1
|
Guareschi F, Del Favero E, Ricci C, Cantù L, Brandolini M, Sambri V, Nicoli S, Pescina S, D'Angelo D, Rossi I, Buttini F, Bettini R, Sonvico F. Cyclosporine A micellar nasal spray characterization and antiviral action against SARS-CoV-2. Eur J Pharm Sci 2024; 193:106673. [PMID: 38103657 DOI: 10.1016/j.ejps.2023.106673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 12/19/2023]
Abstract
The upper airways represent the point of entrance from where Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection spreads to the lungs. In the present work, α-tocopheryl-polyethylene-glycol succinate (TPGS) micelles loaded with cyclosporine A (CSA) were developed for nasal administration to prevent or treat the viral infection in the very first phases. The behavior of the micelles in presence of simulated nasal mucus was investigated in terms of stability and mucopenetration rate, evidencing long-term stability and fast diffusion across the glycoproteins matrix. Moreover, the spray characteristics of the micellar formulation and deposition profile in a silicon nasal model were studied using three nasal spray devices. Results allowed to identify the nasal spray pump (BiVax, Aptar) able to provide the wider and uniform deposition of the nasal cavity. The cyclosporine A micelles antiviral activity against SARS-CoV-2 was tested on the Omicron BA.1 variant using Vero E6 cells with protocols simulating treatment before, during and after the infection of the upper airways. Complete viral inactivation was observed for the cyclosporine-loaded micelles while a very low activity was evidenced for the non-formulated drug, suggesting a synergistic activity of the drug and the formulation. In conclusion, this work showed that the developed cyclosporine A-loaded micellar formulations have the potential to be clinically effective against a wide spectrum of coronavirus variants.
Collapse
Affiliation(s)
- Fabiola Guareschi
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/a, 43124 Parma, Italy
| | - Elena Del Favero
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Via Fratelli Cervi 93, 20054 Milan, Italy
| | - Caterina Ricci
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Via Fratelli Cervi 93, 20054 Milan, Italy
| | - Laura Cantù
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Via Fratelli Cervi 93, 20054 Milan, Italy
| | - Martina Brandolini
- Unit of Microbiology, The Great Romagna Hub Laboratory, Piazza della Liberazione 60, 47522 Pievesestina, Italy
| | - Vittorio Sambri
- Unit of Microbiology, The Great Romagna Hub Laboratory, Piazza della Liberazione 60, 47522 Pievesestina, Italy; Department of Experimental, Diagnostic and Specialty Medicine-DIMES, Alma Mater Studiorum-University of Bologna, Via Massarenti 1, 40138 Bologna, Italy
| | - Sara Nicoli
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/a, 43124 Parma, Italy
| | - Silvia Pescina
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/a, 43124 Parma, Italy
| | - Davide D'Angelo
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/a, 43124 Parma, Italy
| | - Irene Rossi
- Nanopharm Ltd, Franklin House, Grange Road, Cwmbran NP44 3WY, United Kingdom
| | - Francesca Buttini
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/a, 43124 Parma, Italy; Interdepartmental Center for Innovation in Health Products, Biopharmanet_TEC, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Ruggero Bettini
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/a, 43124 Parma, Italy; Interdepartmental Center for Innovation in Health Products, Biopharmanet_TEC, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Fabio Sonvico
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/a, 43124 Parma, Italy; Interdepartmental Center for Innovation in Health Products, Biopharmanet_TEC, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| |
Collapse
|
2
|
Rinaldi F, Hanieh PN, Maurizi L, Longhi C, Uccelletti D, Schifano E, Del Favero E, Cantù L, Ricci C, Ammendolia MG, Paolino D, Froiio F, Marianecci C, Carafa M. Neem Oil or Almond Oil Nanoemulsions for Vitamin E Delivery: From Structural Evaluation to in vivo Assessment of Antioxidant and Anti-Inflammatory Activity. Int J Nanomedicine 2022; 17:6447-6465. [PMID: 36573206 PMCID: PMC9789705 DOI: 10.2147/ijn.s376750] [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: 06/11/2022] [Accepted: 11/12/2022] [Indexed: 12/24/2022] Open
Abstract
Purpose Vitamin E (VitE) may be classified in "the first line of defense" against the formation of reactive oxygen species. Its inclusion in nanoemulsions (NEs) is a promising alternative to increase its bioavailability. The aim of this study was to compare O/W NEs including VitE based on Almond or Neem oil, showing themselves antioxidant properties. The potential synergy of the antioxidant activities of oils and vitamin E, co-formulated in NEs, was explored. Patients and Methods NEs have been prepared by sonication and deeply characterized evaluating size, ζ-potential, morphology (TEM and SAXS analyses), oil nanodroplet feature, and stability. Antioxidant activity has been evaluated in vitro, in non-tumorigenic HaCaT keratinocytes, and in vivo through fluorescence analysis of C. elegans transgenic strain. Moreover, on healthy human volunteers, skin tolerability and anti-inflammatory activity were evaluated by measuring the reduction of the skin erythema induced by the application of a skin chemical irritant (methyl-nicotinate). Results Results confirm that Vitamin E can be formulated in highly stable NEs showing good antioxidant activity on keratinocyte and on C. elegans. Interestingly, only Neem oil NEs showed some anti-inflammatory activity on healthy volunteers. Conclusion From the obtained results, Neem over Almond oil is a more appropriate candidate for further studies on this application.
Collapse
Affiliation(s)
- Federica Rinaldi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Rome, Italy
| | - Patrizia Nadia Hanieh
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Rome, Italy
| | - Linda Maurizi
- Dipartimento di Sanità pubblica e Malattie infettive, Sapienza Università di Roma, Rome, Italy
| | - Catia Longhi
- Dipartimento di Sanità pubblica e Malattie infettive, Sapienza Università di Roma, Rome, Italy
| | - Daniela Uccelletti
- Dipartimento di Biologia e Biotecnologie Charles Darwin, Sapienza Università di Roma, Rome, Italy
| | - Emily Schifano
- Dipartimento di Biologia e Biotecnologie Charles Darwin, Sapienza Università di Roma, Rome, Italy
| | - Elena Del Favero
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università di Milano, Milan, Italy
| | - Laura Cantù
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università di Milano, Milan, Italy
| | - Caterina Ricci
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università di Milano, Milan, Italy
| | - Maria Grazia Ammendolia
- Centro Nazionale Tecnologie Innovative in Sanità Pubblica, Istituto Superiore di Sanità, Rome, Italy
| | - Donatella Paolino
- Dipartimento di Medicina Sperimentale e Clinica, Università Magna Graecia di Catanzaro, Campus Universitario “S. Venuta”, Catanzaro, Italy
| | - Francesca Froiio
- Dipartimento di Medicina Sperimentale e Clinica, Università Magna Graecia di Catanzaro, Campus Universitario “S. Venuta”, Catanzaro, Italy
| | - Carlotta Marianecci
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Rome, Italy
| | - Maria Carafa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Rome, Italy,Correspondence: Maria Carafa; Carlotta Marianecci, Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzale Aldo Moro 5, Roma, 00185, Italy, Tel +390649913603; +390649913970, Fax +39064913133, Email ;
| |
Collapse
|
3
|
Ruggeri M, Vigani B, Boselli C, Icaro Cornaglia A, Colombo D, Sànchez-Espejo R, Del Favero E, Mandras N, Roana J, Cavallo L, Cantù L, Viseras C, Rossi S, Sandri G. Smart nano-in-microparticles to tackle bacterial infections in skin tissue engineering. Mater Today Bio 2022; 16:100418. [PMID: 36157051 PMCID: PMC9489812 DOI: 10.1016/j.mtbio.2022.100418] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 06/29/2022] [Revised: 08/31/2022] [Accepted: 09/02/2022] [Indexed: 11/17/2022] Open
Abstract
Chronic wounds (resulting from underlying disease, metabolic disorders, infections, trauma, and even tumours) pose significant health problems. In this work, microparticles, based on polysaccharides (maltodextrin or dextran) and amino acids, and doped with antibacterial nanoparticles (CuO or ZnO NPs) are designed. Smart nano-in-microparticles with a hierarchical 3D structure are developed. The ultimate goal aims at an innovative platform to achieve skin repair and to manage skin colonization by avoiding infection that could delay and even impair the healing process. The microparticles are prepared by spray-drying and cross-linked by heating, to obtain insoluble scaffolds able to facilitate cell proliferation in the wound bed. The nano-in-microparticles are characterized using a multidisciplinary approach: chemico-physical properties (SEM, SEM-EDX, size distribution, swelling and degradation properties, structural characterization - FTIR, XRPD, SAXS - mechanical properties, surface zeta potential) and preclinical properties (in vitro biocompatibility and whole-blood clotting properties, release studies and antimicrobial properties, and in vivo safety and efficacy on murine burn/excisional wound model) were assessed. The hierarchical 3D nano-in microparticles demonstrate to promote skin tissue repair in a preclinical study, indicating that this platform deserves particular attention and further investigation will promote the prototypes translation to clinics.
Collapse
Affiliation(s)
- Marco Ruggeri
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Barbara Vigani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Cinzia Boselli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Antonia Icaro Cornaglia
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, via Forlanini 2, 27100, Pavia, Italy
| | - Daniele Colombo
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Rita Sànchez-Espejo
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, Campus of Cartuja S/n, Granada, 18071, Spain
| | - Elena Del Favero
- Department of Medical Biotechnology and Translational Medicine, University of Milano, LITA, Via Fratelli Cervi 93, 20090, Segrate, Milano, Italy
| | - Narcisa Mandras
- Department of Public Health and Pediatric Sciences, University of Turin, 10126, Turin, Italy
| | - Janira Roana
- Department of Public Health and Pediatric Sciences, University of Turin, 10126, Turin, Italy
| | - Lorenza Cavallo
- Department of Public Health and Pediatric Sciences, University of Turin, 10126, Turin, Italy
| | - Laura Cantù
- Department of Medical Biotechnology and Translational Medicine, University of Milano, LITA, Via Fratelli Cervi 93, 20090, Segrate, Milano, Italy
| | - Cesar Viseras
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, Campus of Cartuja S/n, Granada, 18071, Spain
| | - Silvia Rossi
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Giuseppina Sandri
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| |
Collapse
|
4
|
De Luigi A, Colombo L, Russo L, Ricci C, Bastone A, Cimini S, Tagliavini F, Rossi G, Cantù L, Del Favero E, Salmona M. Biochemical and biophysical features of disease-associated tau mutants V363A and V363I. Biochim Biophys Acta Proteins Proteom 2022; 1870:140755. [PMID: 34999006 DOI: 10.1016/j.bbapap.2022.140755] [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] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/07/2021] [Accepted: 01/01/2022] [Indexed: 06/14/2023]
Abstract
The comprehension of pathogenetic mechanisms in tauopathy-associated neurodegenerative diseases can be improved by the knowledge of the biochemical and biophysical features of mutated tau proteins. Here, we used the full-length, wild-type tau, the V363A and V363I mutated species, associated with pathology, and the P301L mutated tau as a benchmark. Using several techniques, including small-angle X-ray scattering, atomic force microscopy, thioflavin T binding, and electrophoretic separation, we compared their course from intrinsically disordered monomers in solution to early-stage recruitment in complexes and then aggregates of increasing size over long periods up to the asymptotic aggregative behavior of full-length tau proteins. We showed that diversity in the kinetics of recruitment and aggregate structure occurs from the beginning and spreads all over their pathway to very large objects. The different extents of conformational changes and types of molecular assemblies among the proteins were also reflected in their in vitro toxicity; this variation could correlate with physiopathology in humans, considering that the P301L mutation is more aggressive than V363A, especially V363I. This study identified the presence of aggregation intermediates and corroborated the oligomeric hypothesis of tauopathies.
Collapse
Affiliation(s)
- Ada De Luigi
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute of Pharmacological Research IRCCS, Milano, Italy
| | - Laura Colombo
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute of Pharmacological Research IRCCS, Milano, Italy
| | - Luca Russo
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute of Pharmacological Research IRCCS, Milano, Italy
| | - Caterina Ricci
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milano, Italy
| | - Antonio Bastone
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute of Pharmacological Research IRCCS, Milano, Italy
| | - Sara Cimini
- Unit of Neurology V and Neuropathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milano, Italy
| | - Fabrizio Tagliavini
- Unit of Neurology V and Neuropathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milano, Italy
| | - Giacomina Rossi
- Unit of Neurology V and Neuropathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milano, Italy
| | - Laura Cantù
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milano, Italy
| | - Elena Del Favero
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milano, Italy.
| | - Mario Salmona
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute of Pharmacological Research IRCCS, Milano, Italy.
| |
Collapse
|
5
|
Clementino AR, Pellegrini G, Banella S, Colombo G, Cantù L, Sonvico F, Del Favero E. Structure and Fate of Nanoparticles Designed for the Nasal Delivery of Poorly Soluble Drugs. Mol Pharm 2021; 18:3132-3146. [PMID: 34259534 PMCID: PMC8335725 DOI: 10.1021/acs.molpharmaceut.1c00366] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [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] [Indexed: 12/22/2022]
Abstract
Nanoparticles are promising mediators to enable nasal systemic and brain delivery of active compounds. However, the possibility of reaching therapeutically relevant levels of exogenous molecules in the body is strongly reliant on the ability of the nanoparticles to overcome biological barriers. In this work, three paradigmatic nanoformulations vehiculating the poorly soluble model drug simvastatin were addressed: (i) hybrid lecithin/chitosan nanoparticles (LCNs), (ii) polymeric poly-ε-caprolactone nanocapsules stabilized with the nonionic surfactant polysorbate 80 (PCL_P80), and (iii) polymeric poly-ε-caprolactone nanocapsules stabilized with a polysaccharide-based surfactant, i.e., sodium caproyl hyaluronate (PCL_SCH). The three nanosystems were investigated for their physicochemical and structural properties and for their impact on the biopharmaceutical aspects critical for nasal and nose-to-brain delivery: biocompatibility, drug release, mucoadhesion, and permeation across the nasal mucosa. All three nanoformulations were highly reproducible, with small particle size (∼200 nm), narrow size distribution (polydispersity index (PI) < 0.2), and high drug encapsulation efficiency (>97%). Nanoparticle composition, surface charge, and internal structure (multilayered, core-shell or raspberry-like, as assessed by small-angle neutron scattering, SANS) were demonstrated to have an impact on both the drug-release profile and, strikingly, its behavior at the biological interface. The interaction with the mucus layer and the kinetics and extent of transport of the drug across the excised animal nasal epithelium were modulated by nanoparticle structure and surface. In fact, all of the produced nanoparticles improved simvastatin transport across the epithelial barrier of the nasal cavity as compared to a traditional formulation. Interestingly, however, the permeation enhancement was achieved via two distinct pathways: (a) enhanced mucoadhesion for hybrid LCN accompanied by fast mucosal permeation of the model drug, or (b) mucopenetration and an improved uptake and potential transport of whole PCL_P80 and PCL_SCH nanocapsules with delayed boost of permeation across the nasal mucosa. The correlation between nanoparticle structure and its biopharmaceutical properties appears to be a pivotal point for the development of novel platforms suitable for systemic and brain delivery of pharmaceutical compounds via intranasal administration.
Collapse
Affiliation(s)
- Adryana Rocha Clementino
- National Council for Scientific and Technological Development-CNPq, Brazilian Government, Brasília DF, 70311-000, Brazil.,Food and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 20090 Parma, Italy
| | - Giulia Pellegrini
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Via Fratelli Cervi 93, Segrate, 20122 Milan, Italy
| | - Sabrina Banella
- Department of Life Sciences and Biotechnology, University of Ferrara, Via Fossato di Mortara 17/19, 44121 Ferrara, Italy
| | - Gaia Colombo
- Department of Life Sciences and Biotechnology, University of Ferrara, Via Fossato di Mortara 17/19, 44121 Ferrara, Italy
| | - Laura Cantù
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Via Fratelli Cervi 93, Segrate, 20122 Milan, Italy
| | - Fabio Sonvico
- Food and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 20090 Parma, Italy.,Biopharmanet-TEC, University of Parma, Parco Area delle Scienze 27/A, 20090 Parma, Italy
| | - Elena Del Favero
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Via Fratelli Cervi 93, Segrate, 20122 Milan, Italy
| |
Collapse
|
6
|
Hanieh PN, Forte J, Di Meo C, Ammendolia MG, Del Favero E, Cantù L, Rinaldi F, Marianecci C, Carafa M. Hyaluronic Acid Derivative Effect on Niosomal Coating and Interaction with Cellular Mimetic Membranes. Molecules 2021; 26:molecules26113434. [PMID: 34198955 PMCID: PMC8201220 DOI: 10.3390/molecules26113434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 12/11/2022] Open
Abstract
Hyaluronic acid (HA) is one of the most used biopolymers in the development of drug delivery systems, due to its biocompatibility, biodegradability, non-immunogenicity and intrinsic-targeting properties. HA specifically binds to CD44; this property combined to the EPR effect could provide an option for reinforced active tumor targeting by nanocarriers, improving drug uptake by the cancer cells via the HA-CD44 receptor-mediated endocytosis pathway. Moreover, HA can be easily chemically modified to tailor its physico-chemical properties in view of specific applications. The derivatization with cholesterol confers to HA an amphiphilic character, and then the ability of anchoring to niosomes. HA-Chol was then used to coat Span® or Tween® niosomes providing them with an intrinsic targeting shell. The nanocarrier physico-chemical properties were analyzed in terms of hydrodynamic diameter, ζ-potential, and bilayer structural features to evaluate the difference between naked and HA-coated niosomes. Niosomes stability was evaluated over time and in bovine serum. Moreover, interaction properties of HA-coated nanovesicles with model membranes, namely liposomes, were studied, to obtain insights on their interaction behavior with biological membranes in future experiments. The obtained coated systems showed good chemical physical features and represent a good opportunity to carry out active targeting strategies.
Collapse
Affiliation(s)
- Patrizia N. Hanieh
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
| | - Jacopo Forte
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
| | - Chiara Di Meo
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
| | - Maria Grazia Ammendolia
- Centro Nazionale Tecnologie Innovative in Sanità Pubblica, Istituto Superiore di Sanità, Viale Regina Elena 299, 00162 Rome, Italy;
| | - Elena Del Favero
- Laboratorio Interdisciplinare Tecnologie Avanzate (L.I.T.A.), Department of Medical Biotechnologies and Translational Medicine, University of Milan, Via Fratelli Cervi 93, 20090 Segrate, Italy; (E.D.F.); (L.C.)
| | - Laura Cantù
- Laboratorio Interdisciplinare Tecnologie Avanzate (L.I.T.A.), Department of Medical Biotechnologies and Translational Medicine, University of Milan, Via Fratelli Cervi 93, 20090 Segrate, Italy; (E.D.F.); (L.C.)
| | - Federica Rinaldi
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
- Correspondence: (F.R.); (C.M.)
| | - Carlotta Marianecci
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
- Correspondence: (F.R.); (C.M.)
| | - Maria Carafa
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Piazzle A. Moro 5, 00185 Roma, Italy; (P.N.H.); (J.F.); (C.D.M.); (M.C.)
| |
Collapse
|
7
|
Ghezzi M, Pescina S, Padula C, Santi P, Del Favero E, Cantù L, Nicoli S. Polymeric micelles in drug delivery: An insight of the techniques for their characterization and assessment in biorelevant conditions. J Control Release 2021; 332:312-336. [PMID: 33652113 DOI: 10.1016/j.jconrel.2021.02.031] [Citation(s) in RCA: 305] [Impact Index Per Article: 101.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 12/16/2022]
Abstract
Polymeric micelles, i.e. aggregation colloids formed in solution by self-assembling of amphiphilic polymers, represent an innovative tool to overcome several issues related to drug administration, from the low water-solubility to the poor drug permeability across biological barriers. With respect to other nanocarriers, polymeric micelles generally display smaller size, easier preparation and sterilization processes, and good solubilization properties, unfortunately associated with a lower stability in biological fluids and a more complicated characterization. Particularly challenging is the study of their interaction with the biological environment, essential to predict the real in vivo behavior after administration. In this review, after a general presentation on micelles features and properties, different characterization techniques are discussed, from the ones used for the determination of micelles basic characteristics (critical micellar concentration, size, surface charge, morphology) to the more complex approaches used to figure out micelles kinetic stability, drug release and behavior in the presence of biological substrates (fluids, cells and tissues). The techniques presented (such as dynamic light scattering, AFM, cryo-TEM, X-ray scattering, FRET, symmetrical flow field-flow fractionation (AF4) and density ultracentrifugation), each one with their own advantages and limitations, can be combined to achieve a deeper comprehension of polymeric micelles in vivo behavior. The set-up and validation of adequate methods for micelles description represent the essential starting point for their development and clinical success.
Collapse
Affiliation(s)
- M Ghezzi
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - S Pescina
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - C Padula
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - P Santi
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - E Del Favero
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Segrate, Italy
| | - L Cantù
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Segrate, Italy
| | - S Nicoli
- ADDRes Lab, Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| |
Collapse
|
8
|
Gamba A, Salmona M, Cantù L, Bazzoni G. The similarity of inherited diseases (II): clinical and biological similarity between the phenotypic series. BMC Med Genomics 2020; 13:139. [PMID: 32972400 PMCID: PMC7513283 DOI: 10.1186/s12920-020-00793-y] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 09/08/2020] [Indexed: 11/10/2022] Open
Abstract
Background Despite being caused by mutations in different genes, diseases in the same phenotypic series are clinically similar, as reported in Part I of this study. Here, in Part II, we hypothesized that the phenotypic series too might be clinically similar. Furthermore, on the assumption that gene mutations indirectly cause clinical phenotypes by directly affecting biological functions, we hypothesized that clinically similar phenotypic series might be biologically similar as well. Methods To test these hypotheses, we generated a clinical similarity network and a set of biological similarity networks. In both types of network, the nodes represent the phenotypic series, and the edges linking the nodes indicate the similarity of the linked phenotypic series. The weight of each edge is proportional to a similarity coefficient, which depends on the clinical phenotypes and the biological features that are shared by the linked phenotypic series, in the clinical and biological similarity networks, respectively. Results After assembling and analyzing the networks, we raised the threshold for the similarity coefficient, to retain edges of progressively greater weight. This way all the networks were gradually split into fragments, composed of phenotypic series with increasingly greater degrees of similarity. Finally, by comparing the fragments from the two types of network, we defined subsets of phenotypic series with varying types and degrees of clinical and biological correlation. Conclusions Like the individual diseases, the phenotypic series too are clinically and biologically similar to each other. Furthermore, our findings unveil different modalities of correlation between the clinical manifestations and the biological features of the inherited diseases.
Collapse
Affiliation(s)
- Alessio Gamba
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, I-20156, Milan, Italy
| | - Mario Salmona
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, I-20156, Milan, Italy
| | - Laura Cantù
- Department of Medical Biotechnology and Translational Medicine, University of Milan, LITA, Segrate, Italy
| | - Gianfranco Bazzoni
- Department of Biochemistry and Molecular Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, I-20156, Milan, Italy.
| |
Collapse
|
9
|
Pescina S, Lucca LG, Govoni P, Padula C, Favero ED, Cantù L, Santi P, Nicoli S. Ex Vivo Conjunctival Retention and Transconjunctival Transport of Poorly Soluble Drugs Using Polymeric Micelles. Pharmaceutics 2019; 11:pharmaceutics11090476. [PMID: 31540066 PMCID: PMC6781556 DOI: 10.3390/pharmaceutics11090476] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/10/2019] [Accepted: 09/10/2019] [Indexed: 12/14/2022] Open
Abstract
This paper addresses the problem of ocular delivery of lipophilic drugs. The aim of the paper is the evaluation of polymeric micelles, prepared using TPGS (d-α-Tocopheryl polyethylene glycol 1000 succinate), a water-soluble derivative of Vitamin E and/or poloxamer 407, as a vehicle for the ocular delivery of dexamethasone, cyclosporine, and econazole nitrate. The research steps were: (1) characterize polymeric micelles by dynamic light scattering (DLS) and X-ray scattering; (2) evaluate the solubility increase of the three drugs; (3) measure the in vitro transport and conjunctiva retention, in comparison to conventional vehicles; (4) investigate the mechanisms of enhancement, by studying drug release from the micelles and transconjunctival permeation of TPGS; and (5) study the effect of micelles application on the histology of conjunctiva. The data obtained demonstrate the application potential of polymeric micelles in ocular delivery, due to their ability to increase the solubility of lipophilic drugs and enhance transport in and across the conjunctival epithelium. The best-performing formulation was the one made of TPGS alone (micelles size ≈ 12 nm), probably because of the higher mobility of these micelles, an enhanced interaction with the conjunctival epithelium, and, possibly, the penetration of intact micelles.
Collapse
Affiliation(s)
- Silvia Pescina
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| | - Leticia Grolli Lucca
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| | - Paolo Govoni
- Department of Medicine and Surgery, University of Parma, via Volturno 39, 43126 Parma, Italy.
| | - Cristina Padula
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| | - Elena Del Favero
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, 20090 Segrate (MI), Italy.
| | - Laura Cantù
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, 20090 Segrate (MI), Italy.
| | - Patrizia Santi
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| | - Sara Nicoli
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| |
Collapse
|
10
|
Barattin M, Mattarei A, Balasso A, Paradisi C, Cantù L, Del Favero E, Viitala T, Mastrotto F, Caliceti P, Salmaso S. Correction to pH-Controlled Liposomes for Enhanced Cell Penetration in Tumor Environment. ACS Appl Mater Interfaces 2019; 11:29474-29475. [PMID: 31379154 DOI: 10.1021/acsami.9b12730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
|
11
|
Rinaldi F, Seguella L, Gigli S, Hanieh PN, Del Favero E, Cantù L, Pesce M, Sarnelli G, Marianecci C, Esposito G, Carafa M. inPentasomes: An innovative nose-to-brain pentamidine delivery blunts MPTP parkinsonism in mice. J Control Release 2018; 294:17-26. [PMID: 30529726 DOI: 10.1016/j.jconrel.2018.12.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/05/2018] [Accepted: 12/06/2018] [Indexed: 11/19/2022]
Abstract
Preclinical and clinical evidences have demonstrated that astroglial-derived S100B protein is a key element in neuroinflammation underlying the pathogenesis of Parkinson's disease (PD), so much as that S100B inhibitors have been proposed as promising candidates for PD targeted therapy. Pentamidine, an old-developed antiprotozoal drug, currently used for pneumocystis carinii is one of the most potent inhibitors of S100B activity, but despite this effect, is limited by its low capability to cross blood brain barrier (BBB). To overcome this problem, we developed a non-invasive intranasal delivery system, chitosan coated niosomes with entrapped pentamidine (inPentasomes), in the attempt to provide a novel pharmacological approach to ameliorate parkinsonism induced by subchronic MPTP administration in C57BL-6 J mice. inPentasomes, prepared by evaporation method was administered daily by intranasal route in subchronic MPTP-intoxicated rodents and resulted in a dose-dependent manner (0.001-0.004 mg/kg) capable for a significant Tyrosine Hydroxylase (TH) positive neuronal density rescue in both striatum and substantia nigra of parkinsonian mice. In parallel, inPentasomes significantly decreased the extent of glial-related neuroinflammation through the reduction of specific gliotic markers (Iba-1, GFAP, COX-2, iNOS) with consequent PGE2 and NO2- release reduction, in nigrostriatal system. inPentasomes-mediated S100B inhibition resulted in a RAGE/NF-κB pathway downstream inhibition in the nigrostriatal circuit, causing a marked amelioration of motor performances in intoxicated mice. On the basis of our results, chitosan coated niosomes loaded with pentamidine, the inPentasome system, self-candidates as a promising new intranasal approach to mitigate parkinsonism in humans and possibly paves the way for a possible clinical repositioning of pentamidine as anti-PD drug.
Collapse
Affiliation(s)
- F Rinaldi
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia (ITT), Rome, Italy
| | - L Seguella
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, Rome, Italy
| | - S Gigli
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, Rome, Italy
| | - P N Hanieh
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome, Italy
| | - E Del Favero
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Italy
| | - L Cantù
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Italy
| | - M Pesce
- Department of Clinical Medicine and Surgery, University of Naples 'Federico II', Naples, Italy
| | - G Sarnelli
- Department of Clinical Medicine and Surgery, University of Naples 'Federico II', Naples, Italy
| | - C Marianecci
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome, Italy.
| | - G Esposito
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, Rome, Italy
| | - M Carafa
- Department of Drug Chemistry and Technology, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
12
|
Brocca P, Rondelli V, Corti M, Del Favero E, Deleu M, Cantù L. Interferometric investigation of the gas-state monolayer of mono-rhamnolipid adsorbing at an oil/water interface. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.06.121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
13
|
Barattin M, Mattarei A, Balasso A, Paradisi C, Cantù L, Del Favero E, Viitala T, Mastrotto F, Caliceti P, Salmaso S. pH-Controlled Liposomes for Enhanced Cell Penetration in Tumor Environment. ACS Appl Mater Interfaces 2018; 10:17646-17661. [PMID: 29737834 DOI: 10.1021/acsami.8b03469] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An innovative pH-switchable colloidal system that can be exploited for site-selective anticancer drug delivery has been generated by liposome decoration with a new novel synthetic non-peptidic oligo-arginine cell-penetration enhancer (CPE) and a quenching PEGylated counterpart that detaches from the vesicle surface under the acidic conditions of tumors. The CPE module ( Arg4- DAG) is formed by four arginine units conjugated to a first-generation (G1) 2,2-bis(hydroxymethyl)propionic acid (bis-MPA)/2,2-bis(aminomethyl)propionic acid (bis-AMPA) polyester dendron terminating with 1,2-distearoyl-3-azidopropane for liposome bilayer insertion. The zeta potential of the Arg4- DAG-decorated liposomes increased up to +32 mV as the Arg4- DAG/lipids molar ratio increased. The Arg4- DAG liposome shielding at pH 7.4 was provided by methoxy-PEG5 kDa-polymethacryloyl sulfadimethoxine (mPEG5 kDa-SDM8) with 7.1 apparent p Ka. Zeta potential, surface plasmon resonance and synchrotron small-angle X-ray scattering analyses showed that at pH 7.4 mPEG5 kDa-SDM8 associates with polycationic Arg4- DAG-decorated liposomes yielding liposomes with neutral zeta potential. At pH 6.5, which mimics the tumor environment, mPEG5 kDa-SDM8 detaches from the liposome surface yielding Arg4- DAG exposure. Flow cytometry and confocal microscopy showed a 30-fold higher HeLa cancer cell association of the Arg4- DAG-decorated liposomes compared to non-decorated liposomes. At pH 7.4, the mPEG5 kDa-SDM8-coated liposomes undergo low cell association while remarkable cell association occurred at pH 6.5, which allowed for the controlled intracellular delivery of model macromolecules and small molecules loaded in the liposome under tumor conditions.
Collapse
Affiliation(s)
- Michela Barattin
- Department of Pharmaceutical and Pharmacological Sciences , University of Padova , Via F. Marzolo 5 , Padova 35131 , Italy
| | - Andrea Mattarei
- Department of Chemical Sciences , University of Padova , Via F. Marzolo 1 , Padova 35131 , Italy
| | - Anna Balasso
- Department of Pharmaceutical and Pharmacological Sciences , University of Padova , Via F. Marzolo 5 , Padova 35131 , Italy
| | - Cristina Paradisi
- Department of Chemical Sciences , University of Padova , Via F. Marzolo 1 , Padova 35131 , Italy
| | - Laura Cantù
- Department of Medical Biotechnologies and Traslational Medicine , University of Milano , LITA, Via F.lli Cervi, 93 , Segrate 20090 , Italy
| | - Elena Del Favero
- Department of Medical Biotechnologies and Traslational Medicine , University of Milano , LITA, Via F.lli Cervi, 93 , Segrate 20090 , Italy
| | - Tapani Viitala
- Centre for Drug Research and Division of Pharmaceutical Biosciences, Faculty of Pharmacy , University of Helsinki , Viikinkaari 5 , Helsinki FI-00014 , Finland
| | - Francesca Mastrotto
- Department of Pharmaceutical and Pharmacological Sciences , University of Padova , Via F. Marzolo 5 , Padova 35131 , Italy
| | - Paolo Caliceti
- Department of Pharmaceutical and Pharmacological Sciences , University of Padova , Via F. Marzolo 5 , Padova 35131 , Italy
| | - Stefano Salmaso
- Department of Pharmaceutical and Pharmacological Sciences , University of Padova , Via F. Marzolo 5 , Padova 35131 , Italy
| |
Collapse
|
14
|
Telò I, Favero ED, Cantù L, Frattini N, Pescina S, Padula C, Santi P, Sonvico F, Nicoli S. Gel-like TPGS-Based Microemulsions for Imiquimod Dermal Delivery: Role of Mesostructure on the Uptake and Distribution into the Skin. Mol Pharm 2017; 14:3281-3289. [DOI: 10.1021/acs.molpharmaceut.7b00348] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Isabella Telò
- Food
and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Elena Del Favero
- Department
of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Via F.lli Cervi, 93, 20090 Segrate, Italy
| | - Laura Cantù
- Department
of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Via F.lli Cervi, 93, 20090 Segrate, Italy
| | - Noemi Frattini
- Food
and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Silvia Pescina
- Food
and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Cristina Padula
- Food
and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Patrizia Santi
- Food
and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Fabio Sonvico
- Food
and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| | - Sara Nicoli
- Food
and Drug Department, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy
| |
Collapse
|
15
|
Rondelli V, Brocca P, Tranquilli N, Fragneto G, Del Favero E, Cantù L. Building a biomimetic membrane for neutron reflectivity investigation: Complexity, asymmetry and contrast. Biophys Chem 2017; 229:135-141. [PMID: 28499578 DOI: 10.1016/j.bpc.2017.04.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 03/31/2017] [Revised: 04/28/2017] [Accepted: 04/28/2017] [Indexed: 11/25/2022]
Abstract
The preparation and investigation of model membranes is deserving growing interest both for the physics of complex systems, and for biology. The need of simplified models should preserve mimicking the qualifying characteristics of biological membranes, and keep non-invasive and detailed description. As a main feature, biological membranes are non-homogeneous in the disposition of components, both in the lateral and in the transverse direction. We prepared asymmetric supported membranes containing GM1 ganglioside in biomimetic proportion according to different protocols. Then, we studied their internal structure by neutron reflectometry, providing few-Angstrom sensitivity in the cross direction meanwhile avoiding radiation damage. This technique can also be profitably applied to study interactions at the membrane surface. The best protocol has proven to be the Langmuir-Blodgett/Langmuir-Schaefer depositions. Notably, also the simpler and most accessible protocol of vesicle fusion was found to be suitable for straightforward and good quality deposition of compositionally asymmetric membranes.
Collapse
Affiliation(s)
- Valeria Rondelli
- Università degli Studi di Milano, BIOMETRA, Via F.lli Cervi, 93, 20090 Segrate, Italy.
| | - Paola Brocca
- Università degli Studi di Milano, BIOMETRA, Via F.lli Cervi, 93, 20090 Segrate, Italy
| | - Nicola Tranquilli
- Università degli Studi di Milano, BIOMETRA, Via F.lli Cervi, 93, 20090 Segrate, Italy
| | - Giovanna Fragneto
- Institut Laue-Langevin, 71 Avenue des Martyrs, BP 156, 38000 Grenoble Cedex, France
| | - Elena Del Favero
- Università degli Studi di Milano, BIOMETRA, Via F.lli Cervi, 93, 20090 Segrate, Italy
| | - Laura Cantù
- Università degli Studi di Milano, BIOMETRA, Via F.lli Cervi, 93, 20090 Segrate, Italy
| |
Collapse
|
16
|
Sandri G, Motta S, Bonferoni MC, Brocca P, Rossi S, Ferrari F, Rondelli V, Cantù L, Caramella C, Del Favero E. Chitosan-coupled solid lipid nanoparticles: Tuning nanostructure and mucoadhesion. Eur J Pharm Biopharm 2017; 110:13-18. [DOI: 10.1016/j.ejpb.2016.10.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 08/10/2016] [Accepted: 10/22/2016] [Indexed: 11/27/2022]
|
17
|
Clementino A, Batger M, Garrastazu G, Pozzoli M, Del Favero E, Rondelli V, Gutfilen B, Barboza T, Sukkar MB, Souza SAL, Cantù L, Sonvico F. The nasal delivery of nanoencapsulated statins - an approach for brain delivery. Int J Nanomedicine 2016; 11:6575-6590. [PMID: 27994459 PMCID: PMC5153258 DOI: 10.2147/ijn.s119033] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [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] [Indexed: 01/08/2023] Open
Abstract
Purpose Along with their cholesterol-lowering effect, statins have shown a wide range of pleiotropic effects potentially beneficial to neurodegenerative diseases. However, such effects are extremely elusive via the conventional oral administration. The purpose of the present study was to prepare and characterize the physicochemical properties and the in vivo biodistribution of simvastatin-loaded lecithin/chitosan nanoparticles (SVT-LCNs) suitable for nasal administration in view of an improved delivery of the statins to the brain. Materials and methods Chitosan, lecithin, and different oil excipients were used to prepare nanocapsules loaded with simvastatin. Particle size distribution, surface charge, structure, simvastatin loading and release, and interaction with mucus of nanoparticles were determined. The nanoparticle nasal toxicity was evaluated in vitro using RPMI 2651 nasal cell lines. Finally, in vivo biodistribution was assessed by gamma scintigraphy via Tc99m labeling of the particles. Results Among the different types of nanoparticles produced, the SVT-LCN_MaiLab showed the most ideal physicochemical characteristics, with small diameter (200 nm), positive surface charge (+48 mV) and high encapsulation efficiency (EE; 98%). Size distribution was further confirmed by nanoparticle tracking analysis and electron microscopy. The particles showed a relatively fast release of simvastatin in vitro (35.6%±4.2% in 6 hours) in simulated nasal fluid. Blank nanoparticles did not show cytotoxicity, evidencing that the formulation is safe for nasal administration, while cytotoxicity of simvastatin-loaded nanoparticles (IC50) was found to be three times lower than the drug solution (9.92 vs 3.50 μM). In rats, a significantly higher radioactivity was evidenced in the brain after nasal delivery of simvastatin-loaded nanoparticles in comparison to the administration of a similar dose of simvastatin suspension. Conclusion The SVT-LCNs developed presented some of the most desirable characteristics for mucosal delivery, that is, small particle size, positive surface charge, long-term stability, high EE, and mucoadhesion. In addition, they displayed two exciting features: First was their biodegradability by enzymes present in the mucus layer, such as lysozyme. This indicates a new Trojan-horse strategy which may enhance drug release in the proximity of the nasal mucosa. Second was their ability to enhance the nose-to-brain transport as evidenced by preliminary gamma scintigraphy studies.
Collapse
Affiliation(s)
- Adryana Clementino
- Department of Pharmacy, University of Parma, Parma, Italy; National Council for Scientific and Technological Development - CNPq, Brasilia, Brazil
| | - Mellissa Batger
- Graduate School of Health - Pharmacy, University of Technology Sydney, Ultimo, NSW, Australia
| | - Gabriela Garrastazu
- National Council for Scientific and Technological Development - CNPq, Brasilia, Brazil; Graduate School of Health - Pharmacy, University of Technology Sydney, Ultimo, NSW, Australia
| | - Michele Pozzoli
- Graduate School of Health - Pharmacy, University of Technology Sydney, Ultimo, NSW, Australia
| | - Elena Del Favero
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Segrate, Italy
| | - Valeria Rondelli
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Segrate, Italy
| | - Bianca Gutfilen
- Laboratório de Marcação de Células e Moléculas, Department of Radiology, Faculty of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thiago Barboza
- Laboratório de Marcação de Células e Moléculas, Department of Radiology, Faculty of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Maria B Sukkar
- Graduate School of Health - Pharmacy, University of Technology Sydney, Ultimo, NSW, Australia
| | - Sergio A L Souza
- Laboratório de Marcação de Células e Moléculas, Department of Radiology, Faculty of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Laura Cantù
- Department of Medical Biotechnologies and Translational Medicine, LITA, University of Milan, Segrate, Italy
| | - Fabio Sonvico
- Department of Pharmacy, University of Parma, Parma, Italy; Graduate School of Health - Pharmacy, University of Technology Sydney, Ultimo, NSW, Australia
| |
Collapse
|
18
|
Aoun B, Pellegrini E, Trapp M, Natali F, Cantù L, Brocca P, Gerelli Y, Demé B, Marek Koza M, Johnson M, Peters J. Direct comparison of elastic incoherent neutron scattering experiments with molecular dynamics simulations of DMPC phase transitions. Eur Phys J E Soft Matter 2016; 39:48. [PMID: 27112937 DOI: 10.1140/epje/i2016-16048-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 03/24/2016] [Indexed: 06/05/2023]
Abstract
Neutron scattering techniques have been employed to investigate 1,2-dimyristoyl-sn -glycero-3-phosphocholine (DMPC) membranes in the form of multilamellar vesicles (MLVs) and deposited, stacked multilamellar-bilayers (MLBs), covering transitions from the gel to the liquid phase. Neutron diffraction was used to characterise the samples in terms of transition temperatures, whereas elastic incoherent neutron scattering (EINS) demonstrates that the dynamics on the sub-macromolecular length-scale and pico- to nano-second time-scale are correlated with the structural transitions through a discontinuity in the observed elastic intensities and the derived mean square displacements. Molecular dynamics simulations have been performed in parallel focussing on the length-, time- and temperature-scales of the neutron experiments. They correctly reproduce the structural features of the main gel-liquid phase transition. Particular emphasis is placed on the dynamical amplitudes derived from experiment and simulations. Two methods are used to analyse the experimental data and mean square displacements. They agree within a factor of 2 irrespective of the probed time-scale, i.e. the instrument utilized. Mean square displacements computed from simulations show a comparable level of agreement with the experimental values, albeit, the best match with the two methods varies for the two instruments. Consequently, experiments and simulations together give a consistent picture of the structural and dynamical aspects of the main lipid transition and provide a basis for future, theoretical modelling of dynamics and phase behaviour in membranes. The need for more detailed analytical models is pointed out by the remaining variation of the dynamical amplitudes derived in two different ways from experiments on the one hand and simulations on the other.
Collapse
Affiliation(s)
- Bachir Aoun
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
| | - Eric Pellegrini
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
| | - Marcus Trapp
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, 69120, Heidelberg, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie, Lise-Meitner Campus, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Francesca Natali
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
- CNR-IOM-OGG, c/o Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
| | - Laura Cantù
- University of Milan, via F. lli Cervi 93, 20090, Segrate, Italy
| | - Paola Brocca
- University of Milan, via F. lli Cervi 93, 20090, Segrate, Italy
| | - Yuri Gerelli
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
| | - Bruno Demé
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
| | - Michael Marek Koza
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
| | - Mark Johnson
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France
| | - Judith Peters
- Institut Laue-Langevin, 71 avenue des Martyrs, CS 20156, 38042, Grenoble Cedex 9, France.
- LiPhy, UFR PhITEM, Univ. Grenoble Alpes, 71 avenue des Martyrs, CS 10090, 38044, Grenoble, France.
| |
Collapse
|
19
|
Marianecci C, Di Marzio L, Del Favero E, Cantù L, Brocca P, Rondelli V, Rinaldi F, Dini L, Serra A, Decuzzi P, Celia C, Paolino D, Fresta M, Carafa M. Niosomes as Drug Nanovectors: Multiscale pH-Dependent Structural Response. Langmuir 2016; 32:1241-9. [PMID: 26740247 DOI: 10.1021/acs.langmuir.5b04111] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The use of nanocarriers, which respond to different stimuli controlling their physicochemical properties and biological responsivness, shows a growing interest in pharmaceutical science. The stimuli are activated by targeting tissues and biological compartments, e.g., pH modification, temperature, redox condition, enzymatic activity, or can be physically applied, e.g., a magnetic field and ultrasound. pH modification represents the easiest method of passive targeting, which is actually used to accumulate nanocarriers in cells and tissues. The aim of this paper was to physicochemically characterize pH-sensitive niosomes using different experimental conditions and demonstrate the effect of surfactant composition on the supramolecular structure of niosomes. In this attempt, niosomes, made from commercial (Tween21) and synthetic surfactants (Tween20 derivatives), were physicochemically characterized by using different techniques, e.g., transmission electron microscopy, Raman spectroscopy, and small-angle X-ray scattering. The changes of niosome structure at different pHs depend on surfactants, which can affect the supramolecular structure of colloidal nanocarriers and their potential use both in vitro and in vivo. At pH 7.4, the shape and structure of niosomes have been maintained; however, niosomes show some differences in terms of bilayer thicknesses, water penetration, membrane coupling, and cholesterol dispersion. The acid pH (5.5) can increase the bilayer fluidity, and affect the cholesterol depletion. In fact, Tween21 niosomes form large vesicles with lower curvature radius at acid pH; while Tween20-derivative niosomes increase the intrachain mobility within a more interchain correlated membrane. These results demonstrate that the use of multiple physicochemical procedures provides more information about supramolecular structures of niosomes and improves the opportunity to deeply investigate the effect of stimuli responsiveness on the niosome structure.
Collapse
Affiliation(s)
- Carlotta Marianecci
- Department of Drug Chemistry and Technology, University of Rome "Sapienza" , 00185 Rome, Italy
| | - Luisa Di Marzio
- Department of Pharmacy, University of Chieti - Pescara "G d'Annunzio" , 66100 Chieti - Pescara, Italy
| | - Elena Del Favero
- Department of Medical Biotechnologies and Traslational Medicine, University of Milan , LITA, 20122 Milan, Italy
| | - Laura Cantù
- Department of Medical Biotechnologies and Traslational Medicine, University of Milan , LITA, 20122 Milan, Italy
| | - Paola Brocca
- Department of Medical Biotechnologies and Traslational Medicine, University of Milan , LITA, 20122 Milan, Italy
| | - Valeria Rondelli
- Department of Medical Biotechnologies and Traslational Medicine, University of Milan , LITA, 20122 Milan, Italy
| | - Federica Rinaldi
- Center for Life Nano Science@Sapienza, Fondazione Istituto Italiano di Tecnologia , 00197 Rome, Italy
| | - Luciana Dini
- Department of Biological and Environmental Sciences and Technologies, University of Salento , 73100 Lecce, Italy
| | - Antonio Serra
- Department of Physics Applied to Materials Science Laboratory (PAMS-Lab), University of Salento , 73100 Lecce, Italy
| | - Paolo Decuzzi
- Department of Translational Imaging, Houston Methodist Research Institute , Houston, Texas 77030, United States
- Department of Drug Discovery and Development, Fondazione Istituto Italiano di Tecnologia , 16163 Genoa, Italy
- Department of Experimental and Clinical Medicine, University of Catanzaro "Magna Græcia" , 88100 Catanzaro, Italy
| | - Christian Celia
- Department of Pharmacy, University of Chieti - Pescara "G d'Annunzio" , 66100 Chieti - Pescara, Italy
- Department of Nanomedicine, Houston Methodist Research Institute , Houston, Texas 77030, United States
| | - Donatella Paolino
- Department of Experimental and Clinical Medicine, University of Catanzaro "Magna Græcia" , 88100 Catanzaro, Italy
- IRC FSH-Interregional Research Center for Food Safety & Health, University of Catanzaro "Magna Græcia" , 88100 Catanzaro, Italy
| | - Massimo Fresta
- IRC FSH-Interregional Research Center for Food Safety & Health, University of Catanzaro "Magna Græcia" , 88100 Catanzaro, Italy
- Department of Health Sciences, University of Catanzaro "Magna Græcia" , 88100 Catanzaro, Italy
| | - Maria Carafa
- Department of Drug Chemistry and Technology, University of Rome "Sapienza" , 00185 Rome, Italy
| |
Collapse
|
20
|
Messa M, Colombo L, del Favero E, Cantù L, Stoilova T, Cagnotto A, Rossi A, Morbin M, Di Fede G, Tagliavini F, Salmona M. The peculiar role of the A2V mutation in amyloid-β (Aβ) 1-42 molecular assembly. J Biol Chem 2014; 289:24143-52. [PMID: 25037228 DOI: 10.1074/jbc.m114.576256] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We recently reported a novel Aβ precursor protein mutation (A673V), corresponding to position 2 of Aβ1-42 peptides (Aβ1-42A2V), that caused an early onset AD-type dementia in a homozygous individual. The heterozygous relatives were not affected as an indication of autosomal recessive inheritance of this mutation. We investigated the folding kinetics of native unfolded Aβ1-42A2V in comparison with the wild type sequence (Aβ1-42WT) and the equimolar solution of both peptides (Aβ1-42MIX) to characterize the oligomers that are produced in the early phases. We carried out the structural characterization of the three preparations using electron and atomic force microscopy, fluorescence emission, and x-ray diffraction and described the soluble oligomer formation kinetics by laser light scattering. The mutation promoted a peculiar pathway of oligomerization, forming a connected system similar to a polymer network with hydrophobic residues on the external surface. Aβ1-42MIX generated assemblies very similar to those produced by Aβ1-42WT, albeit with slower kinetics due to the difficulties of Aβ1-42WT and Aβ1-42A2V peptides in building up of stable intermolecular interaction.
Collapse
Affiliation(s)
- Massimo Messa
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Laura Colombo
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Elena del Favero
- Department of Medical Biotechnology and Translational Medicine, University of Milan, V.le F.lli Cervi 93, 20090 Segrate, Italy, and
| | - Laura Cantù
- Department of Medical Biotechnology and Translational Medicine, University of Milan, V.le F.lli Cervi 93, 20090 Segrate, Italy, and
| | - Tatiana Stoilova
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Alfredo Cagnotto
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Alessandro Rossi
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy
| | - Michela Morbin
- Neurology V and Neuropathology, IRCCS Foundation "Carlo Besta" Neurological Institute, Via Celoria 11, 20133 Milan, Italy
| | - Giuseppe Di Fede
- Neurology V and Neuropathology, IRCCS Foundation "Carlo Besta" Neurological Institute, Via Celoria 11, 20133 Milan, Italy
| | - Fabrizio Tagliavini
- Neurology V and Neuropathology, IRCCS Foundation "Carlo Besta" Neurological Institute, Via Celoria 11, 20133 Milan, Italy
| | - Mario Salmona
- From the Department of Molecular Biochemistry and Pharmacology, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156, Milan, Italy,
| |
Collapse
|
21
|
Rossi G, Bastone A, Piccoli E, Morbin M, Mazzoleni G, Fugnanesi V, Beeg M, Del Favero E, Cantù L, Motta S, Salsano E, Pareyson D, Erbetta A, Elia AE, Del Sorbo F, Silani V, Morelli C, Salmona M, Tagliavini F. Different mutations at V363 MAPT codon are associated with atypical clinical phenotypes and show unusual structural and functional features. Neurobiol Aging 2014; 35:408-17. [DOI: 10.1016/j.neurobiolaging.2013.08.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 08/02/2013] [Accepted: 08/04/2013] [Indexed: 02/06/2023]
|
22
|
Pozzi D, Marchini C, Cardarelli F, Rossetta A, Colapicchioni V, Amici A, Montani M, Motta S, Brocca P, Cantù L, Caracciolo G. Mechanistic understanding of gene delivery mediated by highly efficient multicomponent envelope-type nanoparticle systems. Mol Pharm 2013; 10:4654-65. [PMID: 24188138 DOI: 10.1021/mp400470p] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We packaged condensed DNA/protamine particles in multicomponent envelope-type nanoparticle systems (MENS) combining different molar fractions of the cationic lipids 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) and 3β-[N-(N,N-dimethylaminoethane)-carbamoyl] cholesterol (DC-Chol) and the zwitterionic lipids dioleoylphosphocholine (DOPC) and dioleoylphosphatidylethanolamine (DOPE). Dynamic light scattering (DLS) and microelectrophoresis allowed us to identify the cationic lipid/DNA charge ratio at which MENS are small sized and positively charged, while synchrotron small-angle X-ray scattering (SAXS) and atomic force microscopy (AFM) revealed that MENS are well-shaped DNA/protamine particles covered by a lipid monobilayer. Transfection efficiency (TE) experiments indicate that a nanoparticle formulation, termed MENS-3, was not cytotoxic and highly efficient to transfect Chinese hamster ovary (CHO) cells. To rationalize TE, we performed a quantitative investigation of cell uptake, intracellular trafficking, endosomal escape, and final fate by laser scanning confocal microscopy (LSCM). We found that fluid-phase macropinocytosis is the only endocytosis pathway used by MENS-3. Once taken up by the cell, complexes that are actively transported by microtubules frequently fuse with lysosomes, while purely diffusing systems do not. Indeed, spatiotemporal image correlation spectroscopy (STICS) clarified that MENS-3 mostly exploit diffusion to move in the cytosol of CHO cells, thus explaining the high TE levels observed. Also, MENS-3 exhibited a marked endosomal rupture ability resulting in extraordinary DNA release. The lipid-dependent and structure-dependent TE boost suggests that efficient transfection requires both the membrane-fusogenic activity of the nanocarrier envelope and the employment of lipid species with intrinsic endosomal rupture ability.
Collapse
Affiliation(s)
- D Pozzi
- Department of Molecular Medicine, "Sapienza" University of Rome , Viale Regina Elena 291, 00161, Rome, Italy
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Rondelli V, Del Favero E, Motta S, Cantù L, Fragneto G, Brocca P. Neutrons for rafts, rafts for neutrons. Eur Phys J E Soft Matter 2013; 36:73. [PMID: 23852579 DOI: 10.1140/epje/i2013-13073-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 03/08/2013] [Accepted: 03/11/2013] [Indexed: 06/02/2023]
Abstract
The determination of the structure of membrane rafts is a challenging issue in biology. The selection of membrane components both in the longitudinal and transverse directions plays a major role as it determines the creation of stable or tunable platforms that host interactions with components of the outer environment. We focus here on the possibility to apply neutron scattering to the study of raft mimics. With this aim, we realized two extreme experimental models for the same complex membrane system (phospholipid : cholesterol : ganglioside GM1), involving two of the characteristic components of glycolipid-enriched rafts. One consists of a thick stack of tightly packed membranes, mixed and symmetric in composition, deposited on a silicon wafer and analyzed by neutron diffraction. The other consists of a free floating individual membrane, mixed and asymmetric in composition in the two layers, studied by neutron reflection. We present here results on the ganglioside-cholesterol coupling. Ganglioside GM1 is found to force the redistribution of cholesterol between the two layers of the model membranes. This causes cholesterol exclusion from compositionally symmetric ganglioside-containing membranes, or, alternatively, asymmetric cholesterol enrichment in raft-mimics, where gangliosides reside into the opposite layer.
Collapse
Affiliation(s)
- V Rondelli
- Department of Medical Biotechnologies and Traslational Medicine, University of Milan, Segrate, Italy
| | | | | | | | | | | |
Collapse
|
24
|
Stravalaci M, Bastone A, Beeg M, Cagnotto A, Colombo L, Di Fede G, Tagliavini F, Cantù L, Del Favero E, Mazzanti M, Chiesa R, Salmona M, Diomede L, Gobbi M. Specific recognition of biologically active amyloid-β oligomers by a new surface plasmon resonance-based immunoassay and an in vivo assay in Caenorhabditis elegans. J Biol Chem 2012; 287:27796-805. [PMID: 22736768 DOI: 10.1074/jbc.m111.334979] [Citation(s) in RCA: 45] [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] [Indexed: 12/31/2022] Open
Abstract
Soluble oligomers of the amyloid-β (Aβ) peptide play a key role in the pathogenesis of Alzheimer's disease, but their elusive nature makes their detection challenging. Here we describe a novel immunoassay based on surface plasmon resonance (SPR) that specifically recognizes biologically active Aβ oligomers. As a capturing agent, we immobilized on the sensor chip the monoclonal antibody 4G8, which targets a central hydrophobic region of Aβ. This SPR assay allows specific recognition of oligomeric intermediates that rapidly appear and disappear during the incubation of synthetic Aβ(1-42), discriminating them from monomers and higher order aggregates. The species recognized by SPR generate ionic currents in artificial lipid bilayers and inhibit the physiological pharyngeal contractions in Caenorhabditis elegans, a new method for testing the toxic potential of Aβ oligomers. With these assays we found that the formation of biologically relevant Aβ oligomers is inhibited by epigallocatechin gallate and increased by the A2V mutation, previously reported to induce early onset dementia. The SPR-based immunoassay provides new opportunities for detection of toxic Aβ oligomers in biological samples and could be adapted to study misfolding proteins in other neurodegenerative disorders.
Collapse
Affiliation(s)
- Matteo Stravalaci
- Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri, 20156 Milan, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
|
26
|
Airoldi C, Colombo L, Manzoni C, Sironi E, Natalello A, Doglia SM, Forloni G, Tagliavini F, Del Favero E, Cantù L, Nicotra F, Salmona M. Tetracycline prevents Aβ oligomer toxicity through an atypical supramolecular interaction. Org Biomol Chem 2011; 9:463-72. [DOI: 10.1039/c0ob00303d] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
27
|
Cosentino S, Donida BM, Marasco E, Del Favero E, Cantù L, Lombardi G, Colombini A, Iametti S, Valaperta S, Fiorilli A, Tettamanti G, Ferraretto A. Calcium ions enclosed in casein phosphopeptide aggregates are directly involved in the mineral uptake by differentiated HT-29 cells. Int Dairy J 2010. [DOI: 10.1016/j.idairyj.2010.06.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
28
|
Tagliavini F, Catania M, Morbin M, Gobbi M, Colombo L, Bastone A, Cantù L, Levy E, Salmona M, Di Fede G. O1‐06‐03: Good Protein, Bad Protein: A New A
β
Variant Can Be Both. Alzheimers Dement 2009. [DOI: 10.1016/j.jalz.2009.07.121] [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: 11/26/2022]
Affiliation(s)
| | | | | | - Marco Gobbi
- “Mario Negri” Institute for Pharmacological ResearchMilanItaly
| | - Laura Colombo
- “Mario Negri” Institute for Pharmacological ResearchMilanItaly
| | - Antonio Bastone
- “Mario Negri” Institute for Pharmacological ResearchMilanItaly
| | | | - Efrat Levy
- “Nathan S. Kline” Institute, OrangeburgNew YorkNYUSA
| | - Mario Salmona
- “Mario Negri” Institute for Pharmacological ResearchMilanItaly
| | | |
Collapse
|
29
|
Di Fede G, Catania M, Morbin M, Rossi G, Suardi S, Mazzoleni G, Merlin M, Giovagnoli AR, Prioni S, Erbetta A, Falcone C, Gobbi M, Colombo L, Bastone A, Beeg M, Manzoni C, Francescucci B, Spagnoli A, Cantù L, Del Favero E, Levy E, Salmona M, Tagliavini F. A recessive mutation in the APP gene with dominant-negative effect on amyloidogenesis. Science 2009; 323:1473-7. [PMID: 19286555 PMCID: PMC2728497 DOI: 10.1126/science.1168979] [Citation(s) in RCA: 308] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
beta-Amyloid precursor protein (APP) mutations cause familial Alzheimer's disease with nearly complete penetrance. We found an APP mutation [alanine-673-->valine-673 (A673V)] that causes disease only in the homozygous state, whereas heterozygous carriers were unaffected, consistent with a recessive Mendelian trait of inheritance. The A673V mutation affected APP processing, resulting in enhanced beta-amyloid (Abeta) production and formation of amyloid fibrils in vitro. Co-incubation of mutated and wild-type peptides conferred instability on Abeta aggregates and inhibited amyloidogenesis and neurotoxicity. The highly amyloidogenic effect of the A673V mutation in the homozygous state and its anti-amyloidogenic effect in the heterozygous state account for the autosomal recessive pattern of inheritance and have implications for genetic screening and the potential treatment of Alzheimer's disease.
Collapse
Affiliation(s)
- Giuseppe Di Fede
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Marcella Catania
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Michela Morbin
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Giacomina Rossi
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Silvia Suardi
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Giulia Mazzoleni
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Marco Merlin
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Anna Rita Giovagnoli
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Sara Prioni
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Alessandra Erbetta
- Division of Neuroradiology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Chiara Falcone
- Division of Neuroepidemiology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| | - Marco Gobbi
- Department of Molecular Biochemistry and Pharmachology, Istituto di Ricerche Farmacologiche “Mario Negri,” 20156 Milan, Italy
| | - Laura Colombo
- Department of Molecular Biochemistry and Pharmachology, Istituto di Ricerche Farmacologiche “Mario Negri,” 20156 Milan, Italy
| | - Antonio Bastone
- Department of Molecular Biochemistry and Pharmachology, Istituto di Ricerche Farmacologiche “Mario Negri,” 20156 Milan, Italy
| | - Marten Beeg
- Department of Molecular Biochemistry and Pharmachology, Istituto di Ricerche Farmacologiche “Mario Negri,” 20156 Milan, Italy
| | - Claudia Manzoni
- Department of Molecular Biochemistry and Pharmachology, Istituto di Ricerche Farmacologiche “Mario Negri,” 20156 Milan, Italy
| | - Bruna Francescucci
- Division of Cognitive Disorders, Centro Sant’Ambrogio Fatebenefratelli, Cernusco sul Naviglio, 20063 Milan, Italy
| | - Alberto Spagnoli
- Division of Cognitive Disorders, Centro Sant’Ambrogio Fatebenefratelli, Cernusco sul Naviglio, 20063 Milan, Italy
| | - Laura Cantù
- Department of Medical Chemistry, Biochemistry, and Biotechnology, University of Milan, Segrate, 20090 Milan, Italy
| | - Elena Del Favero
- Department of Medical Chemistry, Biochemistry, and Biotechnology, University of Milan, Segrate, 20090 Milan, Italy
| | - Efrat Levy
- Departments of Pharmacology and Psychiatry, New York University School of Medicine, and Nathan S. Kline Institute, Orangeburg, NY 10962, USA
| | - Mario Salmona
- Department of Molecular Biochemistry and Pharmachology, Istituto di Ricerche Farmacologiche “Mario Negri,” 20156 Milan, Italy
| | - Fabrizio Tagliavini
- Division of Neurology and Neuropathology, “Carlo Besta” National Neurological Institute, 20133 Milan, Italy
| |
Collapse
|
30
|
Abstract
Investigations of amyloidogenic diseases use synthetic peptides for cell-free and in vitro studies. However, amyloidogenic peptides often show intrinsic variability that markedly affects the reproducibility of experiments. Proof of physicochemical and biological variability with different batches of amyloidogenic peptides have been reported in literature. Here, we show that differences can be observed even within the same batch of Abeta1-42 peptide after storing lyophilised samples at -20 degrees C. This change (referred to as 'peptide aging') was reproduced with Abeta1-40 peptide samples by using a series of lyophilisation cycles, showing that lyophilisation, rather than preserving the physicochemical and biological features of Abeta peptides, introduces wide variability. To counteract synthetic peptide aging, we set up a procedure involving the sequential use of trifluoroacetic acid, formic acid and sodium hydroxide solutions that disaggregate preformed seeds and enriched Abeta peptide solutions into monomers and low-molecular-weight oligomers. This procedure enabled us to obtain reproducible physicochemical and biological features of Abeta peptides, irrespective of their age.
Collapse
Affiliation(s)
- Claudia Manzoni
- Department of Biochemistry and Molecular Pharmacology, Mario Negri Institute for Pharmacological Research, Milan, Italy.
| | | | | | | | | | | | | |
Collapse
|
31
|
Gerelli Y, Barbieri S, Di Bari MT, Deriu A, Cantù L, Brocca P, Sonvico F, Colombo P, May R, Motta S. Structure of self-organized multilayer nanoparticles for drug delivery. Langmuir 2008; 24:11378-11384. [PMID: 18816016 DOI: 10.1021/la801992t] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The combined use of cryo-TEM, dynamic light scattering, and small-angle X-ray and neutron scattering techniques allows a detailed structural model of complex pharmaceutical preparations of soybean lecithin/chitosan nanoparticles used as drug vectors to be worked out. Charge-driven self-organization of the lipid(-)/polysaccharide(+) vesicles occurs during rapid injection, under mechanical stirring, of an ethanol solution of soybean lecithin into a chitosan aqueous solution. We conclude that beyond the charge inversion region of the phase diagram, i.e., entering the redissolution region, the initial stages of particle formation are likely to be affected by a re-entrant condensation effect at the nanoscale. This behavior resembles that at the mesoscale which is well-known for polyion/amphiphile systems. Close to the boundary of the charge inversion region, nanoparticle formation occurs under a maximum condensation condition at the nanoscale and the complexation-aggregation process is driven toward a maximum multilamellarity. Interestingly, the formulation that maximizes vesicle multilamellarity corresponds to that displaying the highest drug loading efficiency.
Collapse
Affiliation(s)
- Y Gerelli
- Dipartimento di Fisica, Università degli Studi di Parma, Italy
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Corti M, Cantù L. Aggregation Properties of Biological Amphiphiles: Micelles and Vesicles. J Liposome Res 2008. [DOI: 10.3109/08982109309150743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
33
|
Nodari MC, Brocca P, Cantù L, Del Favero E, Corti M, Motta S. The effect of membrane curvature on main phase transition of single component phospholipid LUVs. Chem Phys Lipids 2007. [DOI: 10.1016/j.chemphyslip.2007.06.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
34
|
Sega M, Vallauri R, Brocca P, Cantù L, Melchionna S. Short-Range Structure of a GM3 Ganglioside Membrane: Comparison between Experimental WAXS and Computer Simulation Results. J Phys Chem B 2007; 111:10965-9. [PMID: 17718468 DOI: 10.1021/jp072834a] [Citation(s) in RCA: 13] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The local structure of a GM3 ganglioside bilayer, whose wide-angle X-ray spectrum is reconstructed from molecular dynamics simulations, is found to compare quantitatively well with the experimental one. By separating inter- and intramolecular contributions, correlations between distinct head groups are shown to contribute in a substantial way to the total scattering intensity. This finding supports the hypothesis of a strong local head group order as recently formulated on the basis of calorimetry and X-ray experimental data.
Collapse
Affiliation(s)
- Marcello Sega
- INFM-CNR and Department of Physics, University of Trento, Via Sommarive 14, I-38050 Povo, Trento, Italy
| | | | | | | | | |
Collapse
|
35
|
Brocca P, Cantù L, Corti M, Del Favero E, Motta S, Nodari MC. DC13PC bilayers from anomalous swelling to main transition: An X-ray scattering investigation. J Colloid Interface Sci 2007; 312:34-41. [PMID: 17258762 DOI: 10.1016/j.jcis.2006.12.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2006] [Revised: 12/18/2006] [Accepted: 12/29/2006] [Indexed: 10/23/2022]
Abstract
We have performed small-angle (SAXS) and wide-angle X-ray scattering (WAXS) measurements on the lamellar phase and on large unilamellar vesicles (LUVs) of DC(13)PC in the temperature range corresponding to the anomalous swelling regime of multibilayer systems, adjacent to the chain melting transition, and across the transition. Our SAXS measurements indicate that on cooling from the L(alpha) phase, a uniform progressive swelling of the lamellar system to anomalous distances, starting approximately 2 degrees C above the main transition, is followed by a region of coexistence, covering the width of the transition ( approximately 0.6 degrees C). Across the transition region, a progressively increasing volume fraction of gel phase with a constant P (beta') interlamellar distance coexists with a decreasing amount of nongel phase that keeps on swelling to longer distances. Along both the swelling and the transition regions, anomalies in the specific heat are observed revealing a two-step process. Simultaneous WAXS experiments show a progressive "density" increase along the swelling region, constituting a direct spectroscopic evidence of an "evolving membrane" approaching the transition in a bulk real system. Calorimetric and densitometric measurements on LUVs are also presented, together with WAXS results, that show the existence of a double step main transition in a single component nanosized closed bilayer.
Collapse
Affiliation(s)
- P Brocca
- Department of Chemistry, Biochemistry and Biotechnologies for Medicine, University of Milan, LITA, Via F.lli Cervi, 93 Segrate, Milan, Italy
| | | | | | | | | | | |
Collapse
|
36
|
Brocca P, Cantù L, Corti M, Del Favero E, Raudino A. Intermicellar interactions may induce anomalous size behavior in micelles carrying out bulky heads with multiple spatial arrangements. Langmuir 2007; 23:3067-74. [PMID: 17284058 DOI: 10.1021/la0630864] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We report experimental and theoretical results on the concentration dependence of the micellar size of GM1 and GM1acetyl gangliosides, five-sugar-headed anionic glycolipids. Contrary to one of the mainstays of colloid science, that the aggregation number of amphiphile aggregates grows with concentration, an anomalous region is found at intermediate concentrations, where a sharp decrease of the aggregation number occurs. Experiments were performed by small-angle X-ray and neutron scattering (SAXS and SANS). Two models are discussed, reproducing the observed behavior of either GM1acetyl or GM1. The first one is a conventional picture of interacting micelles where a reduction in the molecular surface area, leading to an increase of the aggregate dimension, is paid to reduce intermicellar interactions: it foresees a monotonous increase of the aggregation number with concentration. The second one accounts for a conformational bistability of the bulky headgroups of GM1, modifying the amphiphilic molecular surface area and protrusion from the aggregate surface, and contributing to the inter- and intramicellar interaction balance. Energy minimization leads to a complex behavior of the aggregation number, which is consistent with the anomalous behavior of GM1.
Collapse
Affiliation(s)
- P Brocca
- Department of Medical Chemistry, Biochemistry and Biotechnologies, L.I.T.A., Viale F.lli Cervi 93, 20090 Segrate, Italy
| | | | | | | | | |
Collapse
|
37
|
Sega M, Garberoglio G, Brocca P, Cantù L. Microscopic Structure of Phospholipid Bilayers: Comparison between Molecular Dynamics Simulations and Wide-Angle X-ray Spectra. J Phys Chem B 2007; 111:2484-9. [PMID: 17315912 DOI: 10.1021/jp065450d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present results of molecular dynamics simulations of fully hydrated dipalmitoylphosphatidylcholine and dimyristoylphosphatidylcholine bilayers in the disordered liquid crystalline phase (Lalpha) and compare them to wide-angle X-ray scattering experiments. Though we find a generally good agreement between the simulated and experimental spectra, there are some deviations whose origin has been investigated by a reparametrization of the aliphatic chains' force field. A detailed analysis of the various contribution to the X-ray spectra shows that a non-negligible contribution to the total scattered intensity comes from the headgroups and the head-tail cross correlation.
Collapse
Affiliation(s)
- Marcello Sega
- CNR-INFM and Department of Physics, University of Trento, Via Sommarive 14, I-38050 Povo (Trento), Italy
| | | | | | | |
Collapse
|
38
|
Brocca P, Cantù L, Corti M, Del Favero E, Motta S, Nodari M. Curved single-bilayers in the region of the anomalous swelling: Effect of curvature and chain length. Colloids Surf A Physicochem Eng Asp 2006. [DOI: 10.1016/j.colsurfa.2006.08.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
39
|
Gobbi M, Colombo L, Morbin M, Mazzoleni G, Accardo E, Vanoni M, Del Favero E, Cantù L, Kirschner DA, Manzoni C, Beeg M, Ceci P, Ubezio P, Forloni G, Tagliavini F, Salmona M. Gerstmann-Sträussler-Scheinker Disease Amyloid Protein Polymerizes According to the “Dock-and-Lock” Model. J Biol Chem 2006; 281:843-9. [PMID: 16286452 DOI: 10.1074/jbc.m506164200] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Prion protein (PrP) amyloid formation is a central feature of genetic and acquired prion diseases such as Gerstmann-Sträussler-Scheinker disease (GSS) and variant Creutzfeldt-Jakob disease. The major component of GSS amyloid is a PrP fragment spanning residues approximately 82-146, which when synthesized as a peptide, readily forms fibrils featuring GSS amyloid. The present study employed surface plasmon resonance (SPR) to characterize the binding events underlying PrP82-146 oligomerization at the first stages of fibrillization, according to evidence suggesting a pathogenic role of prefibrillar oligomers rather than mature amyloid fibrils. We followed in real time the binding reactions occurring during short term (seconds) addition of PrP82-146 small oligomers (1-5-mers, flowing species) onto soluble prefibrillar PrP82-146 aggregates immobilized on the sensor surface. SPR data confirmed very efficient aggregation/elongation, consistent with the hypothesis of nucleation-dependent polymerization process. Much lower binding was observed when PrP82-146 flowed onto the scrambled sequence of PrP82-146 or onto prefibrillar Abeta42 aggregates. As previously found with Abeta40, SPR data could be adequately fitted by equations modeling the "dock-and-lock" mechanism, in which the "locking" step is due to sequential conformational changes, each increasing the affinity of the monomer for the fibril until a condition of irreversible binding is reached. However, these conformational changes (i.e. the locking steps) appear to be faster and easier with PrP82-146 than with Abeta40. Such differences suggest that PrP82-146 has a greater propensity to polymerize and greater stability of the aggregates.
Collapse
Affiliation(s)
- Marco Gobbi
- Istituto di Ricerche Farmacologiche Mario Negri, Milano, Italy.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Brocca P, Cantù L, Del Favero E, Dubois M, Motta S, Tunesi S, Zemb T. Headgroup and chain melting transition in dispersed bilayers of GM3 ganglioside. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.02.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
41
|
Brocca P, Cantù L, Corti M, Del Favero E, Motta S. Shape fluctuations of large unilamellar lipid vesicles observed by laser light scattering: influence of the small-scale structure. Langmuir 2004; 20:2141-2148. [PMID: 15835663 DOI: 10.1021/la035374v] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In the present paper, we apply the dynamic laser light scattering technique to investigate the dependence of the characteristic times of thermally induced shape fluctuation of large unilamellar vesicles (LUVs) on bilayer composition. After addressing single-component LUVs made of two common phospholipids, dimyristoylphosphatidylcholine (DMPC) and dipalmitoylphosphatidylcholine (DPPC), we investigate the changes in vesicle shape fluctuation times due to the presence of cholesterol and gangliosides (GM1), added in small amounts. The experimental results show that the addition of a second component, even in small amount, to DMPC vesicles induces a change in membrane fluctuation times. Moreover, in the case of ganglioside addition, also the disposition of GM1 within the bilayer is of importance. Quite unexpectedly, the symmetric or asymmetric disposition of GM1 has opposite effects on bilayer dynamics, the first resulting in a "hardening" and the second in a "softening" of the membrane. Those results support that the small-scale structure of the bilayer is important in determining the overall dynamics of the vesicle. They also suggest that the physiological disposition of GM1 in the outer leaflet of real cells has a significative result in mechanical terms, positively affecting the dynamics of the membrane.
Collapse
Affiliation(s)
- Paola Brocca
- INFM and Department of Chemistry, Biochemistry and Biotechnologies, The Medical School, University of Milan, LITA, 20090 Segrate, Italy
| | | | | | | | | |
Collapse
|
42
|
Abstract
A concise discussion of the role of different geometrical conformational states in the process of self-assembling of gangliosides is given. The report focuses on the effects of the geometrical variations occurring in the head group region of gangliosides as reflected on the geometrical properties of the whole assembly. Collective phenomena happening at the water interfacial region are found to be coupled to the phase transition of the lipid moiety, that is, to the well-known order-disorder conformational transition involving the hydrophobic tails. The possible biological relevance of the head group bistability is envisaged.
Collapse
Affiliation(s)
- Paola Brocca
- Dipartimento di Chimica e Biochimica Medica, I.N.F.M., Università di Milano, Segrate, Italy
| | | | | | | | | |
Collapse
|
43
|
|
44
|
Foglieni C, Bragonzi A, Cortese M, Cantù L, Boletta A, Chiossone I, Soria MR, Monaco L. Glomerular filtration is required for transfection of proximal tubular cells in the rat kidney following injection of DNA complexes into the renal artery. Gene Ther 2000; 7:279-85. [PMID: 10694807 DOI: 10.1038/sj.gt.3301092] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Gene transfer to the kidney can be achieved with various DNA vectors, resulting in transgene expression in glomerular or tubular districts. Controlling transgene destination is desirable for targeting defined renal cells for specific therapeutic purposes. We previously showed that injection of polyplexes into the rat renal artery resulted in transfection of proximal tubular cells. To investigate whether this process involves glomerular filtration of the DNA-containing particles, fluorescent polyethylenimine polyplexes were prepared, containing fluoresceinated poly-L-lysine. This allowed visualization of the route of the particles into the kidney. Our polyplexes were filtered through the glomerulus, since fluorescent proximal tubuli were observed. Conversely, fluorescent lipopolyplexes containing the cationic lipid DOTAP were never observed in tubular cells. Size measurements by laser light scattering showed that the mean diameter of polyplexes (93 nm) was smaller than that of lipopolyplexes (160 nm). The size of the transfecting particles is therefore a key parameter in this process, as expected by the constraints imposed by the glomerular filtration barrier. This information is relevant, in view of modulating the physico-chemical properties of DNA complexes for optimal transgene expression in tubular cells. Gene Therapy (2000) 7, 279-285.
Collapse
Affiliation(s)
- C Foglieni
- Biotechnology Unit, Dibit, Department of Biological and Technological Research, San Raffaele Scientific Institute, Milan, Italy
| | | | | | | | | | | | | | | |
Collapse
|
45
|
Cantù L, Corti M, Del Favero E, Dubois M, Zemb TN. Combined Small-Angle X-ray and Neutron Scattering Experiments for Thickness Characterization of Ganglioside Bilayers. J Phys Chem B 1998. [DOI: 10.1021/jp972341d] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- L. Cantù
- Dipartimento di Chimica e Biochimica Medica - INFM, Università di Milano, LITA, via F.lli Cervi 93, 20090 Segrate, Italy, and Service de Chimie Moléculaire, CEA Saclay, Bat 125, 91191 Gif sur Yvette, France
| | - M. Corti
- Dipartimento di Chimica e Biochimica Medica - INFM, Università di Milano, LITA, via F.lli Cervi 93, 20090 Segrate, Italy, and Service de Chimie Moléculaire, CEA Saclay, Bat 125, 91191 Gif sur Yvette, France
| | - E. Del Favero
- Dipartimento di Chimica e Biochimica Medica - INFM, Università di Milano, LITA, via F.lli Cervi 93, 20090 Segrate, Italy, and Service de Chimie Moléculaire, CEA Saclay, Bat 125, 91191 Gif sur Yvette, France
| | - M. Dubois
- Dipartimento di Chimica e Biochimica Medica - INFM, Università di Milano, LITA, via F.lli Cervi 93, 20090 Segrate, Italy, and Service de Chimie Moléculaire, CEA Saclay, Bat 125, 91191 Gif sur Yvette, France
| | - Th. N. Zemb
- Dipartimento di Chimica e Biochimica Medica - INFM, Università di Milano, LITA, via F.lli Cervi 93, 20090 Segrate, Italy, and Service de Chimie Moléculaire, CEA Saclay, Bat 125, 91191 Gif sur Yvette, France
| |
Collapse
|
46
|
Cantù L, Corti M, Del Favero E, Dubois M, Zemb T. Comment on “Thermotropic Structural Change of Disialoganglioside Micelles Studied by Using Synchrotron Radiation Small-Angle X-ray Scattering”. J Phys Chem B 1998. [DOI: 10.1021/jp972108f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Laura Cantù
- Department of Medical Chemistry and Biochemistry-INFM, University of Milano, Via Saldini 50, 20133 Milan, Italy, and CEA, C.E. Saclay, Bat. 125, F-91191 Gif-sur-Yvette Cedex, France
| | - Mario Corti
- Department of Medical Chemistry and Biochemistry-INFM, University of Milano, Via Saldini 50, 20133 Milan, Italy, and CEA, C.E. Saclay, Bat. 125, F-91191 Gif-sur-Yvette Cedex, France
| | - Elena Del Favero
- Department of Medical Chemistry and Biochemistry-INFM, University of Milano, Via Saldini 50, 20133 Milan, Italy, and CEA, C.E. Saclay, Bat. 125, F-91191 Gif-sur-Yvette Cedex, France
| | - Monique Dubois
- Department of Medical Chemistry and Biochemistry-INFM, University of Milano, Via Saldini 50, 20133 Milan, Italy, and CEA, C.E. Saclay, Bat. 125, F-91191 Gif-sur-Yvette Cedex, France
| | - Thomas Zemb
- Department of Medical Chemistry and Biochemistry-INFM, University of Milano, Via Saldini 50, 20133 Milan, Italy, and CEA, C.E. Saclay, Bat. 125, F-91191 Gif-sur-Yvette Cedex, France
| |
Collapse
|
47
|
Cantù L, Corti M, Del Favero E, Dubois M, Zemb T. Consistency of microstructural modeling of micelles: letter concerning "thermotropic behavior and stability of monosialoganglioside micelles in aqueous solution". Biophys J 1998; 74:1600-5. [PMID: 9512055 PMCID: PMC1299505 DOI: 10.1016/s0006-3495(98)77871-3] [Citation(s) in RCA: 3] [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: 02/06/2023] Open
|
48
|
Corti M, Boretta M, Cantù L, Del Favero E, Lesieur P. Dependence of the form factor of ganglioside micelles on a conformational change with temperature. J Mol Struct 1996. [DOI: 10.1016/s0022-2860(96)09273-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
49
|
Cantù L, Corti M, Del Favero E, Digirolamo E, Sonnino S, Tettamanti G. Experimental evidence of a temperature-related conformational change of the hydrophilic portion of gangliosides. Chem Phys Lipids 1996; 79:137-45. [PMID: 8640901 DOI: 10.1016/0009-3084(96)02521-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The present paper reports the experimental observation of an interesting thermodynamic process which could be biologically important: such behaviour, shown by some gangliosides, is likely to be peculiar of these glycosidic compounds as it has never been observed for other membrane-type amphiphilic molecules. In water solution, gangliosides have been found to present a bistable behaviour between two stable states (called A and B) which does not involve any change in the primary structure of the molecule. The interconversion between state A and state B, and vice versa, does not occur spontaneously, but has to be triggered by some external agent, which makes this system a potentially regulated process with important biological correlations. In the present experiments, state B is reached from state A with a temperature rise in the range 30-55 degrees C. The new state is stable regardless of any possible temperature cycle. The initial state A is then regained when the ganglioside solution is dried and the solute is redissolved. The two states are believed to correspond to two different conformations of the hydrophilic portion of the molecule. The bistable behaviour is shown by the gangliosides GM2, GM1, GD1a, GD1b and Fuc-GD1b, GT1b, however, does not show such an effect.
Collapse
Affiliation(s)
- L Cantù
- Department of Medical Chemistry and Biochemistry, Medical School, University of Milan, Italy
| | | | | | | | | | | |
Collapse
|
50
|
Abstract
The aggregative properties of the ganglioside GM3 have been studied with small-angle X-ray scattering and dynamic light scattering in dilute aqueous solutions. Dynamic light scattering experiments show that GM3 solutions are very polydisperse containing a large amount of small aggregates (hydrodynamic radius of 7-9 nm) in addition to a quite broad distribution of aggregates with an average hydrodynamic radius of 50-60 nm and a small fraction of very large aggregates (> 200 nm). This together with small-angle X-ray scattering scattering experiments and model calculations suggests the coexistence of a lamellar phase (vesicles or extended lamellae) with small aggregates (modelled as lamellar platelets). The latter can also be viewed as lamellar fragments coming from GM3 vesicles which constantly break and reform.
Collapse
Affiliation(s)
- N Maurer
- Institute of Physical Chemistry, Karl-Franzens University of Graz, Austria
| | | | | |
Collapse
|