1
|
Boriani G, Guerra F, De Ponti R, D'Onofrio A, Accogli M, Bertini M, Bisignani G, Forleo GB, Landolina M, Lavalle C, Notarstefano P, Ricci RP, Zanotto G, Palmisano P, De Bonis S, Pangallo A, Talarico A, Maglia G, Aspromonte V, Nigro G, Bianchi V, Rapacciuolo A, Ammendola E, Solimene F, Stabile G, Biffi M, Ziacchi M, Malpighi PSO, Saporito D, Casali E, Turco V, Malavasi VL, Vitolo M, Imberti JF, Bertini M, Anna AS, Zardini M, Placci A, Quartieri F, Bottoni N, Carinci V, Barbato G, De Maria E, Borghi A, Ramazzini OB, Bronzetti G, Tomasi C, Boggian G, Virzì S, Sassone B, Corzani A, Sabbatani P, Pastori P, Ciccaglioni A, Adamo F, Scaccia A, Spampinato A, Patruno N, Biscione F, Cinti C, Pignalberi C, Calò L, Tancredi M, Di Belardino N, Ricciardi D, Cauti F, Rossi P, Cardinale M, Ansalone G, Narducci ML, Pelargonio G, Silvetti M, Drago F, Santini L, Pentimalli F, Pepi P, Caravati F, Taravelli E, Belotti G, Rordorf R, Mazzone P, Bella PD, Rossi S, Canevese LF, Cilloni S, Doni LA, Vergara P, Baroni M, Perna E, Gardini A, Negro R, Perego GB, Curnis A, Arabia G, Russo AD, Marchese P, Dell’Era G, Occhetta E, Pizzetti F, Amellone C, Giammaria M, Devecchi C, Coppolino A, Tommasi S, Anselmino M, Coluccia G, Guido A, Rillo M, Palamà Z, Luzzi G, Pellegrino PL, Grimaldi M, Grandinetti G, Vilei E, Potenza D, Scicchitano P, Favale S, Santobuono VE, Sai R, Melissano D, Candida TR, Bonfantino VM, Di Canda D, Gianfrancesco D, Carretta D, Pisanò ECL, Medico A, Giaccari R, Aste R, Murgia C, Nissardi V, Sanna GD, Firetto G, Crea P, Ciotta E, Sgarito G, Caramanno G, Ciaramitaro G, Faraci A, Fasheri A, Di Gregorio L, Campsi G, Muscio G, Giannola G, Padeletti M, Del Rosso A, Notarstefano P, Nesti M, Miracapillo G, Giovannini T, Pieragnoli P, Rauhe W, Marini M, Guarracini F, Ridarelli M, Fedeli F, Mazza A, Zingarini G, Andreoli C, Carreras G, Zorzi A, Zanotto G, Rossillo A, Ignatuk B, Zerbo F, Molon G, Fantinel M, Zanon F, Marcantoni L, Zadro M, Bevilacqua M. Five waves of COVID-19 pandemic in Italy: results of a national survey evaluating the impact on activities related to arrhythmias, pacing, and electrophysiology promoted by AIAC (Italian Association of Arrhythmology and Cardiac Pacing). Intern Emerg Med 2023; 18:137-149. [PMID: 36352300 PMCID: PMC9646282 DOI: 10.1007/s11739-022-03140-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 10/17/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND The subsequent waves of the COVID-19 pandemic in Italy had a major impact on cardiac care. METHODS A survey to evaluate the dynamic changes in arrhythmia care during the first five waves of COVID-19 in Italy (first: March-May 2020; second: October 2020-January 2021; third: February-May 2021; fourth: June-October 2021; fifth: November 2021-February 2022) was launched. RESULTS A total of 127 physicians from arrhythmia centers (34% of Italian centers) took part in the survey. As compared to 2019, a reduction in 40% of elective pacemaker (PM), defibrillators (ICD), and cardiac resynchronization devices (CRT) implantations, with a 70% reduction for ablations, was reported during the first wave, with a progressive and gradual return to pre-pandemic volumes, generally during the third-fourth waves, slower for ablations. For emergency procedures (PM, ICD, CRT, and ablations), recovery from the initial 10% decline occurred in most cases during the second wave, with some variability. However, acute care for atrial fibrillation, electrical cardioversions, and evaluations for syncope showed a prolonged reduction of activity. The number of patients with devices which started remote monitoring increased by 40% during the first wave, but then the adoption of remote monitoring declined. CONCLUSIONS The dramatic and profound derangement in arrhythmia management that characterized the first wave of the COVID-19 pandemic was followed by a progressive return to the volume of activities of the pre-pandemic periods, even if with different temporal dynamics and some heterogeneity. Remote monitoring was largely implemented during the first wave, but full implementation is needed.
Collapse
Affiliation(s)
- Giuseppe Boriani
- Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Via del Pozzo 71, 41121, Modena, Italy.
| | - Federico Guerra
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital Umberto I-Lancisi-Salesi, Ancona, Italy
| | - Roberto De Ponti
- Department of Heart and Vessels, Ospedale di Circolo-University of Insubria, Varese, Italy
| | - Antonio D'Onofrio
- Departmental Unit of Electrophysiology, Evaluation and Treatment of Arrhythmias, Monaldi Hospital, Naples, Italy
| | | | - Matteo Bertini
- Cardiology Unit, Azienda Ospedaliero-Universitaria di Ferrara "Arcispedale S. Anna", Cona, Ferrara, Italy
| | - Giovanni Bisignani
- Cardiology Division, Castrovillari Hospital, ASP Cosenza, Castrovillari, Italy
| | | | | | - Carlo Lavalle
- Department of Cardiology, Policlinico Universitario Umberto I, Rome, Italy
| | | | | | - Gabriele Zanotto
- Department of Cardiology, Mater Salutis Hospital, Legnago, Verona, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Linciano P, Nasti R, Listro R, Amadio M, Pascale A, Potenza D, Vasile F, Minneci M, Ann J, Lee J, Zhou X, Mitchell GA, Blumberg PM, Rossi D, Collina S. Chiral 2-phenyl-3-hydroxypropyl esters as PKC-alpha modulators: HPLC enantioseparation, NMR absolute configuration assignment, and molecular docking studies. Chirality 2021; 34:498-513. [PMID: 34962318 DOI: 10.1002/chir.23406] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 12/16/2022]
Abstract
Protein kinase C (PKC) isoforms play a pivotal role in the regulation of numerous cellular functions, making them extensively studied and highly attractive drug targets. In our previous work, we identified in racemate 1-2, based on the 2-benzyl-3-hydroxypropyl ester scaffold, two new potent and promising PKCα and PKCδ ligands, targeting the C1 domain of these two kinases. Herein, we report the resolution of the racemates by enantioselective semi-preparative HPLC. The attribution of the absolute configuration (AC) of homochirals 1 was performed by NMR, via methoxy-α-trifluoromethyl-α-phenylacetic acid derivatization (MTPA or Mosher's acid). Moreover, the match between the experimental and predicted electronic circular dichroism (ECD) spectra confirmed the assigned AC. These results proved that Mosher's esters can be properly exploited for the determination of the AC also for chiral primary alcohols. Lastly, homochiral 1 and 2 were assessed for binding affinity and functional activity against PKCα. No significative differences in the Ki of the enantiopure compounds was observed, thus suggesting that chirality does not seem to play a significant role in targeting PKC C1 domain. These results are in accordance with the molecular docking studies performed using a new homology model for the human PKCαC1B domain.
Collapse
Affiliation(s)
| | - Rita Nasti
- Department of Drug Sciences, University of Pavia, Pavia, Italy.,Department of Environmental Science and Policy, University of Milan, Milan, Italy
| | - Roberta Listro
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | | | - Alessia Pascale
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | | | | | - Marco Minneci
- Department of Chemistry, University of Milan, Milan, Italy
| | - Jihyae Ann
- Laboratory of Medicinal Chemistry, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Jeewoo Lee
- Laboratory of Medicinal Chemistry, College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Xiaoling Zhou
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Gary A Mitchell
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Peter M Blumberg
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Daniela Rossi
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Simona Collina
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| |
Collapse
|
3
|
Panzeri S, Arosio D, Gazzola S, Belvisi L, Civera M, Potenza D, Vasile F, Kemker I, Ertl T, Sewald N, Reiser O, Piarulli U. Cyclic RGD and isoDGR Integrin Ligands Containing cis-2-amino-1-cyclopentanecarboxylic ( cis-β-ACPC) Scaffolds. Molecules 2020; 25:molecules25245966. [PMID: 33339382 PMCID: PMC7766232 DOI: 10.3390/molecules25245966] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 10/24/2020] [Revised: 12/08/2020] [Accepted: 12/14/2020] [Indexed: 02/06/2023] Open
Abstract
Integrin ligands containing the tripeptide sequences Arg-Gly-Asp (RGD) and iso-Asp-Gly- Arg (isoDGR) were actively investigated as inhibitors of tumor angiogenesis and directing unit in tumor-targeting drug conjugates. Reported herein is the synthesis, of two RGD and one isoDGR cyclic peptidomimetics containing (1S,2R) and (1R,2S) cis-2-amino-1-cyclopentanecarboxylic acid (cis-β-ACPC), using a mixed solid phase/solution phase synthetic protocol. The three ligands were examined in vitro in competitive binding assays to the purified αvβ3 and α5β1 receptors using biotinylated vitronectin (αvβ3) and fibronectin (α5β1) as natural displaced ligands. The IC50 values of the ligands ranged from nanomolar (the two RGD ligands) to micromolar (the isoDGR ligand) with a pronounced selectivity for αvβ3 over α5β1. In vitro cell adhesion assays were also performed using the human skin melanoma cell line WM115 (rich in integrin αvβ3). The two RGD ligands showed IC50 values in the same micromolar range as the reference compound (cyclo[RGDfV]), while for the isoDGR derivative an IC50 value could not be measured for the cell adhesion assay. A conformational analysis of the free RGD and isoDGR ligands by NMR (VT-NMR and NOESY experiments) and computational studies (MC/EM and MD), followed by docking simulations performed in the αVβ3 integrin active site, provided a rationale for the behavior of these ligands toward the receptor.
Collapse
Affiliation(s)
- Silvia Panzeri
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy; (S.P.); (S.G.)
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany; (T.E.); (O.R.)
| | - Daniela Arosio
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Scienze e Tecnologie Chimiche (SCITEC), Giulio Natta, Via C. Golgi 19, 20133 Milan, Italy;
| | - Silvia Gazzola
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy; (S.P.); (S.G.)
| | - Laura Belvisi
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milan, Italy; (L.B.); (M.C.); (D.P.); (F.V.)
| | - Monica Civera
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milan, Italy; (L.B.); (M.C.); (D.P.); (F.V.)
| | - Donatella Potenza
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milan, Italy; (L.B.); (M.C.); (D.P.); (F.V.)
| | - Francesca Vasile
- Dipartimento di Chimica, Università degli Studi di Milano, Via C. Golgi 19, 20133 Milan, Italy; (L.B.); (M.C.); (D.P.); (F.V.)
| | - Isabell Kemker
- Department of Chemistry, Organic and Bioorganic Chemistry, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany; (I.K.); (N.S.)
| | - Thomas Ertl
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany; (T.E.); (O.R.)
| | - Norbert Sewald
- Department of Chemistry, Organic and Bioorganic Chemistry, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany; (I.K.); (N.S.)
| | - Oliver Reiser
- Institute of Organic Chemistry, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany; (T.E.); (O.R.)
| | - Umberto Piarulli
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell’Insubria, Via Valleggio 11, 22100 Como, Italy; (S.P.); (S.G.)
- Correspondence:
| |
Collapse
|
4
|
Civera M, Vasile F, Potenza D, Colombo C, Parente S, Vettraino C, Prosdocimi T, Parisini E, Belvisi L. Exploring E-cadherin-peptidomimetics interaction using NMR and computational studies. PLoS Comput Biol 2019; 15:e1007041. [PMID: 31158220 PMCID: PMC6564044 DOI: 10.1371/journal.pcbi.1007041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 06/13/2019] [Accepted: 04/22/2019] [Indexed: 02/02/2023] Open
Abstract
Cadherins are homophilic cell-cell adhesion molecules whose aberrant expression has often been shown to correlate with different stages of tumor progression. In this work, we investigate the interaction of two peptidomimetic ligands with the extracellular portion of human E-cadherin using a combination of NMR and computational techniques. Both ligands have been previously developed as mimics of the tetrapeptide sequence Asp1-Trp2-Val3-Ile4 of the cadherin adhesion arm, and have been shown to inhibit E-cadherin-mediated adhesion in epithelial ovarian cancer cells with millimolar potency. To sample a set of possible interactions of these ligands with the E-cadherin extracellular portion, STD-NMR experiments in the presence of two slightly different constructs, the wild type E-cadherin-EC1-EC2 fragment and the truncated E-cadherin-(Val3)-EC1-EC2 fragment, were carried out at three temperatures. Depending on the protein construct, a different binding epitope of the ligand and also a different temperature effect on STD signals were observed, both suggesting an involvement of the Asp1-Trp2 protein sequence among all the possible binding events. To interpret the experimental results at the atomic level and to probe the role of the cadherin adhesion arm in the dynamic interaction with the peptidomimetic ligand, a computational protocol based on docking calculations and molecular dynamics simulations was applied. In agreement with NMR data, the simulations at different temperatures unveil high variability/dynamism in ligand-cadherin binding, thus explaining the differences in ligand binding epitopes. In particular, the modulation of the signals seems to be dependent on the protein flexibility, especially at the level of the adhesive arm, which appears to participate in the interaction with the ligand. Overall, these results will help the design of novel cadherin inhibitors that might prevent the swap dimer formation by targeting both the Trp2 binding pocket and the adhesive arm residues. Classical cadherins are the main adhesive proteins at the intercellular junctions and play an essential role in tissue morphogenesis and homeostasis. A large number of studies have shown that cadherin aberrant expression and/or dysregulation often correlate with pathological processes, such as tumor development and progression. Notwithstanding the emerging role played by cadherins in a number of solid tumors, the rational design of small inhibitors targeting these proteins is still in its infancy, likely due to the challenges posed by the development of small drug-like molecules that modulate protein-protein interactions and to the structural complexity of the various cadherin dimerization interfaces that constantly form and disappear as the protein moves along its highly dynamic and reversible homo-dimerization trajectory. In this work, we study the interaction of two small molecules with the extracellular portion of human E-cadherin using a combination of spectroscopic and computational techniques. The availability of molecules interfering in the cadherin homophilic interactions could provide a useful tool for the investigation of cadherin function in tumors, and potentially pave the way to the development of novel alternative diagnostic and therapeutic interventions in cadherin-expressing solid tumors.
Collapse
Affiliation(s)
- Monica Civera
- Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
- Istituto di Scienze e Tecnologie Molecolari (ISTM), Consiglio Nazionale delle Ricerche, Milan, Italy
- * E-mail: (MC); (FV)
| | - Francesca Vasile
- Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
- Istituto di Scienze e Tecnologie Molecolari (ISTM), Consiglio Nazionale delle Ricerche, Milan, Italy
- * E-mail: (MC); (FV)
| | - Donatella Potenza
- Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
| | - Cinzia Colombo
- Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
| | - Sara Parente
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, Como, Italy
| | - Chiara Vettraino
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
| | - Tommaso Prosdocimi
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
| | - Emilio Parisini
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milan, Italy
| | - Laura Belvisi
- Dipartimento di Chimica, Università degli Studi di Milano, Milan, Italy
- Istituto di Scienze e Tecnologie Molecolari (ISTM), Consiglio Nazionale delle Ricerche, Milan, Italy
| |
Collapse
|
5
|
Della Volpe S, Nasti R, Queirolo M, Unver MY, Jumde VK, Dömling A, Vasile F, Potenza D, Ambrosio FA, Costa G, Alcaro S, Zucal C, Provenzani A, Di Giacomo M, Rossi D, Hirsch AKH, Collina S. Novel Compounds Targeting the RNA-Binding Protein HuR. Structure-Based Design, Synthesis, and Interaction Studies. ACS Med Chem Lett 2019; 10:615-620. [PMID: 30996806 DOI: 10.1021/acsmedchemlett.8b00600] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 01/21/2019] [Indexed: 12/14/2022] Open
Abstract
The key role of RNA-binding proteins (RBPs) in regulating post-transcriptional processes and their involvement in several pathologies (i.e., cancer and neurodegeneration) have highlighted their potential as therapeutic targets. In this scenario, Embryonic Lethal Abnormal Vision (ELAV) or Hu proteins and their complexes with target mRNAs have been gaining growing attention. Compounds able to modulate the complex stability could constitute an innovative pharmacological strategy for the treatment of numerous diseases. Nevertheless, medicinal-chemistry efforts aimed at developing such compounds are still at an early stage. As part of our ongoing research in this field, we hereby present the rational design and synthesis of structurally novel HuR ligands, potentially acting as HuR-RNA interferers. The following assessment of the structural features of their interaction with HuR, combining saturation-transfer difference NMR and in silico studies, provides a guide for further research on the development of new effective interfering compounds of the HuR-RNA complex.
Collapse
Affiliation(s)
- Serena Della Volpe
- Department of Drug Sciences, Medicinal Chemistry and Technology Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Rita Nasti
- Department of Drug Sciences, Medicinal Chemistry and Technology Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Michele Queirolo
- Department of Drug Sciences, Medicinal Chemistry and Technology Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - M. Yagiz Unver
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Department of Drug Design and Optimization and Department of Pharmacy, Saarland University, Campus Building E8.1, 66123 Saarbrücken, Germany
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, NL-9747 AG, Groningen, The Netherlands
| | - Varsha K. Jumde
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Department of Drug Design and Optimization and Department of Pharmacy, Saarland University, Campus Building E8.1, 66123 Saarbrücken, Germany
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, NL-9747 AG, Groningen, The Netherlands
| | - Alexander Dömling
- Department of Drug Design, University of Groningen, A. Deusinglaan 1, Groningen, 9713 AV, The Netherlands
| | - Francesca Vasile
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milano, Italy
| | - Donatella Potenza
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milano, Italy
| | | | - Giosué Costa
- Department of Health Sciences, University “Magna Græcia” of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Stefano Alcaro
- Department of Health Sciences, University “Magna Græcia” of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Chiara Zucal
- Department of CIBIO, University of Trento, Via Sommarive 9, 38123 Povo, TN, Italy
| | | | - Marcello Di Giacomo
- Department of Drug Sciences, Medicinal Chemistry and Technology Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Daniela Rossi
- Department of Drug Sciences, Medicinal Chemistry and Technology Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Anna K. H. Hirsch
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Department of Drug Design and Optimization and Department of Pharmacy, Saarland University, Campus Building E8.1, 66123 Saarbrücken, Germany
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, NL-9747 AG, Groningen, The Netherlands
| | - Simona Collina
- Department of Drug Sciences, Medicinal Chemistry and Technology Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| |
Collapse
|
6
|
Zaca' V, Zanon F, Ammendola E, Menardi E, Parisi Q, Narducci ML, De Filippo P, Manzo M, Stabile G, Potenza D, Iori M, Zingarini G, Saporito D, Malacrida M, Biffi M. P3216Management of complications following ICD replacement/upgrade: preliminary results of the health care resource utilization analysis from the DECODE registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- V Zaca'
- Division of Cardiology, Cardiovascular and Thoracic Department, Santa Maria alle Scotte Hospital, Siena, Italy, Italy
| | - F Zanon
- General Hospital of Rovigo, Rovigo, Italy
| | | | - E Menardi
- Santa Croce E Carle Hospital, Cuneo, Italy
| | - Q Parisi
- Centro di Ricerca e Formazione ad Alta Tecnologia nelle Scienze Biomediche - “Giovanni Paolo II”, Campobasso, Italy
| | - M L Narducci
- Catholic University of the Sacred Heart, Rome, Italy
| | | | - M Manzo
- AOU S. Giovanni e Ruggi, Salerno, Italy
| | | | - D Potenza
- Casa Sollievo della Sofferenza Hospital, San Giovanni Rotondo, Italy
| | - M Iori
- Santa Maria Nuova Hospital, Reggio Emilia, Italy
| | - G Zingarini
- Hospital Santa Maria Della Misericordia, Perugia, Italy
| | - D Saporito
- Infermi Hospital of Rimini, Rimini, Italy
| | | | - M Biffi
- University of Bologna, Policlinico S. Orsola-Malpighi, Institute of Cardiology, Bologna, Italy
| |
Collapse
|
7
|
Vasile F, Panigada M, Siccardi A, Potenza D, Tiana G. A Combined NMR-Computational Study of the Interaction between Influenza Virus Hemagglutinin and Sialic Derivatives from Human and Avian Receptors on the Surface of Transfected Cells. Int J Mol Sci 2018; 19:E1267. [PMID: 29695047 PMCID: PMC5983646 DOI: 10.3390/ijms19051267] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 03/16/2018] [Revised: 04/18/2018] [Accepted: 04/19/2018] [Indexed: 12/31/2022] Open
Abstract
The development of small-molecule inhibitors of influenza virus Hemagglutinin could be relevant to the opposition of the diffusion of new pandemic viruses. In this work, we made use of Nuclear Magnetic Resonance (NMR) spectroscopy to study the interaction between two derivatives of sialic acid, Neu5Ac-α-(2,6)-Gal-β-(1⁻4)-GlcNAc and Neu5Ac-α-(2,3)-Gal-β-(1⁻4)-GlcNAc, and hemagglutinin directly expressed on the surface of recombinant human cells. We analyzed the interaction of these trisaccharides with 293T cells transfected with the H5 and H1 variants of hemagglutinin, which thus retain their native trimeric conformation in such a realistic environment. By exploiting the magnetization transfer between the protein and the ligand, we obtained evidence of the binding event, and identified the epitope. We analyzed the conformational features of the glycans with an approach combining NMR spectroscopy and data-driven molecular dynamics simulations, thus obtaining useful information for an efficient drug design.
Collapse
Affiliation(s)
- Francesca Vasile
- Department of Chemistry, University of Milano, Via Golgi 19, 20133 Milano, Italy.
| | - Maddalena Panigada
- Molecular Immunology Unit, San Raffaele Research Institute, via Olgettina 58, 20132 Milano, Italy.
| | - Antonio Siccardi
- Molecular Immunology Unit, San Raffaele Research Institute, via Olgettina 58, 20132 Milano, Italy.
| | - Donatella Potenza
- Department of Chemistry, University of Milano, Via Golgi 19, 20133 Milano, Italy.
| | - Guido Tiana
- Center for Complexity and Biosystems and Department of Physics, University of Milano and INFN, Via Celoria 16, 20133 Milano, Italy.
| |
Collapse
|
8
|
Zanon F, Ammendola E, Menardi E, Parisi Q, Narducci M, De Filippo P, Manzo M, Stabile G, Potenza D, Iori M, La Rosa C, Saporito D, Zaca' V, Malacrida M, Biffi M. P925Post ICD replacement/upgrade management of complications: preliminary results of the analysis of health care resource utilization from the DECODE registry. Europace 2018. [DOI: 10.1093/europace/euy015.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- F Zanon
- General Hospital, Rovigo, Italy
| | - E Ammendola
- AO dei Colli-Monaldi Hospital, Naples, Italy
| | - E Menardi
- Santa Croce E Carle Hospital, Cuneo, Italy
| | - Q Parisi
- Centro di Ricerca e Formazione ad Alta Tecnologia nelle Scienze Biomediche - “Giovanni Paolo II”, Campobasso, Italy
| | - M Narducci
- Catholic University of the Sacred Heart, Rome, Italy
| | | | - M Manzo
- AOU S. Giovanni e Ruggi, Salerno, Italy
| | | | - D Potenza
- Casa Sollievo della Sofferenza Hospital, San Giovanni Rotondo, Italy
| | - M Iori
- Santa Maria Nuova Hospital, Reggio Emilia, Italy
| | - C La Rosa
- Casa di cura Villa Verde, Taranto, Italy
| | - D Saporito
- Infermi Hospital of Rimini, Rimini, Italy
| | - V Zaca'
- Polyclinic Santa Maria alle Scotte, Siena, Italy
| | | | - M Biffi
- University Hospital Policlinic S. Orsola-Malpighi, Bologna, Italy
| |
Collapse
|
9
|
Vasile F, Gubinelli F, Panigada M, Soprana E, Siccardi A, Potenza D. NMR interaction studies of Neu5Ac-α-(2,6)-Gal-β-(1-4)-GlcNAc with influenza-virus hemagglutinin expressed in transfected human cells. Glycobiology 2017; 28:42-49. [DOI: 10.1093/glycob/cwx092] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 10/20/2017] [Indexed: 12/20/2022] Open
Affiliation(s)
- Francesca Vasile
- Department of Chemistry, University of Milano, Via Golgi 19, 20133 Milano, Italy
| | - Francesco Gubinelli
- Molecular Immunology Unit, San Raffaele Research Istitute, via Olgettina 58, 20132 Milano, Italy
| | - Maddalena Panigada
- Molecular Immunology Unit, San Raffaele Research Istitute, via Olgettina 58, 20132 Milano, Italy
| | - Elisa Soprana
- Molecular Immunology Unit, San Raffaele Research Istitute, via Olgettina 58, 20132 Milano, Italy
| | - Antonio Siccardi
- Molecular Immunology Unit, San Raffaele Research Istitute, via Olgettina 58, 20132 Milano, Italy
| | - Donatella Potenza
- Department of Chemistry, University of Milano, Via Golgi 19, 20133 Milano, Italy
| |
Collapse
|
10
|
Bertini M, Vado A, Narducci ML, Rago A, Campana A, Santamaria M, Stabile G, Potenza D, Saporito D, La Rosa C, Baiocchi C, Carinci V, Malagu' M, Malacrida M, Biffi M. P1072Strategies for antimicrobial prophylaxis at ICD/CRT-D Replacement/Upgrade in current italian clinical practice: Insights from the DECODE Registry. Europace 2017. [DOI: 10.1093/ehjci/eux151.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
11
|
Guzzetti I, Civera M, Vasile F, Arosio D, Tringali C, Piarulli U, Gennari C, Pignataro L, Belvisi L, Potenza D. Insights into the Binding of Cyclic RGD Peptidomimetics to α 5β 1 Integrin by using Live-Cell NMR And Computational Studies. ChemistryOpen 2017; 6:128-136. [PMID: 28168158 PMCID: PMC5288746 DOI: 10.1002/open.201600112] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 12/31/2022] Open
Abstract
The interaction of a small library of cyclic DKP-RGD peptidomimetics with α5β1 integrin has been investigated by means of an integrated experimental and computational approach. Bioaffinity NMR techniques, including saturation transfer difference (STD) and transferred NOESY, were applied to the ligands in a suspension of intact MDA-MB-231 breast cancer cells, in which integrin α5β1 is highly expressed. The NMR data were compared with the docking calculations of the RGD ligands in the crystal structure of the α5β1 binding site, and were integrated with competitive binding assays to the purified α5β1 integrin. Ligand binding epitopes involve protons of both the RGD moiety and the DKP scaffold, although the stereochemistry and the functionalization of the DKP scaffold as well as the macrocycle conformation determine a great variability in the interaction. The ligand showing the highest number of STD signals is also the most potent α5β1 ligand of the series, displaying a nanomolar IC50 value.
Collapse
Affiliation(s)
- Ileana Guzzetti
- Dipartimento di ChimicaUniversità degli Studi di MilanoVia Golgi, 1920133MilanoItaly
| | - Monica Civera
- Dipartimento di ChimicaUniversità degli Studi di MilanoVia Golgi, 1920133MilanoItaly
| | - Francesca Vasile
- Dipartimento di ChimicaUniversità degli Studi di MilanoVia Golgi, 1920133MilanoItaly
| | - Daniela Arosio
- CNR–Istituto di Scienze e Tecnologie Molecolari (ISTM)Via Golgi, 1920133MilanoItaly
| | - Cristina Tringali
- Dipartimento di Biotecnologie Mediche e Medicina TraslazionaleUniversità degli Studi di MilanoVia Fratelli Cervi, 9320090Segrate (MI)Italy
| | - Umberto Piarulli
- Dipartimento di Scienza e Alta TecnologiaUniversità degli Studi dell'InsubriaVia Valleggio, 1122100ComoItaly
| | - Cesare Gennari
- Dipartimento di ChimicaUniversità degli Studi di MilanoVia Golgi, 1920133MilanoItaly
| | - Luca Pignataro
- Dipartimento di ChimicaUniversità degli Studi di MilanoVia Golgi, 1920133MilanoItaly
| | - Laura Belvisi
- Dipartimento di ChimicaUniversità degli Studi di MilanoVia Golgi, 1920133MilanoItaly
| | - Donatella Potenza
- Dipartimento di ChimicaUniversità degli Studi di MilanoVia Golgi, 1920133MilanoItaly
| |
Collapse
|
12
|
Dapiaggi F, Pieraccini S, Potenza D, Vasile F, Macut H, Pellegrino S, Aliverti A, Sironi M. Computer aided design and NMR characterization of an oligopeptide targeting the Ebola virus VP24 protein. NEW J CHEM 2017. [DOI: 10.1039/c6nj04014d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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
The nona-peptide RS, designed on the basis of computational studies, is able to interact with Ebola VP24 and potentially inhibit its interaction with KPNA.
Collapse
Affiliation(s)
| | - Stefano Pieraccini
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
- Istituto di Scienze e Tecnologie Molecolari (INSTM)
| | | | - Francesca Vasile
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
| | - Helena Macut
- DISFARM-Dipartimento di Scienze Farmaceutiche
- Sezione Chimica Generale e Organica “A. Marchesini”
- Milano
- Italy
| | - Sara Pellegrino
- DISFARM-Dipartimento di Scienze Farmaceutiche
- Sezione Chimica Generale e Organica “A. Marchesini”
- Milano
- Italy
| | | | - Maurizio Sironi
- Dipartimento di Chimica
- Università degli Studi di Milano
- Milano
- Italy
- Istituto di Scienze e Tecnologie Molecolari (INSTM)
| |
Collapse
|
13
|
Vasile F, Civera M, Belvisi L, Potenza D, Tiana G. Thermodynamically–Weighted Conformational Ensemble of Cyclic RGD Peptidomimetics from NOE Data. J Phys Chem B 2016; 120:7098-107. [DOI: 10.1021/acs.jpcb.6b04941] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Vasile
- Department
of Chemistry, Università degli Studi di Milano, via Golgi
19, 20133 Milano, Italy
| | - M. Civera
- Department
of Chemistry, Università degli Studi di Milano, via Golgi
19, 20133 Milano, Italy
| | - L. Belvisi
- Department
of Chemistry, Università degli Studi di Milano, via Golgi
19, 20133 Milano, Italy
| | - D. Potenza
- Department
of Chemistry, Università degli Studi di Milano, via Golgi
19, 20133 Milano, Italy
| | - G. Tiana
- Center
of Complexity and Biosystems and Department of Physics, Università degli Studi di Milano and INFN, via Celoria 16, 20133 Milano, Italy
| |
Collapse
|
14
|
Vasile F, Menchi G, Lenci E, Guarna A, Potenza D, Trabocchi A. Insight to the binding mode of triazole RGD-peptidomimetics to integrin-rich cancer cells by NMR and molecular modeling. Bioorg Med Chem 2016; 24:989-94. [DOI: 10.1016/j.bmc.2016.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 01/12/2016] [Accepted: 01/13/2016] [Indexed: 12/20/2022]
|
15
|
Ordanini S, Zanchetta G, Porkolab V, Ebel C, Fieschi F, Guzzetti I, Potenza D, Palmioli A, Podlipnik Č, Meroni D, Bernardi A. Solution Behavior of Amphiphilic Glycodendrimers with a Rod-Like Core. Macromol Biosci 2016; 16:896-905. [PMID: 26898184 DOI: 10.1002/mabi.201500452] [Citation(s) in RCA: 6] [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: 12/09/2015] [Revised: 01/20/2016] [Indexed: 11/07/2022]
Abstract
Glycodendrimers based on aromatic cores have an amphiphilic character and have been reported to generate supramolecuar assemblies in water. A new group of glycodendrimers with an aromatic rod-like core were recently described as potent antagonists of DC-SIGN-mediated viral infections. A full characterization of the aggregation properties of these materials is presented here. The results show that these compounds exist mostly as monomers in water solution, in dynamic equilibrium with small aggregates (dimers or trimers). Larger aggregates observed by dynamic light scattering and transmission Electron Microscopy for some of the dendrimers are found to be portions of materials not fully solubilized and can be removed either by optimizing the dissolution protocol or by centrifugation of the samples.
Collapse
Affiliation(s)
- Stefania Ordanini
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi 19, 20133, Milano, Italy
| | - Giuliano Zanchetta
- Università degli Studi di Milano, Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Vanessa Porkolab
- Université Grenoble Alpes, IBS, F-38044, Grenoble, France.,CNRS, IBS, F-38044, Grenoble, France.,CEA, IBS, F-38044, Grenoble, France
| | - Christine Ebel
- Université Grenoble Alpes, IBS, F-38044, Grenoble, France.,CNRS, IBS, F-38044, Grenoble, France.,CEA, IBS, F-38044, Grenoble, France
| | - Franck Fieschi
- Université Grenoble Alpes, IBS, F-38044, Grenoble, France.,CNRS, IBS, F-38044, Grenoble, France.,CEA, IBS, F-38044, Grenoble, France
| | - Ileana Guzzetti
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi 19, 20133, Milano, Italy
| | - Donatella Potenza
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi 19, 20133, Milano, Italy
| | - Alessandro Palmioli
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi 19, 20133, Milano, Italy
| | - Črtomir Podlipnik
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna pot 113, 1000, Ljubljana, Slovenia
| | - Daniela Meroni
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi 19, 20133, Milano, Italy
| | - Anna Bernardi
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi 19, 20133, Milano, Italy
| |
Collapse
|
16
|
Vasile F, Rossi D, Collina S, Potenza D. Diffusion-Ordered Spectroscopy and Saturation Transfer Difference NMR Spectroscopy Studies of Selective Interactions between ELAV Protein Fragments and an mRNA Target. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
17
|
Vasile F, Reina JJ, Potenza D, Heggelund JE, Mackenzie A, Krengel U, Bernardi A. Comprehensive analysis of blood group antigen binding to classical and El Tor cholera toxin B-pentamers by NMR. Glycobiology 2014; 24:766-78. [PMID: 24829308 DOI: 10.1093/glycob/cwu040] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [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: 12/27/2022] Open
Abstract
Cholera is a diarrheal disease responsible for the deaths of thousands, possibly even hundreds of thousands of people every year, and its impact is predicted to further increase with climate change. It has been known for decades that blood group O individuals suffer more severe symptoms of cholera compared with individuals with other blood groups (A, B and AB). The observed blood group dependence is likely to be caused by the major virulence factor of Vibrio cholerae, the cholera toxin (CT). Here, we investigate the binding of ABH blood group determinants to both classical and El Tor CTB-pentamers using saturation transfer difference NMR and show that all three blood group determinants bind to both toxin variants. Although the details of the interactions differ, we see no large differences between the two toxin genotypes and observe very similar binding constants. We also show that the blood group determinants bind to a site distinct from that of the primary receptor, GM1. Transferred NOESY data confirm that the conformations of the blood group determinants in complex with both toxin variants are similar to those of reported X-ray and solution structures. Taken together, this detailed analysis provides a framework for the interpretation of the epidemiological data linking the severity of cholera infection and an individual's blood group, and brings us one step closer to understanding the molecular basis of cholera blood group dependence.
Collapse
Affiliation(s)
- Francesca Vasile
- Dipartimento di Chimica, Universita' degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | - José J Reina
- Dipartimento di Chimica, Universita' degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | - Donatella Potenza
- Dipartimento di Chimica, Universita' degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | - Julie E Heggelund
- Department of Chemistry, University of Oslo, PO Box 1033, Blindern NO-0315, Norway
| | - Alasdair Mackenzie
- Department of Chemistry, University of Oslo, PO Box 1033, Blindern NO-0315, Norway
| | - Ute Krengel
- Department of Chemistry, University of Oslo, PO Box 1033, Blindern NO-0315, Norway
| | - Anna Bernardi
- Dipartimento di Chimica, Universita' degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| |
Collapse
|
18
|
Gatti L, De Cesare M, Ciusani E, Corna E, Arrighetti N, Cominetti D, Belvisi L, Potenza D, Moroni E, Vasile F, Lecis D, Delia D, Castiglioni V, Scanziani E, Seneci P, Zaffaroni N, Perego P. Antitumor Activity of a Novel Homodimeric SMAC Mimetic in Ovarian Carcinoma. Mol Pharm 2013; 11:283-93. [DOI: 10.1021/mp4004578] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Laura Gatti
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Michelandrea De Cesare
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Emilio Ciusani
- Laboratory
of Clinical Pathology and Medical Genetics, Fondazione IRCCS Istituto Neurologico C. Besta, Via Celoria 11, Milan 20133, Italy
| | - Elisabetta Corna
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Noemi Arrighetti
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Denis Cominetti
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Laura Belvisi
- Department
of Chemistry, Università degli Studi di Milano, Via Golgi
19, Milan 20133, Italy
| | - Donatella Potenza
- Department
of Chemistry, Università degli Studi di Milano, Via Golgi
19, Milan 20133, Italy
| | - Elisabetta Moroni
- Department
of Chemistry, Università degli Studi di Milano, Via Golgi
19, Milan 20133, Italy
| | - Francesca Vasile
- Department
of Chemistry, Università degli Studi di Milano, Via Golgi
19, Milan 20133, Italy
| | - Daniele Lecis
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Domenico Delia
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Vittoria Castiglioni
- Department
of Veterinary Science and Public Health, Università degli Studi di Milano, Via Celoria 10, Milan 20133, Italy
| | - Eugenio Scanziani
- Department
of Veterinary Science and Public Health, Università degli Studi di Milano, Via Celoria 10, Milan 20133, Italy
| | - Pierfausto Seneci
- Department
of Chemistry, Università degli Studi di Milano, Via Golgi
19, Milan 20133, Italy
| | - Nadia Zaffaroni
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| | - Paola Perego
- Department
of Experimental Oncology and Molecular Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Amadeo 42, Milan 20133, Italy
| |
Collapse
|
19
|
Doknic D, Abramo M, Sutkeviciute I, Reinhardt A, Guzzi C, Schlegel MK, Potenza D, Nieto PM, Fieschi F, Seeberger PH, Bernardi A. Synthesis and Characterization of Linker-Armed Fucose-Based Glycomimetics. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300236] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
20
|
Mingozzi M, Dal Corso A, Marchini M, Guzzetti I, Civera M, Piarulli U, Arosio D, Belvisi L, Potenza D, Pignataro L, Gennari C. CyclicisoDGR Peptidomimetics as Low-Nanomolar αvβ3Integrin Ligands. Chemistry 2013; 19:3563-7. [DOI: 10.1002/chem.201204639] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Indexed: 02/04/2023]
|
21
|
Guzzetti I, Civera M, Vasile F, Araldi EM, Belvisi L, Gennari C, Potenza D, Fanelli R, Piarulli U. Determination of the binding epitope of RGD-peptidomimetics to αvβ3 and αIIbβ3 integrin-rich intact cells by NMR and computational studies. Org Biomol Chem 2013; 11:3886-93. [DOI: 10.1039/c3ob40540k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
22
|
Manzoni L, Belvisi L, Bianchi A, Conti A, Drago C, de Matteo M, Ferrante L, Mastrangelo E, Perego P, Potenza D, Scolastico C, Servida F, Timpano G, Vasile F, Rizzo V, Seneci P. Homo- and heterodimeric Smac mimetics/IAP inhibitors as in vivo-active pro-apoptotic agents. Part I: Synthesis. Bioorg Med Chem 2012; 20:6687-708. [DOI: 10.1016/j.bmc.2012.09.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2012] [Revised: 09/05/2012] [Accepted: 09/11/2012] [Indexed: 12/22/2022]
|
23
|
Lecis D, Mastrangelo E, Belvisi L, Bolognesi M, Civera M, Cossu F, De Cesare M, Delia D, Drago C, Manenti G, Manzoni L, Milani M, Moroni E, Perego P, Potenza D, Rizzo V, Scavullo C, Scolastico C, Servida F, Vasile F, Seneci P. Dimeric Smac mimetics/IAP inhibitors as in vivo-active pro-apoptotic agents. Part II: Structural and biological characterization. Bioorg Med Chem 2012; 20:6709-23. [DOI: 10.1016/j.bmc.2012.09.041] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2012] [Revised: 09/05/2012] [Accepted: 09/11/2012] [Indexed: 01/23/2023]
|
24
|
Marchini M, Mingozzi M, Colombo R, Guzzetti I, Belvisi L, Vasile F, Potenza D, Piarulli U, Arosio D, Gennari C. Inside Cover: Cyclic RGD Peptidomimetics Containing Bifunctional Diketopiperazine Scaffolds as New Potent Integrin Ligands (Chem. Eur. J. 20/2012). Chemistry 2012. [DOI: 10.1002/chem.201290079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
25
|
Marchini M, Mingozzi M, Colombo R, Guzzetti I, Belvisi L, Vasile F, Potenza D, Piarulli U, Arosio D, Gennari C. Cyclic RGD peptidomimetics containing bifunctional diketopiperazine scaffolds as new potent integrin ligands. Chemistry 2012; 18:6195-207. [PMID: 22517378 DOI: 10.1002/chem.201200457] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2012] [Indexed: 11/09/2022]
Abstract
The synthesis of eight bifunctional diketopiperazine (DKP) scaffolds is described; these were formally derived from 2,3-diaminopropionic acid and aspartic acid (DKP-1-DKP-7) or glutamic acid (DKP-8) and feature an amine and a carboxylic acid functional group. The scaffolds differ in the configuration at the two stereocenters and the substitution at the diketopiperazinic nitrogen atoms. The bifunctional diketopiperazines were introduced into eight cyclic peptidomimetics containing the Arg-Gly-Asp (RGD) sequence. The resulting RGD peptidomimetics were screened for their ability to inhibit biotinylated vitronectin binding to the purified integrins α(v)β(3) and α(v)β(5), which are involved in tumor angiogenesis. Nanomolar IC(50) values were obtained for the RGD peptidomimetics derived from trans DKP scaffolds (DKP-2-DKP-8). Conformational studies of the cyclic RGD peptidomimetics by (1)H NMR spectroscopy experiments (VT-NMR and NOESY spectroscopy) in aqueous solution and Monte Carlo/Stochastic Dynamics (MC/SD) simulations revealed that the highest affinity ligands display well-defined preferred conformations featuring intramolecular hydrogen-bonded turn motifs and an extended arrangement of the RGD sequence [Cβ(Arg)-Cβ(Asp) average distance ≥8.8 Å]. Docking studies were performed, starting from the representative conformations obtained from the MC/SD simulations and taking as a reference model the crystal structure of the extracellular segment of integrin α(v)β(3) complexed with the cyclic pentapeptide, Cilengitide. The highest affinity ligands produced top-ranked poses conserving all the important interactions of the X-ray complex.
Collapse
Affiliation(s)
- Mattia Marchini
- Università degli Studi di Milano, Dipartimento di Chimica Organica e Industriale, Via Venezian, 21, I-20133, Milan, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Potenza D, Belvisi L, Vasile F, Moroni E, Cossu F, Seneci P. A NMR and computational study of Smac mimics targeting both the BIR2 and BIR3 domains in XIAP protein. Org Biomol Chem 2012; 10:3278-87. [DOI: 10.1039/c2ob06979b] [Citation(s) in RCA: 8] [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: 11/21/2022]
|
27
|
Vasile F, Potenza D, Marsiglia B, Maffioli S, Donadio S. Solution structure by nuclear magnetic resonance of the two lantibiotics 97518 and NAI-107. J Pept Sci 2011; 18:129-34. [PMID: 22083835 DOI: 10.1002/psc.1425] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 09/14/2011] [Accepted: 09/15/2011] [Indexed: 11/09/2022]
Abstract
Lantibiotics 97518 and NAI-107, produced by the related genera Planomonospora and Microbispora respectively, are members of a family of nisin-related compounds. They represent promising compounds to treat infections caused by multiresistant Gram-positive pathogens. Despite their similar structure and a similar antibacterial spectrum, the two lantibiotics exhibit significant differences in their potency. To gain an insight into the structure-activity relationships, their conformational properties in solution are determined by NMR. After carrying out an NOE analysis of 2D (1)H NMR spectra, high-resolution 3D structures are determined using molecular dynamics simulations.
Collapse
Affiliation(s)
- Francesca Vasile
- Organic and Industrial Chemistry Department, University of Milano, Milan, Italy.
| | | | | | | | | |
Collapse
|
28
|
Potenza D, Vasile F, Belvisi L, Civera M, Araldi EMV. Cover Picture: STD and trNOESY NMR Study of Receptor-Ligand Interactions in Living Cancer Cells (ChemBioChem 5/2011). Chembiochem 2011. [DOI: 10.1002/cbic.201190015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
29
|
Potenza D, Vasile F, Belvisi L, Civera M, Araldi EMV. STD and trNOESY NMR Study of Receptor-Ligand Interactions in Living Cancer Cells. Chembiochem 2011; 12:695-9. [DOI: 10.1002/cbic.201000756] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Indexed: 11/10/2022]
|
30
|
da Ressurreição A, Vidu A, Civera M, Belvisi L, Potenza D, Manzoni L, Ongeri S, Gennari C, Piarulli U. Cyclic RGD-Peptidomimetics Containing Bifunctional Diketopiperazine Scaffolds as New Potent Integrin Ligands. Chemistry 2009; 15:12184-8. [DOI: 10.1002/chem.200902398] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
31
|
Seneci P, Bianchi A, Battaglia C, Belvisi L, Bolognesi M, Caprini A, Cossu F, Franco ED, Matteo MD, Delia D, Drago C, Khaled A, Lecis D, Manzoni L, Marizzoni M, Mastrangelo E, Milani M, Motto I, Moroni E, Potenza D, Rizzo V, Servida F, Turlizzi E, Varrone M, Vasile F, Scolastico C. Rational design, synthesis and characterization of potent, non-peptidic Smac mimics/XIAP inhibitors as proapoptotic agents for cancer therapy. Bioorg Med Chem 2009; 17:5834-56. [DOI: 10.1016/j.bmc.2009.07.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2009] [Revised: 07/01/2009] [Accepted: 07/05/2009] [Indexed: 01/02/2023]
|
32
|
|
33
|
Manzoni L, Belvisi L, Arosio D, Civera M, Pilkington-Miksa M, Potenza D, Caprini A, Araldi EM, Monferini E, Mancino M, Podestà F, Scolastico C. Cyclic RGD-Containing Functionalized Azabicycloalkane Peptides as Potent Integrin Antagonists for Tumor Targeting. ChemMedChem 2009; 4:615-32. [DOI: 10.1002/cmdc.200800422] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
34
|
Maffioli SI, Potenza D, Vasile F, De Matteo M, Sosio M, Marsiglia B, Rizzo V, Scolastico C, Donadio S. Structure revision of the lantibiotic 97518. J Nat Prod 2009; 72:605-607. [PMID: 19301921 DOI: 10.1021/np800794y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The lantibiotic 97518, produced by a Planomonospora sp., was reported as a 2194 Da polypeptide comprising 24 amino acid residues with five thioether bridges. It was assigned to the mersacidin subgroup of type B lantibiotics by Castiglione et al. (Biochemistry 2007, 46, 5884-5897) and named planosporicin. New analytical, chemical, and genetic data and reinterpretation of the published NMR chemical shifts enable structure revision of 97518. The resulting revision of the 97518 structure involves both a shift of two amino acids and a reorganization of two thioether bridges. With this revision, the lantibiotic 97518 becomes a clear member of the nisin subgroup of compounds.
Collapse
|
35
|
Timpano G, Tabarani G, Anderluh M, Invernizzi D, Vasile F, Potenza D, Nieto PM, Rojo J, Fieschi F, Bernardi A. Synthesis of novel DC-SIGN ligands with an alpha-fucosylamide anchor. Chembiochem 2008; 9:1921-30. [PMID: 18655085 DOI: 10.1002/cbic.200800139] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The dendritic cell-specific intercellular adhesion molecule (ICAM) 3-grabbing nonintegrin (DC-SIGN) is a C-type lectin that appears to perform several different functions. Besides mediating adhesion between dendritic cells and T lymphocytes, DC-SIGN recognizes several pathogens some of which, including HIV, appear to exploit it to invade host organisms. The intriguing diversity of the roles attributed to DC-SIGN and their therapeutic implications have stimulated the search for new ligands that could be used as biological probes and possibly as lead compounds for drug development. The natural ligands of DC-SIGN consist of mannose oligosaccharides or fucose-containing Lewis-type determinants. Using the known 3D structure of the Lewis-x trisaccharide, we have identified some monovalent alpha-fucosylamides that bind to DC-SIGN with inhibitory constants 0.4-0.5 mM, as determined by SPR, and have characterized their interaction with the protein by STD NMR spectroscopy. This work establishes for the first time alpha-fucosylamides as functional mimics of chemically and enzymatically unstable alpha-fucosides and describes interesting candidates for the preparation of multivalent systems able to block the receptor DC-SIGN with high affinity and with potential biomedical applications.
Collapse
Affiliation(s)
- Gabriele Timpano
- Dipartimento di Chimica Organica e Industriale and CISI, Università di Milano, via Venezian 21, 20133 Milano, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Arosio D, Belvisi L, Colombo L, Colombo M, Invernizzi D, Manzoni L, Potenza D, Serra M, Castorina M, Pisano C, Scolastico C. A Potent Integrin Antagonist from a Small Library of Cyclic RGD Pentapeptide Mimics Including Benzyl-Substituted Azabicycloalkane Amino Acids. ChemMedChem 2008; 3:1589-603. [DOI: 10.1002/cmdc.200800143] [Citation(s) in RCA: 20] [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: 11/10/2022]
|
37
|
Potenza D, Belvisi L. Transferred-NOE NMR experiments on intact human platelets: receptor-bound conformation of RGD-peptide mimics. Org Biomol Chem 2008; 6:258-62. [DOI: 10.1039/b713036h] [Citation(s) in RCA: 21] [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: 11/21/2022]
|
38
|
Abstract
Six flavonol glycosides were isolated and identified from the aerial parts of Anthyllis barba-jovis L. (Leguminosae), together with two coumarins and D-pinitol, a taxonomic marker of Leguminosae family. The structural elucidation of all compounds was based on their (1)H- and (13)C-NMR spectral data and bidimensional experiments. The total flavonoid content was also determined, according to the method described in the Italian pharmacopoeia. In order to complete the phytochemical investigation on A. barba-jovis, the essential oils from flowers and seeds were obtained by hydrodistillation and analysed by GC-MS; fresh flowers were analysed also directly by solid phase micro extraction (SPME).
Collapse
Affiliation(s)
- Luisa Pistelli
- Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Italy.
| | | | | | | | | |
Collapse
|
39
|
Terraneo G, Potenza D, Canales A, Jiménez-Barbero J, Baldridge KK, Bernardi A. A Simple Model System for the Study of Carbohydrate−Aromatic Interactions. J Am Chem Soc 2007; 129:2890-900. [PMID: 17309255 DOI: 10.1021/ja066633g] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [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: 11/28/2022]
Abstract
A molecular scaffold was identified which enables the establishment of intramolecular interactions between a monosaccharide and a nearby phenyl ring. A group of molecules containing four different monosaccharides (glucose, galactose, N-acetyl-glucosamine, and N-acetyl-galactosamine) was synthesized and used to investigate the extent and nature of this carbohydrate-arene interaction, as well as the effect on the overall 3D structure of the molecules involved. The sugar-aromatic distance was evaluated by rigorous NMR studies supported by molecular modeling and found to be constant throughout the series, independent of the nature of the sugar and of the conformational behavior of the fragment connecting the two elements. Ab initio calculations at the B3LYP/DZV(2d,p) level of theory enable the analysis of the electronic nature of the interaction. The study shows that, given the opportunity, persistent intramolecular aromatic-sugar interactions can be established and can significantly influence overall molecular shape and energetics. These results have important implications in the design of structural mimics of oligosaccharides.
Collapse
Affiliation(s)
- Giancarlo Terraneo
- Universita' di Milano, Dipartimento di Chimica Organica e Industriale e Centro di Eccellenza CISI, via Venezian 21, 20133 Milano, Italy
| | | | | | | | | | | |
Collapse
|
40
|
Abstract
Two new triterpenoids, lup-20(29)-en-3 alpha, 28-diol (1) and lup-20(29)-en-3 alpha, 28,30-triol (2), have been isolated from aerial parts of Bupleurum flavum, a native plant of the Eastern Mediterranean area (Bulgaria, Greece, and Turkey). Their structures were elucidated by spectral analysis. The known compounds betulin, betulinic acid, jasminol, together with the lignan nemerosin and eight flavonoids (kaempferol, isokaempferide, gossipetin, quercetin, luteolin, isorhamnetin 3-O-beta-D-glucopyranoside, isorhamnetin 3-rutinoside, and rutin) were also characterized.
Collapse
Affiliation(s)
- Luisa Pistelli
- Dipartimento di Chimica Bioorganica e Biofarmacia, Universita degli Studi di Pisa, via Bonnano 33, 56126 Pisa, Italy.
| | | | | | | | | | | | | |
Collapse
|
41
|
Belvisi L, Riccioni T, Marcellini M, Vesci L, Chiarucci I, Efrati D, Potenza D, Scolastico C, Manzoni L, Lombardo K, Stasi MA, Orlandi A, Ciucci A, Nico B, Ribatti D, Giannini G, Presta M, Carminati P, Pisano C. Biological and molecular properties of a new alpha(v)beta3/alpha(v)beta5 integrin antagonist. Mol Cancer Ther 2006; 4:1670-80. [PMID: 16275988 DOI: 10.1158/1535-7163.mct-05-0120] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [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: 11/16/2022]
Abstract
The aim of the present study was to identify specific alpha(v)beta3/alpha(v)beta5 integrin antagonists active on tumor-induced angiogenesis. To this purpose, in vitro integrin-binding assays were used to screen a library of conformationally constrained bicyclic lactam Arg-Gly-Asp-containing pseudopeptides. The results identified ST1646 as a high-affinity specific ligand for alpha(v)beta3 and alpha(v)beta5 integrins with negligible interacting with alpha5beta1 integrin. In all the assays, ST1646 was equipotent to or more potent than the well-characterized integrin antagonists c(RGDfV) and cyclo(Arg-Gly-Asp-d-Phe-[NMe]Val) (EMD121974). In the chorioallantoic membrane assay, topical administration of ST1646 was able to prevent the angiogenic responses elicited by recombinant fibroblast growth factor-2 or vascular endothelial growth factor. In addition, systemic administration of ST1646 in mice exerted a significant antiangiogenic activity on neovascularization triggered by mammary carcinoma MDA-MB435 cells implanted s.c. in a dorsal air sac via a (Millipore Filter Corporation, Bedford, MA) chamber. Moreover, ST1646 delivery via an osmotic pump inhibited the growth and vascularization of tumor xenografts originating from the injection of alpha(v)beta3/alpha(v)beta5-expressing human ovarian carcinoma cells in nude mice. In agreement with the biochemical and pharmacologic studies, Monte Carlo/Stochastic Dynamics simulation showed that the bicyclic scaffold in ST1646 forced the compound to assume a preferred conformation superimposable to the X-ray conformation of alpha(v)beta3-bound EMD121974. Accordingly, computer-docking studies indicated that the ST1646-alpha(v)beta3 integrin complex maintains the ligand-receptor distances and interactions observed in the crystalline EMD121974-alpha(v)beta3 integrin complex. Taken together, these observations indicate that ST1646 represents a dual alpha(v)beta3/alpha(v)beta5 integrin antagonist with interesting biochemical and biological features to be tested in cancer therapy.
Collapse
MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Arginine/chemistry
- Aspartic Acid/chemistry
- Cattle
- Cell Adhesion
- Cell Line, Tumor
- Cell Proliferation
- Chickens
- Crystallography, X-Ray
- Dose-Response Relationship, Drug
- Endothelium, Vascular/cytology
- Fibroblast Growth Factor 2/metabolism
- Glycine/chemistry
- Guinea Pigs
- Humans
- Inhibitory Concentration 50
- Integrin alphaVbeta3/antagonists & inhibitors
- Integrins/antagonists & inhibitors
- Integrins/metabolism
- Ligands
- Mice
- Mice, Nude
- Microcirculation
- Models, Chemical
- Models, Molecular
- Molecular Conformation
- Monte Carlo Method
- Neoplasm Transplantation
- Neovascularization, Pathologic
- Oligopeptides/chemistry
- Peptides, Cyclic/chemistry
- Peptides, Cyclic/pharmacology
- Platelet Aggregation
- Protein Binding
- Protein Conformation
- Receptors, Vitronectin/antagonists & inhibitors
- Recombinant Proteins/chemistry
- Stochastic Processes
- Vascular Endothelial Growth Factor A/metabolism
- Vitronectin/chemistry
Collapse
Affiliation(s)
- Laura Belvisi
- Organic and Industrial Chemistry Department, Centre for Biomolecular Interdisciplinary Studies and Industrial Applications, University of Milan, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Belvisi L, Bernardi A, Colombo M, Manzoni L, Potenza D, Scolastico C, Giannini G, Marcellini M, Riccioni T, Castorina M, LoGiudice P, Pisano C. Targeting integrins: insights into structure and activity of cyclic RGD pentapeptide mimics containing azabicycloalkane amino acids. Bioorg Med Chem 2005; 14:169-80. [PMID: 16214345 DOI: 10.1016/j.bmc.2005.08.048] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2005] [Accepted: 08/02/2005] [Indexed: 11/22/2022]
Abstract
A small library of cyclic RGD pentapeptide mimics incorporating stereoisomeric 5,6- and 5,7-fused bicyclic lactams was synthesized. This library was found to contain high-affinity ligands for the alpha(v)beta3 integrin. The aim of this study was to investigate activity, selectivity, and structure of these ligands in order to identify new specific alpha(v)-integrin antagonists that could be evaluated as tumor angiogenesis inhibitors. In vitro screening, including receptor-binding assays to purified alpha(v)beta3, alpha(v)beta5, and alpha5beta1 integrins, and platelet aggregation assay, revealed ST1646 as a potent, highly selective alpha(v)beta3/alpha(v)beta5 integrin antagonist. Structure determination of the cyclic RGD pentapeptide mimics performed by a combination of NMR spectroscopy, and molecular mechanics and dynamics calculations showed a strong dependence of the RGD cyclopeptide conformation on lactam ring size and stereochemistry. ST1646 revealed the highest ability within the library to adopt the proper RGD orientation required for binding to the alpha(v)beta3 integrin, as deduced from the recently solved crystal structure of the extracellular segment of integrin alpha(v)beta3 in complex with a cyclic pentapeptide ligand.
Collapse
Affiliation(s)
- Laura Belvisi
- Dipartimento di Chimica Organica e Industriale and Centro Interdisciplinare Studi bio-molecolari e applicazioni Industriali, (CISI), Università degli Studi di Milano, via G. Venezian 21, I-20133 Milan, Italy
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Mari S, Posteri H, Marcou G, Potenza D, Micheli F, Cañada F, Jimenez-Barbero J, Bernardi A. Synthesis, Conformational Studies and Mannosidase Stability of a Mimic of 1,2-Mannobioside. European J Org Chem 2004. [DOI: 10.1002/ejoc.200400520] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
44
|
Trabocchi A, Potenza D, Guarna A. Solvent-Dependent Conformational Behaviour of Model Tetrapeptides Containing a Bicyclic Proline Mimetic. European J Org Chem 2004. [DOI: 10.1002/ejoc.200400359] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
45
|
Bernardi A, Arosio D, Potenza D, Sánchez-Medina I, Mari S, Cañada FJ, Jiménez-Barbero J. Intramolecular Carbohydrate-Aromatic Interactions and Intermolecular van der Waals Interactions Enhance the Molecular Recognition Ability of GM1 Glycomimetics for Cholera Toxin. Chemistry 2004; 10:4395. [PMID: 15378617 DOI: 10.1002/chem.200400084] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The design and synthesis of two GM1 glycomimetics, 6 and 7, and analysis of their conformation in the free state and when complexed to cholera toxin is described. These compounds, which include an (R)-cyclohexyllactic acid and an (R)-phenyllactic acid fragment, respectively, display significant affinity for cholera toxin. A detailed NMR spectroscopy study of the toxin/glycomimetic complexes, assisted by molecular modeling techniques, has allowed their interactions with the toxin to be explained at the atomic level. It is shown that intramolecular van der Waals and CH-pi carbohydrate-aromatic interactions define the conformational properties of 7, which adopts a three-dimensional structure significantly preorganized for proper interaction with the toxin. The exploitation of this kind of sugar-aromatic interaction, which is very well described in the context of carbohydrate/protein complexes, may open new avenues for the rational design of sugar mimics.
Collapse
Affiliation(s)
- Anna Bernardi
- Università di Milano-Dipartimento di Chimica Organica e Industriale e Centro di Eccellenza CISI via Venezian 21, 20133 Milano, Italy.
| | | | | | | | | | | | | |
Collapse
|
46
|
Scolastico C, Belvisi L, Colombo L, Manzoni L, Potenza D. Design, Synthesis, Conformational Analysis and Application of Azabicycloalkane Amino Acids as Constrained Dipeptide Mimics. Synlett 2004. [DOI: 10.1055/s-2004-829540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
47
|
Abstract
Ganglioside GM1 mimics including (R)-2-hydroxy-3-cyclohexylpropionic acid or (R)-2-hydroxy-3-phenylpropionic acid as replacements for NeuAc are stronger cholera toxin binders than the parent ligand 2, which includes (R)-2-hydroxy-propionic acid.
Collapse
Affiliation(s)
- Daniela Arosio
- Dipartimento di Chimica Organica e Industriale, Universita' di Milano, via Venezian 21, 20133 Milan, Italy
| | | | | | | | | |
Collapse
|
48
|
Bernardi A, Arosio D, Manzoni L, Monti D, Posteri H, Potenza D, Mari S, Jiménez-Barbero J. Mimics of ganglioside GM1 as cholera toxin ligands: replacement of the GalNAc residue. Org Biomol Chem 2003; 1:785-92. [PMID: 12929360 DOI: 10.1039/b210503a] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new cholera toxin (CT) ligands (4 and 5) are described. The new ligands were designed starting from the known GM1 mimics 2 and 3 by replacement of their GalNAc residue with the C4 isomer GlcNAc. As predicted by molecular modelling, the conformational properties of the equivalent pairs 2-4 and 3-5 are very similar and their affinity for CT is of the same order of magnitude. NMR experiments have also proved that 5 occupies the GM1-binding site of the toxin and have revealed its bound conformation.
Collapse
Affiliation(s)
- Anna Bernardi
- Universita' di Milano, Dipartimento di Chimica Organica e Industriale, Centro di Eccellenza CISI, via Venezian 21, 20133 Milano, Italy
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Belvisi L, Caporale A, Colombo M, Manzoni L, Potenza D, Scolastico C, Castorina M, Cati M, Giannini G, Pisano C. Cyclic RGD Peptides Containing Azabicycloalkane Reverse-Turn Mimics. Helv Chim Acta 2002. [DOI: 10.1002/hlca.200290017] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
50
|
Bernardi A, Potenza D, Capelli AM, García-Herrero A, Cañada FJ, Jiménez-Barbero J. Second-generation mimics of ganglioside GM1 oligosaccharide: a three-dimensional view of their interactions with bacterial enterotoxins by NMR and computational methods. Chemistry 2002; 8:4597-612. [PMID: 12362397 DOI: 10.1002/1521-3765(20021018)8:20<4597::aid-chem4597>3.0.co;2-u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
As a step to delineate a strategy of ligand design for cholera toxin (CT), NMR studies were performed on several mimics of the GM1 ganglioside oligosaccharide. The conformation of these analogues was investigated first in solution and then upon binding to cholera toxin by transferred nuclear Overhauser effect (TR-NOE) measurements. It was demonstrated that CT selects a conformation similar to the global minima of the free saccharides from the ensemble of presented conformations. No evidence of major conformational distortions was obtained, but one or two of the available conformers of the hydroxyacid side chain appear to be selected in the bound state. The NMR data were interpreted with the aid of computer models, generated and analyzed by using a combination of different approaches (MacroModels' MC/EM and MC/SD, Autodock, and GRID). Analysis of the NMR data supported by computational studies allowed us to interpret the experimental observations and to derive workable models of the ligand:toxin complexes. These models suggest that the higher affinity of the (R)-lactic acid derivative 3 may stem from lipophilic interactions with a hydrophobic area in the toxin binding site located in the vicinity of the sialic acid side chain binding region of the CT:GM1 complex, and formed by the side chain of Ile-58 and Lys-34. Thus, the models obtained have allowed us to make useful design suggestions for the improvement of ligand affinity.
Collapse
Affiliation(s)
- Anna Bernardi
- Dipartimento di Chimica Organica e Industriale Universita' di Milano, and Centro di Eccellenza CISI via Venezian 21, (Italy).
| | | | | | | | | | | |
Collapse
|