1
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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] [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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2
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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] [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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3
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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] [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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4
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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] [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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5
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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] [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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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] [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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7
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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] [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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8
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Fallarini S, Brittoli A, Fiore M, Lombardi G, Renaudet O, Richichi B, Nativi C. Immunological characterization of a rigid α-Tn mimetic on murine iNKT and human NK cells. Glycoconj J 2017; 34:553-562. [DOI: 10.1007/s10719-017-9775-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/11/2017] [Accepted: 05/15/2017] [Indexed: 12/21/2022]
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