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Carullo G, Mazzotta S, Ceramella J, Iacopetta D, Ramunno A, Rosano C, Brizzi A, Campiani G, Aiello F, Sinicropi MS. Development of 1-(2-aminophenyl)pyrrole-based amides acting as human topoisomerase I inhibitors. Arch Pharm (Weinheim) 2023; 356:e2300270. [PMID: 37452410 DOI: 10.1002/ardp.202300270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
Topoisomerases are ubiquitous enzymes in the human body, particularly involved in cancer development and progression. Topoisomerase I (topoI) performs DNA relaxation reactions by "controlled rotation" rather than by "strand passage." The inhibition of topoI has become a useful strategy to control cancer cell proliferation. Nowadays, different compounds have undergone clinical trials, but the search for new molecular entities is necessary and benefits from medicinal chemistry efforts. Pyrrole-based compounds emerged as promising antiproliferative agents, with particular interest in breast cancer therapy and topoI inhibition. Starting from these observations and based on the scaffold-hopping approach, we developed a small library of 1-(2-aminophenyl)pyrrole-based amides (7a-f) as new anticancer agents. Tested on a panel of cancer cell lines, 7a-f displayed the most interesting profile in MDA-MB-231 cells, where the most active compounds, 7d-f, were able to induce death by apoptosis. Direct enzymatic assays and docking simulations on the topoI active site (PDB: 1A35) revealed the inhibitory activity and potential binding site for the newly developed 1-(2-aminophenyl)pyrrole-based amides.
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Affiliation(s)
- Gabriele Carullo
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Siena, Italy
| | - Sarah Mazzotta
- Dipartimento di Chimica, Università degli Studi di Milano, Milano, Italy
| | - Jessica Ceramella
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Rende, Italy
| | - Domenico Iacopetta
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Rende, Italy
| | - Anna Ramunno
- Dipartimento di Farmacia, Università degli Studi di Salerno, Fisciano, Italy
| | - Camillo Rosano
- Unità di Proteomica e Spettrometria di Massa, IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Antonella Brizzi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Siena, Italy
| | - Giuseppe Campiani
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Siena, Italy
| | - Francesca Aiello
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Rende, Italy
| | - Maria S Sinicropi
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Rende, Italy
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Tague AJ, Hoang Pham Q, Richardson C, Pyne SG, Hyland CJT. Diastereoselective Pd-catalyzed Decarboxylative (4+2) Cycloaddition Reactions of 4-Vinylbenzoxazinanones and 2-Nitro-1,3-enynes. Chemistry 2023:e202302406. [PMID: 37718289 DOI: 10.1002/chem.202302406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/12/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
A formal palladium-catalyzed decarboxylative (4+2) cycloaddition reaction between 4-vinylbenzoxazinanones and 2-nitro-1,3-enynes has been developed to produce highly valuable, densely functionalized tetrahydroquinolines in moderate to excellent yields with high diastereoselectivity under mild reaction conditions. The optimised protocol tolerates a range of substituted 2-nitro-1,3-enynes, which represent an under-utilized class of dipolarophile for transition-metal catalyzed cycloadditions. The employed reaction methodology facilitates efficient cycloaddition with both N-H- and N-Ts-4-vinylbenzoxazinanone dipole precursors. The stereochemistry of the major and minor diastereomeric (4+2) cycloadducts was determined by single crystal X-ray analyses. A mechanistic rationale for the high intrinsic diastereoselectivity and preliminary enantioselective experiments are also presented. The tetrahydroquinoline cycloadduct products feature numerous pendant functionalities, including a vinyl handle, an internal alkyne motif and a nitro functionality (which functions as a latent C-3 nitrogen substituent) for further synthetic manipulations.
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Affiliation(s)
- Andrew J Tague
- School of Chemistry and Molecular Bioscience, Molecular Horizons Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Quoc Hoang Pham
- School of Chemistry and Molecular Bioscience, Molecular Horizons Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Christopher Richardson
- School of Chemistry and Molecular Bioscience, Molecular Horizons Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Stephen G Pyne
- School of Chemistry and Molecular Bioscience, Molecular Horizons Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Christopher J T Hyland
- School of Chemistry and Molecular Bioscience, Molecular Horizons Research Institute, University of Wollongong, Wollongong, New South Wales, 2522, Australia
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3
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Keller JG, Petersen KV, Mizielinski K, Thiesen C, Bjergbæk L, Reguera RM, Pérez-Pertejo Y, Balaña-Fouce R, Trejo A, Masdeu C, Alonso C, Knudsen BR, Tesauro C. Gel-Free Tools for Quick and Simple Screening of Anti-Topoisomerase 1 Compounds. Pharmaceuticals (Basel) 2023; 16:ph16050657. [PMID: 37242440 DOI: 10.3390/ph16050657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/21/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
With the increasing need for effective compounds against cancer or pathogen-borne diseases, the development of new tools to investigate the enzymatic activity of biomarkers is necessary. Among these biomarkers are DNA topoisomerases, which are key enzymes that modify DNA and regulate DNA topology during cellular processes. Over the years, libraries of natural and synthetic small-molecule compounds have been extensively investigated as potential anti-cancer, anti-bacterial, or anti-parasitic drugs targeting topoisomerases. However, the current tools for measuring the potential inhibition of topoisomerase activity are time consuming and not easily adaptable outside specialized laboratories. Here, we present rolling circle amplification-based methods that provide fast and easy readouts for screening of compounds against type 1 topoisomerases. Specific assays for the investigation of the potential inhibition of eukaryotic, viral, or bacterial type 1 topoisomerase activity were developed, using human topoisomerase 1, Leishmania donovani topoisomerase 1, monkeypox virus topoisomerase 1, and Mycobacterium smegmatis topoisomerase 1 as model enzymes. The presented tools proved to be sensitive and directly quantitative, paving the way for new diagnostic and drug screening protocols in research and clinical settings.
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Affiliation(s)
| | | | | | - Celine Thiesen
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark
| | - Lotte Bjergbæk
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark
| | - Rosa M Reguera
- Department of Biomedical Sciences, Faculty of Veterinary Medicine, University of León, 24071 León, Spain
| | - Yolanda Pérez-Pertejo
- Department of Biomedical Sciences, Faculty of Veterinary Medicine, University of León, 24071 León, Spain
| | - Rafael Balaña-Fouce
- Department of Biomedical Sciences, Faculty of Veterinary Medicine, University of León, 24071 León, Spain
| | - Angela Trejo
- Department of Organic Chemistry, Faculty of Pharmacy, University of Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
| | - Carme Masdeu
- Department of Organic Chemistry, Faculty of Pharmacy, University of Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
| | - Concepcion Alonso
- Department of Organic Chemistry, Faculty of Pharmacy, University of Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
| | - Birgitta R Knudsen
- VPCIR Biosciences ApS, 8000 Aarhus C, Denmark
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark
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Design, Synthesis, and Cytotoxicity and Topoisomerase I/IIα Inhibition Activity of Pyrazolo[4,3-f]quinoline Derivatives. Pharmaceuticals (Basel) 2022; 15:ph15040399. [PMID: 35455396 PMCID: PMC9026320 DOI: 10.3390/ph15040399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 02/01/2023] Open
Abstract
With the several targets of cancer treatment, inhibition of DNA topoisomerase activity is one of the well-known focuses in cancer chemotherapy. Here, we describe the design and synthesis of a novel series of pyrazolo[4,3-f]quinolines with potential anticancer/topoisomerase inhibition activity. Forty newly designed pyrazolo[4,3-f]quinoline derivatives were synthesized via inverse imino Diels–Alder reaction. The antiproliferative activity of the synthesized derivatives was initially measured in the human NUGC-3 cancer cell line. Then, the selected compounds 1B, 1C, 1M, 2A, 2D, 2E, 2F, and 2R with higher activity among tested compounds were screened against six cancer cell lines, including ACHN, HCT-15, MM231, NCI-H23, NUGC-3, and PC-3. The results demonstrated that the compounds 1M, 2E, and 2P were most effective in all cancer cell lines exhibiting GI50 below 8 µM. Among them, 2E showed an equivalent inhibition pattern of topoisomerase IIα activity to that of etoposide, positive control at a 100 µM dose.
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