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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] [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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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] [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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Abyar Ghamsari P, Samadizadeh M. 4-Amino modified derivatives of cytidine towards interactions with the methyltransferase enzyme. MAIN GROUP CHEMISTRY 2022. [DOI: 10.3233/mgc-210185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
By the importance of exploring novel compounds for inhibiting the cancerous enzymes activities, this work was performed to recognize advantages of employing 4-amino modified derivatives of cytidine for participating in more efficient interactions with the methyltransferase (MTN) cancerous enzyme target. To this aim, four groups of modified models of cytidine were investigated in addition the original models to recognize the structural features and the corresponding activities. The 4-amino site of cytidine was functionalized by different carbon-based groups in linear and cyclic modes through a bridging peptide linkage. The models were optimized to reach the minimized energy structures by performing quantum chemical calculations and their interactions with the target were analyzed by performing molecular docking simulations. The obtained results of 4-amino modified derivatives of cytidine showed advantages of employing structural modifications to find structures with better molecular orbital based features. Formations of interacting complexes indicated that the additional of carbon-based groups helped to improve possibility of interactions between the substances in both of chemical and physical modes. As a remarkable achievement of this work, the model of cytidine with a phenyl group showed the best advantage of participating in interactions with the MTN target among all twenty five models of the investigated cytidine compounds.
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Affiliation(s)
- Parnia Abyar Ghamsari
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Marjaneh Samadizadeh
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran
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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: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [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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de Paiva PP, Nunes JHB, Nonato FR, Ruiz ALTG, Zafred RRT, Sousa IMO, Okubo MY, Kawano DF, Monteiro PA, Foglio MA, Carvalho JE. In Silico, In Vitro, and In Vivo Antitumor and Anti-Inflammatory Evaluation of a Standardized Alkaloid-Enriched Fraction Obtained from Boehmeria caudata Sw. Aerial Parts. Molecules 2020; 25:molecules25174018. [PMID: 32899132 PMCID: PMC7504783 DOI: 10.3390/molecules25174018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 12/24/2022] Open
Abstract
In the context of the cancer-inflammation relationship and the use of natural products as potential antitumor and anti-inflammatory agents, the alkaloid-enriched fraction of Boehmeriacaudata (BcAEF) aerial parts was evaluated. In vitro antiproliferative studies with human tumor cell lines showed high activity at low concentrations. Further investigation on NCI-H460 cells showed an irreversible effect on cell proliferation, with cell cycle arrest at G2/M phase and programmed cell death induction. Molecular docking studies of four alkaloids identified in BcAEF with colchicine’s binding site on β-tubulin were performed, suggesting (−)-C (15R)-hydroxycryptopleurine as the main inductor of the observed mitotic death. In vivo studies showed that BcAEF was able to reduce Ehrlich tumor volume progression by 30 to 40%. Checking myeloperoxidase activity, BcAEF reduced neutrophils migration towards the tumor. The in vivo anti-inflammatory activity was evaluated by chemically induced edema models. In croton oil-induced ear edema and carrageenan (CG)-induced paw edema models, BcAEF reduced edema around 70 to 80% together with inhibition of activation and/or migration of neutrophils to the inflammatory area. All together the results presented herein show BcAEF as a potent antitumor agent combining antiproliferative and anti-inflammatory properties, which could be further explored in (pre)clinical studies.
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Affiliation(s)
- Paula P. de Paiva
- Institute of Biology, University of Campinas-UNICAMP, Campinas-SP 13083-862, Brazil; (R.R.T.Z.); (P.A.M.); (J.E.C.)
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
- Faculty of Pharmaceutical Sciences, University of Campinas-UNICAMP, Campinas-SP 13083-871, Brazil; (D.F.K.); (M.A.F.)
- Correspondence: ; Tel.: +55-19-3521-7715
| | - Julia H. B. Nunes
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
- Institute of Chemistry, University of Campinas-UNICAMP, Campinas-SP 13083-970, Brazil
| | - Fabiana R. Nonato
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
| | - Ana L. T. G. Ruiz
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
- Faculty of Pharmaceutical Sciences, University of Campinas-UNICAMP, Campinas-SP 13083-871, Brazil; (D.F.K.); (M.A.F.)
| | - Rafael R. T. Zafred
- Institute of Biology, University of Campinas-UNICAMP, Campinas-SP 13083-862, Brazil; (R.R.T.Z.); (P.A.M.); (J.E.C.)
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
| | - Ilza M. O. Sousa
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
- Faculty of Pharmaceutical Sciences, University of Campinas-UNICAMP, Campinas-SP 13083-871, Brazil; (D.F.K.); (M.A.F.)
| | - Márcia Y. Okubo
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
- Piracicaba Dental School, University of Campinas, UNICAMP, Piracicaba-SP 13414-903, Brazil
| | - Daniel F. Kawano
- Faculty of Pharmaceutical Sciences, University of Campinas-UNICAMP, Campinas-SP 13083-871, Brazil; (D.F.K.); (M.A.F.)
| | - Paula A. Monteiro
- Institute of Biology, University of Campinas-UNICAMP, Campinas-SP 13083-862, Brazil; (R.R.T.Z.); (P.A.M.); (J.E.C.)
- Chemical, Biological and Agricultural Pluridisciplinary Research Center (CPQBA), University of Campinas-UNICAMP, Paulínia-SP 13148-218, Brazil; (J.H.B.N.); (F.R.N.); (A.L.T.G.R.); (I.M.O.S.); (M.Y.O.)
| | - Mary A. Foglio
- Faculty of Pharmaceutical Sciences, University of Campinas-UNICAMP, Campinas-SP 13083-871, Brazil; (D.F.K.); (M.A.F.)
| | - João E. Carvalho
- Institute of Biology, University of Campinas-UNICAMP, Campinas-SP 13083-862, Brazil; (R.R.T.Z.); (P.A.M.); (J.E.C.)
- Faculty of Pharmaceutical Sciences, University of Campinas-UNICAMP, Campinas-SP 13083-871, Brazil; (D.F.K.); (M.A.F.)
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