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Duxfield L, Sultana R, Wang R, Englebretsen V, Deo S, Swift S, Rupenthal I, Al-Kassas R. Development of gatifloxacin-loaded cationic polymeric nanoparticles for ocular drug delivery. Pharm Dev Technol 2015; 21:172-9. [PMID: 26794936 DOI: 10.3109/10837450.2015.1091839] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The present investigation aimed at improving the ocular bioavailability of gatifloxacin by prolonging its residence time in the eye and reducing problems associated with the drug re-crystallization after application through incorporation into cationic polymeric nanoparticles. Gatifloxacin-loaded nanoparticles were prepared via the nanoprecipitation and double emulsion techniques. A 50:50 Eudragit® RL and RS mixture was used as cationic polymer with other formulation parameters varied. Prepared nanoparticles were evaluated for size, zeta potential, and drug loading. An optimized formulation was selected and further characterized for in vitro drug release, cytotoxicity, and antimicrobial activity. The double emulsion method produced larger nanoparticles than the nanoprecipitation method (410 nm and 68 nm, respectively). Surfactant choice also affected particle size and zeta potential with Tween 80 producing smaller-sized particles with higher zeta potential than PVA. However, the zeta potential was positive at all experimental conditions investigated. The optimal formulation produced by double emulsion technique and has achieved 46% drug loading. This formulation had optimal physicochemical properties with acceptable cytotoxicity results, and very prolonged release rate. The particles antimicrobial activities of the selected formulation have been tested against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus and showed prolonged antimicrobial effect for gatifloxacin.
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Affiliation(s)
- Linda Duxfield
- a Faculty of Medical and Health Sciences , School of Pharmacy, The University of Auckland , Auckland , New Zealand
| | - Rubab Sultana
- a Faculty of Medical and Health Sciences , School of Pharmacy, The University of Auckland , Auckland , New Zealand
| | - Ruokai Wang
- a Faculty of Medical and Health Sciences , School of Pharmacy, The University of Auckland , Auckland , New Zealand
| | - Vanessa Englebretsen
- a Faculty of Medical and Health Sciences , School of Pharmacy, The University of Auckland , Auckland , New Zealand
| | - Samantha Deo
- a Faculty of Medical and Health Sciences , School of Pharmacy, The University of Auckland , Auckland , New Zealand
| | - Simon Swift
- c Department of Molecular Medicine and Pathology , Faculty of Medical and Health Sciences, University of Auckland , Auckland , New Zealand
| | - Ilva Rupenthal
- b Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland , Auckland , New Zealand , and
| | - Raida Al-Kassas
- a Faculty of Medical and Health Sciences , School of Pharmacy, The University of Auckland , Auckland , New Zealand
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302
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Poltorak K, Durand A, Léonard M, Six JL, Nouvel C. Interfacial click chemistry for improving both dextran shell density and stability of biocompatible nanocapsules. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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303
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Banik BL, Fattahi P, Brown JL. Polymeric nanoparticles: the future of nanomedicine. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2015; 8:271-99. [PMID: 26314803 DOI: 10.1002/wnan.1364] [Citation(s) in RCA: 229] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 07/16/2015] [Accepted: 07/22/2015] [Indexed: 12/22/2022]
Abstract
Polymeric nanoparticles (NPs) are one of the most studied organic strategies for nanomedicine. Intense interest lies in the potential of polymeric NPs to revolutionize modern medicine. To determine the ideal nanosystem for more effective and distinctly targeted delivery of therapeutic applications, particle size, morphology, material choice, and processing techniques are all research areas of interest. Utilizations of polymeric NPs include drug delivery techniques such as conjugation and entrapment of drugs, prodrugs, stimuli-responsive systems, imaging modalities, and theranostics. Cancer, neurodegenerative disorders, and cardiovascular diseases are fields impacted by NP technologies that push scientific boundaries to the leading edge of transformative advances for nanomedicine.
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Affiliation(s)
- Brittany L Banik
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Pouria Fattahi
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Justin L Brown
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, USA
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304
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Cai XJ, Yuan HM, Blencowe A, Qiao GG, Genzer J, Spontak RJ. Film-Stabilizing Attributes of Polymeric Core-Shell Nanoparticles. ACS NANO 2015; 9:7940-7949. [PMID: 26146164 DOI: 10.1021/acsnano.5b00237] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Self-organization of nanoparticles into stable, molecularly thin films provides an insightful paradigm for manipulating the manner in which materials interact at nanoscale dimensions to generate unique material assemblies at macroscopic length scales. While prior studies in this vein have focused largely on examining the performance of inorganic or organic/inorganic hybrid nanoparticles (NPs), the present work examines the stabilizing attributes of fully organic core-shell microgel (CSMG) NPs composed of a cross-linked poly(ethylene glycol dimethacrylate) (PEGDMA) core and a shell of densely grafted, but relatively short-chain, polystyrene (PS) arms. Although PS homopolymer thin films measuring from a few to many nanometers in thickness, depending on the molecular weight, typically dewet rapidly from silica supports at elevated temperatures, spin-coated CSMG NP films measuring as thin as 10 nm remain stable under identical conditions for at least 72 h. Through the use of self-assembled monolayers (SAMs) to alter the surface of a flat silica-based support, we demonstrate that such stabilization is not attributable to hydrogen bonding between the acrylic core and silica. We also document that thin NP films consisting of three or less layers (10 nm) and deposited onto SAMs can be fully dissolved even after extensive thermal treatment, whereas slightly thicker films (40 nm) on Si wafer become only partially soluble during solvent rinsing with and without sonication. Taken together, these observations indicate that the present CSMG NP films are stabilized primarily by multidirectional penetration of relatively short, unentangled NP arms caused by NP layering, rather than by chain entanglement as in linear homopolymer thin films. This nanoscale "velcro"-like mechanism permits such NP films, unlike their homopolymer counterparts of comparable chain length and thickness, to remain intact as stable, free-floating sheets on water, and thus provides a viable alternative to ultrathin organic coating strategies.
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Affiliation(s)
- Xiao-Jing Cai
- Department of Chemical & Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695-7905, United States
| | - Hao-Miao Yuan
- Department of Chemical & Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695-7905, United States
| | - Anton Blencowe
- Department of Chemical & Biomolecular Engineering, University of Melbourne , Parkville, Victoria 3010, Australia
- Mawson Institute, Division of ITEE, The University of South Australia , Mawson Lakes, South Australia 5095, Australia
| | - Greg G Qiao
- Department of Chemical & Biomolecular Engineering, University of Melbourne , Parkville, Victoria 3010, Australia
| | - Jan Genzer
- Department of Chemical & Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695-7905, United States
| | - Richard J Spontak
- Department of Chemical & Biomolecular Engineering, North Carolina State University , Raleigh, North Carolina 27695-7905, United States
- Department of Materials Science & Engineering, North Carolina State University , Raleigh, North Carolina 27695-7907, United States
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305
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Ye Z, Ji YL, Ma X, Wen JG, Wei W, Huang SM. Pharmacokinetics and distributions of bevacizumab by intravitreal injection of bevacizumab-PLGA microspheres in rabbits. Int J Ophthalmol 2015; 8:653-8. [PMID: 26309857 DOI: 10.3980/j.issn.2222-3959.2015.04.02] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 01/19/2015] [Indexed: 11/02/2022] Open
Abstract
AIM To investigate the pharmacokinetics and distributions of bevacizumab by intravitreal injection of prepared bevacizumab-poly (L-lactic-co-glycolic acid) (PLGA) microspheres in rabbits, to provide evidence for clinical application of this kind of bevacizumab sustained release dosage form. METHODS Bevacizumab was encapsulated into PLGA microsphere via the solid-in-oil-in-hydrophilic oil (S/O/hO) method. Fifteen healthy New Zealand albino-rabbits were used in experiments. The eyes of each rabbit received an intravitreal injection. The left eyes were injected with prepared bevacizumab-PLGA microspheres and the right eyes were injected with bevacizumab solution. After intravitreal injection, rabbits were randomly selected at days 3, 7, 14, 28 and 42 respectively, three animals each day. Then we used immunofluorescence staining to observe the distribution and duration of bevacizumab in rabbit eye tissues, and used the sandwich ELISA to quantify the concentration of free bevacizumab from the rabbit aqueous humor and vitreous after intravitreal injection. RESULTS The results show that the concentration of bevacizumab in vitreous and aqueous humor after administration of PLGA formulation was higher than that of bevacizumab solution. The T1/2 of intravitreal injection of bevacizumab-PLGA microspheres is 9.6d in vitreous and 10.2d in aqueous humor, and the T1/2 of intravitreal injection of soluble bevacizumab is 3.91d in vitreous and 4.1d in aqueous humor. There were statistical significant difference for comparison the results of the bevacizumab in vitreous and aqueous humor between the left and right eyes (P<0.05). The AUC0-t of the sustained release dosage form was 1-fold higher than that of the soluble form. The relative bioavailability was raised significantly. The immunofluorescence staining of PLGA-encapsulated bevacizumab (b-PLGA) in rabbit eye tissues was still observed up to 42d. It was longer than that of the soluble form. CONCLUSION The result of this study shows the beneficial effects of PLGA in prolonging the residency of bevacizumab in the vitreous. And the drug delivery system may have potential as a treatment modality for related disease.
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Affiliation(s)
- Zhuo Ye
- Department of Ophthalmology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China ; The Institute of Clinical Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, China
| | - Yan-Li Ji
- Department of Ophthalmology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China ; Department of Ophthalmology, the Second People's Hospital of Zhengzhou, Zhengzhou 450006, Henan Province, China
| | - Xiang Ma
- Department of Ophthalmology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
| | - Jian-Guo Wen
- The Institute of Clinical Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, China
| | - Wei Wei
- Department of Ophthalmology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
| | - Shu-Man Huang
- The Institute of Clinical Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450003, Henan Province, China
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306
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Szunerits S, Barras A, Khanal M, Pagneux Q, Boukherroub R. Nanostructures for the Inhibition of Viral Infections. Molecules 2015; 20:14051-81. [PMID: 26247927 PMCID: PMC6332336 DOI: 10.3390/molecules200814051] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Revised: 07/21/2015] [Accepted: 07/28/2015] [Indexed: 01/26/2023] Open
Abstract
Multivalent interactions are omnipresent in biology and confer biological systems with dramatically enhanced affinities towards different receptors. Such multivalent binding interactions have lately been considered for the development of new therapeutic strategies against bacterial and viral infections. Multivalent polymers, dendrimers, and liposomes have successfully targeted pathogenic interactions. While a high synthetic effort was often needed for the development of such therapeutics, the integration of multiple ligands onto nanostructures turned to be a viable alternative. Particles modified with multiple ligands have the additional advantage of creating a high local concentration of binding molecules. This review article will summarize the different nanoparticle-based approaches currently available for the treatment of viral infections.
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Affiliation(s)
- Sabine Szunerits
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), UMR 8520 CNRS, Lille1 University, Avenue Poincaré-BP 60069, 59652 Villeneuve d\'Ascq, France.
| | - Alexandre Barras
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), UMR 8520 CNRS, Lille1 University, Avenue Poincaré-BP 60069, 59652 Villeneuve d\'Ascq, France.
| | - Manakamana Khanal
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), UMR 8520 CNRS, Lille1 University, Avenue Poincaré-BP 60069, 59652 Villeneuve d\'Ascq, France.
| | - Quentin Pagneux
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), UMR 8520 CNRS, Lille1 University, Avenue Poincaré-BP 60069, 59652 Villeneuve d\'Ascq, France.
| | - Rabah Boukherroub
- Institute of Electronics, Microelectronics and Nanotechnology (IEMN), UMR 8520 CNRS, Lille1 University, Avenue Poincaré-BP 60069, 59652 Villeneuve d\'Ascq, France.
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307
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Viral nanoparticles, noble metal decorated viruses and their nanoconjugates. Adv Colloid Interface Sci 2015; 222:119-34. [PMID: 24836299 DOI: 10.1016/j.cis.2014.04.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 11/28/2013] [Accepted: 04/11/2014] [Indexed: 01/09/2023]
Abstract
Virus-based nanotechnology has generated interest in a number of applications due to the specificity of virus interaction with inorganic and organic nanoparticles. A well-defined structure of virus due to its multifunctional proteinaceous shell (capsid) surrounding genomic material is a promising approach to obtain nanostructured materials. Viruses hold great promise in assembling and interconnecting novel nanosized components, allowing to develop organized nanoparticle assemblies. Due to their size, monodispersity, and variety of chemical groups available for modification, they make a good scaffold for molecular assembly into nanoscale devices. Virus based nanocomposites are useful as an engineering material for the construction of smart nanoobjects because of their ability to associate into desired structures including a number of morphologies. Viruses exhibit the characteristics of an ideal template for the formation of nanoconjugates with noble metal nanoparticles. These bioinspired systems form monodispersed units that are highly amenable through genetic and chemical modifications. As nanoscale assemblies, viruses have sophisticated yet highly ordered structural features, which, in many cases, have been carefully characterized by modern structural biological methods. Plant viruses are increasingly being used for nanobiotechnology purposes because of their relative structural and chemical stability, ease of production, multifunctionality and lack of toxicity and pathogenicity in animals or humans. The multifunctional viruses interact with nanoparticles and other functional additives to the generation of bioconjugates with different properties – possible antiviral and antibacterial activities.
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308
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Fornaguera C, Feiner-Gracia N, Calderó G, García-Celma MJ, Solans C. Galantamine-loaded PLGA nanoparticles, from nano-emulsion templating, as novel advanced drug delivery systems to treat neurodegenerative diseases. NANOSCALE 2015; 7:12076-12084. [PMID: 26118655 DOI: 10.1039/c5nr03474d] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Polymeric nanoparticles could be promising drug delivery systems to treat neurodegenerative diseases. Among the various methods of nanoparticle preparation, nano-emulsion templating was used in the present study to prepare galantamine-loaded nano-emulsions by a low-energy emulsification method followed by solvent evaporation to obtain galantamine-loaded polymeric nanoparticles. This approach was found to be suitable because biocompatible, biodegradable and safe nanoparticles with appropriate features (hydrodynamic radii around 20 nm, negative surface charge and stability higher than 3 months) for their intravenous administration were obtained. Encapsulation efficiencies higher than 90 wt% were obtained with a sustained drug release profile as compared to that from aqueous and micellar solutions. The enzymatic activity of the drug was maintained at 80% after its encapsulation into nanoparticles that were non-cytotoxic at the required therapeutic concentration. Therefore, novel galantamine-loaded polymeric nanoparticles have been designed for the first time using the nano-emulsification approach and showed the appropriate features to become advanced drug delivery systems to treat neurodegenerative diseases.
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Affiliation(s)
- C Fornaguera
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Spain
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309
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Raman microscopy for cellular investigations--From single cell imaging to drug carrier uptake visualization. Adv Drug Deliv Rev 2015; 89:71-90. [PMID: 25728764 DOI: 10.1016/j.addr.2015.02.006] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 02/05/2015] [Accepted: 02/18/2015] [Indexed: 12/11/2022]
Abstract
Progress in advanced therapeutic concepts requires the development of appropriate carrier systems for intracellular drug delivery. Consequently, analysis of interaction between carriers, drugs and cells as well as their uptake and intracellular fate is a current focus of research interest. In this context, Raman spectroscopy recently became an emerging analytical technique, due to its non-destructive, chemically selective and label-free working principle. In this review, we briefly present the state-of-the-art technologies for cell visualization and drug internalization. Against this background, Raman microscopy is introduced as a versatile analytical technique. An overview of various Raman spectroscopy investigations in this field is given including interactions of cells with drug molecules, carrier systems and other nanomaterials. Further, Raman instrumentations and sample preparation methods are discussed. Finally, as the analytical limit is not reached yet, a future perspective for Raman microscopy in pharmaceutical and biomedical research on the single cell level is given.
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310
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Cortial A, Vocanson M, Loubry E, Briançon S. Hot homogenization process optimization for fragrance encapsulation in solid lipid nanoparticles. FLAVOUR FRAG J 2015. [DOI: 10.1002/ffj.3259] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Angèle Cortial
- Université de Lyon, F-69622; Lyon, France, Université Claude Bernard Lyon 1, CNRS UMR 5007, Laboratoire d'Automatique et de Génie des Procédés; France
- Université de Lyon, F-69622, Lyon, France; Université Claude Bernard Lyon 1, ENS Lyon, INSERM U1111 - CNRS UMR5308, Centre de Recherche en Infectiologie; France
| | - Marc Vocanson
- Université de Lyon, F-69622, Lyon, France; Université Claude Bernard Lyon 1, ENS Lyon, INSERM U1111 - CNRS UMR5308, Centre de Recherche en Infectiologie; France
| | - Estelle Loubry
- Université de Lyon, F-69622; Lyon, France, Université Claude Bernard Lyon 1, CNRS UMR 5007, Laboratoire d'Automatique et de Génie des Procédés; France
| | - Stéphanie Briançon
- Université de Lyon, F-69622; Lyon, France, Université Claude Bernard Lyon 1, CNRS UMR 5007, Laboratoire d'Automatique et de Génie des Procédés; France
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311
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Cordenonsi LM, Bromberger NG, Raffin RP, Scherman EE. Simultaneous separation and sensitive detection of naringin and naringenin in nanoparticles by chromatographic method indicating stability and photodegradation kinetics. Biomed Chromatogr 2015; 30:155-62. [PMID: 26053258 DOI: 10.1002/bmc.3531] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 04/29/2015] [Accepted: 05/31/2015] [Indexed: 11/10/2022]
Abstract
A simple, sensitive, precise and linear method by liquid chromatography was established for simultaneous determination and quantification of naringin and naringenin in polymeric nanoparticles. The method results in excellent separation in <11 min and with a peak purity of both flavonoids. The analyses were performed using a C18 column (4.6 × 150 mm, 5 µm), at a 1 mL/min flow rate. The mobile phase consisted of a gradient of acetonitrile-water (pH 4.0; v/v) at a temperature of 25°C. The nanoparticles were prepared according to the method of interfacial deposition of a pre-formed polymer. The method were validated in compliance with guidelines, and was found to be linear in the 1-40 µg/mL concentration range for both naringin and naringenin (r > 0.99). Repeatability was determined at three concentration levels, obtaining an RSD (%) <0.9%, and the accuracy of the method was >98%. The photodegradation kinetics was determined for naringin; the coefficient that best represents degradation was of first order and naringenin presented a zero-order kinetics. To our knowledge, a rapid and sensitive method for naringin and naringenin in polymeric nanoparticles has not been published elsewhere and this method is applicable to simultaneous evaluation of flavonoids.
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Affiliation(s)
- Leticia Malgarim Cordenonsi
- Programa de Pós Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, 90610-000, Porto Alegre, RS, Brazil
| | - Nathany Genro Bromberger
- Programa de Pós Graduação em Nanociências, Centro Universitário Franciscano, 97010-032, Santa Maria, RS, Brazil
| | - Renata Platcheck Raffin
- Programa de Pós Graduação em Nanociências, Centro Universitário Franciscano, 97010-032, Santa Maria, RS, Brazil
| | - Elfrides Eva Scherman
- Programa de Pós Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, 90610-000, Porto Alegre, RS, Brazil
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312
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Constantin M, Asmarandei I, Filimon A, Fundueanu G. Synthesis, characterization, and solution behavior of pullulan functionalized with tertiary amino groups. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315584182] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The synthesis of cationic amphiphilic pullulan having dimethylaminopropyl groups was performed in dimethyl sulfoxide using N, N′-carbonyldiimidazole as activator. The pullulan derivatives with three different substitution degrees were characterized by FTIR, 1H and 13C NMR, elemental analysis, and conductometric titrations. The aggregates characteristics were determined by steady-state fluorescence (critical aggregation concentration and polarity) and capillary viscometry measurements. Their behavior in aqueous dilute and semidilute solutions was investigated by viscosimetric experiments and fluorescence technique over the concentration range of 0.01–10 g dL−1, as a function of the degree of substitution with pendant groups. Intrinsic viscosity determined using Wolf equations provided information on the conformation of polymer chains. The results highlight the appearance of intramolecular and intermolecular aggregates and the dependence of their characteristics on the degree of substitution with pendant groups.
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Affiliation(s)
| | | | - Anca Filimon
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
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313
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Optimization and preparation of nanocapsules for food applications using two methodologies. Food Chem 2015; 179:26-34. [DOI: 10.1016/j.foodchem.2015.01.115] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 01/22/2015] [Accepted: 01/24/2015] [Indexed: 11/23/2022]
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314
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Jindal AB, Devarajan PV. Asymmetric lipid–polymer particles (LIPOMER) by modified nanoprecipitation: role of non-solvent composition. Int J Pharm 2015; 489:246-51. [DOI: 10.1016/j.ijpharm.2015.04.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/23/2015] [Accepted: 04/25/2015] [Indexed: 01/20/2023]
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315
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Stolzoff M, Ekladious I, Colby AH, Colson YL, Porter TM, Grinstaff MW. Synthesis and Characterization of Hybrid Polymer/Lipid Expansile Nanoparticles: Imparting Surface Functionality for Targeting and Stability. Biomacromolecules 2015; 16:1958-66. [PMID: 26053219 DOI: 10.1021/acs.biomac.5b00336] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The size, drug loading, drug release kinetics, localization, biodistribution, and stability of a given polymeric nanoparticle (NP) system depend on the composition of the NP core as well as its surface properties. In this study, novel, pH-responsive, and lipid-coated NPs, which expand in size from a diameter of approximately 100 to 1000 nm in the presence of a mildly acidic pH environment, are synthesized and characterized. Specifically, a combined miniemulsion and free-radical polymerization method is used to prepare the NPs in the presence of PEGylated lipids. These PEGylated-lipid expansile NPs (PEG-L-eNPs) combine the swelling behavior of the polymeric core of expansile NPs with the improved colloidal stability and surface functionality of PEGylated liposomes. The surface functionality of PEG-L-eNPs allows for the incorporation of folic acid (FA) and folate receptor-targeting. The resulting hybrid polymer/lipid nanocarriers, FA-PEG-L-eNPs, exhibit greater in vitro uptake and potency when loaded with paclitaxel compared to nontargeted PEG-L-eNPs.
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Affiliation(s)
| | | | | | - Yolonda L Colson
- §Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
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316
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Fornaguera C, Dols-Perez A, Calderó G, García-Celma MJ, Camarasa J, Solans C. PLGA nanoparticles prepared by nano-emulsion templating using low-energy methods as efficient nanocarriers for drug delivery across the blood-brain barrier. J Control Release 2015; 211:134-43. [PMID: 26057857 DOI: 10.1016/j.jconrel.2015.06.002] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 05/29/2015] [Accepted: 06/01/2015] [Indexed: 12/11/2022]
Abstract
Neurodegenerative diseases have an increased prevalence and incidence nowadays, mainly due to aging of the population. In addition, current treatments lack efficacy, mostly due to the presence of the blood-brain barrier (BBB) that limits the penetration of the drugs to the central nervous system. Therefore, novel drug delivery systems are required. Polymeric nanoparticles have been reported to be appropriate for this purpose. Specifically, the use of poly-(lactic-co-glycolic acid) (PLGA) seems to be advantageous due to its biocompatibility and biodegradability that ensure safe therapies. In this work, a novel approximation to develop loperamide-loaded nanoparticles is presented: their preparation by nano-emulsion templating using a low-energy method (the phase inversion composition, PIC, method). This nano-emulsification approach is a simple and very versatile technology, which allows a precise size control and it can be performed at mild process conditions. Drug-loaded PLGA nanoparticles were obtained using safe components by solvent evaporation of template nano-emulsions. Characterization of PLGA nanoparticles was performed, together with the study of the BBB crossing. The in vivo results of measuring the analgesic effect using the hot-plate test evidenced that the designed PLGA loperamide-loaded nanoparticles are able to efficiently cross the BBB, with high crossing efficiencies when their surface is functionalized with an active targeting moiety (a monoclonal antibody against the transferrin receptor). These results, together with the nanoparticle characterization performed here are expected to provide sufficient evidences to end up to clinical trials in the near future.
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Affiliation(s)
- C Fornaguera
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26 Barcelona, Spain; CIBER of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain.
| | - A Dols-Perez
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26 Barcelona, Spain; CIBER of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - G Calderó
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26 Barcelona, Spain; CIBER of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
| | - M J García-Celma
- CIBER of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain; Department of Pharmacy and Pharmaceutical Technology, University of Barcelona, Av/ Joan XXIII s/n, 08028 Barcelona, Spain
| | - J Camarasa
- Department of Pharmacology and Therapeutic Chemistry (Pharmacology Section), University of Barcelona, Av/ Joan XXIII s/n, 08028 Barcelona, Spain
| | - C Solans
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26 Barcelona, Spain; CIBER of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Barcelona, Spain
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317
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Su CW, Chiang CS, Li WM, Hu SH, Chen SY. Multifunctional nanocarriers for simultaneous encapsulation of hydrophobic and hydrophilic drugs in cancer treatment. Nanomedicine (Lond) 2015; 9:1499-515. [PMID: 25253498 DOI: 10.2217/nnm.14.97] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Combination therapy for cancer patients is an important standard of care protocol because it can elicit synergistic therapeutic effects and reduce systemic toxicity by simultaneously modulating multiple cell-signaling pathways and overcoming multidrug resistance. Nanocarriers are expected to play a major role in delivering multiple drugs to tumor tissues by overcoming biological barriers. However, especially considering the different physical chemistry of chemotherapeutic drugs, it is highly desirable to develop a codelivery nanocarrier for controlled and targeted delivery of both hydrophobic and hydrophilic drugs. This review reports the recent developments in various combinational drug delivery systems and the simultaneous use of combinational drug delivery systems with functional agents.
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Affiliation(s)
- Chia-Wei Su
- Department of Materials Science & Engineering, National Chiao Tung University, Hsinchu, Taiwan
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318
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Mackenzie R, Booth J, Alexander C, Garnett MC, Laughton CA. Multiscale Modeling of Drug–Polymer Nanoparticle Assembly Identifies Parameters Influencing Drug Encapsulation Efficiency. J Chem Theory Comput 2015; 11:2705-13. [DOI: 10.1021/ct501152a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
| | - J. Booth
- Pharmaceutical
Development, AstraZeneca, Macclesfield SK10 2NA, United Kingdom
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319
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Kumar A, Lale SV, Mahajan S, Choudhary V, Koul V. ROP and ATRP Fabricated Dual Targeted Redox Sensitive Polymersomes Based on pPEGMA-PCL-ss-PCL-pPEGMA Triblock Copolymers for Breast Cancer Therapeutics. ACS APPLIED MATERIALS & INTERFACES 2015; 7:9211-9227. [PMID: 25838044 DOI: 10.1021/acsami.5b01731] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To minimize cardiotoxicity and to increase the bioavailability of doxorubicin, polymersomes based on redox sensitive amphiphilic triblock copolymer poly(polyethylene glycol methacrylate)-poly(caprolactone)-s-s-poly(caprolactone)-poly(polyethylene glycol methacrylate) (pPEGMA-PCL-ss-PCL-pPEGMA) with disulfide linkage were designed and developed. The polymers were synthesized by ring opening polymerization (ROP) of ε-caprolactone followed by atom transfer radical polymerization (ATRP) of PEGMA. The triblock copolymers demonstrated various types of nanoparticle morphologies by varying hydrophobic/hydrophilic content of polymer blocks, with PEGMA content of ∼18% in the triblock copolymer leading to the formation of polymersomes in the size range ∼150 nm. High doxorubicin loading content of ∼21% was achieved in the polymersomes. Disulfide linkages were incorporated in the polymeric backbone to facilitate degradation of the nanoparticles by the intracellular tripeptide glutathione (GSH), leading to intracellular drug release. Release studies showed ∼59% drug release in pH 5.5 in the presence of 10 mM GSH, whereas only ∼19% was released in pH 7.4. In cellular uptake studies, dual targeted polymersomes showed ∼22-fold increase in cellular uptake efficiency in breast cancer cell lines (BT474 and MCF-7) as compared to nontargeted polymersomes with higher apoptosis rates. In vivo studies on Ehrlich's ascites tumor (EAT) bearing Swiss albino mouse model showed ∼85% tumor regression as compared to free doxorubicin (∼42%) without any significant cardiotoxicity associated with doxorubicin. The results indicate enhanced antitumor efficacy of the redox sensitive biocompatible nanosystem and shows promise as a potential drug nanocarrier in cancer therapeutics.
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Affiliation(s)
- Arun Kumar
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
| | - Shantanu V Lale
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
| | - Shveta Mahajan
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
| | | | - Veena Koul
- §Biomedical Engineering Unit, All India Institute of Medical Sciences, AIIMS, New Delhi 110029, India
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320
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Beck-Broichsitter M, Nicolas J, Couvreur P. Solvent selection causes remarkable shifts of the "Ouzo region" for poly(lactide-co-glycolide) nanoparticles prepared by nanoprecipitation. NANOSCALE 2015; 7:9215-9221. [PMID: 25924854 DOI: 10.1039/c5nr01695a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Polymer nanoparticles (NPs) offer versatile novel biological features of interest for drug delivery applications. "Ouzo diagrams" allowed for a systematic manufacture of specified colloidal formulations by the widely used nanoprecipitation process. Surprisingly, despite the well-documented relevance of the applied organic solvent for nanoprecipitation, its effect on the actual status of the "Ouzo region" was so far not studied. Herein, investigations were undertaken to account for the potential impact of the solvent type on the "Ouzo diagrams" for poly(lactide-co-glycolide) (PLGA) and tetrahydrofuran (THF), 1,4-dioxane, acetone and dimethyl sulfoxide (DMSO). The "Ouzo region" shifted considerably to higher polymer fractions upon solvent change (rank order: THF < 1,4-dioxane < acetone < DMSO). Assuming a one-to-one transformation of detached PLGA-bearing solvent droplets (droplet diameter for THF: ∼800 nm, 1,4-dioxane: ∼700 nm, acetone: ∼500 nm and DMSO: ∼300 nm) into non-divisible polymer aggregates upon solvent displacement, facilitated to predict the size of NPs found within the "Ouzo region" (size range: 40-200 nm). In conclusion, application of "Ouzo diagrams" is a valuable tool for drug delivery research and will most-likely replace the "trial-and-error"-approach to identify the operating window for the production of stable colloidal formulations by the nanoprecipitation technique.
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Affiliation(s)
- Moritz Beck-Broichsitter
- Institut Galien Paris-Sud, CNRS UMR 8612, University of Paris-Sud, F-92196, Châtenay-Malabry Cedex, France.
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321
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Mørch Ý, Hansen R, Berg S, Åslund AKO, Glomm WR, Eggen S, Schmid R, Johnsen H, Kubowicz S, Snipstad S, Sulheim E, Hak S, Singh G, McDonagh BH, Blom H, de Lange Davies C, Stenstad PM. Nanoparticle-stabilized microbubbles for multimodal imaging and drug delivery. CONTRAST MEDIA & MOLECULAR IMAGING 2015; 10:356-66. [DOI: 10.1002/cmmi.1639] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 02/06/2015] [Accepted: 02/13/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Ýrr Mørch
- SINTEF Materials and Chemistry; P.O. Box 4760 Sluppen 7465 Trondheim Norway
| | - Rune Hansen
- SINTEF Technology and Society; P.O. Box 4760 Sluppen 7465 Trondheim Norway
| | - Sigrid Berg
- SINTEF Technology and Society; P.O. Box 4760 Sluppen 7465 Trondheim Norway
| | - Andreas K. O. Åslund
- Department of Physics; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Wilhelm R. Glomm
- SINTEF Materials and Chemistry; P.O. Box 4760 Sluppen 7465 Trondheim Norway
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Siv Eggen
- Department of Physics; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Ruth Schmid
- SINTEF Materials and Chemistry; P.O. Box 4760 Sluppen 7465 Trondheim Norway
| | - Heidi Johnsen
- SINTEF Materials and Chemistry; P.O. Box 4760 Sluppen 7465 Trondheim Norway
| | - Stephan Kubowicz
- SINTEF Materials and Chemistry; P.O. Box 4760 Sluppen 7465 Trondheim Norway
| | - Sofie Snipstad
- Department of Physics; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Einar Sulheim
- Department of Physics; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Sjoerd Hak
- Department of Physics; Norwegian University of Science and Technology; 7491 Trondheim Norway
- Department of Circulation and Medical Imaging; Norwegian University of Science and Technology; 7030 Trondheim Norway
| | - Gurvinder Singh
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Birgitte H. McDonagh
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Hans Blom
- Science for Life Laboratory; Box 1031 17121 Solna Sweden
| | | | - Per M. Stenstad
- SINTEF Materials and Chemistry; P.O. Box 4760 Sluppen 7465 Trondheim Norway
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322
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Fornaguera C, Calderó G, Mitjans M, Vinardell MP, Solans C, Vauthier C. Interactions of PLGA nanoparticles with blood components: protein adsorption, coagulation, activation of the complement system and hemolysis studies. NANOSCALE 2015; 7:6045-58. [PMID: 25766431 DOI: 10.1039/c5nr00733j] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The intravenous administration of poly(lactic-co-glycolic) acid (PLGA) nanoparticles has been widely reported as a promising alternative for delivery of drugs to specific cells. However, studies on their interaction with diverse blood components using different techniques are still lacking. Therefore, in the present work, the interaction of PLGA nanoparticles with blood components was described using different complementary techniques. The influence of different encapsulated compounds/functionalizing agents on these interactions was also reported. It is worth noting that all these techniques can be simply performed, without the need for highly sophisticated apparatus or skills. Moreover, their transference to industries and application of quality control could be easily performed. Serum albumin was adsorbed onto all types of tested nanoparticles. The saturation concentration was dependent on the nanoparticle size. In contrast, fibrinogen aggregation was dependent on nanoparticle surface charge. The complement activation was also influenced by the nanoparticle functionalization; the presence of a functionalizing agent increased complement activation, while the addition of an encapsulated compound only caused a slight increase. None of the nanoparticles influenced the coagulation cascade at low concentrations. However, at high concentrations, cationized nanoparticles did activate the coagulation cascade. Interactions of nanoparticles with erythrocytes did not reveal any hemolysis. Interactions of PLGA nanoparticles with blood proteins depended both on the nanoparticle properties and the protein studied. Independent of their loading/surface functionalization, PLGA nanoparticles did not influence the coagulation cascade and did not induce hemolysis of erythrocytes; they could be defined as safe concerning induction of embolization and cell lysis.
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Affiliation(s)
- Cristina Fornaguera
- Institute of Advanced Chemistry of Catalonia IQAC/CSIC and CIBER of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), C/Jordi Girona, 18-26, Barcelona, 08034, Spain.
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323
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Beck-Broichsitter M, Nicolas J, Couvreur P. Design attributes of long-circulating polymeric drug delivery vehicles. Eur J Pharm Biopharm 2015; 97:304-17. [PMID: 25857838 DOI: 10.1016/j.ejpb.2015.03.033] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 03/11/2015] [Accepted: 03/23/2015] [Indexed: 02/03/2023]
Abstract
Following systemic administration polymeric drug delivery vehicles allow for a controlled and targeted release of the encapsulated medication at the desired site of action. For an elevated and organ specific accumulation of their cargo, nanocarriers need to avoid opsonization, activation of the complement system and uptake by macrophages of the mononuclear phagocyte system. In this respect, camouflaged vehicles revealed a delayed elimination from systemic circulation and an improved target organ deposition. For instance, a steric shielding of the carrier surface by poly(ethylene glycol) substantially decreased interactions with the biological environment. However, recent studies disclosed possible deficits of this approach, where most notably, poly(ethylene glycol)-modified drug delivery vehicles caused significant immune responses. At present, identification of novel potential carrier coating strategies facilitating negligible immune reactions is an emerging field of interest in drug delivery research. Moreover, physical carrier properties including geometry and elasticity seem to be very promising design attributes to surpass numerous biological barriers, in order to improve the efficacy of the delivered medication.
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Affiliation(s)
- Moritz Beck-Broichsitter
- Institut Galien UMR CNRS 8612, Faculté de Pharmacie, Université Paris-Sud XI, Châtenay-Malabry, France
| | - Julien Nicolas
- Institut Galien UMR CNRS 8612, Faculté de Pharmacie, Université Paris-Sud XI, Châtenay-Malabry, France
| | - Patrick Couvreur
- Institut Galien UMR CNRS 8612, Faculté de Pharmacie, Université Paris-Sud XI, Châtenay-Malabry, France.
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324
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Schiller S, Hanefeld A, Schneider M, Lehr CM. Focused Ultrasound as a Scalable and Contact-Free Method to Manufacture Protein-Loaded PLGA Nanoparticles. Pharm Res 2015; 32:2995-3006. [DOI: 10.1007/s11095-015-1681-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 03/18/2015] [Indexed: 10/23/2022]
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325
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Ahmed KK, Geary SM, Salem AK. Applying biodegradable particles to enhance cancer vaccine efficacy. Immunol Res 2015; 59:220-8. [PMID: 24838147 DOI: 10.1007/s12026-014-8537-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
One of the primary goals of our group and our collaborators here at the University of Iowa is to develop therapeutic cancer vaccines using biodegradable and biocompatible polymer-based vectors. A major advantage of using discretely packaged immunogenic cargo over non-encapsulated vaccines is that they promote enhanced cellular immunity, a key requirement in achieving antitumor activity. We discuss the importance of co-encapsulation of tumor antigen and adjuvant, with specific focus on the synthetic oligonucleotide adjuvant, cytosine-phosphate-guanine oligodeoxynucleotides. We also discuss our research using a variety of polymers including poly(α-hydroxy acids) and polyanhydrides, with the aim of determining the effect that parameters, such as size and polymer type, can have on prophylactic and therapeutic tumor vaccine formulation efficacy. Aside from their role as vaccine vectors per se, we also address the research currently underway in our group that utilizes more novel applications of biodegradable polymer-based particles in facilitating other types of immune-based therapies.
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Affiliation(s)
- Kawther K Ahmed
- Division of Pharmaceutics and Translational Therapeutics, College of Pharmacy, University of Iowa, Iowa City, IA, 52242, USA
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326
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Ikoba U, Peng H, Li H, Miller C, Yu C, Wang Q. Nanocarriers in therapy of infectious and inflammatory diseases. NANOSCALE 2015; 7:4291-305. [PMID: 25680099 DOI: 10.1039/c4nr07682f] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Nanotechnology is a growing science that has applications in various areas of medicine. The composition of nanocarriers for drug delivery is critical to guarantee high therapeutic performance when targeting specific host sites. Applications of nanotechnology are prevalent in the diagnosis and treatment of infectious and inflammatory diseases. This review summarizes recent advancements in the application of nanotechnology to the therapy of infectious and inflammatory diseases. The major focus is on the design and fabrication of various nanomaterials, characteristics and physicochemical properties of drug-loaded nanocarriers, and the use of these nanoscale drug delivery systems in treating infectious and inflammatory diseases, such as AIDS, hepatitis, tuberculosis, melanoma, and representative inflammatory diseases. Clinical trials and future perspective of the use of nanocarriers are also discussed in detail. We hope that such a review will be valuable to researchers who are exploring nanoscale drug delivery systems for the treatment of specific infectious and inflammatory diseases.
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Affiliation(s)
- Ufuoma Ikoba
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011, USA.
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327
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Yousaf AM, Kim DW, Oh YK, Yong CS, Kim JO, Choi HG. Enhanced oral bioavailability of fenofibrate using polymeric nanoparticulated systems: physicochemical characterization and in vivo investigation. Int J Nanomedicine 2015; 10:1819-30. [PMID: 25784807 PMCID: PMC4356686 DOI: 10.2147/ijn.s78895] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background The intention of this research was to prepare and compare various solubility-enhancing nanoparticulated systems in order to select a nanoparticulated formulation with the most improved oral bioavailability of poorly water-soluble fenofibrate. Methods The most appropriate excipients for different nanoparticulated preparations were selected by determining the drug solubility in 1% (w/v) aqueous solutions of each carrier. The polyvinylpyrrolidone (PVP) nanospheres, hydroxypropyl-β-cyclodextrin (HP-β-CD) nanocorpuscles, and gelatin nanocapsules were formulated as fenofibrate/PVP/sodium lauryl sulfate (SLS), fenofibrate/HP-β-CD, and fenofibrate/gelatin at the optimized weight ratios of 2.5:4.5:1, 1:4, and 1:8, respectively. The three solid-state products were achieved using the solvent-evaporation method through the spray-drying technique. The physicochemical characterization of these nanoparticles was accomplished by powder X-ray diffraction, differential scanning calorimetry, scanning electron microscopy, and Fourier-transform infrared spectroscopy. Their physicochemical properties, aqueous solubility, dissolution rate, and pharmacokinetics in rats were investigated in comparison with the drug powder. Results Among the tested carriers, PVP, HP-β-CD, gelatin, and SLS showed better solubility and were selected as the most appropriate constituents for various nanoparticulated systems. All of the formulations significantly improved the aqueous solubility, dissolution rate, and oral bioavailability of fenofibrate compared to the drug powder. The drug was present in the amorphous form in HP-β-CD nanocorpuscles; however, in other formulations, it existed in the crystalline state with a reduced intensity. The aqueous solubility and dissolution rates of the nanoparticles (after 30 minutes) were not significantly different from one another. Among the nanoparticulated systems tested in this study, the initial dissolution rates (up to 10 minutes) were higher with the PVP nanospheres and HP-β-CD nanocorpuscles; however, neither of them resulted in the highest oral bioavailability. Irrespective of relatively retarded dissolution rate, gelatin nanocapsules showed the highest apparent aqueous solubility and furnished the most improved oral bioavailability of the drug (~5.5-fold), owing to better wetting and diminution in crystallinity. Conclusion Fenofibrate-loaded gelatin nanocapsules prepared using the solvent-evaporation method through the spray-drying technique could be a potential oral pharmaceutical product for administering the poorly water-soluble fenofibrate with an enhanced bioavailability.
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Affiliation(s)
- Abid Mehmood Yousaf
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, South Korea
| | - Dong Wuk Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, South Korea
| | - Yu-Kyoung Oh
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Chul Soon Yong
- College of Pharmacy, Yeungnam University, Gyongsan, South Korea
| | - Jong Oh Kim
- College of Pharmacy, Yeungnam University, Gyongsan, South Korea
| | - Han-Gon Choi
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, South Korea
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328
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Shen L, Zhou J, Wang Y, Kang N, Ke X, Bi S, Ren L. Efficient encapsulation of Fe₃O₄ nanoparticles into genetically engineered hepatitis B core virus-like particles through a specific interaction for potential bioapplications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1190-1196. [PMID: 25155647 DOI: 10.1002/smll.201401952] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 07/23/2014] [Indexed: 06/03/2023]
Abstract
Self-assembly of viral coating proteins encapsulating functional nanoparticles provides a new class of biomaterials with robust chemical and physical properties for potential applications in functional imaging, and therapeutic or diagnostic agent delivery. Herein, a straightforward method is demonstrated for efficient encapsidation of magnetic nanoparticles into the engineered virus-like particle (VLP) through the affinity of histidine tags for the nickel- nitrilotriacetic acid (NTA) chelate. Monodispersed, uniformly sized, magnetic core-containing VLPs are obtained at high efficiency (>85%) and used as the cellular T2 contrast agents for MR imaging applications thanks to their biocompatibility, higher cellular uptake, as well as higher r2 values.
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Affiliation(s)
- Lihua Shen
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, P.R. China
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329
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Self-assembled nanoparticles of acetylated cashew gum: Characterization and evaluation as potential drug carrier. Carbohydr Polym 2015; 117:610-615. [DOI: 10.1016/j.carbpol.2014.09.087] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 11/22/2022]
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330
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Hughes JM, Budd PM, Grieve A, Dutta P, Tiede K, Lewis J. Highly monodisperse, lanthanide-containing polystyrene nanoparticles as potential standard reference materials for environmental “nano” fate analysis. J Appl Polym Sci 2015. [DOI: 10.1002/app.42061] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jonathan M. Hughes
- School of Chemistry; University of Manchester; Manchester M13 9PL United Kingdom
| | - Peter M. Budd
- School of Chemistry; University of Manchester; Manchester M13 9PL United Kingdom
| | - Andrew Grieve
- Food and Environment Research Agency (Fera); Sand Hutton York YO41 1LZ United Kingdom
| | - Pranab Dutta
- Department of Plant Pathology; Assam Agricultural University; Jorhat 785013 Assam India
| | - Karen Tiede
- Food and Environment Research Agency (Fera); Sand Hutton York YO41 1LZ United Kingdom
| | - John Lewis
- Food and Environment Research Agency (Fera); Sand Hutton York YO41 1LZ United Kingdom
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331
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Rodrigues S, Cordeiro C, Seijo B, Remuñán-López C, Grenha A. Hybrid nanosystems based on natural polymers as protein carriers for respiratory delivery: Stability and toxicological evaluation. Carbohydr Polym 2015; 123:369-80. [PMID: 25843870 DOI: 10.1016/j.carbpol.2015.01.048] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/27/2014] [Accepted: 01/21/2015] [Indexed: 12/15/2022]
Abstract
Chitosan/carrageenan/tripolyphosphate nanoparticles were previously presented as holding potential for an application in transmucosal delivery of macromolecules, with tripolyphosphate demonstrating to contribute for both size reduction and stabilisation of the nanoparticles. This work was aimed at evaluating the capacity of the nanoparticles as protein carriers for pulmonary and nasal transmucosal delivery, further assessing their biocompatibility pattern regarding that application. Nanoparticles demonstrated stability in presence of lysozyme, while freeze-drying was shown to preserve their characteristics when glucose or sucrose were used as cryoprotectants. Bovine serum albumin was associated to the nanoparticles, which were successfully microencapsulated by spray-drying to meet the aerodynamic requirements inherent to pulmonary delivery. Finally, a satisfactory biocompatibility profile was demonstrated upon exposure of two respiratory cell lines (Calu-3 and A549 cells) to the carriers. A negligible effect on cell viability along with no alterations on transepithelial electrical resistance and no induction of inflammatory response were observed.
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Affiliation(s)
- Susana Rodrigues
- CBME - Centre for Molecular and Structural Biomedicine/IBB - Institute for Biotechnology and Bioengineering, University of Algarve, Faculty of Sciences and Technology, Campus de Gambelas, 8005-139 Faro, Portugal.
| | - Clara Cordeiro
- Faculty of Sciences and Technology, University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; CEAUL - Center of Statistics and Applications, Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisboa, Portugal; CESUAlg - Centre for Research and Development in Health, University of Algarve, Portugal.
| | - Begoña Seijo
- NanoBioFar Group, Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain.
| | - Carmen Remuñán-López
- NanoBioFar Group, Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain.
| | - Ana Grenha
- CBME - Centre for Molecular and Structural Biomedicine/IBB - Institute for Biotechnology and Bioengineering, University of Algarve, Faculty of Sciences and Technology, Campus de Gambelas, 8005-139 Faro, Portugal.
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332
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Kinetics of formation of polysaccharide-covered micrometric oil droplets under mechanical agitation. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.10.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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333
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Pližingrová E, Volfová L, Svora P, Labhsetwar NK, Klementová M, Szatmáry L, Šubrt J. Highly photoactive anatase foams prepared from lyophilized aqueous colloids of peroxo-polytitanic acid. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.04.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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334
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Improving drug biological effects by encapsulation into polymeric nanocapsules. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2015; 7:623-39. [DOI: 10.1002/wnan.1334] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 12/10/2014] [Accepted: 12/15/2014] [Indexed: 12/11/2022]
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335
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Wang T, Zhu D, Liu G, Tao W, Cao W, Zhang L, Wang L, Chen H, Mei L, Huang L, Zeng X. DTX-loaded star-shaped TAPP-PLA-b-TPGS nanoparticles for cancer chemical and photodynamic combination therapy. RSC Adv 2015. [DOI: 10.1039/c5ra09042c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel star-shaped copolymer TAPP-PLA-b-TPGS was synthesized as drug nanocarriers for cancer chemical and photodynamic combination therapy.
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336
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Ray PZ, Shipley HJ. Inorganic nano-adsorbents for the removal of heavy metals and arsenic: a review. RSC Adv 2015. [DOI: 10.1039/c5ra02714d] [Citation(s) in RCA: 278] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Schematic of inorganic adsorbents (INA) for heavy metal removal.
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Affiliation(s)
| | - Heather J. Shipley
- University of Texas-San Antonio
- Dept. of Civil and Environmental Engineering
- San Antonio
- USA
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337
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Carbone C, Musumeci T, Lauro M, Puglisi G. Eco-friendly aqueous core surface-modified nanocapsules. Colloids Surf B Biointerfaces 2015; 125:190-6. [DOI: 10.1016/j.colsurfb.2014.11.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 11/21/2014] [Accepted: 11/24/2014] [Indexed: 12/15/2022]
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338
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Fornaguera C, Llinàs M, Solans C, Calderó G. Design and in vitro evaluation of biocompatible dexamethasone-loaded nanoparticle dispersions, obtained from nano-emulsions, for inhalatory therapy. Colloids Surf B Biointerfaces 2015; 125:58-64. [DOI: 10.1016/j.colsurfb.2014.11.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 10/27/2014] [Accepted: 11/05/2014] [Indexed: 11/28/2022]
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339
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Micro and nano polycaprolactone particles preparation by pulsed back-and-forward cross-flow batch membrane emulsification for parenteral administration. Int J Pharm 2014; 477:344-50. [DOI: 10.1016/j.ijpharm.2014.10.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 10/20/2014] [Accepted: 10/21/2014] [Indexed: 10/24/2022]
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340
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Mucoadhesive polymers in the design of nano-drug delivery systems for administration by non-parenteral routes: A review. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2014.07.010] [Citation(s) in RCA: 333] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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341
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Robin MP, O'Reilly RK. Strategies for preparing fluorescently labelled polymer nanoparticles. POLYM INT 2014. [DOI: 10.1002/pi.4842] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mathew P Robin
- Department of Chemistry University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | - Rachel K O'Reilly
- Department of Chemistry University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
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342
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Lapi AM, Altomare A, Chiellini F, Solaro R. Poly(ethylene glycol) derivatives containing periodic side-chain carboxyl groups: synthesis and characterization. POLYM INT 2014. [DOI: 10.1002/pi.4827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna Maria Lapi
- Department of Chemistry and Industrial Chemistry; University of Pisa; G. Moruzzi 3 56124 Pisa Italy
| | - Angelina Altomare
- Department of Chemistry and Industrial Chemistry; University of Pisa; G. Moruzzi 3 56124 Pisa Italy
| | - Federica Chiellini
- Department of Chemistry and Industrial Chemistry; University of Pisa; G. Moruzzi 3 56124 Pisa Italy
| | - Roberto Solaro
- Department of Chemistry and Industrial Chemistry; University of Pisa; G. Moruzzi 3 56124 Pisa Italy
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343
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Fornaguera C, Grijalvo S, Galán M, Fuentes-Paniagua E, de la Mata FJ, Gómez R, Eritja R, Calderó G, Solans C. Novel non-viral gene delivery systems composed of carbosilane dendron functionalized nanoparticles prepared from nano-emulsions as non-viral carriers for antisense oligonucleotides. Int J Pharm 2014; 478:113-123. [PMID: 25448573 DOI: 10.1016/j.ijpharm.2014.11.031] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 11/12/2014] [Accepted: 11/13/2014] [Indexed: 12/18/2022]
Abstract
The development of novel and efficient delivery systems is often the limiting step in fields such as antisense therapies. In this context, poly(d,l-lactide-co-glycolide) acid (PLGA) nanoparticles have been obtained by a versatile and simple technology based on nano-emulsion templating and low-energy emulsification methods, performed in mild conditions, providing good size control. O/W polymeric nano-emulsions were prepared by the phase inversion composition method at 25°C using the aqueous solution/polysorbate80/[4 wt% PLGA in ethyl acetate] system. Nano-emulsions formed at oil-to-surfactant (O/S) ratios between 10/90-90/10 and aqueous contents above 70 wt%. Nano-emulsion with 90 wt% of aqueous solution and O/S ratio of 70/30 was chosen for further studies, since they showed the appropriate characteristics to be used as nanoparticle template: hydrodynamic radii lower than 50 nm and enough kinetic stability. Nanoparticles, prepared from nano-emulsions by solvent evaporation, showed spherical shape, sizes about 40 nm, negative surface charges and high stability. The as-prepared nanoparticles were functionalized with carbosilane cationic dendrons through a carbodiimide-mediated reaction achieving positively charged surfaces. Antisense oligonucleotides were electrostatically attached to nanoparticles surface to perform gene-silencing studies. These complexes were non-haemolytic and non-cytotoxic at the concentrations required. The ability of the complexes to impart cellular uptake was also promising. Therefore, these novel nanoparticulate complexes might be considered as potential non-viral carriers in antisense therapy.
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Affiliation(s)
- Cristina Fornaguera
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Spain; CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Santiago Grijalvo
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Spain; CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Marta Galán
- CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Group of Dendrimers for Biomedical Applications, University of Alcalá (GDAB-UAH), Alcalá de Henares, Madrid, Spain
| | - Elena Fuentes-Paniagua
- CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Group of Dendrimers for Biomedical Applications, University of Alcalá (GDAB-UAH), Alcalá de Henares, Madrid, Spain
| | - Francisco Javier de la Mata
- CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Group of Dendrimers for Biomedical Applications, University of Alcalá (GDAB-UAH), Alcalá de Henares, Madrid, Spain
| | - Rafael Gómez
- CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Group of Dendrimers for Biomedical Applications, University of Alcalá (GDAB-UAH), Alcalá de Henares, Madrid, Spain
| | - Ramon Eritja
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Spain; CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Gabriela Calderó
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Spain; CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Conxita Solans
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), C/Jordi Girona, 18-26, 08034, Barcelona, Spain; CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
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344
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Crucho CIC. Stimuli-responsive polymeric nanoparticles for nanomedicine. ChemMedChem 2014; 10:24-38. [PMID: 25319803 DOI: 10.1002/cmdc.201402290] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 09/17/2014] [Indexed: 12/28/2022]
Abstract
Nature continues to be the ultimate in nanotechnology, where polymeric nanometer-scale architectures play a central role in biological systems. Inspired by the way nature forms functional supramolecular assemblies, researchers are trying to make nanostructures and to incorporate these into macrostructures as nature does. Recent advances and progress in nanoscience have demonstrated the great potential that nanomaterials have for applications in healthcare. In the realm of drug delivery, nanomaterials have been used in vivo to protect the drug entity in the systemic circulation, ensuring reproducible absorption of bioactive molecules that do not naturally penetrate biological barriers, restricting drug access to specific target sites. Several building blocks have been used in the formulation of nanoparticles. Thus, stability, drug release, and targeting can be tailored by surface modification. Herein the state of the art of stimuli-responsive polymeric nanoparticles are reviewed. Such systems are able to control drug release by reacting to naturally occurring or external applied stimuli. Special attention is paid to the design and nanoparticle formulation of these so-called smart drug-delivery systems. Future strategies for further developments of a promising controlled drug delivery responsive system are also outlined.
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Affiliation(s)
- Carina I C Crucho
- Department of Chemistry REQUIMTE/CQFB, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica (Portugal).
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345
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346
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Deng Y, Mathaes R, Winter G, Engert J. Encapsulation of antigen-loaded silica nanoparticles into microparticles for intradermal powder injection. Eur J Pharm Sci 2014; 63:154-66. [DOI: 10.1016/j.ejps.2014.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 06/30/2014] [Accepted: 07/09/2014] [Indexed: 10/25/2022]
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347
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Covis R, Marie E, Durand A, Baravian C. Kinetics of formation of oil-in-water emulsions usingin siturheo-optical measurements. AIChE J 2014. [DOI: 10.1002/aic.14626] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rudy Covis
- CNRS, LCPM, FRE 3564; Nancy F-54001 France
- Université de Lorraine, LCPM, FRE 3564; Nancy F-54001 France
| | - Emmanuelle Marie
- CNRS, LCPM, FRE 3564; Nancy F-54001 France
- Université de Lorraine, LCPM, FRE 3564; Nancy F-54001 France
| | - Alain Durand
- CNRS, LCPM, FRE 3564; Nancy F-54001 France
- Université de Lorraine, LCPM, FRE 3564; Nancy F-54001 France
| | - Christophe Baravian
- CNRS, LEMTA, UMR 7563; Nancy F-54001 France
- Université de Lorraine, LEMTA, UMR 7563; Nancy F-54001 France
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348
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Ye Y, Xing H, Li Y. Nanoencapsulation of the sasanquasaponin from Camellia oleifera, its photo responsiveness and neuroprotective effects. Int J Nanomedicine 2014; 9:4475-84. [PMID: 25278752 PMCID: PMC4178501 DOI: 10.2147/ijn.s64313] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Sasanquasaponin, a bioactive compound isolated from seeds of Camellia oleifera, shows central effects in our previous research. In order to investigate its neuroprotective effects, a new kind of nanocapsule with photo responsiveness was designed to deliver sasanquasaponin into the brain and adjusted by red light. The nanocapsule was prepared using sasanquasaponin emulsified with soybean lecithin and cholesterol solution. The natural phaeophorbide from silkworm excrement as a photosensitizer was added in the lipid phase to make the nanocapsules photo responsive. The physicochemical properties of encapsulation efficiency, size distribution, morphology and stability were measured using high-performance liquid chromatography, particle size analyzer, transmission electron microscope, differential scanning calorimetry and thermogravimetry. Photo responsiveness was determined by the sasanquasaponin release in pH 7.5 phosphate buffer under the laser at 670 nm. The neuroprotective effects were evaluated by the expression of tyrosine hydroxylase (TH), decrease of inflammatory cytokines TNF-α and IL-1β in the brain, and amelioration of kainic acid-induced behavioral disorder in mice. The nanocapsules had higher encapsulation efficiency and stability when the phaeophorbide content was 2% of lecithin weight. The average size was 172.2 nm, distributed in the range of 142-220 nm. The phaeophorbide was scattered sufficiently in the outer lecithin layer of the nanocapsules and increased the drug release after irradiation. TH expression in brain tissues and locomotive activities in mice were reduced by kainic acid, but could be improved by the sasanquasaponin nanocapsules after tail vein injection with 15 minutes of irradiation at the nasal cavity. The sasanquasaponin took effect through inflammatory alleviation in central tissues. The sasanquasaponin nanocapsules with phaeophorbide have photo responsiveness and neuroprotective effects under the irradiation of red light. This preparation presents a new approach to brain neuroprotection, and has potential for clinical application.
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Affiliation(s)
- Yong Ye
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, People's Republic of China
| | - Haiting Xing
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, People's Republic of China
| | - Yue Li
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, People's Republic of China
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349
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Phuengkham H, Teeranachaideekul V, Chulasiri M, Nasongkla N. Preparation and optimization of chlorophene-loaded nanospheres as controlled release antimicrobial delivery systems. Pharm Dev Technol 2014; 21:8-13. [DOI: 10.3109/10837450.2014.959180] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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350
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Doerdelmann G, Kozlova D, Epple M. A pH-sensitive poly(methyl methacrylate) copolymer for efficient drug and gene delivery across the cell membrane. J Mater Chem B 2014; 2:7123-7131. [DOI: 10.1039/c4tb01052c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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