery of materials under harsh environmental conditions.
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Oligo- and polypeptide conjugates of cationic porphyrins: binding, cellular uptake, and cellular localization. Amino Acids 2017; 49:1263-1276. [DOI: 10.1007/s00726-017-2428-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 04/20/2017] [Indexed: 10/19/2022]
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Padmapriya K, Barthwal R. Binding of the alkaloid coralyne to parallel G-quadruplex DNA [d(TTGGGGT)]4 studied by multi-spectroscopic techniques. Biophys Chem 2016; 219:49-58. [DOI: 10.1016/j.bpc.2016.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 08/17/2016] [Accepted: 09/17/2016] [Indexed: 11/16/2022]
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Cui Y, Zeng L, Fang Y, Zhu J, Xu HJ, Desbois N, Gros CP, Kadish KM. Electrochemical and Spectroelectrochemical Properties of Free-Base Pyridyl- andN-Alkyl-4-Pyridylporphyrins in Nonaqueous Media. ChemElectroChem 2015. [DOI: 10.1002/celc.201500374] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yan Cui
- Department of Chemistry; University of Houston; Houston TX 77204-5003 USA
| | - Lihan Zeng
- Department of Chemistry; University of Houston; Houston TX 77204-5003 USA
| | - Yuanyuan Fang
- Department of Chemistry; University of Houston; Houston TX 77204-5003 USA
| | - Jialiang Zhu
- Department of Chemistry; University of Houston; Houston TX 77204-5003 USA
| | - Hai-Jun Xu
- Université de Bourgogne; ICMUB UMR6302, CNRS, 9; Avenue Alain Savary, BP 47870 21078 Dijon Cedex France
- College of Chemical Engineering; Nanjing Forestry University; Nanjing 210037 China
| | - Nicolas Desbois
- Université de Bourgogne; ICMUB UMR6302, CNRS, 9; Avenue Alain Savary, BP 47870 21078 Dijon Cedex France
| | - Claude P. Gros
- Université de Bourgogne; ICMUB UMR6302, CNRS, 9; Avenue Alain Savary, BP 47870 21078 Dijon Cedex France
| | - Karl M. Kadish
- Department of Chemistry; University of Houston; Houston TX 77204-5003 USA
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Vaishnavi E, Renganathan R. "Turn-on-off-on" fluorescence switching of quantum dots-cationic porphyrin nanohybrid: a sensor for DNA. Analyst 2013; 139:225-34. [PMID: 24187682 DOI: 10.1039/c3an01871g] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In this article, we describe a new platform for probing double stranded DNA (dsDNA) by tracing the "on-off-on" fluorescence signals of quantum dots-cationic porphyrin utilizing fluorescence and synchronous fluorescence measurements. Electrostatic interaction between the negatively charged thioglycolic acid capped CdTe quantum dots (CdTe-TGA QDs) and positively charged porphyrin surfaces leads to drastic quenching (turning off) of the donor by an effective electron transfer process. Interestingly, after the addition of calf thymus DNA (CtDNA), the porphyrins peel off from the quantum dot surface and bind to dsDNA, resulting in the restoration of fluorescence intensity of quantum dots (turning on). Consequently, this can be utilized for the selective sensing of dsDNA via optical responses. Experimental results show that the increase in fluorescence intensity is proportional to the concentration of CtDNA within the range of 6.5 × 10(-9) M to 29.6 × 10(-8) M under the optimized experimental conditions. Furthermore, the peel off mechanism was confirmed by atomic force measurement.
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Affiliation(s)
- Ellappan Vaishnavi
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, Tamil Nadu, India.
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9
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Radiolysis of 5,10,15,20-tetrakis(N-methyl-4-pyridyl)-porphyrin or 5,10,15,20-tetrakis(4-sulfonatophenyl)-porphyrin in aqueous solution in the presence and in the absence of DNA or human serum albumin. Radiat Phys Chem Oxf Engl 1993 2013. [DOI: 10.1016/j.radphyschem.2013.05.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Orosz Á, Mező G, Herényi L, Habdas J, Majer Z, Myśliwa-Kurdziel B, Tóth K, Csík G. Binding of new cationic porphyrin–tetrapeptide conjugates to nucleoprotein complexes. Biophys Chem 2013; 177-178:14-23. [DOI: 10.1016/j.bpc.2013.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 03/11/2013] [Accepted: 03/16/2013] [Indexed: 11/28/2022]
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11
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Cárdenas-Jirón GI, Cortez L. Assessment of the photosensitization properties of cationic porphyrins in interaction with DNA nucleotide pairs. J Mol Model 2013; 19:2913-24. [DOI: 10.1007/s00894-013-1822-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Accepted: 03/10/2013] [Indexed: 01/15/2023]
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12
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Costa L, Faustino MAF, Neves MGPMS, Cunha Â, Almeida A. Photodynamic inactivation of mammalian viruses and bacteriophages. Viruses 2012; 4:1034-74. [PMID: 22852040 PMCID: PMC3407894 DOI: 10.3390/v4071034] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 06/12/2012] [Accepted: 06/13/2012] [Indexed: 11/16/2022] Open
Abstract
Photodynamic inactivation (PDI) has been used to inactivate microorganisms through the use of photosensitizers. The inactivation of mammalian viruses and bacteriophages by photosensitization has been applied with success since the first decades of the last century. Due to the fact that mammalian viruses are known to pose a threat to public health and that bacteriophages are frequently used as models of mammalian viruses, it is important to know and understand the mechanisms and photodynamic procedures involved in their photoinactivation. The aim of this review is to (i) summarize the main approaches developed until now for the photodynamic inactivation of bacteriophages and mammalian viruses and, (ii) discuss and compare the present state of the art of mammalian viruses PDI with phage photoinactivation, with special focus on the most relevant mechanisms, molecular targets and factors affecting the viral inactivation process.
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Affiliation(s)
- Liliana Costa
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; (L.C.); (A.C.)
| | - Maria Amparo F. Faustino
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal; (M.A.F.F.); (M.G.P.M.S.N.)
| | - Maria Graça P. M. S. Neves
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal; (M.A.F.F.); (M.G.P.M.S.N.)
| | - Ângela Cunha
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; (L.C.); (A.C.)
| | - Adelaide Almeida
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; (L.C.); (A.C.)
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Lluïsa Sagristá M, Postigo F, Africa De Madariaga M, Pintó RM, Caballero S, Bosch A, Asunción Vallés M, Mora M. Photodynamic inactivation of viruses by immobilized chlorin-containing liposomes. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424609000759] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The viral safety of blood derived products relies in properly chosen inactivation procedures. In this way, it has been reported that some photosensitizers are useful products for blood sterilization. The data presented here show the high incorporation efficiency of the chlorin 3-phorbinepropanol, 9,14-diethyl-4,8,13,18-tetramethyl-20-(3S-trans) (CHL) into anionic unilamellar liposomes, give a protocol for the steric immobilization of chlorin-containing liposomes in a chromatographic support and provide the studies of photodynamic inactivation of bovine viral diarrhea virus (BVDV) and encephalomyocarditis virus (EMCV) with chlorin-containing liposomes, free in solution and immobilized on Sephacryl S-1000 beads. The study demonstrates the successful inactivation of the enveloped virus BVDV by both preparations in culture medium and the resistance of the non-enveloped virus EMCV. The effectiveness of CHL-containing liposomes, in solution and immobilized in the chromatographic support, decreased when the culture media was replaced with human blood plasma. Moreover, the reduction factor of the virus titer after irradiation was smallest when immobilized liposomes were used. Nevertheless, the reduction factor for the virus titers of enveloped viruses after irradiation of human blood plasma samples with immobilized chlorin-containing liposomes increased with the reduction of the sample thickness. The more outstanding aspect of this paper is the design of a system useful for blood sterilization that can be easily removed after photodynamic treatment and, therefore, able to be applied in the manufacturing processes.
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Affiliation(s)
- M. Lluïsa Sagristá
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Av. Diagonal 645, E-08028 Barcelona, Spain
| | - Fernado Postigo
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Av. Diagonal 645, E-08028 Barcelona, Spain
| | - M. Africa De Madariaga
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Av. Diagonal 645, E-08028 Barcelona, Spain
| | - Rosa M. Pintó
- Department of Microbiology, University of Barcelona, Av. Diagonal 645, E-08028 Barcelona, Spain
| | - Santiago Caballero
- Department of Microbiology, University of Barcelona, Av. Diagonal 645, E-08028 Barcelona, Spain
| | - Albert Bosch
- Department of Microbiology, University of Barcelona, Av. Diagonal 645, E-08028 Barcelona, Spain
| | - M. Asunción Vallés
- Department of Organic Chemistry, University of Barcelona, Martí i Franqués 1, E-08028 Barcelona, Spain
| | - Margarita Mora
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Barcelona, Av. Diagonal 645, E-08028 Barcelona, Spain
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Wang K, Li T, Yu F, Zheng Y, Wong WK, Kwong DWJ, Li Z. Fluorescent Properties of the Amidinophenylporphyrins Interacting with DNA. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201100564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Costa L, Tomé JPC, Neves MGPMS, Tomé AC, Cavaleiro JAS, Faustino MAF, Cunha Â, Gomes NCM, Almeida A. Evaluation of resistance development and viability recovery by a non-enveloped virus after repeated cycles of aPDT. Antiviral Res 2011; 91:278-82. [PMID: 21722673 DOI: 10.1016/j.antiviral.2011.06.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 05/16/2011] [Accepted: 06/14/2011] [Indexed: 01/22/2023]
Abstract
Nowadays, the emergence of drug resistant microorganisms is a public health concern. The antimicrobial photodynamic therapy (aPDT) has an efficient action against a wide range of microorganisms and can be viewed as an alternative approach for treating microbial infections. The aim of this study was to determine if a model target virus (T4-like bacteriophage), in the presence of the tricationic porphyrin 5,10,15-tris(1-methylpyridinium-4-yl)-20-(pentafluorophenyl)porphyrin tri-iodide (Tri-Py(+)-Me-PF), can develop resistance to aPDT and recover its viability after photodynamic treatments. To assess the development of aPDT resistance after repeated treatments, a suspension of T4-like bacteriophage was irradiated with white light (40 Wm(-2)) for 120 min in the presence of 5.0 μM of Tri-Py(+)-Me-PF (99.99% of inactivation) and new phage suspensions were produced from the surviving phages, after each cycle of light exposure. The procedure was repeated ten times. To evaluate the recovery of viral viability after photoinactivation, a suspension of T4-like bacteriophage was irradiated with white light for 120 min in the presence of 5.0 μM of Tri-Py(+)-Me-PF on five consecutive days. In each day, an aliquot of the irradiated suspension was plated and the number of lysis plaques was counted after 24, 48, 72, 96 and 120 h of dark incubation at 37 °C. The profile of bacteriophage photoinactivation did not change after ten consecutive cycles and no recovery of viability was detected after five accumulated cycles of photodynamic treatment. The results suggest that aPDT represents a valuable and promising alternative therapy to treat viral infections, overcoming the problem of microbial resistance.
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Affiliation(s)
- Liliana Costa
- CESAM and Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
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16
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Syntheses and DNA binding of new cationic porphyrin–tetrapeptide conjugates. Biophys Chem 2011; 155:36-44. [DOI: 10.1016/j.bpc.2011.02.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2011] [Revised: 02/20/2011] [Accepted: 02/21/2011] [Indexed: 11/30/2022]
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17
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Costa L, Carvalho CMB, Faustino MAF, Neves MGPMS, Tomé JPC, Tomé AC, Cavaleiro JAS, Cunha A, Almeida A. Sewage bacteriophage inactivation by cationic porphyrins: influence of light parameters. Photochem Photobiol Sci 2010; 9:1126-33. [PMID: 20563346 DOI: 10.1039/c0pp00051e] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photodynamic therapy has been used to inactivate microorganisms through the use of targeted photosensitizers. Although the photoinactivation of microorganisms has already been studied under different conditions, a systematic evaluation of irradiation characteristics is still limited. The goal of this study was to test how the light dose, fluence rate and irradiation source affect the viral photoinactivation of a T4-like sewage bacteriophage. The experiments were carried out using white PAR light delivered by fluorescent PAR lamps (40 W m(-2)), sun light (600 W m(-2)) and an halogen lamp (40-1690 W m(-2)). Phage suspensions and two cationic photosensitizers (Tetra-Py(+)-Me, Tri-Py(+)-Me-PF) at concentrations of 0.5, 1.0 and 5.0 microM were used. The results showed that the efficacy of the bacteriophage photoinactivation is correlated not only with the sensitizer and its concentration but also with the light source, energy dose and fluence rate applied. Both photosensitizers at 5.0 microM were able to inactivate the T4-like phage to the limit of detection for each light source and fluence rate. However, depending of the light parameters, different irradiation times are required. The efficiency of photoinactivation is dependent on the spectral emission distribution of the light sources used. Considering the same light source and a fixed light dose applied at different fluence rates, phage inactivation was significantly higher when low fluence rates were used. In this way, the light source, fluence rate and total light dose play an important role in the effectiveness of the antimicrobial photodynamic therapy and should always be considered when establishing an optimal antimicrobial protocol.
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Affiliation(s)
- Liliana Costa
- CESAM and Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
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Karakostas N, Schaming D, Sorgues S, Lobstein S, Gisselbrecht JP, Giraudeau A, Lampre I, Ruhlmann L. Photophysical, electro- and spectroelectro-chemical properties of the nonplanar porphyrin [ZnOEP(Py)44+,4Cl−] in aqueous media. J Photochem Photobiol A Chem 2010. [DOI: 10.1016/j.jphotochem.2010.04.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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19
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Wei C, Wang J, Zhang M. Spectroscopic study on the binding of porphyrins to (G(4)T(4)G(4))4 parallel G-quadruplex. Biophys Chem 2010; 148:51-5. [PMID: 20202738 DOI: 10.1016/j.bpc.2010.02.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2009] [Revised: 01/19/2010] [Accepted: 02/10/2010] [Indexed: 11/19/2022]
Abstract
The binding mode and stoichiometry of the cationic porphyrin TMPyP4 to G-quadruplex structure are still controversial to date, mainly due to the intricate polymorphism of G-rich sequences in the different conditions of solution. Here in the presence of the molecular crowding agent PEG, the binding interaction of TMPyP4 and another porphyrin derivative TPrPyP4 with four-stranded parallel (G(4)T(4)G(4))4 G-quadruplex was studied systematically using circular dichroism, visible absorption titration, and steady-state and time-resolved fluorescence spectroscopies. The results show that each (G(4)T(4)G(4))4 molecule is able to bind four TMPyP4 or TPrPyP4 molecules. Two types of independent and nonequivalent binding sites with the higher and lower binding affinity are confirmed, and the stronger and weaker binding constants are 2.74 x 10(8) and 8.21 x 10(5)M(-1) for (G(4)T(4)G(4))4-TMPyP4, 2.05 x 10(8) and 1.05 x 10(6)M(-1) for (G(4)T(4)G(4))4-TPrPyP4, respectively. The two porphyrin molecules stack on the two ends of G-quadruplex with the higher binding affinity, another two porphyrins bind weakly to the two external grooves.
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Affiliation(s)
- Chunying Wei
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.
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21
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Zhou B, Zhang Z, Zhang Y, Li R, Xiao Q, Liu Y, Li Z. Binding of cationic porphyrin to human serum albumin studied using comprehensive spectroscopic methods. J Pharm Sci 2009; 98:105-13. [PMID: 18464274 DOI: 10.1002/jps.21413] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The interaction between cationic porphyrin, a potential valuable anti-tumor and antibiotic drug, and human serum albumin (HSA) was investigated using spectroscopy methods. The binding constants were obtained using fluorescence quenching method (K(SV) = (3.24 +/- 0.29) x 10(4) M(-1)) and surface plasmon resonance (SPR) spectroscopy (K(A) = (6.287 +/- 0.407) x 10(4) M(-1)). The association rate constant (k(a) = 1622 +/- 72.9 M(-1) s(-1)) and dissociation rate constant (K(d) = 0.02589 +/- 0.0024 s(-1)) of the binding process were also calculated. Compared with the two results, it was known that one of the binding sites was near the tryptophan residue and also there existed other binding sites. The Fourier transform infrared (FT-IR) spectroscopy and circular dichroism (CD) spectroscopy indicated that the confirmation of HSA was nearly not affected with the addition of porphyrin.
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Affiliation(s)
- Bo Zhou
- State Key Laboratory of Virology, Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
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The binding mode of porphyrins with cation side arms to (TG4T)4 G-quadruplex: Spectroscopic evidence. Biophys Chem 2009; 143:79-84. [DOI: 10.1016/j.bpc.2009.04.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Revised: 04/09/2009] [Accepted: 04/09/2009] [Indexed: 11/16/2022]
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23
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Role of structure-proteins in the porphyrin-DNA interaction. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2009; 96:207-15. [PMID: 19604705 DOI: 10.1016/j.jphotobiol.2009.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 06/17/2009] [Accepted: 06/18/2009] [Indexed: 11/22/2022]
Abstract
We studied the complexation of meso-tetrakis(4-N-methylpyridyl)porphyrin (TMPyP) with HeLa nucleosomes and compared it to our earlier results on T7 phage nucleoprotein complex (NP) and isolated DNA. To identify binding modes and relative concentrations of the bound TMPyP forms, the porphyrin absorption spectra were analyzed at various base pair/porphyrin ratios. Spectral decomposition and circular dichroism measurements proved that the two main binding modes of TMPyP, i.e., external binding and intercalation occur also in the nucleosomes. The DNA superstructure maintained by the proteins decreases its accessibility for TMPyP similarly in both nucleoproteins. A difference is observed between the partitioning of the two binding modes: in the case of nucleosome the ratio of intercalation to groove-binding is changed from 60/40 to 40/60 as determined for T7 NP and for isolated DNA-s. Using UV and CD melting studies, we revealed that TMPyP destabilizes the DNA-protein interaction in the nucleosomes but not in the T7 phage. Lastly, photoinduced reaction of bound TMPyP caused alterations in DNA structures and DNA-protein interactions within both nucleoprotein complexes; the nucleosomes were found to be more sensitive to the photoreaction.
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Wei C, Jia G, Zhou J, Han G, Li C. Evidence for the binding mode of porphyrins to G-quadruplex DNA. Phys Chem Chem Phys 2009; 11:4025-32. [PMID: 19440632 DOI: 10.1039/b901027k] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Interactions of porphyrin derivatives 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)-21H,23H-porphyrin (TMPyP4) and 5,10,15,20-tetrakis(N-propylpyridinium-4-yl)-21H,23H-porphyrin (TPrPyP4) with human telomeric AG(3)(T(2)AG(3))(3) G-quadruplex DNAs in 150 mM K(+)-containing buffer in the presence or absence of 40% molecular crowding agent poly(ethylene glycol) (PEG 200) were studied by absorption titration fitting and time-resolved fluorescence spectroscopy. The results show that two TMPyP4 (or TPrPyP4) molecules bind to antiparallel/parallel hybrid structure of AG(3)(T(2)AG(3))(3) G-quadruplex by end-stacking and outside groove binding modes in the absence of PEG. Interestingly, in the presence of PEG one porphyrin molecule is stacked between two parallel AG(3)(T(2)AG(3))(3) G- quadruplexes to form a sandwich structure, another porphyrin molecule is bound to the groove of the G-quadruplex. The interactions of TMPyP4 with different structures of AG(3)(T(2)AG(3))(3) G-quadruplex are non cooperative, the binding constants of two independent binding sites are 1.07 x 10(6) and 4.42 x 10(8) M(-1) for an antiparallel/parallel hybrid structure of AG(3)(T(2)AG(3))(3), 8.67 x 10(5) and 2.26 x 10(8) M(-1) for parallel-stranded AG(3)(T(2)AG(3))(3) G-quadruplex. Conversely, the two binding sites are cooperative for TPrPyP4, the apparent association constants are 5.58 x 10(6) and 1.24 x 10(7) M(-1) for parallel-stranded and antiparallel/parallel hybrid structures of AG(3)(T(2)AG(3))(3) G-quadruplex, respectively.
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Affiliation(s)
- Chunying Wei
- Institute of Molecular Science, Shanxi University, Taiyuan, 030006, China.
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25
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Lu G, Zhang X, Cai X, Jiang J. Tuning the morphology of self-assembled nanostructures of amphiphilic tetra(p-hydroxyphenyl)porphyrins with hydrogen bonding and metal–ligand coordination bonding. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b820127g] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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27
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Kakiuchi T, Ito F, Nagamura T. Time-Resolved Studies of Energy Transfer from meso-Tetrakis(N-methylpyridinium-4-yl)- porphyrin to 3,3‘-Diethyl-2,2‘-thiatricarbocyanine Iodide along Deoxyribonucleic Acid Chain. J Phys Chem B 2008; 112:3931-7. [DOI: 10.1021/jp7107347] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshifumi Kakiuchi
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Fuyuki Ito
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Toshihiko Nagamura
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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Costa L, Alves E, Carvalho CMB, Tomé JPC, Faustino MAF, Neves MGPMS, Tomé AC, Cavaleiro JAS, Cunha A, Almeida A. Sewage bacteriophage photoinactivation by cationic porphyrins: a study of charge effect. Photochem Photobiol Sci 2008; 7:415-22. [PMID: 18385883 DOI: 10.1039/b712749a] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photodynamic therapy has been used to inactivate microorganisms through the use of targeted photosensitizers. Recently the inactivation of bacteria in residual waters has been reported, but nothing is known about photoinactivation of environmental bacteriophages, which are often used as indicators of human enteric viruses. In this study we tested the effect of six cationic porphyrin derivatives with two to four charges on the photoinactivation of a sewage bacteriophage. A phage suspension of 5 x 10(7) PFU mL(-1) was exposed to white light (40 W m(-2)), during 270 min, at three photosensitizer concentrations (0.5, 1.0 and 5.0 microM). Tetra- and tricationic porphyrins inactivated the T4-like sewage phage to the limits of detection, but dicationic porphyrins did not lead to a significant decrease in phage viability. At the highest photosensitizer concentration (5.0 microM), the phage was completely inactivated (>99.9999% of inactivation, reduction of 7.2 log) after 270 min by the tetracationic porphyrin. Two of the tricationic derivatives also led to phage inactivation to the limit of detection. The rate of bacteriophage photoinactivation and the efficiency of the photosensitizer appeared to vary with the charge and with the substituents in the meso-positions of the porphyrin macrocycle. Tetra- and tricationic porphyrins can, therefore, be used as a new method for inactivating sewage bacteriophages that are frequently used as human enteric virus indicators. The complete inactivation of viruses with low light intensity means that this methodology can be used even on cloudy days and during winter, opening the possibility to develop new technologies for wastewater treatment.
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Affiliation(s)
- Liliana Costa
- CESAM, University of Aveiro, 3810-193, Aveiro, Portugal
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Affiliation(s)
- Guy A Hembury
- Japan Science and Technology Agency and Department of Applied Chemistry, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
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30
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Zupán K, Egyeki M, Tóth K, Fekete A, Herényi L, Módos K, Csík G. Comparison of the efficiency and the specificity of DNA-bound and free cationic porphyrin in photodynamic virus inactivation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2007; 90:105-12. [PMID: 18222092 DOI: 10.1016/j.jphotobiol.2007.11.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2007] [Revised: 11/28/2007] [Accepted: 11/28/2007] [Indexed: 10/22/2022]
Abstract
The risk of transmitting infections by blood transfusion has been substantially reduced. However, alternative methods for inactivation of pathogens in blood and its components are needed. Application of photoactivated cationic porphyrins can offer an approach to remove non-enveloped viruses from aqueous media. Here we tested the virus inactivation capability of meso-Tetrakis(4-N-methylpyridyl)porphyrin (TMPyP) and meso-Tri-(4-N-methylpyridyl)monophenylporphyrin (TMPyMPP) in the dark and upon irradiation. T7 bacteriophage, as a surrogate on non-enveloped viruses was selected as a test system. TMPyP and TMPyMPP reduce the viability of T7 phage already in the dark, which can be explained by their selective binding to nucleic acid. Both compounds proved to be efficient photosensitizers of virus inactivation. The binding of porphyrin to phage DNA was not a prerequisite of phage photosensitization, moreover, photoinactivation was more efficiently induced by free than by DNA bound porphyrin. As optical melting studies and agarose gel electrophoresis of T7 nucleoprotein revealed, photoreactions of TMPyP and TMPyMPP affect the structural integrity of DNA and also of viral proteins, despite their selective DNA binding.
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Affiliation(s)
- Kristóf Zupán
- Institute of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary.
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31
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Hou AX, Xue Z, Liu Y, Qu SS, Wong WK. Microcalorimetric and Spectroscopic Investigation of the Antibacterial Properties of Cationic Ytterbium(III)–Porphyrin Complexes Lacking Charged Peripheral Groups. Chem Biodivers 2007; 4:2889-99. [DOI: 10.1002/cbdv.200790238] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Xue Z, Hou AX, Kwong DWJ, Wong WK. Novel ebselen–porphyrin conjugates: Synthesis and nucleic acid interaction study. Bioorg Med Chem Lett 2007; 17:4266-70. [PMID: 17555963 DOI: 10.1016/j.bmcl.2007.05.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2007] [Revised: 04/10/2007] [Accepted: 05/10/2007] [Indexed: 11/18/2022]
Abstract
Novel porphyrins bearing ebselen (2-phenyl-1,2-benzisoselenazol-3[2H]-one) moiety were synthesized and characterized. Their interactions with herring sperm DNA were studied by means of UV-visible, fluorescence, circular dichroism spectroscopy, and gel electrophoresis.
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Affiliation(s)
- Zhi Xue
- Department of Chemistry, Wuhan University, Wuhan 430072, PR China
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Ishikawa Y, Yamakawa N, Uno T. Synthetic control of interchromophoric interaction in cationic bis-porphyrins toward efficient DNA photocleavage and singlet oxygen production in aqueous solution. Bioorg Med Chem 2007; 15:5230-8. [PMID: 17513112 DOI: 10.1016/j.bmc.2007.05.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Revised: 05/03/2007] [Accepted: 05/04/2007] [Indexed: 11/21/2022]
Abstract
We have synthesized cationic bis-porphyrins and their zinc(II) complexes with two TMPyP-like chromophores bridged by p- or m-xylylenediamine to develop effective DNA photocleaving agents. The xylylene linkers and zinc ion were introduced to control interchromophoric interaction that should be involved in photosensitization of the cationic bis-porphyrins. The molar absorptivities of all the bis-porphyrins in aqueous solution remained unchanged over a wide range of concentrations, indicating the absence of self-aggregation property. In particular, the molar absorptivity of the zinc(II) complex of the p-xylylenediamine-linked bis-porphyrin in aqueous solution was 2.0 times as large as that of unichromophoric ZnTMPyP, suggesting the absence of both intermolecular and intramolecular interchromophoric interaction. The metal-free p-xylylenediamine-linked bis-porphyrin showed the more efficient conversion ability of supercoiled to nicked circular pUC18 plasmid DNA by photosensitization than the metal-free m-xylylenediamine-linked one. Furthermore, the zinc complexes of the bis-porphyrins exhibited the more potent DNA photocleavage than did the metal-free bis-porphyrins. Singlet oxygen productivity of the four cationic bis-porphyrins was determined by measuring the decomposition rate of 1,3-diphenylisobenzofuran. The amount of singlet oxygen generated by photosensitization of the zinc(II) complex of the p-xylylenediamine-linked bis-porphyrin in aqueous solution was 2.1 times as large as ZnTMPyP, indicating the full singlet oxygen productivity. A significant relationship between the DNA photocleaving abilities and the singlet oxygen productivities of the cationic porphyrins in aqueous solution was found. Hence, the degree of the intramolecular interchromophoric interaction, the DNA photocleaving ability, and the singlet oxygen productivity of the cationic bis-porphyrins in aqueous solution were successfully controlled by means of the introduction of the appropriate linker and metal ion.
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Affiliation(s)
- Yoshinobu Ishikawa
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Kumamoto, Japan.
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Van Caemelbecke E, Derbin A, Hambright P, Garcia R, Doukkali A, Saoiabi A, Ohkubo K, Fukuzumi S, Kadish KM. Electrochemistry of [(TMpyP)MII]4+(X-)4 (X- = Cl- or BPh4-) and [(TMpyP)MIIICl]4+(Cl-)4 in N,N-Dimethylformamide Where M Is One of 15 Different Metal Ions. Inorg Chem 2005; 44:3789-98. [PMID: 15907103 DOI: 10.1021/ic048820q] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The electrochemistry of 16 different water-soluble porphyrins of the type [(TMpyP)M(II)]4+ (X-)4 or [(TMpyP)M(III)Cl]4+ (Cl-)4 is reported in nonaqueous media where TMpyP is the dianion of meso-tetrakis(N-methylpyridiniumyl)porphyrin and X- = Cl- or BPh4-. These studies were carried out to examine the effect of the metal ion and porphyrin counterion (X-) on the electrochemical properties of the TMpyP complexes with a special emphasis being given to the overall number of electrons added and the number of electrode processes upon reduction. All of the investigated compounds with electroinactive central metal ions undergo an overall addition of six electrons. This occurs for most compounds via three two-electron-transfer steps, but more than three processes are observed for porphyrins having metal ions with a low electronegativity (e.g., Cd(II)). The first reduction of each porphyrin having an M(II) ion or an electroinactive M(III) ion yields a porphyrin dianion which is characterized by an intense band located close to 800 nm, and this reversible reduction is followed by further reductions of the 1-methyl-4-pyridyl groups at more negative potentials. Four of the compounds with electroactive central metal ions, [(TMpyP)M(III)Cl]4+(Cl-)4 (M = Co, Fe, Mn, or Au), undergo an additional reversible M(III)/M(II) process prior to reactions involving the porphyrin pi-ring system and the 1-methyl-4-pyridyl substituents.
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Affiliation(s)
- E Van Caemelbecke
- Department of Chemistry, University of Houston, Houston, Texas 77204-5641, USA
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