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Weilbeer C, Jay D, Donnelly JC, Gentile F, Karimi-Busheri F, Yang X, Mani RS, Yu Y, Elmenoufy AH, Barakat KH, Tuszynski JA, Weinfeld M, West FG. Modulation of ERCC1-XPF Heterodimerization Inhibition via Structural Modification of Small Molecule Inhibitor Side-Chains. Front Oncol 2022; 12:819172. [PMID: 35372043 PMCID: PMC8968952 DOI: 10.3389/fonc.2022.819172] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Accepted: 01/28/2022] [Indexed: 12/02/2022] Open
Abstract
Inhibition of DNA repair enzymes is an attractive target for increasing the efficacy of DNA damaging chemotherapies. The ERCC1-XPF heterodimer is a key endonuclease in numerous single and double strand break repair processes, and inhibition of the heterodimerization has previously been shown to sensitize cancer cells to DNA damage. In this work, the previously reported ERCC1-XPF inhibitor 4 was used as the starting point for an in silico study of further modifications of the piperazine side-chain. A selection of the best scoring hits from the in silico screen were synthesized using a late stage functionalization strategy which should allow for further iterations of this class of inhibitors to be readily synthesized. Of the synthesized compounds, compound 6 performed the best in the in vitro fluorescence based endonuclease assay. The success of compound 6 in inhibiting ERCC1-XPF endonuclease activity in vitro translated well to cell-based assays investigating the inhibition of nucleotide excision repair and disruption of heterodimerization. Subsequently compound 6 was shown to sensitize HCT-116 cancer cells to treatment with UVC, cyclophosphamide, and ionizing radiation. This work serves as an important step towards the synergistic use of DNA repair inhibitors with chemotherapeutic drugs.
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Affiliation(s)
- Claudia Weilbeer
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
| | - David Jay
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, Canada
| | - James C. Donnelly
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
| | | | | | - Xiaoyan Yang
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, Canada
| | - Rajam S. Mani
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, Canada
| | - Yaping Yu
- Centre for Genome Engineering, University of Calgary, Calgary, AB, Canada
| | - Ahmed H. Elmenoufy
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
- Department of Pharmaceutical Chemistry, College of Pharmacy, Misr University for Science and Technology, 6th of October City, Egypt
| | - Khaled H. Barakat
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB, Canada
| | - Jack A. Tuszynski
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, Canada
- Department of Physics, University of Alberta, Edmonton, AB, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB, Canada
| | - Michael Weinfeld
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB, Canada
- *Correspondence: Michael Weinfeld, ; Frederick G. West,
| | - Frederick G. West
- Department of Chemistry, University of Alberta, Edmonton, AB, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, AB, Canada
- *Correspondence: Michael Weinfeld, ; Frederick G. West,
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Szaflik JP, Janik-Papis K, Synowiec E, Ksiazek D, Zaras M, Wozniak K, Szaflik J, Blasiak J. DNA damage and repair in age-related macular degeneration. Mutat Res 2009; 669:169-76. [PMID: 19559717 DOI: 10.1016/j.mrfmmm.2009.06.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2009] [Revised: 05/26/2009] [Accepted: 06/18/2009] [Indexed: 05/18/2023]
Abstract
Age-related macular degeneration (AMD) is a retinal degenerative disease that is the main cause of vision loss in individuals over the age of 55 in the Western world. Clinically relevant AMD results from damage to the retinal pigment epithelial (RPE) cells thought to be mainly caused by oxidative stress. The stress also affects the DNA of RPE cells, which promotes genome instability in these cells. These effects may coincide with the decrease in the efficacy of DNA repair with age. Therefore individuals with DNA repair impaired more than average for a given age may be more susceptible to AMD if oxidative stress affects their RPE cells. This may be helpful in AMD risk assessment. In the present work we determined the level of basal (measured in the alkaline comet assay) endogenous and endogenous oxidative DNA damage, the susceptibility to exogenous mutagens and the efficacy of DNA repair in lymphocytes of 100 AMD patients and 110 age-matched individuals without visual disturbances. The cells taken from AMD patients displayed a higher extent of basal endogenous DNA damage without differences between patients of dry and wet forms of the disease. DNA double-strand breaks did not contribute to the observed DNA damage as checked by the neutral comet assay and pulsed field gel electrophoresis. The extent of oxidative modification to DNA bases was greater in AMD patients than in the controls, as probed by DNA repair enzymes NTH1 and Fpg. Lymphocytes from AMD patients displayed a higher sensitivity to hydrogen peroxide and UV radiation and repaired lesions induced by these factors less effectively than the cells from the control individuals. We postulate that the impaired efficacy of DNA repair may combine with enhanced sensitivity of RPE cells to blue and UV lights, contributing to the pathogenesis of AMD.
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Affiliation(s)
- Jacek P Szaflik
- Department of Ophthalmology, Medical University of Warsaw and Samodzielny Publiczny Szpital Okulistyczny, Warsaw, Poland
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Shackelford RE, Kaufmann WK, Paules RS. Cell cycle control, checkpoint mechanisms, and genotoxic stress. ENVIRONMENTAL HEALTH PERSPECTIVES 1999; 107 Suppl 1:5-24. [PMID: 10229703 PMCID: PMC1566366 DOI: 10.1289/ehp.99107s15] [Citation(s) in RCA: 140] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The ability of cells to maintain genomic integrity is vital for cell survival and proliferation. Lack of fidelity in DNA replication and maintenance can result in deleterious mutations leading to cell death or, in multicellular organisms, cancer. The purpose of this review is to discuss the known signal transduction pathways that regulate cell cycle progression and the mechanisms cells employ to insure DNA stability in the face of genotoxic stress. In particular, we focus on mammalian cell cycle checkpoint functions, their role in maintaining DNA stability during the cell cycle following exposure to genotoxic agents, and the gene products that act in checkpoint function signal transduction cascades. Key transitions in the cell cycle are regulated by the activities of various protein kinase complexes composed of cyclin and cyclin-dependent kinase (Cdk) molecules. Surveillance control mechanisms that check to ensure proper completion of early events and cellular integrity before initiation of subsequent events in cell cycle progression are referred to as cell cycle checkpoints and can generate a transient delay that provides the cell more time to repair damage before progressing to the next phase of the cycle. A variety of cellular responses are elicited that function in checkpoint signaling to inhibit cyclin/Cdk activities. These responses include the p53-dependent and p53-independent induction of Cdk inhibitors and the p53-independent inhibitory phosphorylation of Cdk molecules themselves. Eliciting proper G1, S, and G2 checkpoint responses to double-strand DNA breaks requires the function of the Ataxia telangiectasia mutated gene product. Several human heritable cancer-prone syndromes known to alter DNA stability have been found to have defects in checkpoint surveillance pathways. Exposures to several common sources of genotoxic stress, including oxidative stress, ionizing radiation, UV radiation, and the genotoxic compound benzo[a]pyrene, elicit cell cycle checkpoint responses that show both similarities and differences in their molecular signaling.
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Affiliation(s)
- R E Shackelford
- Growth Control and Cancer Group, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
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Kojima H, Spataru N, Kawata Y, Yano SI, Vartires I. Long-Ranged Electron Interaction between Carboxytetramethylrhodamine and Fluoresceinisothiocyanate Bound Covalently to DNA, As Evidenced by Fluorescence Quenching. J Phys Chem B 1998. [DOI: 10.1021/jp982844z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroyuki Kojima
- Osaka National Research Institute, Agency of Industrial Science and Technology, Midorigaoka 1-8-31, Ikeda-shi, Osaka 563, Japan
| | - Nicolae Spataru
- Osaka National Research Institute, Agency of Industrial Science and Technology, Midorigaoka 1-8-31, Ikeda-shi, Osaka 563, Japan
| | - Yoshikazu Kawata
- Osaka National Research Institute, Agency of Industrial Science and Technology, Midorigaoka 1-8-31, Ikeda-shi, Osaka 563, Japan
| | - Sin-ichi Yano
- Osaka National Research Institute, Agency of Industrial Science and Technology, Midorigaoka 1-8-31, Ikeda-shi, Osaka 563, Japan
| | - Iuliana Vartires
- Osaka National Research Institute, Agency of Industrial Science and Technology, Midorigaoka 1-8-31, Ikeda-shi, Osaka 563, Japan
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Zavilgelsky GB, Abilev SK, Sukhodolets VV, Ahmad SI. Isolation and analysis of UV and radio-resistant bacteria from Chernobyl. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 1998; 43:152-7. [PMID: 9679315 DOI: 10.1016/s1011-1344(98)00099-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The accident at the Chernobyl nuclear power station in 1986 led to the dispersal of large amounts of a variety of radioactive materials, most importantly uranium, plutonium, 137Cs, 131I and 90Sr, over very large distances estimated to reach as far as Sweden, Norway, Turkey and possibly the USA. As a consequence, the soil on which the radioactive materials fell was contaminated and the degree of contamination varied with distance from the station, the direction and strength of the wind and the amount of atmospheric scavenging by rainfall at that time. Some of the radioactive materials have left a significant impact on mankind in the form of chromosomal aberrations including trisomy, various forms of cancers and death, whilst others are still in the ground where they will remain for a prolonged period to continue to exert their effects. Likewise, microbes living in the soil and exposed to radioactive materials may have been affected in a number of ways; some perished, and others survived due to the acquisition of advantageous mutation. Six years after the accident, soil samples contaminated with different levels of radioactivity were obtained from five regions within a 30 km radius of the nuclear power plant. From these soil samples spore-forming bacilli were isolated, quantified, identified and tested for resistance to X-rays, UVC and 4-nitroquinoline 1-oxide (4NQO). As a control, spore-forming bacilli were obtained from 'Zeleny mys' (an area 50 km south-east of the power station and emitting basal levels of radioactivity). A mutant of Escherichia coli hyper-resistant to a variety of DNA-damaging agents and its parent strain were also included in the study. Analysis of results reveals that a proportion of isolates of the same species from near the power station and the E. coli mutant SA236 were more resistant to X-rays, UVC and 4NQO compared with isolates from the control site and the E. coli parent strain, KL14, respectively.
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Affiliation(s)
- G B Zavilgelsky
- State Research Institute of Genetics and Breeding of Industrial Micro-organisms, Moscow, Russia
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Kim J, Chubatsu LS, Admon A, Stahl J, Fellous R, Linn S. Implication of mammalian ribosomal protein S3 in the processing of DNA damage. J Biol Chem 1995; 270:13620-9. [PMID: 7775413 DOI: 10.1074/jbc.270.23.13620] [Citation(s) in RCA: 153] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A human apurinic/apyrimidinic endonuclease activity, called AP endonuclease I, is missing from or altered specifically in cells cultured from Xeroderma pigmentosum group-D individuals (XP-D cells) (Kuhnlein, U., Lee, B., Penhoet, E. E., and Linn, S. (1978) Nucleic Acids Res. 5,951-960). We have now observed that another nuclease activity, UV endonuclease III, is similarly not detected in XP-D cells and is inseparable from the AP endonuclease I activity. This activity preferentially cleaves the phosphodiester backbone of heavily ultraviolet-irradiated DNA at unknown lesions as well as at one of the phosphodiester bonds within a cyclobutane pyrimidine dimer. The nuclease activities have been purified from mouse cells to yield a peptide of M(r) = 32,000, whose sequence indicates identity with ribosomal protein S3. The nuclease activities all cross-react with immunopurified antibody directed against authentic rat ribosomal protein S3, and, upon expression in Escherichia coli of a cloned rat cDNA for ribosomal protein S3, each of the activities was recovered and was indistinguishable from those of the mammalian UV endonuclease III. Moreover, the protein expressed in E. coli and its activities cross-react with the rat protein antibody. Ribosomal protein S3 contains a potential nuclear localization signal, and the protein isolated as a nuclease also has a glycosylation pattern consistent with a nuclear localization as determined by lectin binding. The unexpected role of a ribosomal protein in DNA damage processing and the unexplained inability to detect the nuclease activities in extracts from XP-D cells are discussed.
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Affiliation(s)
- J Kim
- Department of Molecular and Cell Biology, University of California, Berkeley 94720-3202, USA
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7
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Gilbert A, Heritage TW, Isaacs NS. The influence of pressure on arene–ethene photocycloaddition reactions. ACTA ACUST UNITED AC 1992. [DOI: 10.1039/p29920001141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Bielanski A, Hare WC. Investigation of some antimicrobial procedures on the in vitro development of early murine embryos aimed toward developing methods for the disinfection of mammalian embryos prior to transfer. JOURNAL OF IN VITRO FERTILIZATION AND EMBRYO TRANSFER : IVF 1991; 8:24-32. [PMID: 1826723 DOI: 10.1007/bf01131587] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Eight-cell, zona pellucida-intact mouse embryos were exposed to the following substances or procedures that have been reported to have germicidal effects to determine if the embryos would survive and develop under in vitro conditions: the photosensitive substances hematoporphyrin, hematoporphyrin derivative, 8-methoxypsoralen, 4,5',8-trimethylpsoralen, and thiopyronine; the enzymes lipase (0.5%), phospholipase C (2 U/ml), chymotrypsin (0.5%), and trypsin (0.5%); pH 5.0; and helium/neon laser light, visible light, ultraviolet A light, and ultraviolet C light. Under the conditions used, embryos were not adversely affected by hematoporphyrin and/or helium/neon laser light; methoxypsoralen and/or ultraviolet A light; lipase; trypsin; pH 5.0 for 20 min; and visible light. Variable results were obtained from hematoporphyrin derivative with laser light. Thiopyronine, trimethylpsoralen in combination with ultraviolet A light, and ultraviolet C light killed embryos, and chymotrypsin and phospholipase C were harmful at 10- and 15-min exposure times, respectively.
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Affiliation(s)
- A Bielanski
- Animal Diseases Research Institute, Agriculture Canada, Nepean, Ontario
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9
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Koning MG, van Soest JJ, Kaptein R. NMR studies of bipyrimidine cyclobutane photodimers. EUROPEAN JOURNAL OF BIOCHEMISTRY 1991; 195:29-40. [PMID: 1991475 DOI: 10.1111/j.1432-1033.1991.tb15672.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cyclobutane-type photodimers of dinucleoside monophosphates dCpdT, dTpdC and dTpdT were prepared by ultraviolet irradiation in the presence of acetophenone as photosensitizer. The cytosine-containing derivatives were found to deaminate forming uracil products. Using one- and two-dimensional NMR, the photoproducts were characterized as cis-syn and trans-syn cyclobutane photodimers. On the basis of NOE data the structures of the cis-syn and trans-syn products of dUpdT were determined using distance-geometry and restrained-energy-minimization methods. The cis-syn structures showed (high-ANTI/SYN)/high-ANTI glycosidic linkages while the trans-syn structures were in the SYN-ANTI region. The backbone conformations of both structures were in fair agreement with the coupling-constant-data. The trans-syn structures were found to be very rigid and similar in all three products. For the three cis-syn structures more conformational freedom and more variation among the three structures was observed.
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Affiliation(s)
- M G Koning
- Department of Chemistry, University of Utrecht, The Netherlands
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10
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Fujita H, Matsuo I. UV-A induced DNA nicking activities of skin photosensitive drugs: phenothiazines, benzothiadiazines and afloqualone. Chem Biol Interact 1988; 66:27-36. [PMID: 3383286 DOI: 10.1016/0009-2797(88)90038-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Plasmid pBR 322 was subjected to UV-A irradiation in the presence of photosensitive drugs, i.e., phenothiazines [chlorpromazine hydrochloride (CPZ), promethazine hydrochloride (PMZ) and mequitazine (MQZ)], benzothiadiazines [penflutizide (PFZ), hydrochlorothiazide (HCT) and methyclothiazide (MCT)] and afloqualone (AQ). The distribution of the closed-circular and the open-circular form of the plasmid DNA was analyzed by means of neutral agarose gel electrophoresis. All the drugs used induced more or less DNA nicking to yield the open-circular form. The nicking activities of the phenothiazines were in the order: CPZ greater than PMZ greater than MQZ. CPZ elicited extensive degradation of the DNA by photosensitization. The nicking activities of the benzothiadiazines and AQ were much weaker than CPZ and PMZ.
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Affiliation(s)
- H Fujita
- Department of Molecular Biology, Tokai University School of Medicine, Kanagawa-ken, Japan
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11
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Görner H, Stradowski C, Schulte-Frohlinde D. Photoreactions of tris(2,2'-bipyridyl)-ruthenium(II) with peroxydisulfate in deoxygenated aqueous solution in the presence of nucleic acid components, polynucleotides, and DNA. Photochem Photobiol 1988; 47:15-29. [PMID: 3344280 DOI: 10.1111/j.1751-1097.1988.tb02691.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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12
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Ehrlich W, Mangir M, Nothelfer R, Baumgärtel H, Lochmann ER. Thiopyronine-sensitized photodynamic effect on cell growth, RNA and DNA synthesis of Chinese hamster ovary cells. INTERNATIONAL JOURNAL OF RADIATION BIOLOGY AND RELATED STUDIES IN PHYSICS, CHEMISTRY, AND MEDICINE 1987; 52:207-12. [PMID: 2440823 DOI: 10.1080/09553008714551671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
After treatment of Chinese hamster ovary (CHO) cells with very low concentrations of thiopyronine (TP; 1 microgram/ml) and visible light, a delay in growth of cell cultures (prolongation of the lag phase] was observed. The lengthened lag phase, however, was followed by normal growth of the cells. The length of the lag period is dependent on the irradiation dose applied. A similar effect on DNA and RNA synthesis could be seen after photodynamic treatment with TP in CHO cells: the maxima of RNA and DNA synthesis occur later but are not significantly reduced after treatment with low concentrations of TP and irradiation with visible light. This result is further evidence that the photodynamic effect with TP does not involve attack on nuclear DNA in eukaryotic cells.
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Eder H. Ein Fluorescenzphänomen am Nucleoprotein lebender Zellen unter Belichtung. Acta Histochem 1986. [DOI: 10.1016/s0065-1281(86)80102-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Marko J, Vermeersch G, Febvay-Garot N, Lablache-Combier A. Photo-CIDNP in nucleic acid bases and their nucleotides induced by chlorpromazine and analogs. Photochem Photobiol 1985; 42:213-21. [PMID: 4059361 DOI: 10.1111/j.1751-1097.1985.tb08934.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Cadet J, Voituriez L, Grand A, Hruska FE, Vigny P, Kan LS. Recent aspects of the photochemistry of nucleic acids and related model compounds. Biochimie 1985; 67:277-92. [PMID: 3929843 DOI: 10.1016/s0300-9084(85)80070-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This survey focuses on recent developments in the far ultraviolet photochemistry of nucleic acids and related model compounds. The photoproducts discussed are the cyclobutidipyrimidines, the pyrimidine-pyrimidone adducts, the purine-pyrimidine adducts and the addition products of amino acids to pyrimidine bases. The specific aspects of the high-intensity laser photochemistry of nucleic acid components are also briefly reviewed.
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Peak M, Peak J, Foote C, Krinsky N. Oxygen-independent direct deoxyribonucleic acid backbone breakage caused by Rose Bengal and visible light. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0047-2670(84)87033-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Saito I, Sugiyama H, Matsuura T. Photochemical reactions of nucleic acids and their constituents of photobiological relevance. Photochem Photobiol 1983; 38:735-43. [PMID: 6199802 DOI: 10.1111/j.1751-1097.1983.tb03609.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Anders A, Poppe W, Herkt-Maetzky C, Niemann EG, Hofer E. Investigations on the mechanism of photodynamic action of different psoralens with DNA. BIOPHYSICS OF STRUCTURE AND MECHANISM 1983; 10:11-30. [PMID: 6616009 DOI: 10.1007/bf00535539] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Investigations on the photodynamic action of psoralens with DNA were performed, using experimental techniques of fluorescence lifetime and NMR-CIDNP, as well as SCF-MO and CNDO molecular orbital calculations. It has been shown that the formation of a biradical through the triplet state is the decisive step for psoralen dimer formation, as well as for cyclobutane addition with thymine, while singlet oxygen production is responsible for enzyme inactivation (e.g., lysozyme and trypsin). The molecular orbital calculations, in agreement with experimental results, indicate that the differences in biological effectivity of different psoralens are based on variations in triplet formation probability.
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Huang HH. Chemical reaction of DNA with cross-linking agents: influences of base permutation on chemical reactivity. J Theor Biol 1980; 87:585-96. [PMID: 7242105 DOI: 10.1016/0022-5193(80)90237-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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24
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Ezra FS, Maccoss M, Danyluk SS. Influence of uracil photohydrate formation on the conformational properties of heterodinucleoside monophosphates. Biopolymers 1980. [DOI: 10.1002/bip.1980.360191105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Hoober JK, Franzi J. ANALYSIS OF THE MECHANISM OF PHOTODYNAMIC INDUCTION OF SYNTHESIS OF A POLYPEPTIDE IN ARTHROBACTER SP. Photochem Photobiol 1980. [DOI: 10.1111/j.1751-1097.1980.tb04034.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Ito S, Saito I, Nakata A, Matsuura T. Photochemical addition of L-lysine to 1,3-dimethyl-4-thiouracil. Photochem Photobiol 1980; 32:683-5. [PMID: 6784131 DOI: 10.1111/j.1751-1097.1980.tb04039.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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27
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352 - Redox processes during photodynamic damage of DNA III. Redox mechanism of photosensitization and radical reaction. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/0302-4598(80)80009-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Kittler L, Hradecná Z, Sühnel J. Cross-link formation of phage lambda DNA in situ photochemically induced by the furocoumarin derivative angelicin. BIOCHIMICA ET BIOPHYSICA ACTA 1980; 607:215-20. [PMID: 6445206 DOI: 10.1016/0005-2787(80)90074-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The combined action of 365 nm ultraviolet light and xanthotoxin or angelicin inhibits the injection of phage lambda into the host. For both furocoumarin derivatives the inhibition of injection is discussed in terms of photochemically induced cross-linking of the DNA inside the phage heads; Cross-linking of DNA has previously been described for xanthotoxin (Musajo, L. and Rodighiero, G. (1972) in Photophysiology (Giese, A.C., ed.), Vol. VII, pp. 115-147, Academic Press, New York and Scott, B.R., Pathak, M.A. and Mohn, G.R. (1976) Mutation Res. 39, 30-74) but not for angelicin. The electronic structures in the first excited states calculated by means of quantum chemistry according to the Pariser-Parr-Pople method are very similar for xanthotoxin, psoralen and angelicin. Hence angelicin should be capable of acting bifunctionally like xanthotoxin, but for sterical reasons such reaction should be possible only for the folded DNA, as in phage heads, but not for diluted aqueous solution of DNA.
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Frederiksen S, Hearst JE. Binding of 4'-aminomethyl 4,5',8-trimethyl psoralen to DNA, RNA and protein in HeLa cells and Drosophila cells. BIOCHIMICA ET BIOPHYSICA ACTA 1979; 563:343-55. [PMID: 111713 DOI: 10.1016/0005-2787(79)90053-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In Drosophila cells and HeLa cells treated with 4'-aminomethyl trioxsalen and ultraviolet light, this compound binds covalently to DNA and RNA. The maximum number of molecules bound to 10(3) base pairs in DNA is 60 and in RNA it is 20. In nuclei treated likewise the number of molecules bound to 10(3) base pairs in DNA can be as high as 376. When cells are irradiated in the frozen state the number of 4'-aminomethyl trioxsalen molecules bound per 10(3) base pairs in DNA is about 40 and in RNA about 20. DNA molecules from cells or nuclei treated with 4'-aminomethyl trioxsalen and ultraviolet light are highly crosslinked and appear as loops interspersed by double stranded regions when analyzed in the electron microscope under denaturing conditions. The loop sizes are heterogeneous and the fraction of double stranded regions increases to almost complete double-strandedness at high degrees of reaction. No secondary structures could be found in ribosomal RNA from Drosophila cells or HeLa cells after treatment with 4'-aminomethyl trioxsalen and ultraviolet light. In cells treated with 4'-aminomethyl trioxsalen and ultraviolet light the RNAase activity is increased considerably suggesting a release of lysosomal enzymes. 4'-aminomethyl trioxsalen and its photodecomposition products bind strongly to cellular proteins.
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Anders A. Models of DNA-dye-complexes: Energy transfer and molecular structures as evaluated by laser excitation. ACTA ACUST UNITED AC 1979. [DOI: 10.1007/bf00899685] [Citation(s) in RCA: 7] [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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Contreras S, Soto MA, C. JT. Applied microalgae photosynthesis: Discharge mechanisms in highly illuminated cells. Biotechnol Bioeng 1979. [DOI: 10.1002/bit.260210202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Piette J, Calberg-Bacq CM, Van de Vorst A. Photodynamic effect of proflavine on phiX174 bacteriophage, its DNA replicative form and its isolated single-stranded DNA: inactivation, mutagenesis and repair. MOLECULAR & GENERAL GENETICS : MGG 1978; 167:95-103. [PMID: 368589 DOI: 10.1007/bf00270325] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Singh H, Vadasz JA. Singlet oxygen: a major reactive species in the furocoumarin photosensitized inactivation of E. coli ribosomes. Photochem Photobiol 1978; 28:539-45. [PMID: 366637 DOI: 10.1111/j.1751-1097.1978.tb06966.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Triebel H, Bär H, Jacob HE, Sarfert E, Berg H. Sedimentation analysis of DNA photooxidized in the presence of thiopyronine. Photochem Photobiol 1978; 28:331-7. [PMID: 704690 DOI: 10.1111/j.1751-1097.1978.tb07715.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Balcarová Z, Kleinwächter V, Koudelka J. Interaction of phenosafranine with nucleic acids and model polyphosphates. II. Characterisation of phenosafranine binding to DNA. Biophys Chem 1978; 8:27-40. [PMID: 647101 DOI: 10.1016/0301-4622(78)85020-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Hradecná Z, Kittler L, Löber G. Photochemistry and photobiology of 5-azacytidine: effect of repair on photostabilization of Escherichia coli. ZEITSCHRIFT FUR ALLGEMEINE MIKROBIOLOGIE 1978; 18:567-73. [PMID: 83741 DOI: 10.1002/jobm.3630180804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The photochemical stability of the anomalous nucleic acid base 5-azacytidine (z5Cyd) on irradiation at 254 nm is by about one order of magnitude less than that of cytidine (Cyd). Contrary to the photochemical behaviour, incorporation of z5Cyd into the nucleic acids of E. coli strains SR 20 (uvr+ rec+), SR 74 (uvr+ rec-) and SR 22 (uvr- rec+) produced a higher resistance to UV light. Only the SR 73 (uvr- rec-) strain was shown to have an increased UV sensitivity. This latter finding is in accord with the photochemical properties of z5Cyd. The results led to the conclusion that excision and recombination repair processes contribute to the observable protective effect. The fact that inhibition of excission repair by caffeine or proflavine of the mutant uvr+ rec- changes protection into sensitization supports this idea.
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Berg H, Gollmick F, Triebel H, Bauer E, Horn G, Flemming J, Kittler L. 218 - Redox processes during photodynamic damage of DNA I. Results obtained by several physico-chemical methods. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/0302-4598(87)87045-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Roth D, London M. Acridine probe study into synergistic DNA-denaturing action of heat and ultraviolet light in squamous cells. J Invest Dermatol 1977; 69:368-72. [PMID: 903664 DOI: 10.1111/1523-1747.ep12510247] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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