1
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Al-Sahaf Z, Raimi-Abraham B, Licciardi M, de Mohac LM. Influence of Polyvinyl Alcohol (PVA) on PVA-Poly-N-hydroxyethyl-aspartamide (PVA-PHEA) Microcrystalline Solid Dispersion Films. AAPS PharmSciTech 2020; 21:267. [PMID: 33006710 PMCID: PMC7532132 DOI: 10.1208/s12249-020-01811-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 09/02/2020] [Indexed: 11/30/2022] Open
Abstract
This study was conducted to formulate buccal films consisting of polyvinyl alcohol (PVA) and poly-N-hydroxyethyl-aspartamide (PHEA), to improve the dissolution of the drug through the oral mucosa. Ibuprofen sodium salt was used as a model drug, and the buccal film was expected to enhance its dissolution rate. Two different concentrations of PVA (5% w/v and 7.5% w/v) were used. Solvent casting was used to prepare films, where a solution consisting of drug and polymer was cast and allowed to dry. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM) were used to investigate the properties of films. In vitro dissolution studies were also conducted to investigate drug release. SEM studies showed that films containing a higher concentration of PVA had larger particles in microrange. FTIR studies confirmed the presence of the drug in films and indicated that ibuprofen sodium did not react with polymers. DSC studies confirmed the crystalline form of ibuprofen sodium when incorporated within films. In vitro dissolution studies found that the dissolution percentage of ibuprofen sodium alone was increased when incorporated within the film from 59 to 74%. This study led to the development of solid microcrystalline dispersion as a buccal film with a faster dissolution rate than the drug alone overcoming problem of poor solubility.
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Affiliation(s)
| | | | | | - Laura Modica de Mohac
- King's College London, London, UK. .,University of Study of Palermo, Palermo, Italy.
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2
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Effect of actively targeted copolymer coating on solid tumors eradication by gold nanorods-induced hyperthermia. Int J Pharm 2020; 587:119641. [PMID: 32673768 DOI: 10.1016/j.ijpharm.2020.119641] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/03/2020] [Accepted: 07/08/2020] [Indexed: 12/25/2022]
Abstract
Efforts in the field of anticancer therapy are increasingly focusing on the development of localized and selective treatments. Photothermal therapy (PTT) can lead to a spatially confined death of cancer cells, exploiting an increasing in temperature generated after UV-NIR irradiation of peculiar materials. Herein, a new actively targeted gold-based drug delivery system, named PHEA-LA-Fol-AuNRs/Iri, was explored for hyperthermia and chemotherapy colon cancer treatment. Gold nanorods were stabilized using a folate-derivative of α,β-poly(N-2-hydroxyethyl)-D,L-aspartamide (PHEA-LA-PEG-FA) as coating agent and then loaded with the antineoplastic drug irinotecan (Iri). The efficacy of empty and irinotecan-bearing systems was investigated in vitro on human colon cancer (HCT116) cell line, as well as in vivo, employing a xenograft mouse model of colon cancer. After laser treatment, both nanostructures tested induced a considerable deceleration in tumor growth overtime, achieving the total eradication of the cancer when the nanosystems produced were intratumorally administered. Biodistribution data showed that the polymer coated nanorods were able to preferentially accumulate in the tumor site. Considering the excellent stability in aqueous media, the capacity to reach the tumor site and, finally, the in vivo efficacy, PHEA-LA-Fol-AuNRs/Iri might be recommended as an effective tool in the chemotherapy and PTT of colon cancer.
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3
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Polyaspartamide based hydrogel with cell recruitment properties for the local administration of hydrophobic anticancer drugs. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Li Volsi A, Fiorica C, D'Amico M, Scialabba C, Palumbo FS, Giammona G, Licciardi M. Hybrid Gold/Silica/Quantum-Dots supramolecular-nanostructures encapsulated in polymeric micelles as potential theranostic tool for targeted cancer therapy. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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5
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Porsio B, Craparo EF, Mauro N, Giammona G, Cavallaro G. Mucus and Cell-Penetrating Nanoparticles Embedded in Nano-into-Micro Formulations for Pulmonary Delivery of Ivacaftor in Patients with Cystic Fibrosis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:165-181. [PMID: 29235345 DOI: 10.1021/acsami.7b14992] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Here, mucus-penetrating nanoparticles (NPs) for pulmonary administration of ivacaftor in patients with cystic fibrosis (CF) were produced with the dual aim of enhancing ivacaftor delivery to the airway epithelial cells, by rapid diffusion through the mucus barrier, and at the same time, promoting ivacaftor lung cellular uptake. Pegylated and Tat-decorated fluorescent nanoparticles (FNPs) were produced by nanoprecipitation, starting from two synthetic copolymers, and showed nanometric sizes (∼70 nm), a slightly negative ζ potential, and high cytocompatibility toward human bronchial epithelium cells. After having showed the significant presence of poly(ethylene glycol) chains and Tat protein onto the FNP surface, the FNP mucus-penetrating ability, ivacaftor release profile, and lung cellular uptake were studied in the presence of CF-artificial mucus as a function of the FNP surface chemical composition. Moreover, microparticle-based pulmonary drug-delivery systems composed of mucus-penetrating FNPs loaded with ivacaftor and mannitol were prepared by using the nano-into-micro strategy and realized by spray-drying, thereby providing optimal preservation and stabilization of FNP technological and fluorescence properties.
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Affiliation(s)
- Barbara Porsio
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo , Via Archirafi 32, 90123 Palermo, Italy
| | - Emanuela Fabiola Craparo
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo , Via Archirafi 32, 90123 Palermo, Italy
| | - Nicolò Mauro
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo , Via Archirafi 32, 90123 Palermo, Italy
| | - Gaetano Giammona
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo , Via Archirafi 32, 90123 Palermo, Italy
- Mediterranean Center for Human Health Advanced Biotechnologies (CHAB), Aten Center, University of Palermo , Viale delle Scienze, Ed. 18, 90123 Palermo, Italy
| | - Gennara Cavallaro
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo , Via Archirafi 32, 90123 Palermo, Italy
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6
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Wan J, Sun L, Wu P, Wang F, Guo J, Cheng J, Wang C. Synthesis of indocyanine green functionalized comblike poly(aspartic acid) derivatives for enhanced cancer cell ablation by targeting the endoplasmic reticulum. Polym Chem 2018. [DOI: 10.1039/c7py01994g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PTX-loaded comblike polymer PAsp-g-(PEG-ICG) micelles can effectively kill cancer cells via elevated endoplasmic reticulum stress under laser irradiation.
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Affiliation(s)
- Jiaxun Wan
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Luyan Sun
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Pan Wu
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Fang Wang
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Jia Guo
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Jianjun Cheng
- Department of Materials Science and Engineering
- University of Illinois at Urbana–Champaign
- Urbana
- USA
| | - Changchun Wang
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
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7
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Porsio B, Cusimano MG, Schillaci D, Craparo EF, Giammona G, Cavallaro G. Nano into Micro Formulations of Tobramycin for the Treatment of Pseudomonas aeruginosa Infections in Cystic Fibrosis. Biomacromolecules 2017; 18:3924-3935. [DOI: 10.1021/acs.biomac.7b00945] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Barbara Porsio
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Maria Grazia Cusimano
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Domenico Schillaci
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Emanuela Fabiola Craparo
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
| | - Gaetano Giammona
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
- Mediterranean
Center for Human Health Advanced Biotechnologies (CHAB), ATeN Center, University of Palermo, Viale delle
Scienze, Ed. 18, Palermo, Italy
| | - Gennara Cavallaro
- Dipartimento
di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Via Archirafi 32, 90123 Palermo, Italy
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8
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Bongiovì F, Di Prima G, Palumbo FS, Licciardi M, Pitarresi G, Giammona G. Hyaluronic Acid-Based Micelles as Ocular Platform to Modulate the Loading, Release, and Corneal Permeation of Corticosteroids. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201700261] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/10/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Flavia Bongiovì
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF); Università degli Studi di Palermo; Via Archirafi 32 90123 Palermo Italy
| | - Giulia Di Prima
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF); Università degli Studi di Palermo; Via Archirafi 32 90123 Palermo Italy
| | - Fabio S. Palumbo
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF); Università degli Studi di Palermo; Via Archirafi 32 90123 Palermo Italy
| | - Mariano Licciardi
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF); Università degli Studi di Palermo; Via Archirafi 32 90123 Palermo Italy
- Mediterranean Center of Human Health Advanced Biotechnologies (CHAB); AteN Center; Viale delle Scienze, Edificio 18 90128 Palermo Italy
| | - Giovanna Pitarresi
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF); Università degli Studi di Palermo; Via Archirafi 32 90123 Palermo Italy
| | - Gaetano Giammona
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF); Università degli Studi di Palermo; Via Archirafi 32 90123 Palermo Italy
- Mediterranean Center of Human Health Advanced Biotechnologies (CHAB); AteN Center; Viale delle Scienze, Edificio 18 90128 Palermo Italy
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9
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Cervello M, Pitarresi G, Volpe AB, Porsio B, Balasus D, Emma MR, Azzolina A, Puleio R, Loria GR, Puleo S, Giammona G. Nanoparticles of a polyaspartamide-based brush copolymer for modified release of sorafenib: In vitro and in vivo evaluation. J Control Release 2017; 266:47-56. [PMID: 28917533 DOI: 10.1016/j.jconrel.2017.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 09/06/2017] [Accepted: 09/11/2017] [Indexed: 12/12/2022]
Abstract
In this paper, we describe the preparation of polymeric nanoparticles (NPs) loaded with sorafenib for the treatment of hepatocellular carcinoma (HCC). A synthetic brush copolymer, named PHEA-BIB-ButMA (PBB), was synthesized by Atom Trasnfer Radical Polymerization (ATRP) starting from the α-poly(N-2-hydroxyethyl)-d,l-aspartamide (PHEA) and poly butyl methacrylate (ButMA). Empty and sorafenib loaded PBB NPs were, then, produced by using a dialysis method and showed spherical morphology, colloidal size, negative ζ potential and the ability to allow a sustained sorafenib release in physiological environment. Sorafenib loaded PBB NPs were tested in vitro on HCC cells in order to evaluate their cytocompatibility and anticancer efficacy if compared to free drug. Furthermore, the enhanced anticancer effect of sorafenib loaded PBB NPs was demonstrated in vivo by using a xenograft model, by first allowing Hep3B cells to grow subcutaneously into nude mice and then administering sorafenib as free drug or incorporated into NPs via intraperitoneal injection. Finally, in vivo biodistribution studies were performed, showing the ability of the produced drug delivery system to accumulate in a significant manner in the solid tumor by passive targeting, thanks to the enhanced permeability and retention effect.
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Affiliation(s)
- Melchiorre Cervello
- Istituto di Biomedicina e Immunologia Molecolare "Alberto Monroy", Consiglio Nazionale delle Ricerche (CNR), Palermo, Italy
| | - Giovanna Pitarresi
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Università degli Studi di Palermo, Italy.
| | - Antonella Bavuso Volpe
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Università degli Studi di Palermo, Italy
| | - Barbara Porsio
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Università degli Studi di Palermo, Italy
| | - Daniele Balasus
- Istituto di Biomedicina e Immunologia Molecolare "Alberto Monroy", Consiglio Nazionale delle Ricerche (CNR), Palermo, Italy
| | - Maria Rita Emma
- Istituto di Biomedicina e Immunologia Molecolare "Alberto Monroy", Consiglio Nazionale delle Ricerche (CNR), Palermo, Italy
| | - Antonina Azzolina
- Istituto di Biomedicina e Immunologia Molecolare "Alberto Monroy", Consiglio Nazionale delle Ricerche (CNR), Palermo, Italy
| | - Roberto Puleio
- Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri", Area Diagnostica Specialistica, Laboratorio di Istopatologia ed Immunoistochimica, Palermo, Italy
| | - Guido Ruggero Loria
- Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri", Area Diagnostica Specialistica, Laboratorio di Istopatologia ed Immunoistochimica, Palermo, Italy
| | - Stefano Puleo
- Dipartimento di Scienze Mediche, Chirurgiche e Tecnologie Avanzate "G.F. Ingrassia", Università degli Studi di Catania, Italy
| | - Gaetano Giammona
- Istituto di Biomedicina e Immunologia Molecolare "Alberto Monroy", Consiglio Nazionale delle Ricerche (CNR), Palermo, Italy
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10
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Polyaspartamide-Based Nanoparticles Loaded with Fluticasone Propionate and the In Vitro Evaluation towards Cigarette Smoke Effects. NANOMATERIALS 2017; 7:nano7080222. [PMID: 28805713 PMCID: PMC5575704 DOI: 10.3390/nano7080222] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/04/2017] [Accepted: 08/10/2017] [Indexed: 12/18/2022]
Abstract
This paper describes the evaluation of polymeric nanoparticles (NPs) as a potential carrier for lung administration of fluticasone propionate (FP). The chosen polymeric material to produce NPs was a copolymer based on α,β-poly(N-2-hydroxyethyl)-d,l-aspartamide (PHEA) whose backbone was derivatised with different molecules, such as poly(lactic acid) (PLA) and polyethylenglycol (PEG). The chosen method to produce NPs from PHEA-PLA-PEG2000 was the method based on high-pressure homogenization and subsequent solvent evaporation by adding Pluronic F68 during the process and trehalose before lyophilisation. Obtained colloidal FP-loaded NPs showed a slightly negative surface charge and nanometric dimensions that are maintained after storage for one year at −20 °C and 5 °C. The FP loading was about 2.9 wt % and the drug was slowly released in simulated lung fluid. Moreover, the obtained NPs, containing the drug or not, were biocompatible and did not induce cell necrosis and cell apoptosis on bronchial epithelial cells (16-HBE). Further in vitro testing on cigarette smoke extract (CSE)-stimulated 16-HBE revealed that FP-loaded NPs were able to reduce the survivin expression, while either free FP or empty NPs were not able to significantly reduce this effect.
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11
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Photocrosslinkable polyaspartamide/polylactide copolymer and its porous scaffolds for chondrocytes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:794-801. [PMID: 28482592 DOI: 10.1016/j.msec.2017.03.128] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 03/16/2017] [Accepted: 03/17/2017] [Indexed: 01/15/2023]
Abstract
With the aim to produce, by a simple and reproducible technique, porous scaffolds potentially employable for tissue engineering purposes, in this work, we have synthesized a methacrylate (MA) copolymer of α,β-poly(N-2-hydroxyethyl)-dl-aspartamide (PHEA) and polylactic acid (PLA). PHEA-PLA-MA has been dissolved in organic solvent at different concentrations in the presence of NaCl particles with different granulometry, and through UV irradiation and further salt leaching technique, various porous scaffolds have been prepared. Obtained samples have been characterized by scanning electron microscopy and their porosity has been evaluated as well as their degradation profile in aqueous medium in the absence or in the presence of esterase from porcine liver. PHEA-PLA-MA scaffold that has shown homogeneous porosity and the best degradation profile has been further characterized to study its mechanical properties along with its capacity to incorporate and to control the release of dexamethasone. Finally, the ability to allow a three-dimensional culture of bovine articular chondrocytes have been also investigated.
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12
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Bui QT, Jeon YS, Kim J, Kim JH. Stabilized polymeric nanoparticle from amphiphilic mPEG-b-polyaspartamides containing ‘click’ functional groups. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1263957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Quang Tri Bui
- School of Chemical Engineering, Sungkyunkwan University, Suwon, South Korea
| | - Young Sil Jeon
- School of Chemical Engineering, Sungkyunkwan University, Suwon, South Korea
| | - Jaeyun Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, South Korea
| | - Ji-Heung Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon, South Korea
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13
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Lv S, Wu Y, Dang J, Tang Z, Song Z, Ma S, Wang X, Chen X, Cheng J, Yin L. Investigation on the controlled synthesis and post-modification of poly-[(N-2-hydroxyethyl)-aspartamide]-based polymers. Polym Chem 2017. [DOI: 10.1039/c6py02230h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the controlled synthesis of PHEA-based polymers and enhanced the post-modification reactivity by reducing the intramolecular hydrogen bonding.
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14
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Craparo E, Di Gioia S, Trapani A, Cellamare S, Belgiovine G, Mandracchia D, Giammona G, Cavallaro G, Conese M. Realization of polyaspartamide-based nanoparticles and in vivo lung biodistribution evaluation of a loaded glucocorticoid after aerosolization in mice. Int J Pharm 2016; 510:263-70. [DOI: 10.1016/j.ijpharm.2016.06.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/13/2016] [Accepted: 06/16/2016] [Indexed: 10/21/2022]
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15
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Evaluation of biodegradability on polyaspartamide-polylactic acid based nanoparticles by chemical hydrolysis studies. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.05.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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16
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Paolino D, Licciardi M, Celia C, Giammona G, Fresta M, Cavallaro G. Bisphosphonate–polyaspartamide conjugates as bone targeted drug delivery systems. J Mater Chem B 2015; 3:250-259. [DOI: 10.1039/c4tb00955j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly-hydroxy-aspartamide was used as a backbone to synthesize bisphosphonate derivatives thus achieving macromolecular carriers to be potentially used as targeting agents for bone drug delivery.
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Affiliation(s)
- D. Paolino
- Department of Health Sciences
- #IRC FSH-Interregional Research Center for Food Safety &, Health
- University of Catanzaro “Magna Graecia”
- Campus Universitario “S. Venuta”
- I-88100 Catanzaro
| | - M. Licciardi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies
- (STEBICEF), Sezione di Chimica e Tecnologie Farmaceutiche
- Universita degli Studi di Palermo
- 90123 Palermo
- Italy
| | - C. Celia
- Department of Pharmacy
- University of Chieti – Pescara “G. d'Annunzio”
- Chieti 66013
- Italy
- Department of Nanomedicine
| | - G. Giammona
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies
- (STEBICEF), Sezione di Chimica e Tecnologie Farmaceutiche
- Universita degli Studi di Palermo
- 90123 Palermo
- Italy
| | - M. Fresta
- Department of Health Sciences
- #IRC FSH-Interregional Research Center for Food Safety &, Health
- University of Catanzaro “Magna Graecia”
- Campus Universitario “S. Venuta”
- I-88100 Catanzaro
| | - G. Cavallaro
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies
- (STEBICEF), Sezione di Chimica e Tecnologie Farmaceutiche
- Universita degli Studi di Palermo
- 90123 Palermo
- Italy
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17
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Fiorica C, Palumbo FS, Pitarresi G, Gulino A, Agnello S, Giammona G. Injectable in situ forming hydrogels based on natural and synthetic polymers for potential application in cartilage repair. RSC Adv 2015. [DOI: 10.1039/c4ra16411c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Injectable hydrogels based on hyaluronic acid, elastin and a biocompatible polyaspartamide are optimal scaffolds of viable chondrocytes for potential cartilage repair.
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Affiliation(s)
- Calogero Fiorica
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche
- Sezione di Chimica e Tecnologie Farmaceutiche
- Universitá degli Studi di Palermo
- Palermo
- Italy
| | - Fabio Salvatore Palumbo
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche
- Sezione di Chimica e Tecnologie Farmaceutiche
- Universitá degli Studi di Palermo
- Palermo
- Italy
| | - Giovanna Pitarresi
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche
- Sezione di Chimica e Tecnologie Farmaceutiche
- Universitá degli Studi di Palermo
- Palermo
- Italy
| | - Alessandro Gulino
- Department of Health Science
- Human Pathology Section
- School of Medicine
- Palermo
- Italy
| | - Stefano Agnello
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche
- Sezione di Chimica e Tecnologie Farmaceutiche
- Universitá degli Studi di Palermo
- Palermo
- Italy
| | - Gaetano Giammona
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche
- Sezione di Chimica e Tecnologie Farmaceutiche
- Universitá degli Studi di Palermo
- Palermo
- Italy
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18
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Sardo C, Nottelet B, Triolo D, Giammona G, Garric X, Lavigne JP, Cavallaro G, Coudane J. When functionalization of PLA surfaces meets Thiol-Yne photochemistry: case study with antibacterial polyaspartamide derivatives. Biomacromolecules 2014; 15:4351-62. [PMID: 25322257 DOI: 10.1021/bm5013772] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work we wish to report on the covalent functionalization of polylactide (PLA) surfaces by photoradical thiol-yne to yield antibacterial surfaces. At first, hydrophilic and hydrophobic thiol fluorescent probes are synthesized and used to study and optimize the conditions of ligation on alkyne-PLA surfaces. In a second part, a new antibacterial polyaspartamide copolymer is covalently grafted. The covalent surface modification and the density of surface functionalization are evaluated by SEC and XPS analyses. No degradation of PLA chains is observed, whereas covalent grafting is confirmed by the presence of S2p and N1s signals. Antiadherence and antibiofilm activities are assessed against four bacterial strains, including Gram-negative and Gram-positive bacteria. A strong activity is observed with adherence reduction factors superior to 99.98% and biofilm formation decreased by 80%. Finally, in vitro cytocompatibility tests of the antibacterial surfaces are performed with L929 murine fibroblasts and show cell viability without promoting proliferation.
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Affiliation(s)
- Carla Sardo
- Institut des Biomolécules Max Mousseron (CNRS UMR 5247), Département des Biopolymères Artificiels, UFR Pharmacie - Université Montpellier I, Université Montpellier 2-15, Avenue Charles Flahaut, 34093 Montpellier, France
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19
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Fiorica C, Palumbo FS, Pitarresi G, Giorgi M, Calascibetta F, Giammona G. In-situ forming gel-like depot of a polyaspartamide-polylactide copolymer for once a week administration of sulpiride. J Pharm Pharmacol 2014; 67:78-86. [DOI: 10.1111/jphp.12323] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 08/10/2014] [Indexed: 01/15/2023]
Abstract
Abstract
Objectives
An in-situ forming gel-like depot, prepared by using an appropriate polyaspartamide-polylactide graft copolymer, has been employed to release in a sustained way sulpiride.
Methods
α,β-poly(N-2-hydroxyethyl)-D,L-aspartamide-g-polylactic acid (PHEA-g-PLA) has been used as a polymer component. Its physicochemical properties make possible to dissolve it in N-methyl-2-pyrrolidone, with the obtainment of a solution able to form a gel-like depot once injected into a physiological medium. Cell compatibility of PHEA-g-PLA depot has been investigated, using murine dermal fibroblasts as cell model. 3-(4,5-Dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt assay and fluorescence microscopy have been employed to evaluate cell viability and morphology after contact with PHEA-g-PLA depot. Pharmacokinetic parameters of sulpiride released from depot have been determined following subcutaneous administration to rabbits and compared with corresponding parameters following administration of free sulpiride solution.
Key findings
It has been demonstrated that the system does not affect significantly the viability of fibroblasts and is able to sustain the release of sulpiride until a week, with a burst effect dependent on the initial weight ratio polymer/drug.
Conclusion
In-vivo release profiles and pharmacokinetic parameters suggest that PHEA-g-PLA depot could have interesting clinical applications for a once a week administration of poorly soluble drugs to humans or animals.
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Affiliation(s)
- Calogero Fiorica
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Palermo, Italy
| | - Fabio Salvatore Palumbo
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Palermo, Italy
| | - Giovanna Pitarresi
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Palermo, Italy
- IBIM-CNR, Palermo, Italy
| | - Mario Giorgi
- Department of Veterinary Sciences, Università degli Studi di Pisa, Pisa, Italy
| | - Filippo Calascibetta
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Palermo, Italy
| | - Gaetano Giammona
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Palermo, Italy
- Institute of Biophysics at Palermo, Italian National Research Council, Palermo, Italy
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Cavallaro G, Licciardi M, Amato G, Sardo C, Giammona G, Farra R, Dapas B, Grassi M, Grassi G. Synthesis and characterization of polyaspartamide copolymers obtained by ATRP for nucleic acid delivery. Int J Pharm 2014; 466:246-57. [DOI: 10.1016/j.ijpharm.2014.03.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/07/2014] [Accepted: 03/09/2014] [Indexed: 01/23/2023]
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21
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An allergen-polymeric nanoaggregate as a new tool for allergy vaccination. Int J Pharm 2014; 465:275-83. [DOI: 10.1016/j.ijpharm.2014.01.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 01/24/2014] [Accepted: 01/25/2014] [Indexed: 01/24/2023]
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22
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Abstract
With the high occurrence of cardiovascular disease and increasing numbers of patients requiring vascular access, there is a significant need for small-diameter (<6 mm inner diameter) vascular graft that can provide long-term patency. Despite the technological improvements, restenosis and graft thrombosis continue to hamper the success of the implants. Vascular tissue engineering is a new field that has undergone enormous growth over the last decade and has proposed valid solutions for blood vessels repair. The goal of vascular tissue engineering is to produce neovessels and neoorgan tissue from autologous cells using a biodegradable polymer as a scaffold. The most important advantage of tissue-engineered implants is that these tissues can grow, remodel, rebuild, and respond to injury. This review describes the development of polymeric materials over the years and current tissue engineering strategies for the improvement of vascular conduits.
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Cavallaro G, Triolo D, Licciardi M, Giammona G, Chirico G, Sironi L, Dacarro G, Donà A, Milanese C, Pallavicini P. Amphiphilic Copolymers Based on Poly[(hydroxyethyl)-d,l-aspartamide]: A Suitable Functional Coating for Biocompatible Gold Nanostars. Biomacromolecules 2013; 14:4260-70. [DOI: 10.1021/bm401130z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Gennara Cavallaro
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF),
Sezione di Chimica e Tecnologie Farmaceutiche, Università di Palermo, Via Archirafi, 32, 90123, Palermo, Italy
| | - Daniela Triolo
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF),
Sezione di Chimica e Tecnologie Farmaceutiche, Università di Palermo, Via Archirafi, 32, 90123, Palermo, Italy
| | - Mariano Licciardi
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF),
Sezione di Chimica e Tecnologie Farmaceutiche, Università di Palermo, Via Archirafi, 32, 90123, Palermo, Italy
| | - Gaetano Giammona
- Dipartimento
di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF),
Sezione di Chimica e Tecnologie Farmaceutiche, Università di Palermo, Via Archirafi, 32, 90123, Palermo, Italy
| | - Giuseppe Chirico
- Dipartimento
di Fisica “G. Occhialini”, Università Milano Bicocca, piazza della Scienza, 3, 20126 Milano, Italy
| | - Laura Sironi
- Dipartimento
di Fisica “G. Occhialini”, Università Milano Bicocca, piazza della Scienza, 3, 20126 Milano, Italy
| | - Giacomo Dacarro
- Dipartimento
di Chimica, Università di Pavia, viale Taramelli, 12, 27100 Pavia, Italy
| | - Alice Donà
- Dipartimento
di Chimica, Università di Pavia, viale Taramelli, 12, 27100 Pavia, Italy
| | - Chiara Milanese
- Dipartimento
di Chimica, Università di Pavia, viale Taramelli, 12, 27100 Pavia, Italy
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24
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Licciardi M, Pasut G, Amato G, Scialabba C, Mero A, Montopoli M, Cavallaro G, Schiavon O, Giammona G. PHEA-graft-polymethacrylate supramolecular aggregates for protein oral delivery. Eur J Pharm Biopharm 2013; 84:21-8. [DOI: 10.1016/j.ejpb.2012.12.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 12/03/2012] [Accepted: 12/10/2012] [Indexed: 10/27/2022]
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25
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Turco Liveri ML, Licciardi M, Sciascia L, Giammona G, Cavallaro G. Peculiar mechanism of solubilization of a sparingly water soluble drug into polymeric micelles. Kinetic and equilibrium studies. J Phys Chem B 2012; 116:5037-46. [PMID: 22462632 DOI: 10.1021/jp211973s] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Complementary kinetic and equilibrium studies on the solubilization process of the sparingly water soluble tamoxifen (TAM) drug in polymeric aqueous solutions have been performed by using the spectrophotometric method. In particular, the amphiphilic copolymers obtained by derivatization of polymeric chain of poly(N-2-hydroxyethyl)-dl-aspartamide, PHEA, with poly(ethylene glycol)s, PEG (2000 or 5000 Da), and/or hexadecylamine chain, C16, namely PHEA-PEG2000-C16, PHEA-PEG5000-C16, PHEA-C16, have been employed. Preliminary to the kinetic and equilibrium data quantitative treatment, the molar absorption coefficient of TAM in polymeric micelle aqueous solution has been determined. By these studies the solubization sites of TAM into the polymeric micelles have been determined and the solubilization mechanism has been elucidated through a nonconventional approach by considering the TAM partitioned between three pseudophases, i.e., the aqueous pseudophase, the hydrophilic corona, and the hydrophobic core. The simultaneous solution of the rate laws associated with each step of the proposed mechanism allowed the calculation of the rate constants associated with the involved processes, the values of which are independent of both the copolymer concentration and nature, with the exception of the rate of the TAM transfer from the corona to the core. This has been attributed to the steric barrier, represented by the corona, which hampers the solubilization into the core. The binding constant values of the TAM to the hydrophilic corona of the polymeric micelles, calculated through the quantitative analysis of the equilibrium data, depend on the thickness of the hydrophilic headgroup, while those of the hydrophobic core are almost independent of the copolymer type. Further confirmation to the proposed solubilization mechanism has been provided by performing the kinetic and equilibrium measurements in the presence of PHEA-PEG2000 and PHEA-PEG5000 copolymers.
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Affiliation(s)
- Maria Liria Turco Liveri
- Dipartimento di Chimica "Stanislao Cannizzaro", University of Palermo , Viale delle Scienze Ed. 17, IT 90128, Palermo, Italy
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26
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An JH, Huynh NT, Sil Jeon Y, Kim JH. Surface modification using bio-inspired adhesive polymers based on polyaspartamide derivatives. POLYM INT 2011. [DOI: 10.1002/pi.3116] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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27
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Sarpietro MG, Pitarresi G, Ottimo S, Giuffrida MC, Ognibene MC, Fiorica C, Giammona G, Castelli F. Interaction between Drug Loaded Polyaspartamide-Polylactide-Polysorbate Based Micelles and Cell Membrane Models: A Calorimetric Study. Mol Pharm 2011; 8:642-50. [DOI: 10.1021/mp100445k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maria Grazia Sarpietro
- Dipartimento di Scienze del Farmaco, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Giovanna Pitarresi
- Dipartimento di Scienze e Tecnologie Molecolari e Biomolecolari, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy
- IBIM-CNR, Via Ugo La Malfa 153, 90143 Palermo, Italy
| | - Sara Ottimo
- Dipartimento di Scienze del Farmaco, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Maria Chiara Giuffrida
- Dipartimento di Scienze del Farmaco, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Maria Chiara Ognibene
- Dipartimento di Scienze e Tecnologie Molecolari e Biomolecolari, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy
| | - Calogero Fiorica
- Dipartimento di Scienze e Tecnologie Molecolari e Biomolecolari, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy
| | - Gaetano Giammona
- Dipartimento di Scienze e Tecnologie Molecolari e Biomolecolari, Sezione di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Via Archirafi 32, 90123, Palermo, Italy
- Institute of Biophysics at Palermo, Italian National Research Council, Via Ugo La Malfa 153, 90143 Palermo, Italy
| | - Francesco Castelli
- Dipartimento di Scienze del Farmaco, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
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28
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Licciardi M, Cavallaro G, Di Stefano M, Fiorica C, Giammona G. Polyaspartamide-graft-
Polymethacrylate Nanoparticles for Doxorubicin Delivery. Macromol Biosci 2011; 11:445-54. [DOI: 10.1002/mabi.201000399] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Revised: 11/22/2010] [Indexed: 11/11/2022]
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29
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Seo K, Kim D. pH-dependent hemolysis of biocompatible imidazole-grafted polyaspartamide derivatives. Acta Biomater 2010; 6:2157-64. [PMID: 19925889 DOI: 10.1016/j.actbio.2009.11.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 10/09/2009] [Accepted: 11/11/2009] [Indexed: 11/17/2022]
Abstract
A series of novel, pH-sensitive, endosomolytic polymers based on imidazole-grafted polyaspartamide were synthesized to characterize the pH-sensitive membrane fusion properties of red blood cells and their toxicity to L929 cells. All imidazole-containing polymers exhibited strong cationic characteristics under acidic conditions, as well as a high buffering effect in the pH range 5-7. In the presence of O-(2-aminoethyl)-O'-methylpolyethylene glycol and 1-(3-aminopropyl)imidazole-grafted polyaspartamide (MPEG/API-g-PASPAM) systems red blood cells agglutinated below pH 6.5 without any hemolytic effect. The octadecylamine, O-(2-aminoethyl)-O'-methylpolyethylene glycol and 1-(3-aminopropyl)imidazole-grafted polyaspartamide (C18/MPEG/API-g-PASPAM) systems, however, displayed considerable hemolytic behavior below pH 6.5, but no hemolysis occurred above this pH. It can be concluded from these results that not only the pH-sensitive imidazole group, but also the hydrophobic octadecyl chain plays a critical role in membrane fusion. The hypothetical mechanism of this fusion involves both ionic and hydrophobic interactions between the polymers and lipid bilayers.
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Affiliation(s)
- Kwangwon Seo
- Department of Chemical Engineering, Sungkyunkwan University, 300 Chunchun-dong, Jangan-gu, Suwon, Kyungki 440-746, Republic of Korea
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30
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Moon JR, Kim JH. Biodegradable stimuli-responsive hydrogels based on amphiphilic polyaspartamides with tertiary amine pendent groups. POLYM INT 2009. [DOI: 10.1002/pi.2740] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Polyhydroxyethylaspartamide-based micelles for ocular drug delivery. Int J Pharm 2009; 378:177-86. [PMID: 19465101 DOI: 10.1016/j.ijpharm.2009.05.028] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 05/08/2009] [Accepted: 05/16/2009] [Indexed: 12/16/2022]
Abstract
In this paper three copolymers of polyhydroxyethylaspartamide (PHEA), bearing in the side chains polyethylene glycol (PEG) and/or hexadecylamine (C(16)) (PHEA-PEG, PHEA-PEG-C(16) and PHEA-C(16) respectively) have been studied as potential colloidal drug carriers for ocular drug delivery. The physical characterization of all three PHEA derivatives, using the Langmuir trough (LT) and micellar affinity capillary electrophoresis (MACE) techniques allowed to assume that whereas alone PHEA backbone is an inert polymer with respect to the interactions with lipid membranes and drug complexation, when PHEA chains are grafted with long alkyl chains like C(16) or in combination C(16) chains and hydrophilic chains like PEG, copolymers with lipid membrane interaction ability and drug complexation capability are obtained. In vitro permeability studies performed on primary cultured rabbit conjunctival and corneal epithelia cells, using PHEA-C(16) and PHEA-PEG-C(16) as micelle carriers for netilmicin sulphate, dexamethasone alcohol and dexamethasone phosphate, demonstrated that in all cases drug loaded PHEA-C(16) and PHEA-PEG-C(16) micelles provide a drug permeation across ocular epithelia greater than simple drug solutions or suspensions. In particular PHEA-PEG-C(16) acts as the best permeability enhancer in our experimental model. In vivo bioavailability studies conducted with PHEA-PEG-C(16) micelles loaded with dexamethasone alcohol, confirmed that this system also provides a drug bioavailability greater in comparison with that obtained with water suspension of the same drug after ocular administration to rabbits.
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32
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Cavallaro G, Licciardi M, Stefano MD, Pitarresi G, Giammona G. New Self-Assembling Polyaspartamide-Based Brush Copolymers Obtained by Atom Transfer Radical Polymerization. Macromolecules 2009. [DOI: 10.1021/ma8020163] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gennara Cavallaro
- Department of Chimica e Tecnologie Farmaceutiche, Laboratory of Biocompatible Polymers, University of Palermo, Via Archirafi, 32 90129 Palermo, Italy
| | - Mariano Licciardi
- Department of Chimica e Tecnologie Farmaceutiche, Laboratory of Biocompatible Polymers, University of Palermo, Via Archirafi, 32 90129 Palermo, Italy
| | - Mauro Di Stefano
- Department of Chimica e Tecnologie Farmaceutiche, Laboratory of Biocompatible Polymers, University of Palermo, Via Archirafi, 32 90129 Palermo, Italy
| | - Giovanna Pitarresi
- Department of Chimica e Tecnologie Farmaceutiche, Laboratory of Biocompatible Polymers, University of Palermo, Via Archirafi, 32 90129 Palermo, Italy
| | - Gaetano Giammona
- Department of Chimica e Tecnologie Farmaceutiche, Laboratory of Biocompatible Polymers, University of Palermo, Via Archirafi, 32 90129 Palermo, Italy
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Craparo EF, Gennara C, Chiara OM, Girolamo T, Luisa BM, Gaetano G. Amphiphilic poly(hydroxyethylaspartamide) derivative-based micelles as drug delivery systems for ferulic acid. J Drug Target 2009; 17:78-88. [DOI: 10.1080/10611860802455821] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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34
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pH-Responsive Self-Assembly and conformational transition of partially propyl-esterified poly(α,β-l-aspartic acid) as amphiphilic biodegradable polyanion. Colloids Surf B Biointerfaces 2009; 68:13-9. [DOI: 10.1016/j.colsurfb.2008.08.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Revised: 08/27/2008] [Accepted: 08/29/2008] [Indexed: 11/21/2022]
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Craparo EF, Ognibene MC, Casaletto MP, Pitarresi G, Teresi G, Giammona G. Biocompatible polymeric micelles with polysorbate 80 for use in brain targeting. NANOTECHNOLOGY 2008; 19:485603. [PMID: 21836304 DOI: 10.1088/0957-4484/19/48/485603] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this paper, the synthesis and characterization of novel amphiphilic graft copolymers based on an α,β-poly(N-2-hydroxyethyl)-D,L-aspartamide (PHEA) backbone and D,L-polylactic acid (PLA) hydrophobic side chains are reported. These copolymers were obtained starting from PHEA-ethylenediamine (PHEA-EDA), which was functionalized with polysorbate 80 (PS(80)) and/or PLA in order to obtain the PHEA-EDA-PS(80)-PLA and PHEA-EDA-PLA samples, respectively. The degrees of derivatization, DD(PS80) and DD(PLA), of PHEA-EDA-PS(80)-PLA, calculated by (1)H-NMR, resulted in being 1.2 ± 0.03 mol% and 0.54 ± 0.05 mol%, respectively, while that of PHEA-EDA-PLA was found to be 0.60 ± 0.05 mol%. Size exclusion chromatography (SEC) analysis confirmed the occurrence of derivatization, the molecular weight values being close to the theoretical ones. Polymeric micelles from PHEA-EDA-PLA and PHEA-EDA-PS(80)-PLA copolymers were obtained by using the dialysis method and were characterized in terms of mean size, zeta potential, critical aggregation concentration (CAC), and surface composition by x-ray photoelectron spectroscopy (XPS) analysis, which demonstrated the presence of PS(80) onto the PHEA-EDA-PS(80)-PLA micelle surface. In vitro experiments demonstrated that these systems had no cytotoxic effects on 16 HBE, Caco2, HuDe and K562 cell lines, and no haemolytic activity. Moreover, both PHEA-EDA-PS(80)-PLA and PHEA-EDA-PLA micelles were able to penetrate into Neuro2a cells and, in the case of PS(80) decorated micelles, to escape from phagocytosis by the J774 A1 macrophages.
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Affiliation(s)
- E F Craparo
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Università degli Studi di Palermo, Via Archirafi, 32, 90123 Palermo, Italy
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36
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Cavallaro G, Giammona G, Lombardo R, Sciascia L, Liveri MLT. Amphiphilic derivatives of a polyaspartamide: their aggregation and solubilization ability. Colloids Surf A Physicochem Eng Asp 2006. [DOI: 10.1016/j.colsurfa.2006.03.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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37
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Licciardi M, Campisi M, Cavallaro G, Carlisi B, Giammona G. Novel cationic polyaspartamide with covalently linked carboxypropyl-trimethyl ammonium chloride as a candidate vector for gene delivery. Eur Polym J 2006. [DOI: 10.1016/j.eurpolymj.2005.10.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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38
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Preparation and Properties of Novel Biodegradable Hydrogel based on Cationic Polyaspartamide Derivative. B KOREAN CHEM SOC 2006. [DOI: 10.5012/bkcs.2006.27.7.981] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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Castelli F, Messina C, Craparo EF, Mandracchia D, Pitarresi G. Evaluation of the interaction and drug release from alpha,beta-polyaspartamide derivatives to a biomembrane model. Drug Deliv 2005; 12:357-66. [PMID: 16253951 DOI: 10.1080/10717540590968404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
This article reports on a comparative study on the ability of various polymers, containing hydrophilic and/or hydrophobic groups, to interact with a biomembrane model using the differential scanning calorimetry (DSC) technique. Multilamellar vesicles of mixed dimyristoylphosphatidylcholine (DMPC) and dimyristoylphosphatidic acid (DMPA) were chosen as a model of cell membranes. The investigated samples were a water soluble polymer, the alpha,beta-poly(N-2-hydroxyethyl)-DL-aspartamide (PHEA) and its derivatives partially functionalized with polyethylene glycol (PEG2000) to obtain PHEA-PEG2000, with hexadecylamine (C16) to obtain PHEA-C16, and with both compounds to obtain PHEA-PEG2000-C16. These polymers are potential candidates to prepare drug delivery systems. In particular, some samples give rise to polymeric micelles able to entrap hydrophobic drugs in an aqueous medium. The migration of drug molecules from these micelles to DMPC/DMPA vesicles also has been evaluated by DSC analysis, by using ketoprofen as a model drug.
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Affiliation(s)
- F Castelli
- Dipartimento di Scienze Chimiche, Università di Catania, Catania, Italy
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40
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Cavallaro G, Maniscalco L, Licciardi M, Giammona G. Tamoxifen-loaded polymeric micelles: preparation, physico-chemical characterization and in vitro evaluation studies. Macromol Biosci 2004; 4:1028-38. [PMID: 15529397 DOI: 10.1002/mabi.200400089] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Several samples of polymeric micelles, formed by amphiphilic derivatives of PHEA, obtained by grafting into polymeric backbone of PEGs and/or hexadecylamine groups (PHEA-PEG-C(16) and PHEA-C(16)) and containing different amount of Tamoxifen, were prepared. All Tamoxifen-loaded polymeric micelles showed to increase drug water solubility. TEM studies provided evidence of the formation of supramolecular core/shell architectures containing drug, in the nanoscopic range and with spherical shape. Samples with different amount of encapsulated Tamoxifen were subjected to in vitro cytotoxic studies in order to evaluate the effect of Tamoxifen micellization on cell growth inhibition. All samples of Tamoxifen-loaded polymeric micelles showed a significantly higher antiproliferative activity in comparison with free drug, probably attributable to fluidification of cellular membranes, caused by amphiphilic copolymers, that allows a higher penetration of the drug into tumoral cells. To gain preliminary information about the potential use of prepared micelles as Tamoxifen drug delivery systems, studies evaluating drug release ability of micelle systems in media mimicking biological fluids (buffer solutions at pH 7.4 and 5.5) and in human plasma were carried out. These studies, performed evaluating the amount of Tamoxifen that remains in solution as a function of time, showed that at pH 7.4, as well as in plasma, PHEA-C(16) polymeric micelles were able to release lower drug amounts than PHEA-PEG(5000)-C(16) ones, while at pH 5.5, the behavior difference between two kind of micelles was less pronounced.
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Affiliation(s)
- Gennara Cavallaro
- Dipartimento di Chimica e Tecnologie Farmaceutiche, Via Archirafi 32, 90123 Palermo, Italy.
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Mourey TH. SEC Molecular-Weight-Sensitive Detection. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2004. [DOI: 10.1080/10236660490890510] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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