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Bruna-Haupt EF, Perretti MD, Garro HA, Carrillo R, Machín F, Lorenzo-Castrillejo I, Gutiérrez L, Vega-Hissi EG, Mamberto M, Menacho-Marquez M, Fernández CO, García C, Pungitore CR. Synthesis of Structurally Related Coumarin Derivatives as Antiproliferative Agents. ACS OMEGA 2023; 8:26479-26496. [PMID: 37521653 PMCID: PMC10373209 DOI: 10.1021/acsomega.3c03181] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 06/29/2023] [Indexed: 08/01/2023]
Abstract
A library of structurally related coumarins was generated through synthesis reactions and chemical modification reactions to obtain derivatives with antiproliferative activity both in vivo and in vitro. Out of a total of 35 structurally related coumarin derivatives, seven of them showed inhibitory activity in in vitro tests against Taq DNA polymerase with IC50 values lower than 250 μM. The derivatives 4-(chloromethyl)-5,7-dihydroxy-2H-chromen-2-one (2d) and 4-((acetylthio)methyl)-2-oxo-2H-chromen-7-yl acetate (3c) showed the most promising anti-polymerase activity with IC50 values of 20.7 ± 2.10 and 48.25 ± 1.20 μM, respectively. Assays with tumor cell lines (HEK 293 and HCT-116) were carried out, and the derivative 4-(chloromethyl)-7,8-dihydroxy-2H-chromen-2-one (2c) was the most promising, with an IC50 value of 8.47 μM and a selectivity index of 1.87. In addition, the derivatives were evaluated against Saccharomyces cerevisiae strains that report about common modes of actions, including DNA damage, that are expected for agents that cause replicative stress. The coumarin derivatives 7-(2-(oxiran-2-yl)ethoxy)-2H-chromen-2-one (5b) and 7-(3-(oxiran-2-yl)propoxy)-2H-chromen-2-one (5c) caused DNA damage in S. cerevisiae. The O-alkenylepoxy group stands out as that with the most important functionality within this family of 35 derivatives, presenting a very good profile as an antiproliferative scaffold. Finally, the in vitro antiretroviral capacity was tested through RT-PCR assays. Derivative 5c showed inhibitory activity below 150 μM with an IC50 value of 134.22 ± 2.37 μM, highlighting the O-butylepoxy group as the functionalization responsible for the activity.
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Affiliation(s)
- Ezequiel F. Bruna-Haupt
- Department
of Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, San Luis 5700, Argentina
- Chemical
Technology Research Institute-National Council for Scientific and
Technical Research (INTEQUI-CONICET), San Luis 5700, Argentina
| | - Marcelle D. Perretti
- Institute
of Bio-Organics Antonio González, Department of Organic Chemistry, University of La Laguna, Institute of Natural Products
and Agrobiology, IPNA-CSIC, La
Laguna 38206, Spain
| | - Hugo A. Garro
- Department
of Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, San Luis 5700, Argentina
- Chemical
Technology Research Institute-National Council for Scientific and
Technical Research (INTEQUI-CONICET), San Luis 5700, Argentina
- Max
Planck Laboratory for Structural Biology, Chemistry and Molecular
Biophysics of Rosario (MPLbioR, UNR-MPIbpC), and Instituto de Investigaciones
para el Descubrimiento de Fármacos de Rosario (IIDEFAR, UNR-CONICET), Rosario 2002, Argentina
- National
University of Rosario, Rosario, Santa Fe 3100, Argentina
| | - Romen Carrillo
- Institute
of Bio-Organics Antonio González, Department of Organic Chemistry, University of La Laguna, Institute of Natural Products
and Agrobiology, IPNA-CSIC, La
Laguna 38206, Spain
| | - Félix Machín
- Research
Unit, Nuestra Señora de Candelaria University Hospital, Santa
Cruz de Tenerife 38010, Spain, Institute of Biomedical Technologies, University of La Laguna, Tenerife 38200, Spain
- Faculty
of Health Sciences, Fernando Pessoa Canarias
University, Las Palmas
de Gran Canaria 35450, Spain
| | - Isabel Lorenzo-Castrillejo
- Research
Unit, Nuestra Señora de Candelaria University Hospital, Santa
Cruz de Tenerife 38010, Spain, Institute of Biomedical Technologies, University of La Laguna, Tenerife 38200, Spain
| | - Lucas Gutiérrez
- Department
of Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, San Luis 5700, Argentina
| | - Esteban G. Vega-Hissi
- Department
of Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, San Luis 5700, Argentina
| | - Macarena Mamberto
- National
University of Rosario, Rosario, Santa Fe 3100, Argentina
- Institute
of Clinical and Experimental Immunology of Rosario (IDICER; CONICET-UNR),
Center for Research and Production of Biological Reagents (CIPReB;
FCM-UNR), Faculty of Medical Sciences, Rosario, Santa Fe 3100, Argentina
| | - Mauricio Menacho-Marquez
- National
University of Rosario, Rosario, Santa Fe 3100, Argentina
- Institute
of Clinical and Experimental Immunology of Rosario (IDICER; CONICET-UNR),
Center for Research and Production of Biological Reagents (CIPReB;
FCM-UNR), Faculty of Medical Sciences, Rosario, Santa Fe 3100, Argentina
| | - Claudio O. Fernández
- Max
Planck Laboratory for Structural Biology, Chemistry and Molecular
Biophysics of Rosario (MPLbioR, UNR-MPIbpC), and Instituto de Investigaciones
para el Descubrimiento de Fármacos de Rosario (IIDEFAR, UNR-CONICET), Rosario 2002, Argentina
- National
University of Rosario, Rosario, Santa Fe 3100, Argentina
| | - Celina García
- Institute
of Bio-Organics Antonio González, Department of Organic Chemistry, University of La Laguna, Institute of Natural Products
and Agrobiology, IPNA-CSIC, La
Laguna 38206, Spain
| | - Carlos R. Pungitore
- Department
of Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, San Luis 5700, Argentina
- Chemical
Technology Research Institute-National Council for Scientific and
Technical Research (INTEQUI-CONICET), San Luis 5700, Argentina
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de Andrade JKF, da Silva Góes AJ, Barbosa VX, de Lima Silva MS, Matos Donato MA, Peixoto CA, Militão GCG, da Silva TG. Anticancer activity of β-Lapachone derivatives on human leukemic cell lines. Chem Biol Interact 2022; 365:110057. [PMID: 35934135 DOI: 10.1016/j.cbi.2022.110057] [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: 04/26/2022] [Revised: 06/18/2022] [Accepted: 07/13/2022] [Indexed: 11/25/2022]
Abstract
β-lapachone is a 1,2-naphthoquinone of great therapeutic interest that induces cell death by autophagy and apoptosis in tumor cells due to oxidative stress increasing. However, its high toxicity in healthy tissues limits its clinical use, which stimulates the planning and synthesis of more selective analogs. The aim of this study was to investigate the cytotoxic activity of three thiosemicarbazones derived from β-lapachone (BV2, BV3 and BV5) in leukemia cells. Cytotoxicity tests were performed on tumor cells (HL-60, K562, K562-Lucena and MOLT-4) and normal peripheral blood mononuclear cells (PBMCs). Subsequently, the mode of action of compounds was accessed by optical microscopy, transmission electron microscopy or fluorescence microscopy. Flow cytometry analysis was performed to investigate apoptosis induction, cell cycle, DNA fragmentation and mitochondrial depolarization. All derivatives inhibited tumor cell growth after 72 h (IC50 < 10 μM to all cell lines, including the resistant K562-Lucena) with less toxic effects in PBMC cells, being BV3 the most selective compound with selective index (SI) of 275 for HL-60; SI of 40 to K562; SI of 10 for MOLT-4 and SI of 50 to K562-Lucena compared to β-lapachone with SI of 18 to HL-60, SI of 3.7 to K562; SI of 2.4 to MOLT-4 and SI of 0.9 to K562-Lucena. In addition, the K562 or MOLT-4 cells treated with BV3 showed characteristics of both apoptosis and autophagy cell death, mainly by autophagy. These results demonstrate the potent cytotoxic effect of thiosemicarbazones derived from β-lapachone as promising anticancer drugs candidates, encouraging the continuity of in vivo tests.
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Affiliation(s)
| | | | - Vanessa Xavier Barbosa
- Department of Antibiotics, Federal University of Pernambuco (UFPE), Recife, Pernambuco, 50670-901, Brazil
| | | | - Mariana Aragão Matos Donato
- Ultrastructure Laboratory, Aggeu Magalhães Research Center of the Oswaldo Cruz Foundation, Recife, Pernambuco, 50670-901, Brazil.
| | - Christina Alves Peixoto
- Ultrastructure Laboratory, Aggeu Magalhães Research Center of the Oswaldo Cruz Foundation, Recife, Pernambuco, 50670-901, Brazil.
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de Moraes DC, Cardoso KM, Domingos LTS, do Carmo Freire Ribeiro Pinto M, Monteiro RQ, Ferreira-Pereira A. β-Lapachone enhances the antifungal activity of fluconazole against a Pdr5p-mediated resistant Saccharomyces cerevisiae strain. Braz J Microbiol 2020; 51:1051-1060. [PMID: 32157667 PMCID: PMC7455662 DOI: 10.1007/s42770-020-00254-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 02/28/2020] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES The aim of this study was to evaluate the ability of lapachones in disrupting the fungal multidrug resistance (MDR) phenotype, using a model of study which an azole-resistant Saccharomyces cerevisiae mutant strain that overexpresses the ATP-binding cassette (ABC) transporter Pdr5p. METHODS The evaluation of the antifungal activity of lapachones and their possible synergism with fluconazole against the mutant S. cerevisiae strain was performed through broth microdilution and spot assays. Reactive oxygen species (ROS) and efflux pump activity were assessed by fluorometry. ATPase activity was evaluated by the Fiske and Subbarow method. The effect of β-lapachone on PDR5 mRNA expression was assessed by RT-PCR. The release of hemoglobin was measured to evaluate the hemolytic activity of β-lapachone. RESULTS α-nor-Lapachone and β-lapachone inhibited S. cerevisiae growth at 100 μg/ml. Only β-lapachone enhanced the antifungal activity of fluconazole, and this combined action was inhibited by ascorbic acid. β-Lapachone induced the production of ROS, inhibited Pdr5p-mediated efflux, and impaired Pdr5p ATPase activity. Also, β-lapachone neither affected the expression of PDR5 nor exerted hemolytic activity. CONCLUSIONS Data obtained indicate that β-lapachone is able to inhibit the S. cerevisiae efflux pump Pdr5p. Since this transporter is homologous to fungal ABC transporters, further studies employing clinical isolates that overexpress these proteins will be conducted to evaluate the effect of β-lapachone on pathogenic fungi.
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Affiliation(s)
- Daniel Clemente de Moraes
- Laboratório de Bioquímica Microbiana, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-590, Brazil
| | - Karina Martins Cardoso
- Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-590, Brazil
| | - Levy Tenório Sousa Domingos
- Laboratório de Bioquímica Microbiana, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-590, Brazil
| | - Maria do Carmo Freire Ribeiro Pinto
- Laboratório de Química Heterocíclica, Instituto de Pesquisas de Produtos Naturais, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-590, Brazil
| | - Robson Q Monteiro
- Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-590, Brazil
| | - Antônio Ferreira-Pereira
- Laboratório de Bioquímica Microbiana, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-590, Brazil.
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Chen R, Zhu Q, Fang Z, Huang Z, Sun J, Peng M, Shi P. Aluminum induces oxidative damage in Saccharomyces cerevisiae. Can J Microbiol 2020; 66:713-722. [PMID: 32730711 DOI: 10.1139/cjm-2020-0084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The mechanism of aluminum toxicity was studied in the model cells of Saccharomyces cerevisiae. Cell growth of yeast was inhibited by aluminum. The spot assay showed that the mechanism of aluminum detoxification in yeast cells was different from that of heavy metal cadmium. After treatment with aluminum, intracellular levels of reactive oxygen species, protein carbonyl, and thiobarbituric acid reactive substances were dramatically increased. Meanwhile, the percentage of aluminum-treated cells permeable to propidium iodide was augmented significantly. These data demonstrated that aluminum toxicity was attributed to oxidative stress in yeast, and it induced oxidative damage by causing lipid peroxidation, injuring cell membrane integrity. Moreover, aluminum triggered the antioxidant defense system in the cells. Glutathione levels were found to be decreased, while activities of superoxide dismutase and catalase were increased after treatment with aluminum. Additionally, an oxidative-stress-related mutation sensitivity assay showed that aluminum-induced yeast oxidative stress was closely related to glutathione. These data demonstrated that the oxidative damage caused by aluminum was different from that of hydrogen peroxide, in yeast. Aluminum could cause DNA damage, and aluminum toxicity was associated with sulfhydryl groups, such as glutathione, while it was independent of YAP1.
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Affiliation(s)
- Ranran Chen
- Key Lab of Science & Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 Renmin Road, Shanghai 201620, People's Republic of China
| | - Qian Zhu
- Key Lab of Science & Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 Renmin Road, Shanghai 201620, People's Republic of China
| | - Zhijia Fang
- Key Lab of Science & Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 Renmin Road, Shanghai 201620, People's Republic of China
| | - Zhiwei Huang
- Key Lab of Science & Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 Renmin Road, Shanghai 201620, People's Republic of China.,Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People's Republic of China
| | - Jing Sun
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, The Chinese Academy of Sciences, Xiguan Avenue 59, Xining, Qinghai Province 810001, People's Republic of China
| | - Min Peng
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, The Chinese Academy of Sciences, Xiguan Avenue 59, Xining, Qinghai Province 810001, People's Republic of China
| | - Ping Shi
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
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5
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Efficient Multicomponent Synthesis of Diverse Antibacterial Embelin-Privileged Structure Conjugates. Molecules 2020; 25:molecules25143290. [PMID: 32698422 PMCID: PMC7397138 DOI: 10.3390/molecules25143290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/17/2020] [Accepted: 07/17/2020] [Indexed: 12/21/2022] Open
Abstract
A library of embelin derivatives has been synthesized through a multicomponent reaction from embelin (1), aldehydes and privileged structures such as 4-hydroxycoumarin, 4-hydroxy-2H-pyran-2-one and 2-naphthol, in the presence of InCl3 as catalyst. This multicomponent reaction implies Knoevenagel condensation, Michael addition, intramolecular cyclization and dehydration. Many of the synthesized compounds were active and selective against Gram-positive bacteria, including one important multiresistant Staphylococcus aureus clinical isolate. It was found how the conjugation of diverse privileged substructure with embelin led to adducts having enhanced antibacterial activities.
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Eyong KO, Ketsemen HL, Zhao Z, Du L, Ingels A, Mathieu V, Kornienko A, Hull KG, Folefoc GN, Baskaran S, Romo D. Antiproliferative activity of naphthoquinones and indane carboxylic acids from lapachol against a panel of human cancer cell lines. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02545-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Xavier MR, Santos MMS, Queiroz MG, de Lima Silva MS, Goes AJS, De Morais Jr MA. Lawsone, a 2-hydroxy-1,4-naphthoquinone from Lawsonia inermis (henna), produces mitochondrial dysfunctions and triggers mitophagy in Saccharomyces cerevisiae. Mol Biol Rep 2019; 47:1173-1185. [DOI: 10.1007/s11033-019-05218-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 11/28/2019] [Accepted: 11/30/2019] [Indexed: 12/18/2022]
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Anaissi-Afonso L, Oramas-Royo S, Ayra-Plasencia J, Martín-Rodríguez P, García-Luis J, Lorenzo-Castrillejo I, Fernández-Pérez L, Estévez-Braun A, Machín F. Lawsone, Juglone, and β-Lapachone Derivatives with Enhanced Mitochondrial-Based Toxicity. ACS Chem Biol 2018; 13:1950-1957. [PMID: 29878754 DOI: 10.1021/acschembio.8b00306] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Naphthoquinones are among the most active natural products obtained from plants and microorganisms. Naphthoquinones exert their biological activities through pleiotropic mechanisms that include reactivity against cell nucleophiles, generation of reactive oxygen species (ROS), and inhibition of proteins. Here, we report a mechanistic antiproliferative study performed in the yeast Saccharomyces cerevisiae for several derivatives of three important natural naphthoquinones: lawsone, juglone, and β-lapachone. We have found that (i) the free hydroxyl group of lawsone and juglone modulates toxicity; (ii) lawsone and juglone derivatives differ in their mechanisms of action, with ROS generation being more important for the former; and (iii) a subset of derivatives possess the capability to disrupt mitochondrial function, with β-lapachones being the most potent compounds in this respect. In addition, we have cross-compared yeast results with antibacterial and antitumor activities. We discuss the relationship between the mechanistic findings, the antiproliferative activities, and the physicochemical properties of the naphthoquinones.
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Affiliation(s)
- Laura Anaissi-Afonso
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
- Universidad de La Laguna, 38206 Tenerife, Spain
| | - Sandra Oramas-Royo
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206 Tenerife, Spain
| | - Jessel Ayra-Plasencia
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
- Universidad de La Laguna, 38206 Tenerife, Spain
| | - Patricia Martín-Rodríguez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Departamento de Ciencias Clínicas, BIOPHARM, Universidad de Las Palmas de Gran Canaria, 35001 Las Palmas de Gran Canaria, Spain
| | - Jonay García-Luis
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
| | | | - Leandro Fernández-Pérez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS), Departamento de Ciencias Clínicas, BIOPHARM, Universidad de Las Palmas de Gran Canaria, 35001 Las Palmas de Gran Canaria, Spain
| | - Ana Estévez-Braun
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206 Tenerife, Spain
| | - Félix Machín
- Unidad de Investigación, Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
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β-lapachone and α-nor-lapachone modulate Candida albicans viability and virulence factors. J Mycol Med 2018; 28:314-319. [DOI: 10.1016/j.mycmed.2018.03.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 03/05/2018] [Accepted: 03/09/2018] [Indexed: 12/17/2022]
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10
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Eleutherio E, Brasil ADA, França MB, de Almeida DSG, Rona GB, Magalhães RSS. Oxidative stress and aging: Learning from yeast lessons. Fungal Biol 2018; 122:514-525. [DOI: 10.1016/j.funbio.2017.12.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/04/2017] [Accepted: 12/05/2017] [Indexed: 02/06/2023]
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Synthesis and antibacterial activity of new symmetric polyoxygenated dibenzofurans. Eur J Med Chem 2017; 141:178-187. [PMID: 29031065 DOI: 10.1016/j.ejmech.2017.09.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/08/2017] [Accepted: 09/27/2017] [Indexed: 11/23/2022]
Abstract
A series of symmetric polyoxygenated dibenzofurans with 2-methylbutyril moieties at C-4 and C-6 were obtained from commercial phloroglucinol through a sequence of reactions that include monoacylation, iodination, Suzuki-Miyaura coupling, oxidative dimerization and cyclization. Some of the compounds obtained were active against Gram-positive bacteria, including multiresistant Staphylococcus aureus clinical isolates. The dibenzofuran 28 with propyl chains at C-2 and C-8 exhibited the best antibacterial activity with values comparable to those of the natural dibenzofuran achyrofuran. From the obtained results some structure-activity relationships were outlined.
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Bian J, Li X, Wang N, Wu X, You Q, Zhang X. Discovery of quinone-directed antitumor agents selectively bioactivated by NQO1 over CPR with improved safety profile. Eur J Med Chem 2017; 129:27-40. [DOI: 10.1016/j.ejmech.2017.02.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/03/2017] [Accepted: 02/04/2017] [Indexed: 12/11/2022]
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13
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Repair of Oxidative DNA Damage in Saccharomyces cerevisiae. DNA Repair (Amst) 2017; 51:2-13. [PMID: 28189416 DOI: 10.1016/j.dnarep.2016.12.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 12/22/2016] [Accepted: 12/30/2016] [Indexed: 12/11/2022]
Abstract
Malfunction of enzymes that detoxify reactive oxygen species leads to oxidative attack on biomolecules including DNA and consequently activates various DNA repair pathways. The nature of DNA damage and the cell cycle stage at which DNA damage occurs determine the appropriate repair pathway to rectify the damage. Oxidized DNA bases are primarily repaired by base excision repair and nucleotide incision repair. Nucleotide excision repair acts on lesions that distort DNA helix, mismatch repair on mispaired bases, and homologous recombination and non-homologous end joining on double stranded breaks. Post-replication repair that overcomes replication blocks caused by DNA damage also plays a crucial role in protecting the cell from the deleterious effects of oxidative DNA damage. Mitochondrial DNA is also prone to oxidative damage and is efficiently repaired by the cellular DNA repair machinery. In this review, we discuss the DNA repair pathways in relation to the nature of oxidative DNA damage in Saccharomyces cerevisiae.
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Hueso-Falcón I, Amesty Á, Anaissi-Afonso L, Lorenzo-Castrillejo I, Machín F, Estévez-Braun A. Synthesis and biological evaluation of naphthoquinone-coumarin conjugates as topoisomerase II inhibitors. Bioorg Med Chem Lett 2016; 27:484-489. [PMID: 28040393 DOI: 10.1016/j.bmcl.2016.12.040] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 12/13/2016] [Accepted: 12/14/2016] [Indexed: 12/23/2022]
Abstract
Based on previous Topoisomerase II docking studies of naphthoquinone derivatives, a series of naphthoquinone-coumarin conjugates was synthesized through a multicomponent reaction from aromatic aldehydes, 4-hydroxycoumarin and 2-hydroxynaphthoquinone. The hybrid structures were evaluated against the α isoform of human topoisomerase II (hTopoIIα), Escherichia coli DNA Gyrase and E. coli Topoisomerase I. All tested compounds inhibited the hTopoIIα-mediated relaxation of negatively supercoiled circular DNA in the low micromolar range. This inhibition was specific since neither DNA Gyrase nor Topoisomerase I were affected. Cleavage assays pointed out that naphthoquinone-coumarins act by catalytically inhibiting hTopoIIα. ATPase assays and molecular docking studies further pointed out that the mode of action is related to the hTopoIIα ATP-binding site.
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Affiliation(s)
- Idaira Hueso-Falcón
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206, Spain
| | - Ángel Amesty
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206, Spain
| | - Laura Anaissi-Afonso
- Unidad de Investigación Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain
| | | | - Félix Machín
- Unidad de Investigación Hospital Universitario Nuestra Señora de La Candelaria, 38010 Tenerife, Spain.
| | - Ana Estévez-Braun
- Instituto Universitario de Bio-Orgánica (CIBICAN), Departamento de Química Orgánica, Universidad de La Laguna, 38206, Spain.
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