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Defant A, Mancini I. A Comprehensive Computational NMR Analysis of Organic Polyarsenicals including the Marine Sponge-Derived Arsenicins A-D and Their Synthetic Analogs. Mar Drugs 2023; 21:511. [PMID: 37888446 PMCID: PMC10608599 DOI: 10.3390/md21100511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023] Open
Abstract
The adamantane structure of arsenicin A and nor-adamantane structures of arsenicins B-D have gained attention as unique natural polyarsenicals, as well as hits showing promising anticancer activity. The purpose of this study is to apply the predictive power of NMR DFT calculations in order to identify a valid tool to be used in the structural elucidation of similar molecules. 1H- and 13C-NMR chemical shifts of twelve natural and synthetic polyarsenical analogs were calculated and validated by comparison with experimental data acquired in CDCl3 solutions, in regard to mean absolute error (MAE) values under various combinations of two methods (GIAO and CSGT), four functionals and five basis sets, also considering relativistic effects. The best computational approaches are highlighted for predicting the chemical shifts of 1H and 13C nuclei and J(1H,1H) coupling constants in the series of O- and S-polyarsenicals. This comprehensive analysis contributes to making NMR spectroscopy appealing for the structural elucidation of such molecules, contrary to the first structural elucidation of natural arsenicin A, in which the experimental NMR analysis was limited by the poor presence of proton and carbon atoms in its structure and by the shortage of reference data.
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Affiliation(s)
- Andrea Defant
- Laboratory of Bioorganic Chemistry, Department of Physics, University of Trento, Via Sommarive 14, I-38123 Trento, Italy
| | - Ines Mancini
- Laboratory of Bioorganic Chemistry, Department of Physics, University of Trento, Via Sommarive 14, I-38123 Trento, Italy
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2
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Vigna J, Sighel D, Rosatti EF, Defant A, Pancher M, Sidarovich V, Quattrone A, Mancini I. Expanding the Chemical Space of Arsenicin A-C Related Polyarsenicals and Evaluation of Some Analogs as Inhibitors of Glioblastoma Stem Cell Growth. Mar Drugs 2023; 21:md21030186. [PMID: 36976235 PMCID: PMC10051910 DOI: 10.3390/md21030186] [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: 02/06/2023] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
The marine polyarsenical metabolite arsenicin A is the landmark of a series of natural and synthetic molecules characterized by an adamantane-like tetraarsenic cage. Arsenicin A and related polyarsenicals have been evaluated for their antitumor effects in vitro and have been proven more potent than the FDA-approved arsenic trioxide. In this context, we have expanded the chemical space of polyarsenicals related to arsenicin A by synthesizing dialkyl and dimethyl thio-analogs, the latter characterized with the support of simulated NMR spectra. In addition, the new natural arsenicin D, the scarcity of which in the Echinochalina bargibanti extract had previously limited its full structural characterization, has been identified by synthesis. The dialkyl analogs, which present the adamantane-like arsenicin A cage substituted with either two methyl, ethyl, or propyl chains, were efficiently and selectively produced and evaluated for their activity on glioblastoma stem cells (GSCs), a promising therapeutic target in glioblastoma treatment. These compounds inhibited the growth of nine GSC lines more potently than arsenic trioxide, with GI50 values in the submicromolar range, both under normoxic and hypoxic conditions, and presented high selectivity toward non-tumor cell lines. The diethyl and dipropyl analogs, which present favorable physical-chemical and ADME parameters, had the most promising results.
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Affiliation(s)
- Jacopo Vigna
- Laboratory of Bioorganic Chemistry, Department of Physics, University of Trento, Via Sommarive 14, 38123 Trento, Italy
| | - Denise Sighel
- Laboratory of Translational Genomics, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Emanuele Filiberto Rosatti
- Laboratory of Translational Genomics, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Andrea Defant
- Laboratory of Bioorganic Chemistry, Department of Physics, University of Trento, Via Sommarive 14, 38123 Trento, Italy
| | - Michael Pancher
- High Throughput Screening (HTS) and Validation Core Facility, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Viktoryia Sidarovich
- High Throughput Screening (HTS) and Validation Core Facility, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Alessandro Quattrone
- Laboratory of Translational Genomics, Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Ines Mancini
- Laboratory of Bioorganic Chemistry, Department of Physics, University of Trento, Via Sommarive 14, 38123 Trento, Italy
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Wu Y, Xu J, Ding P, Knox WH. Modification of surface morphology of hydrogels due to subsurface femtosecond laser micromachining. APPLIED OPTICS 2021; 60:9799-9808. [PMID: 34807167 DOI: 10.1364/ao.438297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
In this paper, we studied the effects of subsurface femtosecond laser micromachining on surface morphology in hydrogels. Depending on material properties and writing conditions, we found surface bumps when materials were hydrated, and trenches when they were dehydrated, which can be attributed to the localized change in water concentration. Such wavy surfaces by laser-induced refractive index change are not desirable in clinical contact lenses. Therefore, the minimization of surface bumps is necessary to ensure the user eye wearing comfort. In addition, we examined the optical effects of the surface features using interferometry and the surface morphology using profilometry. Finally, we proposed a simplified mechanical model based on localized swelling.
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Tähtinen P, Guella G, Saielli G, Debitus C, Hnawia E, Mancini I. New Sulfur-Containing Polyarsenicals from the New Caledonian Sponge Echinochalina bargibanti. Mar Drugs 2018; 16:md16100382. [PMID: 30314382 PMCID: PMC6212947 DOI: 10.3390/md16100382] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/03/2018] [Accepted: 10/09/2018] [Indexed: 01/28/2023] Open
Abstract
Arsenicin A (C₃H₆As₄O₃) was isolated from the New Caledonian poecilosclerid sponge Echinochalina bargibanti, and described as the first natural organic polyarsenic compound. Further bioguided fractionation of the extracts of this sponge led us to isolate the first sulfur-containing organic polyarsenicals ever found in Nature. These metabolites, called arsenicin B and arsenicin C, are built on a noradamantane-type framework that is characterized by an unusual As⁻As bonding. Extensive NMR measurements, in combination with mass spectra, enabled the assignment of the structure for arsenicin B (C₃H₆As₄S₂) as 2. The scarcity of arsenicin C and its intrinsic chemical instability only allowed the collection of partial spectral data, which prevented the full structural definition. After the extensive computational testing of several putative structures, structure 3 was inferred for arsenicin C (C₃H₆As₄OS) by comparing the experimental and density functional theory (DFT)-calculated ¹H and 13C NMR spectra. Finally, the absolute configurations of 2 and 3 were determined with a combined use of experimental and time-dependent (TD)-DFT calculated electronic circular dichroism (ECD) spectra and observed specific rotations. These findings pose great challenges for the investigation of the biosynthesis of these metabolites and the cycle of arsenic in Nature. Arsenicins B and C showed strong antimicrobial activities, especially against S. aureus, which is comparable to the reference compound gentamycin.
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Affiliation(s)
- Petri Tähtinen
- Department of Chemistry, University of Turku, Vatselankatu 2, 20014 Turku, Finland.
| | - Graziano Guella
- Laboratorio di Chimica Bioorganica, Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123 Trento, Italy.
| | - Giacomo Saielli
- Istituto CNR per la Tecnologia delle Membrane, Unità di Padova, and Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo, 1-35131 Padova, Italy.
| | - Cécile Debitus
- LEMAR, IRD, UBO, CNRS, IFREMER, IUEM, 29280 Plouzané, France.
| | - Edouard Hnawia
- Laboratoire Insulaire du Vivant et de l'Environnement, Université de la Nouvelle-Calédonie: EA 4243 BP 11106, 98802 Nouméa, Nouvelle-Calédonie, France.
| | - Ines Mancini
- Laboratorio di Chimica Bioorganica, Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123 Trento, Italy.
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Venuti V, Stancanelli R, Acri G, Crupi V, Paladini G, Testagrossa B, Tommasini S, Ventura CA, Majolino D. “Host-guest” interactions in Captisol®/Coumestrol inclusion complex: UV–vis, FTIR-ATR and Raman studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.06.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mancini I, Planchestainer M, Defant A. Synthesis and in-vitro anticancer evaluation of polyarsenicals related to the marine sponge derived Arsenicin A. Sci Rep 2017; 7:11548. [PMID: 28912556 PMCID: PMC5599660 DOI: 10.1038/s41598-017-11566-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 08/15/2017] [Indexed: 11/09/2022] Open
Abstract
In the light of the promising bioactivity of the tetraarsenic marine metabolite arsenicin A, the dimethyl analogue 2 and four isomeric methylene homologues (including the natural product itself) were obtained using a one-pot microwave-assisted synthesis, starting from arsenic (III) oxide. Due to the poor diagnostic value of the NMR technique in the structural elucidation of these molecules, they were fully characterized by mass spectrometry and infrared (IR)-spectroscopy, comparing density functional theory (DFT) simulated and experimental spectra. This synthetic procedure provided a fast and efficient access to the cytotoxicity evaluation of organoarsenical leads of the natural hit molecule. From in vitro screening, each tested compound resulted in being more active than the FDA-approved arsenic trioxide, with the most lipophilic molecule in the series showing the best growth inhibition of both leukemia and solid tumor cell lines. These results may open promising perspectives in the development of new more potent and selective arsenical drugs against solid tumors.
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Affiliation(s)
- Ines Mancini
- Università degli studi di Trento, Dipartimento di Fisica, Laboratorio di Chimica Bioorganica, via Sommarive 14, 38123, Povo, Trento, Italy.
| | - Matteo Planchestainer
- Università degli studi di Trento, Dipartimento di Fisica, Laboratorio di Chimica Bioorganica, via Sommarive 14, 38123, Povo, Trento, Italy.,School of Chemistry, University of Nottingham, University Park, Nottingham, NG72RD, UK
| | - Andrea Defant
- Università degli studi di Trento, Dipartimento di Fisica, Laboratorio di Chimica Bioorganica, via Sommarive 14, 38123, Povo, Trento, Italy
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Venuti V, Rossi B, Mele A, Melone L, Punta C, Majolino D, Masciovecchio C, Caldera F, Trotta F. Tuning structural parameters for the optimization of drug delivery performance of cyclodextrin-based nanosponges. Expert Opin Drug Deliv 2016; 14:331-340. [DOI: 10.1080/17425247.2016.1215301] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Lu D, Arulmozhiraja S, Coote ML, Rae AD, Salem G, Willis AC, Wild SB, Benhenda S, Breitenbach VL, de Thé H, Zhai X, Hogg PJ, Dilda PJ. Sulfur Derivatives of the Natural Polyarsenical Arsenicin A: Biologically Active, Organometallic Arsenic–Sulfur Cages Related to the Minerals Realgar and Uzonite. Organometallics 2015. [DOI: 10.1021/om500829y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Di Lu
- Research
School of Chemistry,
College of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
| | - Sundaram Arulmozhiraja
- Research
School of Chemistry,
College of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
| | - Michelle L. Coote
- Research
School of Chemistry,
College of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
| | - A. David Rae
- Research
School of Chemistry,
College of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
| | - Geoff Salem
- Research
School of Chemistry,
College of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
| | - Anthony C. Willis
- Research
School of Chemistry,
College of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
| | - S. Bruce Wild
- Research
School of Chemistry,
College of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
| | - Shirine Benhenda
- University Paris Diderot, Sorbonne Paris
Cité, Hôpital St Louis
1, Avenue Claude Vellefaux, Paris 75475 Cedex 10, France
| | - Valerie Lallemand Breitenbach
- University Paris Diderot, Sorbonne Paris
Cité, Hôpital St Louis
1, Avenue Claude Vellefaux, Paris 75475 Cedex 10, France
| | - Hugues de Thé
- University Paris Diderot, Sorbonne Paris
Cité, Hôpital St Louis
1, Avenue Claude Vellefaux, Paris 75475 Cedex 10, France
| | - Xiaoyi Zhai
- Tumour Metabolism Group,
Adult Cancer Program, Prince of Wales Clinical School and Lowy Cancer
Research Centre, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Philip J. Hogg
- Tumour Metabolism Group,
Adult Cancer Program, Prince of Wales Clinical School and Lowy Cancer
Research Centre, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Pierre J. Dilda
- Tumour Metabolism Group,
Adult Cancer Program, Prince of Wales Clinical School and Lowy Cancer
Research Centre, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
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9
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Venuti V, Rossi B, D'Amico F, Mele A, Castiglione F, Punta C, Melone L, Crupi V, Majolino D, Trotta F, Gessini A, Masciovecchio C. Combining Raman and infrared spectroscopy as a powerful tool for the structural elucidation of cyclodextrin-based polymeric hydrogels. Phys Chem Chem Phys 2015; 17:10274-82. [DOI: 10.1039/c5cp00607d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
UV Raman spectroscopy and infrared spectroscopy have been efficiently implemented for the structural and dynamic elucidation of cyclodextrin-based polymeric hydrogels.
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10
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Mancini I, Defant A. Bioactive Poly(Arsenic) Compounds. BIOMEDICAL INORGANIC POLYMERS 2013; 54:175-95. [DOI: 10.1007/978-3-642-41004-8_7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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11
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Castiglione F, Crupi V, Majolino D, Mele A, Rossi B, Trotta F, Venuti V. Inside New Materials: An Experimental Numerical Approach for the Structural Elucidation of Nanoporous Cross-Linked Polymers. J Phys Chem B 2012; 116:13133-40. [DOI: 10.1021/jp307978e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Francesca Castiglione
- Department of Chemistry, Materials
and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32 20133 Milano, Italy
| | - Vincenza Crupi
- Dipartimento di Fisica e di
Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Domenico Majolino
- Dipartimento di Fisica e di
Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
| | - Andrea Mele
- Department of Chemistry, Materials
and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza L. Da Vinci, 32 20133 Milano, Italy
- CNR- Istituto di Chimica del Riconoscimento Molecolare, via L. Mancinelli
7, 20131 Milano, Italy
| | - Barbara Rossi
- Dipartimento di Informatica, Università di Verona, Strada le Grazie 15, 37134
Verona, Italy
- Dipartimento
di Fisica, Università di Trento,
via Sommarive 14, 38123
Povo, Trento, Italy
| | - Francesco Trotta
- Dipartimento
di Chimica, Università di Torino, Via P. Giuria 7, 10125
Torino, Italy
| | - Valentina Venuti
- Dipartimento di Fisica e di
Scienze della Terra, Università di Messina, Viale Ferdinando Stagno D’Alcontres 31, 98166 Messina, Italy
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Arulmozhiraja S, Coote ML, Lu D, Salem G, Wild SB. Origin of the Unusual Ultraviolet Absorption of Arsenicin A. J Phys Chem A 2011; 115:4530-4. [PMID: 21434669 DOI: 10.1021/jp200956b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Sundaram Arulmozhiraja
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Michelle L. Coote
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Di Lu
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Geoffrey Salem
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - S. Bruce Wild
- Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
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13
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Bagno A. Computing the NMR spectra of the sponge metabolite arsenicin A: when simple becomes difficult. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1719] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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