1
|
Miljanić S, Kenđel A, Novak M, Deliqeorqiev TG, Crnolatac I, Piantanida I, Chiş V. Distinguishing binding modes of a new phosphonium dye with DNA by surface-enhanced Raman spectroscopy. RSC Adv 2016. [DOI: 10.1039/c6ra03586h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SERS spectroscopy provided structural data on binding of a dye as monomer and dimer within minor groove of adenine–thymine polynucleotides.
Collapse
Affiliation(s)
- Snežana Miljanić
- Division of Analytical Chemistry
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- HR-10000 Zagreb
| | - Adriana Kenđel
- Division of Analytical Chemistry
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- HR-10000 Zagreb
| | - Morana Novak
- Division of Analytical Chemistry
- Department of Chemistry
- Faculty of Science
- University of Zagreb
- HR-10000 Zagreb
| | - Todor G. Deliqeorqiev
- Department of Pharmaceutical and Applied Organic Chemistry
- Faculty of Chemistry
- University of Sofia
- 1164 Sofia
- Bulgaria
| | - Ivo Crnolatac
- Division of Organic Chemistry and Biochemistry
- Ruđer Bošković Institute
- HR-10002 Zagreb
- Croatia
| | - Ivo Piantanida
- Division of Organic Chemistry and Biochemistry
- Ruđer Bošković Institute
- HR-10002 Zagreb
- Croatia
| | - Vasile Chiş
- Faculty of Physics
- Babeş-Bolyai University
- RO-400084 Cluj-Napoca
- Romania
| |
Collapse
|
2
|
Ghosh S, Banik D, Roy A, Kundu N, Kuchlyan J, Sarkar N. Spectroscopic investigation of the binding interactions of a membrane potential molecule in various supramolecular confined environments: contrasting behavior of surfactant molecules in relocation or release of the probe between nanocarriers and DNA surface. Phys Chem Chem Phys 2014; 16:25024-38. [DOI: 10.1039/c4cp03178d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
3
|
Mati SS, Roy SS, Chall S, Bhattacharya S, Bhattacharya SC. Unveiling the groove binding mechanism of a biocompatible naphthalimide-based organoselenocyanate with calf thymus DNA: an "ex vivo" fluorescence imaging application appended by biophysical experiments and molecular docking simulations. J Phys Chem B 2013; 117:14655-65. [PMID: 24205834 DOI: 10.1021/jp4090553] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The present study embodies a detailed investigation of the binding modes of a potential anticancer and neuroprotective fluorescent drug, 2-(5-selenocyanato-pentyl)-6-chloro benzo[de]isoquinoline-1,3-dione (NPOS) with calf thymus DNA (ctDNA). Experimental results based on spectroscopy, isothermal calorimetry, electrochemistry aided with DNA-melting, and circular dichroism studies unambiguously established the formation of a groove binding network between the NPOS and ctDNA. Molecular docking analysis ascertained a hydrogen bonding mediated 'A-T rich region of B-DNA' as the preferential docking site for NPOS. The cellular uptake and binding of NPOS with DNA from "Ehrlich Ascites Carcinoma" cells confirmed its biocompatibility within tumor cells. Experimental and ex vivo cell imaging studies vividly signify the importance of NPOS as a potential prerequisite for its use in therapeutic purposes.
Collapse
|
4
|
Miljanić S, Dijanošić A, Piantanida I, Meić Z, Albelda MT, Sornosa-Ten A, García-Espana E. Surface-enhanced Raman study of the interactions between tripodal cationic polyamines and polynucleotides. Analyst 2011; 136:3185-93. [PMID: 21695343 DOI: 10.1039/c0an01035a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Raman and surface-enhanced Raman spectra of new DNA/RNA-binding compounds consisting of three imidazole (Im) and three pyridine (Py) rings connected by tripodal polyaminomethylene linkages were obtained by the near-infrared excitation at 1064 nm. Study of interactions of Im and Py polyamines with single-stranded RNA polynucleotides (poly A, poly G, poly C, poly U), double-stranded DNA polynucleotides (poly dAdT-poly dAdT, poly dGdC-poly dGdC) and calf thymus DNA (ct-DNA) by surface-enhanced Raman spectroscopy (SERS) reveals unambiguous enhancement of the Raman scattering from the small molecules as well as appearance of new bands in spectra associated mainly with nucleobases. The SERS experiments point toward comparable interactions of Im and Py polyamines with single-stranded purine and pyrimidine polynucleotides. Furthermore, SERS experiments with double stranded polynucleotides reveal the base-pair dependent selectivity of Im and Py, whereby interactions within both, major and minor groove are indicated for poly dAdT-poly dAdT, at variance to preferred binding of Im and Py to only major groove of poly dGdC-poly dGdC. SERS spectra of Im and Py with ct-DNA imply that protonated amino groups of these compounds preferentially interact with N7 atoms (adenine, guanine) while nitrogen in aromatic rings of polyamines might be attracted to C6-NH(2) (adenine), all sites being located at the major groove of the DNA helix. Wavenumber downshift of the imidazole (Im) and pyridine (Py) ring vibrations supports aromatic stacking interactions of imidazole and pyridine aromatic moieties with DNA base-pairs.
Collapse
Affiliation(s)
- Snežana Miljanić
- Laboratory of Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia.
| | | | | | | | | | | | | |
Collapse
|
5
|
Radić Stojković M, Miljanić S, Mišković K, Glavaš-Obrovac L, Piantanida I. The phenanthridine biguanides efficiently differentiate between dGdC, dAdT and rArU sequences by two independent, sensitive spectroscopic methods. MOLECULAR BIOSYSTEMS 2011; 7:1753-65. [DOI: 10.1039/c1mb05030c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
6
|
Bhadra K, Kumar GS. Therapeutic potential of nucleic acid-binding isoquinoline alkaloids: Binding aspects and implications for drug design. Med Res Rev 2010; 31:821-62. [DOI: 10.1002/med.20202] [Citation(s) in RCA: 219] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
7
|
Maiti M, Kumar GS. Biophysical aspects and biological implications of the interaction of benzophenanthridine alkaloids with DNA. Biophys Rev 2009; 1:119-129. [PMID: 28509993 DOI: 10.1007/s12551-009-0014-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Accepted: 08/03/2009] [Indexed: 10/20/2022] Open
Abstract
Benzophenanthridine alkaloids represent a very interesting and significant group of natural products that exhibit a broad range of biological and pharmacological properties. Among this group of alkaloids, sanguinarine, nitidine, fagaronine, and chelerythrine have the potential to form molecular complexes with DNA structures and have attracted recent attention for their possible clinical and pharmacological utility. This review focuses on the interaction of these alkaloids with polymorphic DNA structures (B-form, Z-form, HL-form, and triple helical form) reported by several research groups employing various physical techniques such as spectrophotometry, spectrofluorimetry, circular dichroism, NMR spectroscopy, thermal melting, viscometry as well as thermodynamic analysis by isothermal titration calorimetry and differential scanning calorimetry to elucidate the mode and mechanism of action at the molecular level to determine the structure-activity relationship. DNA binding properties of these alkaloids are interpreted in relation to their biological activity.
Collapse
Affiliation(s)
- Motilal Maiti
- Biophysical Chemistry Laboratory, Indian Institute of Chemical Biology, Kolkata, 700032, India.
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, Indian Institute of Chemical Biology, Kolkata, 700032, India
| |
Collapse
|
8
|
Vanquelef E, Hélesbeux JJ, Duval O, Debiton E, Barthomeuf C, Jarry C, Forfar I, Richomme P. Synthesis and PC3 androgen-independent prostate cells antiproliferative effect of fagaronine derivatives. J Enzyme Inhib Med Chem 2007; 22:647-54. [PMID: 18035833 DOI: 10.1080/14756360701485901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Fagaronine derivatives syntheses were optimized and their effect on PC3 androgen-independent prostate cell line was evaluated. An assessment of the lipophilicity of the benzo[c]phenanthridine derivatives was achieved at pH 7.4 and et 6.7 by determining log D.
Collapse
Affiliation(s)
- Enguerran Vanquelef
- Univ Angers, SONAS, UFR Sciences Pharmaceutiques et Ingénierie de la Santé, Angers F-49100, France
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Clark RL, Deane FM, Anthony NG, Johnston BF, McCarthy FO, Mackay SP. Exploring DNA topoisomerase I inhibition by the benzo[c]phenanthridines fagaronine and ethoxidine using steered molecular dynamics. Bioorg Med Chem 2007; 15:4741-52. [PMID: 17517513 DOI: 10.1016/j.bmc.2007.05.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2006] [Accepted: 05/02/2007] [Indexed: 11/22/2022]
Abstract
The benzo[c]phenanthridines (BCPs) are a group of compounds that are believed to express their antitumor activity through the inhibition of topoisomerase I. The enzyme is crucial to cell cycle division and progression, and regulates the equilibrium between relaxed and supercoiled DNA that occurs during DNA replication. Over the years, we have prepared a number of BCPs and employed a number of biophysical techniques to explore their mechanism of action and improve their activity against this particular enzyme. The naturally occurring alkaloid fagaronine 1 and the synthetic compound ethoxidine 3 are two of the most active compounds, although their inhibitory mechanisms are different, being a poison and suppressor, respectively. We have modified the approach of steered molecular dynamics to create a torque on the intercalator to comprehensively sample the DNA binding site, and using topoisomerase I crystal structures, have proposed a model to explain the different mechanisms of action for these two BCP compounds.
Collapse
Affiliation(s)
- Rachel L Clark
- Strathclyde Institute for Pharmacy and Biomedical Sciences, University of Strathclyde, 27 Taylor Street, Glasgow G4 0NR, UK
| | | | | | | | | | | |
Collapse
|
10
|
Fu J, Urquhart SG. Linear dichroism in the X-ray absorption spectra of linear n-alkanes. J Phys Chem A 2006; 109:11724-32. [PMID: 16366622 DOI: 10.1021/jp053016q] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The nature of the linear dichroism in the near-edge X-ray absorption fine structure (NEXAFS) spectra of linear n-alkanes is a matter of long-standing controversy. Linear dichroism in the carbon 1s --> sigma*(C-C) transition has been interpreted within a building block model and a molecular orbital model, leading to two different descriptions for the angular dependence of this feature. When used for measurement of molecular orientation, the application of these two different models will lead to different results. We have explored the linear dichroism in the carbon 1s NEXAFS spectra of single crystals of the linear n-alkane hexacontane (n-C60H122). An analysis of the angular dependence in this spectrum shows that the transition dipole moment associated with the carbon 1s --> sigma*(C-C) transition is oriented along the macromolecular chain axis, contradicting the predictions of the building block model. However, other transitions are observed in the sigma*(C-H) and the sigma*(C-C) bands that are orthogonal to the dominant transitions for each band. We also observe that radiation damage can be manifest in the form of molecular reorientation in highly ordered organic thin films.
Collapse
Affiliation(s)
- Juxia Fu
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
| | | |
Collapse
|
11
|
Nyangulu JM, Hargreaves SL, Sharples SL, Mackay SP, Waigh RD, Duval O, Mberu EK, Watkins WM. Antimalarial benzo[c]phenanthridines. Bioorg Med Chem Lett 2005; 15:2007-10. [PMID: 15808457 DOI: 10.1016/j.bmcl.2005.02.074] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2004] [Revised: 02/21/2005] [Accepted: 02/22/2005] [Indexed: 11/21/2022]
Abstract
Analogues of the antimalarial alkaloid nitidine have been prepared with high potency against both chloroquine-sensitive and -resistant strains of Plasmodium falciparum in vitro. Simple modifications, using an established synthetic route, resulted in an analogue with IC(50) below 5ng/mL against a chloroquine-sensitive strain of P. falciparum. N-Ethylethoxidine had IC(50) below 30ng/mL against both chloroquine-sensitive and chloroquine-resistant strains of P. falciparum.
Collapse
Affiliation(s)
- James M Nyangulu
- Department of Pharmaceutical Sciences, University of Strathclyde, 27 Taylor Street, Glasgow, G4 0NR Scotland, UK
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Lynch MA, Duval O, Sukhanova A, Devy J, MacKay SP, Waigh RD, Nabiev I. Synthesis, biological activity and comparative analysis of DNA binding affinities and human DNA topoisomerase I inhibitory activities of novel 12-alkoxy-benzo[c]phenanthridinium salts. Bioorg Med Chem Lett 2001; 11:2643-6. [PMID: 11551768 DOI: 10.1016/s0960-894x(01)00520-0] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
New antitumor 12-alkoxy-benzo[c]phenanthridinium derivatives were obtained in high yields through multistep syntheses. Analysis of DNA binding and human DNA topoisomerase I inhibitory activities demonstrates that new compounds, combining 2, 6, and 12 substitutions, interact strongly with DNA and exhibit important topoisomerase I inhibition. The cytotoxicities against solid tumor cell lines are also determined and compared with those for fagaronine and ethoxidine.
Collapse
Affiliation(s)
- M A Lynch
- Laboratoire SONAS, UFR de Pharmacie, 16 boulevard Daviers, F-49100 Angers, France
| | | | | | | | | | | | | |
Collapse
|
13
|
Ermishov M, Sukhanova A, Kryukov E, Grokhovsky S, Zhuze A, Oleinikov V, Jardillier JC, Nabiev I. Raman and surface-enhanced Raman scattering spectroscopy of bis-netropsins and their DNA complexes. Biopolymers 2000; 57:272-81. [PMID: 10958319 DOI: 10.1002/1097-0282(2000)57:5<272::aid-bip40>3.0.co;2-v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The interactions of three bis-netropsins (bis-Nts), which are potent catalytic inhibitors of DNA-binding enzymes, with three double-stranded oligonucleotides (OLIGs), which contain sites of different specific affinities for each bis-Nt, were analyzed. Raman spectroscopy was performed for selective monitoring of modifications of the bis-Nt or the OLIG structure upon bis-Nt-DNA binding, and surface-enhanced Raman scattering spectroscopy (SERS) was an additional tool for topology studies of ligand-DNA complexes. The spectral data showed conformational changes of both partners (bis-Nt and OLIG) upon complexation. Structural variations of bis-Nts appeared to be dependent on a bis-Nt-OLIG binding constant and were found to be small in the specific DNA binding and highest for nonspecific binding of bis-Nt with the corresponding OLIG. The conformational changes of the OLIGs were varied with a bis-Nt-OLIG binding constant in the same manner. The bis-Nts seemed to induce a perturbation in the OLIG's structure, as well as in the positions of their direct binding. These DNA structural modification effects may explain the inhibition of DNA-binding enzymes in the variety of very distinct DNA-enzyme binding sites by bis-Nts reported previously.
Collapse
Affiliation(s)
- M Ermishov
- Institut Fédératif de Recherche, Biomolécules, UFR de Pharmacie, Université de Reims Champagne-Ardenne, France
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Fleury F, Sukhanova A, Ianoul A, Devy J, Kudelina I, Duval O, Alix AJ, Jardillier JC, Nabiev I. Molecular determinants of site-specific inhibition of human DNA topoisomerase I by fagaronine and ethoxidine. Relation to DNA binding. J Biol Chem 2000; 275:3501-9. [PMID: 10652345 DOI: 10.1074/jbc.275.5.3501] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
DNA topoisomerase (top) I inhibition activity of the natural alkaloid fagaronine (NSC157995) and its new synthetic derivative ethoxidine (12-ethoxy-benzo[c]phenanthridine) has been correlated with their molecular interactions and sequence specificity within the DNA complexes. Flow linear dichroism shows that ethoxidine exhibits the same inhibition of DNA relaxation as fagaronine at the 10-fold lower concentration. The patterns of DNA cleavage by top I show linear enhancement of CPT-dependent sites at the 0.016-50 microM concentrations of fagaronine, whereas ethoxidine suppress both top I-specific and CPT-dependent sites. Suppression of top I-mediated cleavage by ethoxidine is found to be specific for the sites, including strand cut between A and T. Fagaronine and ethoxidine are DNA major groove intercalators. Ethoxidine intercalates DNA in A-T sequences and its 12-ethoxy-moiety (absent in fagaronine) extends into the DNA minor groove. These findings may explain specificity of suppression by ethoxidine of the strong top I cleavage sites with the A(+1), T(-1) immediately adjacent to the strand cut. Fagaronine does not show any sequence specificity of DNA intercalation, but its highly electronegative oxygen of hydroxy group (absent in ethoxidine) is shown to be an acceptor of the hydrogen bond with the NH(2) group of G base of DNA. Ability of fagaronine to stabilize top I-mediated ternary complex is proposed to be determined by interaction of its hydroxy group with the guanine at position (+1) of the DNA cleavage site and of quaternary nitrogen interaction with top I. The model proposed provides a guidance for screening new top I-targeted drugs in terms of identification of molecular determinants responsible for their top I inhibition effects.
Collapse
Affiliation(s)
- F Fleury
- EA2063, Institut Fédératif de Recherche no. 53 "Biomolécules," UFR de Pharmacie, Université de Reims Champagne-Ardenne, 51100 Reims, France
| | | | | | | | | | | | | | | | | |
Collapse
|