1
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Sakai K, Soshima T, Hirose Y, Ishibashi F, Hirao S. Design, synthesis, and biological evaluation of novel benzo[6,7]indolo[3,4-c]isoquinolines as anticancer agents with topoisomerase I inhibition. Bioorg Med Chem Lett 2024; 104:129710. [PMID: 38518997 DOI: 10.1016/j.bmcl.2024.129710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
A novel series of benzo[6,7]indolo[3,4-c]isoquinolines 3a-3f was designed by scaffold hopping of topoisomerase I inhibitor benzo[g][1]benzopyrano[4,3-b]indol-6(13H)-ones (BBPIs), which were developed by structural modification of the natural marine product lamellarin. The unconventional pentacycle was constructed by Bischler-Napieralski-type condensation of amide 11 and subsequent intramolecular Heck reaction. In vitro anticancer activity of the synthesized benzo[6,7]indolo[3,4-c]isoquinolines was evaluated on a panel of 39 human cancer cell lines (JFCR39). Among the compounds tested, N-(3-morpholinopropyl) derivative 3e showed the most potent antiproliferative activity, with a mean GI50 value of 39 nM. This compound inhibited topoisomerase I activity by stabilizing the enzyme-DNA complex.
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Affiliation(s)
- Kie Sakai
- Faculty of Fisheries, Nagasaki University, Nagasaki, Japan
| | - Taisei Soshima
- Faculty of Fisheries, Nagasaki University, Nagasaki, Japan
| | - Yuki Hirose
- Faculty of Fisheries, Nagasaki University, Nagasaki, Japan
| | - Fumito Ishibashi
- Faculty of Fisheries, Nagasaki University, Nagasaki, Japan; Graduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, Japan
| | - Shotaro Hirao
- Faculty of Science and Technology, Oita University, Dannoharu, Japan.
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2
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Abstract
Topoisomerases are enzymes that play essential roles in DNA replication, transcription, chromosome segregation, and recombination. All cells have two major forms of DNA topoisomerases: type I enzymes, which make single-stranded cuts in DNA, and type II enzymes, which cut and decatenate double-stranded DNA. DNA topoisomerases are important targets of approved and experimental anti-cancer agents. Provided in this article are protocols to assess activities of topoisomerases and their inhibitors. Included are an assay for topoisomerase I activity based on relaxation of supercoiled DNA; an assay for topoisomerase II based on the decatenation of double-stranded DNA; and approaches for enriching and quantifying DNA-protein covalent complexes formed as obligatory intermediates in the reactions of type I and II topoisomerases with DNA; and assays for measuring DNA cleavage in vitro. Topoisomerases are not the only proteins that form covalent adducts with DNA in living cells, and the approaches described here are likely to find use in characterizing other protein-DNA adducts and exploring their utility as targets for therapy. © 2021 Wiley Periodicals LLC. Basic Protocol 1: Assay of topoisomerase I activity Basic Protocol 2: Assay of topoisomerase II activity Basic Protocol 3: In vivo determination of topoisomerase covalent complexes using the in vivo complex of enzyme (ICE) assay Support Protocol 1: Preparation of mouse tissue for determination of topoisomerase covalent complexes using the ICE assay Support Protocol 2: Using recombinant topoisomerase standard for absolute quantification of cellular TOP2CC Basic Protocol 4: Quantification of topoisomerase-DNA covalent complexes by RADAR/ELISA: The rapid approach to DNA adduct recovery (RADAR) combined with the enzyme-linked immunosorbent assay (ELISA) Basic Protocol 5: Analysis of protein-DNA covalent complexes by RADAR/Western Support Protocol 3: Adduct-Seq to characterize adducted DNA Support Protocol 4: Nuclear fractionation and RNase treatment to reduce sample complexity Basic Protocol 6: Determination of DNA cleavage by purified topoisomerase I Basic Protocol 7: Determination of inhibitor effects on DNA cleavage by topoisomerase II using a plasmid linearization assay Alternate Protocol: Gel electrophoresis determination of topoisomerase II cleavage.
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Affiliation(s)
- John L Nitiss
- Pharmaceutical Sciences Department, University of Illinois College of Pharmacy, Rockford, Illinois
| | - Kostantin Kiianitsa
- Departments of Immunology and Biochemistry, University of Washington, Seattle, Washington
| | - Yilun Sun
- Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, NCI, NIH, Bethesda, Maryland
| | - Karin C Nitiss
- Pharmaceutical Sciences Department, University of Illinois College of Pharmacy, Rockford, Illinois.,Biomedical Sciences Department, University of Illinois College of Medicine, Rockford, Illinois
| | - Nancy Maizels
- Departments of Immunology and Biochemistry, University of Washington, Seattle, Washington
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3
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Petersen KV, Selas A, Hymøller KM, Mizielinski K, Thorsager M, Stougaard M, Alonso C, Palacios F, Pérez-Pertejo Y, Reguera RM, Balaña-Fouce R, Knudsen BR, Tesauro C. Simple and Fast DNA Based Sensor System for Screening of Small-Molecule Compounds Targeting Eukaryotic Topoisomerase 1. Pharmaceutics 2021; 13:1255. [PMID: 34452216 PMCID: PMC8401307 DOI: 10.3390/pharmaceutics13081255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/04/2021] [Accepted: 08/11/2021] [Indexed: 11/18/2022] Open
Abstract
Background: Eukaryotic topoisomerase 1 is a potential target of anti-parasitic and anti-cancer drugs. Parasites require topoisomerase 1 activity for survival and, consequently, compounds that inhibit topoisomerase 1 activity may be of interest. All effective topoisomerase 1 drugs with anti-cancer activity act by inhibiting the ligation reaction of the enzyme. Screening for topoisomerase 1 targeting drugs, therefore, should involve the possibility of dissecting which step of topoisomerase 1 activity is affected. Methods: Here we present a novel DNA-based assay that allows for screening of the effect of small-molecule compounds targeting the binding/cleavage or the ligation steps of topoisomerase 1 catalysis. This novel assay is based on the detection of a rolling circle amplification product generated from a DNA circle resulting from topoisomerase 1 activity. Results: We show that the binding/cleavage and ligation reactions of topoisomerase 1 can be investigated separately in the presented assay termed REEAD (C|L) and demonstrate that the assay can be used to investigate, which of the individual steps of topoisomerase 1 catalysis are affected by small-molecule compounds. The assay is gel-free and the results can be detected by a simple colorimetric readout method using silver-on-gold precipitation rendering large equipment unnecessary. Conclusion: REEAD (C|L) allows for easy and quantitative investigations of topoisomerase 1 targeting compounds and can be performed in non-specialized laboratories.
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Affiliation(s)
- Kamilla Vandsø Petersen
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark; (K.V.P.); (K.M.H.); (B.R.K.)
- Department of Clinical Medicine, Aarhus University, 8000 Aarhus, Denmark;
| | - Asier Selas
- Department of Organic Chemistry, University of Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain; (A.S.); (C.A.); (F.P.)
| | - Kirstine Mejlstrup Hymøller
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark; (K.V.P.); (K.M.H.); (B.R.K.)
| | | | - Maria Thorsager
- VPCIR Biosciences ApS., 8000 Aarhus, Denmark; (K.M.); (M.T.)
| | - Magnus Stougaard
- Department of Clinical Medicine, Aarhus University, 8000 Aarhus, Denmark;
- VPCIR Biosciences ApS., 8000 Aarhus, Denmark; (K.M.); (M.T.)
- Department of Pathology, Aarhus University Hospital, 8000 Aarhus, Denmark
| | - Concepcion Alonso
- Department of Organic Chemistry, University of Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain; (A.S.); (C.A.); (F.P.)
| | - Francisco Palacios
- Department of Organic Chemistry, University of Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain; (A.S.); (C.A.); (F.P.)
| | - Yolanda Pérez-Pertejo
- Department of Biomedical Sciences, University of Leon (ULE), 24071 Leon, Spain; (Y.P.-P.); (R.M.R.); (R.B.-F.)
| | - Rosa M. Reguera
- Department of Biomedical Sciences, University of Leon (ULE), 24071 Leon, Spain; (Y.P.-P.); (R.M.R.); (R.B.-F.)
| | - Rafael Balaña-Fouce
- Department of Biomedical Sciences, University of Leon (ULE), 24071 Leon, Spain; (Y.P.-P.); (R.M.R.); (R.B.-F.)
| | - Birgitta R. Knudsen
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark; (K.V.P.); (K.M.H.); (B.R.K.)
- VPCIR Biosciences ApS., 8000 Aarhus, Denmark; (K.M.); (M.T.)
| | - Cinzia Tesauro
- VPCIR Biosciences ApS., 8000 Aarhus, Denmark; (K.M.); (M.T.)
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4
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Cai X, Huang W, Huang Y, Xia L, Liu M, Wang M, Wang W, Li Q. Design, Synthesis and Biological Evaluation of Camptothecin Conjugated with NSAIDs as Novel Dual-actin Antitumor Agents. LETT DRUG DES DISCOV 2019. [DOI: 10.2174/1570180816666190221103257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objective:
The single-agent therapy was unable to provide an effective control of the
malignant process, a well-established strategy to improve the efficacy of antitumor therapy is the
rational design of drug combinations aimed at achieving synergistic effects.
Objective:
The objective of this study is generating the new potential anticancer agents with
synergistic activity. Owing to the unique mechanism of action of Camptothecin (CPT), it has shown
abroad spectrum of anti-cancer activity against human malignancies, and growing evidence revealed
that Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) reduce the risk of different kinds of cancers.
So four CPT-NSAIDs conjugates were synthesized and evaluated.
Methods:
In this study, a series of novel CPT - NSAIDs derivatives were synthesized by
esterification. These new compounds were evaluated for in vitro antitumor activity against tumor
cell lines A549, Hela, HepG2, HCT116 by MTT assay. To probe the required stabilities as prodrugs,
stability tests were studied in human plasma. To further evaluate the stability of Ketoprofen-CPT
in vivo, the female SD rats were used to determine the pharmacokinetics following a single oral dose.
Results:
In vitro results showed that Ketoprofen-CPT and Naproxen-CPT conjugates possessed nice
efficacy. In a molecular docking model, the two conjugates interacted with Topo I-DNA through
hydrogen bonds, <pi>-<pi> stacking and so on.In human plasma results showed that the prodrug
was converted to ketoprofen and another compound. The female SD rats were used to determine the
pharmacokinetics following a single oral dose, the half-life (t1/2) of Ketoprofen-CPT was
approximately 12 h which was much longer than that of CPT.
Conclusion:
Good activity was noted for some compounds will be helpful for the design of dualaction
agents with most promising anti-cancer activity.
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Affiliation(s)
- Xingchen Cai
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Weiwei Huang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Yi Huang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Lihua Xia
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Miao Liu
- College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Mengke Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Wenchao Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Qingyong Li
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
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5
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Fukuda T, Nanjo Y, Fujimoto M, Yoshida K, Natsui Y, Ishibashi F, Okazaki F, To H, Iwao M. Lamellarin-inspired potent topoisomerase I inhibitors with the unprecedented benzo[g][1]benzopyrano[4,3-b]indol-6(13H)-one scaffold. Bioorg Med Chem 2019; 27:265-277. [DOI: 10.1016/j.bmc.2018.11.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 10/27/2022]
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6
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Basu A, Kumar GS. Nucleic acids binding strategies of small molecules: Lessons from alkaloids. Biochim Biophys Acta Gen Subj 2018; 1862:1995-2016. [DOI: 10.1016/j.bbagen.2018.06.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/11/2018] [Accepted: 06/11/2018] [Indexed: 01/14/2023]
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7
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Khadka DB, Park S, Jin Y, Han J, Kwon Y, Cho WJ. Design, synthesis, and biological evaluation of 1,3-diarylisoquinolines as novel topoisomerase I catalytic inhibitors. Eur J Med Chem 2017; 143:200-215. [PMID: 29174815 DOI: 10.1016/j.ejmech.2017.11.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 11/03/2017] [Accepted: 11/04/2017] [Indexed: 12/30/2022]
Abstract
With a goal of identifying potent topoisomerase (topo) inhibitor, the C4-aromatic ring of the anticancer agent, 3,4-diarylisoquinolone, was strategically shifted to design 1,3-diarylisoquinoline. Twenty-two target compounds were synthesized in three simple and efficient steps. The 1,3-diarylisoquinolines exhibited potent anti-proliferative effects on cancer cells but few compounds spared non-cancerous cells. Inhibition of topo I/IIα-mediated DNA relaxation by several derivatives was greater than that by camptothecin (CPT)/etoposide even at low concentration (20 μM). In addition, these compounds had little or no effect on polymerization of tubulin. A series of biological evaluations performed with the most potent derivative 4cc revealed that the compound is a non-intercalative topo I catalytic inhibitor interacting with free topo I. Collectively, the potent cytotoxic effect on cancer cells including the drug resistance ones, absence of lethal effect on normal cells, and different mechanism of action than topo I poisons suggest that the 1,3-diarylisoquinolines might be a promising class of anticancer agents worthy of further pursuit.
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Affiliation(s)
- Daulat Bikram Khadka
- College of Pharmacy, Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seojeong Park
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yifeng Jin
- College of Pharmacy, Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jinhe Han
- College of Pharmacy, Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Youngjoo Kwon
- College of Pharmacy, Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Republic of Korea.
| | - Won-Jea Cho
- College of Pharmacy, Research Institute of Drug Development, Chonnam National University, Gwangju 61186, Republic of Korea.
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8
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Mazza A, Beccalli EM, Contini A, Garcia-Argaez AN, Dalla Via L, Gelmi ML. A new scaffold of topoisomerase I inhibitors: Design, synthesis and biological evaluation. Eur J Med Chem 2016; 124:326-339. [DOI: 10.1016/j.ejmech.2016.08.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/09/2016] [Accepted: 08/21/2016] [Indexed: 01/24/2023]
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9
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Wu D, Shi W, Zhao J, Wei Z, Chen Z, Zhao D, Lan S, Tai J, Zhong B, Yu H. Assessment of the chemotherapeutic potential of a new camptothecin derivative, ZBH-1205. Arch Biochem Biophys 2016; 604:74-85. [PMID: 27302903 DOI: 10.1016/j.abb.2016.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 05/26/2016] [Accepted: 06/09/2016] [Indexed: 10/21/2022]
Abstract
CPT-11 (irinotecan) is a derivative of camptothecin which is a natural product derived from the Chinese tree Camptotheca acuminta and widely used in antitumor therapy. Here, the in vitro anti-tumor activity and associated mechanisms of a novel derivative of camptothecin, ZBH-1205, were investigated in a panel of 9 human tumor cell lines, as well as in HEK 293 and SK-OV-3/DPP, a multi-drug resistant (MDR) cell line, and compared to CPT-11 and 7-ethyl-10-hydroxy-camptothecin (SN38). Comparisons between the different compounds were made on the basis of IC50 values as determined by the MTT assay, and flow cytometry was used to evaluate cell cycle progression, apoptosis, and the levels of pro- and active caspase-3 among different treatment groups. Interaction between the molecules and topoisomerase-1 (Topo-1)-DNA complexes was detected by a DNA relaxation assay. Our results demonstrated that IC50 values for ZBH-1205 ranged from 0.0009 μmol/L to 2.5671 μmol/L, which were consistently lower than IC50 values of CPT-11 or SN38 in the panel of cell lines, including SK-OV-3/DPP. Furthermore, ZBH-1205 was more effective than CPT-11 or SN38 at stabilizing Topo-1-DNA complexes and inducing tumor cell apoptosis. Therefore, ZBH-1205 is a promising chemotherapeutic agent to be further assessed in large-scale clinical trials.
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Affiliation(s)
- Di Wu
- Tumor Center of Jilin University No.1 Hospital, Changchun 130021, China
| | - Weiguo Shi
- Institute of Pharmacology and Toxicology Academy of Military Medical Sciences, Beijing 100850, China
| | - Jing Zhao
- Key Lab for Zoonosis Research, Ministry of Education, Institute of Zoonosis, Jilin University, Changchun 130062, China
| | - Zhengren Wei
- Department of Pharmacology, Bethune Medical College, Jilin University, Changchun 130021, China
| | - Zhijia Chen
- Department of Pharmacology, Bethune Medical College, Jilin University, Changchun 130021, China
| | - Dawei Zhao
- Jilin Province Tumor Hospital, Changchun 130021, China
| | - Shijie Lan
- Tumor Center of Jilin University No.1 Hospital, Changchun 130021, China
| | - Jiandong Tai
- Tumor Center of Jilin University No.1 Hospital, Changchun 130021, China.
| | - Bohua Zhong
- Institute of Pharmacology and Toxicology Academy of Military Medical Sciences, Beijing 100850, China.
| | - Hong Yu
- Cell Biology Laboratory, Jilin Province Tumor Institute, Changchun 130021, China.
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10
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Synthesis and biological activity of ferrocenyl indeno[1,2-c]isoquinolines as topoisomerase II inhibitors. Bioorg Med Chem 2016; 24:651-60. [DOI: 10.1016/j.bmc.2015.12.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/15/2015] [Accepted: 12/17/2015] [Indexed: 12/18/2022]
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11
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Parrino B, Carbone A, Muscarella M, Spanò V, Montalbano A, Barraja P, Salvador A, Vedaldi D, Cirrincione G, Diana P. 11H-Pyrido[3′,2′:4,5]pyrrolo[3,2-c]cinnoline and Pyrido[3′,2′:4,5]pyrrolo[1,2-c][1,2,3]benzotriazine: Two New Ring Systems with Antitumor Activity. J Med Chem 2014; 57:9495-511. [DOI: 10.1021/jm501244f] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Barbara Parrino
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Anna Carbone
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Marina Muscarella
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Virginia Spanò
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Alessandra Montalbano
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Paola Barraja
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Alessia Salvador
- Dipartimento
di Scienze del Farmaco, Università di Padova, Via F. Marzolo
5, 35121 Padova, Italy
| | - Daniela Vedaldi
- Dipartimento
di Scienze del Farmaco, Università di Padova, Via F. Marzolo
5, 35121 Padova, Italy
| | - Girolamo Cirrincione
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Patrizia Diana
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
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12
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Miambo RF, Laronze-Cochard M, Lawson AM, Guillot R, Baldeyrou B, Lansiaux A, Supuran CT, Sapi J. Synthesis of new biologically active isothiazolo[4,5-b]carbazole-type tetracyclic derivatives via an indole-2,3-quinodimethane approach. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Dezhenkova LG, Tsvetkov VB, Shtil AA. Topoisomerase I and II inhibitors: chemical structure, mechanisms of action and role in cancer chemotherapy. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n01abeh004363] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Quintana-Espinoza P, García-Luis J, Amesty A, Martín-Rodríguez P, Lorenzo-Castrillejo I, Ravelo AG, Fernández-Pérez L, Machín F, Estévez-Braun A. Synthesis and study of antiproliferative, antitopoisomerase II, DNA-intercalating and DNA-damaging activities of arylnaphthalimides. Bioorg Med Chem 2013; 21:6484-95. [PMID: 24054489 DOI: 10.1016/j.bmc.2013.08.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 08/20/2013] [Accepted: 08/21/2013] [Indexed: 11/28/2022]
Abstract
A series of arylnaphthalimides were designed and synthesized to overcome the dose-limiting cytotoxicity of N-acetylated metabolites arising from amonafide, the prototypical antitumour naphthalimide whose biomedical properties have been related to its ability to intercalate the DNA and poison the enzyme Topoisomerase II. Thus, these arylnaphthalimides were first evaluated for their antiproliferative activity against two tumour cell lines and for their antitopoisomerase II in vitro activities, together with their ability to intercalate the DNA in vitro and also through docking modelization. Then, the well-known DNA damage response in Saccharomyces cerevisiae was employed to critically evaluate whether these novel compounds can damage the DNA in vivo. By performing all these assays we conclude that the 5-arylsubstituted naphthalimides not only keep but also improve amonafide's biological activities.
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Affiliation(s)
- Patricia Quintana-Espinoza
- Instituto Universitario de Bio-Orgánica 'Antonio González', Centro de Investigaciones Biomédicas de Canarias (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Fco. Sánchez 2, 38206 La Laguna, Tenerife, Spain; Instituto Canario de Investigación del Cáncer (ICIC), Spain(†)
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15
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Khadka DB, Cho WJ. Topoisomerase inhibitors as anticancer agents: a patent update. Expert Opin Ther Pat 2013; 23:1033-56. [DOI: 10.1517/13543776.2013.790958] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Total synthesis of a novel non-lactone camptothecin analog through microwave-assisted [3,3]-sigmatropic rearrangement. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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17
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Christodoulou MS, Zunino F, Zuco V, Borrelli S, Comi D, Fontana G, Martinelli M, Lorens JB, Evensen L, Sironi M, Pieraccini S, Dalla Via L, Gia OM, Passarella D. Camptothecin-7-yl-methanthiole: Semisynthesis and Biological Evaluation. ChemMedChem 2012; 7:2134-43. [DOI: 10.1002/cmdc.201200322] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 09/13/2012] [Indexed: 11/12/2022]
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18
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Neves AP, Pereira MXG, Peterson EJ, Kipping R, Vargas MD, Silva FP, Carneiro JWM, Farrell NP. Exploring the DNA binding/cleavage, cellular accumulation and topoisomerase inhibition of 2-hydroxy-3-(aminomethyl)-1,4-naphthoquinone Mannich bases and their platinum(II) complexes. J Inorg Biochem 2012. [PMID: 23186648 DOI: 10.1016/j.jinorgbio.2012.10.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Several chlorido and amino Pt(2+) complexes of 2-hydroxy-3-(aminomethyl)-1,4-naphthoquinone Mannich bases HL exhibiting moderate to high cytotoxicity against cancer cell lines were studied in order to investigate their modes of DNA binding, in vitro DNA strand breaks, mechanism of topoisomerase (Topo I) inhibition and cellular accumulation. DNA model base studies have shown that complex 1a [Pt(HL1)Cl(2)] was capable of binding covalently to 9-ethylguanine (9-EtG) and 5'-GMP. (1)H NMR and mass spectrometry studies have shown that both chlorides were substituted by 9-EtG ligands, whereas 5'-GMP was able to replace only one chlorido ligand, due to steric hindrance. The chlorido Pt(2+) complexes [Pt(HL)Cl(2)] highly accumulate in prostate (PC-3) and melanoma (MDA-MB-435) cell lines, being able to induce DNA strand breaks in vitro and inhibit Topo I by a catalytic mode. On the other hand, the free 2-hydroxy-3-(aminomethyl)-1,4-naphthoquinones HL and the amino Pt(2+) complexes [Pt(L(-))(NH(3))(2)]NO(3) neither cause DNA strand breakage nor exhibit strong DNA interaction, nevertheless the latter were also found to be catalytic inhibitors of Topo I at 100μM. Thus, coordination of the Mannich bases HL to the "PtCl(2)" fragment substantially affects the chemical and biophysical properties of the pro-ligands, leading to an improvement of their DNA binding properties and generating compounds that cleave DNA and catalytically inhibit Topo I. Finally, the high cytotoxicity exhibited by the free (uncomplexed) 2-hydroxy-3-(aminomethyl)-1,4-naphthoquinones might be associated with their decomposition in solution, which is not observed for the Pt(2+) complexes.
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Affiliation(s)
- Amanda P Neves
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284, USA
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Abstract
Topoisomerases are nuclear enzymes that play essential roles in DNA replication, transcription, chromosome segregation, and recombination. All cells have two major forms of topoisomerases: type I enzymes, which make single-stranded cuts in DNA, and type II enzymes, which cut and pass double-stranded DNA. DNA topoisomerases are important targets of approved and experimental anti-cancer agents. The protocols described in this unit are for assays used to assess new chemical entities for their ability to inhibit both forms of DNA topoisomerase. Included are an in vitro assay for topoisomerase I activity based on relaxation of supercoiled DNA, and an assay for topoisomerase II based on the decatenation of double-stranded DNA. The preparation of mammalian cell extracts for assaying topoisomerase activity is described, along with a protocol for an ICE assay to examine topoisomerase covalent complexes in vivo, and an assay for measuring DNA cleavage in vitro.
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Affiliation(s)
- John L Nitiss
- Molecular Pharmacology Department, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
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Matuszak N, Hamtiaux L, Baldeyroux B, Muccioli GG, Poupaert JH, Lansiaux A, Lambert DM. Dual inhibition of MAGL and type II topoisomerase by N-phenylmaleimides as a potential strategy to reduce neuroblastoma cell growth. Eur J Pharm Sci 2011; 45:263-71. [PMID: 22127371 DOI: 10.1016/j.ejps.2011.11.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 11/02/2011] [Accepted: 11/11/2011] [Indexed: 01/08/2023]
Abstract
The endocannabinoid system is implicated in numerous physiopathological processes while more and more pieces of evidence wave the link between this complex machinery and cancer related phenomenon. In these lines, we confirmed the effects of 2-arachidonoylglycerol (2-AG), the main endocannabinoid, on neuroblastoma cells proliferation in vitro, and proved that some N-phenylmaleimide compounds that were previously shown as MAGL inhibitors can also inhibit type 2 topoisomerase. We also shed light on their antiproliferative effects on a neuroblastoma cell line. In order to establish a link between MAGL inhibition, topoisomerase inhibition and the effects on N1E-115 cells, we tested combinations of maleimides or known endocannabinoid metabolism inhibitors and 2-AG, the major MAGL substrate, on N1E-115 cells. However, none of the inhibitors tested, except the carbamate CAY10499, managed to increase 2-AG's effects. Even the MAGL reference inhibitor JZL184 failed to induce a stronger inhibition of proliferation.
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Affiliation(s)
- Nicolas Matuszak
- Université catholique de Louvain, Louvain Drug Research Institute (LDRI), Medicinal Chemistry Research Group (CMFA), 73 avenue E. Mounier, bte B1.73.10, 1200 Bruxelles, Belgium
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Genès C, Lenglet G, Depauw S, Nhili R, Prado S, David-Cordonnier MH, Michel S, Tillequin F, Porée FH. Synthesis and biological evaluation of N-substituted benzo[c]phenanthrolines and benzo[c]phenanthrolinones as antiproliferative agents. Eur J Med Chem 2011; 46:2117-31. [DOI: 10.1016/j.ejmech.2011.02.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 02/21/2011] [Accepted: 02/26/2011] [Indexed: 12/31/2022]
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Kennedy S, Dicesare JC, Sheaff RJ. Topoisomerase I inactivation by a novel thiol reactive naphthoquinone. Biochem Biophys Res Commun 2011; 410:152-8. [PMID: 21651895 DOI: 10.1016/j.bbrc.2011.05.131] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Accepted: 05/21/2011] [Indexed: 01/17/2023]
Abstract
The naphthoquinone adduct 12,13-dihydro-N-methyl-6,11,13-trioxo-5H-benzo[4,5]cyclohepta[1,2-b]naphthalen-5,12-imine (hereafter called TU100) contains structural features of both the anthracycline and isoquinone chemotherapeutics. An initial characterization showed TU100 is cytotoxic to mammalian cells and can inhibit topoisomerase I and II. Analysis using topoisomerase I now reveals TU100 is a slow acting inhibitor targeting the enzyme in the absence of DNA. Diluting pre-incubated TU100 and topoisomerase I failed to alleviate inhibition, suggesting the enzyme is being covalently modified. Critical cysteine thiols were identified as the possible target based on the ability of reducing agents to reverse TU100 inhibition. Consistent with this idea, TU100 protected topoisomerase I from inactivation by the sulfhydryl modifying agent N-ethylmaleimide (NEM). Unlike agents nonspecifically reacting with thiols, however, TU100 is specific for topoisomerase because it failed to inhibit a cysteine dependent protease. These results indicate TU100 is a novel naphthoquinone that inactivates free topoisomerase I via alkylation of cysteine residues.
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Affiliation(s)
- Steven Kennedy
- Department of Chemistry and Biochemistry, The University of Tulsa, Tulsa, OK 74104, United States
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Ahn G, Schifano-Faux N, Goossens JF, Baldeyrou B, Couture A, Grandclaudon P, Lansiaux A, Ryckebusch A. Synthesis, cytotoxicity and topoisomerase inhibition properties of multifarious aminoalkylated indeno[1,2-c]isoquinolin-5,11-diones. Bioorg Med Chem Lett 2011; 21:2259-63. [DOI: 10.1016/j.bmcl.2011.02.106] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 02/24/2011] [Accepted: 02/25/2011] [Indexed: 10/18/2022]
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Hajbi Y, Neagoie C, Biannic B, Chilloux A, Vedrenne E, Baldeyrou B, Bailly C, Mérour JY, Rosca S, Routier S, Lansiaux A. Synthesis and biological activities of new furo[3,4-b]carbazoles: Potential topoisomerase II inhibitors. Eur J Med Chem 2010; 45:5428-37. [DOI: 10.1016/j.ejmech.2010.09.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Revised: 08/27/2010] [Accepted: 09/01/2010] [Indexed: 10/19/2022]
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Cytotoxicity and Topo I targeting activity of substituted 10--nitrogenous heterocyclic aromatic group derivatives of SN-38. Eur J Med Chem 2010; 45:3200-6. [DOI: 10.1016/j.ejmech.2010.03.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Revised: 03/09/2010] [Accepted: 03/10/2010] [Indexed: 11/18/2022]
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Şerbetçi T, Genès C, Depauw S, Prado S, Porée FH, Hildebrand MP, David-Cordonnier MH, Michel S, Tillequin F. Synthesis and biological evaluation of dialkylaminoalkylamino benzo[c][1,7] and [1,8]phenanthrolines as antiproliferative agents. Eur J Med Chem 2010; 45:2547-58. [DOI: 10.1016/j.ejmech.2010.02.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Revised: 02/18/2010] [Accepted: 02/19/2010] [Indexed: 12/20/2022]
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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]
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Laronze-Cochard M, Cochard F, Daras E, Lansiaux A, Brassart B, Vanquelef E, Prost E, Nuzillard JM, Baldeyrou B, Goosens JF, Lozach O, Meijer L, Riou JF, Henon E, Sapi J. Synthesis and biological evaluation of new penta- and heptacyclic indolo- and quinolinocarbazole ring systems obtained via Pd0 catalysed reductive N-heteroannulation. Org Biomol Chem 2010; 8:4625-36. [DOI: 10.1039/c0ob00149j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Punchihewa C, Carver M, Yang D. DNA sequence selectivity of human topoisomerase I-mediated DNA cleavage induced by camptothecin. Protein Sci 2009; 18:1326-31. [PMID: 19472416 DOI: 10.1002/pro.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In probing the mechanism of inhibition of hypoxia inducible factor (HIF-1) by campothecins, we investigated the ability of human topoisomerase I to bind and cleave HIF-1 response element (HRE), which contains the known camptothecin-mediated topoisomerase I cleavage site 5'-TG. We observed that the selection of 5'-TG by human topoisomerase I and topotecan depends to a large extent on the specific flanking sequences, and that the presence of a G at the -2 position (where cleavage occurs between -1 and +1) prevents the HRE site from being a preferred site for such cleavage. Furthermore, the presence of -2 T/A can induce the cleavage at a less preferred TC or TA site. However, in the absence of a more preferred site, the HRE site is shown to be cleaved by human topoisomerase I in the presence of topotecan. Thus, it is implied that the -2 base has a significant influence on the selection of the camptothecin-mediated Topo I cleavage site, which can overcome the preference for +1G. While the cleavage site recognition has been known to be based on the concerted effect of several bases spanning the cleavage site, such a determining effect of an individual base has not been previously recognized. A possible base-specific interaction between DNA and topoisomerase I may be responsible for this sequence selectivity.
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Abstract
Ion-beam irradiation provides a promising treatment for some types of cancer. This promise is due mainly to the selective deposition of energy into a relatively small volume (the Bragg peak), thus reducing damage to healthy tissue. Recent observations that electrons with energies below the ionization potential of DNA can cause covalent damage to the bases and backbone have led to investigations into the ability of low-energy (<1 keV·Da−1) ion beams to damage double-stranded DNA. It has been clearly demonstrated that these low-energy ions induce a mixture of single- and double-strand breaks to dried DNA in vacuo. These effects depend upon the number of ions incident upon the DNA, the kinetic energy of the ions and on their charge state. This DNA damage may be important, as all radiotherapies will result in the production of low-energy secondary ions as radiation passes through tissues. Currently, their effects are neglected in treatment planning, and thus more work is required to quantify and understand DNA damage by low-energy ions.
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Ester K, Hranjec M, Piantanida I, Ćaleta I, Jarak I, Pavelić K, Kralj M, Karminski-Zamola G. Novel Derivatives of Pyridylbenzo[b]thiophene-2-carboxamides and Benzo[b]thieno[2,3-c]naphthyridin-2-ones: Minor Structural Variations Provoke Major Differences of Antitumor Action Mechanisms. J Med Chem 2009; 52:2482-92. [DOI: 10.1021/jm801573v] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Katja Ester
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
| | - Marijana Hranjec
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
| | - Ivo Piantanida
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
| | - Irena Ćaleta
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
| | - Ivana Jarak
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
| | - Krešimir Pavelić
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
| | - Marijeta Kralj
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
| | - Grace Karminski-Zamola
- Division of Molecular Medicine, “Ruđer Bošković” Institute, Bijenička Cesta 54, P.O. Box 180, HR-10000 Zagreb, Croatia, Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia, and Division of Organic Chemistry and Biochemistry, “Ruđer Bošković” Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
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de la Loza MCD, Wellinger RE. A novel approach for organelle-specific DNA damage targeting reveals different susceptibility of mitochondrial DNA to the anticancer drugs camptothecin and topotecan. Nucleic Acids Res 2009; 37:e26. [PMID: 19151088 PMCID: PMC2651790 DOI: 10.1093/nar/gkn1087] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
DNA is susceptible of being damaged by chemicals, UV light or gamma irradiation. Nuclear DNA damage invokes both a checkpoint and a repair response. By contrast, little is known about the cellular response to mitochondrial DNA damage. We designed an experimental system that allows organelle-specific DNA damage targeting in Saccharomyces cerevisiae. DNA damage is mediated by a toxic topoisomerase I allele which leads to the formation of persistent DNA single-strand breaks. We show that organelle-specific targeting of a toxic topoisomerase I to either the nucleus or mitochondria leads to nuclear DNA damage and cell death or to loss of mitochondrial DNA and formation of respiration-deficient ‘petite’ cells, respectively. In wild-type cells, toxic topoisomerase I–DNA intermediates are formed as a consequence of topoisomerase I interaction with camptothecin-based anticancer drugs. We reasoned that targeting of topoisomerase I to the mitochondria of top1Δ cells should lead to petite formation in the presence of camptothecin. Interestingly, camptothecin failed to generate petite; however, its derivative topotecan accumulates in mitochondria and induces petite formation. Our findings demonstrate that drug modifications can lead to organelle-specific DNA damage and thus opens new perspectives on the role of mitochondrial DNA-damage in cancer treatment.
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Affiliation(s)
- M C Díaz de la Loza
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Universidad de Sevilla - CSIC, Avda, Américo Vespucio s/n, 41092, Sevilla, Spain
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F14512, a Potent Antitumor Agent Targeting Topoisomerase II Vectored into Cancer Cells via the Polyamine Transport System. Cancer Res 2008; 68:9845-53. [DOI: 10.1158/0008-5472.can-08-2748] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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35
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Basili S, Basso G, Faccio A, Granzhan A, Ihmels H, Moro S, Viola G. Diazoniapolycyclic Ions Inhibit the Activity of Topoisomerase I and the Growth of Certain Tumor Cell Lines. ChemMedChem 2008; 3:1671-6. [DOI: 10.1002/cmdc.200800186] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Butterworth KT, Wyer JA, Brennan-Fournet M, Latimer CJ, Shah MB, Currell FJ, Hirst DG. Variation of strand break yield for plasmid DNA irradiated with high-Z metal nanoparticles. Radiat Res 2008; 170:381-7. [PMID: 18763863 DOI: 10.1667/rr1320.1] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2007] [Accepted: 04/29/2008] [Indexed: 04/11/2024]
Abstract
Using agarose gel electrophoresis, we measured the effectiveness of high-Z metal particles of different sizes on SSB and DSB yields for plasmid DNA irradiated with 160 kVp X rays. For plasmid samples prepared in Tris-EDTA buffer, gold nanoparticles were shown to increase G'(SSB) typically by a factor of greater than 2 while G'(DSB) increased by a factor of less than 2. Similar dose-modifying effects were also observed using gold microspheres. Addition of 10(-1) M DMSO typically decreased damage yields by a factor of less than 0.5. Plasmid samples prepared in PBS showed significantly different damage yields compared to those prepared in Tris-EDTA (P < 0.001) with G'(SSB) and G'(DSB) increasing by factors of 100 and 48, respectively. Furthermore, addition of gold nanoparticles to samples prepared in PBS decreased G'(SSB) and G'(DSB) by factors of 0.2 and 0.3, respectively. The results show plasmid damage yields to be highly dependent on differences in particle size between the micro- and nanometer scale, atomic number (Z) of the particle, and scavenging capacity of preparation buffers. This study provides further evidence using a plasmid DNA model system for the potential of high-Z metal nanoparticles as local dose-modifying agents.
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Affiliation(s)
- K T Butterworth
- Experimental Therapeutics Research Group, School of Pharmacy Queen's University Belfast Northern Ireland, BT9 7BL.
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Hranjec M, Piantanida I, Kralj M, Suman L, Pavelić K, Karminski-Zamola G. Novel amidino-substituted thienyl- and furylvinylbenzimidazole: derivatives and their photochemical conversion into corresponding diazacyclopenta[c]fluorenes. synthesis, interactions with DNA and RNA, and antitumor evaluation. 4. J Med Chem 2008; 51:4899-910. [PMID: 18652444 DOI: 10.1021/jm8000423] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthesis of novel nonfused amidino-substituted thienyl- and furylvinylbenzimidazole: derivatives and their photochemical cyclization into corresponding diazacyclopenta[ c]fluorenes is described. All studied compounds showed prominent growth inhibitory effect. The fused compounds showed stronger activity than nonfused ones, whereby imidazolyl-substituted compound 11 proved to be the most active one. Besides, it induced strong G2/M arrest of the cell cycle followed by drastic apoptosis, which is in accordance with the DNA intercalative binding mode determined by the spectroscopic studies. Nonfused derivatives induced strong S phase arrest of the cell cycle followed by apoptosis that together with DNA minor groove binding mode pointed to topoisomerase I inhibition. In addition, all nonfused compounds revealed pronounced selectivity toward tumor cells in comparison with nontumor cells. On the basis of the presented results, both nonfused and fused thiophene-containing imidazolyl derivatives should be considered as promising lead compounds for further investigation.
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Affiliation(s)
- Marijana Hranjec
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, P.O. Box 177, HR-10000 Zagreb, Croatia
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Ryckebusch A, Garcin D, Lansiaux A, Goossens JF, Baldeyrou B, Houssin R, Bailly C, Hénichart JP. Synthesis, Cytotoxicity, DNA Interaction, and Topoisomerase II Inhibition Properties of Novel Indeno[2,1-c]quinolin-7-one and Indeno[1,2-c]isoquinolin-5,11-dione Derivatives. J Med Chem 2008; 51:3617-29. [DOI: 10.1021/jm800017u] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Adina Ryckebusch
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
| | - Deborah Garcin
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
| | - Amélie Lansiaux
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
| | - Jean-François Goossens
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
| | - Brigitte Baldeyrou
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
| | - Raymond Houssin
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
| | - Christian Bailly
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
| | - Jean-Pierre Hénichart
- UMR 8009 “Chimie Organique et Macromoléculaire”, Laboratoire de Chimie Organique Physique, Bâtiment C3(2), Université des Sciences et Technologies de Lille, 59655 Villeneuve d’Ascq, France, Institut de Chimie Pharmaceutique Albert Lespagnol, EA 2692, Université de Lille 2, BP 83, 59006 Lille, France, INSERM U-837 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret (COL), IRCL, Place de Verdun, 59045 Lille, France, and Laboratoire de Chimie Analytique, EA 4034, Faculté des Sciences
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Hunniford CA, Timson DJ, Davies RJH, McCullough RW. Effects of low energy carbon ions on plasmid DNA. ACTA ACUST UNITED AC 2008. [DOI: 10.1088/1742-6596/101/1/012012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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40
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Synthesis and biological evaluation of bengacarboline derivatives. Bioorg Med Chem Lett 2008; 18:1212-6. [DOI: 10.1016/j.bmcl.2007.11.113] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Revised: 11/27/2007] [Accepted: 11/29/2007] [Indexed: 11/20/2022]
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41
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Bourderioux A, Bénéteau V, Mérour JY, Baldeyrou B, Ballot C, Lansiaux A, Bailly C, Le Guével R, Guillouzo C, Routier S. Synthesis and biological evaluation of novel oxophenylarcyriaflavins as potential anticancer agents. Org Biomol Chem 2008; 6:2108-17. [DOI: 10.1039/b801121d] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Hunniford CA, Timson DJ, Davies RJH, McCullough RW. Damage to plasmid DNA induced by low energy carbon ions. Phys Med Biol 2007; 52:3729-40. [PMID: 17664573 DOI: 10.1088/0031-9155/52/13/005] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The damage induced in supercoiled plasmid DNA molecules by 1-6 keV carbon ions has been investigated as a function of ion exposure, energy and charge state. The production of short linear fragments through multiple double strand breaks has been demonstrated and exponential exposure responses for each of the topoisomers have been found. The cross section for the loss of supercoiling was calculated to be (2.2 +/- 0.5) x 10(-14) cm(2) for 2 keV C(+) ions. For singly charged carbon ions, increased damage was observed with increasing ion energy. In the case of 2 keV doubly charged ions, the damage was greater than for singly charged ions of the same energy. These observations demonstrate that ion induced damage is a function of both the kinetic and potential energies of the ion.
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Affiliation(s)
- C A Hunniford
- Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.
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43
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Lansiaux A, Léonce S, Kraus-Berthier L, Bal-Mahieu C, Mazinghien R, Didier S, David-Cordonnier MH, Hautefaye P, Lavielle G, Bailly C, Hickman JA, Pierré A. Novel Stable Camptothecin Derivatives Replacing the E-Ring Lactone by a Ketone Function Are Potent Inhibitors of Topoisomerase I and Promising Antitumor Drugs. Mol Pharmacol 2007; 72:311-9. [PMID: 17494837 DOI: 10.1124/mol.107.034637] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The E-ring lactone is the Achilles' heel of camptothecin derivatives: although it is considered necessary for the inhibition of the enzyme topoisomerase I (topo1), the opening of the lactone into a carboxylate abolishes the generation of topo1-mediated DNA breaks. S38809 is a novel camptothecin analog with a stable 5-membered E-ring ketone; therefore, it lacks the lactone function. DNA relaxation and cleavage assays revealed that S38809 functions as a typical topo1 poison by stimulating DNA cleavage at T downward arrow G sites. The activity was strongly dependent on the stereochemistry of the C-7 carbon atom that bears the hydroxy group. S38809 proved to be a potent cytotoxic agent, with a mean IC50 of 5.4 nM versus 11.6 nM for topotecan and 3.3 nM for SN38 (the active metabolite of irinotecan) on a panel of 31 human tumor cell lines. The cytotoxicity of S38809 and its ability to stabilize cleavable complexes was considerably reduced in camptothecin-resistant cells that express a mutated topo1, confirming that topo1 is its primary target. Cell death induced by topo1 poisoning requires the conversion of DNA single-strand breaks into double-strand breaks that can be detected by the formation of phosphorylated histone H2AX. In HCT116 cells, topotecan, SN38, and S38809 induced histone H2AX phosphorylation in S phase of the cell cycle, with S38809 being as potent as SN38 and 5-fold more potent than topotecan. In vivo, S38809 showed a marked antitumor activity against HCT116 xenografts. These findings open a new route for improving the pharmacological properties of camptothecin derivatives.
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Affiliation(s)
- Amélie Lansiaux
- Institut National de la Santé et de la Recherche Médicale U837, Université de Lille 2, Facultéde Médecine, Institut de Médecine Prédictive et Recherche Thérapeutique, Lille, France.
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44
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Hunniford CA, Timson DJ, McCullough1 RJHDAW. Conformational changes to plasmid DNA induced by low energy carbon ions. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1742-6596/58/1/080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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David-Cordonnier MH, Hildebrand MP, Baldeyrou B, Lansiaux A, Keuser C, Benzschawel K, Lemster T, Pindur U. Design, synthesis and biological evaluation of new oligopyrrole carboxamides linked with tricyclic DNA-intercalators as potential DNA ligands or topoisomerase inhibitors. Eur J Med Chem 2007; 42:752-71. [PMID: 17433851 DOI: 10.1016/j.ejmech.2006.12.039] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2006] [Revised: 11/27/2006] [Accepted: 12/07/2006] [Indexed: 10/23/2022]
Abstract
In the context of the design and synthesis of minor groove binding and intercalating DNA ligands some new oligopyrrole carboxamides were synthesized. These hybrid molecules (combilexins) possess a variable and conformatively flexible spacer at the N-terminal end. As intercalating tricyclic systems acridone, acridine, anthraquinones and in a special case iminostilbene terminate the N-terminal end of the pyrrole chain. The cytotoxicity was examined by the NCI antitumor screening, furthermore, biophysical as well as biochemical studies were performed in order to get some information about the DNA binding properties and topoisomerase inhibition effect of this new series of molecules.
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Affiliation(s)
- Marie-Hélène David-Cordonnier
- INSERM U837-JPARC, Equipe N degrees 4, Institut de Recherches sur le Cancer de Lille, Place de Verdun, 59045 Lille Cedex, France
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46
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Li Q, Zu Y, Shi R, Yao L, Fu Y, Yang Z, Li L. Synthesis and antitumor activity of novel 10-substituted camptothecin analogues. Bioorg Med Chem 2006; 14:7175-82. [PMID: 16870453 DOI: 10.1016/j.bmc.2006.06.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2006] [Revised: 06/23/2006] [Accepted: 06/24/2006] [Indexed: 11/25/2022]
Abstract
In an attempt to improve the antitumor activity and decrease the cytotoxicity of camptothecin, 18 new 10-substituted camptothecin derivatives were prepared. The cytotoxicity in vitro on cancer cell lines and antitumor activity in vivo, and inhibitory properties of topoisomerase I of these derivatives were evaluated. Most of these derivatives possessed lower cytotoxicities than CPT, and the compounds 13, 21, 22, 23, and 24 showed similar topoisomerase I inhibitory activity to CPT. Analogues 13 exhibited the best antitumor activity in vivo among all derivatives we prepared.
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Affiliation(s)
- Qingyong Li
- Key Laboratory of Forest Plant Ecology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
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47
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Kluza J, Gallego MA, Loyens A, Beauvillain JC, Sousa-Faro JMF, Cuevas C, Marchetti P, Bailly C. Cancer cell mitochondria are direct proapoptotic targets for the marine antitumor drug lamellarin D. Cancer Res 2006; 66:3177-87. [PMID: 16540669 DOI: 10.1158/0008-5472.can-05-1929] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Lamellarin D is a marine alkaloid with a pronounced cytotoxicity against a large panel of cancer cell lines and is a potent inhibitor of topoisomerase I. However, lamellarin D maintains a marked cytotoxicity toward cell lines resistant to the reference topoisomerase I poison camptothecin. We therefore hypothesized that topoisomerase I is not the only cellular target for the drug. Using complementary cell-based assays, we provide evidence that lamellarin D acts on cancer cell mitochondria to induce apoptosis. Lamellarin D, unlike camptothecin, induces early disruption of the inner mitochondrial transmembrane potential (Deltapsi(m)) in the P388 leukemia cell line. The functional alterations are largely prevented by cyclosporin A, an inhibitor of the mitochondrial permeability transition (MPT), but not by the inhibitor of caspases, benzyloxycarbonyl-Val-Ala-Asp(Ome)-fluoromethylketone. Deltapsi(m) disruption is associated with mitochondrial swelling and cytochrome c leakage. Using a reliable real-time flow cytometric monitoring of Deltapsi(m) and swelling of mitochondria isolated from leukemia cells, we show that lamellarin D has a direct MPT-inducing effect. Furthermore, mitochondria are required in a cell-free system to mediate lamellarin D-induced nuclear apoptosis. The direct mitochondrial effect of lamellarin D accounts for the sensitivity of topoisomerase I-mutated P388CPT5 cells resistant to camptothecin. Interestingly, a tumor-active analogue of lamellarin D, designated PM031379, also exerts a direct proapoptotic action on mitochondria, with a more pronounced activity toward mitochondria of tumor cell lines compared with nontumor cell lines. Altogether, this work reinforces the pharmacologic interest of the lamellarins and defines lamellarin D as a lead in the search for treatments against chemoresistant cancer cells.
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Affiliation(s)
- Jérôme Kluza
- Institut National de la Santé et de la Reserche Médicale U-524, Institut de Recherche sur le Cancer de Lille, France
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48
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Simone M, Erba E, Damia G, Vikhanskaya F, Di Francesco AM, Riccardi R, Bailly C, Cuevas C, Fernandez Sousa-Faro JM, D'Incalci M. Variolin B and its derivate deoxy-variolin B: New marine natural compounds with cyclin-dependent kinase inhibitor activity. Eur J Cancer 2005; 41:2366-77. [PMID: 16181779 DOI: 10.1016/j.ejca.2005.05.015] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2005] [Accepted: 05/10/2005] [Indexed: 01/10/2023]
Abstract
Variolin B (VAR-B) is a natural product isolated from the sponge Kirkpatrickia variolosa, found in Antarctica. VAR-B has been shown previously to possess potent pro-apoptotic activity. This study was undertaken to investigate the mechanism of action of chemically synthesised VAR-B and its analogue deoxy-variolin B (dVAR-B). In different human cancer cell lines both compounds inhibited colony formation, caused cell cycle perturbations and induced apoptosis at concentrations ranging from 0.1 to 2 microM. LoVo/Dx cells over-expressing Pgp were equally sensitive as the parental cell line to VAR-B and dVAR-B, indicating that variolins are not substrates of Pgp. Although variolins induced an increase in the levels of p53 with an increase in p21, their cytotoxicities did not appear to be dependent on p53 status as their potency was comparable in cells with wild-type p53, or in sub-lines with inactivated p53. Both VAR-B and dVAR-B prevent the cells from entering S phase, blocking cells in G1 and cause an accumulation of cells in G2. The apoptosis induced by VAR-B and dVAR-B occurs very rapidly in some cell lines (e.g., Jurkat leukaemia cells) and is already evident 4h after the beginning of treatment. Although intercalation of dVAR-B in DNA has been demonstrated, neither VAR-B nor dVAR-B produce detectable breaks in DNA. These results are consistent with the in vitro biochemical assays that also demonstrated that dVAR-B is not topoisomerase I or II poison. Instead, each of these variolins appears to inhibit cyclin-dependent kinases (CDKs) in the muM range. CDK1-cyclin B, CDK2-cyclin A and CDK2/cylin E complexes were inhibited in a range of concentrations lower than those required to inhibit the activity of CDK4/cyclin D or CDK7/cyclin H complexes. In conclusion, these variolins are a new class of CDK inhibitors that activate apoptosis in a p53-independent fashion and thus they may be effective against tumours with p53 mutations or deletions.
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Affiliation(s)
- Matteo Simone
- Department of Oncology, Mario Negri Institute for Pharmacological Research, Via Eritrea 62, Milan, and Division of Pediatric Oncology, Catholic University A. Gemelli, Rome, Italy
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49
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Laronze M, Boisbrun M, Léonce S, Pfeiffer B, Renard P, Lozach O, Meijer L, Lansiaux A, Bailly C, Sapi J, Laronze JY. Synthesis and anticancer activity of new pyrrolocarbazoles and pyrrolo-β-carbolines. Bioorg Med Chem 2005; 13:2263-83. [PMID: 15830466 DOI: 10.1016/j.bmc.2004.12.045] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
'Bended' 1, 3 or 'linear' 2 pyrrolidino-fused (aza)carbazoles were prepared and screened towards a few cancer-related targets. Whereas 'bended' derivatives 1 and 3 proved to be weakly toxic, several members of the 'linear' family strongly interact with DNA, especially derivative 28a.
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Affiliation(s)
- M Laronze
- CNRS FRE 2715 'Isolement, Structure, Transformations et Synthèse de Produits Naturels', IFR 53, Faculté de Pharmacie, 51 Rue Cognacq Jay, 51096 Reims cedex, France.
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50
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Tazi J, Bakkour N, Soret J, Zekri L, Hazra B, Laine W, Baldeyrou B, Lansiaux A, Bailly C. Selective Inhibition of Topoisomerase I and Various Steps of Spliceosome Assembly by Diospyrin Derivatives. Mol Pharmacol 2004; 67:1186-94. [PMID: 15625279 DOI: 10.1124/mol.104.007633] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Pre-mRNA splicing is an essential step of the expression of most metazoan protein-coding genes, which is often regulated in a cell type-specific or developmental manner. We have demonstrated previously that human DNA topoisomerase I, an extensively studied target for anticancer drugs, also has an intrinsic protein kinase activity that specifically phosphorylates proteins involved in splice site selection. Therefore, DNA topoisomerase I was recently shown to play a critical role in alternative splicing. Here, we have exploited these novel properties of DNA topoisomerase I to develop entirely novel diospyrin derivatives targeting its protein kinase activity and thereby modulating pre-mRNA splicing. Although some derivatives indeed inhibit kinase activity of topoisomerase I, they did not block reactions of topoisomerase I on DNA. However, these drugs interfere with camptothecin-dependent topoisomerase I-mediated DNA cleavage, implying that diospyrin derivatives mediate a conformational change of topoisomerase I. It is note-worthy that in vitro splicing reactions revealed that diospyrin derivatives alter various steps of splicing. Some diospyrin derivatives inhibit either the first or the second catalytic step of splicing but not spliceosome assembly, whereas diospyrin itself prevents the formation of full spliceosome. Our data revealed for the first time that diospyrin derivatives are able to stall the dynamic assembly of the spliceosome and open the exciting possibility of using these derivatives to correct aberrant splicing in human genetic diseases.
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Affiliation(s)
- Jamal Tazi
- IGM-Centre National de la Recherche Scientifique-UMII, Unité Mixte de Recherche 5535, l'Institut Fédératif de Recherches 122, Montpellier, France
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