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Scibetta S, Miceli M, Iuliano M, Stefanuto L, Carbone E, Piscopo P, Petrozza V, Romeo G, Mangino G, Calogero A, Gasperi T, Rosa P. In Vitro Evaluation of the Antioxidant Capacity of 3,3-Disubstituted-3H-benzofuran-2-one Derivatives in a Cellular Model of Neurodegeneration. Life (Basel) 2024; 14:422. [PMID: 38672695 PMCID: PMC11051253 DOI: 10.3390/life14040422] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
Oxidative stress represents a hallmark for many degenerative pathologies of the Central Nervous System. Throughout life, the constant pressure of noxious stimuli and/or episodes of traumatic events may expose the brain to a microenvironment where the non-balanced reactive oxygen species inevitably lead to neuronal loss and cognitive decline. HO-1, a 32 kDa heat-shock protein catalyzing the degradation of heme into carbon monoxide (CO), iron and biliverdin/bilirubin is considered one of the main antioxidant defense mechanisms playing pivotal roles in neuroprotection. Restoring the redox homeostasis is the goal of many natural or synthetic antioxidant molecules pursuing beneficial effects on brain functions. Here, we investigated the antioxidant capacity of four selected benzofuran-2-one derivatives in a cellular model of neurodegeneration represented by differentiated SH-SY5Y cells exposed to catechol-induced oxidative stress. Our main results highlight how all the molecules have antioxidant properties, especially compound 9, showing great abilities in reducing intracellular ROS levels and protecting differentiated SH-SY5Y cells from catechol-induced death. This compound above all seems to boost HO-1 mRNA and perinuclear HO-1 protein isoform expression when cells are exposed to the oxidative insult. Our findings open the way to consider benzofuran-2-ones as a novel and promising adjuvant antioxidant strategy for many neurodegenerative disorders.
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Affiliation(s)
- Sofia Scibetta
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Polo Pontino, 04100 Latina, Italy; (S.S.); (M.I.); (V.P.); (G.R.); (G.M.); (A.C.)
| | - Martina Miceli
- Department of Science, University of Roma Tre, 00146 Rome, Italy; (M.M.); (L.S.)
| | - Marco Iuliano
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Polo Pontino, 04100 Latina, Italy; (S.S.); (M.I.); (V.P.); (G.R.); (G.M.); (A.C.)
| | - Luca Stefanuto
- Department of Science, University of Roma Tre, 00146 Rome, Italy; (M.M.); (L.S.)
| | - Elena Carbone
- Department of Neuroscience, Italian National Institute of Health, 00161 Rome, Italy; (E.C.); (P.P.)
| | - Paola Piscopo
- Department of Neuroscience, Italian National Institute of Health, 00161 Rome, Italy; (E.C.); (P.P.)
| | - Vincenzo Petrozza
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Polo Pontino, 04100 Latina, Italy; (S.S.); (M.I.); (V.P.); (G.R.); (G.M.); (A.C.)
- Istituto Chirurgico Ortopedico Traumatologico (ICOT), 04100 Latina, Italy
| | - Giovanna Romeo
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Polo Pontino, 04100 Latina, Italy; (S.S.); (M.I.); (V.P.); (G.R.); (G.M.); (A.C.)
| | - Giorgio Mangino
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Polo Pontino, 04100 Latina, Italy; (S.S.); (M.I.); (V.P.); (G.R.); (G.M.); (A.C.)
| | - Antonella Calogero
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Polo Pontino, 04100 Latina, Italy; (S.S.); (M.I.); (V.P.); (G.R.); (G.M.); (A.C.)
- Istituto Chirurgico Ortopedico Traumatologico (ICOT), 04100 Latina, Italy
| | - Tecla Gasperi
- Department of Science, University of Roma Tre, 00146 Rome, Italy; (M.M.); (L.S.)
- National Institute of Biostructures and Biosystems (INBB), 00136 Rome, Italy
| | - Paolo Rosa
- Department of Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Polo Pontino, 04100 Latina, Italy; (S.S.); (M.I.); (V.P.); (G.R.); (G.M.); (A.C.)
- Istituto Chirurgico Ortopedico Traumatologico (ICOT), 04100 Latina, Italy
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Lucidi M, Capecchi G, Visaggio D, Gasperi T, Parisi M, Cincotti G, Rampioni G, Visca P, Kolmakov K. Expanding the microbiologist toolbox via new far-red-emitting dyes suitable for bacterial imaging. Microbiol Spectr 2024; 12:e0369023. [PMID: 38095476 PMCID: PMC10782969 DOI: 10.1128/spectrum.03690-23] [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: 10/16/2023] [Accepted: 11/17/2023] [Indexed: 01/13/2024] Open
Abstract
IMPORTANCE By harnessing the versatility of fluorescence microscopy and super-resolution imaging, bacteriologists explore critical aspects of bacterial physiology and resolve bacterial structures sized beyond the light diffraction limit. These techniques are based on fluorophores with profitable photochemical and tagging properties. The paucity of available far-red (FR)-emitting dyes for bacterial imaging strongly limits the multicolor choice of bacteriologists, hindering the possibility of labeling multiple structures in a single experiment. The set of FR fluorophores characterized in this study expands the palette of dyes useful for microbiologists, as they can be used for bacterial LIVE/DEAD staining and for tagging the membranes of viable Escherichia coli and Bacillus subtilis cells. The absence of toxicity makes these dyes suitable for live-cell imaging and allows monitoring of bacterial membrane biogenesis. Moreover, a newly synthesized FR-fluorophore can be employed for imaging bacterial membranes with stimulated emission depletion microscopy, a super-resolution technique capable of increasing the resolving power of conventional microscopes.
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Affiliation(s)
- Massimiliano Lucidi
- Department of Science, Roma Tre University, Rome, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
| | | | - Daniela Visaggio
- Department of Science, Roma Tre University, Rome, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
- IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Tecla Gasperi
- Department of Science, Roma Tre University, Rome, Italy
| | - Miranda Parisi
- Department of Engineering, University Roma Tre, Rome, Italy
| | | | - Giordano Rampioni
- Department of Science, Roma Tre University, Rome, Italy
- IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Paolo Visca
- Department of Science, Roma Tre University, Rome, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
- IRCCS Fondazione Santa Lucia, Rome, Italy
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Moeini SS, Dal Bosco C, Mattoni E, Gasperi T, Gentili A, Tofani D. Direct Solar Oven with and without UV Filter vs. Traditional Oven: Effect on Polyphenolic Antioxidants, Vitamins and Carotenoids of Food. Molecules 2023; 28:molecules28083519. [PMID: 37110752 PMCID: PMC10143948 DOI: 10.3390/molecules28083519] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/07/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
The use of efficient solar ovens can be a way for progressing ecofriendly technologies in the field of food preparation. In most performing direct solar ovens, the sun rays reach the foods directly, therefore, it becomes essential to check whether, in these conditions, foods can retain theirnutraceutical properties (antioxidants, vitamins and carotenoids). In the present research work, to investigate this issue, several foods (vegetables, meats, and a fish sample) were analyzed before and after cooking (traditional oven, solar oven, and solar oven with a UV filter). The content of lipophilic vitamins and carotenoids (analyzed via HPLC-MS) and the variation of total phenolic content (TPC), and antioxidant capacity (via Folin-Ciocalteu and DPPH assays) have evidenced that cooking with the direct solar oven allows to preserve some nutrients (i.e., tocopherols) and, sometimes, to enhance nutraceutical properties of vegetables (for example, solar oven-cooked eggplants showed 38% higher TPC compared to electric oven cooked sample) and meats. The specific isomerization of all-trans-β-carotene to 9-cis was also detected. The use of a UV filter is advisable to avoid UV drawbacks (for instance, a significant carotenoid degradation) without losing the beneficial effects of the other radiations.
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Affiliation(s)
- Seyed Sepehr Moeini
- Department of Science, "Roma Tre" University, Via della Vasca Navale 79, 00146 Rome, Italy
| | - Chiara Dal Bosco
- Department of Chemistry, "Sapienza" University, Piazzale A. Moro, 00185 Rome, Italy
| | - Elena Mattoni
- Department of Science, "Roma Tre" University, Via della Vasca Navale 79, 00146 Rome, Italy
| | - Tecla Gasperi
- Department of Science, "Roma Tre" University, Via della Vasca Navale 79, 00146 Rome, Italy
| | - Alessandra Gentili
- Department of Chemistry, "Sapienza" University, Piazzale A. Moro, 00185 Rome, Italy
| | - Daniela Tofani
- Department of Science, "Roma Tre" University, Via della Vasca Navale 79, 00146 Rome, Italy
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Perrone C, Pomella S, Cassandri M, Pezzella M, Giuliani S, Gasperi T, Porrazzo A, Alisi A, Pastore A, Codenotti S, Fanzani A, Barillari G, Conti LA, De Angelis B, Quintarelli C, Mariottini P, Locatelli F, Marampon F, Rota R, Cervelli M. Spermine oxidase induces DNA damage and sensitizes fusion negative rhabdomyosarcoma cells to irradiation. Front Cell Dev Biol 2023; 11:1061570. [PMID: 36755974 PMCID: PMC9900442 DOI: 10.3389/fcell.2023.1061570] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 01/10/2023] [Indexed: 01/24/2023] Open
Abstract
Rhabdomyosarcoma (RMS) is a pediatric myogenic soft tissue sarcoma that includes fusion-positive (FP) and fusion-negative (FN) molecular subtypes. FP-RMS expresses PAX3-FOXO1 fusion protein and often shows dismal prognosis. FN-RMS shows cytogenetic abnormalities and frequently harbors RAS pathway mutations. Despite the multimodal heavy chemo and radiation therapeutic regimens, high risk metastatic/recurrent FN-RMS shows a 5-year survival less than 30% due to poor sensitivity to chemo-radiotherapy. Therefore, the identification of novel targets is needed. Polyamines (PAs) such as putrescine (PUT), spermidine (SPD) and spermine (SPM) are low-molecular-mass highly charged molecules whose intracellular levels are strictly modulated by specific enzymes. Among the latter, spermine oxidase (SMOX) regulates polyamine catabolism oxidizing SPM to SPD, which impacts cellular processes such as apoptosis and DNA damage response. Here we report that low SMOX levels are associated with a worse outcome in FN-RMS, but not in FP-RMS, patients. Consistently, SMOX expression is downregulated in FN-RMS cell lines as compared to normal myoblasts. Moreover, SMOX transcript levels are reduced FN-RMS cells differentiation, being indirectly downregulated by the muscle transcription factor MYOD. Noteworthy, forced expression of SMOX in two cell lines derived from high-risk FN-RMS: 1) reduces SPM and upregulates SPD levels; 2) induces G0/G1 cell cycle arrest followed by apoptosis; 3) impairs anchorage-independent and tumor spheroids growth; 4) inhibits cell migration; 5) increases γH2AX levels and foci formation indicative of DNA damage. In addition, forced expression of SMOX and irradiation synergize at activating ATM and DNA-PKCs, and at inducing γH2AX expression and foci formation, which suggests an enhancement in DNA damage response. Irradiated SMOX-overexpressing FN-RMS cells also show significant decrease in both colony formation capacity and spheroids growth with respect to single approaches. Thus, our results unveil a role for SMOX as inhibitor of tumorigenicity of FN-RMS cells in vitro. In conclusion, our in vitro results suggest that SMOX induction could be a potential combinatorial approach to sensitize FN-RMS to ionizing radiation and deserve further in-depth studies.
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Affiliation(s)
- Clara Perrone
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy,Department of Science, “Department of Excellence 2018-2022”, University of Rome “Roma Tre”, Rome, Italy
| | - Silvia Pomella
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy,Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, Rome, Italy
| | - Matteo Cassandri
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy,Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
| | - Michele Pezzella
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Stefano Giuliani
- Department of Science, “Department of Excellence 2018-2022”, University of Rome “Roma Tre”, Rome, Italy
| | - Tecla Gasperi
- Department of Science, “Department of Excellence 2018-2022”, University of Rome “Roma Tre”, Rome, Italy,Biostructures and Biosystems National Institute (INBB), Rome, Italy
| | - Antonella Porrazzo
- Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy,Unit of Molecular Genetics of Complex Phenotypes, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Anna Alisi
- Unit of Molecular Genetics of Complex Phenotypes, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Anna Pastore
- Research Unit of Diagnostical and Management Innovations, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Silvia Codenotti
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Alessandro Fanzani
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Giovanni Barillari
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, Rome, Italy
| | - Libenzio Adrian Conti
- Confocal Microscopy Core Facility, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Biagio De Angelis
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Concetta Quintarelli
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy,Department of Clinical Medicine and Surgery, Federico II University of Naples, Naples, Italy
| | - Paolo Mariottini
- Department of Science, “Department of Excellence 2018-2022”, University of Rome “Roma Tre”, Rome, Italy
| | - Franco Locatelli
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy,Department of Life Sciences and Public Health, Catholic University of the Sacred Heart, Rome, Italy
| | - Francesco Marampon
- Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
| | - Rossella Rota
- Department of Hematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy,*Correspondence: Rossella Rota, ; Manuela Cervelli,
| | - Manuela Cervelli
- Department of Science, “Department of Excellence 2018-2022”, University of Rome “Roma Tre”, Rome, Italy,*Correspondence: Rossella Rota, ; Manuela Cervelli,
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Fardelli E, Lucidi M, Di Gioacchino M, Bashiri S, Persichetti L, Capecchi G, Gasperi T, Sodo A, Visca P, Capellini G. Bio-physical mechanisms of dehydrating membranes of Acinetobacter baumannii linked to drought-resistance. Biochim Biophys Acta Biomembr 2022; 1864:184045. [PMID: 36108779 DOI: 10.1016/j.bbamem.2022.184045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/29/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
Acinetobacter baumanni, is an opportunistic nosocomial multi-drug resistant bacterium, which represents a threat for human health. This pathogen is able to persist in intensive care units thanks to its extraordinary resistance towards dehydration, whose mechanisms are unknown and enable it to easily spread through surfaces, contaminating also medical devices. In this article we reveal, with a multimodal approach, based on μ-R Spectroscopy, Gas Chromatography coupled to Mass Spectroscopy, Atomic Force Microscopy and Fluorescence Recovery After Photobleaching, the bio-physical mechanisms that the membrane of two A. baumannii strains undergoes during dehydration. Showing a substantial decoupling of the phase transition from liquid crystalline to gel phase from evidence of cell lysis. Such decoupling may be the core of the resistance of A. baumannii against dehydration and highlights the different ability to resist to drought between strains.
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Affiliation(s)
- Elisa Fardelli
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy.
| | - Massimiliano Lucidi
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy
| | - Michael Di Gioacchino
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy
| | - Shadi Bashiri
- CNR, NEST, Istituto Nanoscienze, P.zza S. Silvestro, 12, Pisa, 56127, Italy
| | - Luca Persichetti
- University of Tor Vergata, Department of physics, Via della Ricerca Scientifica, 1, Rome, 00133, Italy
| | - Giulia Capecchi
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy
| | - Tecla Gasperi
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy; National Institute of Biostructures and Biosystems (INBB), Viale delle Medaglie d'Oro, 305, Rome, 00136, Italy
| | - Armida Sodo
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy
| | - Paolo Visca
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy; Santa Lucia Foundation IRCCS, Via Ardeatina, 306/354, Rome, 00179, Italy
| | - Giovanni Capellini
- University of Roma Tre, Department of Science, Viale G. Marconi, 446, Rome, 00146, Italy
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Molfini M, Stefanuto L, Gisondi S, Gasperi T, Di Giulio A, Mancini E, Bologna MA. New Evidence of Canthariphily: Tilloidea transversalis (Coleoptera: Cleridae) Sequestering Cantharidin From Lydus trimaculatus (Coleoptera: Meloidae). J Insect Sci 2022; 22:6618873. [PMID: 35762395 PMCID: PMC9237715 DOI: 10.1093/jisesa/ieac035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Indexed: 05/10/2023]
Abstract
Cantharidin (CTD) is a defensive compound autogenously and exclusively produced by two phylogenetically related beetle families: Meloidae and Oedemeridae. Although this molecule usually acts as a strong deterrent against potential predators and parasites, some arthropod species, collectively named 'canthariphilous species', are attracted to CTD. Some species can sequester CTD from the CTD-producing species, using it as a chemical defense against enemies. The present paper focuses on the first-ever description of canthariphilous interactions between a checkered beetle species (Coleoptera: Cleridae) and a CTD -producing species. Field observations revealed individuals of the phytophagous beetle Tilloidea transversalis (Charpentier, 1825) (Coleoptera: Cleridae) biting individuals of the blister beetle Lydus trimaculatus (Fabricius, 1775) (Coleoptera: Meloidae). Laboratory behavioral experiments followed to verify if this peculiar behavior of T. transversalis also occurs on other co-occurring species. Moreover, chemical analyses were performed to assess whether T. transversalis can sequester CTD. Our results show that T. transversalis only attacks CTD-producing species. However, while chemical analyses prove that T. transversalis can sequester CTD from the hemolymph of L. trimaculatus, some clues (based on a CTD-baited traps sampling) suggest that this beetle, contrarily to other canthariphilous species, does not appear to show a high attraction to pure synthetic CTD. Thus, other unknown signals, alone or in combination with CTD, could be implicated in triggering the canthariphilous behaviors of T. transversalis.
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Affiliation(s)
| | - Luca Stefanuto
- Department of Science, University of Roma Tre, Viale Marconi 446, 00146 Rome, Italy
| | - Silvia Gisondi
- Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di Ricerca Difesa e Certificazione, Via di Lanciola 12/a, 50125 Firenze, Italy
| | - Tecla Gasperi
- Department of Science, University of Roma Tre, Viale Marconi 446, 00146 Rome, Italy
| | - Andrea Di Giulio
- Department of Science, University of Roma Tre, Viale Marconi 446, 00146 Rome, Italy
| | - Emiliano Mancini
- Department of Biology and Biotechnologies ‘Charles Darwin’, Sapienza University, Viale dell’Università 32, 00185 Rome, Italy
| | - Marco A Bologna
- Department of Science, University of Roma Tre, Viale Marconi 446, 00146 Rome, Italy
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Fratini E, Salvemini M, Lombardo F, Muzzi M, Molfini M, Gisondi S, Roma E, D'Ezio V, Persichini T, Gasperi T, Mariottini P, Di Giulio A, Bologna MA, Cervelli M, Mancini E. Unraveling the role of male reproductive tract and haemolymph in cantharidin-exuding Lydus trimaculatus and Mylabris variabilis (Coleoptera: Meloidae): a comparative transcriptomics approach. BMC Genomics 2021; 22:808. [PMID: 34749651 PMCID: PMC8576976 DOI: 10.1186/s12864-021-08118-8] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 10/23/2021] [Indexed: 12/13/2022] Open
Abstract
Background Meloidae (blister beetles) are known to synthetize cantharidin (CA), a toxic and defensive terpene mainly stored in male accessory glands (MAG) and emitted outward through reflex-bleeding. Recent progresses in understanding CA biosynthesis and production organ(s) in Meloidae have been made, but the way in which self-protection is achieved from the hazardous accumulation and release of CA in blister beetles has been experimentally neglected. To provide hints on this pending question, a comparative de novo assembly transcriptomic approach was performed by targeting two tissues where CA is largely accumulated and regularly circulates in Meloidae: the male reproductive tract (MRT) and the haemolymph. Differential gene expression profiles in these tissues were examined in two blister beetle species, Lydus trimaculatus (Fabricius, 1775) (tribe Lyttini) and Mylabris variabilis (Pallas, 1781) (tribe Mylabrini). Upregulated transcripts were compared between the two species to identify conserved genes possibly involved in CA detoxification and transport. Results Based on our results, we hypothesize that, to avoid auto-intoxication, ABC, MFS or other solute transporters might sequester purported glycosylated CA precursors into MAG, and lipocalins could bind CA and mitigate its reactivity when released into the haemolymph during the autohaemorrhaging response. We also found an over-representation in haemolymph of protein-domains related to coagulation and integument repairing mechanisms that likely reflects the need to limit fluid loss during reflex-bleeding. Conclusions The de novo assembled transcriptomes of L. trimaculatus and M. variabilis here provided represent valuable genetic resources to further explore the mechanisms employed to cope with toxicity of CA in blister beetle tissues. These, if revealed, might help conceiving safe and effective drug-delivery approaches to enhance the use of CA in medicine. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08118-8.
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Affiliation(s)
| | - Marco Salvemini
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Fabrizio Lombardo
- Department of Public Health and Infectious Diseases, Sapienza University, Rome, Italy
| | - Maurizio Muzzi
- Department of Sciences, University of Roma Tre, Rome, Italy
| | - Marco Molfini
- Department of Sciences, University of Roma Tre, Rome, Italy
| | - Silvia Gisondi
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza University, Rome, Italy.,Natural History Museum of Denmark, Copenhagen, Denmark
| | - Elia Roma
- Department of Sciences, University of Roma Tre, Rome, Italy
| | | | | | - Tecla Gasperi
- Department of Sciences, University of Roma Tre, Rome, Italy
| | | | | | | | | | - Emiliano Mancini
- Department of Biology and Biotechnologies "Charles Darwin", Sapienza University, Rome, Italy.
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Corsi P, González García Á, Roma E, Gasperi T, Capone B. Coarse graining and adsorption in bottlebrush-colloid mixtures. Soft Matter 2021; 17:3681-3687. [PMID: 33683278 DOI: 10.1039/d1sm00141h] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We study the adsorption properties in bottlebrush/colloid binary mixtures by combining scaling theories, theoretical predictions, self-consistent field computations (SCFC), and molecular dynamics simulations. In particular, we focus on adsorption in the case in which an attraction is set between the two species, by analysing the solution properties for a range of interactions and the size ratio between colloids and bottlebrushes, in the case in which colloids are smaller than the macromolecules. We show that the onset of adsorption is dominated by the local properties of the adsorbing guest particle. This allows us to use the local similarity between a cylindrical bottlebrush and a spherical star polymer to predict the region of the parameter space in which the adsorption takes place. By employing simple scaling arguments, we thus extend the analytical results on the adsorption obtained for binary mixtures of star polymers/colloid nanoparticles. We then validate our predictions with molecular dynamics simulations. Moreover, by means of SCFC, we assess the adsorption-to-depletion transition of nanoparticles in polymeric bottlebrushes. Our results pave the road towards a smart rational design and coarse-graining of adsorbing/releasing systems, where an elongated shape might play an important role.
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Affiliation(s)
- Pietro Corsi
- Dipartimento di Scienze, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146, Roma, Italy.
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9
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Roma E, Corsi P, Willinger M, Leitner NS, Zirbs R, Reimhult E, Capone B, Gasperi T. Theoretical and Experimental Design of Heavy Metal-Mopping Magnetic Nanoparticles. ACS Appl Mater Interfaces 2021; 13:1386-1397. [PMID: 33389993 PMCID: PMC8021223 DOI: 10.1021/acsami.0c17759] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Herein, we show a comprehensive experimental, theoretical, and computational study aimed at designing macromolecules able to adsorb a cargo at the nanoscale. Specifically, we focus on the adsorption properties of star diblock copolymers, i.e., macromolecules made by a number f of H-T diblock copolymer arms tethered on a central core; the H monomeric heads, which are closer to the tethering point, are attractive toward a specific target, while the T monomeric tails are neutral to the cargo. Experimentally, we exploited the adaptability of poly(2-oxazoline)s (POxs) to realize block copolymer-coated nanoparticles with a proper functionalization able to interact with heavy metals and show or exhibit a thermoresponsive behavior in aqueous solution. We here present the synthesis and analysis of the properties of a high molecular mass block copolymer featured by (i) a polar side chain, capable of exploiting electrostatic and hydrophilic interaction with a predetermined cargo, and (ii) a thermoresponsive scaffold, able to change the interaction with the media by tuning the temperature. Afterward, the obtained polymers were grafted onto iron oxide nanoparticles and the thermoresponsive properties were investigated. Through isothermal titration calorimetry, we then analyzed the adsorption properties of the synthesized superparamagnetic nanoparticles for heavy metal ions in aqueous solution. Additionally, we use a combination of scaling theories and simulations to link equilibrium properties of the system to a prediction of the loading properties as a function of size ratio and effective interactions between the considered species. The comparison between experimental results on adsorption and theoretical prediction validates the whole design process.
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Affiliation(s)
- Elia Roma
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Pietro Corsi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Max Willinger
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Nikolaus Simon Leitner
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Ronald Zirbs
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Erik Reimhult
- Department
of Material Sciences and Process Engineering, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Strasse 82, A-1190 Vienna, Austria
| | - Barbara Capone
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
| | - Tecla Gasperi
- Dipartimento
di Scienze, Universitá degli Studi
Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
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10
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Muzzi M, Di Giulio A, Mancini E, Fratini E, Cervelli M, Gasperi T, Mariottini P, Persichini T, Bologna MA. The male reproductive accessory glands of the blister beetle Meloe proscarabaeus Linnaeus, 1758 (Coleoptera: Meloidae): Anatomy and ultrastructure of the cantharidin-storing organs. Arthropod Struct Dev 2020; 59:100980. [PMID: 32829176 DOI: 10.1016/j.asd.2020.100980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Blister beetles owe their name to their ability to release cantharidin, a blistering terpene, the highest concentration of which is retained in male accessory glands. The anatomy and ultrastructure of the three pairs of male reproductive accessory glands and the glandular region of the two vasa deferentia of Meloe proscarabaeus were investigated using light, electron and ion beam microscopy. All of the mesodermal glands here analysed share a common structural organization with an outer muscular layer and an inner glandular epithelium facing a broad lumen in which the secretory products are released. Developed rough endoplasmic reticulum, Golgi systems, abundant mitochondria, numerous secretory vesicles and a microvillated apical membrane are commonly found in the cells of different glandular epithelia, suggesting that all accessory gland pairs as well as the vasa deferentia are involved in an active synthesis. Nevertheless, each pair of glands appears specialized in the production of a specific set of substances, as suggested by the peculiarities in cellular ultrastructure and by the different aspect of the secretions stored in their glandular lumen. The above cited features of male accessory glands of M. proscarabaeus are compared with those of other beetles and some hints on their potential role in producing and/or concentrating cantharidin are provided.
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Affiliation(s)
- Maurizio Muzzi
- Department of Science, University Roma Tre, Rome, Italy; Laboratorio Interdipartimentale di Microscopia Elettronica (LIME), University Roma Tre, Rome, Italy
| | - Andrea Di Giulio
- Department of Science, University Roma Tre, Rome, Italy; Laboratorio Interdipartimentale di Microscopia Elettronica (LIME), University Roma Tre, Rome, Italy.
| | - Emiliano Mancini
- Department of Biology and Biotechnology "C. Darwin", "Sapienza" University of Rome, Rome, Italy
| | | | | | - Tecla Gasperi
- Department of Science, University Roma Tre, Rome, Italy
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11
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Roma E, Mattoni E, Lupattelli P, Moeini SS, Gasperi T, Bernini R, Incerpi S, Tofani D. New Dihydroxytyrosyl Esters from Dicarboxylic Acids: Synthesis and Evaluation of the Antioxidant Activity In Vitro (ABTS) and in Cell-Cultures (DCF Assay). Molecules 2020; 25:molecules25143135. [PMID: 32659910 PMCID: PMC7397168 DOI: 10.3390/molecules25143135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 11/17/2022] Open
Abstract
New dihydroxytyrosyl esters 2a, 2c–2j of dicarboxylic acids were synthesized from methyl orthoformate protected hydroxytyrosol 3 and diacyl chlorides. New compounds were characterized (HRMS, FT-IR, 1H- and 13C-NMR), and tested for antioxidant activity both in vitro (ABTS) and on L6 myoblasts and THP1 leukemic monocytes cell culture by DCF assay. According to the ABTS assay, compounds 2a, 2c–2j showed a TEAC value of antioxidant capacity up to twice that of Trolox. Very high or complete ROS protections were obtained in the cell environment where lipophilicity and rigidity of dicarboxylic structure seem to facilitate the antioxidant effect. MTT assay and proliferation test were used for assessment of cell viability. These compounds can be envisaged as a new class of preservatives for food or cosmetic products.
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Affiliation(s)
- Elia Roma
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146 Rome, Italy; (E.R.); (S.S.M.); (T.G.); (S.I.)
| | - Elena Mattoni
- Centro Interdipartimentale per la Didattica Chimica (CeDiC), Via della Vasca Navale 79, 00146 Roma, Italy;
| | - Paolo Lupattelli
- Department of Science, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy;
| | - Seyed Sepehr Moeini
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146 Rome, Italy; (E.R.); (S.S.M.); (T.G.); (S.I.)
| | - Tecla Gasperi
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146 Rome, Italy; (E.R.); (S.S.M.); (T.G.); (S.I.)
- Centro Interdipartimentale per la Didattica Chimica (CeDiC), Via della Vasca Navale 79, 00146 Roma, Italy;
| | - Roberta Bernini
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via S. Camillo de Lellis, 01100 Viterbo, Italy;
| | - Sandra Incerpi
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146 Rome, Italy; (E.R.); (S.S.M.); (T.G.); (S.I.)
| | - Daniela Tofani
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146 Rome, Italy; (E.R.); (S.S.M.); (T.G.); (S.I.)
- Centro Interdipartimentale per la Didattica Chimica (CeDiC), Via della Vasca Navale 79, 00146 Roma, Italy;
- Correspondence: ; Tel.: +39-06-5733-3371
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Gasperi T, Tortora C, Miceli M, Steiniger F, Walde P, Stano P. Cover Feature: Organocatalytic Stereoselective Epoxidation of α-alkylidene Oxindoles Using α,α-diphenylprolinol in Liposome Membrane (ChemCatChem 3/2019). ChemCatChem 2019. [DOI: 10.1002/cctc.201900112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tecla Gasperi
- Dipartimento di Scienze; Università degli Studi di Roma Tre; via della Vasca Navale 79 Roma 00146 Italy
| | - Carola Tortora
- Dipartimento di Scienze; Università degli Studi di Roma Tre; via della Vasca Navale 79 Roma 00146 Italy
| | - Martina Miceli
- Dipartimento di Scienze; Università degli Studi di Roma Tre; via della Vasca Navale 79 Roma 00146 Italy
| | - Frank Steiniger
- Center for Electron Microscopy; University Hospital Jena; Ziegelmühlenweg 1 Jena 07743 Germany
| | - Peter Walde
- Department of Materials; ETH Zurich; Vladimir-Prelog-Weg 5 Zurich 8093 Switzerland
| | - Pasquale Stano
- Dipartimento di Scienze; Università degli Studi di Roma Tre; via della Vasca Navale 79 Roma 00146 Italy
- Current Address: Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali; Università del Salento Campus Ecotekne; S.P. 6 Lecce-Monteroni Lecce 73100 Italy
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13
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Corsi P, Roma E, Gasperi T, Bruni F, Capone B. Exploiting scaling laws for designing polymeric bottle brushes: a theoretical coarse-graining for homopolymeric branched polymers. Phys Chem Chem Phys 2019; 21:14873-14878. [PMID: 31232411 DOI: 10.1039/c9cp01316d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bottle brushes are polymeric macromolecules made of a linear polymeric backbone grafted with side chains. The choice of the grafting density σg, the length ns the grafted side chains and their chemical nature fully determines the properties of each macromolecule, such as its elasticity and its folding behaviour. Typically, experimental bottle brushes are systems made of tens of thousands of monomeric units, rendering a computational approach extremely expensive, especially in the case of bottle brush solutions. A proper coarse graining description of these macromolecules thus appears essential. We present here a theoretical approach able to develop a general, transferable and analytical multi-scale coarse graining of homopolymeric bottle brush polymers under good solvent conditions. Starting from scaling theories, each macromolecule is mapped onto a chain of tethered star polymers, whose effective potential is known from scaling predictions, computational and experimental validations and can be expressed as a function of the number of arms f, and the length na of each arm. Stars are then tethered to one another and the effective potential between them is shown to only depend on the key parameters of the original bottle brush polymer (σg, ns). The generalised form of the effective potential is then used to reproduce properties of the macromolecules obtained both with scaling theories and with simulations. The general form of the effective potentials derived in the current study allows a theoretical and computational description of the properties of homopolymeric bottle brush polymers for all grafting densities and all lengths of both backbone and grafted arms, opening the path for a manifold of applications.
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Affiliation(s)
- Pietro Corsi
- Dipartimento di Scienze, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146, Roma, Italy.
| | - Elia Roma
- Dipartimento di Scienze, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146, Roma, Italy.
| | - Tecla Gasperi
- Dipartimento di Scienze, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146, Roma, Italy.
| | - Fabio Bruni
- Dipartimento di Scienze, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146, Roma, Italy.
| | - Barbara Capone
- Dipartimento di Scienze, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146, Roma, Italy.
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14
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Tomai P, Martinelli A, Gasperi T, Bianchi M, Purcaro V, Teofili L, Papacci P, Cori MS, Vento G, Curini R, Fanali S, Gentili A. Rotating-disc micro-solid phase extraction of F2-isoprostanes from maternal and cord plasma by using oxidized buckypaper as sorbent membrane. J Chromatogr A 2018; 1586:30-39. [PMID: 30563692 DOI: 10.1016/j.chroma.2018.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 09/28/2018] [Revised: 12/03/2018] [Accepted: 12/09/2018] [Indexed: 01/08/2023]
Abstract
This paper describes the development of an original micro-solid phase extraction device and its evaluation for the isolation of F2-isoprostanes (F2-IsoPs) from cord and maternal plasma samples. The unit is very simple and consists in a rotating disc (1.8 cm diameter) of oxidized buckypaper (BP), enwrapped in a polypropylene mesh pouch. Even if the selected F2-IsoPs have logP and pKa values that make them suitable candidates for their sorption on BP, several parameters were optimized to maximize recoveries: time of adsorption and desorption; stirring speed; volume, pH and ionic strength of the sample; type, volume, and fractions of the elution solvent; oxidation grade of BP. Among all, the last one was crucial in affecting extraction yields because of the analyte interactions with polar functionalities, introduced by a preliminary oxidative acid treatment. The investigation established the optimal oxidation time and highlighted the pros and cons of the acid activation step. All extracts were analyzed by means of liquid chromatography-tandem mass spectrometry (LC-MS/MS). Validation was performed according to the main FDA guidelines for bioanalytical methods. Depending on the spike level and analyte, recoveries ranged between 30 and 120% with precision and accuracy values lower than 20%. Quantitative analysis was accomplished by matrix-matched calibration curves whose determination coefficients were higher than 0.95. Lower limit of quantitation (LLOQ) spanned the range 2.45-6.77 μg L-1. The validated method was applied to the analysis of eight pairs of mother/child plasma samples, revealing the presence of 8-iso-15-keto-PGF2α and 8-iso-PGE2 at a concentration of about 10 μg L-1 in most cord plasma samples of preterm newborns.
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Affiliation(s)
- Pierpaolo Tomai
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy
| | - Andrea Martinelli
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy
| | - Tecla Gasperi
- Department of Science, Roma Tre University, Via della Vasca Navale 79, 00146, Rome, Italy
| | - Maria Bianchi
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Velia Purcaro
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Luciana Teofili
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Patrizia Papacci
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Maria Sofia Cori
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Giovanni Vento
- Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Italy
| | - Roberta Curini
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy
| | - Salvatore Fanali
- PhD School in Natural Science and Engineering, University of Verona, 37129 Verona, Italy
| | - Alessandra Gentili
- Department of Chemistry, University of Rome "La Sapienza", Piazzale Aldo Moro n°5, P.O. Box 34, Posta 62, 00185, Roma, Italy.
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15
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Furlotti G, Alisi MA, Cazzolla N, Ceccacci F, Garrone B, Gasperi T, La Bella A, Leonelli F, Loreto MA, Magarò G, Mangano G, Bettolo RM, Masini E, Miceli M, Migneco LM, Vitiello M. Targeting Serotonin 2A and Adrenergic α 1 Receptors for Ocular Antihypertensive Agents: Discovery of 3,4-Dihydropyrazino[1,2-b]indazol-1(2H)-one Derivatives. ChemMedChem 2018; 13:1597-1607. [PMID: 29873449 DOI: 10.1002/cmdc.201800199] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 03/28/2018] [Revised: 05/18/2018] [Indexed: 01/29/2023]
Abstract
Glaucoma affects millions of people worldwide and causes optic nerve damage and blindness. The elevation of the intraocular pressure (IOP) is the main risk factor associated with this pathology, and decreasing IOP is the key therapeutic target of current pharmacological treatments. As potential ocular hypotensive agents, we studied compounds that act on two receptors (serotonin 2A and adrenergic α1 ) linked to the regulation of aqueous humour dynamics. Herein we describe the design, synthesis, and pharmacological profiling of a series of novel bicyclic and tricyclic N2-alkyl-indazole-amide derivatives. This study identified a 3,4-dihydropyrazino[1,2-b]indazol-1(2H)-one derivative with potent serotonin 2A receptor antagonism, >100-fold selectivity over other serotonin subtype receptors, and high affinity for the α1 receptor. Moreover, upon local administration, this compound showed superior ocular hypotensive action in vivo relative to the clinically used reference compound timolol.
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Affiliation(s)
- Guido Furlotti
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A., Piazzale della stazione snc, 00071, S. Palomba-Pomezia (Rome), Italy
| | - Maria Alessandra Alisi
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A., Piazzale della stazione snc, 00071, S. Palomba-Pomezia (Rome), Italy
| | - Nicola Cazzolla
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A., Piazzale della stazione snc, 00071, S. Palomba-Pomezia (Rome), Italy
| | - Francesca Ceccacci
- Chemistry Department "S. Cannizzaro", University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy.,Current affiliation: Istituto di Metodologie Chimiche-CNR, Unità Organizzativa di Supporto, Sede di Roma, Università degli Studi di Roma "La Sapienza", P. le Aldo Moro 5, 00185, Rome, Italy)
| | - Beatrice Garrone
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A., Piazzale della stazione snc, 00071, S. Palomba-Pomezia (Rome), Italy
| | - Tecla Gasperi
- Department of Science, Section of Nanoscience and Nanotechnology, University of Roma Tre, via della Vasca Navale 79, 00146, Rome, Italy
| | - Angela La Bella
- Chemistry Department "S. Cannizzaro", University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy
| | - Francesca Leonelli
- Chemistry Department "S. Cannizzaro", University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy.,Dipartimento di Biologia Ambientale, University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy
| | - Maria Antonietta Loreto
- Chemistry Department "S. Cannizzaro", University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy
| | - Gabriele Magarò
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A., Piazzale della stazione snc, 00071, S. Palomba-Pomezia (Rome), Italy
| | - Giorgina Mangano
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A., Piazzale della stazione snc, 00071, S. Palomba-Pomezia (Rome), Italy
| | - Rinaldo Marini Bettolo
- Chemistry Department "S. Cannizzaro", University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy
| | - Emanuela Masini
- Departments of NEUROFARBA, Section of Pharmacology, University of Florence, Viale Pieraccini 6, 50139, Florence, Italy
| | - Martina Miceli
- Department of Science, Section of Nanoscience and Nanotechnology, University of Roma Tre, via della Vasca Navale 79, 00146, Rome, Italy
| | - Luisa Maria Migneco
- Chemistry Department "S. Cannizzaro", University of Rome "La Sapienza", P.le Aldo Moro 5, 00185, Rome, Italy
| | - Marco Vitiello
- Angelini RR&D (Research, Regulatory & Development), Angelini S.p.A., Piazzale della stazione snc, 00071, S. Palomba-Pomezia (Rome), Italy
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Chronopoulou L, Daniele M, Perez V, Gentili A, Gasperi T, Lupi S, Palocci C. A physico-chemical approach to the study of genipin crosslinking of biofabricated peptide hydrogels. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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17
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Miceli M, Mazziotta A, Palumbo C, Roma E, Tosi E, Longhi G, Abbate S, Lupattelli P, Mazzeo G, Gasperi T. Asymmetric Synthesis of Spirooxindoles via Nucleophilic Epoxidation Promoted by Bifunctional Organocatalysts. Molecules 2018; 23:molecules23020438. [PMID: 29462935 PMCID: PMC6017607 DOI: 10.3390/molecules23020438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 02/12/2018] [Accepted: 02/12/2018] [Indexed: 11/16/2022] Open
Abstract
Taking into account the postulated reaction mechanism for the organocatalytic epoxidation of electron-poor olefins developed by our laboratory, we have investigated the key factors able to positively influence the H-bond network installed inside the substrate/catalyst/oxidizing agent. With this aim, we have: (i) tested a few catalysts displaying various effects that noticeably differ in terms of steric hindrance and electron demand; (ii) employed α-alkylidene oxindoles decorated with different substituents on the aromatic ring (11a-g), the exocylic double bond (11h-l), and the amide moiety (11m-v). The observed results suggest that the modification of the electron-withdrawing group (EWG) weakly conditions the overall outcomes, and conversely a strong influence is unambiguously ascribable to either the N-protected or N-unprotected lactam framework. Specifically, when the NH free substrates (11m-u) are employed, an inversion of the stereochemical control is observed, while the introduction of a Boc protecting group affords the desired product 12v in excellent enantioselectivity (97:3 er).
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Affiliation(s)
- Martina Miceli
- Dipartimento di Scienze- Sezione di Nanoscienze e Nanotecnologie, Università degli Studi di Roma Tre, V.le G. Marconi 446, I-00146 Rome, Italy.
| | - Andrea Mazziotta
- Dipartimento di Scienze- Sezione di Nanoscienze e Nanotecnologie, Università degli Studi di Roma Tre, V.le G. Marconi 446, I-00146 Rome, Italy.
| | - Chiara Palumbo
- Dipartimento di Scienze- Sezione di Nanoscienze e Nanotecnologie, Università degli Studi di Roma Tre, V.le G. Marconi 446, I-00146 Rome, Italy.
| | - Elia Roma
- Dipartimento di Scienze- Sezione di Nanoscienze e Nanotecnologie, Università degli Studi di Roma Tre, V.le G. Marconi 446, I-00146 Rome, Italy.
| | - Eleonora Tosi
- Dipartimento di Scienze- Sezione di Nanoscienze e Nanotecnologie, Università degli Studi di Roma Tre, V.le G. Marconi 446, I-00146 Rome, Italy.
| | - Giovanna Longhi
- Dipartimento di Medicina Molecolare e Traslazionale (DMMT), Università di Brescia, viale Europa 11, 25123 Brescia, Italy.
| | - Sergio Abbate
- Dipartimento di Medicina Molecolare e Traslazionale (DMMT), Università di Brescia, viale Europa 11, 25123 Brescia, Italy.
| | - Paolo Lupattelli
- Dipartimento di Scienze, Università degli Studi della Basilicata, via dell'Ateneo Lucano 10, I-85100 Potenza, Italy.
| | - Giuseppe Mazzeo
- Dipartimento di Medicina Molecolare e Traslazionale (DMMT), Università di Brescia, viale Europa 11, 25123 Brescia, Italy.
| | - Tecla Gasperi
- Dipartimento di Scienze- Sezione di Nanoscienze e Nanotecnologie, Università degli Studi di Roma Tre, V.le G. Marconi 446, I-00146 Rome, Italy.
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Ascenzi P, Ciaccio C, Gasperi T, Pesce A, Caporaso L, Coletta M. Hydroxylamine-induced oxidation of ferrous carbonylated truncated hemoglobins from Mycobacterium tuberculosis and Campylobacter jejuni is limited by carbon monoxide dissociation. J Biol Inorg Chem 2017. [PMID: 28646425 DOI: 10.1007/s00775-017-1476-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 12/22/2022]
Abstract
Hydroxylamine (HA) is an oxidant of ferrous globins and its action has been reported to be inhibited by CO, even though this mechanism has not been clarified. Here, kinetics of the HA-mediated oxidation of ferrous carbonylated Mycobacterium tuberculosis truncated hemoglobin N and O (Mt-trHbN(II)-CO and Mt-trHbO(II)-CO, respectively) and Campylobacter jejuni truncated hemoglobin P (Cj-trHbP(II)-CO), at pH 7.2 and 20.0 °C, are reported. Mixing Mt-trHbN(II)-CO, Mt-trHbO(II)-CO, and Cj-trHbP(II)-CO solution with the HA solution brings about absorption spectral changes reflecting the disappearance of the ferrous carbonylated derivatives with the concomitant formation of the ferric species. HA oxidizes irreversibly Mt-trHbN(II)-CO, Mt-trHbO(II)-CO, and Cj-trHbP(II)-CO with the 1:2 stoichiometry. The dissociation of CO turns out to be the rate-limiting step for the oxidation of Mt-trHbN(II)-CO, Mt-trHbO(II)-CO, and Cj-trHbP(II)-CO by HA. Values of the second-order rate constant for HA-mediated oxidation of Mt-trHbN(II)-CO, Mt-trHbO(II)-CO, and Cj-trHbP(II)-CO range between 8.8 × 104 and 8.6 × 107 M-1 s-1, reflecting different structural features of the heme distal pocket. This study (1) demonstrates that the inhibitory effect of CO is linked to the dissociation of this ligand, giving a functional basis to previous studies, (2) represents the first comparative investigation of the oxidation of ferrous carbonylated bacterial 2/2 globins belonging to the N, O, and P groups by HA, (3) casts light on the correlation between kinetics of HA-mediated oxidation and carbonylation of globins, and (4) focuses on structural determinants modulating the HA-induced oxidation process.
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Affiliation(s)
- Paolo Ascenzi
- Interdepartmental Laboratory for Electron Microscopy, Roma Tre University, 00146, Rome, Italy.
| | - Chiara Ciaccio
- Department of Clinical Sciences and Translational Medicine, University of Roma "Tor Vergata", 00133, Rome, Italy.,Interuniversity Consortium for the Research on Chemistry of Metals in Biological Systems, 70126, Bari, Italy
| | - Tecla Gasperi
- Department of Sciences, Roma Tre University, 00146, Rome, Italy
| | - Alessandra Pesce
- Department of Physics, University of Genova, 16146, Genoa, Italy
| | - Lucia Caporaso
- Department of Mathematics and Physics, Roma Tre University, 00146, Rome, Italy
| | - Massimo Coletta
- Department of Clinical Sciences and Translational Medicine, University of Roma "Tor Vergata", 00133, Rome, Italy.,Interuniversity Consortium for the Research on Chemistry of Metals in Biological Systems, 70126, Bari, Italy
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Wieczorek R, Adamala K, Gasperi T, Polticelli F, Stano P. Small and Random Peptides: An Unexplored Reservoir of Potentially Functional Primitive Organocatalysts. The Case of Seryl-Histidine. Life (Basel) 2017; 7:E19. [PMID: 28397774 PMCID: PMC5492141 DOI: 10.3390/life7020019] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 02/05/2017] [Revised: 04/03/2017] [Accepted: 04/05/2017] [Indexed: 12/11/2022] Open
Abstract
Catalysis is an essential feature of living systems biochemistry, and probably, it played a key role in primordial times, helping to produce more complex molecules from simple ones. However, enzymes, the biocatalysts par excellence, were not available in such an ancient context, and so, instead, small molecule catalysis (organocatalysis) may have occurred. The best candidates for the role of primitive organocatalysts are amino acids and short random peptides, which are believed to have been available in an early period on Earth. In this review, we discuss the occurrence of primordial organocatalysts in the form of peptides, in particular commenting on reports about seryl-histidine dipeptide, which have recently been investigated. Starting from this specific case, we also mention a peptide fragment condensation scenario, as well as other potential roles of peptides in primordial times. The review actually aims to stimulate further investigation on an unexplored field of research, namely one that specifically looks at the catalytic activity of small random peptides with respect to reactions relevant to prebiotic chemistry and early chemical evolution.
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Affiliation(s)
- Rafal Wieczorek
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland.
| | - Katarzyna Adamala
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Tecla Gasperi
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146 Rome, Italy.
| | - Fabio Polticelli
- Department of Science, Roma Tre University, Viale G. Marconi 446, 00146 Rome, Italy.
- National Institute of Nuclear Physics, Roma Tre Section, Via della Vasca Navale 84, 00146 Rome, Italy.
| | - Pasquale Stano
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Campus Ecotekne (S.P. 6 Lecce-Monteroni), 73100 Lecce, Italy.
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Gasperi T, Vetica F, de Figueiredo R, Orsini M, Tofani D. Recent Advances in Organocatalytic Cascade Reactions toward the Formation of Quaternary Stereocenters. SYNTHESIS-STUTTGART 2015. [DOI: 10.1055/s-0034-1378742] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Tecla Gasperi
- Dipartimento di Scienze, Università degli Studi Roma Tre
| | | | - Renata de Figueiredo
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM-ENSCM, Ecole Nationale Supérieure de Chimie
| | - Monica Orsini
- Dipartimento di Ingeneria, Università degli Studi Roma Tre
| | - Daniela Tofani
- Dipartimento di Scienze, Università degli Studi Roma Tre
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Gentili A, Cafolla A, Gasperi T, Bellante S, Caretti F, Curini R, Fernández VP. Rapid, high performance method for the determination of vitamin K1, menaquinone-4 and vitamin K1 2,3-epoxide in human serum and plasma using liquid chromatography-hybrid quadrupole linear ion trap mass spectrometry. J Chromatogr A 2014; 1338:102-10. [DOI: 10.1016/j.chroma.2014.02.065] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 02/19/2014] [Accepted: 02/20/2014] [Indexed: 10/25/2022]
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Vetica F, Pelosi A, Gambacorta A, Loreto MA, Miceli M, Gasperi T. Catalytic Friedel-Crafts/Lactonization Domino Reaction: Facile Access to 3-Hydroxybenzofuran-2-one Scaffold. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301686] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Tempestilli M, Milano E, D'Offizi G, Montalbano M, D'Avolio A, Gasperi T, Narciso P, Ascenzi P, Pucillo LP. Determination of telaprevir in plasma of HCV-infected patients by HPLC-UV. IUBMB Life 2013; 65:800-5. [DOI: 10.1002/iub.1197] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 05/30/2013] [Accepted: 06/24/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Massimo Tempestilli
- Istituto Nazionale per le Malattie Infettive I.R.C.C.S., “Lazzaro Spallanzani,”; Roma; Italy
| | - Elisa Milano
- Istituto Nazionale per le Malattie Infettive I.R.C.C.S., “Lazzaro Spallanzani,”; Roma; Italy
| | - Gianpiero D'Offizi
- Istituto Nazionale per le Malattie Infettive I.R.C.C.S., “Lazzaro Spallanzani,”; Roma; Italy
| | - Marzia Montalbano
- Istituto Nazionale per le Malattie Infettive I.R.C.C.S., “Lazzaro Spallanzani,”; Roma; Italy
| | - Antonio D'Avolio
- Dipartimento di Scienze Mediche; Clinica Universitaria di Malattie Infettive, Ospedale Amedeo di Savoia, Università di Torino; Torino; Italy
| | - Tecla Gasperi
- Dipartimento di Scienze; Università Roma Tre; Roma; Italy
| | - Pasquale Narciso
- Istituto Nazionale per le Malattie Infettive I.R.C.C.S., “Lazzaro Spallanzani,”; Roma; Italy
| | | | - Leopoldo P. Pucillo
- Istituto Nazionale per le Malattie Infettive I.R.C.C.S., “Lazzaro Spallanzani,”; Roma; Italy
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Marcia de Figueiredo R, Mazziotta A, Pereira de Sant'Ana D, Palumbo C, Gasperi T. Active Methylene Compounds in Asymmetric Organocatalytic Synthesis of Natural Products and Pharmaceutical Scaffolds. CURR ORG CHEM 2012. [DOI: 10.2174/138527212803520290] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Migliorini A, Oliviero C, Gasperi T, Loreto MA. The Suzuki reaction applied to the synthesis of novel pyrrolyl and thiophenyl indazoles. Molecules 2012; 17:4508-21. [PMID: 22508331 PMCID: PMC6268423 DOI: 10.3390/molecules17044508] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 04/05/2012] [Accepted: 04/09/2012] [Indexed: 11/30/2022] Open
Abstract
The paper describes the Suzuki cross-coupling of a variety of N and C-3 substituted 5-bromoindazoles with N-Boc-2-pyrrole and 2-thiopheneboronic acids. The reactions, performed in the presence of K(2)CO(3), dimethoxyethane and Pd(dppf)Cl(2) as catalyst, gave the corresponding adducts in good yields. The methodology allows the facile production of indazole-based heteroaryl compounds, a unique architectural motif that is ubiquitous in biologically active molecules.
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Affiliation(s)
- Antonella Migliorini
- Department of Chemistry, “Sapienza” University of Rome, P.le A. Moro 5, I-00185 Roma, Italy; (A.M.); (C.O.)
| | - Chiara Oliviero
- Department of Chemistry, “Sapienza” University of Rome, P.le A. Moro 5, I-00185 Roma, Italy; (A.M.); (C.O.)
| | - Tecla Gasperi
- Department of Mechanical and Industrial Engineering and CISDiC, University of Studies “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy;
| | - Maria Antonietta Loreto
- Department of Chemistry, “Sapienza” University of Rome, P.le A. Moro 5, I-00185 Roma, Italy; (A.M.); (C.O.)
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Palumbo C, Mazzeo G, Mazziotta A, Gambacorta A, Loreto MA, Migliorini A, Superchi S, Tofani D, Gasperi T. Noncovalent Organocatalysis: A Powerful Tool for the Nucleophilic Epoxidation of α-Ylideneoxindoles. Org Lett 2011; 13:6248-51. [DOI: 10.1021/ol202646w] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chiara Palumbo
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - Giuseppe Mazzeo
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - Andrea Mazziotta
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - Augusto Gambacorta
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - M. Antonietta Loreto
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - Antonella Migliorini
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - Stefano Superchi
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - Daniela Tofani
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
| | - Tecla Gasperi
- Department of Mechanical and Industrial Engineering and the CISDiC, Università “Roma Tre”, via della Vasca Navale 79, I-00146 Roma, Italy, Department of Chemistry, “Sapienza” Università di Roma, p.le Aldo Moro 5, I-00185 Roma, Italy, and Department of Chemistry “A.M. Tamburro”, Università della Basilicata, via dell’Ateneo Lucano 10, I-85000 Potenza, Italy
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Gasperi T, Loreto MA, Migliorini A, Ventura C. Synthesis of Aziridine- and Oxirane-2-phosphonates Spiro-Fused with Oxindoles. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001021] [Citation(s) in RCA: 27] [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: 11/05/2022]
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Tofani D, Balducci V, Gasperi T, Incerpi S, Gambacorta A. Fatty acid hydroxytyrosyl esters: structure/antioxidant activity relationship by ABTS and in cell-culture DCF assays. J Agric Food Chem 2010; 58:5292-5299. [PMID: 20397651 DOI: 10.1021/jf1000716] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A large series of hydroxytyrosyl esters of C2-C18 fatty acids with increasing lipophilicity was prepared by a new highly efficient method based on acylation of methylorthoformate-protected hydroxytyrosol. All products were tested for relative antioxidant effect using ABTS assays in ethanolic medium and DCF assays in L6 cells. No linear correlation between lipophilicity and antioxidant effect was found. ABTS assays showed a growing antioxidant capacity, with respect to hydroxytyrosol, only for medium-sized ester chains (C4-C10) and a nearly constant capacity for the higher homologues. This has been rationalized by molecular dynamics experiments in terms of partial shielding of the catecholic hydroxyls by long-chain esters. A similar and dose-dependent pattern was observed in DCF assays in L6 cells, but a sharp antioxidant activity drop resulted for long-chain esters, probably due to membrane entrapment.
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Affiliation(s)
- Daniela Tofani
- Department of Mechanical and Industrial Engineering, University Roma Tre, Rome, Italy.
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Ammetto I, Gasperi T, Loreto MA, Migliorini A, Palmarelli F, Tardella PA. Synthesis of Functionalized Spiroaziridine-oxindoles from 3-Ylideneoxindoles: An Easy Route to 3-(Aminoalkyl)oxindoles. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900891] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bella M, Schietroma DMS, Cusella PP, Gasperi T, Visca V. Synergic asymmetric organocatalysis (SAOc) of Cinchonaalkaloids and secondary amines in the synthesis of bicyclo[2.2.2]octan-2-ones. Chem Commun (Camb) 2009:597-9. [DOI: 10.1039/b816550e] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
PEP and aldolase mimicry is the key for a direct organocatalytic entry to precursors of ulosonic acids, biomolecules of enormous importance in biology, chemistry and medicine; in the key aldol reaction the dimethylacetal of pyruvic aldehyde is used as phosphoenolpyruvate (PEP) equivalent and the amino acid proline functions as an organocatalyst, imitating the enzyme.
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Affiliation(s)
- Dieter Enders
- Institut für Organische Chemie, RWTH Aachen, Landoltweg 1, Aachen, 52074, Germany.
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Capuzzi M, Gambacorta A, Gasperi T, Loreto MA, Tardella PA. α-Amino-α-vinyl-γ-butyrolactone Derivatives from α-{[(Trimethylsilyl)methyl]alkylidene}-γ-butyrolactones. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Doszczak L, Gasperi T, Saint-Dizier A, Loreto MA, Enders D. Silylating Reagents: A Powerful Tool for the Construction of Isosteric Analogs of Highly Branched Odorants. Chem Biodivers 2004; 1:1921-35. [PMID: 17191829 DOI: 10.1002/cbdv.200490147] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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
We have discovered that alpha-[dimethyl(thexyl)silyl]acetaldehyde (= [dimethyl(1,1,2-trimethylpropyl)silyl]acetaldehyde; 31) has a strong, woody odor. Structural analysis has shown resemblance to known odorants with similar organoleptic properties. On the basis of structure-odor relationships, new and more-powerful woody and ambery sila odorants were prepared. Further derivatization led to a set of compounds with very interesting organoleptic properties. Selected chiral compounds were also prepared stereoselectively. The influence of the absolute configuration on the olfactory properties was in agreement with theoretical assumptions. We also designed other groups of organosilicon odorants. The compounds discovered can be obtained in a few simple steps from commercially available reagents, and may find application in the fragrance and flavor industry. Their structures provide interesting data for further research on structure-odor relationships.
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Affiliation(s)
- Leszek Doszczak
- Institut für Organische Chemie, RWTH Aachen, Professor-Pirlet-Strasse 1, D-52074 Aachen
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Gasperi T, Loreto M, Tardella PA, Veri E. Synthesis of α-amino γ-butyrolactone derivatives by aziridination of α-ylidene γ-butyrolactones. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01166-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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