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Verebová V, Beneš J, Staničová J. Biophysical Characterization and Anticancer Activities of Photosensitive Phytoanthraquinones Represented by Hypericin and Its Model Compounds. Molecules 2020; 25:E5666. [PMID: 33271809 PMCID: PMC7731333 DOI: 10.3390/molecules25235666] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 12/17/2022] Open
Abstract
Photosensitive compounds found in herbs have been reported in recent years as having a variety of interesting medicinal and biological activities. In this review, we focus on photosensitizers such as hypericin and its model compounds emodin, quinizarin, and danthron, which have antiviral, antifungal, antineoplastic, and antitumor effects. They can be utilized as potential agents in photodynamic therapy, especially in photodynamic therapy (PDT) for cancer. We aimed to give a comprehensive summary of the physical and chemical properties of these interesting molecules, emphasizing their mechanism of action in relation to their different interactions with biomacromolecules, specifically with DNA.
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Affiliation(s)
- Valéria Verebová
- Department of Chemistry, Biochemistry and Biophysics, University of Veterinary Medicine & Pharmacy, Komenského 73, 041 81 Košice, Slovakia;
| | - Jiří Beneš
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University, Kateřinská 1, 121 08 Prague, Czech Republic;
| | - Jana Staničová
- Department of Chemistry, Biochemistry and Biophysics, University of Veterinary Medicine & Pharmacy, Komenského 73, 041 81 Košice, Slovakia;
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University, Kateřinská 1, 121 08 Prague, Czech Republic;
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Damke GMZF, Damke E, de Souza Bonfim-Mendonça P, Ratti BA, de Freitas Meirelles LE, da Silva VRS, Gonçalves RS, César GB, de Oliveira Silva S, Caetano W, Hioka N, Souza RP, Consolaro MEL. Selective photodynamic effects on cervical cancer cells provided by P123 Pluronic®-based nanoparticles modulating hypericin delivery. Life Sci 2020; 255:117858. [PMID: 32497635 DOI: 10.1016/j.lfs.2020.117858] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 12/24/2022]
Abstract
At present, cervical cancer is the fourth leading cause of cancer among women worldwide with no effective treatment options. In this study we aimed to evaluate the efficacy of hypericin (HYP) encapsulated on Pluronic® P123 (HYP/P123) photodynamic therapy (PDT) in a comprehensive panel of human cervical cancer-derived cell lines, including HeLa (HPV 18-positive), SiHa (HPV 16-positive), CaSki (HPV 16 and 18-positive), and C33A (HPV-negative), compared to a nontumorigenic human epithelial cell line (HaCaT). Were investigated: (i) cell cytotoxicity and phototoxicity, cellular uptake and subcellular distribution; (ii) cell death pathway and cellular oxidative stress; (iii) migration and invasion. Our results showed that HYP/P123 micelles had effective and selective time- and dose-dependent phototoxic effects on cervical cancer cells but not in HaCaT. Moreover, HYP/P123 micelles accumulated in endoplasmic reticulum, mitochondria and lysosomes, resulting in photodynamic cell death mainly by necrosis. HYP/P123 induced cellular oxidative stress mainly via type II mechanism of PDT and inhibited cancer cell migration and invasion mainly via MMP-2 inhibition. Taken together, our results indicate a potentially useful role of HYP/P123 micelles as a platform for HYP delivery to more specifically and effectively treat cervical cancers through PDT, suggesting they are worthy for in vivo preclinical evaluations.
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Affiliation(s)
| | - Edilson Damke
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Patrícia de Souza Bonfim-Mendonça
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Bianca Altrão Ratti
- Department of Basic Health Sciences, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Lyvia Eloiza de Freitas Meirelles
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Vânia Ramos Sela da Silva
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Renato Sonchini Gonçalves
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Gabriel Batista César
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Sueli de Oliveira Silva
- Department of Basic Health Sciences, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Wilker Caetano
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Noboru Hioka
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Raquel Pantarotto Souza
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Marcia Edilaine Lopes Consolaro
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil.
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Verebova V, Belej D, Joniova J, Jurasekova Z, Miskovsky P, Kozar T, Horvath D, Stanicova J, Huntosova V. Deeper insights into the drug defense of glioma cells against hydrophobic molecules. Int J Pharm 2016; 503:56-67. [PMID: 26940808 DOI: 10.1016/j.ijpharm.2016.02.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 02/24/2016] [Accepted: 02/26/2016] [Indexed: 12/28/2022]
Abstract
By means of fluorescence microscopy the intracellular distribution of fluorescent drugs with different hydrophobicity (quinizarin, emodin and hypericin) was studied. Selective photoactivation of these drugs in precisely defined position (nuclear envelope) allowed moderately hydrophobic emodin enter the nucleus. Highly hydrophobic hypericin was predominantly kept in the membranes with no fluorescence observed in the nucleus. The redistribution of quinizarin, emodin and hypericin between lipids, proteins and DNA was studied in solutions and cells. Based on these results was proposed theoretical model of hydrophobic drugs' nuclear internalization after photo-activation. Molecular docking models showed that hypericin has the strongest affinity to P-glycoprotein involved in the cell detoxification. Presence of 10 μM quinizarin, emodin or hypericin increased P-glycoprotein function in U87 MG cells. Moreover, emodin pretreatment allowed quinizarin nuclear internalization without photo-activation, which was not the case for hypericin. The synergy of such pretreatment and photo-activation should lessen the drug doses with simultaneous increase of drug efficacy triggering cell apoptosis/necrosis.
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Affiliation(s)
- Valeria Verebova
- Institute of Biophysics, University of Veterinary Medicine and Pharmacy, Komenskeho 73, 041 81 Kosice, Slovakia.
| | - Dominik Belej
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.
| | - Jaroslava Joniova
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.
| | - Zuzana Jurasekova
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia; Center for Interdisciplinary Biosciences, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.
| | - Pavol Miskovsky
- Department of Biophysics, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia; Center for Interdisciplinary Biosciences, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.
| | - Tibor Kozar
- Center for Interdisciplinary Biosciences, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.
| | - Denis Horvath
- Center for Interdisciplinary Biosciences, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.
| | - Jana Stanicova
- Institute of Biophysics, University of Veterinary Medicine and Pharmacy, Komenskeho 73, 041 81 Kosice, Slovakia; Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University in Prague, Salmovska 1, 120 00 Prague 2, Czech Republic.
| | - Veronika Huntosova
- Center for Interdisciplinary Biosciences, Faculty of Science, P. J. Safarik University in Kosice, Jesenna 5, 041 54 Kosice, Slovakia.
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Ilkhani H, Hughes T, Li J, Zhong CJ, Hepel M. Nanostructured SERS-electrochemical biosensors for testing of anticancer drug interactions with DNA. Biosens Bioelectron 2016; 80:257-264. [PMID: 26851584 DOI: 10.1016/j.bios.2016.01.068] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 12/31/2022]
Abstract
Widely used anti-cancer treatments involving chemotherapeutic drugs result in cancer cell damage due to their strong interaction with DNA. In this work, we have developed laboratory biosensors for screening chemotherapeutic drugs and to aid in the assessment of DNA modification/damage caused by these drugs. The sensors utilize surface-enhanced Raman scattering (SERS) spectroscopy and electrochemical methods to monitor sensory film modification and observe the drug-DNA reactivity. The self-assembled monolayer protected gold-disk electrode (AuDE) was coated with a reduced graphene oxide (rGO), decorated with plasmonic gold-coated Fe2Ni@Au magnetic nanoparticles functionalized with double-stranded DNA (dsDNA), a sequence of the breast cancer gene BRCA1. The nanobiosensors AuDE/SAM/rGO/Fe2Ni@Au/dsDNA were then subjected to the action of a model chemotherapeutic drug, doxorubicin (DOX), to assess the DNA modification and its dose dependence. The designed novel nanobiosensors offer SERS/electrochemical transduction, enabling chemically specific and highly sensitive analytical signals generation. The SERS measurements have corroborated the DOX intercalation into the DNA duplex whereas the electrochemical scans have indicated that the DNA modification by DOX proceeds in a concentration dependent manner, with limit of detection LOD=8 µg/mL (S/N=3), with semilog linearity over 3 orders of magnitude. These new biosensors are sensitive to agents that interact with DNA and facilitate the analysis of functional groups for determination of the binding mode. The proposed nanobiosensors can be applied in the first stage of the drug development for testing the interactions of new drugs with DNA before the drug efficacy can be assessed in more expensive testing in vitro and in vivo.
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Affiliation(s)
- Hoda Ilkhani
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA
| | - Taylor Hughes
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA
| | - Jing Li
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Chuan Jian Zhong
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Maria Hepel
- Department of Chemistry, State University of New York at Potsdam, Potsdam, NY 13676, USA.
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Eriksson ESE, Santos DJVAD, Guedes RC, Eriksson LA. Properties and Permeability of Hypericin and Brominated Hypericin in Lipid Membranes. J Chem Theory Comput 2009; 5:3139-49. [DOI: 10.1021/ct9002702] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Emma S. E. Eriksson
- Örebro Life Science Center, School of Science and Technology, Örebro University, Fakultetsgatan 1, 70182 Örebro, Sweden, Modelling and Simulation Research Center, Örebro University, Örebro, Sweden, Department of Pharmacy, University of Lisbon, 1649-019 Lisbon, Portugal, and School of Chemistry, National University of Ireland, University Road, Galway, Ireland
| | - Daniel J. V. A. dos Santos
- Örebro Life Science Center, School of Science and Technology, Örebro University, Fakultetsgatan 1, 70182 Örebro, Sweden, Modelling and Simulation Research Center, Örebro University, Örebro, Sweden, Department of Pharmacy, University of Lisbon, 1649-019 Lisbon, Portugal, and School of Chemistry, National University of Ireland, University Road, Galway, Ireland
| | - Rita C. Guedes
- Örebro Life Science Center, School of Science and Technology, Örebro University, Fakultetsgatan 1, 70182 Örebro, Sweden, Modelling and Simulation Research Center, Örebro University, Örebro, Sweden, Department of Pharmacy, University of Lisbon, 1649-019 Lisbon, Portugal, and School of Chemistry, National University of Ireland, University Road, Galway, Ireland
| | - Leif A. Eriksson
- Örebro Life Science Center, School of Science and Technology, Örebro University, Fakultetsgatan 1, 70182 Örebro, Sweden, Modelling and Simulation Research Center, Örebro University, Örebro, Sweden, Department of Pharmacy, University of Lisbon, 1649-019 Lisbon, Portugal, and School of Chemistry, National University of Ireland, University Road, Galway, Ireland
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Wu Y, Zhao B, Xu W, Li G, Li B. Raman spectroscopic investigation of the single-monolayer Langmuir-Blodgett film of C16NaphOH and C10AzoNaphC4N-SDS. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2003; 59:1171-1176. [PMID: 12659885 DOI: 10.1016/s1386-1425(02)00297-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Raman spectra were measured for Langmuir-Blodgett (LB) films of C(16)NaphOH and C(10)AzoNaphC(4)N-SDS on Calcium Fluorite substrate for the first time. In order to find out favorable excitation condition, Raman spectra of the single and multi-monolayer LB films excited at different lines at 244, 514, 633 and 778 nm are recorded and compared in the present study. Raman spectrum of the monolayer LB film of C(16)NaphOH excited by 244 nm demonstrate that excellent signal to noise is achieved even for one monolayer LB film with an extremely short integrating time as 60 s because of being resonantly enhanced, while no meaningful spectra were recorded under the same condition for the monolayer LB film of C(10)AzoNaphC(4)N-SDS because of burning. Using a HeNe 633 nm excitation the problem with strong substrate fluorescence was partially solved, since under these conditions this fluorescence is mainly outside the fingerprint region of the LB film molecules (1000-2000 cm(-1)). Therefore by using the HeNe laser excitation, Raman spectra with high signal to noise ratio of LB films of C(16)NaphOH were collected and shown in this paper. These findings stress again the necessity to define an appropriate Raman system for this special application of LB film diagnosis.
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Affiliation(s)
- Yuqing Wu
- Key Laboratory for Supramolecular Structure and Material of the Ministry of Education, Jilin University, 130023, Changchun, People's Republic of China
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Peebles KA, Baker RK, Kurz EU, Schneider BJ, Kroll DJ. Catalytic inhibition of human DNA topoisomerase IIalpha by hypericin, a naphthodianthrone from St. John's wort (Hypericum perforatum). Biochem Pharmacol 2001; 62:1059-70. [PMID: 11597574 DOI: 10.1016/s0006-2952(01)00759-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
St. John's wort (Hypericum perforatum) is the most widely used herbal medicine for the treatment of depression. However, concerns have arisen about the potential of its interaction with other drugs due to the induction of cytochrome P450 isozymes 1A2 and 3A4 by the components hypericin and hyperforin, respectively. Structurally similar natural products are often employed as antitumor agents due to their action as inhibitors of DNA topoisomerases, nuclear enzymes that modify DNA during cellular proliferation. Preliminary findings that hypericin inhibited the DNA relaxation activity of topoisomerase IIalpha (topo II; EC 5.99.1.3) led us to investigate the mechanism of enzyme inhibition. Rather than stabilizing the enzyme in covalent complexes with DNA (cleavage complexes), hypericin inhibited the enzyme prior to DNA cleavage. In vitro assays indicate that hypericin is a potent antagonist of cleavage complex stabilization by the chemotherapeutics etoposide and amsacrine. This antagonism appears to be due to the ability of hypericin to intercalate or distort DNA structure, thereby precluding topo II binding and/or DNA cleavage. Supporting its non-DNA damaging, catalytic inhibition of topo II, hypericin was shown to be equitoxic to both wild-type and amsacrine-resistant HL-60 leukemia cell lines. Moreover, hypericin was incapable of stimulating DNA damage-responsive gene promoters that are activated by etoposide. As with the in vitro topo II assay, antagonism of DNA damage stimulated by 30 microM etoposide was evident in leukemia cells pretreated with 5 microM hypericin. Since many cancer patients experience clinical depression and concomitantly self-medicate with herbal remedies, extracts of St. John's wort should be investigated further for their potential to antagonize topo II-directed chemotherapy regimens.
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Affiliation(s)
- K A Peebles
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Colorado Health Sciences Center, 4200 East 9th Avenue, Denver, CO 80262, USA
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Liu CD, Kwan D, Saxton RE, McFadden DW. Hypericin and photodynamic therapy decreases human pancreatic cancer in vitro and in vivo. J Surg Res 2000; 93:137-43. [PMID: 10945955 DOI: 10.1006/jsre.2000.5949] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND The treatment of pancreatic cancer has remained dismal despite advances in medical and surgical care. Recent preclinical data have revealed that hypericin, a photochemical dye, is activated by green light and generates toxic radical species in tumors. We hypothesized that interstitial hypericin and laser phototherapy would decrease pancreatic cancer growth. METHODS MiaPaCa-2 and PANC-1 cells were grown in tissue culture. In vitro experiments were performed with addition of 10 microg of hypericin/500,000 cancer cells. Cells were incubated with hypericin for 2 h. Cells were then exposed to KTP532 green laser light for 1 min at 0.6 W using a cylindrical diffuser tip. Cell growth was measured by MTT assay 24 h after laser treatment, N = 12. MiaPaCa-2 cells were implanted subcutaneously and orthotopically in pancreas of nude mice. After 5 weeks, both tumors were injected with 100 microg of hypericin followed by insertion of a cylindrical diffuser tip into the tumor center. Mice received 200J KTP laser light at 1.0 W in two sites. Tumors were measured before and 4 weeks after laser treatment. RESULTS Both in vitro and in vivo mice data showed a significant decrease in growth of pancreatic cancer. Pancreatic cancer cell growth was suppressed by 66.1 +/- 0.2%, n = 12, P < 0.01, ANOVA. Subcutaneous shoulder tumors were suppressed by 91.2 +/- 2.3%, n = 12, P < 0.001, and orthotopically grown pancreatic tumors were suppressed by 42.2 +/- 8.1%, n = 12, P < 0.05, compared to pretreatment sizes. Data expressed as percentage reduction vs paired controls in the MTT assay and vs pre-photodynamic therapy in mice experiments. Paired Student's t tests were performed vs pretreatment sizes. CONCLUSION Both in vitro and in vivo results revealed a significant decrease in pancreatic cancer cell growth. Laser or dye alone had no effect, indicating that intratumor hypericin and laser therapy may prove useful in unresectable pancreatic cancer.
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Affiliation(s)
- C D Liu
- Department of Surgery, UCLA Medical Center, Los Angeles, California 90095-6904, USA.
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Hypericum Perforatum - St. John's Wort Chemical, Pharmacological and Clinical Aspects. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1572-5995(00)80037-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Smirnov A, Fulton DB, Andreotti A, Petrich JW. Exploring Ground-State Heterogeneity of Hypericin and Hypocrellin A and B: Dynamic and 2D ROESY NMR Study. J Am Chem Soc 1999. [DOI: 10.1021/ja9906002] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Smirnov
- Contribution from the Department of Chemistry and the Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa 50011
| | - D. B. Fulton
- Contribution from the Department of Chemistry and the Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa 50011
| | - A. Andreotti
- Contribution from the Department of Chemistry and the Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa 50011
| | - J. W. Petrich
- Contribution from the Department of Chemistry and the Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa 50011
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Kocisová E, Chinsky L, Miskovský P. Sequence specific interaction of the photoactive drug hypericin depends on the structural arrangement and the stability of the structure containing its specific 5AG3 target: a resonance Raman spectroscopy study. J Biomol Struct Dyn 1999; 17:51-9. [PMID: 10496421 DOI: 10.1080/07391102.1999.10508340] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The resonance Raman spectra of three oligonucleotides with different lengths containing a specific 5'AG3' target doublet for hypericin - a potent antiretroviral and anticancer photoactive agent, and their 1:1 and 1:2 (oligonucleotide: hypericin) complexes are reported. It is shown that the structural arrangement of the oligonucleotides, their structural stability and the local structural arrangement around the 5'AG3' hypericin target, are the factors which determine the formation of a stable, specifically bounded DNA-hypericin complexes.
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Affiliation(s)
- E Kocisová
- Department of Biophysics, P.J. Safárik University, Kosice, Slovakia
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Das K, Smirnov AV, Wen J, Miskovsky P, Petrich JW. Photophysics of Hypericin and Hypocrellin A in Complex with Subcellular Components: Interactions with Human Serum Albumin. Photochem Photobiol 1999. [DOI: 10.1111/j.1751-1097.1999.tb03339.x] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Staničová J, Fabriciová G, Chinsky L, Šutiak V, Miškovský P. Amantadine–DNA interaction as studied by classical and resonance Raman spectroscopy. J Mol Struct 1999. [DOI: 10.1016/s0022-2860(98)00659-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Das K, Smirnov AV, Snyder MD, Petrich JW. Picosecond Linear Dichroism and Absorption Anisotropy of Hypocrellin: Toward a Unified Picture of the Photophysics of Hypericin and Hypocrellin. J Phys Chem B 1998. [DOI: 10.1021/jp980249r] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. Das
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
| | - A. V. Smirnov
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
| | - M. D. Snyder
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
| | - J. W. Petrich
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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Miškovský P, Jancura D, Sánchez-Cortés S, Kočišová E, Chinsky L. Antiretrovirally Active Drug Hypericin Binds the IIA Subdomain of Human Serum Albumin: Resonance Raman and Surface-Enhanced Raman Spectroscopy Study. J Am Chem Soc 1998. [DOI: 10.1021/ja974233a] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pavol Miškovský
- Contribution from the Department of Biophysics, P. J. Šafárik University, Jesenná 5, 041 54 Košice, Slovakia, Instituto de Estructura de la Materia, CSIC, Serrano, 121, 28006 Madrid, Spain, and LPBC (CNRS URA 2056), Université P. et M. Curie, Case 138, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Daniel Jancura
- Contribution from the Department of Biophysics, P. J. Šafárik University, Jesenná 5, 041 54 Košice, Slovakia, Instituto de Estructura de la Materia, CSIC, Serrano, 121, 28006 Madrid, Spain, and LPBC (CNRS URA 2056), Université P. et M. Curie, Case 138, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Santiago Sánchez-Cortés
- Contribution from the Department of Biophysics, P. J. Šafárik University, Jesenná 5, 041 54 Košice, Slovakia, Instituto de Estructura de la Materia, CSIC, Serrano, 121, 28006 Madrid, Spain, and LPBC (CNRS URA 2056), Université P. et M. Curie, Case 138, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Eva Kočišová
- Contribution from the Department of Biophysics, P. J. Šafárik University, Jesenná 5, 041 54 Košice, Slovakia, Instituto de Estructura de la Materia, CSIC, Serrano, 121, 28006 Madrid, Spain, and LPBC (CNRS URA 2056), Université P. et M. Curie, Case 138, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Laurent Chinsky
- Contribution from the Department of Biophysics, P. J. Šafárik University, Jesenná 5, 041 54 Košice, Slovakia, Instituto de Estructura de la Materia, CSIC, Serrano, 121, 28006 Madrid, Spain, and LPBC (CNRS URA 2056), Université P. et M. Curie, Case 138, 4 Place Jussieu, 75231 Paris Cedex 05, France
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Sánchez-Cortés S, Miskovsky P, Jancura D, Bertoluzza A. Specific Interactions of Antiretroviraly Active Drug Hypericin with DNA As Studied by Surface-Enhanced Resonance Raman Spectroscopy. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp951980q] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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