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Budassi F, Marchioro C, Canton M, Favaro A, Sturlese M, Urbinati C, Rusnati M, Romagnoli R, Viola G, Mariotto E. Design, synthesis and biological evaluation of novel 2,4-thiazolidinedione derivatives able to target the human BAG3 protein. Eur J Med Chem 2023; 261:115824. [PMID: 37783101 DOI: 10.1016/j.ejmech.2023.115824] [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: 08/11/2023] [Revised: 09/15/2023] [Accepted: 09/16/2023] [Indexed: 10/04/2023]
Abstract
The Bcl-2-associated athanogene 3 (BAG3) protein plays multiple roles in controlling cellular homeostasis, and it has been reported to be deregulated in many cancers, leading tumor cell apoptosis escape. BAG3 protein is then an emerging target for its oncogenic activities in both leukemia and solid cancers, such as medulloblastoma. In this work a series of forty-four compounds were designed and successfully synthesized by the modification and optimization of a previously reported 2,4-thiazolidinedione derivative 28. Using an efficient cloning and transfection in human embryonic kidney HEK-293T cells, BAG3 was collected and purified by chromatographic techniques such as IMAC and SEC, respectively. Subsequently, through Surface Plasmon Resonance (SPR) all the compounds were evaluated for their binding ability to BAG3, highlighting the compound FB49 as the one having the greatest affinity for the protein (Kd = 45 ± 6 μM) also against the reference compound 28. Further analysis carried out by Saturation Transfer Difference (STD) Nuclear Magnetic Resonance (NMR) spectroscopy further confirmed the highest affinity of FB49 for the protein. In vitro biological investigation showed that compound FB49 is endowed with an antiproliferative activity in the micromolar range in three human tumoral cell lines and more importantly is devoid of toxicity in human peripheral mononuclear cell deriving from healthy donors. Moreover, FB49 was able to block cell cycle in G1 phase and to induce apoptosis as well as autophagy in medulloblastoma HD-MB03 treated cells. In addition, FB49 demonstrated a synergistic effect when combined with a chemotherapy cocktail of Vincristine, Etoposide, Cisplatin, Cyclophosphamide (VECC). In conclusion we have demonstrated that FB49 is a new derivative able to bind human BAG3 with high affinity and could be used as BAG3 modulator in cancers correlated with overexpression of this protein.
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Affiliation(s)
- Federica Budassi
- Synthetic Chemistry, DDD, Aptuit an Evotec Company, Via Alessandro Fleming 4, 37135, Verona, Italy
| | - Chiara Marchioro
- Laboratory of Pediatric Hematology-Oncology Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padova, Italy
| | - Martina Canton
- Laboratory of Pediatric Hematology-Oncology Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padova, Italy
| | - Annagiulia Favaro
- Molecular Modeling Section (MMS), Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131, Padova, Italy
| | - Mattia Sturlese
- Molecular Modeling Section (MMS), Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131, Padova, Italy
| | - Chiara Urbinati
- Experimental Oncology and Immunology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa11, 25121, Brescia, Italy
| | - Marco Rusnati
- Experimental Oncology and Immunology, Department of Molecular and Translational Medicine, University of Brescia, Viale Europa11, 25121, Brescia, Italy
| | - Romeo Romagnoli
- Dipartimento di Scienze Chimiche, Farmaceutiche e Agrarie, Università degli Studi di Ferrara, Via Luigi Borsari 46, 44121, Ferrara, Italy
| | - Giampietro Viola
- Laboratory of Pediatric Hematology-Oncology Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padova, Italy; Istituto di Ricerca Pediatrica (IRP), Corso Stati Uniti 4F, 35127, Padova, Italy.
| | - Elena Mariotto
- Laboratory of Pediatric Hematology-Oncology Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padova, Italy; Istituto di Ricerca Pediatrica (IRP), Corso Stati Uniti 4F, 35127, Padova, Italy.
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2
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Mariotto E, Rampazzo E, Bortolozzi R, Rruga F, Zeni I, Manfreda L, Marchioro C, Canton M, Cani A, Magni R, Luchini A, Bresolin S, Viola G, Persano L. Molecular and functional profiling of chemotolerant cells unveils nucleoside metabolism-dependent vulnerabilities in medulloblastoma. Acta Neuropathol Commun 2023; 11:183. [PMID: 37978570 PMCID: PMC10655385 DOI: 10.1186/s40478-023-01679-7] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/26/2023] [Indexed: 11/19/2023] Open
Abstract
Chemotherapy resistance is considered one of the main causes of tumor relapse, still challenging researchers for the identification of the molecular mechanisms sustaining its emergence. Here, we setup and characterized chemotherapy-resistant models of Medulloblastoma (MB), one of the most lethal pediatric brain tumors, to uncover targetable vulnerabilities associated to their resistant phenotype. Integration of proteomic, transcriptomic and kinomic data revealed a significant deregulation of several pathways in resistant MB cells, converging to cell metabolism, RNA/protein homeostasis, and immune response, eventually impacting on patient outcome. Moreover, resistant MB cell response to a large library of compounds through a high-throughput screening (HTS), highlighted nucleoside metabolism as a relevant vulnerability of chemotolerant cells, with peculiar antimetabolites demonstrating increased efficacy against them and even synergism with conventional chemotherapeutics. Our results suggest that drug-resistant cells significantly rewire multiple cellular processes, allowing their adaptation to a chemotoxic environment, nevertheless exposing alternative actionable susceptibilities for their specific targeting.
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Affiliation(s)
- Elena Mariotto
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
- Unit of Biostatistics, Department of Cardiac, Thoracic and Vascular Sciences and Public Health, University of Padova, Via Loredan 18, 35131, Padua, Italy
| | - Elena Rampazzo
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy.
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy.
| | - Roberta Bortolozzi
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy.
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy.
- Section of Pharmacology, Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Largo Meneghetti 2, 35131, Padua, Italy.
| | - Fatlum Rruga
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Ilaria Zeni
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
| | - Lorenzo Manfreda
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Chiara Marchioro
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Martina Canton
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Alice Cani
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Ruben Magni
- Center for Applied Proteomics and Molecular Medicine, George Mason University, 10920 George Mason Circle, MSN 1A9, Manassas, VA, 20110, USA
| | - Alessandra Luchini
- Center for Applied Proteomics and Molecular Medicine, George Mason University, 10920 George Mason Circle, MSN 1A9, Manassas, VA, 20110, USA
| | - Silvia Bresolin
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Giampietro Viola
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
| | - Luca Persano
- Department of Women's and Children's Health, University of Padova, Via Giustiniani 3, 35128, Padua, Italy
- Pediatric Research Institute, Corso Stati Uniti 4, 35127, Padua, Italy
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3
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Luque-Navarro PM, Carrasco-Jiménez MP, Goracci L, Paredes JM, Espinar-Barranco L, Valverde-Pozo J, Torretta A, Parisini E, Mariotto E, Marchioro C, Laso A, Marco C, Viola G, Lanari D, López Cara LC. New bioisosteric sulphur-containing choline kinase inhibitors with a tracked mode of action. Eur J Med Chem 2023; 246:115003. [PMID: 36493617 DOI: 10.1016/j.ejmech.2022.115003] [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: 09/01/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Since the identification of human choline kinase as a protein target against cancer progression, many compounds have been designed to inhibit its function and reduce the biosynthesis of phosphatidylcholine. Herein, we propose a series of bioisosteric inhibitors that are based on the introduction of sulphur and feature improved activity and lipophilic/hydrophilic balance. The evaluation of the inhibitory and of the antiproliferative properties of the PL (dithioethane) and FP (disulphide) libraries led to the identification of PL 48, PL 55 and PL 69 as the most active compounds of the series. Docking analysis using FLAP suggests that for hits to leads, binding mostly involves an interaction with the Mg2+ cofactor, or its destabilization. The most active compounds of the two series are capable of inducing apoptosis following the mitochondrial pathway and to significantly reduce the expression of anti-apoptotic proteins such as the Mcl-1. The fluorescence properties of the compounds of the PL library allowed the tracking of their mode of action, while PAINS (Pan Assays Interference Structures) filtration databases suggest the lack of any unspecific biological response.
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Affiliation(s)
- Pilar M Luque-Navarro
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, University of Granada, Campus of Cartuja s/n, Granada, 18071, Spain; Department of Pharmaceutical Sciences, University of Perugia, Perugia, 06123 Italy
| | - M Paz Carrasco-Jiménez
- Department of Biochemistry and Molecular Biology I, University of Granada, Campus of Fuentenueva s/n, Granada, 18071, Spain.
| | - Laura Goracci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, 06123, Italy
| | - Jose M Paredes
- Department of Physical-Chemistry, Faculty of Pharmacy, University of Granada, Campus of Cartuja s/n, Granada, 18071, Spain
| | - Laura Espinar-Barranco
- Department of Physical-Chemistry, Faculty of Pharmacy, University of Granada, Campus of Cartuja s/n, Granada, 18071, Spain
| | - Javier Valverde-Pozo
- Department of Physical-Chemistry, Faculty of Pharmacy, University of Granada, Campus of Cartuja s/n, Granada, 18071, Spain
| | - Archimede Torretta
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy
| | - Emilio Parisini
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, Milano, 20133, Italy; Department of Biotechnology, Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, LV, 1006, Latvia; Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, Bologna, 40126, Italy
| | - Elena Mariotto
- Department of Woman's and Child's Health, Laboratory of Oncohematology, University of Padova, Padova, 35128, Italy
| | - Chiara Marchioro
- Department of Woman's and Child's Health, Laboratory of Oncohematology, University of Padova, Padova, 35128, Italy
| | - Alejandro Laso
- Department of Biochemistry and Molecular Biology I, University of Granada, Campus of Fuentenueva s/n, Granada, 18071, Spain
| | - Carmen Marco
- Department of Biochemistry and Molecular Biology I, University of Granada, Campus of Fuentenueva s/n, Granada, 18071, Spain
| | - Giampietro Viola
- Department of Woman's and Child's Health, Laboratory of Oncohematology, University of Padova, Padova, 35128, Italy; Istituto di Ricerca Pediatrica (IRP) Fondazione Città della Speranza, Corso Stati Uniti 4, Padova, 35128, Italy.
| | - Daniela Lanari
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, 06123 Italy.
| | - Luisa Carlota López Cara
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, University of Granada, Campus of Cartuja s/n, Granada, 18071, Spain.
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4
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Mariotto E, Rampazzo E, Bortolozzi R, Rruga F, Manfreda L, Marchioro C, Bresolin S, Viola G, Persano L. MODL-21. Multi-omics investigation of medulloblastoma resistant models reveals functional association between intracellular regulatory networks and drug susceptibility. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac079.644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Medulloblastoma (MB) is the most common malignant brain tumor of childhood. Despite high-dose radio/chemotherapy treatment, 15-30% of patients still display a high risk of tumor recurrence. In this context, the characterization of innovative cellular models resembling therapy-induced drug resistance represents an unprecedented opportunity for selecting relevant therapies for chemotherapy-refractory patients. In order to unveil the molecular mechanisms sustaining chemotherapy resistance in MB, we setup in vitro models of MB drug resistance by exposing Patient-Derived MB (PD-MB) cells to a combination of the commonly used chemotherapeutics for pediatric MB treatment. Integration of multi-omics data, including transcriptional, proteomic and kinase activation profiling, disclosed that drug resistant PD-MB cells are characterized by a significant deregulation of several cancer-related pathways converging to metabolism of xenobiotics, adaptation of the biochemical processes sustaining energetic metabolic demand, cell proliferation and survival, protein homeostasis, RNA processing and modification, and immune response. Moreover, this intriguing regulatory network was functionally associated to the response of drug-resistant MB cells to a large library of compounds through a semi-automated High-Throughput drug Screening (HTS) workflow, suggesting the antimetabolite class of drugs as relevant therapeutics displaying high selectivity and efficacy against resistant MB models, together with a significant synergistic action when combined with standard chemotherapeutic agents. Collectively, our results suggest that drug-resistant MB cells are subjected to a peculiar adaptation of multiple intracellular processes during adaptation to chemotherapy, which protects them from the toxic environment but, at the same time, provides targetable vulnerabilities for therapeutic purposes.
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Affiliation(s)
- Elena Mariotto
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Elena Rampazzo
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Roberta Bortolozzi
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Fatlum Rruga
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Lorenzo Manfreda
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Chiara Marchioro
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Silvia Bresolin
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Giampietro Viola
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Luca Persano
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
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5
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Bortolozzi R, Mariotto E, Rampazzo E, Manfreda L, Marchioro C, Rruga F, Persano L, Viola G. MODL-20. Metabolic rewiring support the onset of chemotherapy resistance in medulloblastoma. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac079.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Medulloblastoma (MB) is the deadliest brain tumor of childhood, intrinsically characterized by fast growth, high invasiveness, and resistance to treatments. With the aim to deepen the molecular basis of MB aggressiveness and recurrence, we established an in vitro model of MB resistance to chemotherapy, in which, a weekly exposure to a cocktail of chemotherapeutics commonly used in MB treatment (Vincristine, Etoposide, Cisplatin, Cyclophosphamide – VECC) induces the selection of cells that progressively acquire resistance to subsequent VECC treatments. Preliminary data on our model of MB resistance show that resistant cells induce the activation of the two main regulator of pentose phosphate pathway TKT and G6PD via the activation of Nrf2 transcriptional activity. Moreover, resistant cells show an increase in hypoxia inducible factor-1α (HIF-1α) together with an augmented expression of glycolytic enzymes HK1, PFKB-3, PDK1 and LDHA and increased glycolytic capacity. Interestingly, enrichment analysis on label free mass spectrometry data reveal that the most significant terms deriving from the upregulated proteins, that characterized resistant cells, were related to metabolic processes such as “carbon metabolism”, “fatty acid beta oxidation”, “tricarboxylic acid cycle” and “carboxylic acid catabolic processes”.Consistently with recent studies that highlight the relevance of metabolic plasticity of cancer cells in chemotherapy adaptation, our data suggest a metabolic uncoupling in which MB resistant cells, through the alteration of peculiar metabolic processes, may satisfy their altered energetic demands through alternative metabolic pathways. In this way, the generation of a new balance of intracellular metabolites finally provide increased resistance to external insults (i.e., chemotherapeutics) and a greater ability of detoxifying the intracellular compartments.
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Affiliation(s)
- Roberta Bortolozzi
- Istituto di Ricerca Pediatrica , Padova , Italy
- Department of Women's and Children's Health, University of Padova , Padova , Italy
| | - Elena Mariotto
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Elena Rampazzo
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Lorenzo Manfreda
- Department of Women's and Children's Health, University of Padova , Padova , Italy
| | - Chiara Marchioro
- Department of Women's and Children's Health, University of Padova , Padova , Italy
| | - Fatlum Rruga
- Department of Women's and Children's Health, University of Padova , Padova , Italy
| | - Luca Persano
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
| | - Giampietro Viola
- Department of Women's and Children's Health, University of Padova , Padova , Italy
- Istituto di Ricerca Pediatrica , Padova , Italy
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6
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Dal Cin M, Davalli S, Marchioro C, Passarini M, Perini O, Provera S, Zaramella A. Analytical methods for the monitoring of solid phase organic synthesis. Farmaco 2002; 57:497-510. [PMID: 12088065 DOI: 10.1016/s0014-827x(02)01215-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Solid phase synthesis (SPS) is a powerful technique to assemble compound libraries in high-throughput parallel and combinatorial synthesis. The widespread applications of these techniques required the development of analytical methods for both structural elucidation and reaction monitoring. This review covers some recently developed techniques for on-bead analyses together with solution-state ones. Particular emphasis is devoted to software and hardware improvements for automated high-throughput analysis.
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Affiliation(s)
- M Dal Cin
- Computational, Analytical and Structural Sciences, GlaxoSmithKline Medicines Research Center, Verona, Italy
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7
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Missio A, Marchioro C, Rossi T, Panunzio M, Selva S, Seneci P. Polymer-supported silyl cyanide and silyl azide: useful reagents for solid-phase applications. Biotechnol Bioeng 2000; 71:38-43. [PMID: 10629534] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
The support of a delicate reagent on a solid matrix allows for better and safer handling of the reagent itself. Because we had an interest in silicon-based supported reagents(1) we turned our attention to a polymer-supported trialkylsilyl cyanide and trialkylsilyl azide starting from a commercially available trialkylsilane resin. The supported cyanide was obtained with excellent yield and proved to be shelf-stable. This supported reagent was reacted with a series of aldehydes and ketones yielding the corresponding polymer-supported cyanohydrins in good-to-excellent yields. A stability study on a model cyanohydrin demonstrated that these supported intermediates also can be stored for a prolonged time. For the last step, a cleavage strategy that could release either cyanohydrins or alpha-hydroxy esters was adopted. Finally, we prepared a polymer-supported trialkylsilyl azide, which also proved to be shelf-stable.
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Affiliation(s)
- A Missio
- GlaxoWellcome Medicines Research Centre, Via Fleming 4, 37135 Verona, Italy.
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8
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Micheli F, Di Fabio R, Baraldi D, Conti N, Cugola A, Gastaldi P, Giacobbe S, Marchioro C, Mugnaini M, Rossi L, Pecunioso A, Pentassuglia G. Substituted indole-2-carboxylates as potent antagonists of the glycine binding site associated with the NMDA receptor. Arch Pharm (Weinheim) 1999; 332:271-8. [PMID: 10489537 DOI: 10.1002/(sici)1521-4184(19998)332:8<271::aid-ardp271>3.0.co;2-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A novel series of indole-2-carboxylate analogues of GV150526 (1) in which the propenoic double bond was substituted with different "probes" or replaced by a isosteric cyclopropyl moiety were synthesized and evaluated for their affinity profile in order to obtain further information on the pharmacophoric model of the glycine binding site associated to the NMDA receptor.
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Affiliation(s)
- F Micheli
- Glaxo Wellcome S.p.A., Medicines Research Centre, Verona, Italy
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9
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Abstract
The asymmetric synthesis of carboxyphenyl prolines was performed according to Schöllkopf methodology, to prepare possible antagonists of the metabotropic glutamate receptor mGluR1.
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Affiliation(s)
- F Micheli
- Glaxo Wellcome S.p.A., Medicines Research Centre, Verona, Italy.
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10
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Micheli F, Di Fabio R, Capelli AM, Cugola A, Curcuruto O, Feriani A, Gastaldi P, Gaviraghi G, Marchioro C, Orlandi A, Pozzan A, Quaglia AM, Reggiani A, van Amsterdam F. Cycloalkyl indole-2-carboxylates as useful tools for mapping the "north-eastern" region of the glycine binding site associated with the NMDA receptor. Arch Pharm (Weinheim) 1999; 332:73-80. [PMID: 10228452 DOI: 10.1002/(sici)1521-4184(19993)332:3<73::aid-ardp73>3.0.co;2-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A novel series of indole-2-carboxylate analogues of GV 150526 (1) in which the terminal phenyl ring belonging to the side chain present in the position C-3 has been replaced with a bridged cycloalkyl group was synthesized and evaluated for its pharmacological profile. Modelling studies on this class of novel glycine antagonist allowed us to identify an asymmetric lipophilic pocket present in the "North-Eastern" region of the pharmacophoric model of the glycine binding site associated to the NMDA receptor. Among the derivatives prepared, 3-[2-(1-adamantylaminocarbonyl)ethenyl]-4,6-dichloroindole-2 -carboxylic acid 6b and 3-[2-(norbornylaminocarbonyl)ethenyl]-4,6-dichloroindole-2-c arboxylic acid 6l were found to be antagonists acting at the strychnine-insensitive glycine binding site, showing nanomolar affinity for the glycine binding site (Ki = 63 and 19 nM, respectively), coupled with high glutamate receptor selectivity (IC50 > 10(-5) M at the NMDA, AMPA, KA binding sites) and high in vivo potency after systemic administration by inhibition of convulsion induced by NMDA in mice.
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Affiliation(s)
- F Micheli
- Glaxo Wellcome S.p.A., Medicines Research Centre, Verona, Italy
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11
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Kajbaf M, Marchioro C, Barnaby JR, Pellegatti M. In vivo metabolism of a novel cholecystokinin B (CCK-B) antagonist in rat and dog plasma and rat faeces. Xenobiotica 1998; 28:785-94. [PMID: 9741957 DOI: 10.1080/004982598239209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
1. The in vivo metabolism of a novel CCK-B antagonist ((+)-N-[1-(adamantane-1-methyl)-2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-1H -1,5-benzodiazepin-3-yl]-N'-phenylurea, GV150013X) was investigated using rat and dog plasma (male and female) and rat faeces samples after administration of GV150013X. 2. Four monohydroxy and four dihydroxy metabolites of GV150013X were identified by comparison with authentic standards using hplc and results from previous in vitro studies. 3. In both rat and dog plasma, GV150013X was converted to one major and other minor metabolites. 4. Qualitatively there is no species or sex differences in the formation of metabolites except that minor metabolite M1 was not detected in dog plasma. 5. Traces of GV150013X and the major metabolite were seen in rat plasma sample 24 h after administration. 6. Hplc with UV and radiochemical detection was used to identify metabolites. Major, non-labelled GV150013X metabolites from rat faeces were collected for characterization by nmr.
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Affiliation(s)
- M Kajbaf
- Glaxo Wellcome SpA, Medicines Research Centre, Verona, Italy
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Zancanaro C, Nano R, Marchioro C, Sbarbati A, Boicelli A, Osculati F. Magnetic resonance spectroscopy investigations of brown adipose tissue and isolated brown adipocytes. J Lipid Res 1994. [DOI: 10.1016/s0022-2275(20)39925-9] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.9] [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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Zancanaro C, Nano R, Marchioro C, Sbarbati A, Boicelli A, Osculati F. Magnetic resonance spectroscopy investigations of brown adipose tissue and isolated brown adipocytes. J Lipid Res 1994; 35:2191-9. [PMID: 7897317] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Brown adipose tissue and collagenase-isolated brown adipocytes were investigated in rats by means of 1H and 13C nuclear magnetic resonance spectroscopy. After chloroform-methanol extraction of brown adipose tissue, proton and natural abundance 13C spectra of the chloroform fraction showed resonances attributable to triglycerides, and were qualitatively similar to those of the corresponding fraction of white adipose tissue. By means of quantitative analysis of 1H spectra, fatty acid unsaturation and polyunsaturation in triglycerides were found to be lower in brown than white adipose tissue; moreover, unsaturation parameters decreased in triglyceride fatty acids of brown adipose tissue upon norepinephrine administration or cold acclimatization of rats, and were affected by the age of donors. The molar percentage of mono- and polyunsaturated C18 fatty acids in triglycerides was determined from 13C spectra and found to change in the early post-natal period. Isolated, agarose-embedded brown adipocytes from 4-day-old rats showed a number of peaks in the carbohydrate region of 1H spectra that were not present in spectra of white adipocytes and almost disappeared in brown fat cells of older animals. These peaks could be restored by insulin exposure. Natural abundance 13C spectra of isolated brown adipocytes were resolved enough to allow unambiguous assignment of resonances to carbons of fatty acids, glycerol, glucose, ethanolamine, and choline. Calculation of the mono- to polyunsaturated fatty acids ratio in the cells was also performed. Nuclear magnetic resonance spectroscopy is a useful tool for the investigation of brown adipose tissue and adipocytes therefrom.
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Affiliation(s)
- C Zancanaro
- Institute of Human Anatomy and Histology, University of Verona, Italy
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Bassini C, Bismara C, Carlesso R, Feriani A, Gaviraghi G, Marchioro C, Perboni A, Shaw RE, Tamburini B, Tarzia G. Synthesis and antimicrobial activity of DNA-gyrase inhibiting derivatives of 4-oxo-1,4-dihydro-3-pyridinecarboxylic acid. Farmaco 1993; 48:159-189. [PMID: 8388214] [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: 05/22/2023]
Abstract
A series of 6-substituted-1-aryl-4-oxo-1,4-dihydronicotinic acids were synthesised as monocyclic analogues of the quinolones. The 6-(2-aryl-1-methylethenyl)- and of the 6-(2-arylethenyl)-substituted compounds were shown to possess antibacterial properties that correlate with DNA gyrase inhibitory activity. Differently from the quinolones the antimicrobial activity of the compounds of this study is predominantly against Gram positive strains. The structure-activity relationships ascertained for these monocyclic compounds differ from those established for the quinolones.
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Affiliation(s)
- C Bassini
- Department of Chemistry, Glaxo S.p.a. Research Laboratories, Verona, Italy
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Frigerio A, Marchioro C, Pastorino A. [New analytical orientations in the study of drugs]. Boll Chim Farm 1986; 125:138-43. [PMID: 3801158] [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: 01/07/2023]
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