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Różycka D, Kowalczyk A, Denel-Bobrowska M, Kuźmycz O, Gapińska M, Stączek P, Olejniczak AB. Acridine/Acridone-Carborane Conjugates as Strong DNA-Binding Agents with Anticancer Potential. ChemMedChem 2023; 18:e202200666. [PMID: 36734215 DOI: 10.1002/cmdc.202200666] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/02/2023] [Accepted: 02/02/2023] [Indexed: 02/04/2023]
Abstract
Synthesis of acridine derivatives that act as DNA-targeting anticancer agents is an evolving field and has resulted in the introduction of several drugs into clinical trials. Carboranes can be of importance in designing biologically active compounds due to their specific properties. Therefore, a series of novel acridine analogs modified with carborane clusters were synthesized. The DNA-binding ability of these analogs was evaluated on calf thymus DNA (ct-DNA). Results of these analyses showed that 9-[(1,7-dicarba-closo-dodecaborane-1-yl)propylamino]acridine (30) interacted strongly with ct-DNA, indicating its ability to intercalate into DNA, whereas 9-[(1,7-dicarba-closo-dodecaborane-1-yl)propanamido]acridine (29) changed the B-form of ct-DNA to the Z form. Compound 30 demonstrated cytotoxicity, was able to inhibit cell proliferation, arrest the cell cycle in the S phase in the HeLa cancer cell line, and induced the production of reactive oxygen species (ROS). In addition, it was specifically localized in lysosomes and was a weak inhibitor of Topo IIα.
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Affiliation(s)
- Daria Różycka
- Screening Laboratory, Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa St., Łódź, 93-232, Poland
| | - Aleksandra Kowalczyk
- Department of Molecular Microbiology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha St., Łódź, 90-237, Poland
| | - Marta Denel-Bobrowska
- Screening Laboratory, Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa St., Łódź, 93-232, Poland
| | - Olga Kuźmycz
- Department of Molecular Microbiology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha St., Łódź, 90-237, Poland
| | - Magdalena Gapińska
- Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology Environmental Protection, University of Lodz, 12/16 Banacha St., Łódź, 90-237, Poland
| | - Paweł Stączek
- Department of Molecular Microbiology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha St., Łódź, 90-237, Poland
| | - Agnieszka B Olejniczak
- Screening Laboratory, Institute of Medical Biology, Polish Academy of Sciences, 106 Lodowa St., Łódź, 93-232, Poland
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2
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Piccirilli F, Tardani F, D’Arco A, Birarda G, Vaccari L, Sennato S, Casciardi S, Lupi S. Infrared Nanospectroscopy Reveals DNA Structural Modifications upon Immobilization onto Clay Nanotubes. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1103. [PMID: 33923331 PMCID: PMC8147086 DOI: 10.3390/nano11051103] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 12/22/2022]
Abstract
The growing demand for innovative means in biomedical, therapeutic and diagnostic sciences has led to the development of nanomedicine. In this context, naturally occurring tubular nanostructures composed of rolled sheets of alumino-silicates, known as halloysite nanotubes, have found wide application. Halloysite nanotubes indeed have surface properties that favor the selective loading of biomolecules. Here, we present the first, to our knowledge, structural study of DNA-decorated halloysite nanotubes, carried out with nanometric spatially-resolved infrared spectroscopy. Single nanotube absorption measurements indicate a partial covering of halloysite by DNA molecules, which show significant structural modifications taking place upon loading. The present study highlights the constraints for the use of nanostructured clays as DNA carriers and demonstrates the power of super-resolved infrared spectroscopy as an effective and versatile tool for the evaluation of immobilization processes in the context of drug delivery and gene transfer.
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Affiliation(s)
| | - Franco Tardani
- Istituto dei Sistemi Complessi (ISC)-CNR, UOS Roma Sapienza, 00185 Roma, Italy; (F.T.); (S.S.)
| | - Annalisa D’Arco
- Dipartimento di Fisica, “La Sapienza” Universitá di Roma, 00185 Roma, Italy;
- National Institute of Nuclear Physics Section Rome, P.le A. Moro 2, 00185 Roma, Italy
| | - Giovanni Birarda
- Elettra Sincrotrone Trieste, 34149 Trieste, Italy; (G.B.); (L.V.)
| | - Lisa Vaccari
- Elettra Sincrotrone Trieste, 34149 Trieste, Italy; (G.B.); (L.V.)
| | - Simona Sennato
- Istituto dei Sistemi Complessi (ISC)-CNR, UOS Roma Sapienza, 00185 Roma, Italy; (F.T.); (S.S.)
- Dipartimento di Fisica, “La Sapienza” Universitá di Roma, 00185 Roma, Italy;
| | - Stefano Casciardi
- Dipartimento di Medicina, Epidemiologia, Igiene del Lavoro e Ambientale, Istituto Nazionale per l’Assicurazione Contro gli Infortuni sul Lavoro, 00100 Roma, Italy;
| | - Stefano Lupi
- Istituto Officina dei Materiali CNR, 34149 Trieste, Italy;
- Dipartimento di Fisica, “La Sapienza” Universitá di Roma, 00185 Roma, Italy;
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3
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Szafran MJ, Kołodziej M, Skut P, Medapi B, Domagała A, Trojanowski D, Zakrzewska-Czerwińska J, Sriram D, Jakimowicz D. Amsacrine Derivatives Selectively Inhibit Mycobacterial Topoisomerase I (TopA), Impair M. smegmatis Growth and Disturb Chromosome Replication. Front Microbiol 2018; 9:1592. [PMID: 30065714 PMCID: PMC6056748 DOI: 10.3389/fmicb.2018.01592] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/26/2018] [Indexed: 01/21/2023] Open
Abstract
Amsacrine, which inhibits eukaryotic type II topoisomerase via DNA intercalation and stabilization of the cleavable topoisomerase-DNA complex, promotes DNA damage and eventually cell death. Amsacrine has also been shown to inhibit structurally distinct bacterial type I topoisomerases (TopAs), including mycobacterial TopA, the only and essential topoisomerase I in Mycobacterium tuberculosis. Here, we describe the modifications of an amsacrine sulfonamide moiety that presumably interacts with mycobacterial TopA, which notably increased the enzyme inhibition and drug selectivity in vivo. To analyse the effects of amsacrine and its derivatives treatment on cell cycle, we used time-lapse fluorescence microscopy (TLMM) and fusion of the β-subunit of DNA polymerase III with enhanced green fluorescence protein (DnaN-EGFP). We determined that treatment with amsacrine and its derivatives increased the number of DnaN-EGFP complexes and/or prolonged the time of chromosome replication and cell cycle notably. The analysis of TopA depletion strain confirmed that lowering TopA level results in similar disturbances of chromosome replication. In summary, since TopA is crucial for mycobacterial cell viability, the compounds targeting the enzyme disturbed the cell cycle and thus may constitute a new class of anti-tuberculosis drugs.
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Affiliation(s)
- Marcin J Szafran
- Laboratory of Molecular Microbiology, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Marta Kołodziej
- Laboratory of Molecular Microbiology, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Patrycja Skut
- Laboratory of Molecular Microbiology, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Brahmam Medapi
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad, India
| | | | - Damian Trojanowski
- Laboratory of Molecular Microbiology, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Jolanta Zakrzewska-Czerwińska
- Laboratory of Molecular Microbiology, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland.,Laboratory of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad, India
| | - Dagmara Jakimowicz
- Laboratory of Molecular Microbiology, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland.,Laboratory of Microbiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
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4
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Gurudevaru C, Gopalakrishnan M, Senthilkumar K, Hemachandran H, Siva R, Srinivasan T, Velmurugan D, Shanmugan S, Palanisami N. Synthesis and structural and DNA binding studies of mono‐ and dinuclear copper(II) complexes constructed with ─O and ─N donor ligands: Potential anti‐skin cancer drugs. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3998] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Champaka Gurudevaru
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
| | - Mohan Gopalakrishnan
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
- Department of ChemistryKarpagam University Coimbatore 641021 Tamil Nadu India
| | - Kabali Senthilkumar
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
| | | | - Ramamoorthy Siva
- School of Biosciences and TechnologyVIT University Vellore Tamil Nadu India
| | - Thothadri Srinivasan
- CAS in Crystallography and BiophysicsUniversity of Madras, Guindy Maraimalai Campus Chennai 600025 Tamil Nadu India
| | - Devadasan Velmurugan
- CAS in Crystallography and BiophysicsUniversity of Madras, Guindy Maraimalai Campus Chennai 600025 Tamil Nadu India
| | - Swaminathan Shanmugan
- Research Institute and Department of ChemistrySRM University Kattankulathur 603203 Tamil Nadu India
| | - Nallasamy Palanisami
- Department of Chemistry, School of Advanced SciencesVIT University Vellore 632014 Tamil Nadu India
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5
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Yang H, Tang P, Tang B, Huang Y, Xiong X, Li H. Novel poly(ADP-ribose) polymerase inhibitor veliparib: biophysical studies on its binding to calf thymus DNA. RSC Adv 2017. [DOI: 10.1039/c6ra28213j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Veliparib, an new anticancer drug in the class of poly (ADP-ribose) polymerase inhibitors, intercalates partially and binds to ctDNA and induces moderate conformational perturbation of the DNA.
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Affiliation(s)
- Hongqin Yang
- College of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Peixiao Tang
- College of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Bin Tang
- College of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Yanmei Huang
- College of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Xinnuo Xiong
- College of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Hui Li
- College of Chemical Engineering
- Sichuan University
- Chengdu
- China
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6
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Alavijeh NS, Zadmard R, Balalaie S, Alavijeh MS, Soltani N. DNA Binding and Recognition of a CC Mismatch in a DNA Duplex by Water-Soluble Peptidocalix[4]arenes: Synthesis and Applications. Org Lett 2016; 18:4766-4769. [DOI: 10.1021/acs.orglett.6b01995] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nahid S. Alavijeh
- Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran 1496813151, Iran
| | - Reza Zadmard
- Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran 1496813151, Iran
| | - Saeed Balalaie
- Peptide
Chemistry Research Center, K.N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 1969764499, Iran
| | | | - Nima Soltani
- Department
of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
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7
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Structural aspects of the interaction of anticancer drug Actinomycin-D to the GC rich region of hmgb1 gene. Int J Biol Macromol 2016; 87:433-42. [DOI: 10.1016/j.ijbiomac.2016.02.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/22/2016] [Accepted: 02/23/2016] [Indexed: 12/18/2022]
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8
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Ray B, Agarwal S, Lohani N, Rajeswari MR, Mehrotra R. Structural, conformational and thermodynamic aspects of groove-directed-intercalation of flavopiridol into DNA. J Biomol Struct Dyn 2016; 34:2518-35. [DOI: 10.1080/07391102.2015.1118708] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Bhumika Ray
- Academy of Scientific & Innovative Research (AcSIR), CSIR-National Physical Laboratory Campus, New Delhi 110012, India
- Quantum Phenomena and Applications, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Shweta Agarwal
- Academy of Scientific & Innovative Research (AcSIR), CSIR-National Physical Laboratory Campus, New Delhi 110012, India
- Quantum Phenomena and Applications, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Neelam Lohani
- Department of Biochemistry, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India
| | - Moganty R. Rajeswari
- Department of Biochemistry, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029, India
| | - Ranjana Mehrotra
- Academy of Scientific & Innovative Research (AcSIR), CSIR-National Physical Laboratory Campus, New Delhi 110012, India
- Quantum Phenomena and Applications, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
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9
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Bao C, Conde J, Curtin J, Artzi N, Tian F, Cui D. Bioresponsive antisense DNA gold nanobeacons as a hybrid in vivo theranostics platform for the inhibition of cancer cells and metastasis. Sci Rep 2015; 5:12297. [PMID: 26189409 PMCID: PMC4507177 DOI: 10.1038/srep12297] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/23/2015] [Indexed: 12/26/2022] Open
Abstract
Gold nanobeacons can be used as a powerful tool for cancer theranostics. Here, we proposed a nanomaterial platform based on gold nanobeacons to detect, target and inhibit the expression of a mutant Kras gene in an in vivo murine gastric cancer model. The conjugation of fluorescently-labeled antisense DNA hairpin oligonucleotides to the surface of gold nanoparticles enables using their localized surface plasmon resonance properties to directly track the delivery to the primary gastric tumor and to lung metastatic sites. The fluorescently labeled nanobeacons reports on the interaction with the target as the fluorescent Cy3 signal is quenched by the gold nanoparticle and only emit light following conjugation to the Kras target owing to reorganization and opening of the nanobeacons, thus increasing the distance between the dye and the quencher. The systemic administration of the anti-Kras nanobeacons resulted in approximately 60% tumor size reduction and a 90% reduction in tumor vascularization. More important, the inhibition of the Kras gene expression in gastric tumors prevents the occurrence of metastasis to lung (80% reduction), increasing mice survival in more than 85%. Our developed platform can be easily adjusted to hybridize with any specific target and provide facile diagnosis and treatment for neoplastic diseases.
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Affiliation(s)
- Chenchen Bao
- Institute of Nano Biomedicine and Engineering, Key Lab. of Thin Film and Microfabrication Technology of Ministry of Education, Department of instrument science and engineering, School of Electronic Information and Electrical Engineering, National Center for Translational Medicine, Shanghai Jiao Tong University, P.R.China
| | - João Conde
- 1] Massachusetts Institute of Technology, Institute for Medical Engineering and Science, Harvard-MIT Division for Health Sciences and Technology, Cambridge, Massachusetts, USA [2] School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - James Curtin
- School of Food Science and Environmental Health, College of Sciences and Health, Dublin Institute of Technology, Cathal Brugha Street, Dublin, Ireland
| | - Natalie Artzi
- 1] Massachusetts Institute of Technology, Institute for Medical Engineering and Science, Harvard-MIT Division for Health Sciences and Technology, Cambridge, Massachusetts, USA [2] Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Furong Tian
- Focas Research Institute, Dublin Institute of Technology, Camden Row, Dublin, Ireland
| | - Daxiang Cui
- Institute of Nano Biomedicine and Engineering, Key Lab. of Thin Film and Microfabrication Technology of Ministry of Education, Department of instrument science and engineering, School of Electronic Information and Electrical Engineering, National Center for Translational Medicine, Shanghai Jiao Tong University, P.R.China
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10
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Anantharaman A, Priya RR, Hemachandran H, Sivaramakrishna A, Babu S, Siva R. Studies on interaction of norbixin with DNA: multispectroscopic and in silico analysis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 144:163-169. [PMID: 25754392 DOI: 10.1016/j.saa.2015.02.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 02/11/2015] [Accepted: 02/12/2015] [Indexed: 06/04/2023]
Abstract
The interaction of food colorant norbixin with calf thymus DNA (CTDNA) was investigated through UV-Visible spectroscopy, Fourier Transform Infrared (FTIR), Circular Dichroism (CD), Nuclear Magnetic Resonance (NMR), DNA melting studies, electrophoretic analysis, histological staining technique and molecular docking studies. The results indicated that norbixin interacted with CTDNA by partial intercalation mode. The binding constant (K) of norbixin with CTDNA was calculated to be 5.08×10(5) Mol(-1) L. FTIR and CD studies were coupled with (1)H NMR spectra revealed that norbixin intercalates partially and binds to the groove's, phosphate group, deoxyribose sugar of DNA and also induces conformational transition of B-form to A-form DNA. Agarose gel electrophoretic and histological staining technique results further prove that, norbixin specifically binds to the DNA in the cell. Moreover, molecular docking studies on the specific binding of norbixin with CTDNA have exhibited lowest conformation energy score of -3.2. Therefore, this food colorant has the ability to interact with DNA and it could emerge as a promising class of natural DNA targeted therapeutic.
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Affiliation(s)
- Amrita Anantharaman
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Rajendra Rao Priya
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Hridya Hemachandran
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | | | - Subramanian Babu
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Ramamoorthy Siva
- School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India.
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11
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Agarwal S, Chadha D, Mehrotra R. Molecular modeling and spectroscopic studies of semustine binding with DNA and its comparison with lomustine–DNA adduct formation. J Biomol Struct Dyn 2014; 33:1653-68. [DOI: 10.1080/07391102.2014.968874] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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12
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Lohani N, Narayan Singh H, Agarwal S, Mehrotra R, Rajeswari MR. Interaction of adriamycin with a regulatory element ofhmgb1: spectroscopic and calorimetric approach. J Biomol Struct Dyn 2014; 33:1612-23. [DOI: 10.1080/07391102.2014.967301] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Agarwal S, Jangir DK, Mehrotra R, Lohani N, Rajeswari MR. A structural insight into major groove directed binding of nitrosourea derivative nimustine with DNA: a spectroscopic study. PLoS One 2014; 9:e104115. [PMID: 25101667 PMCID: PMC4125164 DOI: 10.1371/journal.pone.0104115] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 07/05/2014] [Indexed: 11/19/2022] Open
Abstract
Nitrosourea therapeutics occupies a definite place in cancer therapy but its exact mechanism of action has yet to be established. Nimustine, a chloroethyl nitrosourea derivative, is used to treat various types of malignancy including gliomas. The present work focuses on the understanding of nimustine interaction with DNA to delineate its mechanism at molecular level. Attenuated total reflection-Fourier transform infrared (ATR-FTIR) has been used to determine the binding sites of nimustine on DNA. Circular dichroism (CD) spectroscopy has been used to confirm conformational variations in DNA molecule upon nimustine-DNA interaction. Thermodynamic parameters of nimustine-DNA reaction have been calculated by isothermal titration calorimetry. Results of the present study demonstrate that nimustine is not a simple alkylating agent rather it causes major grove-directed-alkylation. Spectroscopic data suggest binding of nimustine with nitrogenous bases guanine (C6 = O6) and thymine (C4 = O4) in DNA major groove. CD spectra of nimustine-DNA complexes point toward the perturbation of native B-conformation of DNA and its partial transition into C-form. Thermodynamically, nimustine-DNA interaction is an entropy driven endothermic reaction, which suggests hydrophobic interaction of nimustine in DNA-major groove pocket. Spectral results suggest base binding and local conformational changes in DNA upon nimustine interaction. Investigation of drug-DNA interaction is an essential part of rational drug designing that also provides information about the drug's action at molecular level. Results, demonstrated here, may contribute in the development of new nitrosourea therapeutics with better efficacy and fewer side effects.
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Affiliation(s)
- Shweta Agarwal
- Quantum Optics and Photon Physics, CSIR-National Physical Laboratory, New Delhi, India
| | - Deepak Kumar Jangir
- Quantum Optics and Photon Physics, CSIR-National Physical Laboratory, New Delhi, India
| | - Ranjana Mehrotra
- Quantum Optics and Photon Physics, CSIR-National Physical Laboratory, New Delhi, India
- * E-mail:
| | - Neelam Lohani
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - M. R. Rajeswari
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
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