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Errázuriz León R, Araya Salcedo VA, Novoa San Miguel FJ, Llanquinao Tardio CRA, Tobar Briceño AA, Cherubini Fouilloux SF, de Matos Barbosa M, Saldías Barros CA, Waldman WR, Espinosa-Bustos C, Hornos Carneiro MF. Photoaged polystyrene nanoplastics exposure results in reproductive toxicity due to oxidative damage in Caenorhabditis elegans. Environ Pollut 2024; 348:123816. [PMID: 38508369 DOI: 10.1016/j.envpol.2024.123816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/15/2024] [Accepted: 03/16/2024] [Indexed: 03/22/2024]
Abstract
The increase of plastic production together with the incipient reuse/recycling system has resulted in massive discards into the environment. This has facilitated the formation of micro- and nanoplastics (MNPs) which poses major risk for environmental health. Although some studies have investigated the effects of pristine MNPs on reproductive health, the effects of weathered MNPs have been poorly investigated. Here we show in Caenorhabditis elegans that exposure to photoaged polystyrene nanoplastics (PSNP-UV) results in worse reproductive performance than pristine PSNP (i.e., embryonic/larval lethality plus a decrease in the brood size, accompanied by a high number of unfertilized eggs), besides it affects size and locomotion behavior. Those effects were potentially generated by reactive products formed during UV-irradiation, since we found higher levels of reactive oxygen species and increased expression of GST-4 in worms exposed to PSNP-UV. Those results are supported by physical-chemical characterization analyses which indicate significant formation of oxidative degradation products from PSNP under UV-C irradiation. Our study also demonstrates that PSNP accumulate predominantly in the gastrointestinal tract of C. elegans (with no accumulation in the gonads), being completely eliminated at 96 h post-exposure. We complemented the toxicological analysis of PSNP/PSNP-UV by showing that the activation of the stress response via DAF-16 is dependent of the nanoplastics accumulation. Our data suggest that exposure to the wild PSNP, i.e., polystyrene nanoplastics more similar to those actually found in the environment, results in more important reprotoxic effects. This is associated with the presence of degradation products formed during UV-C irradiation and their interaction with biological targets.
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Affiliation(s)
- Rocío Errázuriz León
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, 7820436, Chile
| | | | | | | | | | | | - Marcela de Matos Barbosa
- Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto/SP, 14040-901, Brazil
| | | | | | - Christian Espinosa-Bustos
- Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, 7820436, Chile
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Martinez-Rojas F, Espinosa-Bustos C, Ramirez G, Armijo F. Electrochemical oxidation of chlorpromazine, characterisation of products by mass spectroscopy and determination in pharmaceutical samples. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Osorio-Nieto U, Salas CO, Mendez-Alvarez D, Rivera G, Moreno-Rodriguez A, Perez-Cervera Y, Castillo-Real LM, Espinosa-Bustos C. 2,3-Diketopiperazine as potential scaffold to develop new anti-Chagasic agents. Med Chem Res 2022. [DOI: 10.1007/s00044-022-03003-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Paulino M, Espinosa-Bustos C, Bertrand J, Cabezas D, Mella J, Dávila B, Cerecetto H, Ballesteros-Casallas A, Salas CO. Development of 3D-QSAR and pharmacophoric models to design new anti- Trypanosoma cruzi agents based on 2-aryloxynaphthoquinone scaffold. SAR QSAR Environ Res 2022; 33:701-728. [PMID: 36106834 DOI: 10.1080/1062936x.2022.2120069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
In this work we have collected a set of 30 trypanosomicidal naphthoquinones and developed pharmacophoric and 3D-QSAR models as tools for the design of new potential anti-Chagasic compounds. Firstly, qualitative information was obtained from SAR and pharmacophoric models identifying some fragments around the 2-aryloxynaphthoquinone scaffold important for the antiparasitic activity. Then, 3D-QSAR CoMFA and CoMSIA models were developed. The models showed adequate statistical parameters where the steric, electrostatic, and hydrophobic features explain the trypanosomicidal effect. Therefore, to validate our models, we carried out the design, synthesis, and biological evaluation on T. cruzi epimastigotes of five new compounds (33a-e). According to CoMFA model, three out of five compounds showed pIC50 values within one logarithmic unit of deviation. The two compounds that did not fit the predictions were those with high lipophilicity, which agreed with the SAR and pharmacophore models. Docking and molecular dynamic studies were performed on T. cruzi trypanothione reductase, in a proposed binding site for this type of naphthoquinone. Interestingly, 33a-e showed the same interaction pattern as a naphthoquinone inhibitor (2). Finally, predicted drug-likeness properties indicated that 33a-e have optimal oral bioavailability. Thus, this study provides new in silico models for obtaining novel trypanosomicidal compounds.
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Affiliation(s)
- M Paulino
- Área Bioinformática, Departamento de Experimentación y Teoría de la Materia y sus Aplicaciones, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - C Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - J Bertrand
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - D Cabezas
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - J Mella
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
- Centro de Investigación Farmacopea Chilena, Escuela de Química y Farmacia, Facultad de Farmacia, Universidad de Valparaíso, Valparaíso, Chile
| | - B Dávila
- Grupo de Química Orgánica Medicinal, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - H Cerecetto
- Grupo de Química Orgánica Medicinal, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
- Área de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - A Ballesteros-Casallas
- Área Bioinformática, Departamento de Experimentación y Teoría de la Materia y sus Aplicaciones, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - C O Salas
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
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Bertrand J, Dostálová H, Kryštof V, Jorda R, Delgado T, Castro-Alvarez A, Mella J, Cabezas D, Faúndez M, Espinosa-Bustos C, Salas CO. Design, Synthesis, In Silico Studies and Inhibitory Activity towards Bcr-Abl, BTK and FLT3-ITD of New 2,6,9-Trisubstituted Purine Derivatives as Potential Agents for the Treatment of Leukaemia. Pharmaceutics 2022; 14:pharmaceutics14061294. [PMID: 35745866 PMCID: PMC9228270 DOI: 10.3390/pharmaceutics14061294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 12/04/2022] Open
Abstract
We report 31 new compounds designed, synthesized and evaluated on Bcr-Abl, BTK and FLT3-ITD as part of our program to develop 2,6,9-trisubstituted purine derivatives as inhibitors of oncogenic kinases. The design was inspired by the chemical structures of well-known kinase inhibitors and our previously developed purine derivatives. The synthesis of these purines was simple and used a microwave reactor for the final step. Kinase assays showed three inhibitors with high selectivity for each protein that were identified: 4f (IC50 = 70 nM for Bcr-Abl), 5j (IC50 = 0.41 μM for BTK) and 5b (IC50 = 0.38 μM for FLT-ITD). The 3D-QSAR analysis and molecular docking studies suggested that two fragments are potent and selective inhibitors of these three kinases: a substitution at the 6-phenylamino ring and the length and volume of the alkyl group at N-9. The N-7 and the N-methyl-piperazine moiety linked to the aminophenyl ring at C-2 are also requirements for obtaining the activity. Furthermore, most of these purine derivatives were shown to have a significant inhibitory effect in vitro on the proliferation of leukaemia and lymphoma cells (HL60, MV4-11, CEM, K562 and Ramos) at low concentrations. Finally, we show that the selected purines (4i, 5b and 5j) inhibit the downstream signalling of the respective kinases in cell models. Thus, this study provides new evidence regarding how certain chemical modifications of purine ring substituents provide novel inhibitors of target kinases as potential anti-leukaemia drugs.
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Affiliation(s)
- Jeanluc Bertrand
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago 7820436, Chile; (J.B.); (T.D.)
| | - Hana Dostálová
- Department of Experimental Biology, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; (H.D.); (R.J.)
| | - Vladimír Kryštof
- Department of Experimental Biology, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; (H.D.); (R.J.)
- Correspondence: (V.K.); (C.O.S.)
| | - Radek Jorda
- Department of Experimental Biology, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; (H.D.); (R.J.)
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 5, 779 00 Olomouc, Czech Republic
| | - Thalía Delgado
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago 7820436, Chile; (J.B.); (T.D.)
| | - Alejandro Castro-Alvarez
- Departamento de Ciencias Preclínicas, Facultad de Medicina, Universidad de La Frontera, Manuel Montt 112, Temuco 4780000, Chile;
| | - Jaime Mella
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Avenida Gran Bretaña 1111, Valparaíso 2360102, Chile; (J.M.); (D.C.)
- Facultad de Farmacia, Centro de Investigación Farmacopea Chilena, Universidad de Valparaíso, Avenida Gran Bretaña 1093, Valparaíso 2360102, Chile
| | - David Cabezas
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Avenida Gran Bretaña 1111, Valparaíso 2360102, Chile; (J.M.); (D.C.)
| | - Mario Faúndez
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago 7820436, Chile; (M.F.); (C.E.-B.)
| | - Christian Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago 7820436, Chile; (M.F.); (C.E.-B.)
| | - Cristian O. Salas
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago 7820436, Chile; (J.B.); (T.D.)
- Correspondence: (V.K.); (C.O.S.)
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Espinosa-Bustos C, Ortiz Pérez M, Gonzalez-Gonzalez A, Zarate AM, Rivera G, Belmont-Díaz JA, Saavedra E, Cuellar MA, Vázquez K, Salas CO. New Amino Naphthoquinone Derivatives as Anti-Trypanosoma cruzi Agents Targeting Trypanothione Reductase. Pharmaceutics 2022; 14:pharmaceutics14061121. [PMID: 35745694 PMCID: PMC9228152 DOI: 10.3390/pharmaceutics14061121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 12/25/2022] Open
Abstract
To develop novel chemotherapeutic alternatives for the treatment of Chagas disease, in this study, a set of new amino naphthoquinone derivatives were synthesised and evaluated in vitro on the epimastigote and trypomastigote forms of Trypanosoma cruzi strains (NINOA and INC-5) and on J774 murine macrophages. The design of the new naphthoquinone derivatives considered the incorporation of nitrogenous fragments with different substitution patterns present in compounds with activity on T. cruzi, and, thus, 19 compounds were synthesised in a simple manner. Compounds 2e and 7j showed the lowest IC50 values (0.43 µM against both strains for 2e and 0.19 µM and 0.92 µM for 7j). Likewise, 7j was more potent than the reference drug, benznidazole, and was more selective on epimastigotes. To postulate a possible mechanism of action, molecular docking studies were performed on T. cruzi trypanothione reductase (TcTR), specifically at a site in the dimer interface, which is a binding site for this type of naphthoquinone. Interestingly, 7j was one of the compounds that showed the best interaction profile on the enzyme; therefore, 7j was evaluated on TR, which behaved as a non-competitive inhibitor. Finally, 7j was predicted to have a good pharmacokinetic profile for oral administration. Thus, the naphthoquinone nucleus should be considered in the search for new trypanocidal agents based on our hit 7j.
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Affiliation(s)
- Christian Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 7820436, Chile;
| | - Mariana Ortiz Pérez
- Departamento de Parasitología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Francisco Villa 20, General Escobedo 66054, Mexico;
| | - Alonzo Gonzalez-Gonzalez
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Boulevard del Maestro s/n, Reynosa 88710, Mexico; (A.G.-G.); (G.R.)
| | - Ana María Zarate
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile;
| | - Gildardo Rivera
- Laboratorio de Biotecnología Farmacéutica, Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Boulevard del Maestro s/n, Reynosa 88710, Mexico; (A.G.-G.); (G.R.)
| | - Javier A. Belmont-Díaz
- Departamento de Bioquímica, Instituto Nacional de Cardiología Ignacio Chávez, México City 14080, Mexico; (J.A.B.-D.); (E.S.)
| | - Emma Saavedra
- Departamento de Bioquímica, Instituto Nacional de Cardiología Ignacio Chávez, México City 14080, Mexico; (J.A.B.-D.); (E.S.)
| | - Mauricio A. Cuellar
- Centro de Investigación Farmacopea Chilena, Escuela de Química y Farmacia, Facultad de Farmacia, Universidad de Valparaíso, Av. Gran Bretaña 1093, Valparaíso 2340000, Chile;
| | - Karina Vázquez
- Departamento de Parasitología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Francisco Villa 20, General Escobedo 66054, Mexico;
- Correspondence: (K.V.); (C.O.S.)
| | - Cristian O. Salas
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile;
- Correspondence: (K.V.); (C.O.S.)
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Becerra NA, Espinosa-Bustos C, Vázquez K, Rivera G, Paulino M, Cantero J, Nogueda B, Chacón-Vargas F, Castillo-Velazquez U, Rodríguez AFE, Toledo S, Moreno-Rodríguez A, Aranda M, Salas CO. Expanding the chemical space of aryloxy-naphthoquinones as potential anti-Chagasic agents: synthesis and trypanosomicidal activity. Med Chem Res 2021. [DOI: 10.1007/s00044-021-02809-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zárate AM, Espinosa-Bustos C, Guerrero S, Fierro A, Oyarzún-Ampuero F, Quest AFG, Di Marcotullio L, Loricchio E, Caimano M, Calcaterra A, González-Quiroz M, Aguirre A, Meléndez J, Salas CO. A New Smoothened Antagonist Bearing the Purine Scaffold Shows Antitumour Activity In Vitro and In Vivo. Int J Mol Sci 2021; 22:8372. [PMID: 34445078 PMCID: PMC8395040 DOI: 10.3390/ijms22168372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 12/14/2022] Open
Abstract
The Smoothened (SMO) receptor is the most druggable target in the Hedgehog (HH) pathway for anticancer compounds. However, SMO antagonists such as vismodegib rapidly develop drug resistance. In this study, new SMO antagonists having the versatile purine ring as a scaffold were designed, synthesised, and biologically tested to provide an insight to their mechanism of action. Compound 4s was the most active and the best inhibitor of cell growth and selectively cytotoxic to cancer cells. 4s induced cell cycle arrest, apoptosis, a reduction in colony formation and downregulation of PTCH and GLI1 expression. BODIPY-cyclopamine displacement assays confirmed 4s is a SMO antagonist. In vivo, 4s strongly inhibited tumour relapse and metastasis of melanoma cells in mice. In vitro, 4s was more efficient than vismodegib to induce apoptosis in human cancer cells and that might be attributed to its dual ability to function as a SMO antagonist and apoptosis inducer.
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Affiliation(s)
- Ana María Zárate
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 702843, Chile; (A.M.Z.); (A.F.)
| | - Christian Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 702843, Chile;
| | - Simón Guerrero
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, Sergio Livingstone 1007, Independencia, Santiago 8380492, Chile; (S.G.); (F.O.-A.); (A.F.G.Q.)
- Instituto de Investigación Interdisciplinar en Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad SEK (I3CBSEK), Fernando Manterola 0789, Providencia, Santiago 7520317, Chile
| | - Angélica Fierro
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 702843, Chile; (A.M.Z.); (A.F.)
| | - Felipe Oyarzún-Ampuero
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, Sergio Livingstone 1007, Independencia, Santiago 8380492, Chile; (S.G.); (F.O.-A.); (A.F.G.Q.)
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile
| | - Andrew F. G. Quest
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, Sergio Livingstone 1007, Independencia, Santiago 8380492, Chile; (S.G.); (F.O.-A.); (A.F.G.Q.)
- Laboratorio de Comunicaciones Celulares, Centro de Estudios en Ejercicio, Metabolismo y Cáncer (CEMC), Program of Cellular and Molecular Biology, Instituto de Ciencias Biomédicas (ICBM), Facultad de Medicina, Universidad de Chile, Independencia 1027, Santiago 8380453, Chile
| | - Lucia Di Marcotullio
- Laboratory Affiliated to Insituto Pasteur Italia, Fondazione Cenci Bognetti, Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 291, 00161 Rome, Italy;
| | - Elena Loricchio
- Center For Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy;
| | - Miriam Caimano
- Department of Molecular Medicine, Sapienza University of Rome, Viale Regina Elena 291, 00161 Rome, Italy;
| | - Andrea Calcaterra
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy;
| | - Matías González-Quiroz
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Universidad de Chile, Independencia 1027, Santiago 8380453, Chile;
| | - Adam Aguirre
- Laboratorio de Medicina Traslacional, Fundación Arturo López Pérez, Rancagua 878, Lower Fifth Floor, Providencia, Santiago 8320000, Chile;
| | - Jaime Meléndez
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 702843, Chile;
| | - Cristian O. Salas
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago 702843, Chile; (A.M.Z.); (A.F.)
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Bridi R, Lino von Poser G, Gómez M, Andia ME, Oyarzún JE, Núñez P, Vasquez Arias AJ, Espinosa-Bustos C. Hepatoprotective species from the Chilean medicinal flora: Junellia spathulata (Verbenaceae). J Ethnopharmacol 2021; 267:113543. [PMID: 33152429 DOI: 10.1016/j.jep.2020.113543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/22/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Chilean population relies on medicinal plants for treating a wide range of illnesses, especially those of the gastrointestinal system. Junellia spathulata (Gillies & Hook.) Moldenke var. spathulata (Verbenaceae), called as "verbena-azul-de-cordilleira", is a medicinal plant native to Argentina and Chile traditionally used for treating digestive disorders. Although the species of the genus are important as therapeutic resources for the Andean population, the plants are very scarcely studied. AIMS OF THE STUDY The purpose of the present study was to find out the main constituents and investigate the protective effect of J. spathulata against oxidative stress induced by the potent oxidant 2,2'-azobis (2-amidinopropane) dihydrochloride (AAPH) in human hepatoblastoma cells. MATERIALS AND METHODS The crude methanol extract of J. spathulata and an iridoid obtained by chromatographic processes were tested to access the hepatoprotective effect and cytotoxicity in HepG2 cell. In addition, the reducing power of the samples and their ability to scavenge free radicals were evaluated using FRAP and ORAC assay systems. RESULTS The iridoid asperuloside, the main compound of the crude methanol extract of J. spathulata, was isolated and identified by means of NMR analysis. The crude methanol extract of J. spathulata and asperuloside protected HepG2 cells against oxidative damage triggered by AAPH-derived free radicals. This effect can be credited to the ability of the extract and asperuloside to protect the liver cells from chemical-induced injury, which might be correlated to their free radical scavenging potential. CONCLUSIONS This study experimentally evidenced the ethnopharmacological usefulness of J. spathulata as a treatment of digestive disorders. Our result could stimulate further investigations of hepatoprotective agents in other Chilean Junellia species.
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Affiliation(s)
- Raquel Bridi
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, 702843, Chile.
| | - Gilsane Lino von Poser
- Departamento de Produção de Matéria-Prima, Faculdade de Farmácia - UFRGS, Porto Alegre, Brazil
| | - Miguel Gómez
- Departamento de Ciencias Vegetales, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Chile
| | - Marcelo E Andia
- Departamento de Radiología y Centro de Imágenes Biomédicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile; Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago, Chile
| | - Juan Esteban Oyarzún
- Departamento de Radiología y Centro de Imágenes Biomédicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile; Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago, Chile
| | - Paula Núñez
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, 702843, Chile
| | - Ariadsna Jael Vasquez Arias
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, 702843, Chile
| | - Christian Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago, 702843, Chile
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Espinosa-Bustos C, Canales C, Ramírez G, Jaque P, Salas CO. Unveiling interactions between DNA and cytotoxic 2-arylpiperidinyl-1,4-naphthoquinone derivatives: A combined electrochemical and computational study. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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O. Salas C, Zarate AM, Kryštof V, Mella J, Faundez M, Brea J, Loza MI, Brito I, Hendrychová D, Jorda R, Cabrera AR, Tapia RA, Espinosa-Bustos C. Promising 2,6,9-Trisubstituted Purine Derivatives for Anticancer Compounds: Synthesis, 3D-QSAR, and Preliminary Biological Assays. Int J Mol Sci 2019; 21:ijms21010161. [PMID: 31881717 PMCID: PMC6981454 DOI: 10.3390/ijms21010161] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/17/2019] [Accepted: 12/20/2019] [Indexed: 12/11/2022] Open
Abstract
We designed, synthesized, and evaluated novel 2,6,9-trisubstituted purine derivatives for their prospective role as antitumor compounds. Using simple and efficient methodologies, 31 compounds were obtained. We tested these compounds in vitro to draw conclusions about their cell toxicity on seven cancer cells lines and one non-neoplastic cell line. Structural requirements for antitumor activity on two different cancer cell lines were analyzed with SAR and 3D-QSAR. The 3D-QSAR models showed that steric properties could better explain the cytotoxicity of compounds than electronic properties (70% and 30% of contribution, respectively). From this analysis, we concluded that an arylpiperazinyl system connected at position 6 of the purine ring is beneficial for cytotoxic activity, while the use of bulky systems at position C-2 of the purine is not favorable. Compound 7h was found to be an effective potential agent when compared with a currently marketed drug, cisplatin, in four out of the seven cancer cell lines tested. Compound 7h showed the highest potency, unprecedented selectivity, and complied with all the Lipinski rules. Finally, it was demonstrated that 7h induced apoptosis and caused cell cycle arrest at the S-phase on HL-60 cells. Our study suggests that substitution in the purine core by arylpiperidine moiety is essential to obtain derivatives with potential anticancer activity.
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Affiliation(s)
- Cristian O. Salas
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago de Chile 702843, Chile; (A.M.Z.); (R.A.T.)
- Correspondence: (C.O.S.); (C.E.-B.); Tel.: +56-22-354-4427 (C.O.S.); +56-22-354-4838 (C.E.-B.)
| | - Ana Maria Zarate
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago de Chile 702843, Chile; (A.M.Z.); (R.A.T.)
| | - Vladimir Kryštof
- Laboratory of Growth Regulators, Palacký University and Institute of Experimental Botany AS CR, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (V.K.); (D.H.); (R.J.)
| | - Jaime Mella
- Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, 2360102, Av. Gran Bretaña 1111, Playa Ancha, Valparaíso, Casilla 5030, Chile;
| | - Mario Faundez
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago de Chile 702843, Chile;
| | - Jose Brea
- Innopharma Screening Platform-BioFarma Research Group, Centre for Research in Molecular Medicine and Chronic Diseases, University of Santiago de Compostela, Santiago de Compostela 15706, Spain; (J.B.); (M.I.L.)
| | - María Isabel Loza
- Innopharma Screening Platform-BioFarma Research Group, Centre for Research in Molecular Medicine and Chronic Diseases, University of Santiago de Compostela, Santiago de Compostela 15706, Spain; (J.B.); (M.I.L.)
| | - Ivan Brito
- Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta, Av. Angamos 601, Antofagasta 1240000, Chile;
| | - Denisa Hendrychová
- Laboratory of Growth Regulators, Palacký University and Institute of Experimental Botany AS CR, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (V.K.); (D.H.); (R.J.)
| | - Radek Jorda
- Laboratory of Growth Regulators, Palacký University and Institute of Experimental Botany AS CR, Slechtitelu 27, 783 71 Olomouc, Czech Republic; (V.K.); (D.H.); (R.J.)
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Hnevotinská 5, 77900 Olomouc, Czech Republic
| | - Alan R. Cabrera
- Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago de Chile 702843, Chile;
| | - Ricardo A. Tapia
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago de Chile 702843, Chile; (A.M.Z.); (R.A.T.)
| | - Christian Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago de Chile 702843, Chile;
- Correspondence: (C.O.S.); (C.E.-B.); Tel.: +56-22-354-4427 (C.O.S.); +56-22-354-4838 (C.E.-B.)
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Cañete-Molina Á, Espinosa-Bustos C, González-Castro M, Faúndez M, Mella J, Tapia RA, Cabrera AR, Brito I, Aguirre A, Salas CO. Design, synthesis, cytotoxicity and 3D-QSAR analysis of new 3,6-disubstituted-1,2,4,5-tetrazine derivatives as potential antitumor agents. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2017.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Frank A, Meza-Arriagada F, Salas CO, Espinosa-Bustos C, Stark H. Nature-inspired pyrrolo[2,3-d]pyrimidines targeting the histamine H 3 receptor. Bioorg Med Chem 2019; 27:3194-3200. [PMID: 31176569 DOI: 10.1016/j.bmc.2019.05.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/05/2019] [Accepted: 05/28/2019] [Indexed: 01/22/2023]
Abstract
Inspired by marine compounds the derivatization of the natural pyrrolo[2,3-d]pyrimidine lead scaffold led to a series of novel compounds targeting the histamine H3 receptor. The focus was set on improved binding towards the receptor and to establish an initial structure-activity relationship for this compound class based on the lead structure (compound V, Ki value of 126 nM). As highest binding affinities were found with 1,4-bipiperidines as basic part of the ligands, further optimization was focused on 4-([1,4'-bipiperidin]-1'-yl)-pyrrolo[2,3-d]pyrimidines. Related pyrrolo[2,3-d]pyrimidines that were isolated from marine sponges like 4-amino-5-bromopyrrolo[2,3-d]pyrimidine (compound III), showed variations in halogenation pattern, though in a next step the impact of halogenation at 2-position was evaluated. The chloro variations did not improve the affinity compared to the dehalogenated compounds. However, the simultaneous introduction of lipophilic cores with electron-withdrawing substitution patterns in 7-position and dehalogenation at 2-position (11b, 12b) resulted in compounds with significantly higher binding affinities (Ki values of 7 nM and 6 nM, respectively) than the initial lead structure compound V. The presented structures allow for a reasonable structure-activity relationship of pyrrolo[2,3-d]pyrimidines as histamine H3 receptor ligands and yielded novel lead structures within the natural compound library against this target.
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Affiliation(s)
- Annika Frank
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitaetsstr. 1, 40225 Duesseldorf, Germany
| | - Francisco Meza-Arriagada
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 6094411, Chile
| | - Cristian O Salas
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 6094411, Chile
| | - Christian Espinosa-Bustos
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 6094411, Chile.
| | - Holger Stark
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitaetsstr. 1, 40225 Duesseldorf, Germany.
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Espinosa-Bustos C, Frank A, Arancibia-Opazo S, Salas CO, Fierro A, Stark H. New lead elements for histamine H3 receptor ligands in the pyrrolo[2,3-d]pyrimidine class. Bioorg Med Chem Lett 2018; 28:2890-2893. [DOI: 10.1016/j.bmcl.2018.07.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/11/2018] [Accepted: 07/12/2018] [Indexed: 11/29/2022]
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Cabrera AR, Espinosa-Bustos C, Faúndez M, Meléndez J, Jaque P, Daniliuc CG, Aguirre A, Rojas RS, Salas CO. New imidoyl-indazole platinum (II) complexes as potential anticancer agents: Synthesis, evaluation of cytotoxicity, cell death and experimental-theoretical DNA interaction studies. J Inorg Biochem 2017. [PMID: 28648925 DOI: 10.1016/j.jinorgbio.2017.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Four new neutral N,N imidoyl-indazole ligands (L1, L3, L6, L7) and six new Pt(II)-based complexes (C1-5 and C7) were synthesized and characterized by spectroscopic and spectrometric techniques. Additionally, compounds L6, L7, C3, C5 and C7 were analyzed using X-ray diffraction. An evaluation of cytotoxicity and cell death in vitro for both ligands and complexes was performed by colorimetric assay and flow cytometry, in four cancer cell lines and VERO cells as the control, respectively. Cytotoxicity and selectivity demonstrated by each compound were dependent on the cancer cell line assayed. IC50 values of complexes C1-5 and C7 were lower than those exhibited for the reference drug cisplatin, and selectivity of these complexes was in general terms greater than cisplatin on three cancer cell lines studied. In HL60 cells, complexes C1 and C5 exhibited the lowest values of IC50 and were almost five times more selective than cisplatin. Flow cytometry results suggest that each complex predominantly induced necrosis, and its variant necroptosis, instead of apoptosis in all cancer cell lines studied. DNA binding assays, using agarose gel electrophoresis and UV-visible spectrophotometry studies, displayed a strong interaction only between C4 and DNA. In fact, theoretical calculations showed that C4-DNA binding complex was the most thermodynamic favorable interaction among the complexes in study. Overall, induction of cell death by dependent and independent-DNA-metal compound interactions were possible using imidoyl-indazole Pt(II) complexes as anticancer agents.
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Affiliation(s)
- Alan R Cabrera
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile; Universidad Bernardo O'Higgins, Departamento de Ciencias Químicas y Biológicas, Laboratorio de Bionanotecnología, General Gana 1702, Santiago, Chile.
| | - Christian Espinosa-Bustos
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile
| | - Mario Faúndez
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile
| | - Jaime Meléndez
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile
| | - Pablo Jaque
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Av. República 275, Santiago, Chile; Nucleus Millennium of Chemical Processes and Catalysis, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile
| | - Constantin G Daniliuc
- Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
| | - Adam Aguirre
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile
| | - Rene S Rojas
- Nucleus Millennium of Chemical Processes and Catalysis, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile
| | - Cristian O Salas
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile; Nucleus Millennium of Chemical Processes and Catalysis, Faculty of Chemistry, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 702843 Santiago, Chile.
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Espinosa-Bustos C, Villegas A, Salas CO. A convenient and simple synthesis of N-aryl-pyrrolopyrimidines using boronic acids and promoted by copper (II) acetate. ARKIVOC 2017. [DOI: 10.24820/ark.5550190.p009.952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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17
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Espinosa-Bustos C, Cortés-Arriagada D, Soto-Arriaza MA, Robinson-Duggon J, Pizarro N, Cabrera AR, Fuentealba D, Salas CO. Fluorescence properties of aurone derivatives: an experimental and theoretical study with some preliminary biological applications. Photochem Photobiol Sci 2017. [DOI: 10.1039/c7pp00078b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we explored the fluorescence properties of eight aurone derivatives bearing methoxy groups and bromine atoms as substituents in the benzene rings.
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Affiliation(s)
- Christian Espinosa-Bustos
- Departamento de Química Orgánica
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago 6094411
- Chile
| | - Diego Cortés-Arriagada
- Programa Institucional de Fomento a la Investigación
- Desarrollo e Innovación. Universidad Tecnológica Metropolitana
- Santiago
- Chile
| | - Marco A. Soto-Arriaza
- Departamento de Química Física
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago 6094411
- Chile
| | - José Robinson-Duggon
- Departamento de Química Física
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago 6094411
- Chile
| | - Nancy Pizarro
- Departamento de Ciencias Químicas
- Facultad de Ciencias Exactas
- Universidad Andrés Bello
- Viña del Mar 2531015
- Chile
| | - Alan R. Cabrera
- Departamento de Química Orgánica
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago 6094411
- Chile
| | - Denis Fuentealba
- Departamento de Química Física
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago 6094411
- Chile
| | - Cristian O. Salas
- Departamento de Química Orgánica
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago 6094411
- Chile
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González B, del Valle MA, Díaz FR, Espinosa-Bustos C, Ramírez AMR, Hernández LA. Synthesis, characterization, electropolymerization, and possible utilities of a new ruthenium-thiophene complex. J Appl Polym Sci 2016. [DOI: 10.1002/app.43559] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Beatriz González
- Laboratorio de Electroquímica de Polímeros, Departamento de Química Inorgánica, Facultad de Química; Pontificia Universidad Católica de Chile, Avenida V. Mackenna; 4860 Macul 7820436 Santiago Chile
| | - M. Angélica del Valle
- Laboratorio de Electroquímica de Polímeros, Departamento de Química Inorgánica, Facultad de Química; Pontificia Universidad Católica de Chile, Avenida V. Mackenna; 4860 Macul 7820436 Santiago Chile
| | - Fernando R. Díaz
- Departamento de Química Orgánica, Facultad de Química; Pontificia Universidad Católica de Chile, Avenida V. Mackenna; 4860 Macul 7820436 Santiago Chile
| | - Christian Espinosa-Bustos
- Departamento de Química Orgánica, Facultad de Química; Pontificia Universidad Católica de Chile, Avenida V. Mackenna; 4860 Macul 7820436 Santiago Chile
| | - Andrés M. R. Ramírez
- Laboratorio de Electroquímica de Polímeros, Departamento de Química Inorgánica, Facultad de Química; Pontificia Universidad Católica de Chile, Avenida V. Mackenna; 4860 Macul 7820436 Santiago Chile
| | - Loreto A. Hernández
- Laboratorio de Electroquímica de Polímeros, Departamento de Química Inorgánica, Facultad de Química; Pontificia Universidad Católica de Chile, Avenida V. Mackenna; 4860 Macul 7820436 Santiago Chile
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Calderón-Arancibia J, Espinosa-Bustos C, Cañete-Molina Á, Tapia RA, Faúndez M, Torres MJ, Aguirre A, Paulino M, Salas CO. Synthesis and pharmacophore modelling of 2,6,9-trisubstituted purine derivatives and their potential role as apoptosis-inducing agents in cancer cell lines. Molecules 2015; 20:6808-26. [PMID: 25884555 PMCID: PMC6272238 DOI: 10.3390/molecules20046808] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 11/16/2022] Open
Abstract
A series of 2,6,9-trisubstituted purine derivatives have been synthesized and investigated for their potential role as antitumor agents. Twelve compounds were obtained by a three step synthetic procedure using microwave irradiation in a pivotal step. All compounds were evaluated in vitro to determine their potential effect on cell toxicity by the MTT method and flow cytometry analysis on four cancer cells lines and Vero cells. Three out of twelve compounds were found to be promising agents compared to a known and effective anticancer drug, etoposide, in three out of four cancer cell lines assayed with considerable selectivity. Preliminary flow cytometry data suggests that compounds mentioned above induce apoptosis on these cells. The main structural requirements for their activity for each cancer cell line were characterized with a preliminary pharmacophore model, which identified aromatic centers, hydrogen acceptor/donor center and a hydrophobic area. These features were consistent with the cytotoxic activity of the assayed compounds.
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Affiliation(s)
- Jeannette Calderón-Arancibia
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
| | - Christian Espinosa-Bustos
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
| | - Álvaro Cañete-Molina
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
| | - Ricardo A Tapia
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
| | - Mario Faúndez
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
| | - Maria Jose Torres
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
| | - Adam Aguirre
- Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
| | - Margot Paulino
- Centro de Bioinformática Estructural-DETEMA, Facultad de Química, Universidad de la República, C.C. 1157 Montevideo, Uruguay.
| | - Cristian O Salas
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, 702843 Santiago de Chile, Chile.
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González B, del Valle M, Díaz F, Espinosa-Bustos C, Ramírez A, Hernández L. Synthesis and electrochemical characterization of new ruthenium–terthiophene complexes. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.01.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Espinosa-Bustos C, Lagos CF, Romero-Parra J, Zárate AM, Mella-Raipán J, Pessoa-Mahana H, Recabarren-Gajardo G, Iturriaga-Vásquez P, Tapia RA, Pessoa-Mahana CD. Design, Synthesis, Biological Evaluation and Binding Mode Modeling of Benzimidazole Derivatives Targeting the Cannabinoid Receptor Type 1. Arch Pharm (Weinheim) 2015; 348:81-8. [DOI: 10.1002/ardp.201400201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 10/26/2014] [Accepted: 10/30/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Christian Espinosa-Bustos
- Department of Pharmacy, Faculty of Chemistry; Pontificia Universidad Catolica de Chile; Santiago Chile
| | - Carlos F. Lagos
- Department of Endocrinology, School of Medicine; Pontificia Universidad Catolica de Chile; Santiago Chile
| | - Javier Romero-Parra
- Department of Pharmacy, Faculty of Chemistry; Pontificia Universidad Catolica de Chile; Santiago Chile
| | - Ana M. Zárate
- Department of Pharmacy, Faculty of Chemistry; Pontificia Universidad Catolica de Chile; Santiago Chile
| | - Jaime Mella-Raipán
- Institute of Chemistry and Biochemistry, Faculty of Science; Universidad de Valparaiso, Playa Ancha; Valparaíso Chile
| | - Hernán Pessoa-Mahana
- Department of Organic and Physical Chemistry, Faculty of Chemical and Pharmaceutical Sciences; Universidad de Chile; Santiago Chile
| | | | | | - Ricardo A. Tapia
- Department of Organic Chemistry, Faculty of Chemistry; Pontificia Universidad Catolica de Chile; Santiago Chile
| | - C. David Pessoa-Mahana
- Department of Pharmacy, Faculty of Chemistry; Pontificia Universidad Catolica de Chile; Santiago Chile
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Vázquez K, Espinosa-Bustos C, Soto-Delgado J, Tapia RA, Varela J, Birriel E, Segura R, Pizarro J, Cerecetto H, González M, Paulino M, Salas CO. New aryloxy-quinone derivatives as potential anti-Chagasic agents: synthesis, trypanosomicidal activity, electrochemical properties, pharmacophore elucidation and 3D-QSAR analysis. RSC Adv 2015. [DOI: 10.1039/c5ra10122k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A set of new aryloxy-quinones were synthesized and evaluated in vitro against the epimastigote form of Trypanosoma cruzi and their unspecific cytotoxicity was tested on murine macrophages J-774 cells.
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Morales-Camilo N, Salas CO, Sanhueza C, Espinosa-Bustos C, Sepúlveda-Boza S, Reyes-Parada M, Gonzalez-Nilo F, Caroli-Rezende M, Fierro A. Synthesis, Biological Evaluation, and Molecular Simulation of Chalcones and Aurones as Selective MAO-B Inhibitors. Chem Biol Drug Des 2014; 85:685-95. [PMID: 25346162 DOI: 10.1111/cbdd.12458] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/11/2014] [Accepted: 10/12/2014] [Indexed: 11/28/2022]
Abstract
A series of chalcones and aurones were synthesized and evaluated in vitro as monoamine oxidase inhibitors (MAOi). Our results show that aurones, which had not been previously reported as MAOi, are MAO-B inhibitors. Thus, both families inhibited selectively the B isoform of MAO in the micromolar range, offering novel scaffolds for the design of new and potent MAO inhibitors. The main structural requirements for their activity were characterized with the aid of 3D-QSAR and docking studies.
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Affiliation(s)
- Nicole Morales-Camilo
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago de Chile, 702843, Chile
| | - Cristian O Salas
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago de Chile, 702843, Chile
| | - Claudia Sanhueza
- Escuela de Medicina, Facultad de Ciencias Médicas, Universidad de Santiago, Casilla 442, Correo 2, Santiago, Chile
| | - Christian Espinosa-Bustos
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago de Chile, 702843, Chile
| | - Silvia Sepúlveda-Boza
- Escuela de Medicina, Facultad de Ciencias Médicas, Universidad de Santiago, Casilla 442, Correo 2, Santiago, Chile
| | - Miguel Reyes-Parada
- Escuela de Medicina, Facultad de Ciencias Médicas, Universidad de Santiago, Casilla 442, Correo 2, Santiago, Chile.,Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 8910124, Chile
| | - Fernando Gonzalez-Nilo
- Universidad Andrés Bello, Facultad de Ciencias Biológicas, Centro de Bioinformática y Biología Integrativa, Santiago 8370146, Chile
| | - Marcos Caroli-Rezende
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, 9170022, Chile
| | - Angélica Fierro
- Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago de Chile, 702843, Chile
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Tapia RA, Salas CO, Vázquez K, Espinosa-Bustos C, Soto-Delgado J, Varela J, Birriel E, Cerecetto H, González M, Paulino M. Synthesis and biological characterization of new aryloxyindole-4,9-diones as potent trypanosomicidal agents. Bioorg Med Chem Lett 2014; 24:3919-22. [DOI: 10.1016/j.bmcl.2014.06.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/12/2014] [Accepted: 06/16/2014] [Indexed: 10/25/2022]
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Recabarren-Gajardo G, Gacitúa M, Murueva I, Romero J, Espinosa-Bustos C, Mella-Raipán J, del Valle MA, Pessoa-Mahana CD, Tapia R. Synthesis, characterization, and electrochemical studies of new 5- and 6-nitro N
-acyl-1H
-indazoles. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1843] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pessoa-Mahana D, Espinosa-Bustos C, Mella-Raipán J, Canales-Pacheco J, Pessoa-Mahana H. Microwave-assisted synthesis and regioisomeric structural elucidation of novel benzimidazo[1,2d][1,4]benzodiazepinone derivatives. ARKIVOC 2009. [DOI: 10.3998/ark.5550190.0010.c11] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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