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Thereza Fiori-Duarte A, Bitencourt de Souza Ferreira L, Sanches Ascencio A, Fábio Kawano D. Modulation of Pseudomonas aeruginosa quorum sensing by ajoene through direct competition with small RNAs for binding at the proximal site of Hfq - a structure-based perspective. Gene 2023:147506. [PMID: 37224934 DOI: 10.1016/j.gene.2023.147506] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/16/2023] [Accepted: 05/19/2023] [Indexed: 05/26/2023]
Abstract
Bacteria can communicate to each other via quorum sensing, a cell density-dependent gene regulation system that stimulates the expression of virulence factors in the neighboring cells. Although the interaction of the natural product ajoene with the Hfq protein has been associated with the disruption of the quorum sensing system in Pseudomonas aeruginosa, there is no information concerning the corresponding ligand-target interaction process. Herein we observed a strong correlation (p < 0.00001) between the estimated affinities for the binding of 23 ajoene analogues at the proximal site of the Hfq protein of P. aeruginosa and their corresponding IC50 values, which reflect the reduction in the transcription of a virulence factor after quorum sensing inhibition. In this concern, our analyses reinforces previous propositions suggesting that ajoene could target the Hfq protein and affects its interaction with RNAs. Based on docking simulations, we tried to elucidate the binding mode of ajoene into the proximal Hfq site and the also to established the minimum set of groups that would be necessary for a good interaction at this site, which includes a single hydrogen bond acceptor feature surrounded by groups that interact via π-sulfur (i.e., disulfide sulfurs) and/or π-alkyl/π-π stacking interactions (e.g., vinyl or small aryl/heteroaryl/heterocyclic groups). Because of the widespread role of Hfq as a matchmaker between messenger and small regulatory RNAs in Gram-negatives, we believe the discussion here provided for P. aeruginosa could be extrapolated for Gram-negatives in general, while the interaction of ajoene over the Hfq protein of Gram-positives would still remain more controversial.
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Affiliation(s)
- Ana Thereza Fiori-Duarte
- Group on the Research & Development of Bioactive Compounds (GR&DBC), Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Cândido Portinari 200, 13083-871 Campinas-SP, Brazil
| | - Luciana Bitencourt de Souza Ferreira
- Group on the Research & Development of Bioactive Compounds (GR&DBC), Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Cândido Portinari 200, 13083-871 Campinas-SP, Brazil
| | - Amanda Sanches Ascencio
- Group on the Research & Development of Bioactive Compounds (GR&DBC), Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Cândido Portinari 200, 13083-871 Campinas-SP, Brazil
| | - Daniel Fábio Kawano
- Group on the Research & Development of Bioactive Compounds (GR&DBC), Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Cândido Portinari 200, 13083-871 Campinas-SP, Brazil.
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de Oliveira Neto XA, Barssotti L, Fiori-Duarte AT, Barbosa HCDL, Kawano DF. Entering the sugar rush era: revisiting the antihyperglycemic activities of biguanides after a century of metformin discovery. Curr Med Chem 2022; 30:2542-2561. [PMID: 35996245 DOI: 10.2174/0929867329666220820151959] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/25/2022] [Accepted: 05/16/2022] [Indexed: 11/22/2022]
Abstract
The development of clinically viable metformin analogs is a challenge largely to be overcome. Despite being an extremely efficient drug for the treatment of type 2 diabetes mellitus, multiple studies were conducted seeking to improve its hypoglycemic activity or to ameliorate aspects such as the low oral absorption and the incidence of gastrointestinal side effects. Furthermore, efforts have been made to attribute new activities, or even to expand the pre-existing ones, that could enhance its effects in the diabetes, such as pancreas-protective, antioxidant, and anti-inflammatory activities. In this manuscript, we describe the analogs of metformin developed in the last three decades, highlighting the lack of computationally based rational approaches to guide their development. We also discuss this is probably a consequence of how unclear the mechanism of action of the parent drug is and highlight the recent advances towards establishment of the main molecular target(s) for metformin. We also explored the binding of metformin, buformin and phenformin to the mitochondrial respiratory chain complex I through molecular docking analyses and reviewed the prospects of applying computational tools to improve the success in the development of such analogs. Therefore, it becomes evident the wide range of molecular targets, as well as the multiple activities displayed by metformin, make this drug a promising prototype for the development of novel entities, particularly for the treatment of type 2 diabetes mellitus.
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Affiliation(s)
- Xisto Antonio de Oliveira Neto
- Faculty of Pharmaceutical Sciences, University of Campinas - Campinas-SP, Brazil.,Institute of Chemistry, University of Campinas - Campinas-SP, Brazil
| | - Leticia Barssotti
- Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas-UNICAMP, 13083-864 Campinas-SP, Brazil
| | - Ana Thereza Fiori-Duarte
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, 13083-871 Campinas-SP, Brazil.,Institute of Chemistry, University of Campinas - UNICAMP, 13083-970 Campinas-SP, Brazil
| | - Helena Cristina de Lima Barbosa
- Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas-UNICAMP, 13083-864 Campinas-SP, Brazil
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, 13083-871 Campinas-SP, Brazil.,Institute of Chemistry, University of Campinas - UNICAMP, 13083-970 Campinas-SP, Brazil
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Schneider Alves AC, Cardoso RS, de Oliveira Neto XA, Kawano DF. Uncovering the Potential of Lipid Drugs: A Focus on Transient Membrane Microdomain-Targeted Lipid Therapeutics. Mini Rev Med Chem 2022; 22:2318-2331. [PMID: 35264091 DOI: 10.2174/1389557522666220309162203] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/27/2021] [Accepted: 01/27/2022] [Indexed: 11/22/2022]
Abstract
Membrane lipids are generally viewed as inert physical barriers, but many vital cellular processes greatly rely on the interaction with these structures, as expressed by the membrane hypothesis that explain the genesis of schizophrenia, Alzheimer's and autoimmune diseases, chronic fatigue or cancer, among others. The concept that the cell membrane displays transient membrane microdomains with distinct lipid composition provide the basis for the development of selective lipid-targeted therapies, the membrane-lipid therapies (MLTs). In this concern, medicinal chemists may design therapeutically valuable compounds 1) with a higher affinity for the lipids in these microdomains to restore the normal physiological conditions, 2) that can directly or 3) indirectly (via enzyme inhibition/activation) replace damaged lipids or restore the regular lipid levels in the whole membrane or microdomain, 4) that alter the expression of genes related to lipid genesis/metabolism or 5) that modulate the pathways related to the membrane binding affinity of lipid-anchored proteins. In this context, this mini-review aims to explore the structural diversity and clinical applications of some of the main membrane and microdomain-targeted lipid drugs.
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Affiliation(s)
- Anna Carolina Schneider Alves
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP 200 Cândido Portinari Street, Campinas, SP 13083871. Brazil
| | - Raquel Soares Cardoso
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP. 200 Cândido Portinari Street, Campinas, SP 13083871. Brazil
| | - Xisto Antonio de Oliveira Neto
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP. 200 Cândido Portinari Street, Campinas, SP 13083871. Brazil
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP. 200 Cândido Portinari Street, Campinas, SP 13083871. Brazil
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Biegański P, Godel M, Riganti C, Kawano DF, Kopecka J, Kowalski K. Click ferrocenyl-erlotinib conjugates active against erlotinib-resistant non-small cell lung cancer cells in vitro. Bioorg Chem 2021; 119:105514. [PMID: 34864281 DOI: 10.1016/j.bioorg.2021.105514] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/21/2021] [Indexed: 01/22/2023]
Abstract
Thanks to development of erlotinib and other target therapy drugs the lung cancer treatment have improved a lot in recent years. However, erlotinib-resistant lung cancer remains an unsolved clinical problem which demands for new therapeutics to be developed. Herein we report the synthesis of a library of 1,4- and 1,5-triazole ferrocenyl derivatives of erlotinib together with their anticancer activity studies against erlotinib-sensitive A549 and H1395 as well as erlotinib-resistant H1650 and H1975 cells. Studies showed that extend of anticancer activity is mainly related to the length of the spacer between the triazole and the ferrocenyl entity. Among the series of investigated compounds two isomers commonly bearing C(O)CH2CH2 spacer have shown superior to erlotinib activity against erlotinib-resistant H1650 and H1975 cells whereas compound with short methylene spacer devoid of any activity. In-depth biological studies for the most active compound showed differences in its mechanism of action in compare to erlotinib. The latter is known EGFR inhibitor whereas their ferrocenyl congener exerts anticancer activity mainly as ROS-inducer which activates mitochondrial pathway of apoptosis in cancer cells. However, docking studies suggested that the most active compound can also binds to the active site of EGFR TK in a similar way as erlotinib.
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Affiliation(s)
- Przemysław Biegański
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
| | - Martina Godel
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Turin, Italy.
| | - Chiara Riganti
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Turin, Italy.
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, 200 Cândido Portinari Street, Campinas, SP 13083-871, Brazil.
| | - Joanna Kopecka
- Department of Oncology, University of Torino, via Santena 5/bis, 10126 Turin, Italy.
| | - Konrad Kowalski
- Department of Organic Chemistry, Faculty of Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland.
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Nunes PSG, da Silva G, Nascimento S, Mantoani SP, de Andrade P, Bernardes ES, Kawano DF, Leopoldino AM, Carvalho I. Synthesis, biological evaluation and molecular docking studies of novel 1,2,3-triazole-quinazolines as antiproliferative agents displaying ERK inhibitory activity. Bioorg Chem 2021; 113:104982. [PMID: 34020277 DOI: 10.1016/j.bioorg.2021.104982] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/23/2021] [Accepted: 05/05/2021] [Indexed: 12/24/2022]
Abstract
ERK1/2 inhibitors have attracted special attention concerning the ability of circumventing cases of innate or log-term acquired resistance to RAF and MEK kinase inhibitors. Based on the 4-aminoquinazoline pharmacophore of kinases, herein we describe the synthesis of 4-aminoquinazoline derivatives bearing a 1,2,3-triazole stable core to bridge different aromatic and heterocyclic rings using copper-catalysed azide-alkyne cycloaddition reaction (CuAAC) as a Click Chemistry strategy. The initial screening of twelve derivatives in tumoral cells (CAL-27, HN13, HGC-27, and BT-20) revealed that the most active in BT-20 cells (25a, IC50 24.6 μM and a SI of 3.25) contains a more polar side chain (sulfone). Furthermore, compound 25a promoted a significant release of lactate dehydrogenase (LDH), suggesting the induction of cell death by necrosis. In addition, this compound induced G0/G1 stalling in BT-20 cells, which was accompanied by a decrease in the S phase. Western blot analysis of the levels of p-STAT3, p-ERK, PARP, p53 and cleaved caspase-3 revealed p-ERK1/2 and p-STA3 were drastically decreased in BT-20 cells under 25a incubation, suggesting the involvement of these two kinases in the mechanisms underlying 25a-induced cell cycle arrest, besides loss of proliferation and viability of the breast cancer cell. Molecular docking simulations using the ERK-ulixertinib crystallographic complex showed compound 25a could potentially compete with ATP for binding to ERK in a slightly higher affinity than the reference ERK1/2 inhibitor. Further in silico analyses showed comparable toxicity and pharmacokinetic profiles for compound 25a in relation to ulixertinib.
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Affiliation(s)
| | - Gabriel da Silva
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Sofia Nascimento
- Radiopharmacy Center, Nuclear and Energy Research Institute (IPEN/CNEN-SP), São Paulo, São Paulo, Brazil
| | | | - Peterson de Andrade
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Emerson Soares Bernardes
- Radiopharmacy Center, Nuclear and Energy Research Institute (IPEN/CNEN-SP), São Paulo, São Paulo, Brazil
| | - Daniel Fábio Kawano
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Andreia Machado Leopoldino
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ivone Carvalho
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Fiori-Duarte AT, Rodrigues RP, Kitagawa RR, Kawano DF. Insights into the Design of Inhibitors of the Urease Enzyme - A Major Target for the Treatment of Helicobacter pylori Infections. Curr Med Chem 2020; 27:3967-3982. [PMID: 30827224 DOI: 10.2174/0929867326666190301143549] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 09/18/2018] [Revised: 02/01/2019] [Accepted: 02/19/2019] [Indexed: 12/12/2022]
Abstract
Expressed by a variety of plants, fungi and bacteria, the urease enzyme is directly associated with the virulence factor of many bacteria, including Helicobacter pylori, a gram-negative bacterium related to several gastrointestinal diseases and responsible for one of the most frequent bacterial infections throughout the world. The Helicobacter pylori Urease (HPU) is a nickel-dependent metalloenzyme expressed in response to the environmental stress caused by the acidic pH of the stomach. The enzyme promotes the increase of gastric pH through acid neutralization by the products of urea hydrolysis, then critically contributing to the colonization and pathogenesis of the microorganism. At the same time, standard treatments for Helicobacter pylori infections have limitations such as the increasing bacterial resistance to the antibiotics used in the clinical practice. As a strategy for the development of novel treatments, urease inhibitors have proved to be promising, with a wide range of chemical compounds, including natural, synthetic and semisynthetic products to be researched and potentially developed as new drugs. In this context, this review highlights the advances in the field of HPU inhibition, presenting and discussing the basis for the research of new molecules aiming at the identification of more efficient therapeutic entities.
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Affiliation(s)
- Ana Thereza Fiori-Duarte
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Candido Portinari 200, 13083-871 Campinas, SP, Brazil
| | - Ricardo Pereira Rodrigues
- Department of Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espírito Santo - UFES, Av. Marechal Campos 1468, 29047-105 Vitoria, ES, Brazil
| | - Rodrigo Rezende Kitagawa
- Department of Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espírito Santo - UFES, Av. Marechal Campos 1468, 29047-105 Vitoria, ES, Brazil
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Candido Portinari 200, 13083-871 Campinas, SP, Brazil.,Institute of Chemistry, University of Campinas - UNICAMP, Rua Josué de Castro s/n, 13083-970 Campinas, SP, Brazil
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Rodrigues RP, Ardisson JS, Ribeiro Gonçalves RDC, Oliveira TB, Barreto da Silva V, Kawano DF, Kitagawa RR. Search for Potential Inducible Nitric Oxide Synthase Inhibitors with Favorable ADMET Profiles for the Therapy of Helicobacter pylori Infections. Curr Top Med Chem 2020; 19:2795-2804. [DOI: 10.2174/1568026619666191112105650] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/04/2019] [Accepted: 10/04/2019] [Indexed: 11/22/2022]
Abstract
Background:
Helicobacter pylori is a gram-negative bacterium related to chronic gastritis, peptic
ulcer and gastric carcinoma. During its infection process, promotes excessive inflammatory response, increasing
the release of reactive species and inducing the production of pro-inflammatory mediators. Inducible Nitric
Oxide Synthase (iNOS) plays a crucial role in the gastric carcinogenesis process and a key mediator of inflammation
and host defense systems, which is expressed in macrophages induced by inflammatory stimuli. In
chronic diseases such as Helicobacter pylori infections, the overproduction of NO due to the prolonged induction
of iNOS is of major concern.
Objective:
In this sense, the search for potential iNOS inhibitors is a valuable strategy in the overall process
of Helicobacter pylori pathogeny.
Method:
In silico techniques were applied in the search of interesting compounds against Inducible Nitric
Oxide Synthase enzyme in a chemical space of natural products and derivatives from the Analyticon Discovery
databases.
Results:
The five compounds with the best iNOS inhibition profile were selected for activity and toxicity predictions.
Compound 9 (CAS 88198-99-6) displayed significant potential for iNOS inhibition, forming hydrogen
bonds with residues from the active site and an ionic interaction with heme. This compound also displayed
good bioavailability and absence of toxicity/or from its probable metabolites.
Conclusion:
The top-ranked compounds from the virtual screening workflow show promising results regarding
the iNOS inhibition profile. The results evidenced the importance of the ionic bonding during docking selection,
playing a crucial role in binding and positioning during ligand-target selection for iNOS.
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Affiliation(s)
- Ricardo Pereira Rodrigues
- Graduate Program in Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espirito Santo - UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil
| | - Juliana Santa Ardisson
- Graduate Program in Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espirito Santo - UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil
| | - Rita de Cássia Ribeiro Gonçalves
- Graduate Program in Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espirito Santo - UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil
| | - Tiago Branquinho Oliveira
- Department of Pharmacy, Federal University of Sergipe (UFS-SE), Av. Marechal Rondon s/n, Jd. Rosa Elze, Sao Cristovao 49100-000, SE, Brazil
| | - Vinicius Barreto da Silva
- Department of Biomedicine and Pharmacy, Pontifical Catholic University of Goiás, 74605-140 Goiania-GO, Brazil
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas, Rua Candido Portinari 200, 13083-871 Campinas- SP, Brazil
| | - Rodrigo Rezende Kitagawa
- Graduate Program in Pharmaceutical Sciences, Health Sciences Center - CCS, Federal University of Espirito Santo - UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil
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Soares FGN, Göethel G, Kagami LP, das Neves GM, Sauer E, Birriel E, Varela J, Gonçalves IL, Von Poser G, González M, Kawano DF, Paula FR, de Melo EB, Garcia SC, Cerecetto H, Eifler-Lima VL. Novel coumarins active against Trypanosoma cruzi and toxicity assessment using the animal model Caenorhabditis elegans. BMC Pharmacol Toxicol 2019; 20:76. [PMID: 31852548 PMCID: PMC6921407 DOI: 10.1186/s40360-019-0357-z] [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] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Chagas disease (CD) is a tropical parasitic disease. Although the number of people infected is very high, the only drugs available to treat CD, nifurtimox (Nfx) and benznidazole, are highly toxic, particularly in the chronic stage of the disease. Coumarins are a large class of compounds that display a wide range of interesting biological properties, such as antiparasitic. Hence, the aim of this work is to find a good antitrypanosomal drug with less toxicity. The use of simple organism models has become increasingly attractive for planning and simplifying efficient drug discovery. Within these models, Caenorhabditis elegans has emerged as a convenient and versatile tool with significant advantages for the toxicological potential identification for new compounds. METHODS Trypanocidal activity: Forty-two 4-methylamino-coumarins were assayed against the epimastigote form of Trypanosoma cruzi (Tulahuen 2 strain) by inhibitory concentration 50% (IC50). Toxicity assays: Lethal dose 50% (LD50) and Body Area were determined by Caenorhabditis elegans N2 strain (wild type) after acute exposure. Structure-activity relationship: A classificatory model was built using 3D descriptors. RESULTS Two of these coumarins demonstrated near equipotency to Nifurtimox (IC50 = 5.0 ± 1 μM), with values of: 11 h (LaSOM 266), (IC50 = 6.4 ± 1 μM) and 11 g (LaSOM 231), (IC50 = 8.2 ± 2.3 μM). In C. elegans it was possible to observe that Nfx showed greater toxicity in both the LD50 assay and the evaluation of the development of worms. It is possible to observe that the efficacy between Nfx and the synthesized compounds (11 h and 11 g) are similar. On the other hand, the toxicity of Nfx is approximately three times higher than that of the compounds. Results from the QSAR-3D study indicate that the volume and hydrophobicity of the substituents have a significant impact on the trypanocidal activities for derivatives that cause more than 50% of inhibition. These results show that the C. elegans model is efficient for screening potentially toxic compounds. CONCLUSION Two coumarins (11 h and 11 g) showed activity against T. cruzi epimastigote similar to Nifurtimox, however with lower toxicity in both LD50 and development of C. elegans assays. These two compounds may be a feasible starting point for the development of new trypanocidal drugs.
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Affiliation(s)
- Fabiana Gomes Nascimento Soares
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gabriela Göethel
- Laboratório Toxicologia/LATOX, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Luciano Porto Kagami
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gustavo Machado das Neves
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Elisa Sauer
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Estefania Birriel
- Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Javier Varela
- Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Itamar Luís Gonçalves
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Gilsane Von Poser
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mercedes González
- Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Daniel Fábio Kawano
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas, Campinas, SP, Brazil
- Departamento de Química Orgânica, Instituto de Química, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Fávero Reisdorfer Paula
- Universidade Estadual do Oeste do Paraná, Centro de Ciências Médicas e Farmacêuticas, Cascavel, PR, Brazil
| | - Eduardo Borges de Melo
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil
| | - Solange Cristina Garcia
- Laboratório Toxicologia/LATOX, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Hugo Cerecetto
- Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Vera Lucia Eifler-Lima
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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9
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Parreira RLT, Costa ES, Heleno VCG, Magalhães LG, Souza JM, Pauletti PM, Cunha WR, Januário AH, Símaro GV, Bastos JK, Laurentiz RS, Kar T, Caramori GF, Kawano DF, Andrade E Silva ML. Evaluation of Lignans from Piper cubeba against Schistosoma mansoni Adult Worms: A Combined Experimental and Theoretical Study. Chem Biodivers 2018; 16:e1800305. [PMID: 30335227 DOI: 10.1002/cbdv.201800305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 06/26/2018] [Accepted: 10/17/2018] [Indexed: 01/01/2023]
Abstract
Six dibenzylbutyrolactonic lignans ((-)-hinokinin (1), (-)-cubebin (2), (-)-yatein (3), (-)-5-methoxyyatein (4), dihydrocubebin (5) and dihydroclusin (6)) were isolated from Piper cubeba seed extract and evaluated against Schistosoma mansoni. All lignans, except 5, were able to separate the adult worm pairs and reduce the egg numbers during 24 h of incubation. Lignans 1, 3 and 4 (containing a lactone ring) were the most efficient concerning antiparasitary activity. Comparing structures 3 and 4, the presence of the methoxy group at position 5 appears to be important for this activity. Considering 1 and 3, it is possible to see that the substitution pattern change (methylenedioxy or methoxy groups) in positions 3' and 4' alter the biological response, with 1 being the second most active compound. Computational calculations suggest that the activity of compound 4 can be correlated with the largest lipophilicity value.
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Affiliation(s)
- Renato L T Parreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Eveline S Costa
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Vladimir C G Heleno
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Lizandra G Magalhães
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Julia M Souza
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Patrícia M Pauletti
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Wilson R Cunha
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Ana H Januário
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Guilherme V Símaro
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
| | - Jairo K Bastos
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café s/n, 14040-903 Ribeirão Preto, São Paulo, Brazil
| | - Rosangela S Laurentiz
- Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista Júlio de Mesquita Filho, Avenida Brasil 56, 15385-000 Ilha Solteira, São Paulo, Brazil
| | - Tapas Kar
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah, 84322-0300, USA
| | - Giovanni F Caramori
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, 88040-900, CP 476 Florianópolis, Santa Catarina, Brazil
| | - Daniel Fábio Kawano
- Universidade de Campinas, Faculdade de Ciências Farmacêuticas, Rua Cândido Portinari 200, 13083-871 Campinas, São Paulo, Brazil
| | - Márcio L Andrade E Silva
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Av. Dr. Armando Salles Oliveira 201, 14404-600 Franca, São Paulo, Brazil
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Borges A, Casoti R, E Silva MLA, da Cunha NL, da Rocha Pissurno AP, Kawano DF, da Silva de Laurentiz R. COX Inhibition Profiles and Molecular Docking Studies of the Lignan Hinokinin and Some Synthetic Derivatives. Mol Inform 2018; 37:e1800037. [PMID: 30066986 DOI: 10.1002/minf.201800037] [Citation(s) in RCA: 11] [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: 03/29/2018] [Accepted: 07/03/2018] [Indexed: 11/08/2022]
Abstract
Encouraged by the anti-inflammatory activity of hinokinin in vivo, which is also observed for the analogues dinitrohinokinin and diidrocubebin, herein we used in vitro and in silico methods to assess their selectivity profiles and predict their binding modes with Cyclooxygenases (COX-1 and 2). The in vitro assays demonstrated dinitrohinokinin is about 13 times more selective for COX-2 than for COX-1, a similar profile observed for the drugs celecoxib (selective index ≈9) and meloxicam (selective index ≈11). Predictions of the binding modes suggested dinitrohinokinin interacts with COX-2 very similarly to rofecoxib, exploring residues at the hydrophilic pocket of the enzyme that accessible to ligands only in this isoform. This lignan also interacts with COX-1 in a similar mode to meloxicam, blocking the access of the substrate to the catalytic cleft. Therefore, dinitrohinokinin is a promising lead for the design of selective COX-2 inhibitors.
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Affiliation(s)
- Alexandre Borges
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Cândido Portinari 200, 13083-871, Campinas-SP, Brazil
| | - Rosana Casoti
- Laboratory of Pharmacognosy, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo - USP, Avenida do Café s/n, 14040-020, Ribeirão Preto-SP, Brazil
| | - Marcio Luis Andrade E Silva
- Nucleus of Research in Exact and Technological Sciences, University of Franca - UNIFRAN, Avenida Dr. Armando de Sáles Oliveira 201, 14404-600, Franca-SP, Brazil
| | - Nayane Larissa da Cunha
- Nucleus of Research in Exact and Technological Sciences, University of Franca - UNIFRAN, Avenida Dr. Armando de Sáles Oliveira 201, 14404-600, Franca-SP, Brazil
| | - Ana Paula da Rocha Pissurno
- Laboratory of Natural Products and Organic Synthesis of the Faculty of Engineering, São Paulo State University "Julio de Mesquita Filho" - UNESP, Avenida Brasil 56, 15385-000, Ilha Solteira-SP, Brazil
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas - UNICAMP, Rua Cândido Portinari 200, 13083-871, Campinas-SP, Brazil
| | - Rosangela da Silva de Laurentiz
- Laboratory of Natural Products and Organic Synthesis of the Faculty of Engineering, São Paulo State University "Julio de Mesquita Filho" - UNESP, Avenida Brasil 56, 15385-000, Ilha Solteira-SP, Brazil
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11
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Gonçalves IL, Rockenbach L, das Neves GM, Göethel G, Nascimento F, Porto Kagami L, Figueiró F, Oliveira de Azambuja G, de Fraga Dias A, Amaro A, de Souza LM, da Rocha Pitta I, Avila DS, Kawano DF, Garcia SC, Battastini AMO, Eifler-Lima VL. Effect of N-1 arylation of monastrol on kinesin Eg5 inhibition in glioma cell lines. Medchemcomm 2018; 9:995-1010. [PMID: 30108989 DOI: 10.1039/c8md00095f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 04/14/2018] [Indexed: 01/08/2023]
Abstract
An original and focused library of two sets of dihydropyrimidin-2-thiones (DHPMs) substituted with N-1 aryl groups derived from monastrol was designed and synthesized in order to discover a more effective Eg5 ligand than the template. Based on molecular docking studies, four ligands were selected to perform pharmacological investigations against two glioma cell lines. The results led to the discovery of two original compounds, called 20h and 20e, with an anti-proliferative effects, achieving IC50 values of about half that of the IC50 of monastrol in both cell lines. As with monastrol, flow cytometry analyses showed that the 20e and 20h compounds induced cell cycle arrest in the G2/M phase, and immunocytochemistry essays revealed the formation of monopolar spindles due to Eg5 inhibition without any toxicity to Caenorhabditis elegans.
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Affiliation(s)
- Itamar Luís Gonçalves
- Laboratório de Síntese Orgânica Medicinal/LaSOM , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Avenida Ipiranga , 2752 , Porto Alegre/RS , Brazil .
| | - Liliana Rockenbach
- Laboratório de Síntese Orgânica Medicinal/LaSOM , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Avenida Ipiranga , 2752 , Porto Alegre/RS , Brazil .
| | - Gustavo Machado das Neves
- Laboratório de Síntese Orgânica Medicinal/LaSOM , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Avenida Ipiranga , 2752 , Porto Alegre/RS , Brazil .
| | - Gabriela Göethel
- Laboratório de Toxicologia - LATOX , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Porto Alegre/RS , Brazil
| | - Fabiana Nascimento
- Laboratório de Síntese Orgânica Medicinal/LaSOM , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Avenida Ipiranga , 2752 , Porto Alegre/RS , Brazil .
| | - Luciano Porto Kagami
- Laboratório de Síntese Orgânica Medicinal/LaSOM , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Avenida Ipiranga , 2752 , Porto Alegre/RS , Brazil .
| | - Fabrício Figueiró
- Departamento de Bioquímica , ICBS , Universidade Federal do Rio Grande do Sul , Porto Alegre/RS , Brazil .
| | - Gabriel Oliveira de Azambuja
- Laboratório de Síntese Orgânica Medicinal/LaSOM , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Avenida Ipiranga , 2752 , Porto Alegre/RS , Brazil .
| | - Amanda de Fraga Dias
- Departamento de Bioquímica , ICBS , Universidade Federal do Rio Grande do Sul , Porto Alegre/RS , Brazil .
| | - Andressa Amaro
- Departamento de Bioquímica , ICBS , Universidade Federal do Rio Grande do Sul , Porto Alegre/RS , Brazil .
| | - Lauro Mera de Souza
- Instituto de Pesquisa Pelé Pequeno Príncipe , Faculdades Pequeno Príncipe , Curitiba-PR , Brazil
| | - Ivan da Rocha Pitta
- Núcleo de Pesquisa em Inovação Terapêutica , Universidade Federal de Pernambuco , Recife/PE , Brazil
| | - Daiana Silva Avila
- Grupo de Pesquisa em Bioquímica e Toxicologia em Caenorhabditis elegans (GBToxCE) , Universidade Federal do Pampa-UNIPAMPA , Uruguaiana , RS , Brazil
| | - Daniel Fábio Kawano
- Faculdade de Ciências Farmacêuticas , Universidade Estadual de Campinas , Campinas-SP , Brazil
| | - Solange Cristina Garcia
- Laboratório de Toxicologia - LATOX , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Porto Alegre/RS , Brazil
| | | | - Vera Lucia Eifler-Lima
- Laboratório de Síntese Orgânica Medicinal/LaSOM , Faculdade de Farmácia , Universidade Federal do Rio Grande do Sul , Avenida Ipiranga , 2752 , Porto Alegre/RS , Brazil .
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Kagami LP, das Neves GM, da Silva AWS, Caceres RA, Kawano DF, Eifler-Lima VL. LiGRO: a graphical user interface for protein-ligand molecular dynamics. J Mol Model 2017; 23:304. [PMID: 28980073 DOI: 10.1007/s00894-017-3475-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 07/14/2017] [Accepted: 09/17/2017] [Indexed: 11/30/2022]
Abstract
To speed up the drug-discovery process, molecular dynamics (MD) calculations performed in GROMACS can be coupled to docking simulations for the post-screening analyses of large compound libraries. This requires generating the topology of the ligands in different software, some basic knowledge of Linux command lines, and a certain familiarity in handling the output files. LiGRO-the python-based graphical interface introduced here-was designed to overcome these protein-ligand parameterization challenges by allowing the graphical (non command line-based) control of GROMACS (MD and analysis), ACPYPE (ligand topology builder) and PLIP (protein-binder interactions monitor)-programs that can be used together to fully perform and analyze the outputs of complex MD simulations (including energy minimization and NVT/NPT equilibration). By allowing the calculation of linear interaction energies in a simple and quick fashion, LiGRO can be used in the drug-discovery pipeline to select compounds with a better protein-binding interaction profile. The design of LiGRO allows researchers to freely download and modify the software, with the source code being available under the terms of a GPLv3 license from http://www.ufrgs.br/lasomfarmacia/ligro/ .
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Affiliation(s)
- Luciano Porto Kagami
- Laboratory of Medicinal Organic Synthesis (LaSOM), Faculty of Pharmacy, Federal University of Rio Grande do Sul, Ipiranga Avenue, n° 2752, Porto Alegre, RS, 90610-000, Brazil.
| | - Gustavo Machado das Neves
- Laboratory of Medicinal Organic Synthesis (LaSOM), Faculty of Pharmacy, Federal University of Rio Grande do Sul, Ipiranga Avenue, n° 2752, Porto Alegre, RS, 90610-000, Brazil
| | - Alan Wilter Sousa da Silva
- Universal Protein Resource (UniProt), EMBL-EBI, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SD, UK
| | - Rafael Andrade Caceres
- Pharmacosciences Department of Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil.,Health Sciences Postgraduate Program of Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite Street, n° 245, 2nd Floor, room 200C, Porto Alegre City, Rio Grande do Sul State, Brazil
| | - Daniel Fábio Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), Cândido Portinari Street, n° 200, Campinas, SP, 13083-871, Brazil.,Institute of Chemistry, University of Campinas (UNICAMP), Josué de Castro Street, Campinas, SP, 13083-970, Brazil
| | - Vera Lucia Eifler-Lima
- Laboratory of Medicinal Organic Synthesis (LaSOM), Faculty of Pharmacy, Federal University of Rio Grande do Sul, Ipiranga Avenue, n° 2752, Porto Alegre, RS, 90610-000, Brazil.
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13
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Kagami LP, das Neves GM, Rodrigues RP, da Silva VB, Eifler-Lima VL, Kawano DF. Identification of a novel putative inhibitor of the Plasmodium falciparum purine nucleoside phosphorylase: exploring the purine salvage pathway to design new antimalarial drugs. Mol Divers 2017; 21:677-695. [PMID: 28523625 DOI: 10.1007/s11030-017-9745-8] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 04/16/2017] [Indexed: 11/26/2022]
Abstract
Malaria, a tropical parasitic disease caused by Plasmodium spp., continues to place a heavy social burden, with almost 200 million cases and more than 580,000 deaths per year. Plasmodium falciparum purine nucleoside phosphorylase (PfPNP) can be targeted for antimalarial drug design since its inhibition kills malaria parasites both in vitro and in vivo. Although the currently known inhibitors of PfPNP, immucillins, are orally available and of low toxicity to animals and humans, to the best of our knowledge, none of these compounds has entered clinical trials for the treatment of malaria. Using a pharmacophore-based virtual screening coupled to a consensual molecular docking approach, we identified 59 potential PfPNP inhibitors that are predicted to be orally absorbed in a Caco-2 cell model. Although most of these compounds are predicted to have high plasma protein binding levels, poor water solubility (except for compound 25) and CYP3A4 metabolic stability (except for 4, 7 and 8), four structures (4, 7, 8 and 25) remain as potential leads because of their plausible interaction with a specific hydrophobic pocket of PfPNP, which would confer them higher selectivity for PfPNP over human PNP. Additionally, both predicted Gibbs free energies for binding and molecular dynamics suggest that compound 4 may form a more stable complex with PfPNP than 5[Formula: see text]-methylthio-immucillin-H, a potent and selective inhibitor of PfPNP.
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Affiliation(s)
- Luciano Porto Kagami
- Laboratório de Síntese Orgânica Medicinal - LaSOM, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga 2752, Porto Alegre, RS, 90610-000, Brazil
| | - Gustavo Machado das Neves
- Laboratório de Síntese Orgânica Medicinal - LaSOM, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga 2752, Porto Alegre, RS, 90610-000, Brazil
| | - Ricardo Pereira Rodrigues
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café s/n, Ribeirão Preto, SP, 14040-903, Brazil
| | - Vinicius Barreto da Silva
- Escola de Ciências Médicas, Farmacêuticas e Biomédicas, Pontifícia Universidade Católica de Goiás, Avenida Universitária no 1440, Goiânia, GO, 74605-010, Brazil
| | - Vera Lucia Eifler-Lima
- Laboratório de Síntese Orgânica Medicinal - LaSOM, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga 2752, Porto Alegre, RS, 90610-000, Brazil
| | - Daniel Fábio Kawano
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas, Rua Cândido Portinari 200, Campinas, SP, 13083-871, Brazil.
- Departamento de Química Orgânica, Instituto de Química, Universidade Estadual de Campinas, Rua Josué de Castro s/n, Campinas, SP, 13083-970, Brazil.
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Corbelini PF, Figueiró F, das Neves GM, Andrade S, Kawano DF, Oliveira Battastini AM, Eifler-Lima VL. Insights into Ecto-5'-Nucleotidase as a New Target for Cancer Therapy: A Medicinal Chemistry Study. Curr Med Chem 2015; 22:1776 - 1792. [PMID: 25850771 DOI: 10.2174/0929867322666150408112615] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 03/24/2015] [Accepted: 04/02/2015] [Indexed: 11/22/2022]
Abstract
Ecto-5'-nucleotidase (ecto-5'-NT, 5'-NT, eN, CD73) is a membrane ecto-enzyme that is primarily responsible for the extracellular production of adenosine from AMP. Ecto-5'-NT is over expressed in various types of cancer cells, leading to elevated concentrations of adenosine in the tumor microenvironment. Adenosine has also been found to be important in cancer pathogenesis, showing strong immunosuppressive effects over antitumor T cells and macrophages and promoting neovascularization and cell adherence. These actions support tumor growth and development. It has been suggested that the inhibition of ecto-5'-NT results in lower extracellular concentrations of adenosine within the tumor microenvironment, which would directly affect cancer cells and render malignant cells more susceptible to host defense systems. Such mechanisms are proposed to represent promising new targets for cancer therapy. The aim of this review is to explore the biochemical and structural features of ecto-5'-NT, including a brief analysis of its active site by molecular modeling, as a means of evaluating whether the inhibition of this enzyme does indeed represent a feasible strategy for treating cancer. Known inhibitors and possible prototypes that could be used to target ecto-5'-NT during cancer therapy are also discussed.
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Affiliation(s)
| | | | | | | | | | - Ana Maria Oliveira Battastini
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-anexo, CEP 90035-000, Porto Alegre/RS, Brazil.
| | - Vera Lucia Eifler-Lima
- Laboratório de Síntese Orgânica Medicinal/LaSOM, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga 2752, CEP 90610-000, Porto Alegre/RS, Brazil.
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15
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Pinsetta FR, Kawano DF, de Carvalho MR, de Oliveira JAA, Corrado AP, Hyppolito MÂ, Carvalho I. Synthesis of neamine-based pseudodisaccharides as potential vestibulotoxic agents to treat vertigo in Ménière's disease. Carbohydr Res 2013; 373:97-102. [PMID: 23603190 DOI: 10.1016/j.carres.2013.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Revised: 03/21/2013] [Accepted: 03/22/2013] [Indexed: 11/29/2022]
Abstract
Ménière's disease (MD) is a progressive disease of the inner ear characterized by recurring attacks of disabling vertigo, hearing loss and tinnitus. Patients who do not respond to vestibular sedatives or steroids may require an intratympanic application of aminoglycoside antibiotics, which destroys the vestibular function of the affected ear in order to avoid the debilitating vertigo attacks. Although effective, this procedure causes hearing loss in almost one third of the patients due to the aminoglycosides cochlear toxicity. Here we describe the synthesis of two pseudodisaccharides structurally related to neamime aiming to mimic the aminoglycosides pharmacophore core by replacing their toxic amine by azide and hydroxyl groups. Products 1 and 2 selectively promoted 'in vivo' damage to vestibular tissues without causing hearing loss or cochlear toxicity. Therefore, these pseudodisaccharides stand as promising lead compounds for the development of a safer and more effective therapeutic procedure to manage the symptoms of MD severe dizziness.
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Affiliation(s)
- Flávio Roberto Pinsetta
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brazil
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Kawano DF, Silva VBD, Jorge DMDM, Silva CHTDPD, Carvalho I. Search for a platelet-activating factor receptor in the Trypanosoma cruzi proteome: a potential target for Chagas disease chemotherapy. Mem Inst Oswaldo Cruz 2011; 106:957-67. [DOI: 10.1590/s0074-02762011000800010] [Citation(s) in RCA: 5] [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: 07/08/2011] [Accepted: 11/08/2011] [Indexed: 01/05/2023] Open
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da Silva VB, Kawano DF, Carvalho I, da Conceição EC, de Freitas O, da Silva CHTDP. Psoralen and bergapten: in silico metabolism and toxicophoric analysis of drugs used to treat vitiligo. J Pharm Pharm Sci 2010; 12:378-87. [PMID: 20067712 DOI: 10.18433/j3w01d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PURPOSE To discuss the contribution of psoralen and bergapten metabolites on psoralens toxicity. METHODS Computational chemistry prediction of metabolic reactions and toxicophoric groups based on the expert systems Derek and Meteor. RESULTS a total of 15 metabolites were suggested for both psoralen and bergapten based on phase 1 and 2 biotransformations until the 3rd generation. Five toxicophoric substructures were shared among psoralen, bergapten and their corresponding metabolites; one toxicophoric marker (resorcinol) was only identified in bergapten and its biotransformation products. CONCLUSION Although the toxic effects of psoralens are well known and documented, there is little information concerning the role of their metabolites in this process. We believe this work add to the knowledge of which molecular substructures are relevant to the process of metabolism and toxicity induction, thus guiding the search and development of more effective and less toxic drugs to treat vitiligo.
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Affiliation(s)
- Vinicius Barreto da Silva
- Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, CEP 14040-903, Brazil.
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Campo VL, Kawano DF, Silva DBD, Carvalho I. Carrageenans: Biological properties, chemical modifications and structural analysis – A review. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2009.01.020] [Citation(s) in RCA: 782] [Impact Index Per Article: 52.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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