1
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Balducci E, Papi F, Capialbi DE, Del Bino L. Polysaccharides' Structures and Functions in Biofilm Architecture of Antimicrobial-Resistant (AMR) Pathogens. Int J Mol Sci 2023; 24:ijms24044030. [PMID: 36835442 PMCID: PMC9965654 DOI: 10.3390/ijms24044030] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Bacteria and fungi have developed resistance to the existing therapies such as antibiotics and antifungal drugs, and multiple mechanisms are mediating this resistance. Among these, the formation of an extracellular matrix embedding different bacterial cells, called biofilm, is an effective strategy through which bacterial and fungal cells are establishing a relationship in a unique environment. The biofilm provides them the possibility to transfer genes conferring resistance, to prevent them from desiccation and to impede the penetration of antibiotics or antifungal drugs. Biofilms are formed of several constituents including extracellular DNA, proteins and polysaccharides. Depending on the bacteria, different polysaccharides form the biofilm matrix in different microorganisms, some of them involved in the first stage of cells' attachment to surfaces and to each other, and some responsible for giving the biofilm structure resistance and stability. In this review, we describe the structure and the role of different polysaccharides in bacterial and fungal biofilms, we revise the analytical methods to characterize them quantitatively and qualitatively and finally we provide an overview of potential new antimicrobial therapies able to inhibit biofilm formation by targeting exopolysaccharides.
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Affiliation(s)
| | | | - Daniela Eloisa Capialbi
- GSK, 53100 Siena, Italy
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy
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2
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Payne S, Andrusenko I, Papi F, Potticary JL, Gemmi M, Hall S. The Crystal Structure and Electronic Properties of Three Novel Charge Transfer Co-crystals TCNQF n-triphenylene ( n = 0,2,4). CrystEngComm 2023. [DOI: 10.1039/d2ce01127a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The pure phase syntheses of three novel organic charge transfer complexes, obtained by combining the polyaromatic hydrocarbon triphenylene with 7,7,8,8-tetracyanoquinodimethane TCNQ and its fluorinated derivatives, are reported together with their...
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3
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Fallarini S, Papi F, Licciardi F, Natali F, Lombardi G, Maestrelli F, Nativi C. Niosomes as Biocompatible Scaffolds for the Multivalent Presentation of Tumor-Associated Antigens (TACAs) to the Immune System. Bioconjug Chem 2022; 34:181-192. [PMID: 36519843 PMCID: PMC9853506 DOI: 10.1021/acs.bioconjchem.2c00383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Fully synthetic tumor-associated carbohydrate antigen (TACA)-based vaccines are a promising strategy to treat cancer. To overcome the intrinsic low immunogenicity of TACAs, the choice of the antigens' analogues and multivalent presentation have been proved to be successful. Here, we present the preparation, characterization, and in vitro screening of niosomes displaying multiple copies of the mucin antigen TnThr (niosomes-7) or of TnThr mimetic 1 (niosomes-2). Unprecedentedly, structural differences, likely related to the carbohydrate portions, were observed for the two colloidal systems. Both niosomal systems are stable, nontoxic and endowed with promising immunogenic properties.
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Affiliation(s)
- Silvia Fallarini
- Department
of Pharmaceutical Sciences, University of
“Piemonte Orientale”, Novara 28100, Italy
| | - Francesco Papi
- Department
of Chemistry, University of Florence, Sesto Fiorentino, Florence 50019, Italy
| | - Federico Licciardi
- Department
of Chemistry, University of Florence, Sesto Fiorentino, Florence 50019, Italy
| | - Francesca Natali
- CNR-IOM
and INSIDE@ILL, c/o OGG,
71 avenue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Grazia Lombardi
- Department
of Pharmaceutical Sciences, University of
“Piemonte Orientale”, Novara 28100, Italy
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4
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Bazzicalupi C, Bonardi A, Biver T, Ferraroni M, Papi F, Savastano M, Lombardi P, Gratteri P. Probing the Efficiency of 13-Pyridylalkyl Berberine Derivatives to Human Telomeric G-Quadruplexes Binding: Spectroscopic, Solid State and In Silico Analysis. Int J Mol Sci 2022; 23:ijms232214061. [PMID: 36430540 PMCID: PMC9693123 DOI: 10.3390/ijms232214061] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
The interaction between the series of berberine derivatives 1-5 (NAX071, NAX120, NAX075, NAX077 and NAX079) and human telomeric G-quadruplexes (G4), which are able to inhibit the Telomerase enzyme's activity in malignant cells, was investigated. The derivatives bear a pyridine moiety connected by a hydrocarbon linker of varying length (n = 1-5, with n number of aliphatic carbon atoms) to the C13 position of the parent berberine. As for the G4s, both bimolecular 5'-TAGGGTTAGGGT-3' (Tel12) and monomolecular 5'-TAGGGTTAGGGTTAGGGTTAGGG-3' (Tel23) DNA oligonucleotides were considered. Spectrophotometric titrations, melting tests, X-ray diffraction solid state analysis and in silico molecular dynamics (MD) simulations were used to describe the different systems. The results were compared in search of structure-activity relationships. The analysis pointed out the formation of 1:1 complexes between Tel12 and all ligands, whereas both 1:1 and 2:1 ligand/G4 stoichiometries were found for the adduct formed by NAX071 (n = 1). Tel12, with tetrads free from the hindrance by the loop, showed a higher affinity. The details of the different binding geometries were discussed, highlighting the importance of H-bonds given by the berberine benzodioxole group and a correlation between the strength of binding and the hydrocarbon linker length. Theoretical (MD) and experimental (X-ray) structural studies evidence the possibility for the berberine core to interact with one or both G4 strands, depending on the constraints given by the linker length, thus affecting the G4 stabilization effect.
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Affiliation(s)
- Carla Bazzicalupi
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Firenze, Italy
- Correspondence: (C.B.); (P.G.)
| | - Alessandro Bonardi
- Laboratory of Molecular Modeling Cheminformatics & QSAR, Department NEUROFARBA—Pharmaceutical and Nutraceutical Section, University of Firenze, Via Ugo Schiff 6, 50019 Firenze, Italy
| | - Tarita Biver
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Marta Ferraroni
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Firenze, Italy
| | - Francesco Papi
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Firenze, Italy
- Laboratory of Molecular Modeling Cheminformatics & QSAR, Department NEUROFARBA—Pharmaceutical and Nutraceutical Section, University of Firenze, Via Ugo Schiff 6, 50019 Firenze, Italy
| | - Matteo Savastano
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Firenze, Italy
| | - Paolo Lombardi
- Naxospharma srl, Via G. Di Vittorio 70, Novate Milanese, 20026 Milano, Italy
| | - Paola Gratteri
- Laboratory of Molecular Modeling Cheminformatics & QSAR, Department NEUROFARBA—Pharmaceutical and Nutraceutical Section, University of Firenze, Via Ugo Schiff 6, 50019 Firenze, Italy
- Correspondence: (C.B.); (P.G.)
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5
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Palladino P, Papi F, Minunni M, Nativi C, Scarano S. Structurally Constrained MUC1‐Tn Mimetic Antigen as Template for Molecularly Imprinted Polymers (MIPs): A Promising Tool for Cancer Diagnostics. Chempluschem 2022. [DOI: 10.1002/cplu.202200219] [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: 11/10/2022]
Affiliation(s)
- Pasquale Palladino
- Department of Chemistry DICUS University of Florence via della Lastruccia 3-13 50019 Sesto F.no (FI Italy
| | - Francesco Papi
- Department of Chemistry DICUS University of Florence via della Lastruccia 3-13 50019 Sesto F.no (FI Italy
| | - Maria Minunni
- Department of Chemistry DICUS University of Florence via della Lastruccia 3-13 50019 Sesto F.no (FI Italy
| | - Cristina Nativi
- Department of Chemistry DICUS University of Florence via della Lastruccia 3-13 50019 Sesto F.no (FI Italy
| | - Simona Scarano
- Department of Chemistry DICUS University of Florence via della Lastruccia 3-13 50019 Sesto F.no (FI Italy
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6
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Sorieul C, Papi F, Carboni F, Pecetta S, Phogat S, Adamo R. Recent advances and future perspectives on carbohydrate-based cancer vaccines and therapeutics. Pharmacol Ther 2022; 235:108158. [PMID: 35183590 DOI: 10.1016/j.pharmthera.2022.108158] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 01/30/2022] [Accepted: 02/14/2022] [Indexed: 12/13/2022]
Abstract
Carbohydrates are abundantly expressed on the surface of both eukaryotic and prokaryotic cells, often as post translational modifications of proteins. Glycoproteins are recognized by the immune system and can trigger both innate and humoral responses. This feature has been harnessed to generate vaccines against polysaccharide-encapsulated bacteria such as Streptococcus pneumoniae, Hemophilus influenzae type b and Neisseria meningitidis. In cancer, glycosylation plays a pivotal role in malignancy development and progression. Since glycans are specifically expressed on the surface of tumor cells, they have been targeted for the discovery of anticancer preventive and therapeutic treatments, such as vaccines and monoclonal antibodies. Despite the various efforts made over the last years, resulting in a series of clinical studies, attempts of vaccination with carbohydrate-based candidates have proven unsuccessful, primarily due to the immune tolerance often associated with these glycans. New strategies are thus deployed to enhance carbohydrate-based cancer vaccines. Moreover, lessons learned from glycan immunobiology paved the way to the development of new monoclonal antibodies specifically designed to recognize cancer-bound carbohydrates and induce tumor cell killing. Herein we provide an overview of the immunological principles behind the immune response towards glycans and glycoconjugates and the approaches exploited at both preclinical and clinical level to target cancer-associated glycans for the development of vaccines and therapeutic monoclonal antibodies. We also discuss gaps and opportunities to successfully advance glycan-directed cancer therapies, which could provide patients with innovative and effective treatments.
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7
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Palladino P, Papi F, Minunni M, Nativi C, Scarano S. Structurally Constrained MUC1-Tn Mimetic Antigen as Template for Molecularly Imprinted Polymers (MIPs): A Promising Tool for Cancer Diagnostics. Chempluschem 2022; 87:e202200068. [PMID: 35502851 DOI: 10.1002/cplu.202200068] [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: 02/25/2022] [Revised: 04/18/2022] [Indexed: 12/24/2022]
Abstract
Abnormal glycoconjugates have distinctly been recognized as potential biomarkers for cancer diagnosis. A great deal of attention has been focused on Tn antigen, an oversimplified mucin-1 O-glycan, over-expressed in different cancers. Herein, we investigate the possibility to replace the use of anti-Tn monoclonal antibodies with an innovative class of catecholamine-based Molecularly Imprinted Polymers (MIPs), emerging in recent years as promising tools for bioanalytical applications. MIPs are synthetic receptors characterized by high sensitivity and specificity towards the imprinted target. Here, original polynorepinephrine-based MIPs coupled to Surface Plasmon Resonance biosensing for Tn antigen recognition are reported. We have verified the imprinting and binding capacity of these MIPs towards very small antigenic entities, represented by the natural Tn antigen and the TnThr mimetic 1 (conjugated to BSA or linked to a MUC1 hexapeptide analogue), and compared the biosensor performances with an anti-Tn monoclonal antibody. The results clearly display the effectiveness of the pursued imprinting strategies.
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Affiliation(s)
- Pasquale Palladino
- Department of Chemistry, DICUS, University of Florence, via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
| | - Francesco Papi
- Department of Chemistry, DICUS, University of Florence, via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
| | - Maria Minunni
- Department of Chemistry, DICUS, University of Florence, via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
| | - Cristina Nativi
- Department of Chemistry, DICUS, University of Florence, via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
| | - Simona Scarano
- Department of Chemistry, DICUS, University of Florence, via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
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8
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Forgione RE, Nieto FF, Di Carluccio C, Milanesi F, Fruscella M, Papi F, Nativi C, Molinaro A, Palladino P, Scarano S, Minunni M, Montefiori M, Civera M, Sattin S, Francesconi O, Marchetti R, Silipo A. Conformationally Constrained Sialyl Analogues as New Potential Binders of h-CD22. Chembiochem 2022; 23:e202200076. [PMID: 35313057 PMCID: PMC9315041 DOI: 10.1002/cbic.202200076] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/19/2022] [Indexed: 11/21/2022]
Abstract
Here, two conformationally constrained sialyl analogues were synthesized and characterized in their interaction with the inhibitory Siglec, human CD22 (h‐CD22). An orthogonal approach, including biophysical assays (SPR and fluorescence), ligand‐based NMR techniques, and molecular modelling, was employed to disentangle the interaction mechanisms at a molecular level. The results showed that the Sialyl‐TnThr antigen analogue represents a promising scaffold for the design of novel h‐CD22 inhibitors. Our findings also suggest that the introduction of a biphenyl moiety at position 9 of the sialic acid hampers canonical accommodation of the ligand in the protein binding pocket, even though the affinity with respect to the natural ligand is increased. Our results address the search for novel modifications of the Neu5Ac‐α(2‐6)‐Gal epitope, outline new insights for the design and synthesis of high‐affinity h‐CD22 ligands, and offer novel prospects for therapeutic intervention to prevent autoimmune diseases and B‐cell malignancies.
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Affiliation(s)
- Rosa Ester Forgione
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Ferran Fabregat Nieto
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Cristina Di Carluccio
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Francesco Milanesi
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy.,Centro Risonanze Magnetiche, CERM, Via L. Sacconi 6, 50019 Sesto Fiorentino, Firenze, Italy
| | - Martina Fruscella
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy
| | - Francesco Papi
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy
| | - Cristina Nativi
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Pasquale Palladino
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy
| | - Simona Scarano
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy
| | - Maria Minunni
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy
| | - Marco Montefiori
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133, Milano, Italy
| | - Monica Civera
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133, Milano, Italy
| | - Sara Sattin
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133, Milano, Italy
| | - Oscar Francesconi
- Department of Chemistry "Ugo Schiff", University of Florence, Polo Scientifico e Tecnologico, 50019, Sesto Fiorentino, Firenze, Italy
| | - Roberta Marchetti
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, 80126, Napoli, Italy
| | - Alba Silipo
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, 80126, Napoli, Italy
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9
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Francesconi O, Ienco A, Papi F, Dolce M, Catastini A, Nativi C, Roelens S. A Sulfonated Tweezer-Shaped Receptor Selectively Recognizes Caffeine in Water. J Org Chem 2022; 87:2662-2667. [PMID: 35107278 PMCID: PMC8902752 DOI: 10.1021/acs.joc.1c02620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The
selective recognition of caffeine in water among structurally
related xanthines and purine or pyrimidine bases was achieved by a
simple tweezer-shaped receptor featuring sulfonate hydrosolubilizing
groups. The remarkable affinity for caffeine, among the highest reported
thus far in the literature and larger than that shown by adenosine
receptors of all subtypes, stems from a synergistic combination of
hydrogen bonding, CH−π, and π-stacking interactions.
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Affiliation(s)
- Oscar Francesconi
- Department of Chemistry "Ugo Schiff" DICUS and INSTM, Polo Scientifico e Tecnologico, University of Florence, I-50019 Firenze, Italy
| | - Andrea Ienco
- Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche (CNR), Via Madonna del Piano, I-50019 Firenze, Italy
| | - Francesco Papi
- Department of Chemistry "Ugo Schiff" DICUS and INSTM, Polo Scientifico e Tecnologico, University of Florence, I-50019 Firenze, Italy
| | - Marta Dolce
- Department of Chemistry "Ugo Schiff" DICUS and INSTM, Polo Scientifico e Tecnologico, University of Florence, I-50019 Firenze, Italy
| | - Andrea Catastini
- Department of Chemistry "Ugo Schiff" DICUS and INSTM, Polo Scientifico e Tecnologico, University of Florence, I-50019 Firenze, Italy
| | - Cristina Nativi
- Department of Chemistry "Ugo Schiff" DICUS and INSTM, Polo Scientifico e Tecnologico, University of Florence, I-50019 Firenze, Italy
| | - Stefano Roelens
- Department of Chemistry "Ugo Schiff" DICUS and INSTM, Polo Scientifico e Tecnologico, University of Florence, I-50019 Firenze, Italy
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10
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Rocchi L, Cartoni Mancinelli A, Paolotti L, Mattioli S, Boggia A, Papi F, Castellini C. Sustainability of Rearing System Using Multicriteria Analysis: Application in Commercial Poultry Production. Animals (Basel) 2021; 11:3483. [PMID: 34944261 PMCID: PMC8697973 DOI: 10.3390/ani11123483] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/02/2021] [Accepted: 12/05/2021] [Indexed: 02/04/2023] Open
Abstract
The aim of the present study was to develop a multicriteria model for the comparison of three commercial poultry farms: organic with Ross 308 genotype (OR), organic with Naked Neck genotype (ONN) and a conventional system (C), which represents the most common commercial farming system. A model based on multicriteria decision analysis was developed, considering for the first time the One Welfare approach in an operational manner, including three dimensions: human, environmental and animal welfare. The three alternatives demonstrated different performances, according to the different dimensions considered. In particular, the two organic systems performed better for human welfare and animal welfare, with relevant differences due to the genetic strains used. Conventional rearing performed better for the environment index due to the method chosen. The multicriteria analysis showed that the organic system performed better overall than the conventional system. In particular, the use of an adapted Slow Growing (SG) strain positively affected the final rank, mainly by reducing welfare problems and producing good economic and social performance. The stability of the results was verified by performing a sensitivity analysis, specifically a weight stability analysis, which confirmed the strength of results.
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Affiliation(s)
- Lucia Rocchi
- Department of Agricultural, Environmental and Food Science, University of Perugia, Borgo XX Giugno 74, 06124 Perugia, Italy; (L.R.); (L.P.); (S.M.); (A.B.); (C.C.)
| | - Alice Cartoni Mancinelli
- Department of Agricultural, Environmental and Food Science, University of Perugia, Borgo XX Giugno 74, 06124 Perugia, Italy; (L.R.); (L.P.); (S.M.); (A.B.); (C.C.)
| | - Luisa Paolotti
- Department of Agricultural, Environmental and Food Science, University of Perugia, Borgo XX Giugno 74, 06124 Perugia, Italy; (L.R.); (L.P.); (S.M.); (A.B.); (C.C.)
| | - Simona Mattioli
- Department of Agricultural, Environmental and Food Science, University of Perugia, Borgo XX Giugno 74, 06124 Perugia, Italy; (L.R.); (L.P.); (S.M.); (A.B.); (C.C.)
| | - Antonio Boggia
- Department of Agricultural, Environmental and Food Science, University of Perugia, Borgo XX Giugno 74, 06124 Perugia, Italy; (L.R.); (L.P.); (S.M.); (A.B.); (C.C.)
| | - Francesco Papi
- CARNJ Società Cooperativa Agricola, Via Martiri della Libertà, 27–60035 Jesi, Italy;
| | - Cesare Castellini
- Department of Agricultural, Environmental and Food Science, University of Perugia, Borgo XX Giugno 74, 06124 Perugia, Italy; (L.R.); (L.P.); (S.M.); (A.B.); (C.C.)
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11
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Pucci G, Bisogni V, Battista F, D'Abbondanza M, Anastasio F, Crapa ME, Sanesi L, Desantis F, Troiani L, Papi F, Vaudo G. Association between Ideal Cardiovascular Health and aortic stiffness in Italian adolescents. The MACISTE study. Nutr Metab Cardiovasc Dis 2021; 31:2724-2732. [PMID: 34334290 DOI: 10.1016/j.numecd.2021.05.035] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/17/2021] [Accepted: 05/31/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND AND AIMS Ideal Cardiovascular Health (ICH), defined as optimal levels of cardiovascular (CV) health factors and behaviors, has been reported to be very low in adults and children, with consequent several negative health outcomes and higher CV risk. The present study investigated the burden of ICH among Italian adolescents and its association with carotid-femoral pulse wave velocity (cf-PWV). METHODS AND RESULTS 387 healthy adolescents (mean age 17.1 ± 1.4 years) attending the "G. Donatelli" High School in Terni, Italy, were evaluated. ICH was assessed through clinical evaluation, laboratory measures and interviewer-administered questionnaires. Cf-PWV was measured by arterial tonometry (SphygmoCor). For each ICH metric, a score of 2 was assigned for ideal levels, 1 for intermediate, and 0 for poor. All subjects showed at least one ICH metric, whereas none showed all ICH 7 metrics. The average number of ICH metrics was 4.3 ± 1.1. The highest rates were observed for fasting blood glucose (98%), whereas an ideal healthy diet was achieved only by 8% of subjects. The Cf-PWV was inversely and linearly associated with the sum of ICH metrics (p = 0.03) and the ICH score (p < 0.01). At the multivariate analysis, the association between ICH score and cf-PWV remained significant after adjustment for age, sex, heart rate, mean arterial pressure and other confounders (p = 0.04). CONCLUSION ICH is relatively uncommon among Italian adolescents and inversely related to cf-PWV. Our results showed a detrimental association between CV unhealthy factors and behaviors with increased aortic stiffness, which starts developing at an early stage of the lifespan.
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Affiliation(s)
- Giacomo Pucci
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy; Unit of Internal Medicine, Terni University Hospital, Terni, Italy.
| | - Valeria Bisogni
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy; Unit of Internal Medicine, Terni University Hospital, Terni, Italy
| | - Francesca Battista
- Department of Medicine, Sports and Exercise Medicine Division, University of Padua, Padua, Italy
| | - Marco D'Abbondanza
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy; Unit of Internal Medicine, Terni University Hospital, Terni, Italy
| | - Fabio Anastasio
- Unit of Cardiology, ASST-VAL Hospital of Sondrio, Sondrio, Italy
| | - Mariano E Crapa
- U.O. Medicina Interna, Asl Taranto, Presidio Ospedaliero Occidentale, Castellaneta, Italy
| | - Leandro Sanesi
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy; Unit of Internal Medicine, Terni University Hospital, Terni, Italy
| | | | - Lucas Troiani
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Francesco Papi
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy; Unit of Internal Medicine, Terni University Hospital, Terni, Italy
| | - Gaetano Vaudo
- Department of Medicine and Surgery, University of Perugia, Perugia, Italy; Unit of Internal Medicine, Terni University Hospital, Terni, Italy
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12
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Papi F, Pâris A, Lafite P, Daniellou R, Nativi C. Synthesis of an STnThr analogue, structurally based on a TnThr antigen mimetic. Org Biomol Chem 2020; 18:7366-7372. [PMID: 32924046 DOI: 10.1039/d0ob01749c] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The monosaccharide Tn and the disaccharide STn are tumor antigens with similar structures and common biosynthetic pathways. Both are always over-expressed simultaneously on tumor cell surfaces. We report herein the efficient synthesis of the STnThr antigen analogue 2, featuring the immunogenic TnThr mimetic 1 aglycon. Analogously to the native STn, 2 is recognized by the influenza N1 neuraminidase. A model of the N1·2 complex showed the sialyl moiety of 2 well nested in the active site pocket, with docking unaffected by the rigid aglycon. The analogue 2 is, therefore, in association with mimetic 1, a good determinant for the design of new multiantigen cancer vaccines.
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Affiliation(s)
- Francesco Papi
- Department of Chemistry, University of Florence, via della Lastruccia, 3-13, I-50119 Sesto F.no (FI), Italy.
| | - Arnaud Pâris
- Institut de Chimie Organique et Analytique (ICOA), Université d'Orléans/CNRS, UMR 7311, BP 6759, F-45067, Orléans Cedex 2, France
| | - Pierre Lafite
- Institut de Chimie Organique et Analytique (ICOA), Université d'Orléans/CNRS, UMR 7311, BP 6759, F-45067, Orléans Cedex 2, France
| | - Richard Daniellou
- Institut de Chimie Organique et Analytique (ICOA), Université d'Orléans/CNRS, UMR 7311, BP 6759, F-45067, Orléans Cedex 2, France
| | - Cristina Nativi
- Department of Chemistry, University of Florence, via della Lastruccia, 3-13, I-50119 Sesto F.no (FI), Italy.
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13
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Papi F, Bazzicalupi C, Ferraroni M, Ciolli G, Lombardi P, Khan AY, Kumar GS, Gratteri P. Correction to "Pyridine Derivative of the Natural Alkaloid Berberine as Human Telomeric G 4-DNA Binder: A Solution and Solid-State Study". ACS Med Chem Lett 2020; 11:1490. [PMID: 32676159 DOI: 10.1021/acsmedchemlett.0c00309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
[This corrects the article DOI: 10.1021/acsmedchemlett.9b00516.].
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14
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Amedei A, Asadzadeh F, Papi F, Vannucchi MG, Ferrucci V, Bermejo IA, Fragai M, De Almeida CV, Cerofolini L, Giuntini S, Bombaci M, Pesce E, Niccolai E, Natali F, Guarini E, Gabel F, Traini C, Catarinicchia S, Ricci F, Orzalesi L, Berti F, Corzana F, Zollo M, Grifantini R, Nativi C. A Structurally Simple Vaccine Candidate Reduces Progression and Dissemination of Triple-Negative Breast Cancer. iScience 2020; 23:101250. [PMID: 32629615 PMCID: PMC7322362 DOI: 10.1016/j.isci.2020.101250] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 03/23/2020] [Revised: 05/04/2020] [Accepted: 06/02/2020] [Indexed: 01/02/2023] Open
Abstract
The Tn antigen is a well-known tumor-associated carbohydrate determinant, often incorporated in glycopeptides to develop cancer vaccines. Herein, four copies of a conformationally constrained mimetic of the antigen TnThr (GalNAc-Thr) were conjugated to the adjuvant CRM197, a protein licensed for human use. The resulting vaccine candidate, mime[4]CRM elicited a robust immune response in a triple-negative breast cancer mouse model, correlated with high frequency of CD4+ T cells and low frequency of M2-type macrophages, which reduces tumor progression and lung metastasis growth. Mime[4]CRM-mediated activation of human dendritic cells is reported, and the proliferation of mime[4]CRM-specific T cells, in cancer tissue and peripheral blood of patients with breast cancer, is demonstrated. The locked conformation of the TnThr mimetic and a proper presentation on the surface of CRM197 may explain the binding of the conjugate to the anti-Tn antibody Tn218 and its efficacy to fight cancer cells in mice.
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Affiliation(s)
- Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | - Fatemeh Asadzadeh
- Department of Molecular Medicine and Medical Biotechnologies, University of Napoli "Federico II", via Pansini, 5, 80131 Napoli, Italy; CEINGE Biotecnologie Avanzata, Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | - Francesco Papi
- Department of Chemistry, University of Florence, via della Lastruccia, 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - Maria Giuliana Vannucchi
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | - Veronica Ferrucci
- Department of Molecular Medicine and Medical Biotechnologies, University of Napoli "Federico II", via Pansini, 5, 80131 Napoli, Italy; CEINGE Biotecnologie Avanzata, Via Gaetano Salvatore 486, 80145 Napoli, Italy
| | - Iris A Bermejo
- Department of Chemistry, University of La Rioja, Madre de Dios, 53, 26006 Logroño, Spain
| | - Marco Fragai
- Department of Chemistry, University of Florence, via della Lastruccia, 3-13, 50019 Sesto Fiorentino (FI), Italy; CERM, University of Florence, via L. Sacconi, 6, 50019 Sesto Fiorentino (FI), Italy
| | - Carolina Vieira De Almeida
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | - Linda Cerofolini
- CERM, University of Florence, via L. Sacconi, 6, 50019 Sesto Fiorentino (FI), Italy; Consorzio Interuniversitario Risonanze Magnetiche di Metalloproteine (CIRMMP), via L. Sacconi, 6, 50019 Sesto Fiorentino (FI), Italy
| | - Stefano Giuntini
- Department of Chemistry, University of Florence, via della Lastruccia, 3-13, 50019 Sesto Fiorentino (FI), Italy; Department of Chemistry, University of La Rioja, Madre de Dios, 53, 26006 Logroño, Spain
| | - Mauro Bombaci
- Istituto Nazionale Genetica Molecolare, Padiglione Romeo ed Enrica Invernizzi, IRCCS Ospedale Maggiore Policlinico, Milan, Italy
| | - Elisa Pesce
- Istituto Nazionale Genetica Molecolare, Padiglione Romeo ed Enrica Invernizzi, IRCCS Ospedale Maggiore Policlinico, Milan, Italy
| | - Elena Niccolai
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | - Francesca Natali
- CNR-IOM, c/o Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - Eleonora Guarini
- Department of Physics and Astronomy, via Sansone, 1, 50019 Sesto Fiorentino (FI), Italy
| | - Frank Gabel
- Université Grenobles Alpes, CEA, CNRS, IBS, 38000 Grenoble, France
| | - Chiara Traini
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | - Stefano Catarinicchia
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | - Federica Ricci
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | - Lorenzo Orzalesi
- Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 03, 50134 Firenze, Italy
| | | | - Francisco Corzana
- CERM, University of Florence, via L. Sacconi, 6, 50019 Sesto Fiorentino (FI), Italy
| | - Massimo Zollo
- Department of Molecular Medicine and Medical Biotechnologies, University of Napoli "Federico II", via Pansini, 5, 80131 Napoli, Italy; CEINGE Biotecnologie Avanzata, Via Gaetano Salvatore 486, 80145 Napoli, Italy.
| | - Renata Grifantini
- Istituto Nazionale Genetica Molecolare, Padiglione Romeo ed Enrica Invernizzi, IRCCS Ospedale Maggiore Policlinico, Milan, Italy.
| | - Cristina Nativi
- Department of Chemistry, University of Florence, via della Lastruccia, 3-13, 50019 Sesto Fiorentino (FI), Italy.
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15
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Papi F, Bazzicalupi C, Ferraroni M, Ciolli G, Lombardi P, Khan AY, Kumar GS, Gratteri P. Pyridine Derivative of the Natural Alkaloid Berberine as Human Telomeric G 4-DNA Binder: A Solution and Solid-State Study. ACS Med Chem Lett 2020; 11:645-650. [PMID: 32435365 DOI: 10.1021/acsmedchemlett.9b00516] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 02/07/2020] [Indexed: 12/18/2022] Open
Abstract
Telomerase is an enzyme deputed to the maintenance of eukaryotic chromosomes; however, its overexpression is a recognized hallmark of many cancer forms. A viable route for the inhibition of telomerase in malignant cells is the stabilization of G-quadruplex structures (G4) at the 3' overhang of telomeres. Berberine has shown in this regard valuable G4 binding properties together with a significant anticancer activity and telomerase inhibition effects. Here, we focused on a berberine derivative featuring a pyridine containing side group at the 13th position. Such modification actually improves the binding toward telomeric G-quadruplexes and establishes a degree of selectivity in the interaction with different sequences. Moreover, the X-ray crystal structure obtained for the complex formed by the ligand and a bimolecular human telomeric quadruplex affords a better understanding of the 13-berberine derivatives behavior with telomeric G4 and allows to draw useful insights for the future design of derivatives with remarkable anticancer properties.
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Affiliation(s)
- Francesco Papi
- Department of Chemistry ’Ugo Schiff’, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Carla Bazzicalupi
- Department of Chemistry ’Ugo Schiff’, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Marta Ferraroni
- Department of Chemistry ’Ugo Schiff’, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Giulia Ciolli
- Department of Chemistry ’Ugo Schiff’, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Paolo Lombardi
- Naxospharma srl, Via G. Di Vittorio 70, 20026 Novate Milanese (MI), Italy
| | - Asma Yasmeen Khan
- Biophysical Chemistry Laboratory, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
| | - Gopinatha Suresh Kumar
- Biophysical Chemistry Laboratory, CSIR-Indian Institute of Chemical Biology, Kolkata 700 032, India
| | - Paola Gratteri
- Department NEUROFARBA − Pharmaceutical and Nutraceutical Section and Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
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16
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Papi F, Targetti G, Cerofolini L, Luchinat C, Fragai M, Nativi C. Nanoparticles for the multivalent presentation of a TnThr mimetic and as tool for solid state NMR coating investigation. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2019-0210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract
The fully characterization of tumor associated antigens (TAAs) and of tumor associated carbohydrate antigens (TACAs) have opened the avenue of cancer immunotherapy. The intrinsic poor immunogenicity of TACAs, however, spotlighted the importance of multivalent presentation of the antigen(s) to trigger an immune response. Nanoparticles are excellent scaffolds for this purpose. Here we reported on the easy glycosylation of iron-based and biocompatible dextran-based nanoparticles with 1, a mimetic of the TnThr antigen. The multivalent presentation of 1 induced the induction of TNF-α and IL-6/IL10, respectively. The multivalent glycosylation of silica nanoparticles (GSiNPs) was also performed and saccharide loading qualitative assessed by solid state NMR. Our results offer the proof of concept that biomolecules coating can also be investigated on solid system by NMR.
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Affiliation(s)
- Francesco Papi
- Dipartimento di Chimica , University of Florence , via della Lastruccia , 3,13 – 50019 Sesto F.no (FI) , Italy
| | - Giulia Targetti
- Dipartimento di Chimica , University of Florence , via della Lastruccia , 3,13 – 50019 Sesto F.no (FI) , Italy
| | - Linda Cerofolini
- CERM, University of Florence , via L. Sacconi , 6 – 50019 Sesto F.no (FI) , Italy
| | - Claudio Luchinat
- Dipartimento di Chimica , University of Florence , via della Lastruccia , 3,13 – 50019 Sesto F.no (FI) , Italy
- CERM, University of Florence , via L. Sacconi , 6 – 50019 Sesto F.no (FI) , Italy
| | - Marco Fragai
- Dipartimento di Chimica , University of Florence , via della Lastruccia , 3,13 – 50019 Sesto F.no (FI) , Italy
- CERM, University of Florence , via L. Sacconi , 6 – 50019 Sesto F.no (FI) , Italy
| | - Cristina Nativi
- Dipartimento di Chimica , University of Florence , via della Lastruccia , 3,13 – 50019 Sesto F.no (FI) , Italy
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17
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van Rixel VHS, Busemann A, Wissingh MF, Hopkins SL, Siewert B, van de Griend C, Siegler MA, Marzo T, Papi F, Ferraroni M, Gratteri P, Bazzicalupi C, Messori L, Bonnet S. Induction of a Four‐Way Junction Structure in the DNA Palindromic Hexanucleotide 5′‐d(CGTACG)‐3′ by a Mononuclear Platinum Complex. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814532] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Vincent H. S. van Rixel
- Leiden Institute of ChemistryLeiden University Einsteinweg 55, PO Box 9502 2333CC Leiden The Netherlands
| | - Anja Busemann
- Leiden Institute of ChemistryLeiden University Einsteinweg 55, PO Box 9502 2333CC Leiden The Netherlands
| | - Mathijs F. Wissingh
- Leiden Institute of ChemistryLeiden University Einsteinweg 55, PO Box 9502 2333CC Leiden The Netherlands
| | - Samantha L. Hopkins
- Leiden Institute of ChemistryLeiden University Einsteinweg 55, PO Box 9502 2333CC Leiden The Netherlands
| | - Bianka Siewert
- Leiden Institute of ChemistryLeiden University Einsteinweg 55, PO Box 9502 2333CC Leiden The Netherlands
| | - Corjan van de Griend
- Leiden Institute of ChemistryLeiden University Einsteinweg 55, PO Box 9502 2333CC Leiden The Netherlands
| | | | - Tiziano Marzo
- Department of PharmacyUniversity of Pisa Via Bonanno Pisano 6 56126 Pisa Italy
| | - Francesco Papi
- Department of ChemistryUniversity of Florence Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Marta Ferraroni
- Department of ChemistryUniversity of Florence Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Paola Gratteri
- Department NEUROFARBA—Pharmaceutical and Nutraceutical sectionLaboratory of Molecular Modeling Cheminformatics and QSARUniversity of Florence Via Ugo Schiff 6 50019 Sesto Fiorentino (FI) Italy
| | - Carla Bazzicalupi
- Department of ChemistryUniversity of Florence Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Luigi Messori
- Department of Chemistry “Ugo Schiff”University of Florence Italy
| | - Sylvestre Bonnet
- Leiden Institute of ChemistryLeiden University Einsteinweg 55, PO Box 9502 2333CC Leiden The Netherlands
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18
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van Rixel VHS, Busemann A, Wissingh MF, Hopkins SL, Siewert B, van de Griend C, Siegler MA, Marzo T, Papi F, Ferraroni M, Gratteri P, Bazzicalupi C, Messori L, Bonnet S. Induction of a Four-Way Junction Structure in the DNA Palindromic Hexanucleotide 5'-d(CGTACG)-3' by a Mononuclear Platinum Complex. Angew Chem Int Ed Engl 2019; 58:9378-9382. [PMID: 31046177 PMCID: PMC6618160 DOI: 10.1002/anie.201814532] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 12/21/2018] [Indexed: 12/22/2022]
Abstract
Four-way junctions (4WJs) are supramolecular DNA assemblies comprising four interacting DNA strands that in biology are involved in DNA-damage repair. In this study, a new mononuclear platinum(II) complex 1 was prepared that is capable of driving the crystallization of the DNA oligomer 5'-d(CGTACG)-3' specifically into a 4WJ-like motif. In the crystal structure of the 1-CGTACG adduct, the distorted-square-planar platinum complex binds to the core of the 4WJ-like motif through π-π stacking and hydrogen bonding, without forming any platinum-nitrogen coordination bonds. Our observations suggest that the specific molecular properties of the metal complex are crucially responsible for triggering the selective assembly of this peculiar DNA superstructure.
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Affiliation(s)
- Vincent H S van Rixel
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, PO Box 9502, 2333CC, Leiden, The Netherlands
| | - Anja Busemann
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, PO Box 9502, 2333CC, Leiden, The Netherlands
| | - Mathijs F Wissingh
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, PO Box 9502, 2333CC, Leiden, The Netherlands
| | - Samantha L Hopkins
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, PO Box 9502, 2333CC, Leiden, The Netherlands
| | - Bianka Siewert
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, PO Box 9502, 2333CC, Leiden, The Netherlands
| | - Corjan van de Griend
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, PO Box 9502, 2333CC, Leiden, The Netherlands
| | | | - Tiziano Marzo
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano 6, 56126, Pisa, Italy
| | - Francesco Papi
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy
| | - Marta Ferraroni
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy
| | - Paola Gratteri
- Department NEUROFARBA-Pharmaceutical and Nutraceutical section, Laboratory of Molecular Modeling Cheminformatics and QSAR, University of Florence, Via Ugo Schiff 6, 50019, Sesto Fiorentino (FI), Italy
| | - Carla Bazzicalupi
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino (FI), Italy
| | - Luigi Messori
- Department of Chemistry "Ugo Schiff", University of Florence, Italy
| | - Sylvestre Bonnet
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, PO Box 9502, 2333CC, Leiden, The Netherlands
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Papi F, Kenđel A, Ratkaj M, Piantanida I, Gratteri P, Bazzicalupi C, Miljanić S. Effect of structure levels on surface-enhanced Raman scattering of human telomeric G-quadruplexes in diluted and crowded media. Anal Bioanal Chem 2019; 411:5197-5207. [PMID: 31119345 DOI: 10.1007/s00216-019-01894-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/07/2019] [Revised: 04/26/2019] [Accepted: 05/06/2019] [Indexed: 10/26/2022]
Abstract
Human telomeric G-quadruplexes are emerging targets in anticancer drug discovery since they are able to efficiently inhibit telomerase, an enzyme which is greatly involved in telomere instability and immortalization process in malignant cells. G-quadruplex (G4) DNA is highly polymorphic and can adopt different topologies upon addition of electrolytes, additives, and ligands. The study of G-quadruplex forms under various conditions, however, might be quite challenging. In this work, surface-enhanced Raman scattering (SERS) spectroscopy has been applied to study G-quadruplexes formed by human telomeric sequences, d[A3G3(TTAGGG)3A2] (Tel26) and d[(TTAGGG)4T2] (wtTel26), under dilute and crowding conditions. The SERS spectra distinctive of hybrid-1 and hybrid-2 G-quadruplexes of Tel26 and wtTel26, respectively, were observed for the sequences folded in the presence of K+ ions (110 mM) in a buffered solution, representing the diluted medium. Polyethylene glycol (5, 10, 15, 20, and 40% v/v PEG) was used to create a molecular-crowded environment, resulting in the formation of the parallel G-quadruplexes of both studied human telomeric sequences. Despite extensive overlap by the crowding agent bands, the SERS spectral features indicative of parallel G4 form of Tel26 were recognized. The obtained results implied that SERS of G-quadruplexes reflected not only the primary structure of the studied human telomeric sequence, including its nucleobase composition and sequence, but also its secondary structure in the sense of Hoogsteen hydrogen bonds responsible for the guanine tetrad formation, and finally its tertiary structure, defining a three-dimensional DNA shape, positioned close to the enhancing metallic surface. Graphical abstract.
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Affiliation(s)
- Francesco Papi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy. .,Department NEUROFARBA - Pharmaceutical and Nutraceutical Section, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy.
| | - Adriana Kenđel
- Division of Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia
| | - Marina Ratkaj
- Teva Pharmaceutical Industries Ltd., Research and Development, PLIVA Croatia, Prilaz baruna Filipovića 29, 10000, Zagreb, Croatia
| | - Ivo Piantanida
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10002, Zagreb, Croatia
| | - Paola Gratteri
- Department NEUROFARBA - Pharmaceutical and Nutraceutical Section, Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Carla Bazzicalupi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
| | - Snežana Miljanić
- Division of Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000, Zagreb, Croatia.
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Nativi C, Papi F, Roelens S. Tn antigen analogues: the synthetic way to “upgrade” an attracting tumour associated carbohydrate antigen (TACA). Chem Commun (Camb) 2019; 55:7729-7736. [DOI: 10.1039/c9cc02920f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Herein, we report various synthetic strategies used to boost the Tn antigen immune response and elicit an effective and long-lasting response.
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Affiliation(s)
- Cristina Nativi
- Department of Chemistry
- University of Florence
- I-50119 Sesto F. no (FI)
- Italy
| | - Francesco Papi
- Department of Chemistry
- University of Florence
- I-50119 Sesto F. no (FI)
- Italy
| | - Stefano Roelens
- Department of Chemistry and INSTM
- University of Florence
- Polo Scientifico e Tecnologico
- I-50019 Sesto Fiorentino
- Firenze
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21
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Guarra F, Marzo T, Ferraroni M, Papi F, Bazzicalupi C, Gratteri P, Pescitelli G, Messori L, Biver T, Gabbiani C. Interaction of a gold(i) dicarbene anticancer drug with human telomeric DNA G-quadruplex: solution and computationally aided X-ray diffraction analysis. Dalton Trans 2018; 47:16132-16138. [DOI: 10.1039/c8dt03607a] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Solution and solid-state data give a quite clear picture for a bis carbene gold(i) complex having perspective anticancer properties.
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Affiliation(s)
- Federica Guarra
- Department of Chemistry and Industrial Chemistry
- University of Pisa
- 56124 Pisa
- Italy
| | - Tiziano Marzo
- Department of Chemistry and Industrial Chemistry
- University of Pisa
- 56124 Pisa
- Italy
- MetMed Lab
| | - Marta Ferraroni
- Department of Chemistry “U. Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Francesco Papi
- Department of Chemistry “U. Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Carla Bazzicalupi
- Department of Chemistry “U. Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Paola Gratteri
- Department NEUROFARBA – Pharmaceutical and nutraceutical section; Laboratory of Molecular Modeling Cheminformatics & QSAR
- University of Firenze
- 50019 Sesto Fiorentino, Firenze
- Italy
| | - Gennaro Pescitelli
- Department of Chemistry and Industrial Chemistry
- University of Pisa
- 56124 Pisa
- Italy
| | - Luigi Messori
- MetMed Lab
- Department of Chemistry “U. Schiff”
- University of Florence
- 50019 Sesto Fiorentino
- Italy
| | - Tarita Biver
- Department of Chemistry and Industrial Chemistry
- University of Pisa
- 56124 Pisa
- Italy
| | - Chiara Gabbiani
- Department of Chemistry and Industrial Chemistry
- University of Pisa
- 56124 Pisa
- Italy
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22
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Papi F, Ferraroni M, Rigo R, Da Ros S, Bazzicalupi C, Sissi C, Gratteri P. Role of the Benzodioxole Group in the Interactions between the Natural Alkaloids Chelerythrine and Coptisine and the Human Telomeric G-Quadruplex DNA. A Multiapproach Investigation. J Nat Prod 2017; 80:3128-3135. [PMID: 29148767 DOI: 10.1021/acs.jnatprod.7b00350] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The binding properties toward the human telomeric G-quadruplex of the two natural alkaloids coptisine and chelerythrine were studied using spectroscopic techniques, molecular modeling, and X-ray diffraction analysis. The results were compared with reported data for the parent compounds berberine and sanguinarine. Spectroscopic studies showed modest, but different rearrangements of the DNA-ligand complexes, which can be explained considering particular stereochemical features for these alkaloids, in spite of the similarity of their skeletons. In fact, the presence of a dioxolo moiety rather than the two methoxy functions improves the efficiency of coptisine and sanguinarine in comparison to berberine and chelerythrine, and the overall stability trend is sanguinarine > chelerythrine ≈ coptisine > berberine. Accordingly, the X-ray diffraction analysis confirmed the involvement of the benzodioxolo groups in the coptisine/DNA binding by means of π···π, O···π, and CH···O interactions. Similar information is provided by modeling studies, which, additionally, evidenced reasons for the quadruplex vs double-helix selectivity shown by these alkaloids. Thus, the analyses shed light on the key role of the benzodioxolo moieties in strengthening the interaction with the G4-folded human telomeric sequence and indicated the superior G4 stabilizing properties of the benzophenanthridine scaffold with respect to the protoberberine one and conversely the better G4 vs dsDNA selectivity profile of coptisine over the other alkaloids.
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Affiliation(s)
- F Papi
- Department of Chemistry "U. Schiff", University of Florence , Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
- Department Neurofarba-Pharmaceutical and Nutraceutical Section and Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence , Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - M Ferraroni
- Department of Chemistry "U. Schiff", University of Florence , Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - R Rigo
- Department of Pharmaceutical and Pharmacological Science, University of Padua , Via F. Marzolo 5, 35131 Padua, Italy
| | - S Da Ros
- Department of Pharmaceutical and Pharmacological Science, University of Padua , Via F. Marzolo 5, 35131 Padua, Italy
| | - C Bazzicalupi
- Department of Chemistry "U. Schiff", University of Florence , Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - C Sissi
- Department of Pharmaceutical and Pharmacological Science, University of Padua , Via F. Marzolo 5, 35131 Padua, Italy
| | - P Gratteri
- Department Neurofarba-Pharmaceutical and Nutraceutical Section and Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence , Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
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Papi F, Bazzicalupi C, Ferraroni M, Massai L, Bertrand B, Gratteri P, Colangelo D, Messori L. [Au(9-methylcaffein-8-ylidene)2
]+
/DNA Tel23 System: Solution, Computational, and Biological Studies. Chemistry 2017; 23:13784-13791. [DOI: 10.1002/chem.201702854] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Francesco Papi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI Italy
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco, Salute del Bambino (NEUROFARBA); Laboratory of Molecular Modeling Cheminformatics & QSAR; Università degli Studi di Firenze; Via Ugo Schiff 6 50019 Sesto Fiorentino (FI Italy
| | - Carla Bazzicalupi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI Italy
| | - Marta Ferraroni
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI Italy
| | - Lara Massai
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI Italy
| | | | - Paola Gratteri
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco, Salute del Bambino (NEUROFARBA); Laboratory of Molecular Modeling Cheminformatics & QSAR; Università degli Studi di Firenze; Via Ugo Schiff 6 50019 Sesto Fiorentino (FI Italy
| | - Donato Colangelo
- Dipartimento di Scienze della Salute; Università del Piemonte Orientale ‘A. Avogadro'; Via Solaroli 17 28100 Novara Italy
| | - Luigi Messori
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI Italy
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Wirmer-Bartoschek J, Bendel LE, Jonker HRA, Grün JT, Papi F, Bazzicalupi C, Messori L, Gratteri P, Schwalbe H. Solution NMR Structure of a Ligand/Hybrid-2-G-Quadruplex Complex Reveals Rearrangements that Affect Ligand Binding. Angew Chem Int Ed Engl 2017; 56:7102-7106. [DOI: 10.1002/anie.201702135] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 03/31/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Julia Wirmer-Bartoschek
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - Lars Erik Bendel
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - Hendrik R. A. Jonker
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - J. Tassilo Grün
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - Francesco Papi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Carla Bazzicalupi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Luigi Messori
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Paola Gratteri
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco; Salute del Bambino (NEUROFARBA); Università degli Studi di Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino Italy
| | - Harald Schwalbe
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
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Wirmer-Bartoschek J, Bendel LE, Jonker HRA, Grün JT, Papi F, Bazzicalupi C, Messori L, Gratteri P, Schwalbe H. Solution NMR Structure of a Ligand/Hybrid-2-G-Quadruplex Complex Reveals Rearrangements that Affect Ligand Binding. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702135] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Julia Wirmer-Bartoschek
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - Lars Erik Bendel
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - Hendrik R. A. Jonker
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - J. Tassilo Grün
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
| | - Francesco Papi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Carla Bazzicalupi
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Luigi Messori
- Dipartimento di Chimica “Ugo Schiff”; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino (FI) Italy
| | - Paola Gratteri
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco; Salute del Bambino (NEUROFARBA); Università degli Studi di Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino Italy
| | - Harald Schwalbe
- Institute for Organic Chemistry and Chemical Biology; Center of Biomolecular Magnetic Resonance (BMRZ); Goethe University Frankfurt/Main; Max-von-Laue-Strasse 7 60439 Frankfurt Germany
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Murdolo G, Tortoioli C, Celi F, Bini V, Papi F, Brozzetti A, Falorni A. Fetuin-A, adiposity-linked insulin resistance and responsiveness to an educational-based weight excess reduction program: a population-based survey in prepubertal schoolchildren. Endocrine 2017; 56:357-365. [PMID: 27388590 DOI: 10.1007/s12020-016-1009-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 05/28/2016] [Indexed: 10/21/2022]
Abstract
The secreted hepatokine fetuin-A emerges as an independent predictor of type 2 diabetes in adulthood. The overall aims of this study were: (1) to investigate the associations of fetuin-A with adiposity and insulin resistance, as well as its relationship with adipokines, in prepubertal children, and, (2) to evaluate whether, in prepubertal obesity, serum fetuin-A levels may either change or predict the responsiveness to an educational-based weight excess reduction program. We studied 200 prepubertal children (boys/girls: 89/111; Tanner stage 1; age: 5-13 years), included in a cohort of 44,231 adolescents who participated in an extensive Italian school-based survey. According to Cole's criteria, 100 individuals were lean (boys/girls: 57/43) and 100 obese (boys/girls: 54/46). A subset of 53 obese individuals (boys/girls: 28/25; age: 6-12 years) were also evaluated after a weight excess reduction program. Serum fetuin-A, leptin, total and high molecular weight adiponectin levels, as well as homeostasis model assessment of insulin resistance were assessed. When compared with lean, obese children exhibited higher ( p < 0.0001) fetuin-A concentrations, without differences between sex. Fetuin-A was positively associated with adiposity, homeostasis model assessment of insulin resistance, and leptin levels. In multivariate analysis, the associations between fetuin-A and leptin or homeostasis model assessment of insulin resistance lost the significance after adjustment for BMI Z-score, which, in turn, represented an independent determinant of fetuin-A (R 2adj 0.327; p < 0.0001). Notably, after weight excess reduction program, fetuin-A levels dropped ( p < 0.0001 vs. basal). Interestingly, no significant differences of fetuin-A concentrations between responders and no responders were found. In prepubertal children, fetuin-A represents an early marker of adiposity, and its reduction after lifestyle intervention may partly contribute to the beneficial effects of weight excess reduction program.
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Affiliation(s)
- Giuseppe Murdolo
- Department of Internal Medicine, Assisi Hospital, Assisi, Perugia, Italy.
- Department of Medicine, University of Perugia, Perugia, Italy.
| | | | - Federica Celi
- Department of Pediatrics, Neonatology Intensive Care, Azienda Ospedaliera S. Maria, Terni, Italy
| | - Vittorio Bini
- Department of Medicine, University of Perugia, Perugia, Italy
| | - Francesco Papi
- Department of Medicine, University of Perugia, Perugia, Italy
| | | | - Alberto Falorni
- Department of Medicine, University of Perugia, Perugia, Italy
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27
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De Giorgi V, Savarese I, D'Errico A, Gori A, Papi F, Grazzini M, Scarfì F, Covarelli P. Teledermoscopy for skin cancer screening. J Eur Acad Dermatol Venereol 2016; 31:e71. [PMID: 27256578 DOI: 10.1111/jdv.13731] [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: 11/30/2022]
Affiliation(s)
- V De Giorgi
- Division Dermatology, Department of Surgery and Traslational Medicine, University of Florence, Florence, Italy
| | - I Savarese
- Division Dermatology, Department of Surgery and Traslational Medicine, University of Florence, Florence, Italy
| | - A D'Errico
- Division Dermatology, Department of Surgery and Traslational Medicine, University of Florence, Florence, Italy
| | - A Gori
- Division Dermatology, Department of Surgery and Traslational Medicine, University of Florence, Florence, Italy
| | - F Papi
- Division Dermatology, Department of Surgery and Traslational Medicine, University of Florence, Florence, Italy
| | - M Grazzini
- Division Dermatology, Department of Surgery and Traslational Medicine, University of Florence, Florence, Italy
| | - F Scarfì
- Division Dermatology, Department of Surgery and Traslational Medicine, University of Florence, Florence, Italy
| | - P Covarelli
- Department of Surgery, University of Perugia, Perugia, Italy
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28
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Ferraroni M, Bazzicalupi C, Papi F, Fiorillo G, Guamán-Ortiz LM, Nocentini A, Scovassi AI, Lombardi P, Gratteri P. Solution and Solid-State Analysis of Binding of 13-Substituted Berberine Analogues to Human Telomeric G-quadruplexes. Chem Asian J 2016; 11:1107-15. [DOI: 10.1002/asia.201600116] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Marta Ferraroni
- Department of Chemistry; University of Florence; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Carla Bazzicalupi
- Department of Chemistry; University of Florence; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Francesco Papi
- Department of Chemistry; University of Florence; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
- Department NEUROFARBA-Pharmaceutical and nutraceutical section; Laboratory of Molecular Modeling Cheminformatics&QSAR; University of Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino, Firenze Italy
| | - Gaetano Fiorillo
- Naxospharma srl; via G. Di Vittorio, 70 20026 Novate Milanese Italy
| | - Luis Miguel Guamán-Ortiz
- Universidad Técnica Particular de Loja; Departamento de Ciencias de la Salud; San Cayetano Alto Calle Paris 1101608 Loja Ecuador
- Istituto di Genetica Molecolare del CNR, Via Abbiategrasso 207; 27100 Pavia Italy
| | - Alessio Nocentini
- Department NEUROFARBA-Pharmaceutical and nutraceutical section; Laboratory of Molecular Modeling Cheminformatics&QSAR; University of Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino, Firenze Italy
| | - Anna Ivana Scovassi
- Istituto di Genetica Molecolare del CNR, Via Abbiategrasso 207; 27100 Pavia Italy
| | - Paolo Lombardi
- Naxospharma srl; via G. Di Vittorio, 70 20026 Novate Milanese Italy
| | - Paola Gratteri
- Department NEUROFARBA-Pharmaceutical and nutraceutical section; Laboratory of Molecular Modeling Cheminformatics&QSAR; University of Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino, Firenze Italy
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29
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Bazzicalupi C, Ferraroni M, Papi F, Massai L, Bertrand B, Messori L, Gratteri P, Casini A. Determinants for Tight and Selective Binding of a Medicinal Dicarbene Gold(I) Complex to a Telomeric DNA G-Quadruplex: a Joint ESI MS and XRD Investigation. Angew Chem Int Ed Engl 2016; 55:4256-9. [DOI: 10.1002/anie.201511999] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Carla Bazzicalupi
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Marta Ferraroni
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Francesco Papi
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco, Salute del Bambino (NEUROFARBA); Università degli Studi di Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino FI Italy
| | - Lara Massai
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | | | - Luigi Messori
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Paola Gratteri
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco, Salute del Bambino (NEUROFARBA); Università degli Studi di Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino FI Italy
| | - Angela Casini
- School of Chemistry; Cardiff University; Cardiff CF103AT UK
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Bazzicalupi C, Ferraroni M, Papi F, Massai L, Bertrand B, Messori L, Gratteri P, Casini A. Determinants for Tight and Selective Binding of a Medicinal Dicarbene Gold(I) Complex to a Telomeric DNA G-Quadruplex: a Joint ESI MS and XRD Investigation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511999] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Carla Bazzicalupi
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Marta Ferraroni
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Francesco Papi
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco, Salute del Bambino (NEUROFARBA); Università degli Studi di Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino FI Italy
| | - Lara Massai
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | | | - Luigi Messori
- Dipartimento di Chimica ‘Ugo Schiff'; Università degli Studi di Firenze; Via della Lastruccia 3 50019 Sesto Fiorentino FI Italy
| | - Paola Gratteri
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco, Salute del Bambino (NEUROFARBA); Università degli Studi di Firenze; via Ugo Schiff 6 50019 Sesto Fiorentino FI Italy
| | - Angela Casini
- School of Chemistry; Cardiff University; Cardiff CF103AT UK
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Savarese I, Papi F, D'Errico A, Gori A, Grazzini M, Vannucchi M, Massi D, De Giorgi V. Acral lentiginous melanoma treated with topical imiquimod cream: possible cooperation between drug and tumour cells. Clin Exp Dermatol 2014; 40:27-30. [DOI: 10.1111/ced.12469] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2014] [Indexed: 11/30/2022]
Affiliation(s)
- I. Savarese
- Department of Dermatology; University of Florence; Florence Italy
| | - F. Papi
- Department of Dermatology; University of Florence; Florence Italy
| | - A. D'Errico
- Department of Dermatology; University of Florence; Florence Italy
| | - A. Gori
- Department of Dermatology; University of Florence; Florence Italy
| | - M. Grazzini
- Department of Dermatology; University of Florence; Florence Italy
| | - M. Vannucchi
- Division of Pathological Anatomy; Department of Surgery and Translational Medicine; University of Florence; Florence Italy
| | - D. Massi
- Division of Pathological Anatomy; Department of Surgery and Translational Medicine; University of Florence; Florence Italy
| | - V. De Giorgi
- Division of Pathological Anatomy; Department of Surgery and Translational Medicine; University of Florence; Florence Italy
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De Giorgi V, Savarese I, D'Errico A, Gori A, Papi F, Colombino M, Sini MC, Stanganelli I, Palmieri G, Massi D. CDKN2A mutations could influence the dermoscopic pattern of presentation of multiple primary melanoma: a clinical dermoscopic genetic study. J Eur Acad Dermatol Venereol 2014; 29:574-80. [PMID: 25200134 DOI: 10.1111/jdv.12643] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 06/17/2014] [Indexed: 01/02/2023]
Abstract
BACKGROUND Patients who develop cutaneous melanoma are at increased risk of developing a second primary melanoma. There are many aetiological reasons by which the risk of a second melanoma increases. Among others, genetic factors may contribute to modulating this risk. The risk of identifying a CDKN2A germline mutation increases with the number of primary melanomas and with the presence of familial history of melanoma. Patients with melanoma are especially encouraged to have regular follow-up visits with their dermatologist to perform clinical and dermatoscopic examination. In particular, dermoscopy could be very useful in multiple primary melanoma (MPM) patients. OBJECTIVES To analyse the clinical and dermatoscopic features of multiple melanomas, focusing on those features that are more frequently found in the same patient to recognize them earlier and understand whether they appear with the similar peculiar dermatoscopic features, especially in CDKN2A carriers. METHODS Medical records of MPM patients were selected from a database including 1065 patients with histopathologically proven melanoma diagnosis, all treated at the dermatology clinic of the University of Florence from 2000 to 2013. Pictures of melanoma were independently and blindly administered to three dermatologist experts in dermoscopy to evaluate the presence or absence of ABCD criteria for each clinical image, and the main pattern for the dermoscopic images. The results were then analyzed and crossed to rate the clinical and dermoscopic features of MPM. RESULTS Seventy five (7.0%) of 1065 patients included in our database were found to carry an MPM disease. Among them, we selected 12 (16%) patients with three or more MPMs. The presence of the CDKN2A melanoma susceptibility gene was observed in 4/12 (33.33%) patients; two patients presented the C500G and c.5 + 1delG polymorphisms in the CDKN2A gene. In CDKN2A carriers, each patient showed a similar and specific dermatoscopic pattern in their lesions. CONCLUSIONS Even being aware of the limitations of this study, according to hereditary characters and their modes of transmissions, we could speculate that for each patient with a CDKN2A germline mutation, it is possible to find the same kind of dermoscopical pattern among their melanocytic tumours.
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Affiliation(s)
- V De Giorgi
- Division Dermatology, Dept. of Surgery and Translational Medicine, University of Florence, Florence, Italy
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De Giorgi V, Papi F, Giorgi L, Savarese I, Verdelli A, Scarfì F, Gandini S. Skin self-examination and the ABCDE rule in the early diagnosis of melanoma: is the game over? Br J Dermatol 2014; 168:1370-1. [PMID: 23738643 DOI: 10.1111/bjd.12250] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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de Giorgi V, Gori A, Gandini S, Papi F, Grazzini M, Rossari S, Simoni A, Maio V, Massi D. Oestrogen receptor beta and melanoma: a comparative study. Br J Dermatol 2013; 168:513-9. [PMID: 23013061 DOI: 10.1111/bjd.12056] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Oncological research has focused on evaluating oestrogen receptors (ERs) in oestrogen-related tumours, and understanding the potential role of ERs in the pathophysiology of cancer. OBJECTIVES To investigate the significance of oestrogen receptor beta (ERβ) in melanoma. METHODS We prospectively evaluated ERβ expression in malignant melanoma (MM) tissue and adjacent healthy skin by quantitative immunohistochemistry at the Department of Dermatology of the University of Florence, from 1998 to 2010. RESULTS ERβ was detected with varying staining intensity in the 66 malignant melanocytic lesions. After adjusting for age and sex, we found that ERβ expression was significantly lower in melanoma tissue compared with adjacent healthy skin (P < 0·0001). We also found significantly lower ERβ levels in thick melanoma tissue compared with thin melanoma tissue. In addition, there was a positive association between Breslow thickness and the difference of ERβ expression between healthy tissue and melanoma tissue (P = 0·0004). Consistent with sex differences in melanoma survival, men showed significantly lower levels of ERβ than women in both melanoma (P = 0·05) and healthy tissues (P = 0·02). CONCLUSIONS ERβ expression is inversely associated with Breslow thickness and is significantly influenced by sex in MM.
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Affiliation(s)
- V de Giorgi
- Department of Dermatology Department of Critical Care Medicine and Surgery, Division of Pathology, University of Florence, Florence, Italy.
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de Giorgi V, Rossari S, Papi F, Buzzoni C, Gori A, Grazzini M, Savarese I, Crocetti E, Longo AS, Massi D. Risk of second primary melanoma: how should be long follow-up be? Ratio of observed and expected cases. J Eur Acad Dermatol Venereol 2011; 26:1454-5. [PMID: 22070500 DOI: 10.1111/j.1468-3083.2011.04334.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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de Giorgi V, Rossari S, Papi F, Gori A, Alfaioli B, Grazzini M, Crocetti E, Verdelli A, Foo CW, Lotti T. Multiple primary melanoma: the impact of atypical naevi and follow up. Br J Dermatol 2011; 163:1319-22. [PMID: 20670298 DOI: 10.1111/j.1365-2133.2010.09961.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Patients with melanoma are especially encouraged to have regular follow- up visits with their dermatologist and to perform total-body skin examination on a routine basis to identify new pigmented lesions or detect significant changes in existing naevi. OBJECTIVES To identify main risk factors (sex, age, number of common and atypical naevi, family history, phototype) associated with multiple primary melanomas (MPM) and to investigate the association between regular follow up and tumour thickness of a second primary melanoma. METHODS We performed a retrospective analysis of patients with MPM in order to evaluate risk factors for developing a second primary melanoma. Medical records of patients with melanoma who developed a second primary melanoma were selected from a database of all patients with histopathologically confirmed melanoma treated at the dermatology clinic of the University of Florence, Italy, from 2000 to 2004. Medical data culled from the patient records were as follows: medical history, number of typical naevi, presence of atypical naevi, Breslow thickness, Clark level and histotype of the melanomas, site of the melanomas and patient adherence to 6-month follow-up examinations. RESULTS The presence of atypical naevi was associated with a higher risk of developing MPM (adjusted odds ratio 3·28, 95% confidence interval 1·35–7·44). Moreover, in the subjects who did not attend follow up, we noted that the thickness of the second melanoma was significantly higher, with a mean thickness of 1·22 mm, in comparison with patients with a careful adherence to follow up in whom the mean thickness was 0·36 mm (P = 0·0189). CONCLUSIONS For the first time, the validity of this clinical approach has been supported by real comparison of thickness levels of second melanoma in patients with or without periodical follow up. Results obtained from this analysis show that follow up is an effective method for early detection of melanoma.
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Affiliation(s)
- V de Giorgi
- Department of Dermatology, University of Florence, Via Alfani 37, Florence 50100, Italy.
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Murdolo G, Nowotny B, Celi F, Donati M, Bini V, Papi F, Gornitzka G, Castellani S, Roden M, Falorni A, Herder C, Falorni A. Inflammatory adipokines, high molecular weight adiponectin, and insulin resistance: a population-based survey in prepubertal schoolchildren. PLoS One 2011; 6:e17264. [PMID: 21365005 PMCID: PMC3041818 DOI: 10.1371/journal.pone.0017264] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Accepted: 01/26/2011] [Indexed: 01/01/2023] Open
Abstract
Background The aim of this study was to investigate sex differences and associations of high molecular weight (HMW) adiponectin, leptin and proinflammatory adipokines, individually or in combinations, with adiposity and insulin resistance (IR) measures in prepubertal childhood. Methodology We studied 305 prepubertal children (boys/girls: 144/161; Tanner stage 1; age: 5-13 yr), included in a cohort of 44,231 adolescents who participated in an extensive Italian school-based survey. According to Cole's criteria, 105 individuals were lean (L; boys/girls: 59/46), 60 overweight (OW; boys/girls: 32/28) and 140 obese (OB; boys/girls: 70/70). Measurements comprised total and HMW adiponectin, leptin, as well as a panel of proinflammatory adipokines/chemokines associated with diabetes risk. Principal Findings Leptin-, and the leptin-to-HMW adiponectin ratio (L/HMW)-, increased progressively (p<0.0001) from L to OW to OB boys and girls. When compared with L peers, OW and OB girls exhibited lower (p<0.001) HMW adiponectin levels, while in boys the HMW multimers did not differ significantly across the BMI-stratified groups. OB girls displayed higher (p<0.05) IL-8, IL-18, monocyte chemoattractant protein-1 (MCP-1) and soluble intercellular adhesion molecule-1 levels (sICAM-1) than L girls, whereas increased macrophage migration inhibitory factor (MIF) concentrations in OB vs OW boys were seen. HMW adiponectin (negatively), leptin or inflammatory markers (positively) correlated with adiposity and IR measures. In multivariate models, leptin represented a strong and independent determinant of HOMA-IR (R2 0.378; p<0.01). Adjustment for age, BMIz-score, lipids and inflammatory mediators abolished the association between leptin and HOMA-IR in boys, while in girls leptin remained still a significant predictor of IR (R2 0.513; p<0.01). Finally, in both sexes, the joint effect of the L/HMW did not improve the prediction of basal IR as compared with leptin levels alone, which were mainly explained by the BMIz-score. Conclusions In prepubertal children, leptin emerges as a sex-independent discrimination marker of adiposity degree and as a useful, sex-associated predictor of the systemic insulin resistance.
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Affiliation(s)
- Giuseppe Murdolo
- Section of Internal Medicine, Endocrine and Metabolic Sciences, Department of Internal Medicine, Perugia University, Perugia, Italy.
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De Giorgi V, Grazzini M, Rossari S, Gori A, Alfaioli B, Papi F, Savarese I, Cervadoro E, Lotti T. Adding dermatoscopy to naked eye examination of equivocal melanocytic skin lesions: effect on intention to excise by general dermatologists. Clin Exp Dermatol 2010; 36:255-9. [DOI: 10.1111/j.1365-2230.2010.03963.x] [Citation(s) in RCA: 10] [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: 11/29/2022]
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Mariti C, Papi F, Mengoli M, Zilocchi M, Giambanco P, Gazzano A. Analysis of the cooperation between veterinary behaviorists and dog trainers in resolving canine behavioral problems. J Vet Behav 2010. [DOI: 10.1016/j.jveb.2009.10.038] [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: 10/20/2022]
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de Giorgi V, Sestini S, Mannone F, Papi F, Alfaioli B, Gori A, Lotti T. The use of silicone gel in the treatment of fresh surgical scars: a randomized study. Clin Exp Dermatol 2009; 34:688-93. [DOI: 10.1111/j.1365-2230.2008.03096.x] [Citation(s) in RCA: 32] [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] [Indexed: 11/28/2022]
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de Giorgi V, Alfaioli B, Franchi A, Gori A, Sestini S, Papi F, Lotti T. Cellular neurothekeoma in a girl: could oestrogens favour the development and growth of this rare tumour? J Eur Acad Dermatol Venereol 2008; 22:1149-50. [PMID: 18462302 DOI: 10.1111/j.1468-3083.2008.02595.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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De Giorgi V, Sestini S, Massi D, Panelos J, Papi F, Alfaioli B, Lotti T. Acquired pseudoclubbing of a fingernail caused by spontaneous subungual haemangioma. J Eur Acad Dermatol Venereol 2008; 22:1501-3. [PMID: 18482313 DOI: 10.1111/j.1468-3083.2008.02686.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
It is a common experience that many Spitz naevi deviate from the idealized or stereotypical representation found in the literature, often causing considerable difficulties in distinguishing them from melanoma. The diagnostic term 'atypical Spitz naevus' is used to describe lesions that deviate from the typical appearance of Spitz naevi and which have an uncertain biological significance and prognosis. The term 'Spitz tumour' has been proposed for these lesions, as the term 'naevus' indicates a lesion that is completely benign and presents no risk to the patient. We present a case of atypical Spitz tumour with peculiar atypical clinical and dermatoscopic features. The difficulty in managing this Spitz tumour was aggravated by the clinical diagnosis. In fact, the lesion appeared as a benign and nonmelanocytic lesion, a pigmented dermatofibroma. Our case underlines the difficulties present in the controversial chapter of spitzoid melanocytic lesions. The atypical Spitz tumour is a 'chameleon' lesion that can mimic not only melanocytic, but also nonmelanocytic lesions.
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Affiliation(s)
- V de Giorgi
- Department of Dermatology, University of Florence, Florence, Italy.
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Celi F, Bini V, Papi F, Santilli E, Castellani MS, Ferretti A, Mencacci M, Berioli MG, De Giorgi G, Falorni A. Circulating adipocytokines in non-diabetic and Type 1 diabetic children: relationship to insulin therapy, glycaemic control and pubertal development. Diabet Med 2006; 23:660-5. [PMID: 16759309 DOI: 10.1111/j.1464-5491.2006.01823.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM To determine the influence of Type 1 diabetes mellitus on circulating adipocytokines in children. METHODS The circulating concentrations of leptin, adiponectin, resistin and tumour necrosis factor (TNF)-alpha were measured in 91 children, aged 11.1 +/- 2.7 years, with Type 1 diabetes mellitus (T1DM). Ninety-one healthy children were selected as control subjects. RESULTS Body mass index-adjusted leptin concentrations were higher in the pubertal diabetic children compared with the control children. There was a significant positive correlation between leptin and daily insulin dose in the diabetic group. Circulating adiponectin concentrations were higher in the prepubertal diabetic children and were positively associated with HbA(1c). Resistin concentrations were lower in the prepubertal non-diabetic subjects compared with the pubertal non-diabetic children, whose values were higher than those of the diabetic children. TNF-alpha concentrations were similar in non-diabetic and diabetic children. CONCLUSIONS Circulating concentrations of adipocytokines are abnormal in Type 1 diabetic children, although the direction of change differs by cytokine. Pubertal development, in addition to insulin treatment and glycaemic control, also influences the concentrations.
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Affiliation(s)
- F Celi
- Department of Medical-Surgical Specialties and Public Health, Section of Paediatrics, University of Perugia, Perugia, Italy
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Celi F, Galmacci G, Bini V, Papi F, Contessa G, Falorni A. BMI-conditional standard of leptin serum values in children: proposal of a statistical procedure for the analysis of influencing variables. J Pediatr Endocrinol Metab 2005; 18:1399-408. [PMID: 16459466 DOI: 10.1515/jpem.2005.18.12.1399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In order to define serum leptin values in children, its concentration was assayed in 3,453 children, 5-14 years old, and body mass index (BMI) and pubertal development were recorded. Insulin, testosterone (in males) and 17beta-estradiol (in females), the sum of four skinfold thicknesses (SST), waist-to-hip ratio, and body fat mass were also determined in 1,601 children. Analysis of multicollinearity effects on estimated models demonstrated a quasi-linear correlation between SST and BMI, the former being prevalent. Although other variables were strongly correlated with leptin, assuming only SST as predictor, R2 yielded a value of 0.711 in males and 0.607 in females. When the other variables were added, R2 increased by about 0.03 in both sexes. BMI and SST were the most important of all the predictors and each can act as a sort of proxy for the others. When the z-scores of BMI of all 3,453 children were subdivided into deciles, any correlation with leptin was no more significant inside each BMI z-score range. This study demonstrates that subcutaneous fat mass may be considered the prevalent determinant factor. The adopted statistical procedure furnished results useful for reference values based on BMI z-score as a simple and appropriate evaluation for serum leptin concentrations in children.
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Affiliation(s)
- F Celi
- Department of Medical-Surgical Specialties and Public Health, University of Perugia, Italy
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Celi F, Bini V, Papi F, Santilli E, Ferretti A, Mencacci M, Berioli MG, De Giorgi G, Falorni A. Circulating acylated and total ghrelin and galanin in children with insulin-treated type 1 diabetes: relationship to insulin therapy, metabolic control and pubertal development. Clin Endocrinol (Oxf) 2005; 63:139-45. [PMID: 16060906 DOI: 10.1111/j.1365-2265.2005.02313.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To study the circulating levels of two gut-derived peptides in children with type 1 (insulin-dependent) diabetes mellitus (IDDM). RESEARCH DESIGN AND METHODS Plasma levels of ghrelin, both total ghrelin (TG) and the acylated form (AG), and galanin and their relationships with insulin dosage, metabolic control, IGFBP-1, body mass and pubertal development were evaluated in 91 children, aged 11.1 +/- 2.7 years, affected by IDDM and treated with insulin. Ninety-one healthy children were selected as controls. RESULTS Body mass index (BMI)-adjusted levels of both forms of ghrelin were reduced in IDDM compared with healthy subjects, with greater values in prepubertal than pubertal IDDM subjects. A negative association was found between AG and fasting insulin serum levels and insulin resistance [measured by using the homeostasis model assessment of insulin resistance (HOMA IR)] among the healthy children. IDDM children showed a negative association of their plasma ghrelin (both acylated and total) with daily insulin dosage, and the three adiposity indices (BMI, skinfold thickness and percentage fat mass). IGFBP-1 levels were higher among the IDDM children without any association with ghrelin serum values. BMI-adjusted plasma levels of galanin were higher among IDDM compared to healthy subjects, irrespective of sex or pubertal development. Greater values for galanin were found among pubertal than prepubertal subjects in both groups without any significant differences between the genders. A positive association was found between galanin and BMI in both groups and between galanin and haemoglobin A1c (HbA1c) among the IDDM children. No relationship existed between either galanin and fasting serum insulin among the healthy subjects or galanin and both insulin dosage or duration of treatment among the IDDM subjects. CONCLUSIONS The associations found between both ghrelin and galanin with adiposity indices could be considered as an indirect signal of involvement of the two peptides in the development of the nutritional status of the IDDM adolescents. The reduction in both forms of ghrelin could be involved in the development of the body mass increase of IDDM subjects with opposite effects, either influencing insulin sensitivity or exerting a compensatory restraint of feeding.
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Affiliation(s)
- F Celi
- Department of Gynaecological, Obstetric and Paediatric Sciences, University of Perugia, Italy
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Bini V, Igli Baroncelli G, Papi F, Celi F, Saggese G, Falorni A. Relationships of serum leptin levels with biochemical markers of bone turnover and with growth factors in normal weight and overweight children. Horm Res 2004; 61:170-5. [PMID: 14726619 DOI: 10.1159/000076134] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2003] [Accepted: 11/05/2003] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To examine the hypothesis of an influence of leptin on growth factors and on biochemical markers of bone turnover of prepubertal overweight children. DESIGN AND METHODS 395 prepubertal children, 6-13 years of age, were selected and the relationships between circulating serum levels of leptin and insulin-like growth factor I (IGF-I), insulin growth factor binding protein-3 (IGFBP-3) and some biochemical markers of bone turnover (osteocalcin, OC; carboxyterminal propeptide of type I procollagen, PICP, and carboxyterminal propeptide of type I collagen, ICTP) were analyzed. The subjects were subdivided into normal weight (NW, n = 163) and weight excess (WE, n = 232) subjects. RESULTS AND CONCLUSIONS Significant differences between the two groups were found for leptin (p < 0.01), IGF-I (p < 0.01) and IGFBP-3 (p < 0.01), with higher values in WEs, and for OC (p < 0.01) with higher values in NWs. A significant reduction of leptin (p < 0.01) and IGFBP-3 (p < 0.01) serum values and an increase of those of OC (p < 0.01) and PICP (p < 0.05), but not of ICTP, were registered in 103 WEs who showed a drop in weight excess during a weight-excess reduction program. No variations were observed in 26 non-responsive subjects. In a multivariate analysis in which leptin, corrected by BMI and sex, was the independent variable, a significant negative correlation was found with PICP (beta = -0.235, p < 0.01), IGF-I (beta = -0.180, p < 0.01) and height velocity (beta = -0.155, p < 0.01). There was no correlation with OC, ICTP and IGFBP-3. The results demonstrate that nutritional status and leptin levels are involved in the regulation of growth factors and biochemical markers of bone formation.
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Affiliation(s)
- Vittorio Bini
- Paediatric Endocrine and Diabetic Unit, Department of Gynaecologic, Obstetric and Paediatric Sciences, University of Perugia, Azienda Ospedaliera Policlinico Monteluce, Via Brunamonti, IT-06100 Perugia, Italy
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