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Chiesa E, Caimi A, Bellotti M, Giglio A, Conti B, Dorati R, Auricchio F, Genta I. Effect of Micromixer Design on Lipid Nanocarriers Manufacturing for the Delivery of Proteins and Nucleic Acids. Pharmaceutics 2024; 16:507. [PMID: 38675169 PMCID: PMC11054535 DOI: 10.3390/pharmaceutics16040507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
Lipid-based nanocarriers have emerged as helpful tools to deliver sensible biomolecules such as proteins and oligonucleotides. To have a fast and robust microfluidic-based nanoparticle synthesis method, the setup of versatile equipment should allow for the rapid transfer to scale cost-effectively while ensuring tunable, precise and reproducible nanoparticle attributes. The present work aims to assess the effect of different micromixer geometries on the manufacturing of lipid nanocarriers taking into account the influence on the mixing efficiency by changing the fluid-fluid interface and indeed the mass transfer. Since the geometry of the adopted micromixer varies from those already published, a Design of Experiment (DoE) was necessary to identify the operating (total flow, flow rate ratio) and formulation (lipid concentration, lipid molar ratios) parameters affecting the nanocarrier quality. The suitable application of the platform was investigated by producing neutral, stealth and cationic liposomes, using DaunoXome®, Myocet®, Onivyde® and Onpattro® as the benchmark. The effect of condensing lipid (DOTAP, 3-10-20 mol%), coating lipids (DSPE-PEG550 and DSPE-PEG2000), as well as structural lipids (DSPC, eggPC) was pointed out. A very satisfactory encapsulation efficiency, always higher than 70%, was successfully obtained for model biomolecules (myoglobin, short and long nucleic acids).
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Affiliation(s)
- Enrica Chiesa
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (E.C.); (A.G.); (B.C.); (R.D.)
| | - Alessandro Caimi
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, 27100 Pavia, Italy; (A.C.); (M.B.)
| | - Marco Bellotti
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, 27100 Pavia, Italy; (A.C.); (M.B.)
| | - Alessia Giglio
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (E.C.); (A.G.); (B.C.); (R.D.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (E.C.); (A.G.); (B.C.); (R.D.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (E.C.); (A.G.); (B.C.); (R.D.)
| | - Ferdinando Auricchio
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, 27100 Pavia, Italy; (A.C.); (M.B.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (E.C.); (A.G.); (B.C.); (R.D.)
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Rosalia M, Giacomini M, Tottoli EM, Dorati R, Bruni G, Genta I, Chiesa E, Pisani S, Sampaolesi M, Conti B. Investigation on Electrospun and Solvent-Casted PCL-PLGA Blends Scaffolds Embedded with Induced Pluripotent Stem Cells for Tissue Engineering. Pharmaceutics 2023; 15:2736. [PMID: 38140077 PMCID: PMC10747843 DOI: 10.3390/pharmaceutics15122736] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/27/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
The design, production, and characterisation of tissue-engineered scaffolds made of polylactic-co-glycolic acid (PLGA), polycaprolactone (PCL) and their blends obtained through electrospinning (ES) or solvent casting/particulate leaching (SC) manufacturing techniques are presented here. The polymer blend composition was chosen to always obtain a prevalence of one of the two polymers, in order to investigate the contribution of the less concentrated polymer on the scaffolds' properties. Physical-chemical characterization of ES scaffolds demonstrated that tailoring of fibre diameter and Young modulus (YM) was possible by controlling PCL concentration in PLGA-based blends, increasing the fibre diameter from 0.6 to 1.0 µm and reducing the YM from about 22 to 9 MPa. SC scaffolds showed a "bubble-like" topography, caused by the porogen spherical particles, which is responsible for decreasing the contact angles from about 110° in ES scaffolds to about 74° in SC specimens. Nevertheless, due to phase separation within the blend, solvent-casted samples displayed less reproducible properties. Furthermore, ES samples were characterised by 10-fold higher water uptake than SC scaffolds. The scaffolds suitability as iPSCs culturing support was evaluated using XTT assay, and pluripotency and integrin gene expression were investigated using RT-PCR and RT-qPCR. Thanks to their higher wettability and appropriate YM, SC scaffolds seemed to be superior in ensuring high cell viability over 5 days, whereas the ability to maintain iPSCs pluripotency status was found to be similar for ES and SC scaffolds.
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Affiliation(s)
- Mariella Rosalia
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
| | - Martina Giacomini
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
| | - Erika Maria Tottoli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
| | - Giovanna Bruni
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (C.S.G.I.), Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 10, 27100 Pavia, Italy;
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
| | - Silvia Pisani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
| | - Maurilio Sampaolesi
- Translational Cardiomyology Laboratory, Head Unit of Stem Cell and Developmental Biology (SCDB), Head Department of Development and Regeneration, KU Leuven, ON4 Herestraat 49, Box 804, 3000 Leuven, Belgium;
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (M.R.); (M.G.); (E.M.T.); (R.D.); (I.G.); (E.C.); (S.P.)
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Di Gravina GM, Bari E, Croce S, Scocozza F, Pisani S, Conti B, Avanzini MA, Auricchio F, Cobianchi L, Torre ML, Conti M. Design and development of a hepatic lyo-dECM powder as a biomimetic component for 3D-printable hybrid hydrogels. Biomed Mater 2023; 19:015005. [PMID: 37992318 DOI: 10.1088/1748-605x/ad0ee2] [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: 08/29/2023] [Accepted: 11/22/2023] [Indexed: 11/24/2023]
Abstract
Bioprinting offers new opportunities to obtain reliable 3Din vitromodels of the liver for testing new drugs and studying pathophysiological mechanisms, thanks to its main feature in controlling the spatial deposition of cell-laden hydrogels. In this context, decellularized extracellular matrix (dECM)-based hydrogels have caught more and more attention over the last years because of their characteristic to closely mimic the tissue-specific microenvironment from a biological point of view. In this work, we describe a new concept of designing dECM-based hydrogels; in particular, we set up an alternative and more practical protocol to develop a hepatic lyophilized dECM (lyo-dECM) powder as an 'off-the-shelf' and free soluble product to be incorporated as a biomimetic component in the design of 3D-printable hybrid hydrogels. To this aim, the powder was first characterized in terms of cytocompatibility on human and porcine mesenchymal stem cells (MSCs), and the optimal powder concentration (i.e. 3.75 mg ml-1) to use in the hydrogel formulation was identified. Moreover, its non-immunogenicity and capacity to reactivate the elastase enzyme potency was proved. Afterward, as a proof-of-concept, the powder was added to a sodium alginate/gelatin blend, and the so-defined multi-component hydrogel was studied from a rheological point of view, demonstrating that adding the lyo-dECM powder at the selected concentration did not alter the viscoelastic properties of the original material. Then, a printing assessment was performed with the support of computational simulations, which were useful to definea priorithe hydrogel printing parameters as window of printability and its post-printing mechanical collapse. Finally, the proposed multi-component hydrogel was bioprinted with cells inside, and its post-printing cell viability for up to 7 d was successfully demonstrated.
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Affiliation(s)
- Giulia M Di Gravina
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
- Department of Industrial and Information Engineering, University of Pavia, Pavia, Italy
| | - Elia Bari
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Stefania Croce
- Department of General Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Franca Scocozza
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
| | - Silvia Pisani
- Department of Drug Science, University of Pavia, Pavia, Italy
| | - Bice Conti
- Department of Drug Science, University of Pavia, Pavia, Italy
| | - Maria A Avanzini
- Pediatric Hematology Oncology Unit and Cell Factory, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Ferdinando Auricchio
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
| | - Lorenzo Cobianchi
- Department of General Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Maria Luisa Torre
- Department of Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
- PharmaExceed s.r.l., Pavia, Italy
| | - Michele Conti
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
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Pisani S, Mauri V, Negrello E, Friuli V, Genta I, Dorati R, Bruni G, Marconi S, Auricchio F, Pietrabissa A, Benazzo M, Conti B. Hybrid 3D-Printed and Electrospun Scaffolds Loaded with Dexamethasone for Soft Tissue Applications. Pharmaceutics 2023; 15:2478. [PMID: 37896239 PMCID: PMC10609822 DOI: 10.3390/pharmaceutics15102478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/01/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND To make the regenerative process more effective and efficient, tissue engineering (TE) strategies have been implemented. Three-dimensional scaffolds (electrospun or 3D-printed), due to their suitable designed architecture, offer the proper location of the position of cells, as well as cell adhesion and the deposition of the extracellular matrix. Moreover, the possibility to guarantee a concomitant release of drugs can promote tissue regeneration. METHODS A PLA/PCL copolymer was used for the manufacturing of electrospun and hybrid scaffolds (composed of a 3D-printed support coated with electrospun fibers). Dexamethasone was loaded as an anti-inflammatory drug into the electrospun fibers, and the drug release kinetics and scaffold biological behavior were evaluated. RESULTS The encapsulation efficiency (EE%) was higher than 80%. DXM embedding into the electrospun fibers resulted in a slowed drug release rate, and a slower release was seen in the hybrid scaffolds. The fibers maintained their nanometric dimensions (less than 800 nm) even after deposition on the 3D-printed supports. Cell adhesion and proliferation was favored in the DXM-loading hybrid scaffolds. CONCLUSIONS The hybrid scaffolds that were developed in this study can be optimized as a versatile platform for soft tissue regeneration.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Valeria Mauri
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy; (V.M.); (E.N.); (A.P.)
| | - Erika Negrello
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy; (V.M.); (E.N.); (A.P.)
| | - Valeria Friuli
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
| | - Giovanna Bruni
- Consorzio per lo Sviluppo dei Sistemi a Grande Interfase (C.S.G.I.), Department of Chemistry, Physical Chemistry Section, University of Pavia, 27100 Pavia, Italy;
| | - Stefania Marconi
- Department of Civil Engineering and Architecture, University of Pavia, 27100 Pavia, Italy;
- Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy;
| | - Ferdinando Auricchio
- Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy;
| | - Andrea Pietrabissa
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy; (V.M.); (E.N.); (A.P.)
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
| | - Marco Benazzo
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
- Integrated Unit of Experimental Surgery, Advanced Microsurgery and Regenerative Medicine, Università degli Studi di Pavia, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli, 12, 27100 Pavia, Italy; (V.F.); (I.G.); (R.D.); (B.C.)
- Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy;
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Tottoli EM, Benedetti L, Riva F, Chiesa E, Pisani S, Bruni G, Genta I, Conti B, Ceccarelli G, Dorati R. Electrospun Fibers Loaded with Pirfenidone: An Innovative Approach for Scar Modulation in Complex Wounds. Polymers (Basel) 2023; 15:4045. [PMID: 37896289 PMCID: PMC10610295 DOI: 10.3390/polym15204045] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/03/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023] Open
Abstract
Hypertrophic scars (HTSs) are pathological structures resulting from chronic inflammation during the wound healing process, particularly in complex injuries like burns. The aim of this work is to propose Biofiber PF (biodegradable fiber loaded with Pirfenidone 1.5 w/w), an electrospun advanced dressing, as a solution for HTSs treatment in complex wounds. Biofiber has a 3-day antifibrotic action to modulate the fibrotic process and enhance physiological healing. Its electrospun structure consists of regular well-interconnected Poly-L-lactide-co-poly-ε-caprolactone (PLA-PCL) fibers (size 2.83 ± 0.46 µm) loaded with Pirfenidone (PF, 1.5% w/w), an antifibrotic agent. The textured matrix promotes the exudate balance through mild hydrophobic wettability behavior (109.3 ± 2.3°), and an appropriate equilibrium between the absorbency % (610.2 ± 171.54%) and the moisture vapor transmission rate (0.027 ± 0.036 g/min). Through its finer mechanical properties, Biofiber PF is conformable to the wound area, promoting movement and tissue oxygenation. These features also enhance the excellent elongation (>500%) and tenacity, both in dry and wet conditions. The ancillary antifibrotic action of PF on hypertrophic scar fibroblast (HSF) for 3 days downregulates the cell proliferation over time and modulates the gene expression of transforming growth factor β1 (TGF-β1) and α-smooth muscle actin (α-SMA) at 48-72 h. After 6 days of treatment, a decrement of α-SMA protein levels was detected, proving the potential of biofiber as a valid therapeutic treatment for HTSs in an established wound healing process.
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Affiliation(s)
- Erika Maria Tottoli
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (E.M.T.); (E.C.); (S.P.); (I.G.); (B.C.)
| | - Laura Benedetti
- Department of Public Health, Experimental Medicine and Forensic, Human Anatomy Unit, University of Pavia, 27100 Pavia, Italy; (L.B.); (G.C.)
- CHT Center for Health Technologies, University of Pavia, 27100 Pavia, Italy
| | - Federica Riva
- Department of Public Health, Experimental Medicine and Forensic, Histology and Embryology Unit, University of Pavia, 27100 Pavia, Italy;
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (E.M.T.); (E.C.); (S.P.); (I.G.); (B.C.)
| | - Silvia Pisani
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (E.M.T.); (E.C.); (S.P.); (I.G.); (B.C.)
| | - Giovanna Bruni
- Physical-Chemistry Section, Department of Chemistry, University of Pavia, 27100 Pavia, Italy;
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (E.M.T.); (E.C.); (S.P.); (I.G.); (B.C.)
- CHT Center for Health Technologies, University of Pavia, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (E.M.T.); (E.C.); (S.P.); (I.G.); (B.C.)
- CHT Center for Health Technologies, University of Pavia, 27100 Pavia, Italy
| | - Gabriele Ceccarelli
- Department of Public Health, Experimental Medicine and Forensic, Human Anatomy Unit, University of Pavia, 27100 Pavia, Italy; (L.B.); (G.C.)
- CHT Center for Health Technologies, University of Pavia, 27100 Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (E.M.T.); (E.C.); (S.P.); (I.G.); (B.C.)
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Pisani S, Di Martino D, Cerri S, Genta I, Dorati R, Bertino G, Benazzo M, Conti B. Investigation and Comparison of Active and Passive Encapsulation Methods for Loading Proteins into Liposomes. Int J Mol Sci 2023; 24:13542. [PMID: 37686348 PMCID: PMC10487800 DOI: 10.3390/ijms241713542] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
In this work, four different active encapsulation methods, microfluidic (MF), sonication (SC), freeze-thawing (FT), and electroporation (EP), were investigated to load a model protein (bovine serum albumin-BSA) into neutral liposomes made from 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC):cholesterol (Chol) and charged liposomes made from DSPC:Chol:Dioleoyl-3-trimethylammonium propane (DOTAP), DSPC:Chol:1,2-dioleoyl-sn-glycero-3-phospho-L-serine (DOPS), and DSPC:Chol:phosphatidylethanolamine (PE). The aim was to increase the protein encapsulation efficiency (EE%) by keeping the liposome size below 200 nm and the PDI value below 0.7, which warrants a nearly monodisperse preparation. Electroporation (100 V) yielded the best results in terms of EE%, with a dramatic increase in liposome size (>600 nm). The FT active-loading method, either applied to neutral or charged liposomes, allowed for obtaining suitable EE%, keeping the liposome size range below 200 nm with a suitable PDI index. Cationic liposomes (DSPC:Chol:DOTAP) loaded with the FT active method showed the best results in terms of EE% (7.2 ± 0.8%) and size (131.2 ± 11.4 nm, 0.140 PDI). In vitro release of BSA from AM neutral and charged liposomes resulted slower compared to PM liposomes and was affected by incubation temperature (37 °C, 4 °C). The empty charged liposomes tested for cell viability on Human Normal Dermal Fibroblast (HNDF) confirmed their cytocompatibility also at high concentrations (1010 particles/mL) and cellular uptake at 4 °C and 37 °C. It can be concluded that even if both microfluidic passive and active methods are more easily transferable to an industrial scale, the FT active-loading method turned out to be the best in terms of BSA encapsulation efficiencies, keeping liposome size below 200 nm.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Sciences, University of Pavia, Viale T. Taramelli 12, 27100 Pavia, Italy; (S.P.); (I.G.); (R.D.)
| | - Deborah Di Martino
- Unit of Cellular and Molecular Neurobiology, IRCCS Mondino Foundation, Via Mondino 2, 27100 Pavia, Italy; (D.D.M.); (S.C.)
| | - Silvia Cerri
- Unit of Cellular and Molecular Neurobiology, IRCCS Mondino Foundation, Via Mondino 2, 27100 Pavia, Italy; (D.D.M.); (S.C.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale T. Taramelli 12, 27100 Pavia, Italy; (S.P.); (I.G.); (R.D.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale T. Taramelli 12, 27100 Pavia, Italy; (S.P.); (I.G.); (R.D.)
| | - Giulia Bertino
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (G.B.); (M.B.)
| | - Marco Benazzo
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (G.B.); (M.B.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale T. Taramelli 12, 27100 Pavia, Italy; (S.P.); (I.G.); (R.D.)
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Basile S, Mathew E, Genta I, Conti B, Dorati R, Lamprou DA. Optimization of FDM 3D printing process parameters to produce haemodialysis curcumin-loaded vascular grafts. Drug Deliv Transl Res 2023; 13:2058-2071. [PMID: 34642844 PMCID: PMC10315350 DOI: 10.1007/s13346-021-01078-2] [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] [Accepted: 10/05/2021] [Indexed: 10/20/2022]
Abstract
3D printing has provided a new prospective in the manufacturing of personalized medical implants, including fistulas for haemodialysis (HD). In the current study, an optimized fused modelling deposition (FDM) 3D printing method has been validated, for the first time, to obtain cylindrical shaped fistulas. Printing parameters were evaluated for the manufacturing of fistulas using blank and 0.25% curcumin-loaded filaments that were produced by hot melt extrusion (HME). Four different fistula types have been designed and characterized using a variety of physicochemical characterization methods. Each design was printed three times to demonstrate printing process accuracy considering outer and inner diameter, wall thickness, width, and length. A thermoplastic polyurethane (TPU) biocompatible elastomer was chosen, showing good mechanical properties with a high elastic modulus and maximum elongation, as well as stability at high temperatures with less than 0.8% of degradation at the range between 25 and 250 °C. Curcumin release profile has been evaluated in a saline buffer, obtaining a low release (12%) and demonstrating drug could continue release for a longer period, and for as long as grafts should remain in patient body. Possibility to produce drug-loaded grafts using one-step method as well as 3D printing process and TPU filaments containing curcumin printability has been demonstrated.
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Affiliation(s)
- Sara Basile
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Essyrose Mathew
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy.
| | - Dimitrios A Lamprou
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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Rosalia M, Grisoli P, Dorati R, Chiesa E, Pisani S, Bruni G, Genta I, Conti B. Influence of Electrospun Fibre Secondary Morphology on Antibiotic Release Kinetic and Its Impact on Antimicrobic Efficacy. Int J Mol Sci 2023; 24:12108. [PMID: 37569489 PMCID: PMC10418872 DOI: 10.3390/ijms241512108] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Vascular graft infections are a severe complication in vascular surgery, with a high morbidity and mortality. Prevention and treatment involve the use of antibiotic- or antiseptic-impregnated artificial vascular grafts, but currently, there are no commercially available infection-proof small-diameter vascular grafts (SDVGs). In this work we investigated the antimicrobic activity of two SDVGs prototypes loaded with tobramycin and produced via the electrospinning of drug-doped PLGA (polylactide-co-glycolide) solutions. Differences in rheological and conductivity properties of the polymer solutions resulted in non-identical fibre morphology that deeply influenced the hydration profile and consequently the in vitro cumulative drug release, which was investigated by using a spectrofluorimetric technique. Using DDSolver Excel add-in, modelling of the drug release kinetic was performed to evaluate the release mechanism involved: Prototype 1 showed a sustained and diffusive driven drug release, which allowed for the complete elution of tobramycin within 2 weeks, whereas Prototype 2 resulted in a more extended drug release controlled by both diffusion and matrix relaxation. Time-kill assays performed on S. aureus and E. coli highlighted the influence of burst drug release on the decay rate of bacterial populations, with Prototype 1 being more efficient on both microorganisms. Nevertheless, both prototypes showed good antimicrobic activity over the 5 days of in vitro testing.
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Affiliation(s)
- Mariella Rosalia
- Department of Drug Sciences, Pharmaceutical Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (M.R.); (R.D.); (E.C.); (S.P.); (I.G.)
| | - Pietro Grisoli
- Department of Drug Sciences, Pharmacological Section, University of Pavia, Via Taramelli 16, 27100 Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, Pharmaceutical Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (M.R.); (R.D.); (E.C.); (S.P.); (I.G.)
| | - Enrica Chiesa
- Department of Drug Sciences, Pharmaceutical Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (M.R.); (R.D.); (E.C.); (S.P.); (I.G.)
| | - Silvia Pisani
- Department of Drug Sciences, Pharmaceutical Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (M.R.); (R.D.); (E.C.); (S.P.); (I.G.)
| | - Giovanna Bruni
- Consorzio per lo Sviluppo dei Sistemi a Grande Interfase (C.S.G.I.), Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 10, 27100 Pavia, Italy;
| | - Ida Genta
- Department of Drug Sciences, Pharmaceutical Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (M.R.); (R.D.); (E.C.); (S.P.); (I.G.)
| | - Bice Conti
- Department of Drug Sciences, Pharmaceutical Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (M.R.); (R.D.); (E.C.); (S.P.); (I.G.)
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9
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Pisani S, Mauri V, Negrello E, Mauramati S, Alaimo G, Auricchio F, Benazzo M, Dorati R, Genta I, Conti B, Ferretti VV, De Silvestri A, Pietrabissa A, Marconi S. Assessment of different manufacturing techniques for the production of bioartificial scaffolds as soft organ transplant substitutes. Front Bioeng Biotechnol 2023; 11:1186351. [PMID: 37441194 PMCID: PMC10333585 DOI: 10.3389/fbioe.2023.1186351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/13/2023] [Indexed: 07/15/2023] Open
Abstract
Introduction: The problem of organs' shortage for transplantation is widely known: different manufacturing techniques such as Solvent casting, Electrospinning and 3D Printing were considered to produce bioartificial scaffolds for tissue engineering purposes and possible transplantation substitutes. The advantages of manufacturing techniques' combination to develop hybrid scaffolds with increased performing properties was also evaluated. Methods: Scaffolds were produced using poly-L-lactide-co-caprolactone (PLA-PCL) copolymer and characterized for their morphological, biological, and mechanical features. Results: Hybrid scaffolds showed the best properties in terms of viability (>100%) and cell adhesion. Furthermore, their mechanical properties were found to be comparable with the reference values for soft tissues (range 1-10 MPa). Discussion: The created hybrid scaffolds pave the way for the future development of more complex systems capable of supporting, from a morphological, mechanical, and biological standpoint, the physiological needs of the tissues/organs to be transplanted.
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Affiliation(s)
- Silvia Pisani
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Valeria Mauri
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Erika Negrello
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Simone Mauramati
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Gianluca Alaimo
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
| | - Ferdinando Auricchio
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
| | - Marco Benazzo
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | | | - Annalisa De Silvestri
- SSD Biostatistica e Clinical Trial Center, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Andrea Pietrabissa
- SC General Surgery 2, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
- Department of Surgery, University of Pavia, Pavia, Italy
| | - Stefania Marconi
- Department of Civil Engineering and Architecture, University of Pavia, Pavia, Italy
- Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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10
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Pisani S, Genta I, Modena T, Dorati R, Bruni G, Benazzo M, Conti B. A proof of concept to define the parameters affecting poly-L-lactide-co-poly-ε-caprolactone shape memory electrospun nanofibers for biomedical applications. Drug Deliv Transl Res 2023; 13:593-607. [PMID: 35978259 PMCID: PMC9794533 DOI: 10.1007/s13346-022-01218-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2022] [Indexed: 12/31/2022]
Abstract
This study is a proof of concept performed to evaluate process parameters affecting shape memory effect of copolymer poly-L-lactide-co-poly-ε-caprolactone (PLA:PCL) 70:30 ratio based nanofibrous scaffolds. A design of experiment (DOE) statistical approach was used to define the interaction between independent material and process variables related to electrospun scaffold manufacturing, such as polymer solution concentration (w/v%), spinning time (min), and needle size (Gauge), and their influence on Rf% (ability of the scaffold to maintain the induced temporary shape) and Rr% (ability of the scaffold to recover its original shape) outputs. A mathematical model was obtained from DOE useful to predict scaffold Rf% and Rr% values. PLA-PCL 15% w/v, 22G needle, and 20-min spinning time were selected to confirm the data obtained from theoretical model. Subsequent morphological (SEM), chemical-physical (GPC and DSC), mechanical (uniaxial tensile tests), and biological (cell viability and adhesion) characterizations were performed.
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Affiliation(s)
- Silvia Pisani
- grid.419425.f0000 0004 1760 3027Department of Surgical Sciences, Otorhinolaryngology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Ida Genta
- grid.8982.b0000 0004 1762 5736Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Tiziana Modena
- grid.8982.b0000 0004 1762 5736Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Rossella Dorati
- grid.8982.b0000 0004 1762 5736Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy
| | - Giovanna Bruni
- grid.8982.b0000 0004 1762 5736Department of Chemistry, Physico-Chemical Section, University of Pavia, Via Taramelli 14, 27100 Pavia, Italy
| | - Marco Benazzo
- grid.419425.f0000 0004 1760 3027Department of Surgical Sciences, Otorhinolaryngology Unit, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100, Pavia, Italy.
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11
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Rosalia M, Chiesa E, Tottoli EM, Dorati R, Genta I, Conti B, Pisani S. Tobramycin Nanoantibiotics and Their Advantages: A Minireview. Int J Mol Sci 2022; 23:ijms232214080. [PMID: 36430555 PMCID: PMC9692674 DOI: 10.3390/ijms232214080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
Nowadays, antimicrobial resistance (AMR) represents a challenge for antibiotic therapy, mostly involving Gram-negative bacteria. Among the strategies activated to overcome AMR, the repurposing of already available antimicrobial molecules by encapsulating them in drug delivery systems, such as nanoparticles (NPs) and also engineered NPs, seems to be promising. Tobramycin is a powerful and effective aminoglycoside, approved for complicated infections and reinfections and indicated mainly against Gram-negative bacteria, such as Pseudomonas aeruginosa, Escherichia coli, Proteus, Klebsiella, Enterobacter, Serratia, Providencia, and Citrobacter species. However, the drug presents several side effects, mostly due to dose frequency, and for this reason, it is a good candidate for nanomedicine formulation. This review paper is focused on what has been conducted in the last 20 years for the development of Tobramycin nanosized delivery systems (nanoantibiotics), with critical discussion and comparison. Tobramycin was selected as the antimicrobial drug because it is a wide-spectrum antibiotic that is effective against both Gram-positive and Gram-negative aerobic bacteria, and it is characterized by a fast bactericidal effect, even against multidrug-resistant microorganisms (MDR).
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Affiliation(s)
- Mariella Rosalia
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Erika Maria Tottoli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
- Correspondence: ; Tel.: +39-03-8298-7378
| | - Silvia Pisani
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
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12
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Di Luca M, Hoskins C, Corduas F, Onchuru R, Oluwasanmi A, Mariotti D, Conti B, Lamprou DA. 3D Printed Biodegradable Multifunctional Implants for Effective Breast Cancer Treatment. Int J Pharm 2022; 629:122363. [DOI: 10.1016/j.ijpharm.2022.122363] [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] [Received: 09/05/2022] [Revised: 10/28/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
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13
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Chiesa E, Bellotti M, Caimi A, Conti B, Dorati R, Conti M, Genta I, Auricchio F. Development and optimization of microfluidic assisted manufacturing process to produce PLGA nanoparticles. Int J Pharm 2022; 629:122368. [DOI: 10.1016/j.ijpharm.2022.122368] [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] [Received: 08/10/2022] [Revised: 10/29/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
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14
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Pisani S, Bertino G, Prina-Mello A, Locati LD, Mauramati S, Genta I, Dorati R, Conti B, Benazzo M. Electroporation in Head-and-Neck Cancer: An Innovative Approach with Immunotherapy and Nanotechnology Combination. Cancers (Basel) 2022; 14:5363. [PMID: 36358782 PMCID: PMC9658293 DOI: 10.3390/cancers14215363] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 07/30/2023] Open
Abstract
Squamous cell carcinoma is the most common malignancy that arises in the head-and-neck district. Traditional treatment could be insufficient in case of recurrent and/or metastatic cancers; for this reason, more selective and enhanced treatments are in evaluation in preclinical and clinical trials to increase in situ concentration of chemotherapy drugs promoting a selectively antineoplastic activity. Among all cancer treatment types (i.e., surgery, chemotherapy, radiotherapy), electroporation (EP) has emerged as a safe, less invasive, and effective approach for cancer treatment. Reversible EP, using an intensive electric stimulus (i.e., 1000 V/cm) applied for a short time (i.e., 100 μs), determines a localized electric field that temporarily permealizes the tumor cell membranes while maintaining high cell viability, promoting cytoplasm cell uptake of antineoplastic agents such as bleomycin and cisplatin (electrochemotherapy), calcium (Ca2+ electroporation), siRNA and plasmid DNA (gene electroporation). The higher intracellular concentration of antineoplastic agents enhances the antineoplastic activity and promotes controlled tumor cell death (apoptosis). As secondary effects, localized EP (i) reduces the capillary blood flow in tumor tissue ("vascular lock"), lowering drug washout, and (ii) stimulates the immune system acting against cancer cells. After years of preclinical development, electrochemotherapy (ECT), in combination with bleomycin or cisplatin, is currently one of the most effective treatments used for cutaneous metastases and primary skin and mucosal cancers that are not amenable to surgery. To reach this clinical evidence, in vitro and in vivo models were preclinically developed for evaluating the efficacy and safety of ECT on different tumor cell lines and animal models to optimize dose and administration routes of drugs, duration, and intensity of the electric field. Improvements in reversible EP efficacy are under evaluation for HNSCC treatment, where the focus is on the development of a combination treatment between EP-enhanced nanotechnology and immunotherapy strategies.
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Affiliation(s)
- Silvia Pisani
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy
| | - Giulia Bertino
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy
| | - Adriele Prina-Mello
- LBCAM, Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin 8, Ireland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, DO2 W085 Dublin, Ireland
| | - Laura Deborah Locati
- Translational Oncology, IRCCS ICS Maugeri, 27100 Pavia, Italy
- Department of Internal Medicine and Therapeutics, University of Pavia, 27100 Pavia, Italy
| | - Simone Mauramati
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Marco Benazzo
- Department of Otorhinolaryngology, Fondazione IRCCS Policlinico San Matteo, Viale Camillo Golgi, 19, 27100 Pavia, Italy
- Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
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15
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Battaglia LS, Dorati R, Maestrelli F, Conti B, Gabriele M, Di Cesare Mannelli L, Selmin F, Cosco D. Repurposing of parenterally administered active substances used to treat pain both systemically and locally. Drug Discov Today 2022; 27:103321. [PMID: 35850432 DOI: 10.1016/j.drudis.2022.07.006] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 06/24/2022] [Accepted: 07/12/2022] [Indexed: 12/15/2022]
Abstract
Pain is a constant in our lives. The efficacy of drug therapy administered by the parenteral route is often limited either by the physicochemical characteristics of the drug itself or its adsorption-distribution-metabolism-excretion (ADME) mechanisms. One promising alternative is the design of innovative drug delivery systems that can improve the pharmacokinetics |(PK) and/or reduce the toxicity of traditionally used drugs. In this review, we discuss several products that have been approved by the main regulatory agencies (i.e., nano- and microsystems, implants, and oil-based solutions), highlighting the newest technologies that govern both locally and systemically the delivery of drugs. Finally, we also discuss the risk assessment of the scale-up process required, given the impact that this approach could have on drug manufacturing. Teaser: The management of pain by way of the parenteral route can be improved using complex drug delivery systems (e.g., micro- and nanosystems) which require high-level assessment and shorten the regulatory pathway.
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Affiliation(s)
- Luigi S Battaglia
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Rossella Dorati
- Department of Drug Science, University of Pavia, Pavia, Italy
| | | | - Bice Conti
- Department of Drug Science, University of Pavia, Pavia, Italy
| | - Mirko Gabriele
- Patheon Italia SPA, Thermo Fisher Scientific, Ferentino, Italy; President Elect, PDA Italy Chapter
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Francesca Selmin
- Department of Pharmaceutical Science, University of Milan, Milan, Italy.
| | - Donato Cosco
- Department of Health Sciences, Magna Græcia University of Catanzaro, Catanzaro, Italy
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16
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Maria Tottoli E, Chiesa E, Ceccarelli G, Pisani S, Bruni G, Genta I, Conti B, Dorati R. BioFiber: An advanced fibrous textured dressing to manage exudate in severe wounds. Int J Pharm 2022; 625:122073. [PMID: 35931393 DOI: 10.1016/j.ijpharm.2022.122073] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/29/2022] [Accepted: 07/31/2022] [Indexed: 10/16/2022]
Abstract
Biofiber is a new generation of highly absorbent, and textured bandage with patented fiber technology. Biofiber has a sophisticated texture that provides an optimum balance of moisture, flexibility, and conformability, and it has been developed with specific properties to treat complex injuries like burns. The dressing has been designed to be completely adaptable to human anatomy, and it can be fitted to any part of the body, adapting to all curves and jointures, as well as fitting the facial features. Prototypes of PLA-PCL-based textured bandages were developed by electrospinning, characterized, and evaluated for complex wound care. The texture is both esthetic and functional; fibers were uniformly sized (2.2 ± 0.8 and 4.5 ± 0.3 µm) and well interconnected. The texture facilitates vertical absorption of exudate up to 2.5 g/g of bandage, and the high contact angle values (120 - 100°) create an optimum balance of moisture for the healing process. The textured prototypes turned out to be extremely stable; no sign of bandage debris was found by the standard test, BS EN 13726-1.7. In addition, the round texture (3R) showed improvements in tensile strength (0.27 ± 0.019 MPa), ultimate tensile strength (0.83 ± 0.05 MPa) with higher breaking point (0.91 ± 0.05 MPa) compared to control (Mepilex Lite®). The amount of albumin (BSA) and Fibrinogen (Fb) adhered on textured fiber prototypes was calculated by BCA Assay, all prototypes demonstrated strong BSA (ranging from 81.66 ± 8.93 to 182.73 ± 2.07 μg protein/mg dressing) and enhanced Fb shielding (ranging from 108.25 ± 7.3 to 238.12 ± 17.76 μg protein/mg dressing). Their MVTR values ranged from 2313.27 ± 58.86 to 2603.33 ± 50.41 g/m2· day and vertical wicking heights were between 24.6 ± 2.5 and 29.3 ± 4.1 mm; biological tests demonstrated good compatibility of prototypes (cell vitality > 70 %), percentage of cells attachment was in-between 114 and 225 %. The extent of attachment depends on texture, differing topographical patterns presented higher attachment compared with both CTR + and 1P prototype (no texture). Cells were growth on textured fiber prototypes, and the extent of proliferation depend on incubation time.
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Affiliation(s)
| | - Enrica Chiesa
- Department of Fondazione IRCCS Policlinico San Matteo, Department of Surgery, University of Pavia, 27100, Italy
| | - Gabriele Ceccarelli
- Department of Public Health, Experimental Medicine and Forensic, University of Pavia, Pavia 27100, Italy; CHT Center for Health Technologies, University of Pavia, Pavia 27100, Italy
| | - Silvia Pisani
- Department of Otolaryngology, IRCCS Policlinico S. Matteo, Pavia 27100, Italy
| | - Giovanna Bruni
- Department of Chemistry, Physical-Chemistry Section, University of Pavia, Via Taramelli 16, Pavia 27100, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Pavia 27100, Italy; CHT Center for Health Technologies, University of Pavia, Pavia 27100, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Pavia 27100, Italy; CHT Center for Health Technologies, University of Pavia, Pavia 27100, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Pavia 27100, Italy.
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Tohidi H, Maleki-Jirsaraei N, Simchi A, Mohandes F, Emami Z, Fassina L, Naro F, Conti B, Barbagallo F. An Electroconductive, Thermosensitive, and Injectable Chitosan/Pluronic/Gold-Decorated Cellulose Nanofiber Hydrogel as an Efficient Carrier for Regeneration of Cardiac Tissue. Materials (Basel) 2022; 15:ma15155122. [PMID: 35897556 PMCID: PMC9330822 DOI: 10.3390/ma15155122] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/14/2022] [Accepted: 07/20/2022] [Indexed: 12/10/2022]
Abstract
Myocardial infarction is a major cause of death worldwide and remains a social and healthcare burden. Injectable hydrogels with the ability to locally deliver drugs or cells to the damaged area can revolutionize the treatment of heart diseases. Herein, we formulate a thermo-responsive and injectable hydrogel based on conjugated chitosan/poloxamers for cardiac repair. To tailor the mechanical properties and electrical signal transmission, gold nanoparticles (AuNPs) with an average diameter of 50 nm were physically bonded to oxidized bacterial nanocellulose fibers (OBC) and added to the thermosensitive hydrogel at the ratio of 1% w/v. The prepared hydrogels have a porous structure with open pore channels in the range of 50−200 µm. Shear rate sweep measurements demonstrate a reversible phase transition from sol to gel with increasing temperature and a gelation time of 5 min. The hydrogels show a shear-thinning behavior with a shear modulus ranging from 1 to 12 kPa dependent on gold concentration. Electrical conductivity studies reveal that the conductance of the polymer matrix is 6 × 10−2 S/m at 75 mM Au. In vitro cytocompatibility assays by H9C2 cells show high biocompatibility (cell viability of >90% after 72 h incubation) with good cell adhesion. In conclusion, the developed nanocomposite hydrogel has great potential for use as an injectable biomaterial for cardiac tissue regeneration.
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Affiliation(s)
- Hajar Tohidi
- Department of Physics and Chemistry, Alzahra University, Vanak Village Street, Tehran 19938 93973, Iran;
| | - Nahid Maleki-Jirsaraei
- Department of Physics and Chemistry, Alzahra University, Vanak Village Street, Tehran 19938 93973, Iran;
- Correspondence: (N.M.-J.); (A.S.)
| | - Abdolreza Simchi
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, Tehran 14588 89694, Iran; (F.M.); (Z.E.)
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Azadi Avenue, Tehran 14588 89694, Iran
- Correspondence: (N.M.-J.); (A.S.)
| | - Fatemeh Mohandes
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, Tehran 14588 89694, Iran; (F.M.); (Z.E.)
| | - Zahra Emami
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, Tehran 14588 89694, Iran; (F.M.); (Z.E.)
| | - Lorenzo Fassina
- Department of Electrical, Computer and Biomedical Engineering, University of Pavia, 27100 Pavia, Italy;
| | - Fabio Naro
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University, 00185 Rome, Italy;
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy;
| | - Federica Barbagallo
- Department of Experimental Medicine, Sapienza University, 00185 Rome, Italy; or
- Faculty of Medicine and Surgery, Kore University of Enna, 94100 Enna, Italy
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18
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Pisani S, Chiesa E, Genta I, Dorati R, Gregorini M, Grignano MA, Ramus M, Ceccarelli G, Croce S, Valsecchi C, Monti M, Rampino T, Conti B. Liposome Formulation and In Vitro Testing in Non-Physiological Conditions Addressed to Ex Vivo Kidney Perfusion. Int J Mol Sci 2022; 23:ijms23147999. [PMID: 35887348 PMCID: PMC9324182 DOI: 10.3390/ijms23147999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/15/2022] [Accepted: 07/17/2022] [Indexed: 02/01/2023] Open
Abstract
This work focuses on formulating liposomes to be used in isolated kidney dynamic machine perfusion in hypothermic conditions as drug delivery systems to improve preservation of transplantable organs. The need mainly arises from use of kidneys from marginal donors for transplantation that are more exposed to ischemic/reperfusion injury compared to those from standard donors. Two liposome preparation techniques, thin film hydration and microfluidic techniques, are explored for formulating liposomes loaded with two model proteins, myoglobin and bovine serum albumin. The protein-loaded liposomes are characterized for their size by DLS and morphology by TEM. Protein releases from the liposomes are tested in PERF-GEN perfusion fluid, 4 °C, and compared to the in vitro protein release in PBS, 37 °C. Fluorescent liposome uptake is analyzed by fluorescent microscope in vitro on epithelial tubular renal cell cultures and ex vivo on isolated pig kidney in hypothermic perfusion conditions. The results show that microfluidics are a superior technique for obtaining reproducible spherical liposomes with suitable size below 200 nm. Protein encapsulation efficiency is affected by its molecular weight and isoelectric point. Lowering incubation temperature slows down the proteins release; the perfusion fluid significantly affects the release of proteins sensitive to ionic media (such as BSA). Liposomes are taken up by epithelial tubular renal cells in two hours’ incubation time.
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Affiliation(s)
- Silvia Pisani
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
| | - Marilena Gregorini
- Department of Internal Medicine and Therapeutics, University of Pavia, 27100 Pavia, Italy;
| | - Maria Antonietta Grignano
- Department of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (M.A.G.); (M.R.); (T.R.)
| | - Marina Ramus
- Department of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (M.A.G.); (M.R.); (T.R.)
| | - Gabriele Ceccarelli
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Via Forlanini 2, 27100 Pavia, Italy;
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
- Immunology & Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (C.V.)
| | - Stefania Croce
- Immunology & Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (C.V.)
| | - Chiara Valsecchi
- Immunology & Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (C.V.)
| | - Manuela Monti
- Human Anatomy Unit, Department of Public Health, Experimental and Forensic Medicine, Histology and Embryology Unit University of Pavia, Biotechnology Laboratories Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Teresa Rampino
- Department of Nephrology, Dialysis and Transplantation, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (M.A.G.); (M.R.); (T.R.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Vle Taramelli 12, 27100 Pavia, Italy; (E.C.); (I.G.); (R.D.)
- Correspondence: ; Tel.: +39-0382987378
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Triacca A, Pitzanti G, Mathew E, Conti B, Dorati R, Lamprou DA. Stereolithography 3D printed implants: A preliminary investigation as potential local drug delivery systems to the ear. Int J Pharm 2022; 616:121529. [PMID: 35114311 DOI: 10.1016/j.ijpharm.2022.121529] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 11/24/2022]
Abstract
The current study is a preliminary investigation on the use of stereolithography 3D printing technology in the field of personalized medicines and specifically for delivering drugs locally, which can for example usefully be applied to ear infections. The main aim is the development of drug-loaded implants for the treatment of ear diseases, to improve patient compliance and to overcome the limitations of current delivery approaches. Multiple prototypes of implant geometries have been created and printed using a flexible resin containing 0.5% w/v of Levofloxacin. Physicochemical characterization of the printed implants was carried out using a variety of techniques (e.g., microscopic, spectroscopic, and mechanical analysis). Finally, preliminary in vitro tests were performed to evaluate the release profile of Levofloxacin, the prototype implant's stability, and their antimicrobial property. The results obtained show that there is no interaction between the resin and the drug, which is perfectly solubilized in the device. In addition, the results of the mechanical tests show that the material used resists compression without compromising the design itself, and the diffusion test has shown that the drug diffused through the matrix prototype at 50% over 3 weeks. The selected designs showed higher antimicrobial activity on E. coli than on S. aureus.
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Affiliation(s)
- Alessandro Triacca
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Giulia Pitzanti
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Essyrose Mathew
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Dimitrios A Lamprou
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Pisani S, Genta I, Dorati R, Modena T, Chiesa E, Bruni G, Benazzo M, Conti B. A Design of Experiment (DOE) approach to correlate PLA-PCL electrospun fibers diameter and mechanical properties for soft tissue regeneration purposes. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2021.103060] [Citation(s) in RCA: 3] [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: 12/11/2022]
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21
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Pisani S, Croce S, Mauramati S, Marmonti M, Cobianchi L, Herman I, Dorati R, Avanzini MA, Genta I, Benazzo M, Conti B. Engineered Full Thickness Electrospun Scaffold for Esophageal Tissue Regeneration: From In Vitro to In Vivo Approach. Pharmaceutics 2022; 14:pharmaceutics14020252. [PMID: 35213985 PMCID: PMC8876746 DOI: 10.3390/pharmaceutics14020252] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 02/01/2023] Open
Abstract
Acquired congenital esophageal malformations, such as malignant esophageal cancer, require esophagectomy resulting in full thickness resection, which cannot be left untreated. The proposed approach is a polymeric full-thickness scaffold engineered with mesenchymal stem cells (MSCs) to promote and speed up the regeneration process, ensuring adequate support and esophageal tissue reconstruction and avoiding the use of autologous conduits. Copolymers poly-L-lactide-co-poly-ε-caprolactone (PLA-PCL) 70:30 and 85:15 ratio were chosen to prepare electrospun tubular scaffolds. Electrospinning apparatus equipped with two different types of tubular mandrels: cylindrical (∅ 10 mm) and asymmetrical (∅ 10 mm and ∅ 8 mm) were used. Tubular scaffolds underwent morphological, mechanical (uniaxial tensile stress) and biological (MTT and Dapi staining) characterization. Asymmetric tubular geometry resulted in the best properties and was selected for in vivo surgical implantation. Anesthetized pigs underwent full thickness circumferential resection of the mid-lower thoracic esophagus, followed by implantation of the asymmetric scaffold. Preliminary in vivo results demonstrated that detached stitch suture achieved better results in terms of animal welfare and scaffold integration; thus, it is to be preferred to continuous suture.
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Affiliation(s)
- Silvia Pisani
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
- Correspondence:
| | - Stefania Croce
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Simone Mauramati
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
| | - Marta Marmonti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
| | - Lorenzo Cobianchi
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Irene Herman
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
| | | | - Ida Genta
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
| | - Marco Benazzo
- Otorhinolaryngology Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy; (S.M.); (I.H.); (M.B.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (M.M.); (R.D.); (I.G.); (B.C.)
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Chiesa E, Greco A, Riva F, Dorati R, Conti B, Modena T, Genta I. Hyaluronic Acid-Based Nanoparticles for Protein Delivery: Systematic Examination of Microfluidic Production Conditions. Pharmaceutics 2021; 13:1565. [PMID: 34683858 PMCID: PMC8539066 DOI: 10.3390/pharmaceutics13101565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/09/2021] [Accepted: 09/23/2021] [Indexed: 11/17/2022] Open
Abstract
Hyaluronic acid-based nanoparticles (HA NPs) can be used to deliver a protein cargo to cells overexpressing HA receptors such as CD44 since they combine the low toxicity of the carrier and the retention of the protein integrity with the receptor-mediated internalization. HA properties play a crucial but sometimes unclear role in managing the formation and stability of the meshwork, cell interactions, and ultimately the protein entrapment efficacy. Nowadays, microfluidic is an innovative technology that allows to overcome limits linked to the NPs production, guaranteeing reproducibility and control of individual batches. Taking advantage of this technique, in this research work, the role of HA weight average molecular weight (Mw) in NPs formation inside a microfluidic device has been specifically faced. Based on the relationship between polymer Mw and solution viscosity, a methodological approach has been proposed to ensure critical quality attributes (size of 200 nm, PDI ≤ 0.3) to NPs made by HA with different Mw (280, 540, 710 and 820 kDa). The feasibility of the protein encapsulation was demonstrated by using Myoglobin, as a model neutral protein, with an encapsulation efficiency always higher than 50%. Lastly, all NPs samples were successfully internalized by CD44-expressing cells.
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Affiliation(s)
- Enrica Chiesa
- Department of Surgery, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy
| | - Antonietta Greco
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (A.G.); (R.D.); (B.C.); (T.M.)
| | - Federica Riva
- Department of Public Health, Experimental and Forensic Medicine, Histology and Embryology Unit, University of Pavia, 27100 Pavia, Italy;
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (A.G.); (R.D.); (B.C.); (T.M.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (A.G.); (R.D.); (B.C.); (T.M.)
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (A.G.); (R.D.); (B.C.); (T.M.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (A.G.); (R.D.); (B.C.); (T.M.)
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Bonferoni MC, Caramella C, Catenacci L, Conti B, Dorati R, Ferrari F, Genta I, Modena T, Perteghella S, Rossi S, Sandri G, Sorrenti M, Torre ML, Tripodo G. Biomaterials for Soft Tissue Repair and Regeneration: A Focus on Italian Research in the Field. Pharmaceutics 2021; 13:pharmaceutics13091341. [PMID: 34575417 PMCID: PMC8471088 DOI: 10.3390/pharmaceutics13091341] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 06/24/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 12/22/2022] Open
Abstract
Tissue repair and regeneration is an interdisciplinary field focusing on developing bioactive substitutes aimed at restoring pristine functions of damaged, diseased tissues. Biomaterials, intended as those materials compatible with living tissues after in vivo administration, play a pivotal role in this area and they have been successfully studied and developed for several years. Namely, the researches focus on improving bio-inert biomaterials that well integrate in living tissues with no or minimal tissue response, or bioactive materials that influence biological response, stimulating new tissue re-growth. This review aims to gather and introduce, in the context of Italian scientific community, cutting-edge advancements in biomaterial science applied to tissue repair and regeneration. After introducing tissue repair and regeneration, the review focuses on biodegradable and biocompatible biomaterials such as collagen, polysaccharides, silk proteins, polyesters and their derivatives, characterized by the most promising outputs in biomedical science. Attention is pointed out also to those biomaterials exerting peculiar activities, e.g., antibacterial. The regulatory frame applied to pre-clinical and early clinical studies is also outlined by distinguishing between Advanced Therapy Medicinal Products and Medical Devices.
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Affiliation(s)
| | | | | | - Bice Conti
- Correspondence: (M.C.B.); (B.C.); (F.F.)
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Dorati R, Chiesa E, Riva F, Modena T, Marconi S, Auricchio F, Genta I, Conti B. Design and optimization of 3D-bioprinted scaffold framework based on a new natural polymeric bioink. J Pharm Pharmacol 2021; 74:57-66. [PMID: 34402908 DOI: 10.1093/jpp/rgab116] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 07/19/2021] [Indexed: 11/13/2022]
Abstract
OBJECTIVES This aimed at the design and production of engineered 3D scaffold prototypes using a natural polymeric bioink made of chitosan and poly-γ-glutamic acid with a specific focus on 3D-bioprinting process and on 3D framework geometry. METHODS Prototypes were produced using a 3D bioprinter exploiting layer-by-layer deposition technology. The 3D scaffold prototypes were fully characterized concerning pore size and size distribution, stability in different experimental conditions, swelling capability, and human dermal fibroblasts viability. KEY FINDINGS Hexagonal framework combined with biopaper allowed stabilizing the 3-layers structure during process manufacturing and during incubation in cell culture conditions. The stability of 3-layers structure was well preserved for 48 h. Crosslinking percentages of 2-layers and 3-layers prototype were 88.2 and 68.39, respectively. The swelling study showed a controlled swelling capability for 2-layers and 3-layers prototype, ∼5%. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay results showed good biocompatibility of 3-layers prototype and their suitability for preserving 48 h cell viability in 3D cultures. Moreover, a significant increment of absorbance value was measured after 48 h, demonstrating cell growth. CONCLUSIONS Bioink obtained combining chitosan and poly-γ-glutamic acid represents a good option for 3D bioprinting. A stable 3D structure was realized by layer-by-layer deposition technology; compared with other papers, the present study succeeded in using medical healthcare-grade polymers, no-toxic crosslinker, and solvents according to ICH Topic Q3C (R4).
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Affiliation(s)
- Rossella Dorati
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy
| | - Enrica Chiesa
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 5, 27100 Pavia, Italy
| | - Federica Riva
- Department of Public Health, Experimental and Forensic Medicine, Histology and Embryology Unit, University of Pavia, via Forlanini, 10, 27100 Pavia, Italy
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy
| | - Stefania Marconi
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 5, 27100 Pavia, Italy
| | - Ferdinando Auricchio
- Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 5, 27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy
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Greco A, Garoffolo G, Chiesa E, Riva F, Dorati R, Modena T, Conti B, Pesce M, Genta I. Nanotechnology, a booster for the multitarget drug verteporfin. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102562] [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]
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Ballacchino G, Weaver E, Mathew E, Dorati R, Genta I, Conti B, Lamprou DA. Manufacturing of 3D-Printed Microfluidic Devices for the Synthesis of Drug-Loaded Liposomal Formulations. Int J Mol Sci 2021; 22:ijms22158064. [PMID: 34360832 PMCID: PMC8348465 DOI: 10.3390/ijms22158064] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [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: 06/23/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
Microfluidic technique has emerged as a promising tool for the production of stable and monodispersed nanoparticles (NPs). In particular, this work focuses on liposome production by microfluidics and on factors involved in determining liposome characteristics. Traditional fabrication techniques for microfluidic devices suffer from several disadvantages, such as multistep processing and expensive facilities. Three-dimensional printing (3DP) has been revolutionary for microfluidic device production, boasting facile and low-cost fabrication. In this study, microfluidic devices with innovative micromixing patterns were developed using fused deposition modelling (FDM) and liquid crystal display (LCD) printers. To date, this work is the first to study liposome production using LCD-printed microfluidic devices. The current study deals with 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) liposomes with cholesterol (2:1) prepared using commercial and 3D-printed microfluidic devices. We evaluated the effect of microfluidic parameters, chip manufacturing, material, and channel design on liposomal formulation by analysing the size, PDI, and ζ-potential. Curcumin exhibits potent anticancer activity and it has been reported that curcumin-loaded liposomes formulated by microfluidics show enhanced encapsulation efficiency when compared with other reported systems. In this work, curcumal liposomes were produced using the developed microfluidic devices and particle sizing, ζ-potential, encapsulation efficiency, and in vitro release studies were performed at 37 °C.
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Affiliation(s)
- Giulia Ballacchino
- School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK; (G.B.); (E.W.); (E.M.)
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (R.D.); (I.G.)
| | - Edward Weaver
- School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK; (G.B.); (E.W.); (E.M.)
| | - Essyrose Mathew
- School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK; (G.B.); (E.W.); (E.M.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (R.D.); (I.G.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (R.D.); (I.G.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (R.D.); (I.G.)
- Correspondence: (B.C.); (D.A.L.); Tel.: +39-0382-987378 (B.C.); +44-(0)28-9097-2617 (D.A.L.)
| | - Dimitrios A. Lamprou
- School of Pharmacy, Queen’s University Belfast, Belfast BT9 7BL, UK; (G.B.); (E.W.); (E.M.)
- Correspondence: (B.C.); (D.A.L.); Tel.: +39-0382-987378 (B.C.); +44-(0)28-9097-2617 (D.A.L.)
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Dorati R, Chiesa E, Rosalia M, Pisani S, Genta I, Bruni G, Modena T, Conti B. Tubular Electrospun Vancomycin-Loaded Vascular Grafts: Formulation Study and Physicochemical Characterization. Polymers (Basel) 2021; 13:polym13132073. [PMID: 34202454 PMCID: PMC8272178 DOI: 10.3390/polym13132073] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 02/06/2023] Open
Abstract
This work aimed at formulating tubular grafts electrospun with a size < 6 mm and incorporating vancomycin as an antimicrobial agent. Compared to other papers, the present study succeeded in using medical healthcare-grade polymers and solvents permitted by ICH Topic Q3C (R4). Vancomycin (VMC) was incorporated into polyester synthetic polymers (poly-L-lactide-co-poly-ε-caprolactone and poly lactide-co-glycolide) using permitted solvents; moreover, a surfactant was added to the formulation in order to avoid the precipitation of VMC on fiber surface. A preliminary preformulation study was carried out to evaluate solubility of VMC in different aqueous and organic solvents and its stability. To reduce size of fibers and their orientation, we studied a solvent system based on methylene chloride and acetone (DCM/acetone), at different ratios (80:20, 70:30, and 60:40). Considering conductivity of solutions and their spinnability, solvent system at a 80:20 ratio was selected for the study. SEM images demonstrated that size of fibers, their distribution, and their orientation were affected by the incorporation of VMC and surfactant into polymer solution. Surfactant allowed for the reduction of precipitates of VMC on fiber surface, which are responsible of the high burst release in the first six hours; the release was mainly dependent on graft structure porosity, number of pores, and graft absorbent capability. A controlled release of VMC was achieved, covering a period from 96 to 168 h as a function of composition and structure; the concentration of VMC was significantly beyond VMC minimum inhibitory concentration (MIC, 2 ug/mL). These results indicated that the VMC tubular electrospun grafts not only controlled the local release of VMC, but also avoided onset of antibiotic resistance.
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Affiliation(s)
- Rossella Dorati
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
- Correspondence: ; Tel.: +39-0382-987393
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Mariella Rosalia
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Silvia Pisani
- Immunology and Transplantation Laboratory, Pediatric Hematology Oncology Unit, Department of Maternal and Children’s Health, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy;
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Giovanna Bruni
- Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy;
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; (E.C.); (M.R.); (I.G.); (T.M.); (B.C.)
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Pisani S, Dorati R, Genta I, Benazzo M, Conti B, Prina Mello A. A study focused on macrophages modulation induced by the Polymeric Electrospun Matrices (EL-Ms) for application in tissue regeneration: In vitro proof of concept. Int J Pharm 2021; 603:120712. [PMID: 34015377 DOI: 10.1016/j.ijpharm.2021.120712] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 03/23/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/11/2022]
Abstract
A successful regenerative process has to consider the role of immune system after surgical implantation of a polymer-based matrix due to the reaction of monocytes and macrophages cells after contact with biomaterial. Pro-inflammatory (TNF-alfa, IL-6 and IL-8) and anti-inflammatory (IL-10) cytokines released by macrophages cells are fundamental in acute inflammatory response (2-3 days) to destroy pathogens and help scaffold during regenerative process supporting the up-regulation of ECM and endothelial progenitor cells. Aim of this work was to evaluate the in vitro acute response induced by pre-optimized polymeric electrospun matrices (EL-Ms), after 3 days contact with macrophages (M0) and EL-Ms ability to modulate M1 and/or M2 macrophages polarization. Biological characterization included MTT, LDH and Live/Dead assays, immunological characterization by ELISA for cytokine-expression levels determination. Morphological characterization was carried out by Confocal Laser Scanning Microscopy and Scanning Electron Microscopy. The results showed an initial pro-inflammatory response (after 24 h) characterized by release of TNF-alfa, IL-6 and IL-8 cytokines. A preferential anti-inflammatory response was highlighted after 72 h, demonstrated by higher release of IL-10 and elongation of macrophages in contact with EL-Ms, that is typical of M2 cell polarization. EL-Ms could be used as eligible support to enhance tissue regeneration promoting an anti-inflammatory response.
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Affiliation(s)
- Silvia Pisani
- Immunology and Transplantation Laboratory, Fondazione IRCCS Policlinico S. Matteo, Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Italy; Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Italy; Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy
| | - Marco Benazzo
- Department of Surgery, Otolaryngologist Section, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Italy; Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
| | - Adriele Prina Mello
- LBCAM, Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin 8, Ireland; Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2, Ireland.
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Dorati R, Pisani S, Chiesa E, Genta I, Bruni G, Modena T, Conti B. Electrospun tubular vascular grafts to replace damaged peripheral arteries: A preliminary formulation study. Int J Pharm 2021; 596:120198. [PMID: 33540017 DOI: 10.1016/j.ijpharm.2021.120198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/12/2022]
Abstract
Polymeric tubular vascular grafts represent a likely alternative to autologous vascular grafts for treating peripheral artery occlusive disease. This preliminary research study applied cutting-edge electrospinning technique for manufacturing prototypes with diameter ≤ 6 mm and based on biocompatible and biodegradable polymers such as polylactide-polycaprolactone, polylactide-co-glycolide and polyhydroxyethylmethacrylate combined in different design approaches (layering and blending). Samples were characterized about fiber morphology, diameter, size distribution, porosity, fluid uptake capability, and mechanical properties. Biocompatibility and cell interaction were evaluated by in vitro test. Goal of this preliminary study was to discriminate among the prototypes and select which composition and design approach could better suit tissue regeneration purposes. Results showed that electrospinning technique is suitable to obtain grafts with a diameter < 6 mm and thickness between 140 ± 7-175 ± 4 μm. Scanning electron microscopy analysis showed fibers with suitable micrometric diameters and pore size between 5 and 35 μm. polyhydroxyethylmethacrylate provided high hydrophilicity (≃ 100°) and optimal cell short term proliferation (cell viability ≃ 160%) in accordance with maximum fluid uptake ability (300-350%). Moreover, addition of polyhydroxyethylmethacrylate lowered suture retention strength at value < 1 N. Prototypes obtaining combining polylactide-co-glycolide and polylactide-coglycolide/ polyhydroxyethylmethacrylate with polylactide-polycaprolactone in a bilayered structure showed optimal mechanical behavior resembling native bovine vessel.
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Affiliation(s)
- Rossella Dorati
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
| | - Silvia Pisani
- Immunology and Transplantation Laboratory, Pediatric Hematology Oncology Unit, Department of Maternal and Children's Health, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
| | - Giovanna Bruni
- Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., Parco Tecnico Scientifico (PTS), Via Taramelli 20, 27100 Pavia, Italy
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Bavaro T, Tengattini S, Rezwan R, Chiesa E, Temporini C, Dorati R, Massolini G, Conti B, Ubiali D, Terreni M. Design of epidermal growth factor immobilization on 3D biocompatible scaffolds to promote tissue repair and regeneration. Sci Rep 2021; 11:2629. [PMID: 33514813 PMCID: PMC7846569 DOI: 10.1038/s41598-021-81905-1] [Citation(s) in RCA: 10] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/13/2021] [Indexed: 01/05/2023] Open
Abstract
Exogenous application of human epidermal growth factor (hEGF) stimulates epidermal wound healing. The aim of this study was to develop bioconjugates based on hEGF mimicking the protein in its native state and thus suitable for tissue engineering applications, in particular for treating skin-related disorders as burns. Ribonuclease A (RNase A) was used to investigate a number of different activated-agarose carriers: cyanogen bromide (CNBr)-activated-agarose and glyoxyl-agarose showed to preserve the appropriate orientation of the protein for receptor binding. EGF was immobilized on these carriers and immobilization yield was evaluated (100% and 12%, respectively). A peptide mapping of unbound protein regions was carried out by LC-MS to take evidence of the residues involved in the immobilization and, consequently, the flexibility and surface accessibility of immobilized EGF. To assess cell proliferative activities, 10, 25, 50, and 100 ng/mL of each immobilized EGF sample were seeded on fibroblast cells and incubated for 24, 48 and 72 h. The immobilized growth factor showed significantly high cell proliferative activity at 50 and 100 ng/mL compared to control and soluble EGF. Although both of the immobilized samples show dose-dependency when seeded with high number of fibroblast cells, CNBr-agarose-EGF showed a significantly high activity at 100 ng/mL and 72 h incubation, compared to glyoxyl-agarose-EGF.
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Affiliation(s)
- Teodora Bavaro
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy.
| | - Sara Tengattini
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Refaya Rezwan
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
- Department of Pharmacy, ASA University Bangladesh, 23/3 Bir Uttam A.N.M Nuruzzaman Sarak, Dhaka, 1207, Bangladesh
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Caterina Temporini
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Gabriella Massolini
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Daniela Ubiali
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Marco Terreni
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
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Chiesa E, Dorati R, Pisani S, Bruni G, Rizzi LG, Conti B, Modena T, Genta I. Graphene Nanoplatelets for the Development of Reinforced PLA-PCL Electrospun Fibers as the Next-Generation of Biomedical Mats. Polymers (Basel) 2020; 12:polym12061390. [PMID: 32575840 PMCID: PMC7362196 DOI: 10.3390/polym12061390] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 12/24/2022] Open
Abstract
Electrospun scaffolds made of nano- and micro-fibrous non-woven mats from biodegradable polymers have been intensely investigated in recent years. In this field, polymer-based materials are broadly used for biomedical applications since they can be managed in high scale, easily shaped, and chemically changed to tailor their specific biologic properties. Nonetheless polymeric materials can be reinforced with inorganic materials to produce a next-generation composite with improved properties. Herein, the role of graphene nanoplatelets (GNPs) on electrospun poly-l-lactide-co-poly-ε-caprolactone (PLA-PCL, 70:30 molar ratio) fibers was investigated. Microfibers of neat PLA-PCL and with different amounts of GNPs were produced by electrospinning and they were characterized for their physicochemical and biologic properties. Results showed that GNPs concentration notably affected the fibers morphology and diameters distribution, influenced PLA-PCL chain mobility in the crystallization process and tuned the mechanical and thermal properties of the electrospun matrices. GNPs were also liable of slowing down copolymer degradation rate in simulated physiological environment. However, no toxic impurities and degradation products were pointed out up to 60 d incubation. Furthermore, preliminary biologic tests proved the ability of the matrices to enhance fibroblast cells attachment and proliferation probably due to their unique 3D-interconnected structure.
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Affiliation(s)
- Enrica Chiesa
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
| | - Silvia Pisani
- Immunology and Transplantation Laboratory, Pedriatric Hematology Oncology Unit, Department of Maternal and Children’s Health, Fondazione IRCCS Policlinico S. Matteo—27100 Pavia, Italy;
| | - Giovanna Bruni
- Department of Chemistry, Physical Chemistry Section, University of Pavia, Via Taramelli 12/14, 27100 Pavia, PV, Italy;
| | - Laura G. Rizzi
- Directa Plus S.p.a., COMO NexT, Via Cavour, 2—22074 Lomazzo (CO), Italy;
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12—27100 Pavia, Italy; (E.C.); (R.D.); (B.C.); (T.M.)
- Polymerix srl, V.le Taramelli 24—27100 Pavia, Italy
- Correspondence: ; Tel.: +39-0382987371
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Mariotti CE, Ramos‐Rivera L, Conti B, Boccaccini AR. Zein‐Based Electrospun Fibers Containing Bioactive Glass with Antibacterial Capabilities. Macromol Biosci 2020; 20:e2000059. [DOI: 10.1002/mabi.202000059] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/26/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Camilla E. Mariotti
- Department of Drug SciencesPharmaceutical and Technology Law Laboratory (PTL)University of Pavia Viale Taramelli 12 Pavia 27100 Italy
- Institute of BiomaterialsDepartment of Materials Science and EngineeringUniversity of Erlangen‐Nuremberg Cauerstrasse 6 Erlangen 91058 Germany
| | - Laura Ramos‐Rivera
- Institute of BiomaterialsDepartment of Materials Science and EngineeringUniversity of Erlangen‐Nuremberg Cauerstrasse 6 Erlangen 91058 Germany
| | - Bice Conti
- Department of Drug SciencesPharmaceutical and Technology Law Laboratory (PTL)University of Pavia Viale Taramelli 12 Pavia 27100 Italy
| | - Aldo R. Boccaccini
- Institute of BiomaterialsDepartment of Materials Science and EngineeringUniversity of Erlangen‐Nuremberg Cauerstrasse 6 Erlangen 91058 Germany
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Pisani S, Dorati R, Genta I, Chiesa E, Modena T, Conti B. High Efficiency Vibrational Technology (HEVT) for Cell Encapsulation in Polymeric Microcapsules. Pharmaceutics 2020; 12:pharmaceutics12050469. [PMID: 32455714 PMCID: PMC7284989 DOI: 10.3390/pharmaceutics12050469] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/15/2020] [Accepted: 05/16/2020] [Indexed: 11/16/2022] Open
Abstract
Poly(methyl-methacrylate) (PMMA) is a biocompatible and non-biodegradable polymer widely used as biomedical material. PMMA microcapsules with suitable dimension and porosity range are proposed to encapsulate live cells useful for tissue regeneration purposes. The aim of this work was to evaluate the feasibility of producing cell-loaded PMMA microcapsules through "high efficiency vibrational technology" (HEVT). Preliminary studies were conducted to set up the process parameters for PMMA microcapsules production and human dermal fibroblast, used as cell model, were encapsulated in shell/core microcapsules. Microcapsules morphometric analysis through optical microscope and scanning electron microscopy highlighted that uniform microcapsules of 1.2 mm with circular surface pores were obtained by HEVT. Best process conditions used were as follows: frequency of 200 Hz, voltage of 750 V, flow rate of core solution of 10 mL/min, and flow rate of shell solution of 0.5 bar. Microcapsule membrane allowed permeation of molecules with low and medium molecular weight up to 5900 Da and prevented diffusion of high molecular weight molecules (11,000 Da). The yield of the process was about 50% and cell encapsulation efficiency was 27% on total amount. The cell survived and growth up to 72 h incubation in simulated physiologic medium was observed.
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Affiliation(s)
- Silvia Pisani
- Immunology and Transplantation Laboratory, Pediatric Hematology Oncology Unit, Department of Maternal and Children’s Health, Fondazione IRCCS Policlinico S. Matteo, 27100 Pavia, Italy;
| | - Rossella Dorati
- Department of Drug Science, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (I.G.); (E.C.); (T.M.); (B.C.)
- Correspondence:
| | - Ida Genta
- Department of Drug Science, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (I.G.); (E.C.); (T.M.); (B.C.)
| | - Enrica Chiesa
- Department of Drug Science, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (I.G.); (E.C.); (T.M.); (B.C.)
| | - Tiziana Modena
- Department of Drug Science, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (I.G.); (E.C.); (T.M.); (B.C.)
| | - Bice Conti
- Department of Drug Science, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; (I.G.); (E.C.); (T.M.); (B.C.)
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Pisani S, Genta I, Dorati R, Kavatzikidou P, Angelaki D, Manousaki A, Karali K, Ranella A, Stratakis E, Conti B. Biocompatible polymeric electrospun matrices: Micro–nanotopography effect on cell behavior. J Appl Polym Sci 2020. [DOI: 10.1002/app.49223] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Silvia Pisani
- Department of Drug SciencesUniversity of Pavia Pavia Italy
| | - Ida Genta
- Department of Drug SciencesUniversity of Pavia Pavia Italy
| | - Rossella Dorati
- Department of Drug SciencesUniversity of Pavia Pavia Italy
- Polymerix s.r.l., Parco Tecnico Scientifico, Via Taramelli 20 Pavia Italy
| | - Paraskevi Kavatzikidou
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Despoina Angelaki
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Aleka Manousaki
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Kanelina Karali
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
- Department of PhysicsUniversity of Crete Heraklion, Crete Greece
| | - Anthi Ranella
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
| | - Emmanuel Stratakis
- Institute of Electronic Structure and LaserFoundation for Research and Technology ‐ Hellas Heraklion, Crete Greece
- Department of PhysicsUniversity of Crete Heraklion, Crete Greece
| | - Bice Conti
- Department of Drug SciencesUniversity of Pavia Pavia Italy
- Polymerix s.r.l., Parco Tecnico Scientifico, Via Taramelli 20 Pavia Italy
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Pisani P, Airoldi M, Allais A, Aluffi Valletti P, Battista M, Benazzo M, Briatore R, Cacciola S, Cocuzza S, Colombo A, Conti B, Costanzo A, della Vecchia L, Denaro N, Fantozzi C, Galizia D, Garzaro M, Genta I, Iasi GA, Krengli M, Landolfo V, Lanza GV, Magnano M, Mancuso M, Maroldi R, Masini L, Merlano MC, Piemonte M, Pisani S, Prina-Mello A, Prioglio L, Rugiu MG, Scasso F, Serra A, Valente G, Zannetti M, Zigliani A. Metastatic disease in head & neck oncology. Acta Otorhinolaryngol Ital 2020; 40:S1-S86. [PMID: 32469009 PMCID: PMC7263073 DOI: 10.14639/0392-100x-suppl.1-40-2020] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The head and neck district represents one of the most frequent sites of cancer, and the percentage of metastases is very high in both loco-regional and distant areas. Prognosis refers to several factors: a) stage of disease; b) loco-regional relapses; c) distant metastasis. At diagnosis, distant metastases of head and neck cancers are present in about 10% of cases with an additional 20-30% developing metastases during the course of their disease. Diagnosis of distant metastases is associated with unfavorable prognosis, with a median survival of about 10 months. The aim of the present review is to provide an update on distant metastasis in head and neck oncology. Recent achievements in molecular profiling, interaction between neoplastic tissue and the tumor microenvironment, oligometastatic disease concepts, and the role of immunotherapy have all deeply changed the therapeutic approach and disease control. Firstly, we approach topics such as natural history, epidemiology of distant metastases and relevant pathological and radiological aspects. Focus is then placed on the most relevant clinical aspects; particular attention is reserved to tumours with distant metastasis and positive for EBV and HPV, and the oligometastatic concept. A substantial part of the review is dedicated to different therapeutic approaches. We highlight the role of immunotherapy and the potential effects of innovative technologies. Lastly, we present ethical and clinical perspectives related to frailty in oncological patients and emerging difficulties in sustainable socio-economical governance.
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Affiliation(s)
- Paolo Pisani
- ENT Unit, ASL AT, “Cardinal Massaja” Hospital, Asti, Italy
| | - Mario Airoldi
- Medical Oncology, Città della Salute e della Scienza, Torino, Italy
| | | | - Paolo Aluffi Valletti
- SCDU Otorinolaringoiatria, AOU Maggiore della Carità di Novara, Università del Piemonte Orientale, Italy
| | | | - Marco Benazzo
- SC Otorinolaringoiatria, Fondazione IRCCS Policlinico “S. Matteo”, Università di Pavia, Italy
| | | | | | - Salvatore Cocuzza
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, University of Catania, Italy
| | - Andrea Colombo
- ENT Unit, ASL AT, “Cardinal Massaja” Hospital, Asti, Italy
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Italy
- Polymerix S.r.L., Pavia, Italy
| | | | - Laura della Vecchia
- Unit of Otorhinolaryngology General Hospital “Macchi”, ASST dei Settelaghi, Varese, Italy
| | - Nerina Denaro
- Oncology Department A.O.S. Croce & Carle, Cuneo, Italy
| | | | - Danilo Galizia
- Medical Oncology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo,Italy
| | - Massimiliano Garzaro
- SCDU Otorinolaringoiatria, AOU Maggiore della Carità di Novara, Università del Piemonte Orientale, Italy
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Italy
- Polymerix S.r.L., Pavia, Italy
| | | | - Marco Krengli
- Dipartimento Medico Specialistico ed Oncologico, SC Radioterapia Oncologica, AOU Maggiore della Carità, Novara, Italy
- Dipartimento di Medicina Traslazionale, Università del Piemonte Orientale, Novara, Italy
| | | | - Giovanni Vittorio Lanza
- S.O.C. Chirurgia Toracica, Azienda Ospedaliera Nazionale “SS. Antonio e Biagio e Cesare Arrigo”, Alessandria, Italy
| | | | - Maurizio Mancuso
- S.O.C. Chirurgia Toracica, Azienda Ospedaliera Nazionale “SS. Antonio e Biagio e Cesare Arrigo”, Alessandria, Italy
| | - Roberto Maroldi
- Department of Radiology, University of Brescia, ASST Spedali Civili Brescia, Italy
| | - Laura Masini
- Dipartimento Medico Specialistico ed Oncologico, SC Radioterapia Oncologica, AOU Maggiore della Carità, Novara, Italy
| | - Marco Carlo Merlano
- Oncology Department A.O.S. Croce & Carle, Cuneo, Italy
- Medical Oncology, Candiolo Cancer Institute, FPO-IRCCS, Candiolo,Italy
| | - Marco Piemonte
- ENT Unit, University Hospital “Santa Maria della Misericordia”, Udine, Italy
| | - Silvia Pisani
- Immunology and Transplantation Laboratory Fondazione IRCCS Policlinico “S. Matteo”, Pavia, Italy
| | - Adriele Prina-Mello
- LBCAM, Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin 8, Ireland
- Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2, Ireland
| | - Luca Prioglio
- Department of Otorhinolaryngology, ASL 3 “Genovese”, “Padre Antero Micone” Hospital, Genoa, Italy
| | | | - Felice Scasso
- Department of Otorhinolaryngology, ASL 3 “Genovese”, “Padre Antero Micone” Hospital, Genoa, Italy
| | - Agostino Serra
- University of Catania, Italy
- G.B. Morgagni Foundation, Catania, Italy
| | - Guido Valente
- Dipartimento di Medicina Traslazionale, Università del Piemonte Orientale, Novara, Italy
| | - Micol Zannetti
- Dipartimento di Medicina Traslazionale, Università del Piemonte Orientale, Novara, Italy
| | - Angelo Zigliani
- Department of Radiology, University of Brescia, ASST Spedali Civili Brescia, Italy
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Pisani S, Dorati R, Scocozza F, Mariotti C, Chiesa E, Bruni G, Genta I, Auricchio F, Conti M, Conti B. Preliminary investigation on a new natural based poly(gamma-glutamic acid)/Chitosan bioink. J Biomed Mater Res B Appl Biomater 2020; 108:2718-2732. [PMID: 32159925 DOI: 10.1002/jbm.b.34602] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/03/2020] [Accepted: 03/01/2020] [Indexed: 12/14/2022]
Abstract
The study aims to investigate a novel bioink made from Chitosan (Cs)/ poly(gamma-glutamic acid) (Gamma-PGA) hydrogel that takes advantage of the two biodegradable and biocompatible polymers meeting most of the requirements for biomedical applications. The bioink could be an alternative to other materials commonly used in 3D-bioprinting such as gelatin or alginate. Cs/ Gamma-PGA hydrogel was prepared by double extrusion of Gamma-PGA and Cs solutions, where 2 × 105 human adult fibroblasts per ml Cs solution had been loaded, through Cellink 3D-Bioprinter at 37°C. A computer aided design model was used to get 3D-bioprinting of a four layers grid hydrogel construct with 70% infill. Hydrogel characterization involved rheology, FTIR analysis, stability study (mass loss [ML], fluid uptake [FU]), and cell retaining ability into hydrogel. 3D-bioprinted hydrogel gelation time resulted to be <60 s, hydrogel structure was maintained up to 36.79 Pa shear stress, FTIR analysis demonstrated Gamma-PGA/Cs interpolyelectrolyte complex formation. The 3D-bioprinted hydrogel was stable for 35 days (35% ML) in cell culture medium, with increasing FU. Cell loaded 3D-bioprinted Cs 6% hydrogel was able to retain 70% of cells which survived to printing process and cell viability was maintained during 14 days incubation.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Science, University of Pavia, Pavia, Italy
| | - Rossella Dorati
- Department of Drug Science, University of Pavia, Pavia, Italy
| | - Franca Scocozza
- Department of Civil Engineering, University of Pavia, Pavia, Italy
| | | | - Enrica Chiesa
- Department of Drug Science, University of Pavia, Pavia, Italy
| | - Giovanna Bruni
- Department of Chemistry, University of Pavia, Pavia, Italy
| | - Ida Genta
- Department of Drug Science, University of Pavia, Pavia, Italy
| | | | - Michele Conti
- Department of Civil Engineering, University of Pavia, Pavia, Italy
| | - Bice Conti
- Department of Drug Science, University of Pavia, Pavia, Italy
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Pisani S, Croce S, Chiesa E, Dorati R, Lenta E, Genta I, Bruni G, Mauramati S, Benazzo A, Cobianchi L, Morbini P, Caliogna L, Benazzo M, Avanzini MA, Conti B. Tissue Engineered Esophageal Patch by Mesenchymal Stromal Cells: Optimization of Electrospun Patch Engineering. Int J Mol Sci 2020; 21:ijms21051764. [PMID: 32143536 PMCID: PMC7084816 DOI: 10.3390/ijms21051764] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/28/2020] [Accepted: 03/02/2020] [Indexed: 12/16/2022] Open
Abstract
Aim of work was to locate a simple, reproducible protocol for uniform seeding and optimal cellularization of biodegradable patch minimizing the risk of structural damages of patch and its contamination in long-term culture. Two seeding procedures are exploited, namely static seeding procedures on biodegradable and biocompatible patches incubated as free floating (floating conditions) or supported by CellCrownTM insert (fixed conditions) and engineered by porcine bone marrow MSCs (p-MSCs). Scaffold prototypes having specific structural features with regard to pore size, pore orientation, porosity, and pore distribution were produced using two different techniques, such as temperature-induced precipitation method and electrospinning technology. The investigation on different prototypes allowed achieving several implementations in terms of cell distribution uniformity, seeding efficiency, and cellularization timing. The cell seeding protocol in stating conditions demonstrated to be the most suitable method, as these conditions successfully improved the cellularization of polymeric patches. Furthermore, the investigation provided interesting information on patches’ stability in physiological simulating experimental conditions. Considering the in vitro results, it can be stated that the in vitro protocol proposed for patches cellularization is suitable to achieve homogeneous and complete cellularizations of patch. Moreover, the protocol turned out to be simple, repeatable, and reproducible.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
| | - Stefania Croce
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, University of Pavia, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
- Correspondence:
| | - Elisa Lenta
- Department of Paediatric Oncoaematology, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (E.L.); (M.A.A.)
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
| | - Giovanna Bruni
- Department of Chemistry, University of Pavia, 27100 Pavia, Italy;
| | - Simone Mauramati
- Department of Surgery, Otolaryngologist section, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.M.); (M.B.)
| | - Alberto Benazzo
- Department of Surgery, Medical University of Vienna, 1090 Vienna, Austria;
| | - Lorenzo Cobianchi
- Department of Clinical, Surgical, Diagnostic & Pediatric Sciences, University of Pavia, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.C.); (L.C.)
| | - Patrizia Morbini
- Department of Diagnostic Medicine, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy;
| | - Laura Caliogna
- Orthopaedic and Traumatology, IRCCS Policlinico San Matteo, 27100 Pavia, Italy;
| | - Marco Benazzo
- Department of Surgery, Otolaryngologist section, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (S.M.); (M.B.)
| | - Maria Antonietta Avanzini
- Department of Paediatric Oncoaematology, IRCCS Policlinico S. Matteo, 27100 Pavia, Italy; (E.L.); (M.A.A.)
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, 27100 Pavia, Italy; (S.P.); (E.C.); (I.G.); (B.C.)
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Delama A, Teixeira MI, Dorati R, Genta I, Conti B, Lamprou DA. Microfluidic encapsulation method to produce stable liposomes containing iohexol. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101340] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Pisani S, Dorati R, Chiesa E, Genta I, Modena T, Bruni G, Grisoli P, Conti B. Release Profile of Gentamicin Sulfate from Polylactide- co-Polycaprolactone Electrospun Nanofiber Matrices. Pharmaceutics 2019; 11:E161. [PMID: 30987212 PMCID: PMC6523179 DOI: 10.3390/pharmaceutics11040161] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 03/28/2019] [Accepted: 03/30/2019] [Indexed: 11/30/2022] Open
Abstract
The advent and growth of resistance phenomena to antibiotics has reached critical levels, invalidating the action of a majority of antibiotic drugs currently used in the clinical field. Several innovative techniques, such as the nanotechnology, can be applied for creating innovative drug delivery systems designed to modify drug release itself and/or drug administration route; moreover, they have proved suitable for overcoming the phenomenon of antibiotic resistance. Electrospun nanofibers, due to their useful structural properties, are showing promising results as antibiotic release devices for preventing bacteria biofilm formation after surgical operation and for limiting resistance phenomena. In this work gentamicin sulfate (GS) was loaded into polylactide-co-polycaprolactone (PLA-PCL) electrospun nanofibers; quantification and in vitro drug release profiles in static and dynamic conditions were investigated; GS kinetic release from nanofibers was studied using mathematical models. A preliminary microbiological test was carried out towards Staphylococcus aureus and Escherichia coli bacteria.
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Affiliation(s)
- Silvia Pisani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
- Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
- Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
| | - Giovanna Bruni
- Department of Chemistry, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Pietro Grisoli
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12/14, 27100 Pavia, Italy.
- Polymerix S.r.l., Via Taramelli 24, 27100 Pavia, Italy.
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Chiesa E, Dorati R, Pisani S, Conti B, Bergamini G, Modena T, Genta I. The Microfluidic Technique and the Manufacturing of Polysaccharide Nanoparticles. Pharmaceutics 2018; 10:pharmaceutics10040267. [PMID: 30544868 PMCID: PMC6321127 DOI: 10.3390/pharmaceutics10040267] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [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: 10/15/2018] [Revised: 11/16/2018] [Accepted: 11/27/2018] [Indexed: 12/22/2022] Open
Abstract
The microfluidic technique has emerged as a promising tool to accelerate the clinical translation of nanoparticles, and its application affects several aspects, such as the production of nanoparticles and the in vitro characterization in the microenvironment, mimicking in vivo conditions. This review covers the general aspects of the microfluidic technique and its application in several fields, such as the synthesis, recovering, and samples analysis of nanoparticles, and in vitro characterization and their in vivo application. Among these, advantages in the production of polymeric nanoparticles in a well-controlled, reproducible, and high-throughput manner have been highlighted, and detailed descriptions of microfluidic devices broadly used for the synthesis of polysaccharide nanoparticles have been provided. These nanoparticulate systems have drawn attention as drug delivery vehicles over many years; nevertheless, their synthesis using the microfluidic technique is still largely unexplored. This review deals with the use of the microfluidic technique for the synthesis of polysaccharide nanoparticles; evaluating features of the most studied polysaccharide drug carriers, such as chitosan, hyaluronic acid, and alginate polymers. The critical assessment of the most recent research published in literature allows us to assume that microfluidics will play an important role in the discovery and clinical translation of nanoplatforms.
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Affiliation(s)
- Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Silvia Pisani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Gloria Bergamini
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
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Chiesa E, Dorati R, Conti B, Modena T, Cova E, Meloni F, Genta I. Hyaluronic Acid-Decorated Chitosan Nanoparticles for CD44-Targeted Delivery of Everolimus. Int J Mol Sci 2018; 19:ijms19082310. [PMID: 30087241 PMCID: PMC6121415 DOI: 10.3390/ijms19082310] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [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: 07/10/2018] [Revised: 08/02/2018] [Accepted: 08/03/2018] [Indexed: 01/18/2023] Open
Abstract
Bronchiolitis obliterans syndrome (BOS), caused by lung allograft-derived mesenchymal cells' abnormal proliferation and extracellular matrix deposition, is the main cause of lung allograft rejection. In this study, a mild one-step ionotropic gelation method was set up to nanoencapsulate the everolimus, a key molecule in allograft organ rejection prevention, into hyaluronic acid-decorated chitosan-based nanoparticles. Rationale was the selective delivery of everolimus into lung allograft-derived mesenchymal cells; these cells are characterized by the CD44-overexpressing feature, and hyaluronic acid has proven to be a natural selective CD44-targeting moiety. The optimal process conditions were established by a design of experiment approach (full factorial design) aiming at the control of the nanoparticle size (≤200 nm), minimizing the size polydispersity (PDI 0.171 ± 0.04), and at the negative ζ potential maximization (-30.9 mV). The everolimus was successfully loaded into hyaluronic acid-decorated chitosan-based nanoparticles (95.94 ± 13.68 μg/100 mg nanoparticles) and in vitro released in 24 h. The hyaluronic acid decoration on the nanoparticles provided targetability to CD44-overexpressing mesenchymal cells isolated from bronchoalveolar lavage of BOS-affected patients. The mesenchymal cells' growth tests along with the nanoparticles uptake studies, at 37 °C and 4 °C, respectively, demonstrated a clear improvement of everolimus inhibitory activity when it is encapsulated in hyaluronic acid-decorated chitosan-based nanoparticles, ascribable to their active uptake mechanism.
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Affiliation(s)
- Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Emanuela Cova
- Clinica di Malattie del Apparato Respiratorio, IRCCS Fondazione S. Matteo, via Golgi 19, 27100 Pavia, Italy.
| | - Federica Meloni
- Clinica di Malattie del Apparato Respiratorio, IRCCS Fondazione S. Matteo, via Golgi 19, 27100 Pavia, Italy.
- Department of Molecular Medicine, Pneumology Unit, University of Pavia, Viale Golgi, 19, 27100 Pavia, Italy.
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
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42
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Chiesa E, Pisani S, Colzani B, Dorati R, Conti B, Modena T, Braekmans K, Genta I. Intra-Articular Formulation of GE11-PLGA Conjugate-Based NPs for Dexamethasone Selective Targeting-In Vitro Evaluation. Int J Mol Sci 2018; 19:E2304. [PMID: 30082640 PMCID: PMC6121689 DOI: 10.3390/ijms19082304] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/31/2018] [Accepted: 08/03/2018] [Indexed: 12/16/2022] Open
Abstract
Selectively targeted nanoscale drug delivery systems have recently emerged as promising intravenously therapeutic option for most chronic joint diseases. Here, a newly synthetized dodecapeptide (GE11)-polylactide-co-glycolide (PLGA)-based conjugate was used to prepare smart nanoparticles (NPs) intended for intra-articular administration and for selectively targeting Epidermal Growth Factor Receptor (EGFR). GE11-PLGA conjugate-based NPs are specifically uptaken by EGFR-overexpressed fibroblast; such as synoviocytes; which are the primarily cellular component involved in the development of destructive joint inflammation. The selective uptake could help to tune drug effectiveness in joints and to decrease local and systemic side effects. Dexamethasone (DXM) is a glucorticoid drug commonly used in joint disease treatment for both systemic and local administration route. In the present research; DXM was efficiently loaded into GE11-PLGA conjugate-based NPs through an eco-friendly nanoprecipitation method set up for this purpose. DXM loaded GE11-PLGA conjugate-based NPs revealed satisfactory ex vivo cytocompatibility; with proper size (≤150 nm) and good dimensional stability in synovial fluid. Intra-articular formulation was developed embedding DXM loaded GE11-PLGA conjugate-based NPs into thermosetting chitosan-based hydrogel; forming a biocompatible composite hydrogel able to quickly turn from liquid state into gel state at physiological temperature; within 15 min. Moreover; the use of thermosetting chitosan-based hydrogel extends the local release of active agent; DXM.
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Affiliation(s)
- Enrica Chiesa
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia (PV), Italy.
| | - Silvia Pisani
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia (PV), Italy.
| | - Barbara Colzani
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia (PV), Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia (PV), Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia (PV), Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia (PV), Italy.
| | - Kevin Braekmans
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent University, Ottergemsesteenweg 460, 9000 Gent, Belgium.
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia (PV), Italy.
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Dorati R, Conti B, Colzani B, Dondi D, Lazzaroni S, Modena T, Genta I. Ivermectin controlled release implants based on poly-D, l -lactide and poly-ε-caprolactone. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Dorati R, Pisani S, Maffeis G, Conti B, Modena T, Chiesa E, Bruni G, Musazzi UM, Genta I. Study on hydrophilicity and degradability of chitosan/polylactide-co-polycaprolactone nanofibre blend electrospun membrane. Carbohydr Polym 2018; 199:150-160. [PMID: 30143115 DOI: 10.1016/j.carbpol.2018.06.050] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [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: 04/08/2018] [Revised: 06/07/2018] [Accepted: 06/12/2018] [Indexed: 12/31/2022]
Abstract
Electrospinning is an interesting technique to produce polymer membranes made of entangled nanofibres. The technique is raising interest in pharmaceutical and biomedical areas. Either electrospun membranes are studied for tissue regeneration purposes, or incorporation of nanoparticles in electrospun membranes can be an opportunity to control the delivery of drug or to obtain dual drug delivery system. In this work suspensions of hydrochloride chitosan salt in copolymer polylactide-co-polycaprolactone (PLA-PCL) solution were electrospun in order to assess an advanced study for developing polymer nanofibre blend membrane loaded with chitosan polymer. The aim of the work was to investigate the properties and stability of chitosan/PLA-PCL electrospun membranes considering their application for tissue regeneration and drug delivery. The electrospun membranes were characterized for their physico-chemical (FT-IR) morphology (SEM) and in vitro biological properties (cytocompatibility and cells engraftment). Results show that homogeneous electrospun PLA-PCL/chitosan blend nanofibres in the range size 800 nm were obtained. Chitosan was loaded inside the nanofibres up to 27.2% (w/w) without modifying nanofibre shape, and only 6% of the loaded chitosan resulted to be on the nanofibre surface. The presence of chitosan in the nanofibres has shown to accelerate the electrospun membranes degradation in vitro.
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Affiliation(s)
- R Dorati
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - S Pisani
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - G Maffeis
- Phase I Clinical Trial Unit and Experimental Therapy, IRCCS Policlinico S. Matteo, Viale Camillo Golgi 19, 27100, Pavia, Italy
| | - B Conti
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy.
| | - T Modena
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - E Chiesa
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
| | - G Bruni
- Department of Chemistry, Chemical Physical Section University of Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - U M Musazzi
- Department of Pharmaceutical Sciences, University of Milano, Via Colombo 71, 20133, Milano, Italy
| | - I Genta
- Department of Drug Science, University of Pavia, Via Taramelli 12, 27100, Pavia, Italy
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45
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Scasso F, Ferrari G, DE Vincentiis GC, Arosio A, Bottero S, Carretti M, Ciardo A, Cocuzza S, Colombo A, Conti B, Cordone A, DE Ciccio M, Delehaye E, Della Vecchia L, DE Macina I, Dentone C, DI Mauro P, Dorati R, Fazio R, Ferrari A, Ferrea G, Giannantonio S, Genta I, Giuliani M, Lucidi D, Maiolino L, Marini G, Marsella P, Meucci D, Modena T, Montemurri B, Odone A, Palma S, Panatta ML, Piemonte M, Pisani P, Pisani S, Prioglio L, Scorpecci A, Scotto DI Santillo L, Serra A, Signorelli C, Sitzia E, Tropiano ML, Trozzi M, Tucci FM, Vezzosi L, Viaggi B. Emerging and re-emerging infectious disease in otorhinolaryngology. Acta Otorhinolaryngol Ital 2018; 38:S1-S106. [PMID: 29967548 PMCID: PMC6056203 DOI: 10.14639/0392-100x-suppl.1-38-2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY Emerging and re-emerging infectious disease in otorhinolaryngology (ENT) are an area of growing epidemiological and clinical interest. The aim of this section is to comprehensively report on the epidemiology of key infectious disease in otorhinolaryngology, reporting on their burden at the national and international level, expanding of the need of promoting and implementing preventive interventions, and the rationale of applying evidence-based, effective and cost- effective diagnostic, curative and preventive approaches. In particular, we focus on i) ENT viral infections (HIV, Epstein-Barr virus, Human Papilloma virus), retrieving the available evidence on their oncogenic potential; ii) typical and atypical mycobacteria infections; iii) non-specific granulomatous lymphadenopathy; iv) emerging paediatric ENT infectious diseases and the prevention of their complications; v) the growing burden of antimicrobial resistance in ENT and the strategies for its control in different clinical settings. We conclude by outlining knowledge gaps and action needed in ENT infectious diseases research and clinical practice and we make references to economic analysis in the field of ENT infectious diseases prevention and care.
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Affiliation(s)
- F Scasso
- SOC Otorinolaringoiatria, ASL 3 Genovese, Ospedale P.A. Micone, Genova, Italy
| | - G Ferrari
- SOC Otorinolaringoiatria, ASL 5 Genovese, Ospedale P.A. Levante Ligure, La Spezia, Italy
| | - G C DE Vincentiis
- UOC Otorinolaringoiatria, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - A Arosio
- Clinica Otorinolaringoiatria, Ospedale Macchi, ASST Settelaghi, Varese, Italy
| | - S Bottero
- UOC Chirurgia delle Vie Aeree, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - M Carretti
- UOC Otorinolaringoiatria, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - A Ciardo
- SOC Otorinolaringoiatria, ASL 5 Genovese, Ospedale P.A. Levante Ligure, La Spezia, Italy
| | - S Cocuzza
- Clinica di Otorinolaringoiatria, Università degli Studi di Catania, Catania, Italy
| | - A Colombo
- SOC Otorinolaringoiatria, Ospedale Cardinal Massaia, Asti, Italy
| | - B Conti
- Dipartimento di Scienze del Farmaco, Università degli Studi di Pavia, Pavia, Italy
| | - A Cordone
- SOC Otorinolaringoiatria, ASL 3 Genovese, Ospedale P.A. Micone, Genova, Italy
| | - M DE Ciccio
- SOC Otorinolaringoiatria, ASL 5 Genovese, Ospedale P.A. Levante Ligure, La Spezia, Italy
| | - E Delehaye
- SOC Otorinolaringoiatria, ASL 5 Genovese, Ospedale P.A. Levante Ligure, La Spezia, Italy
| | - L Della Vecchia
- Clinica Otorinolaringoiatria, Ospedale Macchi, ASST Settelaghi, Varese, Italy
| | - I DE Macina
- SOC Malattie Infettive, ASL 1 Imperiese, Ospedale di Sanremo, Italy
| | - C Dentone
- SOC Malattie Infettive, ASL 1 Imperiese, Ospedale di Sanremo, Italy
| | - P DI Mauro
- Clinica di Otorinolaringoiatria, Università degli Studi di Catania, Catania, Italy
| | - R Dorati
- Dipartimento di Scienze del Farmaco, Università degli Studi di Pavia, Pavia, Italy
| | - R Fazio
- SOC Otorinolaringoiatria, ASL 5 Genovese, Ospedale P.A. Levante Ligure, La Spezia, Italy
| | - A Ferrari
- Direzione Sanitaria, AOU Parma, Italy
| | - G Ferrea
- SOC Malattie Infettive, ASL 1 Imperiese, Ospedale di Sanremo, Italy
| | - S Giannantonio
- UOC Audiologia e Otochirurgia, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - I Genta
- Dipartimento di Scienze del Farmaco, Università degli Studi di Pavia, Pavia, Italy
| | - M Giuliani
- UOC Otorinolaringoiatria, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - D Lucidi
- UOC Audiologia e Otochirurgia, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - L Maiolino
- Clinica di Otorinolaringoiatria, Università degli Studi di Catania, Catania, Italy
| | - G Marini
- UOC Otorinolaringoiatria, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - P Marsella
- UOC Audiologia e Otochirurgia, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - D Meucci
- UOC Chirurgia delle Vie Aeree, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - T Modena
- Dipartimento di Scienze del Farmaco, Università degli Studi di Pavia, Pavia, Italy
| | - B Montemurri
- UOC Audiologia e Otochirurgia, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - A Odone
- Facoltà di Medicina e Chirurgia, Università Vita-Salute San Raffaele, Milano, Italy
| | - S Palma
- SOC Otorinolaringoiatria, Azienda Sanitaria Universitaria di Udine (ASUIUD), Italy
| | - M L Panatta
- UOC Otorinolaringoiatria, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - M Piemonte
- SOC Otorinolaringoiatria, Azienda Sanitaria Universitaria di Udine (ASUIUD), Italy
| | - P Pisani
- SOC Otorinolaringoiatria, Ospedale Cardinal Massaia, Asti, Italy
| | - S Pisani
- Dipartimento di Scienze del Farmaco, Università degli Studi di Pavia, Pavia, Italy
| | - L Prioglio
- SOC Otorinolaringoiatria, ASL 3 Genovese, Ospedale P.A. Micone, Genova, Italy
| | - A Scorpecci
- UOC Audiologia e Otochirurgia, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | | | - A Serra
- Clinica di Otorinolaringoiatria, Università degli Studi di Catania, Catania, Italy
| | - C Signorelli
- Dipartimento di Medicina e Chirurgia, Università degli Studi di Parma, Italy; Facoltà di Medicina e Chirurgia, Università Vita-Salute San Raffaele, Milano, Italy
| | - E Sitzia
- UOC Otorinolaringoiatria, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - M L Tropiano
- UOC Chirurgia delle Vie Aeree, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - M Trozzi
- UOC Chirurgia delle Vie Aeree, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - F M Tucci
- UOS Chirurgia Cervicale ORL, Ospedale Pediatrico Bambino Gesù, IRCCS, Roma, Italy
| | - L Vezzosi
- Dipartimento di Medicina e Chirurgia, Università degli Studi di Parma, Italy; Dipartimento di Medicina Sperimentale, Università degli Studi della Campania Luigi Vanvitelli, Napoli, Italy
| | - B Viaggi
- SOC Neuroanestesia e Rianimazione, A.O.U. Careggi, Firenze, Italy
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Genta I, Chiesa E, Colzani B, Modena T, Conti B, Dorati R. GE11 Peptide as an Active Targeting Agent in Antitumor Therapy: A Minireview. Pharmaceutics 2017; 10:E2. [PMID: 29271876 PMCID: PMC5874815 DOI: 10.3390/pharmaceutics10010002] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [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: 10/29/2017] [Revised: 12/06/2017] [Accepted: 12/11/2017] [Indexed: 01/06/2023] Open
Abstract
A lot of solid tumors are characterized by uncontrolled signal transduction triggered by receptors related to cellular growth. The targeting of these cell receptors with antitumor drugs is essential to improve chemotherapy efficacy. This can be achieved by conjugation of an active targeting agent to the polymer portion of a colloidal drug delivery system loaded with an antitumor drug. The goal of this minireview is to report and discuss some recent results in epidermal growth factor receptor targeting by the GE11 peptide combined with colloidal drug delivery systems as smart carriers for antitumor drugs. The minireview chapters will focus on explaining and discussing: (i) Epidermal growth factor receptor (EGFR) structures and functions; (ii) GE11 structure and biologic activity; (iii) examples of GE11 conjugation and GE11-conjugated drug delivery systems. The rationale is to contribute in gathering information on the topic of active targeting to tumors. A case study is introduced, involving research on tumor cell targeting by the GE11 peptide combined with polymer nanoparticles.
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Affiliation(s)
- Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Barbara Colzani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
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Dorati R, DeTrizio A, Modena T, Conti B, Benazzo F, Gastaldi G, Genta I. Biodegradable Scaffolds for Bone Regeneration Combined with Drug-Delivery Systems in Osteomyelitis Therapy. Pharmaceuticals (Basel) 2017; 10:E96. [PMID: 29231857 PMCID: PMC5748651 DOI: 10.3390/ph10040096] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [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: 10/01/2017] [Revised: 11/27/2017] [Accepted: 11/29/2017] [Indexed: 12/31/2022] Open
Abstract
A great deal of research is ongoing in the area of tissue engineering (TE) for bone regeneration. A possible improvement in restoring damaged tissues involves the loading of drugs such as proteins, genes, growth factors, antibiotics, and anti-inflammatory drugs into scaffolds for tissue regeneration. This mini-review is focused on the combination of the local delivery of antibiotic agents with bone regenerative therapy for the treatment of a severe bone infection such as osteomyelitis. The review includes a brief explanation of scaffolds for bone regeneration including scaffolds characteristics and types, a focus on severe bone infections (especially osteomyelitis and its treatment), and a literature review of local antibiotic delivery by the combination of scaffolds and drug-delivery systems. Some examples related to published studies on gentamicin sulfate-loaded drug-delivery systems combined with scaffolds are discussed, and future perspectives are highlighted.
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Affiliation(s)
- Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
| | - Antonella DeTrizio
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
| | - Francesco Benazzo
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
- Centre oh Health Technology (CHT), Via Ferrata 1, University of Pavia, 27100 Pavia, Italy.
| | - Giulia Gastaldi
- Centre oh Health Technology (CHT), Via Ferrata 1, University of Pavia, 27100 Pavia, Italy.
- Department of Molecular Medicine, University of Pavia, Viale Taramelli 2, 27100 Pavia, Italy.
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
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Chiesa E, Dorati R, Modena T, Conti B, Genta I. Multivariate analysis for the optimization of microfluidics-assisted nanoprecipitation method intended for the loading of small hydrophilic drugs into PLGA nanoparticles. Int J Pharm 2017; 536:165-177. [PMID: 29175645 DOI: 10.1016/j.ijpharm.2017.11.044] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [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: 07/19/2017] [Revised: 11/14/2017] [Accepted: 11/21/2017] [Indexed: 12/14/2022]
Abstract
Design of Experiment-assisted evaluation of critical process (total flow rate, TFR, flow rate ratio, FRR) and formulation (polymer concentration and structure, drug:polymer ratio) variables in a novel microfluidics-based device, a staggered herringbone micromixer (SHM), for poly(lactic-co-glycolic acid) copolymer (PLGA) nanoparticles (NPs) manufacturing was performed in order to systematically evaluate and mathematically describe their effects on NPs sizes and drug encapsulation; a small hydrophilic moiety, N-acetylcysteine, was chosen as challenging model drug. SHM-assisted nanoprecipitation method consistently yielded NPs with tailor made sizes (in the range of 100-900 nm) and polydispersity index range from 0.061 to 0.286. Significant effects on NPs sizes were highlighted for TFR and FRR: increasing TFR (from 5 to 15 mL/min) and decreasing FRR (from 1:1 to 1:5 v/v, acetonitrile: buffer) NPs with mean diameter <200 nm were obtained. SHM technique allowed for flexible, application-specific tuning of PLGA NPs size using organic solvents with relatively low toxicity (acetone, acetonitrile), varying aqueous phase composition (Tris buffer vs PVA aqueous solution) and PLGA characteristics (Mw ranging from 25-90 kDa, capped or un-capped PLGA, different lactide:glycolide molar ratio). A very satisfactory N-Ac encapsulation efficiency (more than 67%) and a prolonged release (by 168 h) were achieved.
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Affiliation(s)
- E Chiesa
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy
| | - R Dorati
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., V.le Taramelli 24, 27100 Pavia, Italy
| | - T Modena
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy
| | - B Conti
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy; Polymerix s.r.l., V.le Taramelli 24, 27100 Pavia, Italy
| | - I Genta
- Department of Drug Sciences, University of Pavia, V.le Taramelli 12, 27100 Pavia, Italy.
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Chiesa E, Monti L, Paganini C, Dorati R, Conti B, Modena T, Rossi A, Genta I. Polyethylene Glycol-Poly-Lactide-co-Glycolide Block Copolymer-Based Nanoparticles as a Potential Tool for Off-Label Use of N-Acetylcysteine in the Treatment of Diastrophic Dysplasia. J Pharm Sci 2017; 106:3631-3641. [PMID: 28826881 DOI: 10.1016/j.xphs.2017.08.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/16/2017] [Accepted: 08/04/2017] [Indexed: 11/25/2022]
Abstract
Potential off-label therapeutic role of N-acetylcysteine (N-Ac) was recently demonstrated in the treatment of diastrophic dysplasia (DTD) using mutant mice; its main drawback is the rapid clearance from blood due to the liver metabolism. Our goal was to investigate the potential of polyethylene glycol polylactide-co-glycolide block copolymer (PLGA-PEG)-based nanoparticles (NPs) in order to improve in vivo biodistribution performances and N-Ac pharmacokinetic profile after subcutaneous administration in mice. Results suggest that N-Ac can be effectively loaded into NPs (about 99 μg/mg NPs) using a suitably optimized nanoprecipitation method. Thanks to the good physical characteristics (mean diameter <100 nm, zeta potential about -8 mV) NPs can reach skeletal tissue in particular femoral head and proximal tibia epiphysis at the sixth hour after injection, remaining in the tissues till 24 h. Furthermore, pharmacokinetic study revealed a sustained N-Ac concentration in plasma with a peak concentration of 2.48 ± 1.72 μM at the 24th hour after injection. Overall, results highlight the actual interest of N-Ac-loaded PLGA-PEG NPs as useful platform for N-Ac parenteral administration.
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Affiliation(s)
- Enrica Chiesa
- Department of Drug Science, University of Pavia, V.le Taramelli 115, Pavia 27100, Italy
| | - Luca Monti
- Department of Molecular Medicine, University of Pavia, V.le Taramelli 3B, Pavia 27100, Italy
| | - Chiara Paganini
- Department of Molecular Medicine, University of Pavia, V.le Taramelli 3B, Pavia 27100, Italy
| | - Rossella Dorati
- Department of Drug Science, University of Pavia, V.le Taramelli 115, Pavia 27100, Italy
| | - Bice Conti
- Department of Drug Science, University of Pavia, V.le Taramelli 115, Pavia 27100, Italy
| | - Tiziana Modena
- Department of Drug Science, University of Pavia, V.le Taramelli 115, Pavia 27100, Italy
| | - Antonio Rossi
- Department of Molecular Medicine, University of Pavia, V.le Taramelli 3B, Pavia 27100, Italy
| | - Ida Genta
- Department of Drug Science, University of Pavia, V.le Taramelli 115, Pavia 27100, Italy.
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