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Blua F, Monge C, Gastaldi S, Clemente N, Pizzimenti S, Lazzarato L, Senetta R, Vittorio S, Gigliotti CL, Boggio E, Dianzani U, Vistoli G, Altomare AA, Aldini G, Dianzani C, Marini E, Bertinaria M. Discovery of a septin-4 covalent binder with antimetastatic activity in a mouse model of melanoma. Bioorg Chem 2024; 144:107164. [PMID: 38306824 DOI: 10.1016/j.bioorg.2024.107164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/23/2024] [Accepted: 01/28/2024] [Indexed: 02/04/2024]
Abstract
Cancer spreading through metastatic processes is one of the major causes of tumour-related mortality. Metastasis is a complex phenomenon which involves multiple pathways ranging from cell metabolic alterations to changes in the biophysical phenotype of cells and tissues. In the search for new effective anti-metastatic agents, we modulated the chemical structure of the lead compound AA6, in order to find the structural determinants of activity, and to identify the cellular target responsible of the downstream anti-metastatic effects observed. New compounds synthesized were able to inhibit in vitro B16-F10 melanoma cell invasiveness, and one selected compound, CM365, showed in vivo anti-metastatic effects in a lung metastasis mouse model of melanoma. Septin-4 was identified as the most likely molecular target responsible for these effects. This study showed that CM365 is a promising molecule for metastasis prevention, remarkably effective alone or co-administered with drugs normally used in cancer therapy, such as paclitaxel.
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Affiliation(s)
- Federica Blua
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Chiara Monge
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Simone Gastaldi
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Nausicaa Clemente
- Settore Centri di Ricerca e Infrastrutture di Ateneo e Laboratori - Polo di NO, University of Piemonte Orientale, Novara, Italy
| | - Stefania Pizzimenti
- Department of Clinical and Biological Science, University of Turin, Torino, Italy
| | - Loretta Lazzarato
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Rebecca Senetta
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Serena Vittorio
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | | | - Elena Boggio
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Umberto Dianzani
- Department of Health Sciences, University of Piemonte Orientale, Novara, Italy
| | - Giulio Vistoli
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | | | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Chiara Dianzani
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Elisabetta Marini
- Department of Drug Science and Technology, University of Turin, Turin, Italy.
| | - Massimo Bertinaria
- Department of Drug Science and Technology, University of Turin, Turin, Italy
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Gastaldi S, Rocca C, Gianquinto E, Granieri MC, Boscaro V, Blua F, Rolando B, Marini E, Gallicchio M, De Bartolo A, Romeo N, Mazza R, Fedele F, Pagliaro P, Penna C, Spyrakis F, Bertinaria M, Angelone T. Discovery of a novel 1,3,4-oxadiazol-2-one-based NLRP3 inhibitor as a pharmacological agent to mitigate cardiac and metabolic complications in an experimental model of diet-induced metaflammation. Eur J Med Chem 2023; 257:115542. [PMID: 37290185 DOI: 10.1016/j.ejmech.2023.115542] [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: 05/04/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Inspired by the recent advancements in understanding the binding mode of sulfonylurea-based NLRP3 inhibitors to the NLRP3 sensor protein, we developed new NLRP3 inhibitors by replacing the central sulfonylurea moiety with different heterocycles. Computational studies evidenced that some of the designed compounds were able to maintain important interaction within the NACHT domain of the target protein similarly to the most active sulfonylurea-based NLRP3 inhibitors. Among the studied compounds, the 1,3,4-oxadiazol-2-one derivative 5 (INF200) showed the most promising results being able to prevent NLRP3-dependent pyroptosis triggered by LPS/ATP and LPS/MSU by 66.3 ± 6.6% and 61.6 ± 11.5% and to reduce IL-1β release (35.5 ± 8.8% μM) at 10 μM in human macrophages. The selected compound INF200 (20 mg/kg/day) was then tested in an in vivo rat model of high-fat diet (HFD)-induced metaflammation to evaluate its beneficial cardiometabolic effects. INF200 significantly counteracted HFD-dependent "anthropometric" changes, improved glucose and lipid profiles, and attenuated systemic inflammation and biomarkers of cardiac dysfunction (particularly BNP). Hemodynamic evaluation on Langendorff model indicate that INF200 limited myocardial damage-dependent ischemia/reperfusion injury (IRI) by improving post-ischemic systolic recovery and attenuating cardiac contracture, infarct size, and LDH release, thus reversing the exacerbation of obesity-associated damage. Mechanistically, in post-ischemic hearts, IFN200 reduced IRI-dependent NLRP3 activation, inflammation, and oxidative stress. These results highlight the potential of the novel NLRP3 inhibitor, INF200, and its ability to reverse the unfavorable cardio-metabolic dysfunction associated with obesity.
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Affiliation(s)
- Simone Gastaldi
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy
| | - Carmine Rocca
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E.S. (DiBEST), University of Calabria, 87036, Rende, Italy
| | - Eleonora Gianquinto
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy
| | - Maria Concetta Granieri
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E.S. (DiBEST), University of Calabria, 87036, Rende, Italy
| | - Valentina Boscaro
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy
| | - Federica Blua
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy
| | - Barbara Rolando
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy
| | - Elisabetta Marini
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy
| | | | - Anna De Bartolo
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E.S. (DiBEST), University of Calabria, 87036, Rende, Italy
| | - Naomi Romeo
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E.S. (DiBEST), University of Calabria, 87036, Rende, Italy
| | - Rosa Mazza
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E.S. (DiBEST), University of Calabria, 87036, Rende, Italy
| | - Francesco Fedele
- Department of Clinical, Internal, Anesthesiology and Cardiovascular Sciences, Sapienza University of Rome, Viale del Policlinico, 155, 00161, Rome, Italy; National Institute for Cardiovascular Research (INRC), Bologna, Italy
| | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy; National Institute for Cardiovascular Research (INRC), Bologna, Italy
| | - Claudia Penna
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy; National Institute for Cardiovascular Research (INRC), Bologna, Italy.
| | - Francesca Spyrakis
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy.
| | - Massimo Bertinaria
- Department of Drug Science and Technology, University of Turin, 10125, Turin, Italy.
| | - Tommaso Angelone
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E. and E.S. (DiBEST), University of Calabria, 87036, Rende, Italy; National Institute for Cardiovascular Research (INRC), Bologna, Italy
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Gastaldi S, Boscaro V, Gianquinto E, Sandall CF, Giorgis M, Marini E, Blua F, Gallicchio M, Spyrakis F, MacDonald JA, Bertinaria M. Chemical Modulation of the 1-(Piperidin-4-yl)-1,3-dihydro-2 H-benzo[d]imidazole-2-one Scaffold as a Novel NLRP3 Inhibitor. Molecules 2021; 26:molecules26133975. [PMID: 34209843 PMCID: PMC8271538 DOI: 10.3390/molecules26133975] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 06/23/2021] [Accepted: 06/23/2021] [Indexed: 02/06/2023] Open
Abstract
In the search for new chemical scaffolds able to afford NLRP3 inflammasome inhibitors, we used a pharmacophore-hybridization strategy by combining the structure of the acrylic acid derivative INF39 with the 1-(piperidin-4-yl)1,3-dihydro-2H-benzo[d]imidazole-2-one substructure present in HS203873, a recently identified NLRP3 binder. A series of differently modulated benzo[d]imidazole-2-one derivatives were designed and synthesised. The obtained compounds were screened in vitro to test their ability to inhibit NLRP3-dependent pyroptosis and IL-1β release in PMA-differentiated THP-1 cells stimulated with LPS/ATP. The selected compounds were evaluated for their ability to reduce the ATPase activity of human recombinant NLRP3 using a newly developed assay. From this screening, compounds 9, 13 and 18, able to concentration-dependently inhibit IL-1β release in LPS/ATP-stimulated human macrophages, emerged as the most promising NLRP3 inhibitors of the series. Computational simulations were applied for building the first complete model of the NLRP3 inactive state and for identifying possible binding sites available to the tested compounds. The analyses led us to suggest a mechanism of protein–ligand binding that might explain the activity of the compounds.
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Affiliation(s)
- Simone Gastaldi
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Valentina Boscaro
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Eleonora Gianquinto
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Christina F. Sandall
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6, Canada; (C.F.S.); (J.A.M.)
| | - Marta Giorgis
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Elisabetta Marini
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Federica Blua
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Margherita Gallicchio
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Francesca Spyrakis
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
| | - Justin A. MacDonald
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6, Canada; (C.F.S.); (J.A.M.)
| | - Massimo Bertinaria
- Department of Drug Science and Technology, University of Turin, Via Giuria 9, 10125 Torino, Italy; (S.G.); (V.B.); (E.G.); (M.G.); (E.M.); (F.B.); (M.G.); (F.S.)
- Correspondence: ; Tel.: +39-011-6707146
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Quintiero E, Gastaldi S, De Petrillo F, Addessi E, Bourgeois-Gironde S. Quantity-quality trade-off in the acquisition of token preference by capuchin monkeys ( Sapajus spp.). Philos Trans R Soc Lond B Biol Sci 2021; 376:20190662. [PMID: 33423630 DOI: 10.1098/rstb.2019.0662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Money represents a cornerstone of human modern economies and how money emerged as a medium of exchange is a crucial question for social sciences. Although non-human primates have not developed monetary systems, they can estimate, combine and exchange tokens. Here, we evaluated quantity-quality trade-offs in token choices in tufted capuchin monkeys as a first step in the investigation of the generalizability of tokens as reinforcers, which is a potentially relevant factor underlying the emergence of money in humans. We measured capuchins' exchange preferences when they were repeatedly provided with 10 units of three token types yielding food combinations varying in quantity and quality. Overall, capuchins maximized their quantitative payoff, preferring tokens associated with a higher food amount, rather than showing violations of rationality. However, some individuals did not maximize their qualitative payoff, possibly because of conditional valuation effects or owing to the choice overload phenomenon, according to which too many options reduce the accuracy of choice. Our study supports the importance of comparative research to finely analyse the multiple components shaping the economic behaviours of other species, possibly to achieve a more comprehensive, evolutionary- and ecologically based understanding of human economic behaviour. This article is part of the theme issue 'Existence and prevalence of economic behaviours among non-human primates'.
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Affiliation(s)
- E Quintiero
- Unità di Primatologia Cognitiva e Centro Primati, Istituto di Scienze e Tecnologie della Cognizione, Consiglio Nazionale delle Ricerche, 00197 Rome, Italy.,Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, 00185 Rome, Italy
| | - S Gastaldi
- Unità di Primatologia Cognitiva e Centro Primati, Istituto di Scienze e Tecnologie della Cognizione, Consiglio Nazionale delle Ricerche, 00197 Rome, Italy
| | - F De Petrillo
- Unità di Primatologia Cognitiva e Centro Primati, Istituto di Scienze e Tecnologie della Cognizione, Consiglio Nazionale delle Ricerche, 00197 Rome, Italy.,Institute for Advanced Study in Toulouse, 31000 Toulouse, France.,Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA
| | - E Addessi
- Unità di Primatologia Cognitiva e Centro Primati, Istituto di Scienze e Tecnologie della Cognizione, Consiglio Nazionale delle Ricerche, 00197 Rome, Italy
| | - S Bourgeois-Gironde
- Institut Jean Nicod, Département d'études cognitives, ENS, EHESS, CNRS, PSL University, UMR 8129, 75005 Paris, France
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Pellegrini C, Fornai M, Colucci R, Benvenuti L, D’Antongiovanni V, Natale G, Fulceri F, Giorgis M, Marini E, Gastaldi S, Bertinaria M, Blandizzi C, Antonioli L. A Comparative Study on the Efficacy of NLRP3 Inflammasome Signaling Inhibitors in a Pre-clinical Model of Bowel Inflammation. Front Pharmacol 2018; 9:1405. [PMID: 30559669 PMCID: PMC6287041 DOI: 10.3389/fphar.2018.01405] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/15/2018] [Indexed: 12/13/2022] Open
Abstract
Nucleotide-binding oligomerization domain leucine rich repeat and pyrin domain-containing protein 3 (NLRP3) inflammasome is pivotal in maintaining intestinal homeostasis and sustaining enteric immune responses in the setting of inflammatory bowel diseases. Drugs acting as NLRP3 blockers could represent innovative strategies for treatment of bowel inflammation. This study was performed in rats with dinitrobenzenesulfonic acid (DNBS)-induced colitis, to investigate how the direct blockade of NLRP3 inflammasome with an irreversible inhibitor (INF39) compares with Ac-YVAD-cmk (YVAD, caspase-1 inhibitor) and anakinra (IL-1β receptor antagonist), acting downstream on NLRP3 signaling. Animals with DNBS-colitis received YVAD (3 mg/kg) or anakinra (100 mg/Kg) intraperitoneally, and INF39 (25 mg/kg) or dexamethasone (DEX, 1 mg/kg) orally for 6 days, starting on the same day of colitis induction. Under colitis, there was a body weight decrease, which was attenuated by YVAD, anakinra or INF39, but not DEX. All test drugs counteracted the increase in spleen weight. The colonic shortening and morphological colonic alterations associated with colitis were counteracted by INF39, anakinra and DEX, while YVAD was without effects. Tissue increments of myeloperoxidase, tumor necrosis factor and interleukin-1β were more effectively counteracted by INF39 and DEX, than YVAD and anakinra. These findings indicate that: (1) direct inhibition of NLRP3 inflammasome with INF39 is more effective than caspase-1 inhibition or IL-1β receptor blockade in reducing systemic and bowel inflammatory alterations; (2) direct NLRP3 inhibition can be a suitable strategy for treatment of bowel inflammation.
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Affiliation(s)
| | - Matteo Fornai
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Rocchina Colucci
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padua, Italy
| | - Laura Benvenuti
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | | | - Gianfranco Natale
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Federica Fulceri
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Marta Giorgis
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Elisabetta Marini
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Simone Gastaldi
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Massimo Bertinaria
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Corrado Blandizzi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Luca Antonioli
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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Bertinaria M, Gastaldi S, Marini E, Giorgis M. Development of covalent NLRP3 inflammasome inhibitors: Chemistry and biological activity. Arch Biochem Biophys 2018; 670:116-139. [PMID: 30448387 DOI: 10.1016/j.abb.2018.11.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 07/17/2018] [Revised: 11/12/2018] [Accepted: 11/14/2018] [Indexed: 12/12/2022]
Abstract
The NOD-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome is the best recognized and most widely implicated regulator of caspase-1 activation. It is a key regulator of innate immune response and is involved in many pathophysiological processes. Recent evidences for its inappropriate activation in autoinflammatory, autoimmune, as well as in neurodegenerative diseases attract a growing interest toward the development of small molecules NLRP3 inhibitors. Based on the knowledge of biochemical and structural aspects of NLRP3 activation, one successful strategy in the identification of NLRP3 inhibitors relies on the development of covalent irreversible inhibitors. Covalent inhibitors are reactive electrophilic molecules able to alkylate nucleophiles in the target protein. These inhibitors could ensure good efficacy and prolonged duration of action both in vitro and in vivo. In spite of these advantages, effects on other signalling pathways, prone to alkylation, may occur. In this review, we will illustrate the chemistry and the biological action of the most studied covalent NLRP3 inhibitors developed so far. A description of what we know about their mechanism of action will address the reader toward a critical understanding of NLRP3 inhibition by electrophilic compounds.
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Affiliation(s)
- Massimo Bertinaria
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy.
| | - Simone Gastaldi
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
| | - Elisabetta Marini
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
| | - Marta Giorgis
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
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Farnet AM, Chevremont AC, Gil G, Gastaldi S, Ferre E. Alkylphenol oxidation with a laccase from a white-rot fungus: effects of culture induction and of ABTS used as a mediator. Chemosphere 2011; 82:284-289. [PMID: 20980040 DOI: 10.1016/j.chemosphere.2010.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Revised: 09/29/2010] [Accepted: 10/01/2010] [Indexed: 05/30/2023]
Abstract
We investigated the potential of the laccase from the white-rot fungus Marasmius quercophilus to transform certain alkylphenols (p-nonylphenol, p-octylphenol and p-t-octylphenol). We tested the reactivity of this enzyme under different conditions: in liquid cultures and using the partially purified laccase with and without 2,2'-azino-bis-3-ehtylbenzothiazoline-6-sulfonicacid (ABTS) as a mediator. The percentage of p-t-octylphenol disappearance in liquid cultures was 69.0 ± 1.5% and 81 ± 5% after a 8-d or 15-d incubation, respectively, with p-nonylphenol, these percentages were 62 ± 4% and 91 ± 6% and with p-octylphenol 37 ± 3% and 65 ± 1% after a 15-d and a 21-d incubations, respectively. Induced pre-cultures were also used to inoculate the liquid cultures to enhance p-octylphenol transformation: the percentages of disappearance were 91.0 ± 0.5% and 97 ± 1% after a 8-d and a 15-d incubation, respectively. Mass spectrometry analysis showed that the products of oxidation of p-octylphenol were dimers with a mass of 411 m/z. Furthermore, we identified a purple compound (m/z 476) formed when ABTS was added to the reaction medium with the purified laccase. This result confirms that, in complex environments such as soils or litters where many molecules can interact with the enzyme substrate or the product of oxidation, laccase activities and those of other phenoloxidases should not be measured with ABTS.
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Affiliation(s)
- A M Farnet
- Equipe Ecologie Microbienne et Biotechnologies, UMR CNRS IRD 6116, Institut Méditerranéen d'Ecologie et de Paléoécologie, Faculté des Sciences et Techniques de St Jérôme, Université Paul Cézanne, 13397 Marseille, France.
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Gastaldi S, Bertotti A, Galimi F, Sassi F, Torti D, Smalley M, Trusolino L. 400 Met as a potential therapeutic target in basal-like breast cancer. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71201-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Torti D, Bertotti A, Galimi F, Gastaldi S, Sassi F, Trusolino L. 204 Identification and pre-clinical validation of surrogate soluble biomarkers correlating with therapeutic response to met inhibition. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71011-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Bertotti A, Burbridge MF, Gastaldi S, Galimi F, Torti D, Medico E, Giordano S, Corso S, Rolland-Valognes G, Lockhart BP, Hickman JA, Comoglio PM, Trusolino L. Only a Subset of Met-Activated Pathways Are Required to Sustain Oncogene Addiction. Sci Signal 2009; 2:ra80. [DOI: 10.1126/scisignal.2000643] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ricciuti A, Burrone A, Della Beffa F, Gastaldi S, Labianca R, Lazzari M, Provantini M, Verusio C, Villa S. Changes in profession and patient-physician relationship in doctors with a personal experience of cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.17504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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De Riggi I, Gastaldi S, Surzur JM, Bertrand MP, Virgili A. Chemoselective ring construction from unsymmetrical 1,6-dienes via radical addition of sulfonyl halides. J Org Chem 2002. [DOI: 10.1021/jo00049a014] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bertrand MP, De Riggi I, Lesueur C, Gastaldi S, Nouguier R, Jaime C, Virgili A. 1,2- and 1,5-stereocontrols in 5-hexenyl radical intramol cyclocondensations: cooperative or antagonist effect. Confrontation of experimental results with MM2 calculations of transition states. J Org Chem 2002. [DOI: 10.1021/jo00124a012] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bertrand M, Gastaldi S, Nouguier R. Radical Cyclization of Dialkyldiallylammonium Salts. A Stereoselective Route to Pyrrolidines. Synlett 2000. [DOI: 10.1055/s-1997-1043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bertrand MP, Gastaldi S, Nouguier R. Influence of quaternization or coordination of nitrogen with a Lewis acid upon the diastereoselectivity of 5-exo ring closure of β-aminoalkyl radicals. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00772-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bertrand MP, Gastaldi S, Nouguier R. 4-Isopropenyl-3-tosylmethyl pyrrolidines through radical cyclizations of 4-aza-1,6-dienes - an approach to kainic acids. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)00006-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Armani U, Piana A, Cella A, Gastaldi S, Del Nero E. [Evaluation of various hemorheological parameters in nonagenarians: evidence of an increase of fibrinogen]. Boll Soc Ital Biol Sper 1990; 66:961-7. [PMID: 2096881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Cardiovascular disease is the most frequent cause of mortality in the elderly. A reduced microvascular blood flow associated with an increase in atherosclerosis might contribute to age related increases in the incidence of ischemic vascular disease. In order to evaluate the effect of age on some haemorheological parameters, blood and plasma viscosity and fibrinogen have been measured in 10 healthy elderly subjects, aged between 88 and 96 years, compared with 15 healthy young subjects (mean age 37 years). Elderly subjects showed a significant increase in plasma fibrinogen (p less than 0.0005) and a trend to an increase in plasma viscosity, whereas no difference was present in blood viscosity. These data confirm that aging is associated with a greater deal of thrombotic risk factors, the most important of which seems to be fibrinogen.
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Affiliation(s)
- U Armani
- Catedra di Fisiopatologia dell Emostasi, Università degli Studi di Genova
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Palumbo M, Palù G, Gia O, Ferrazzi E, Gastaldi S, Antonello C, Meloni GA. Bis-substituted hydroxy-anthracenediones: DNA binding and biological activity. Anticancer Drug Des 1987; 1:337-46. [PMID: 3450303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Three new hydroxy-9,10-anthracenedione derivatives (compounds 1-3 in Figure 1), bearing two charged or polar side chains at positions 2 and 4/5 of the tricyclic system, have been investigated for their DNA binding, cytotoxic and genotoxic activity. The interaction mode with nucleic acids is intercalative for compounds 1 and 2, while external and intercalative binding probably coexist for compound 3. Complexation of the nucleic acid occurs in all cases in a cooperative manner, so that drug binding favours further binding to double helical DNA. The scale of the intrinsic binding constant is discussed in terms of the nature and position of the side chain. Cell growth and DNA synthesis inhibition data match quite well with DNA affinity. Alkaline elution experiments show a correlation between drug cytotoxicity and DNA damage. Our results indicate that the position and number of OH groups, as well as of charged side chains, play an important role in modulating drug affinity for DNA and the consequent biological effects.
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Affiliation(s)
- M Palumbo
- Department of Organic Chemistry, Biopolymer Research Centre, Padova, Italy
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Tamaro M, Gastaldi S, Carlassare F, Babudri N, Pani B. Genotoxic activity of some water-soluble derivatives of 5-methoxypsoralen and 8-methoxypsoralen. Carcinogenesis 1986; 7:605-9. [PMID: 3698192 DOI: 10.1093/carcin/7.4.605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
This paper shows some results obtained by assaying the genotoxic activity on procaryotic and eucaryotic cells of some water-soluble psoralen derivatives. In particular, six newly synthesized derivatives of 5-methoxypsoralen (5-MOP) and of 8-methoxypsoralen (8-MOP) were tested; in previous studies they showed a strong anti-proliferative activity and a slight phototoxic effect; moreover, in view of a clinical use in the therapy of hyperproliferative skin diseases, these drugs should be less toxic than their parent compounds because of their good water solubility which could lead to a more efficient absorption and excretion. All the compounds tested here have shown genotoxic activity on both procaryotic and eucaryotic systems: however, on the procaryotic cells the water-soluble derivatives were less genotoxic than their respective parent compounds 5-MOP and 8-MOP. Quite different results were obtained on V79 Chinese hamster cells, showing that, in general, the 8-methoxy-derivatives are more mutagenic than the methoxy-ones, although the 5-MOP itself was shown to be highly genotoxic in this system. This fact confirms that a conclusive estimate of the genotoxic risk related to the use of new drugs cannot be drawn from the results obtained on a single biological system.
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Palù G, Palumbo M, Cusinato R, Antonello C, Gastaldi S, Marciani Magno S, Meloni GA. [Antiviral activity of furocoumarins]. G Ital Chemioter 1984; 31:49-54. [PMID: 6088343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Palumbo M, Antonello C, Viano I, Santiano M, Gia O, Gastaldi S, Magno SM. New anthracenedione derivatives: interaction with DNA and biological effects. Chem Biol Interact 1983; 44:207-18. [PMID: 6191877 DOI: 10.1016/0009-2797(83)90050-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Two anthracenedione derivatives [1 - (omega - diethylaminopropylamido) - 4 - hydroxy - 9,10 - anthracenedione hydrochloride (I) and 1 - (omega - diethylaminopropylamido) - 2 - methoxy - 4 - hydroxy - 9, 10 - anthracenedione hydrochloride (II)], having an electron-rich planar chromophore and an amino-substituted side chain, have been synthesized. Their binding ability to DNA was investigated by means of spectroscopic, equilibrium dialysis and fluorescence measurements. Their inhibition efficiency on nucleic acid synthesis was also evaluated both in mouse and human cells. Our results indicate that, in comparison with adriamycin, compound I shows a slightly weaker complexation ability to DNA, while compound II interacts with DNA at a substantially lower level. These data match quite well with the biological response on the inhibition of DNA and RNA synthesis exhibited by the above mentioned compounds; in fact compound I is slightly less efficient than adriamycin and about ten times more efficient than compound II. The close relationship between the results of physicochemical and biological studies is discussed.
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