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OUP accepted manuscript. J Pharm Pharmacol 2022; 74:1140-1151. [DOI: 10.1093/jpp/rgac020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 03/05/2022] [Indexed: 11/12/2022]
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Izumi C, Laure HJ, Barbosa NG, Hassibe Thomé C, Aguiar Ferreira G, Paulo Barreto Sousa J, Peporine Lopes N, César Rosa J. Sequesterpene Lactones Isolated from a Brazilian Cerrado Plant ( Eremanthus spp. ) as Anti-Proliferative Compounds, Characterized by Functional and Proteomic Analysis, are Candidates for New Therapeutics in Glioblastoma. Int J Mol Sci 2020; 21:ijms21134713. [PMID: 32630308 PMCID: PMC7369765 DOI: 10.3390/ijms21134713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 12/13/2022] Open
Abstract
Gliomas are responsible for more than 60% of all primary brain tumors. Glioblastoma multiforme (GBM), a grade IV tumor (WHO), is one of the most frequent and malignant gliomas. Despite two decades of advances in the discovery of new markers for GBM, the chemotherapy of choice falls to temozolomide after surgery and radiotherapy, which are not enough to increase the survival of patients to more than 15 months. It is urgent to discover new anti-glioma compounds. Many compounds derived from natural products have been used in the development of anti-tumor drugs. In this work, we have screened six low molecular weight sesquiterpene lactones, isolated from Eremanthus spp., and studied their function as anti-proliferative agents against GBM strains. We demonstrated that two of them, goyazensolide and lychnofolide, were effective in reducing cell viability, preventing the formation of anchorage-dependent colony and were able to pass through a mimetic blood-brain barrier making them candidates for glioma therapy, being more potent than temozolomide, according to in vitro assays for the cell lines tested. Proteomic analysis revealed a number of altered proteins involved in glycolytic metabolism and cellular catabolism.
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Affiliation(s)
- Clarice Izumi
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
- Correspondence: ; Tel.: +55-16-2101-9366
| | - Helen Julie Laure
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
| | - Nayara Gonçalves Barbosa
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
| | - Carolina Hassibe Thomé
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil; (C.H.T.); (G.A.F.)
| | - Germano Aguiar Ferreira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil; (C.H.T.); (G.A.F.)
| | - João Paulo Barreto Sousa
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil; (J.P.B.S.); (N.P.L.)
| | - Norberto Peporine Lopes
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil; (J.P.B.S.); (N.P.L.)
| | - José César Rosa
- Protein Chemistry Center and Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil; (H.J.L.); (N.G.B.); (J.C.R.)
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Caraballo-Rodríguez AM, Dorrestein PC, Pupo MT. Molecular inter-kingdom interactions of endophytes isolated from Lychnophora ericoides. Sci Rep 2017; 7:5373. [PMID: 28710400 PMCID: PMC5511137 DOI: 10.1038/s41598-017-05532-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 05/30/2017] [Indexed: 11/18/2022] Open
Abstract
The importance of microbial natural products has been widely demonstrated in the search for new antibiotics. However, the functional role of microbial metabolites in nature remains to be deciphered. Several natural products are known to mediate microbial interactions through metabolic exchange. One approach to investigate metabolic exchange in the laboratory is through microbial interactions. Here, we describe the chemical study of selected endophytes isolated from the Brazilian medicinal plant Lychnophora ericoides by pairwise inter-kingdom interactions in order to correlate the impact of co-cultivation to their metabolic profiles. Combining mass spectrometry tools and NMR analyses, a total of 29 compounds were identified. These compounds are members of polyene macrocycles, pyrroloindole alkaloids, angucyclines, and leupeptins chemical families. Two of the identified compounds correspond to a new fungal metabolite (29) and a new actinobacterial angucycline-derivative (23). Our results revealed a substantial arsenal of small molecules induced by microbial interactions, as we begin to unravel the complexity of microbial interactions associated with endophytic systems.
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Affiliation(s)
- Andrés M Caraballo-Rodríguez
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-903, Brazil
| | - Pieter C Dorrestein
- Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California - San Diego, La Jolla, CA, 92093, USA
| | - Monica T Pupo
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, 14040-903, Brazil.
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Conti R, Chagas FO, Caraballo-Rodriguez AM, Melo WGDP, do Nascimento AM, Cavalcanti BC, de Moraes MO, Pessoa C, Costa-Lotufo LV, Krogh R, Andricopulo AD, Lopes NP, Pupo MT. Endophytic Actinobacteria from the Brazilian Medicinal Plant Lychnophora ericoides Mart. and the Biological Potential of Their Secondary Metabolites. Chem Biodivers 2016; 13:727-36. [PMID: 27128202 DOI: 10.1002/cbdv.201500225] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 01/14/2016] [Indexed: 12/25/2022]
Abstract
Endophytic actinobacteria from the Brazilian medicinal plant Lychnophora ericoides were isolated for the first time, and the biological potential of their secondary metabolites was evaluated. A phylogenic analysis of isolated actinobacteria was accomplished with 16S rRNA gene sequencing, and the predominance of the genus Streptomyces was observed. All strains were cultured on solid rice medium, and ethanol extracts were evaluated with antimicrobial and cytotoxic assays against cancer cell lines. As a result, 92% of the extracts showed a high or moderate activity against at least one pathogenic microbial strain or cancer cell line. Based on the biological and chemical analyses of crude extracts, three endophytic strains were selected for further investigation of their chemical profiles. Sixteen compounds were isolated, and 3-hydroxy-4-methoxybenzamide (9) and 2,3-dihydro-2,2-dimethyl-4(1H)-quinazolinone (15) are reported as natural products for the first time in this study. The biological activity of the pure compounds was also assessed. Compound 15 displayed potent cytotoxic activity against all four tested cancer cell lines. Nocardamine (2) was only moderately active against two cancer cell lines but showed strong activity against Trypanosoma cruzi. Our results show that endophytic actinobacteria from L. ericoides are a promising source of bioactive compounds.
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Affiliation(s)
- Raphael Conti
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil.,CEPID-CIBFar - Centro de Pesquisa e Inovação em Biodiversidade e Fármacos, FAPESP, São Paulo, SP, Brazil
| | - Fernanda Oliveira Chagas
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil.,CEPID-CIBFar - Centro de Pesquisa e Inovação em Biodiversidade e Fármacos, FAPESP, São Paulo, SP, Brazil
| | - Andrés Mauricio Caraballo-Rodriguez
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil.,CEPID-CIBFar - Centro de Pesquisa e Inovação em Biodiversidade e Fármacos, FAPESP, São Paulo, SP, Brazil
| | - Weilan Gomes da Paixão Melo
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil.,CEPID-CIBFar - Centro de Pesquisa e Inovação em Biodiversidade e Fármacos, FAPESP, São Paulo, SP, Brazil
| | | | | | | | - Cláudia Pessoa
- Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil.,Fundação Oswaldo Cruz (Fiocruz), Fortaleza, CE, Brazil
| | | | - Renata Krogh
- CEPID-CIBFar - Centro de Pesquisa e Inovação em Biodiversidade e Fármacos, FAPESP, São Paulo, SP, Brazil.,Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil
| | - Adriano Defini Andricopulo
- CEPID-CIBFar - Centro de Pesquisa e Inovação em Biodiversidade e Fármacos, FAPESP, São Paulo, SP, Brazil.,Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil
| | - Norberto Peporine Lopes
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil
| | - Mônica Tallarico Pupo
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil. .,CEPID-CIBFar - Centro de Pesquisa e Inovação em Biodiversidade e Fármacos, FAPESP, São Paulo, SP, Brazil.
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Sousa JPB, Nogueira EF, Ferreira LS, Lopes NP, Lopes JLC. Validation of analytical procedures using HPLC-ELSD to determine six sesquiterpene lactones inEremanthusspecies. Biomed Chromatogr 2015; 30:484-93. [DOI: 10.1002/bmc.3576] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 07/13/2015] [Accepted: 07/28/2015] [Indexed: 11/07/2022]
Affiliation(s)
- João Paulo B. Sousa
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
| | - Elídia F. Nogueira
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
| | - Leandro S. Ferreira
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
| | - Norberto P. Lopes
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
| | - João Luis C. Lopes
- Núcleo de Pesquisas de Produtos Naturais e Sintéticos, Faculdade de Ciências Farmacêuticas de Ribeirão Preto; Universidade de São Paulo; Ribeirão Preto SP Brazil
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Acuña UM, Shen Q, Ren Y, Lantvit DD, Wittwer JA, Kinghorn AD, Swanson SM, de Blanco EJC. Goyazensolide Induces Apoptosis in Cancer Cells in vitro and in vivo. INTERNATIONAL JOURNAL OF CANCER RESEARCH 2013; 9:36-53. [PMID: 25621077 PMCID: PMC4303185 DOI: 10.3923/ijcr.2013.36.53] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
As part of the screening program for anticancer agents from natural sources, the sesquiterpene lactone goyazensolide (GZL) was identified as a potent NF-κB inhibitor. The hollow-fiber assay was used to evaluate the anti-tumor efficacy of GZL in vivo. The mechanistic effects of GZL were evaluated in the HT-29 colonic cell line to reveal the pathway through which GZL exerts its effects. NF-κB subunits p65 and p50 were inhibited, and the upstream mediator IκB kinase (IKKβ) was downregulated in a dose-dependent manner. Apoptosis was mediated by caspase-3, and cell cycle arrest was detected in G1-phase. Consequently, 96% of the cell population was in sub G1-phase after treatment with GZL (10 μM).The antitumor effect of GZL was observed at a dose of 12.5 mg/kg. Cell adhesion was affected as a result of NF-κB inhibition. GZL appears to selectively target the transcription factor NF-κB. In summary, GZL sensitizes HT-29 colon cancer cells to apoptosis and cell death in a dose-dependent manner both in vivo and in vitro, through NF-κB inhibition (IC50 = 3.8 μM). Thus, it is a new potent lead compound for further development into a new effective chemotherapeutic agent.
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Affiliation(s)
- Ulyana Muñoz Acuña
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
| | - Qi Shen
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612
| | - Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
| | - Daniel D. Lantvit
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612
| | - Jennifer A Wittwer
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
| | - Steven M. Swanson
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612
| | - Esperanza J. Carcache de Blanco
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210
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Ren Y, Acuña UM, Jiménez F, García R, Mejía M, Chai H, Gallucci JC, Farnsworth NR, Soejarto DD, Carcache de Blanco EJ, Kinghorn AD. Cytotoxic and NF-κB inhibitory sesquiterpene lactones from Piptocoma rufescens. Tetrahedron 2012; 68:2671-2678. [PMID: 22685350 PMCID: PMC3369275 DOI: 10.1016/j.tet.2012.01.061] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Six new (1-6) and eight known germacranolide-type sesquiterpene lactones, along with several known phenylpropanol coumarates and methylated flavonoids, were isolated from the leaves of Piptocoma rufescens, collected in the Dominican Republic. The new compounds were identified by analysis of their spectroscopic data, with the molecular structure of 3 being established by single-crystal X-ray diffraction. The absolute configurations of the sesquiterpene lactones isolated were determined from their CD and NOESY NMR spectra, together with the analysis of Mosher ester reactions. Bioassay screening results showed the majority of the sesquiterpene lactones isolated (1-13) to be highly cytotoxic toward the HT-29 human colon cancer cell line, with the most potent compound being 15-deoxygoyazensolide (10, IC(50), 0.26 µM). In addition, several of the sesquiterpene lactones exhibited NF-κB (p65) inhibitory activity.
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Affiliation(s)
- Yulin Ren
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Ulyana Muñoz Acuña
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Francisco Jiménez
- Jardín Botánico Nacional “Dr. Rafael Ma. Moscoso”, Santo Domingo, Dominican Republic
| | - Ricardo García
- Jardín Botánico Nacional “Dr. Rafael Ma. Moscoso”, Santo Domingo, Dominican Republic
| | - Melciades Mejía
- Jardín Botánico Nacional “Dr. Rafael Ma. Moscoso”, Santo Domingo, Dominican Republic
| | - Heebyung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Judith C. Gallucci
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA
| | - Norman R. Farnsworth
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
| | - Djaja D. Soejarto
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, USA
- Botany Department, Field Museum of Natural History, Chicago, Illinois 60605, USA
| | - Esperanza J. Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
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Fernandes CR, Turatti A, Gouvea DR, Gobbo-Neto L, Diniz A, Ribeiro-Silva A, Lopes NP, Garcia SB. The Protective Role of Lychnophora ericoides Mart. (Brazilian Arnica) in 1,2-Dimethylhydrazine-Induced Experimental Colon Carcinogenesis. Nutr Cancer 2011; 63:593-9. [DOI: 10.1080/01635581.2011.539310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Aline Turatti
- a Department of Pathology, Ribeirão Preto Medical School , University of São Paulo , Ribeirão Preto, Brazil
| | - Dayana Rubio Gouvea
- b Department of Physics and Chemistry, Faculty of Pharmaceutical Sciences , University of São Paulo , Ribeirão Preto, Brazil
| | - Leonardo Gobbo-Neto
- b Department of Physics and Chemistry, Faculty of Pharmaceutical Sciences , University of São Paulo , Ribeirão Preto, Brazil
| | - Andrea Diniz
- b Department of Physics and Chemistry, Faculty of Pharmaceutical Sciences , University of São Paulo , Ribeirão Preto, Brazil
| | - Alfredo Ribeiro-Silva
- a Department of Pathology, Ribeirão Preto Medical School , University of São Paulo , Ribeirão Preto, Brazil
| | - Norberto Peporine Lopes
- b Department of Physics and Chemistry, Faculty of Pharmaceutical Sciences , University of São Paulo , Ribeirão Preto, Brazil
| | - Sérgio Britto Garcia
- a Department of Pathology, Ribeirão Preto Medical School , University of São Paulo , Ribeirão Preto, Brazil
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Reis ÉS, Pinto JEB, Bertolucci SK, Corrêa RM, Paula JR, Andrade ST, Ferri PH. Seasonal Variation in Essential Oils ofLychnophora pinasterMart. JOURNAL OF ESSENTIAL OIL RESEARCH 2010. [DOI: 10.1080/10412905.2010.9700288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Borkosky S, de León S, Juárez G, Sierra M, Bardón A. Molluscicidal Sesquiterpene Lactones from Species of the TribeVernonieae(Compositae). Chem Biodivers 2009; 6:513-9. [DOI: 10.1002/cbdv.200800156] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Alves KCM, Gobbo-Neto L, Lopes NP. Sesquiterpene lactones and flavonoids from Lychnophora reticulata Gardn. (Asteraceae). BIOCHEM SYST ECOL 2008. [DOI: 10.1016/j.bse.2007.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Jabor VAP, dos Santos MD, Bonato PS, Gouvea DR, Lopes NP. A new high-performance liquid chromatography assay for the determination of sesquiterpene lactone 15-deoxygoyazensolide in rat plasma. Anal Chim Acta 2007; 601:212-7. [DOI: 10.1016/j.aca.2007.08.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Revised: 08/20/2007] [Accepted: 08/21/2007] [Indexed: 11/17/2022]
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14
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Vasconcellos MC, Rosa RM, Machado MS, Villela IV, Crotti AEM, Lopes JLC, Pessoa C, de Moraes MO, Lopes NP, Costa-Lotufo LV, Saffi J, Henriques JAP. Genotoxicity of 15-deoxygoyazensolide in bacteria and yeast. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2007; 631:16-25. [PMID: 17499014 DOI: 10.1016/j.mrgentox.2007.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Revised: 04/02/2007] [Accepted: 04/03/2007] [Indexed: 11/26/2022]
Abstract
Sesquiterpene lactones (SLs) present a wide range of pharmacological activities. The aim of our study was to investigate the genotoxicity of 15-deoxygoyazensolide using the Salmonella/microsome assay and the yeast Saccharomyces cerevisiae. We also investigated the nature of induced DNA damage using yeast strains defective in DNA repair pathways, such as nucleotide excision repair (RAD3), error prone repair (RAD6), and recombinational repair (RAD52), and in DNA metabolism, such as topoisomerase mutants. 15-deoxygoyasenzolide was not mutagenic in Salmonella typhimurium, but it was mutagenic in S. cerevisiae. The hypersensitivity of the rad52 mutant suggests that recombinational repair is critical for processing lesions resulting from 15-deoxygoyazensolide-induced DNA damage, whereas excision repair and mutagenic systems does not appear to be primarily involved. Top 1 defective yeast strain was highly sensitive to the cytotoxic activity of 15-deoxygoyazensolide, suggesting a possible involvement of this enzyme in the reversion of the putative complex formation between DNA and this SL, possibly due to intercalation. Moreover, the treatment with this lactone caused dose-dependent glutathione depletion, generating pro-oxidant status which facilitates oxidative DNA damage, particularly DNA breaks repaired by the recombinational system ruled by RAD52 in yeast. Consistent with this finding, the absence of Top1 directly affects chromatin remodeling, allowing repair factors to access oxidative damage, which explains the high sensitivity to top1 strain. In summary, the present study shows that 15-deoxygoyazensolide is mutagenic in yeast due to the possible intercalation effect, in addition to the pro-oxidant status that exacerbates oxidative DNA damage.
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Affiliation(s)
- Marne C Vasconcellos
- Departamento de Fisiologia e Farmacologia, Faculdade de Medicina, Universidade Federal do Ceará, Caixa Postal-3157, 60430-270 Fortaleza, Ceará, Brazil
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de Moraes SL, Tomaz JC, Lopes NP. Liquid chromatography–tandem mass spectrometric method for determination of the anti-inflammatory compound vicenin-2 in the leaves ofL. ericoides Mart. Biomed Chromatogr 2007; 21:925-30. [PMID: 17428019 DOI: 10.1002/bmc.828] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This paper reports a rapid and sensitive method for determination of the anti-inflammatory compound vicenin-2 in L. ericoides Mart. using liquid chromatography-tandem mass spectrometry. Separation of the compound of interest was performed on a VP-ODS(18) (150 x 2 mm, Shimadzu, Japan) column and a pre-column packed with GPV-ODS C(18) (5 x 2 mm, Sigma-Aldrich, USA) with acetonitrile-water (15:85) mobile phase containing 2% acetic acid using isocratic flow at 0.5 mL/min for 2 min. Multiple-reaction monitoring of vicenin-2 was performed using electrospray positive ionization. The linear calibration curves were generated using a concentration range of 5-2500 ng/mL with correlation coefficients >0.99. The values of limit of detection and limit of quantitation were found to be 1 and 5 ng/mL, respectively. The method developed based on LC-ESIMS/MS is advantageous because it permits the rapid and selective detection of vicenin-2. Furthermore, the method can be easily applied to the routine analysis of vicenin-2 in plant extracts using a minimal amount of sample.
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Affiliation(s)
- Solange Leite de Moraes
- Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ave do Café s/n, CEP 14040-903, Monte Alegre, Ribeirão Preto, SP, Brasil
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16
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, Avda. Astrof. F. Sánchez 3, 38206, La Laguna, Tenerife, Canary Islands, Spain.
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