1
|
Flexibility and Preorganization of Fluorescent Nucleobase-Pyrene Conjugates Control DNA and RNA Recognition. Molecules 2020; 25:molecules25092188. [PMID: 32392853 PMCID: PMC7248712 DOI: 10.3390/molecules25092188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/23/2020] [Accepted: 05/03/2020] [Indexed: 11/17/2022] Open
Abstract
We synthesized a new amino acid-fluorescent nucleobase derivative (qAN1-AA) and from it two new fluorescent nucleobase–fluorophore (pyrene) conjugates, whereby only the analogue with the longer and more flexible linker (qAN1-pyr2) self-folded into intramolecularly stacked qAN1/pyrene conformation, yielding characteristic, 100 nm-red-shifted emission (λmax = 500 nm). On the contrary, the shorter and more rigid linker resulted in non-stacked conformation (qAN1-pyr1), characterized by the emission of free pyrene at λmax = 400 nm. Both fluorescent nucleobase–fluorophore (pyrene) conjugates strongly interacted with ds-DNA/RNA grooves with similar affinity but opposite fluorescence response (due to pre-organization), whereas the amino acid-fluorescent base derivative (qAN1-AA) was inactive. However, only intramolecularly self-folded qAN1-pyr2 showed strong fluorescence selectivity toward poly U (Watson–Crick complementary to qAN1 nucleobase) and poly A (reverse Hoogsteen complementary to qAN1 nucleobase), while an opposite emission change was observed for non-complementary poly G and poly C. Non-folded analogue (qAN1-pyr1) showed no ss-RNA selectivity, demonstrating the importance of nucleobase-fluorophore pre-organization.
Collapse
|
2
|
Amritha B, Vasudevan S. Synthesis, characterisation, and DNA interaction studies of novel Cu(II), Ni(II), and Co(II) mono and bisligand complexes of N-(1,10-phenanthrolin-5-yl)acridine-9-carboxamide. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-01041-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
3
|
Prasher P, Sharma M. Medicinal chemistry of acridine and its analogues. MEDCHEMCOMM 2018; 9:1589-1618. [PMID: 30429967 DOI: 10.1039/c8md00384j] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 08/14/2018] [Indexed: 02/01/2023]
Abstract
'Acridine' along with its functional analogue 'Acridone' is the most privileged pharmacophore in medicinal chemistry with diverse applications ranging from DNA intercalators, endonuclease mimics, ratiometric selective ion sensors, and P-glycoprotein inhibitors in countering the multi-drug resistance, enzyme inhibitors, and reversals of neurodegenerative disorders. Their interaction with DNA and ability of selectively identifying numerous biologically useful ions has cemented exploitability of the acridone nucleus in modern day therapeutics. Additionally, most derivatives and salts of acridine are planar, crystalline, and stable displaying a strong fluorescence which, when coupled with their marked bio selectivity and low cytotoxicity, enables the studying and monitoring of several biochemical, metabolic, and pharmacological processes. In this review, a detailed picture covering the important therapeutic aspects of the acridone nucleus and its functional analogues is discussed.
Collapse
Affiliation(s)
- Parteek Prasher
- UGC Sponsored Centre for Advanced Studies , Department of Chemistry , Guru Nanak Dev University , Amritsar 143005 , India.,Department of Chemistry , University of Petroleum & Energy Studies , Dehradun 248007 , India . ;
| | - Mousmee Sharma
- UGC Sponsored Centre for Advanced Studies , Department of Chemistry , Guru Nanak Dev University , Amritsar 143005 , India
| |
Collapse
|
4
|
Saftić D, Ban Ž, Matić J, Tumirv LM, Piantanida I. Conjugates of Classical DNA/RNA Binder with Nucleobase: Chemical, Biochemical and Biomedical Applications. Curr Med Chem 2018; 26:5609-5624. [PMID: 29737251 DOI: 10.2174/0929867325666180508090640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/27/2018] [Accepted: 04/10/2018] [Indexed: 11/22/2022]
Abstract
Among the most intensively studied classes of small molecules (molecular weight < 650) in biomedical research are small molecules that non-covalently bind to DNA/RNA, and another intensively studied class is nucleobase derivatives. Both classes have been intensively elaborated in many books and reviews. However, conjugates consisting of DNA/RNA binder covalently linked to nucleobase are much less studied and have not been reviewed in the last two decades. Therefore, this review summarized reports on the design of classical DNA/RNA binder - nucleobase conjugates, as well as data about their interactions with various DNA or RNA targets, and even in some cases protein targets are involved. According to these data, the most important structural aspects of selective or even specific recognition between small molecule and target are proposed, and where possible related biochemical and biomedical aspects were discussed. The general conclusion is that this, rather new class of molecules showed an amazing set of recognition tools for numerous DNA or RNA targets in the last two decades, as well as few intriguing in vitro and in vivo selectivities. Several lead research lines show promising advancements toward either novel, highly selective markers or bioactive, potentially druggable molecules.
Collapse
Affiliation(s)
- Dijana Saftić
- Division of Organic Chemistry and Biochemistry, Ruder Boskovic Institute; 10002 Zagreb, Croatia
| | - Željka Ban
- Division of Organic Chemistry and Biochemistry, Ruder Boskovic Institute; 10002 Zagreb, Croatia
| | - Josipa Matić
- Division of Organic Chemistry and Biochemistry, Ruder Boskovic Institute; 10002 Zagreb, Croatia
| | - Lidija-Marija Tumirv
- Division of Organic Chemistry and Biochemistry, Ruder Boskovic Institute; 10002 Zagreb, Croatia
| | - Ivo Piantanida
- Division of Organic Chemistry and Biochemistry, Ruder Boskovic Institute; 10002 Zagreb, Croatia
| |
Collapse
|
5
|
Nucleobase-Guanidiniocarbonyl-Pyrrole Conjugates as Novel Fluorimetric Sensors for Single Stranded RNA. Molecules 2017; 22:molecules22122213. [PMID: 29236076 PMCID: PMC6149679 DOI: 10.3390/molecules22122213] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/04/2017] [Accepted: 12/09/2017] [Indexed: 01/13/2023] Open
Abstract
We demonstrate here for the first time that a guanidiniocarbonyl-pyrrole (GCP) unit can be applied for the fine recognition of single stranded RNA sequences—an intuitively unexpected result since so far binding of the GCP unit to ds-DNA or ds-RNA relied strongly on minor or major groove interactions, as shown in previous work. Two novel nucleobase–GCP isosteric conjugates differing in the flexibility of GCP unit revealed a fluorimetric recognition of various single stranded RNA, which could be additionally regulated by pH. The more rigid conjugate showed a specific fluorescence increase for poly A only at pH 7, whereby this response could be reversibly switched-off at pH 5. The more flexible derivative revealed selective fluorescence quenching by poly G at pH 7 but no change for poly A, whereas its recognition of poly AH+ can be switched-on at pH 5. The computational analysis confirmed the important role of the GCP fragment and its protonation states in the sensing of polynucleotides and revealed that it is affected by the intrinsic dynamical features of conjugates themselves. Both conjugates showed a negligible response to uracil and cytosine ss-RNA as well as ds-RNA at pH 7, and only weak interactions with ds-DNA. Thus, nucleobase–GCP conjugates can be considered as novel lead compounds for the design of ss-RNA or ss-DNA selective fluorimetric probes.
Collapse
|
6
|
Saftić D, Radić Stojković M, Žinić B, Glavaš-Obrovac L, Jukić M, Piantanida I, Tumir LM. Impact of linker between triazolyluracil and phenanthridine on recognition of DNA and RNA. Recognition of uracil-containing RNA. NEW J CHEM 2017. [DOI: 10.1039/c7nj02699d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A phenanthridine-triazolyluracilyl multifunctional ligand, linked by a lysine–glycine peptide, binds to poly rA–poly rU with micromolar affinity and selective fluorescence response.
Collapse
Affiliation(s)
- Dijana Saftić
- Laboratory for Biomolecular Interactions and Spectroscopy
- Division of Organic Chemistry & Biochemistry
- Ruđer Bošković Institute
- P.O.B. 180
- HR 10002 Zagreb
| | - Marijana Radić Stojković
- Laboratory for Biomolecular Interactions and Spectroscopy
- Division of Organic Chemistry & Biochemistry
- Ruđer Bošković Institute
- P.O.B. 180
- HR 10002 Zagreb
| | - Biserka Žinić
- Laboratory for Biomolecular Interactions and Spectroscopy
- Division of Organic Chemistry & Biochemistry
- Ruđer Bošković Institute
- P.O.B. 180
- HR 10002 Zagreb
| | - Ljubica Glavaš-Obrovac
- Department of Medicinal Chemistry and Biochemistry
- School of Medicine Osijek
- 31000 Osijek
- Croatia
| | - Marijana Jukić
- Department of Medicinal Chemistry and Biochemistry
- School of Medicine Osijek
- 31000 Osijek
- Croatia
| | - Ivo Piantanida
- Laboratory for Biomolecular Interactions and Spectroscopy
- Division of Organic Chemistry & Biochemistry
- Ruđer Bošković Institute
- P.O.B. 180
- HR 10002 Zagreb
| | - Lidija-Marija Tumir
- Laboratory for Biomolecular Interactions and Spectroscopy
- Division of Organic Chemistry & Biochemistry
- Ruđer Bošković Institute
- P.O.B. 180
- HR 10002 Zagreb
| |
Collapse
|
7
|
Crnolatac I, Rogan I, Majić B, Tomić S, Deligeorgiev T, Horvat G, Makuc D, Plavec J, Pescitelli G, Piantanida I. Small molecule probes finely differentiate between various ds- and ss-DNA and RNA by fluorescence, CD and NMR response. Anal Chim Acta 2016; 940:128-35. [PMID: 27662767 DOI: 10.1016/j.aca.2016.08.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 08/10/2016] [Accepted: 08/11/2016] [Indexed: 01/24/2023]
Abstract
Two small molecules showed intriguing properties of analytical multipurpose probes, whereby one chromophore gives different signal for many different DNA/RNA by application of several highly sensitive spectroscopic methods. Dyes revealed pronounced fluorescence ratiomeric differentiation between ds-AU-RNA, AT-DNA and GC-DNA in approximate order 10:8:1. Particularly interesting, dyes showed specific fluorimetric response for poly rA even at 10-fold excess of any other ss-RNA, and moreover such emission selectivity is preserved in multicomponent ss-RNA mixtures. The dyes also showed specific chiral recognition of poly rU in respect to the other ss-RNA by induced CD (ICD) pattern in visible range (400-500 nm), which was attributed to the dye-side-chain contribution to binding (confirmed by absence of any ICD band for reference compound lacking side-chain). Most intriguingly, minor difference in the side-chain attached to dye chromophore resulted in opposite sign of dye-ICD pattern, whereby differences in NMR NOESY contacts and proton chemical shifts between two dye/oligo rU complexes combined with MD simulations and CD calculations attributed observed bisignate ICD to the dimeric dye aggregate within oligo rU.
Collapse
Affiliation(s)
- Ivo Crnolatac
- Division of Organic Chemistry and Biochemistry, Division of Physical Chemistry, Ruđer Bošković Institute, P.O. Box 180, 10002 Zagreb, Croatia
| | - Iva Rogan
- Division of Organic Chemistry and Biochemistry, Division of Physical Chemistry, Ruđer Bošković Institute, P.O. Box 180, 10002 Zagreb, Croatia
| | - Boris Majić
- Division of Organic Chemistry and Biochemistry, Division of Physical Chemistry, Ruđer Bošković Institute, P.O. Box 180, 10002 Zagreb, Croatia
| | - Sanja Tomić
- Division of Organic Chemistry and Biochemistry, Division of Physical Chemistry, Ruđer Bošković Institute, P.O. Box 180, 10002 Zagreb, Croatia
| | | | - Gordan Horvat
- Department of Physical Chemistry, Faculty of Science/Chemistry, Horvatovac 102A, HR-10000 Zagreb, Croatia
| | - Damjan Makuc
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, Ljubljana, Slovenia; EN-FIST Centre of Excellence, Trg Osvobodilne Fronte 13, Ljubljana, Slovenia
| | - Janez Plavec
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, Ljubljana, Slovenia; EN-FIST Centre of Excellence, Trg Osvobodilne Fronte 13, Ljubljana, Slovenia
| | - Gennaro Pescitelli
- Department of Chemistry, University of Pisa, Via Moruzzi 13, Pisa, Italy
| | - Ivo Piantanida
- Division of Organic Chemistry and Biochemistry, Division of Physical Chemistry, Ruđer Bošković Institute, P.O. Box 180, 10002 Zagreb, Croatia.
| |
Collapse
|
8
|
Suć J, Tumir LM, Glavaš-Obrovac L, Jukić M, Piantanida I, Jerić I. The impact of α-hydrazino acids embedded in short fluorescent peptides on peptide interactions with DNA and RNA. Org Biomol Chem 2016; 14:4865-74. [PMID: 27161341 DOI: 10.1039/c6ob00425c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of novel hydrazino-based peptidomimetics and analogues comprising N-terminal lysine and C-terminal phenanthridinyl-l-alanine were prepared. The presented results demonstrate the up to now unknown possibility to finely modulate peptide interactions with DNA/RNA by α-hydrazino group insertion and how the different positioning of two α-hydrazino groups in peptides controls binding to various double stranded and single stranded DNA and RNA. All peptidomimetics bind with 1-10 micromolar affinity to ds-DNA/RNA, whereby the binding mode is a combination of electrostatic interactions and hydrophobic interactions within DNA/RNA grooves. Insertion of the α-hydrazino group into the peptide systematically decreased its fluorimetric response to DNA/RNA binding in the order: mono-hydrazino < alternating-hydrazino < sequential-hydrazino group. Binding studies of ss-polynucleotides suggest intercalation of phenanthridine between polynucleotide bases, whereby affinity and fluorimetric response decrease with the number of α-hydrazino groups in the peptide sequence. Particularly interesting was the interaction of two sequential α-hydrazino acids-peptidomimetic with poly rG, characterised by a specific strong increase of CD bands, while all other peptide/ssRNA combinations gave only a CD-band decrease. All mentioned interactions could also be reversibly controlled by adjusting the pH, due to the protonation of the fluorophore.
Collapse
Affiliation(s)
- Josipa Suć
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | | | | | | | | | | |
Collapse
|
9
|
Tumir LM, Šupljika F, Piantanida I. Bis-phenanthridinium–adenine conjugates as fluorescent and CD reporters for fine structural differences in ds-DNA/RNA and ss-RNA structures. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1099655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Lidija-Marija Tumir
- Laboratory for Study of Interactions of Biomacromolecules, Division of Organic Chemistry & Biochemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Filip Šupljika
- Laboratory for Study of Interactions of Biomacromolecules, Division of Organic Chemistry & Biochemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Ivo Piantanida
- Laboratory for Study of Interactions of Biomacromolecules, Division of Organic Chemistry & Biochemistry, Ruđer Bošković Institute, Zagreb, Croatia
| |
Collapse
|
10
|
Radić Stojković M, Škugor M, Tomić S, Grabar M, Smrečki V, Dudek Ł, Grolik J, Eilmes J, Piantanida I. Dibenzotetraaza[14]annulene-adenine conjugate recognizes complementary poly dT among ss-DNA/ss-RNA sequences. Org Biomol Chem 2014; 11:4077-85. [PMID: 23673772 DOI: 10.1039/c3ob40519b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Among three novel DBTAA derivatives only the DBTAA-propyl-adenine conjugate showed recognition of the consecutive oligo dT sequence by increased affinity and specific induced chirooptical response in comparison to other single stranded RNA and DNA; whereby of particular importance is the up until now unique efficient differentiation between dT and rU. At variance, its close analogue DBTAA-hexyl-adenine did not reveal any selectivity between ss-DNA/RNA pointing out the important role of steric factors (linker length); moreover non-selectivity of the reference compound (, lacking adenine) stressed the importance of adenine interactions in the selectivity.
Collapse
Affiliation(s)
- Marijana Radić Stojković
- Division of Organic Chemistry and Biochemistry, Division of Physical Chemistry, NMR Centre, Ruđer Bošković Institute, Bijenička cesta 54, PO Box 180, HR-10002 Zagreb, Croatia
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Grabar Branilović M, Tomić S, Tumir LM, Piantanida I. The bis-phenanthridinium system flexibility and position of covalently bound uracil finely tunes the interaction with polynucleotides. MOLECULAR BIOSYSTEMS 2013; 9:2051-62. [PMID: 23681361 DOI: 10.1039/c3mb25578f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of structurally similar bis-phenanthridinium derivatives, some with uracil at different positions, revealed different interactions with various polynucleotides. The uniform binding of mononucleotides to all studied compounds by "cyclobisintercaland" binding type indicated that compound-polynucleotide interaction selectivity was the consequence of polynucleotide secondary structure and not direct nucleobase recognition. Although affinity and fluorimetric response of all studied compounds toward ds-DNA/RNA was similar, the thermal denaturation and ICD signal-based sensing was highly sensitive to polynucleotide basepair composition and secondary structure. In particular, for the specific poly rAH(+)-poly rAH(+) double helix MD parameters are newly developed and used for analysis of its complexes. The highly sensitive orientation of phenanthridinium as well as the role of the uracil substituent, both binding interactions finely tuned by the steric and binding properties of the DNA/RNA-ligand interaction site, offer novel structural information about binding and steric properties of particular DNA-RNA systems.
Collapse
Affiliation(s)
- Marina Grabar Branilović
- Laboratory for Chemical and Biological Crystallography, Division of Physical Chemistry, Ruđer Bošković Institute, HR 10002 Zagreb, P.O.B. 180, Croatia.
| | | | | | | |
Collapse
|
12
|
Wang JT, Zheng XH, Ji LN, Mao ZW. High nuclease activity of a copper(II)-bipyridyl complex containing cytosine pendants. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.492216] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Jin-Tao Wang
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
| | - Xiao-Hui Zheng
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
| | - Liang-Nian Ji
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
| | - Zong-Wan Mao
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
| |
Collapse
|
13
|
Wang JT, Xia Q, Zheng XH, Chen HY, Chao H, Mao ZW, Ji LN. An effective approach to artificial nucleases using copper(ii) complexes bearing nucleobases. Dalton Trans 2010; 39:2128-36. [DOI: 10.1039/b915392f] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
DNA binding property, nuclease activity and cytotoxicity of Zn(II) complexes of terpyridine derivatives. Biometals 2008; 22:297-305. [DOI: 10.1007/s10534-008-9166-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2008] [Accepted: 09/30/2008] [Indexed: 11/27/2022]
|
15
|
Jiang Q, Wu Z, Zhang Y, Hotze ACG, Hannon MJ, Guo Z. Effect of adenine moiety on DNA binding property of copper(ii)–terpyridine complexes. Dalton Trans 2008:3054-60. [DOI: 10.1039/b719010g] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
16
|
Abstract
We demonstrate here that MTase-modified DNA can undergo the Staudinger ligation with triarylphosphines derivatized with phenanthroline. Presentation of these duplexes with Cu(II) and 3-mercaptopropionic acid leads to strand scission proximal to the MTase recognition site. By virtue of their ability to use a synthetic azide-bearing cofactor, M.TaqI and M.HhaI produce a DNA lesion that induces scission 5' to the base modified by the enzyme. This chemistry represents a new approach by which regions of DNA methylation can be rapidly identified on the basis of DNA damage.
Collapse
Affiliation(s)
- Lindsay R Comstock
- School of Pharmacy, University of Wisconsin-Madison, 777 Highland Avenue, Madison, WI 53705-2222, USA
| | | |
Collapse
|
17
|
Martelli A, Jourdan M, Constant JF, Demeunynck M, Dumy P. Photoreactive threading agent that specifically binds to abasic sites in DNA. Bioorg Med Chem Lett 2005; 16:154-7. [PMID: 16213714 DOI: 10.1016/j.bmcl.2005.09.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2005] [Revised: 09/05/2005] [Accepted: 09/12/2005] [Indexed: 11/25/2022]
Abstract
We report the synthesis and study of a photoreactive nitrobenzamide containing acridine that specifically interacts at abasic site in DNA by threading intercalation and introduces under irradiation a lesion on the opposite strand at the unpaired pyrimidine.
Collapse
Affiliation(s)
- Alain Martelli
- LEDSS UMR 5616 and ICMG-FR2607, Université Joseph Fourier, BP 53, 38041 Grenoble Cédex 9, France
| | | | | | | | | |
Collapse
|
18
|
Tumir LM, Piantanida I, Juranović I, Meić Z, Tomić S, Zinić M. Recognition of homo-polynucleotides containing adenine by a phenanthridinium bis-uracil conjugate in aqueous media. Chem Commun (Camb) 2005:2561-3. [PMID: 15900326 DOI: 10.1039/b500617a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Among novel bis-nucleobase-phenanthridinium conjugates bis-uracil analogue stabilized significantly more effective poly-dA-poly-dT and poly-AH(+)-poly-AH(+) than adenine analogue and reference compound . For the alternating poly-dAdT-poly-dAdT however, the binding preference is lost, pointing to the importance of specific interactions of uracils of with homopolynucleotides containing consecutive adenines.
Collapse
Affiliation(s)
- Lidija-Marija Tumir
- Laboratory of Supramolecular and Nucleoside Chemistry, Department of Chemistry and Biochemistry, Ruder Bosković Institute, HR 10002 Zagreb, P.O.B. 180, Croatia
| | | | | | | | | | | |
Collapse
|