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Akiyama Y, Kimura K, Komatsu S, Takarada T, Maeda M, Kikuchi A. A Simple Colorimetric Assay of Bleomycin-Mediated DNA Cleavage Utilizing Double-Stranded DNA-Modified Gold Nanoparticles. Chembiochem 2023; 24:e202200451. [PMID: 36156837 PMCID: PMC10092608 DOI: 10.1002/cbic.202200451] [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: 08/04/2022] [Revised: 09/23/2022] [Indexed: 01/05/2023]
Abstract
A colorimetric assay of DNA cleavage by bleomycin (BLM) derivatives was developed utilizing high colloidal stability on double-stranded (ds) DNA-modified gold nanoparticles (dsDNA-AuNPs) possessing a cleavage site. The assay was performed using dsDNA-AuNPs treated with inactive BLM or activated BLM (Fe(II)⋅BLM). A 10-min exposure in dsDNA-AuNPs with inactive BLM treatment resulted in a rapid color change from red to purple because of salt-induced non-crosslinking aggregation of dsDNA-AuNPs. In contrast, the addition of active Fe(II)⋅BLM retained the red color, probably because of the formation of protruding structures at the outermost phase of dsDNA-AuNPs caused by BLM-mediated DNA cleavage. Furthermore, the results of our model experiments indicate that oxidative base release and DNA-cleavage pathways could be visually distinguished with color change. The present methodology was also applicable to model screening assays using several drugs with different mechanisms related to antitumor activity. These results strongly suggest that this assay with a rapid color change could lead to simple and efficient screening of potent antitumor agents.
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Affiliation(s)
- Yoshitsugu Akiyama
- Katsushika Division, Institute of Arts and Sciences, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan.,Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Kazunori Kimura
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Syuuhei Komatsu
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
| | - Tohru Takarada
- Surface and Interface Science Laboratory, RIKEN, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
| | - Mizuo Maeda
- RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, 351-0198, Wako, Saitama, Japan
| | - Akihiko Kikuchi
- Department of Materials Science and Technology, Graduate School of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, 125-8585, Katsushika, Tokyo, Japan
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2
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Liu Y, Ma Z, Zhao X, Shan Q, He P, Du Y, Wang Y. Simple and Efficient Synthesis of Anithiactins A‐C, Thiasporine A and Their Potent Antitumor 2,4‐Linked Oligothiazole Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201803664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yi Liu
- School of Chemistry and Chemical EngineeringYantai University Yantai 264005 China
| | - Zhanwei Ma
- School of Chemistry and Chemical EngineeringYantai University Yantai 264005 China
| | - Xiangyun Zhao
- School of Chemistry and Chemical EngineeringYantai University Yantai 264005 China
| | - Qiuli Shan
- School of Biological Science and TechnologyUniversity of Jinan Jinan 250022 China
| | - Peng He
- State Key Laboratory of Environmental Chemistry and Eco-toxicologyResearch Center for Eco-Environmental SciencesChinese Academy of Sciences Beijing 100085 China
| | - Yuguo Du
- State Key Laboratory of Environmental Chemistry and Eco-toxicologyResearch Center for Eco-Environmental SciencesChinese Academy of Sciences Beijing 100085 China
| | - Yibin Wang
- Key Laboratory of Marine Ecology and Environmental Science and EngineeringFirst Institute of Oceanography State Oceanic Administration Qingdao 266061 China
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3
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Synthesis, cytotoxicity and anti-metastatic properties of new pyridyl-thiazole arene ruthenium(II) complexes. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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Zha L, Wilson MR, Brotherton CA, Balskus EP. Characterization of Polyketide Synthase Machinery from the pks Island Facilitates Isolation of a Candidate Precolibactin. ACS Chem Biol 2016; 11:1287-95. [PMID: 26890481 DOI: 10.1021/acschembio.6b00014] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Colibactin is a human gut bacterial genotoxin of unknown structure that has been linked to colon cancer. The biosynthesis of this elusive metabolite is directed by the pks gene cluster, which encodes a hybrid nonribosomal peptide synthetase-polyketide synthase (NRPS-PKS) assembly line that is hypothesized to use the unusual polyketide building block aminomalonate. This biosynthetic pathway is thought to initially produce an inactive intermediate (precolibactin) that is processed to the active toxin. Here, we report the first in vitro biochemical characterization of the PKS components of the pks enzymatic assembly line. We evaluate PKS extender unit utilization and show that ClbG, a freestanding acyltransferase (AT) from the pks gene cluster, recognizes aminomalonyl-acyl carrier protein (AM-ACP) and transfers this building block to multiple PKS modules, including a cis-AT PKS ClbI. We also use genetics to explore the in vivo role of ClbG in colibactin and precolibactin biosynthesis. Unexpectedly, production of previously identified pks-associated metabolites is dramatically increased in a ΔclbP/ΔclbG mutant strain, enabling the first structure elucidation of a bithiazole-containing candidate precolibactin. This work provides new insights into the unusual biosynthetic capabilities of the pks gene cluster, offers further support for the hypothesis that colibactin directly damages DNA, and suggests that additional, uncharacterized pks-derived metabolites containing aminomalonate play critical roles in genotoxicity.
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Affiliation(s)
- Li Zha
- Department of Chemistry and
Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Matthew R. Wilson
- Department of Chemistry and
Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Carolyn A. Brotherton
- Department of Chemistry and
Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Emily P. Balskus
- Department of Chemistry and
Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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5
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Grozav A, Balacescu O, Balacescu L, Cheminel T, Berindan-Neagoe I, Therrien B. Synthesis, Anticancer Activity, and Genome Profiling of Thiazolo Arene Ruthenium Complexes. J Med Chem 2015; 58:8475-90. [PMID: 26488797 DOI: 10.1021/acs.jmedchem.5b00855] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Sixteen hydrazinyl-thiazolo arene ruthenium complexes of the general formula [(η(6)-p-cymene)Ru(N,N'-hydrazinyl-thiazolo)Cl]Cl were synthesized. All complexes were tested in vitro for their antiproliferative activity on three tumor cell lines (HeLa, A2780, and A2780cisR) and on a noncancerous cell line (HFL-1). A superior cytotoxic activity of the ruthenium complexes as compared to cisplatin and oxaliplatin, on both cisplatin-sensitive and cisplatin resistant ovarian cancer cells, was observed. In addition, the biological activity of two selected derivatives was evaluated using microarray gene expression assay and ingenuity pathway analysis. p53 signaling was identified as an important pathway modulated by both arene ruthenium compounds. New activated molecules such as FAS, ZMAT3, PRMT2, BBC3/PUMA, and PDCD4, whose overexpressions are correlated with overcoming resistance to cisplatin therapy, were also identified as potential targets. Moreover, the arene ruthenium complexes can be used in association with cisplatin to prevent cisplatin resistance development and synergistically to induce cell death in ovarian cancer cells.
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Affiliation(s)
- Adriana Grozav
- Faculty of Pharmacy, "Iuliu Hatieganu" University of Medicine and Pharmacy , Victor Babes Str. 41, RO-400012 Cluj-Napoca, Romania
| | - Ovidiu Balacescu
- Department of Functional Genomics, Proteomics and Experimental Pathology, The Oncology Institute "Prof Dr. Ion Chiricuta" , 34-36 Republicii Str, RO-400015, Cluj-Napoca, Romania
| | - Loredana Balacescu
- Department of Functional Genomics, Proteomics and Experimental Pathology, The Oncology Institute "Prof Dr. Ion Chiricuta" , 34-36 Republicii Str, RO-400015, Cluj-Napoca, Romania
| | - Thomas Cheminel
- Institut de Chimie, Université de Neuchâtel , 51 Avenue de Bellevaux, CH-2000 Neuchâtel, Switzerland
| | - Ioana Berindan-Neagoe
- Department of Functional Genomics, Proteomics and Experimental Pathology, The Oncology Institute "Prof Dr. Ion Chiricuta" , 34-36 Republicii Str, RO-400015, Cluj-Napoca, Romania.,Research Center of Functional Genomics, Biomedicine and Translational Medicine, "Iuliu Hatieganu″ University of Medicine and Pharmacy , 23 Marinescu Str, RO-400337 Cluj-Napoca, Romania
| | - Bruno Therrien
- Institut de Chimie, Université de Neuchâtel , 51 Avenue de Bellevaux, CH-2000 Neuchâtel, Switzerland
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6
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Novel pyrazole fused heterocyclic ligands: Synthesis, characterization, DNA binding/cleavage activity and anti-BVDV activity. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.01.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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7
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Synthesis, DNA-cleaving activities and cytotoxicities of the copper(II) complexes of pyrrole-polyamide dimers tethered with carboxylate-containing linkers. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Yang JW, Lin YL, Dong C, Zhou CQ, Chen JX, Wang B, Zhou ZZ, Sun B, Chen WH. Synthesis, hydrolytic DNA-cleaving activities and cytotoxicities of EDTA analogue-tethered pyrrole-polyamide dimer-based Ce(IV) complexes. Eur J Med Chem 2014; 87:168-74. [PMID: 25247773 DOI: 10.1016/j.ejmech.2014.09.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/16/2014] [Accepted: 09/17/2014] [Indexed: 12/31/2022]
Abstract
Two EDTA analogue-tethered C2-symmetrical dimeric monopyrrole-polyamide 5 and dipyrrole-polyamide 6, and their corresponding Ce(IV) complexes Ce-5 and Ce-6 were synthesized and fully characterized. Agarose gel electrophoresis studies on pBR322 DNA cleavage indicate that complexes Ce-5 and Ce-6 exhibited potent DNA-cleaving activities under physiological conditions. The maximal first-order rate constants (kmax's) were (0.42 ± 0.02) h(-1) for Ce-5 and (0.52 ± 0.02) h(-1) for Ce-6, respectively, suggesting that both complexes catalyzed the cleavage of supercoiled DNA by up to approximately 10(8)-fold. Complex Ce-6 exhibited ca 10-fold higher overall catalytic activity (kmax/KM) than Ce-5, which may be ascribed to its higher DNA-binding affinity. Inhibition experiments and a model study convincingly suggest that both complexes Ce-5 and Ce-6 functioned as hydrolytic DNA-cleavers. In addition, both complexes were found to display moderate inhibitory activity toward A549 and HepG-2 cells.
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Affiliation(s)
- Jian-Wei Yang
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Yan-Ling Lin
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Cheng Dong
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Chun-Qiong Zhou
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
| | - Jin-Xiang Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Bo Wang
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Zhong-Zhen Zhou
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Bin Sun
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Wen-Hua Chen
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
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9
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Synthesis, DNA-cleaving activities and cytotoxicities of C2-symmetrical dipyrrole-polyamide dimer-based Cu(II) complexes: A comparative study. Eur J Med Chem 2013; 66:508-15. [DOI: 10.1016/j.ejmech.2013.06.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 06/04/2013] [Accepted: 06/07/2013] [Indexed: 12/19/2022]
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10
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Banerjee S, Veale EB, Phelan CM, Murphy SA, Tocci GM, Gillespie LJ, Frimannsson DO, Kelly JM, Gunnlaugsson T. Recent advances in the development of 1,8-naphthalimide based DNA targeting binders, anticancer and fluorescent cellular imaging agents. Chem Soc Rev 2013; 42:1601-18. [DOI: 10.1039/c2cs35467e] [Citation(s) in RCA: 492] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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11
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Zhou CQ, Lin YL, Chen JX, Wang LS, Yang NN, Zeng W, Chen WH. Facile synthesis of a dimeric dipyrrole–polyamide and synergetic DNA-cleaving activity of its Cu(II) complex. Bioorg Med Chem Lett 2012; 22:5853-6. [DOI: 10.1016/j.bmcl.2012.07.085] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 07/16/2012] [Accepted: 07/24/2012] [Indexed: 11/25/2022]
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12
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Aggarwal R, Sumran G, Kumar V, Mittal A. Copper(II) chloride mediated synthesis and DNA photocleavage activity of 1-aryl/heteroaryl-4-substituted-1,2,4-triazolo[4,3-a]quinoxalines. Eur J Med Chem 2011; 46:6083-8. [DOI: 10.1016/j.ejmech.2011.10.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 10/04/2011] [Accepted: 10/14/2011] [Indexed: 11/26/2022]
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13
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Sreekanth B, Krishnamurthy G, Naik HSB, Vishnuvardhan TK, Vinaykumar B, Sharath N. Synthesis, DNA binding, and oxidative cleavage studies of Fe(II) and Co(III) complexes containing bioactive ligands. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2011; 30:83-96. [PMID: 21360407 DOI: 10.1080/15257770.2010.547544] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The two complexes containing bioactive ligands of the type and [Fe(L)] (PF(6))(2) (1) (where L = [1-{[2-{[2-hydroxynaphthalen-1-yl)methylidine]amino}phenyl)imino] methyl}naphthalene-2-ol]) and [Co(L(1)L(2))] (PF(6))(3) (2) (where L(1)L(2) = mixed ligand of 2-seleno-4-methylquinoline and 1,10-phenanthroline in the ratio 1:2, respectively) were synthesized and structurally characterized. The DNA binding property of the complexes with calf thymus DNA has been investigated using absorption spectra, viscosity measurements, and thermal denaturation experiments. Intrinsic binding constant K(b) has been estimated at room temperature. The absorption spectral studies indicate that the complexes intercalate between the base pairs of the CT-DNA tightly with intrinsic DNA binding constant of 2.8 × 10(5) M(-1) for (1) and 4.8 × 10(5) M(-1) for (2) in 5 mM Tris-HCl/50 mM NaCl buffer at pH 7.2, respectively. The oxidative cleavage activity of (1) and (2) were studied by using gel electrophoresis and the results show that complexes have potent nuclease activity.
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Affiliation(s)
- B Sreekanth
- Department of Biotechnology, Acharya Institute of Technology, Bangalore, Karnataka, India
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14
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Hussain A, Lahiri D, Ameerunisha Begum MS, Saha S, Majumdar R, Dighe RR, Chakravarty AR. Photocytotoxic Lanthanum(III) and Gadolinium(III) Complexes of Phenanthroline Bases Showing Light-Induced DNA Cleavage Activity. Inorg Chem 2010; 49:4036-45. [DOI: 10.1021/ic901791f] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | | | | | - Sounik Saha
- Department of Inorganic and Physical Chemistry
| | | | - Rajan R. Dighe
- Department of Molecular Reproduction, Development, and Genetics
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15
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Fernandes L, Fischer FL, Ribeiro CW, Silveira GP, Sá MM, Nome F, Terenzi H. Metal-free artificial nucleases based on simple oxime and hydroxylamine scaffolds. Bioorg Med Chem Lett 2008; 18:4499-502. [DOI: 10.1016/j.bmcl.2008.07.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Revised: 07/11/2008] [Accepted: 07/14/2008] [Indexed: 10/21/2022]
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16
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Ma Q, Xu Z, Schroeder BR, Sun W, Wei F, Hashimoto S, Konishi K, Leitheiser CJ, Hecht SM. Biochemical evaluation of a 108-member deglycobleomycin library: viability of a selection strategy for identifying bleomycin analogues with altered properties. J Am Chem Soc 2007; 129:12439-52. [PMID: 17887752 DOI: 10.1021/ja0722729] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The bleomycins (BLMs) are clinically used glycopeptide antitumor antibiotics that have been shown to mediate the sequence-selective oxidative damage of both DNA and RNA. Previously, we described the solid-phase synthesis of a library of 108 unique analogues of deglycoBLM A6, a congener that cleaves DNA analogously to BLM itself. Each member of the library was assayed for its ability to effect single- and double-strand nicking of duplex DNA, sequence-selective DNA cleavage, and RNA cleavage in the presence and absence of a metal ion cofactor. All of the analogues tested were found to mediate concentration-dependent plasmid DNA relaxation to some extent, and a number exhibited double-strand cleavage with an efficiency comparable to or greater than deglycoBLM A6. Further, some analogues having altered linker and metal-binding domains mediated altered sequence-selective cleavage, and a few were found to cleave a tRNA3Lys transcript both in the presence and in the absence of a metal cofactor. The results provide insights into structural elements within BLM that control DNA and RNA cleavage. The present study also permits inferences to be drawn regarding the practicality of a selection strategy for the solid-phase construction and evaluation of large libraries of BLM analogues having altered properties.
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Affiliation(s)
- Qian Ma
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, USA
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17
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Liu Y, Wu F, Zou G. Electrophoresis mobility shift assay and biosensor used in studying the interaction between bleomycin A5 and DNA. Anal Chim Acta 2007; 599:310-4. [PMID: 17870295 DOI: 10.1016/j.aca.2007.07.064] [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] [Received: 06/17/2007] [Revised: 07/20/2007] [Accepted: 07/27/2007] [Indexed: 11/26/2022]
Abstract
DNA is the potential target of numerous drugs utilized widely in clinical cancer therapy. Here we employed bleomycin A5, with its deactivated form as contrast, to investigate the interaction between small pharmaceutical and DNA. Electrophoresis mobility shift assay (EMSA) which is a common technique used in studying specific interactions between DNA and proteins is applied in visualizing the binding of bleomycin A5 with DNA intuitively. More accurate association equilibrium constant for native and deactivated bleomycin A5 to DNA achieved on biosensor IAsys AUTO+ is 1.25x10(4) and 1.3x10(3) M(-1), respectively. With combination of EMSA and biosensor, a qualitative and quantitative method is described, which can be extended to studying the binding of most small molecules with targeting DNA and serves as a powerful tool in designing and screening for novel drugs.
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Affiliation(s)
- Yanbin Liu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, China
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18
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Liszkiewicz H, Kowalska MW, Wietrzyk J. Synthesis and Antiproliferative Activity in vitro of New Tricyclic 2-Thioxo-1 H ,3 H -imidazo[4,5-b]pyridine Derivatives. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500600892594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Hanna Liszkiewicz
- a Department of Drugs Technology , Wroclaw Medical University , Poland
| | | | - Joanna Wietrzyk
- c Institute of Immunology and Experimental Therapy, Polish Academy of Sciences , Wroclaw , Poland
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19
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Li Z, Yang Q, Qian X. Novel thiazonaphthalimides as efficient antitumor and DNA photocleaving agents: Effects of intercalation, side chains, and substituent groups. Bioorg Med Chem 2005; 13:4864-70. [PMID: 15925513 DOI: 10.1016/j.bmc.2005.05.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2005] [Revised: 05/03/2005] [Accepted: 05/03/2005] [Indexed: 11/24/2022]
Abstract
A series of novel antitumor and DNA photocleaving agents was designed and synthesized by fusing a (substituted) thiazole ring to the naphthalimide skeletons. C1, the most active compound against A549, was about 30-fold more cytotoxic than the compound amonafide. A1, the most active compound against P388, was about 6-fold more cytotoxic than amonafide. C2, the most efficient DNA intercalator, showed the strongest DNA photocleaving activity via superoxide anion produced under UV light at 360 nm.
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Affiliation(s)
- Zhigang Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
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20
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Li Z, Yang Q, Qian X. Synthesis, antitumor evaluation and DNA photocleaving activity of novel methylthiazonaphthalimides with aminoalkyl side chains. Bioorg Med Chem Lett 2005; 15:3143-6. [PMID: 15876532 DOI: 10.1016/j.bmcl.2005.04.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2005] [Revised: 04/05/2005] [Accepted: 04/08/2005] [Indexed: 11/24/2022]
Abstract
A series of methylthiazonaphthalimides was synthesized and quantitatively evaluated as efficient DNA intercalators, antitumor agents and DNA photocleavers. A(1) showed both efficient antitumor activities against cell lines of A549 and P388 with IC50 of 82.8 and 31 nM, respectively. A(3) was the strongest antitumor agent against A549 with the IC50 of 20.8 nM. A(2), the most efficient DNA intercalator, was found to be the strongest DNA photocleaver via superoxide anion. An explanation was given for the disaccord between antitumor and DNA photocleaving activities.
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Affiliation(s)
- Zhigang Li
- State Key Lab. of Fine Chemicals, Dalian University of Technology, PO Box 158, Zhongshan Road, Dalian 116012, China
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21
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Patra AK, Nethaji M, Chakravarty AR. Red-light photosensitized cleavage of DNA by (l-lysine)(phenanthroline base)copper(ii) complexes. Dalton Trans 2005:2798-804. [PMID: 16075123 DOI: 10.1039/b506310h] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Ternary copper(II) complexes [Cu(l-lys)B(ClO4)](ClO4)(1-4), where B is a heterocyclic base, viz. 2,2'-bipyridine (bpy, 1), 1,10-phenanthroline (phen, 2), dipyrido[3,2-d:2',3'-f]quinoxaline (dpq, 3) and dipyrido[3,2-a:2',3'-c]phenazene (dppz, 4), are prepared and their DNA binding and photo-induced DNA cleavage activity studied (l-lys =l-lysine). Complex 2, structurally characterized by X-ray crystallography, shows a square-pyramidal (4 + 1) coordination geometry in which the N,O-donor l-lysine and N,N-donor heterocyclic base bind at the basal plane and the perchlorate ligand is bonded at the elongated axial site. The crystal structure shows the presence of a pendant cationic amine moiety -(CH2)4NH3+ of l-lysine. The one-electron paramagnetic complexes display a d-d band in the range of 598-762 nm in DMF and exhibit cyclic voltammetric response due to Cu(II)/Cu(I) couple in the range of 0.07 to -0.20 V vs. SCE in DMF-Tris-HCl buffer. The complexes having phenanthroline bases display good binding propensity to the calf thymus DNA giving an order: 4 (dppz) > 3 (dpq) > 2 (phen)>> 1 (bpy). Control cleavage experiments using pUC19 supercoiled DNA and distamycin suggest major groove binding for the dppz and minor groove binding for the other complexes. Complexes 2-4 show efficient DNA cleavage activity on UV (365 nm) or visible light (694 nm ruby laser) irradiation via a mechanistic pathway involving formation of singlet oxygen as the reactive species. The amino acid l-lysine bound to the metal shows photosensitizing effect at red light, while the heterocyclic bases are primarily DNA groove binders. The dpq and dppz ligands display red light-induced photosensitizing effects in copper-bound form.
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Affiliation(s)
- Ashis K Patra
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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22
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Krchňák V, Slough GA. Polymer-supported N-benzyl- and N-benzhydryl-2-nitrobenzenesulfonamides as alternative to aldehyde linkers. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Naphthalimide–thiazoles as novel photonucleases: molecular design, synthesis, and evaluation. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2003.11.145] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Rishel MJ, Thomas CJ, Tao ZF, Vialas C, Leitheiser CJ, Hecht SM. Conformationally constrained analogues of bleomycin A5. J Am Chem Soc 2003; 125:10194-205. [PMID: 12926941 DOI: 10.1021/ja030057w] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The bleomycin (BLM) group antitumor antibiotics are glycopeptide-derived natural products shown to cause sequence selective lesions in DNA. Prior studies have indicated that the linker region, composed of the methylvalerate and threonine residues, may be responsible for a conformational bend in the agent required for efficient DNA cleavage. We have synthesized a number of conformationally constrained methylvalerate analogues and incorporated them into deglycobleomycin A(5) congeners using our recently reported procedure for the solid phase construction of (deglyco)bleomycin and its analogues. These analogues were designed to probe the effects of conformational constraint of the native valerate moiety. Initial experiments indicated that the constrained molecules, none of which mimic the conformation proposed for the natural valerate linker, possessed DNA cleavage activity, albeit with potencies less than that of (deglyco)BLM and lacking sequence selectivity. Further experiments demonstrated that these analogues failed to produce alkali-labile lesions in DNA or sequence selective oxidative damage in RNA. However, two of the conformationally constrained deglycoBLM analogues were shown to mediate RNA cleavage in the absence of added Fe(2+). The ability of the analogues to mediate the oxygenation of small molecules was also assayed, and it was shown that they were as competent in the transfer of oxygen to low molecular weight substrates as the parent compound.
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Affiliation(s)
- Michael J Rishel
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
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Leitheiser CJ, Smith KL, Rishel MJ, Hashimoto S, Konishi K, Thomas CJ, Li C, McCormick MM, Hecht SM. Solid-phase synthesis of bleomycin group antibiotics. Construction of a 108-member deglycobleomycin library. J Am Chem Soc 2003; 125:8218-27. [PMID: 12837092 DOI: 10.1021/ja021388w] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The bleomycins (BLMs) are structurally related glycopeptide antibiotics isolated from Streptomyces verticillus that mediate the sequence-selective oxidative damage of DNA and RNA. Deglycobleomycin, which lacks the carbohydrate moiety, cleaves DNA analogously to bleomycin itself, albeit less potently, and has been used successfully for analyzing the functional domains of bleomycin. Although structural modifications to bleomycin and deglycobleomycin have been reported, no bleomycin or deglycobleomycin analogue having enhanced DNA cleavage activity has yet been described. The successful synthesis of a deglycobleomycin on a solid support has permitted the facile solid-phase synthesis of 108 unique deglycobleomycin analogues through parallel solid-phase synthesis. Each of the deglycobleomycin analogues was synthesized efficiently; the purity of each crude product was greater than 60%, as determined by HPLC integration. The solid-phase synthesis of the deglycobleomycin library provided near-milligram to milligram quantities of each deglycobleomycin, thereby permitting characterization by (1)H NMR and high-resolution mass spectrometry. Each analogue demonstrated supercoiled plasmid DNA relaxation above background cleavage; the library included two analogues that mediated plasmid relaxation to a greater extent than the parent deglycobleomycin molecule.
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Hwu JR, Tsay SC, Hong SC, Leu YJ, Liu CF, Chou SSP. Oxime esters of anthraquinone as photo-induced DNA-cleaving agents for single- and double-strand scissions. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00375-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Thomas CJ, Chizhov AO, Leitheiser CJ, Rishel MJ, Konishi K, Tao ZF, Hecht SM. Solid-phase synthesis of bleomycin A(5) and three monosaccharide analogues: exploring the role of the carbohydrate moiety in RNA cleavage. J Am Chem Soc 2002; 124:12926-7. [PMID: 12405801 DOI: 10.1021/ja0208916] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The solid-phase synthesis of bleomycin A5 (BLM A5) and three monosaccharide analogues is presented. The monosaccharide analogues incorporated alpha-d-mannose, alpha-l-gulose, and alpha-l-rhamnose moieties in lieu of the disaccharide normally present in BLM A5. Also explored were the abilities of each of the monosaccharide congeners to cleave a 53-nt RNA. The elaboration of these carbohydrate-modified bleomycin analogues helps to define the role of the disaccharide moiety during the RNA cleavage event. The relatively facile solid-phase synthesis of bleomycin A5 and each of the carbohydrate analogues constitutes an important advance in the continuing mechanistic studies of bleomycin.
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Affiliation(s)
- Craig J Thomas
- Department of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22901, USA
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