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Kosakowska KA, Casey BK, Albert JNL, Wang Y, Ashbaugh HS, Grayson SM. Synthesis and Self-Assembly of Amphiphilic Star/Linear-Dendritic Polymers: Effect of Core versus Peripheral Branching on Reverse Micelle Aggregation. Biomacromolecules 2018; 19:3177-3189. [PMID: 29986144 DOI: 10.1021/acs.biomac.8b00679] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of branched polymers, consisting of a poly(ethylene glycol) (PEG) core and lipophilic peripheral dendrons, were synthesized and their self-assembly into reverse micelles studied toward the ultimate goal of carrier-mediated transdermal drug delivery. More specifically, this investigation systematically explores the structure-property contributions arising from location and extent of branching by varying the number of branch points at the core and the generation of dendrons at the polar/nonpolar interface. For branching at the core, PEGs were selected with one, two or four arms, with one terminal functionality per arm. For peripheral branching, end groups were modified with polyester dendrons (of dendritic generations 0, 1, and 2) for each of the three cores. Finally, lauric acid (LA) was used to esterify the periphery, yielding a library of branched, amphiphilic polymers. Characterization of these materials via MALDI-TOF MS, GPC and NMR confirmed their exceptionally well-defined structure. Furthermore, atomic force microscopy (AFM) and dynamic light scattering (DLS) confirmed these polymers' abilities to make discrete aggregates. As expected, increased multiplicity of branching resulted in more compact aggregates; however, the location of branching (core vs periphery) did not seem as important in defining aggregate size as the extent of branching. Finally, computational modeling of the branched amphiphile series was explored to elucidate the macromolecular interactions governing self-assembly in these systems.
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Sang X, Yang Q, Shi G, Zhang L, Wang D, Ni C. Preparation of pH/redox dual responsive polymeric micelles with enhanced stability and drug controlled release. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:727-733. [PMID: 30033307 DOI: 10.1016/j.msec.2018.06.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 05/28/2018] [Accepted: 06/09/2018] [Indexed: 12/19/2022]
Abstract
Stimuli-responsive polymeric micelles were prepared through self-assembly of amphiphilic copolymers poly(ethylene glycol)-poly(γ-benzyl l-glutamate), followed by a core-crosslinking reaction using cystamine as the crosslinking agent. The crosslinked micelles with spherical morphologies in nanometer size showed enhanced stability against dilution and concentrated salt solutions compared to the micelles before crosslinking. Doxorubicin (DOX) as a model drug was encapsulated into the core of micelles through electrostatic interactions between carboxylic acid and DOX. In vitro drug release under pH and redox conditions was investigated. Furthermore, the cytotoxicity of micelles was evaluated before and after drug loading. The endocytosis of DOX-loaded micelles and the intracellular drug release were studied. DOX-loaded micelles exhibited accelerated drug release behaviors in an acidic and reductive environment, and showed an inhibited premature release behavior as compared to the noncrosslinked micelles. Considering their enhanced stability, pH and redox dual triggered responsive characteristics, the polymeric micelles can serve as potential systems for controlled drug delivery.
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Affiliation(s)
- Xinxin Sang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Qiyi Yang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Gang Shi
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Liping Zhang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Dawei Wang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Caihua Ni
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China.
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Moshe H, Davizon Y, Menaker Raskin M, Sosnik A. Novel poly(vinyl alcohol)-based amphiphilic nanogels by non-covalent boric acid crosslinking of polymeric micelles. Biomater Sci 2018; 5:2295-2309. [PMID: 29019482 DOI: 10.1039/c7bm00675f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this work, we report a new type of poly(vinyl alcohol)-g-poly(N-isopropylacrylamide) (PVA-g-PNiPAAm) amphiphilic nanogel produced by the non-covalent crosslinking of PVA polyol domains in preformed polymeric micelles with boric acid. The nanomaterials showed sizes in the 100-250 nm range (DLS) and a spherical morphology (HR-SEM). We demonstrated that the size of the polymeric micelles could be fine-tuned by changing the concentration (and the aggregation pattern) of the polymeric amphiphile in water. Upon crosslinking, the polymeric micelles turned into physically stable amphiphilic nanogels that displayed both size and size distribution similar to the micellar precursor for up to two weeks, even under disfavored conditions of concentration and temperature that, in the case of non-crosslinked counterparts, resulted in quick disassembly. In addition, we show for the first time the feasibility of spray-drying technology to consolidate the 3D network formed between PVA and boric acid and to produce stable powders that can be reconstituted upon use at any desired concentration. Moreover, the formation of a borated surface conferred the nanogels with good mucoadhesiveness in vitro. Finally, these novel nanomaterials showed optimal cell compatibility in a model of the intestinal epithelium, the Caco2 cell line. Overall results demonstrate the unprecedented versatility of the proposed modular approach and opens completely new horizons in the application of polymeric micelles and other self-assembled polymeric nanomaterials in diagnostics and therapeutics.
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Affiliation(s)
- Hen Moshe
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Technion City, Haifa, Israel.
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54
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Synthesis, aggregation behavior, and simvastatin solubilization by block polyethers with different structures. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4341-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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55
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Wu W, Luo L, Wang Y, Wu Q, Dai HB, Li JS, Durkan C, Wang N, Wang GX. Endogenous pH-responsive nanoparticles with programmable size changes for targeted tumor therapy and imaging applications. Theranostics 2018; 8:3038-3058. [PMID: 29896301 PMCID: PMC5996358 DOI: 10.7150/thno.23459] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 03/06/2018] [Indexed: 12/20/2022] Open
Abstract
Nanotechnology-based antitumor drug delivery systems, known as nanocarriers, have demonstrated their efficacy in recent years. Typically, the size of the nanocarriers is around 100 nm. It is imperative to achieve an optimum size of these nanocarriers which must be designed uniquely for each type of delivery process. For pH-responsive nanocarriers with programmable size, changes in pH (~6.5 for tumor tissue, ~5.5 for endosomes, and ~5.0 for lysosomes) may serve as an endogenous stimulus improving the safety and therapeutic efficacy of antitumor drugs. This review focuses on current advanced pH-responsive nanocarriers with programmable size changes for anticancer drug delivery. In particular, pH-responsive mechanisms for nanocarrier retention at tumor sites, size reduction for penetrating into tumor parenchyma, escaping from endo/lysosomes, and swelling or disassembly for drug release will be highlighted. Additional trends and challenges of employing these nanocarriers in future clinical applications are also addressed.
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Affiliation(s)
- Wei Wu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China
| | - Li Luo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China
| | - Yi Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China
| | - Qi Wu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China
| | - Han-Bin Dai
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China
| | - Jian-Shu Li
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Colm Durkan
- The Nanoscience Centre, University of Cambridge, Cambridge, CB3 0FF, UK
| | - Nan Wang
- The Nanoscience Centre, University of Cambridge, Cambridge, CB3 0FF, UK
| | - Gui-Xue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, China
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Noi I, Schlachet I, Kumarasamy M, Sosnik A. Permeability of Novel Chitosan-g-Poly(Methyl Methacrylate) Amphiphilic Nanoparticles in a Model of Small Intestine In Vitro. Polymers (Basel) 2018; 10:E478. [PMID: 30966512 PMCID: PMC6415358 DOI: 10.3390/polym10050478] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 04/22/2018] [Accepted: 04/24/2018] [Indexed: 01/23/2023] Open
Abstract
Engineering of drug nanocarriers combining fine-tuned mucoadhesive/mucopenetrating properties is currently being investigated to ensure more efficient mucosal drug delivery. Aiming to improve the transmucosal delivery of hydrophobic drugs, we designed a novel nanogel produced by the self-assembly of amphiphilic chitosan graft copolymers ionotropically crosslinked with sodium tripolyphosphate. In this work, we synthesized, for the first time, chitosan-g-poly(methyl methacrylate) nanoparticles thiolated by the conjugation of N-acetyl cysteine. First, we confirmed that both non-crosslinked and crosslinked nanoparticles in the 0.05⁻0.1% w/v concentration range display very good cell compatibility in two cell lines that are relevant to oral delivery, Caco-2 cells that mimic the intestinal epithelium and HT29-MTX cells that are a model of mucin-producing goblet cells. Then, we evaluated the effect of crosslinking, nanoparticle concentration, and thiolation on the permeability in vitro utilizing monolayers of (i) Caco-2 and (ii) Caco-2:HT29-MTX cells (9:1 cell number ratio). Results confirmed that the ability of the nanoparticles to cross Caco-2 monolayer was affected by the crosslinking. In addition, thiolated nanoparticles interact more strongly with mucin, resulting in a decrease of the apparent permeability coefficient (Papp) compared to the pristine nanoparticles. Moreover, for all the nanoparticles, higher concentration resulted in lower Papp, suggesting that the transport pathways can undergo saturation.
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Affiliation(s)
- Imrit Noi
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, 3200003 Haifa, Israel.
| | - Inbar Schlachet
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, 3200003 Haifa, Israel.
| | - Murali Kumarasamy
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, 3200003 Haifa, Israel.
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, 3200003 Haifa, Israel.
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57
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Schlachet I, Sosnik A. Protoporphyrin IX-modified chitosan-g-oligo(NiPAAm) polymeric micelles: from physical stabilization to permeability characterization in vitro. Biomater Sci 2018; 5:128-140. [PMID: 27905575 DOI: 10.1039/c6bm00667a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two main hurdles persist towards the more extensive bench-to-bed side translation of non-parenteral polymeric micelles. The first pertains to their thermodynamically-driven disassembly under uncontrolled dilution conditions in the biological milieu and upon interaction with biomacromolecules (e.g., proteins). The second is related to the relatively poor understanding of the pathways by which polymeric micelles improve the bioavailability of the payload by mucosal routes (e.g., intestinal). In this work, a chitosan-g-oligo(N-isopropylacrylamide) (CS-g-oligo(NiPAAm)) copolymer was modified with non-cytotoxic amounts of protoporphyrin IX (PP), a planar molecule of amphiphilic character that undergoes self-aggregation in water by forming π-π stacked supramolecular structures, to induce micellization under disfavored conditions and to serve as a fluorescent tracer for the measurement of the micelle permeability across a model of the intestinal epithelium in vitro. Findings indicated that the conjugation of PP amounts as low as 2% w/w induced the formation of micelles at temperatures below the lower critical solution temperature of oligo(NiPAAm) (30-32 °C). Moreover, permeability studies conducted at both 4 °C and 37 °C strongly suggested that despite the relatively large size of the micelles (200-300 nm), they cross the epithelial monolayer mainly by a paracellular pathway due to the opening of tight junctions. Complementary uptake studies by flow cytometry indicated that no endocytosis, though due to passive or facilitated diffusion, some internalization takes place.
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Affiliation(s)
- Inbar Schlachet
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
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58
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Pugliese E, Coentro JQ, Zeugolis DI. Advancements and Challenges in Multidomain Multicargo Delivery Vehicles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704324. [PMID: 29446161 DOI: 10.1002/adma.201704324] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 11/05/2017] [Indexed: 06/08/2023]
Abstract
Reparative and regenerative processes are well-orchestrated temporal and spatial events that are governed by multiple cells, molecules, signaling pathways, and interactions thereof. Yet again, currently available implantable devices fail largely to recapitulate nature's complexity and sophistication in this regard. Herein, success stories and challenges in the field of layer-by-layer, composite, self-assembly, and core-shell technologies are discussed for the development of multidomain/multicargo delivery vehicles.
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Affiliation(s)
- Eugenia Pugliese
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
- Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
| | - João Q Coentro
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
- Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
| | - Dimitrios I Zeugolis
- Regenerative, Modular and Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
- Science Foundation Ireland (SFI), Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Ireland
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59
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Liu R, Zhang J, Zhang D, Wang K, Luan Y. Self-assembling nanoparticles based on cytarabine prodrug for enhanced leukemia treatment. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.12.086] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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60
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Taipaleenmäki EM, Mouritzen SA, Schattling PS, Zhang Y, Städler B. Mucopenetrating micelles with a PEG corona. NANOSCALE 2017; 9:18438-18448. [PMID: 29159350 DOI: 10.1039/c7nr06821b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Crossing the intestinal mucus layer is a long-standing challenge for orally delivered nanoparticles carrying therapeutic cargo. We report the assembly of mucopenetrating cargo-loaded micelles using block copolymers consisting of either linear poly(ethylene glycol) (PEG) or bottle-brush poly(oligo(ethylene glycol)methacrylate) (PEGb) as the hydrophilic block and poly(caprolactone) (PCL) or poly(cholesteryl methacrylate) (PCMA) as the hydrophobic extension. The micelles were shown to preserve their stability and retain ∼50% of their cargo in simulated gastric fluid. The ability of micelles to diffuse through reconstituted porcine mucus was assessed in a microfluidic set-up. Finally, the delivery of Nile Red as a hydrophobic model cargo across a mucus layer produced by epithelial cells was demonstrated. These engineered mucopenetrating micelles have potential to be developed into efficient absorption enhancers, contributing a nanotechnology solution to oral drug delivery.
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Affiliation(s)
- Essi M Taipaleenmäki
- Interdisciplinary Nanoscience Center, Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus, Denmark.
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61
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Fathi M, Sahandi Zangabad P, Majidi S, Barar J, Erfan-Niya H, Omidi Y. Stimuli-responsive chitosan-based nanocarriers for cancer therapy. ACTA ACUST UNITED AC 2017; 7:269-277. [PMID: 29435435 PMCID: PMC5801539 DOI: 10.15171/bi.2017.32] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 11/02/2017] [Accepted: 11/12/2017] [Indexed: 01/14/2023]
Abstract
Introduction: Stimuli-responsive nanocarriers offer unique advantages over the traditional drug delivery systems (DDSs) in terms of targeted drug delivery and on-demand release of cargo drug molecules. Of these, chitosan (CS)-based DDSs offer several advantages such as high compatibility with biological settings. Methods: In this study, we surveyed the literature in terms of the stimuli-responsive nanocarriers and discussed the most recent advancements in terms of CS-based nanosystems and their applications in cancer therapy and diagnosis. Results: These advanced DDSs are able to release the entrapped drugs in response to a specific endogenous stimulus (e.g., pH, glutathione concentration or certain enzymes) or exogenous stimulus (e.g., temperature, light, ultrasound, and magnetic field) at the desired time and target site. Dual-responsive nanocarriers by the combination of different stimuli have also been developed as efficient and improved DDSs. Among the stimuli-responsive nanocarriers, CS-based DDSs offer several advantages, including biocompatibility and biodegradability, antibacterial activity, ease of modification and functionalization, and non-immunogenicity. They are as one of the most ideal smart multifunction DDSs. Conclusion: The CS-based stimuli-responsive multifunctional nanosystems (NSs) offer unique potential for the targeted delivery of anticancer agents and provide great potential for on-demand and controlled-release of anticancer agents in response to diverse external/internal stimuli.
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Affiliation(s)
- Marziyeh Fathi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parham Sahandi Zangabad
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sima Majidi
- Department of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran
| | - Jaleh Barar
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Erfan-Niya
- Department of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran
| | - Yadollah Omidi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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62
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Zhou X, Zhao K. How side chains affect conformation and electrical properties of poly(acrylic acid) in solution? Phys Chem Chem Phys 2017; 19:20559-20572. [PMID: 28730200 DOI: 10.1039/c7cp02460f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To better understand the effect of side chains on the chain conformation and electrical properties of polyelectrolytes, dielectric measurements were carried out on solutions of poly(acrylic acid) (PAA), poly(acrylic acid)-graft-dodecyl (PAA-g-dodecyl), and poly(acrylic acid)-graft-poly(ethylene oxide) (PAA-g-PEO) over a wide concentration range. Double dielectric relaxations with counterion distribution were observed for these polymers and a refined double-layer polarization model was proposed to analyze these, by which valuable information about conformations and interfacial electrokinetic properties was obtained. The transitional concentrations for the overlapping and entanglement of chains were identified from results for the dielectric increment and relaxation time. The concentration dependences of the ratio of effective charges were estimated from conductivity data. It was shown that effective charges on PAA were greatly influenced by PEO or dodecyl side chains, which caused steric hindrance of counterion binding and further dissociation of carboxylic groups or bound counterions. Moreover, a mutual superposition and offsetting effect of PEO and dodecyl side chains was observed. An enhancement in the interpenetration of counterion atmospheres as a result of side chains was also found. In addition, the rate constant ratio and the distance of counterion fluctuations perpendicular to the chains were estimated. It was demonstrated that the effects of side chains on the effective charges or ionization properties of GCP play an important role in their conformation, counterion distribution, and fluctuation.
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Affiliation(s)
- Xinlu Zhou
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
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63
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Schattling P, Taipaleenmäki E, Zhang Y, Städler B. A Polymer Chemistry Point of View on Mucoadhesion and Mucopenetration. Macromol Biosci 2017; 17. [PMID: 28675773 DOI: 10.1002/mabi.201700060] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 06/07/2017] [Indexed: 12/20/2022]
Abstract
Although oral is the preferred route of administration of pharmaceutical formulations, the long-standing challenge for medically active compounds to efficiently cross the mucus layer barrier limits its wider applicability. Efforts in nanomedicine to overcome this hurdle consider mucoadhesive and mucopenetrating drug carriers by selectively designing (macromolecular) building blocks. This review highlights and critically discusses recent strategies developed in this context including poly(ethylene glycol)-based modifications, cationic and thiolated polymers, as well as particles with high charge density, zeta-potential shifting ability, or mucolytic properties. The latest advances in ex vivo test platforms are also reviewed.
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Affiliation(s)
- Philipp Schattling
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav-Wieds Vej 14, 8000, Aarhus, Denmark
| | - Essi Taipaleenmäki
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav-Wieds Vej 14, 8000, Aarhus, Denmark
| | - Yan Zhang
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav-Wieds Vej 14, 8000, Aarhus, Denmark
| | - Brigitte Städler
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav-Wieds Vej 14, 8000, Aarhus, Denmark
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64
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Zaidi S, Misba L, Khan AU. Nano-therapeutics: A revolution in infection control in post antibiotic era. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:2281-2301. [PMID: 28673854 DOI: 10.1016/j.nano.2017.06.015] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/20/2017] [Accepted: 06/20/2017] [Indexed: 12/22/2022]
Abstract
With the arrival of antibiotics 70 years ago, meant a paradigm shift in overcoming infectious diseases. For decades, drugs have been used to treat different infections. However, with time bacteria have become resistant to multiple antibiotics, making some diseases difficult to fight. Nanoparticles (NPs) as antibacterial agents appear to have potential to overcome such problems and to revolutionize the diagnosis and treatment of bacterial infections. Therefore, there is significant interest in the use of NPs to treat variety of infections, particularly caused by multidrug-resistant (MDR) strains. This review begins with illustration of types of NPs followed by the literature of current research addressing mechanisms of NPs antibacterial activity, steps involved in NP mediated drug delivery as well as areas where NPs use has potential to improve the treatment, like NP enabled vaccination. Besides, recently emerged innovative NP platforms have been highlighted and their progress made in each area has been reviewed.
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Affiliation(s)
- Sahar Zaidi
- Medical Microbiology and Molecular Biology Lab., Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Lama Misba
- Medical Microbiology and Molecular Biology Lab., Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Asad U Khan
- Medical Microbiology and Molecular Biology Lab., Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India.
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65
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Zhang H, Jiang W, Liu R, Zhang J, Zhang D, Li Z, Luan Y. Rational Design of Metal Organic Framework Nanocarrier-Based Codelivery System of Doxorubicin Hydrochloride/Verapamil Hydrochloride for Overcoming Multidrug Resistance with Efficient Targeted Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:19687-19697. [PMID: 28530401 DOI: 10.1021/acsami.7b05142] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Conventional organic and inorganic drug nanocarriers suffer from serious drawbacks such as low drug-storage capacity and uncontrolled release. Moreover, multidrug resistance (MDR) has been one of the primary causes leading to chemotherapy failure for cancers. The main reason for MDR is the overexpressed active efflux transporters such as P-glycoprotein. Here, zeolitic imidazolate framework ZIF-8, as one of the biocompatible metal organic frameworks (MOFs), is reported for the first time as the multidrug carrier to realizing the efficient codelivery of verapamil hydrochloride (VER) as the P-glycoprotein inhibitor as well as doxorubicin hydrochloride (DOX) as an anticancer drug to overcome the MDR in addition to realize the active targeted ability for an efficient anticancer effect. Uniform ZIF-8 nanoparticles encapsulating DOX and VER are achieved by a facile one-pot process, in which the VER is used to overcome the multidrug resistance. Furthermore, methoxy poly(ethylene glycol)-folate (PEG-FA) is used to stabilize the (DOX+VER)@ZIF-8 to realize prolonged circulations and an active targeting drug delivery. In particular, the ZIF-8 exhibits high drug loading content up to ∼40.9% with a pH-triggered release behavior. Importantly, the PEG-FA/(DOX+VER)@ZIF-8 shows enhanced therapeutic efficiencies with much safety compared with the direct administration of free DOX both in vitro and in vivo. Near infrared fluorescent (NIRF) imaging indicates that the PEG-FA/(DOX+VER)@ZIF-8 can increase the drug accumulations in tumors for targeted cancer therapy. Therefore, the PEG-FA/(DOX+VER)@ZIF-8 multidrug delivery system can be used as a promising efficient formulation in reversing the multidrug resistance for targeted cancer therapy.
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Affiliation(s)
- Huiyuan Zhang
- School of Pharmaceutical Science, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University , Jinan 250012, China
| | - Wei Jiang
- School of Pharmaceutical Science, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University , Jinan 250012, China
| | - Ruiling Liu
- School of Pharmaceutical Science, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University , Jinan 250012, China
| | - Jing Zhang
- School of Pharmaceutical Science, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University , Jinan 250012, China
| | - Di Zhang
- School of Pharmaceutical Science, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University , Jinan 250012, China
| | - Zhonghao Li
- Key Lab of Colloid & Interface Chemistry, Shandong University, Ministry of Education , Jinan 250100, China
| | - Yuxia Luan
- School of Pharmaceutical Science, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University , Jinan 250012, China
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66
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Ellis E, Zhang K, Lin Q, Ye E, Poma A, Battaglia G, Loh XJ, Lee TC. Biocompatible pH-responsive nanoparticles with a core-anchored multilayer shell of triblock copolymers for enhanced cancer therapy. J Mater Chem B 2017; 5:4421-4425. [PMID: 32263969 DOI: 10.1039/c7tb00654c] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Drug nanocarriers are synthesised via a facile self-assembly approach using gold nanoparticles (Au NPs) as a structural core. The nanocarriers feature a multilayer shell of POEGMA-PDPA-PMPC triblock copolymers with a chain-end thiol functional group for anchoring to the Au NP surface. This water-soluble triblock copolymer was synthesised via atom transfer radical polymerisation (ATRP) from a bi-functional initiator containing a disulphide bridge. The resultant nanocarriers exhibit high biocompatibility plus excellent colloidal stability and antifouling capability in bio-media (50% PBS/FBS). Encapsulation and release of a hydrophobic drug can be effectively triggered by a pH-stimulus. Meanwhile drug-loaded nanocarriers show enhanced efficacy towards cancer cells compared to plain drug.
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Affiliation(s)
- Elizabeth Ellis
- Department of Chemistry, University College London (UCL), UK
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67
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Chan D, Yu AC, Appel EA. Single-Chain Polymeric Nanocarriers: A Platform for Determining Structure–Function Correlations in the Delivery of Molecular Cargo. Biomacromolecules 2017; 18:1434-1439. [DOI: 10.1021/acs.biomac.7b00249] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Doreen Chan
- Department
of Chemistry and ‡Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Anthony C. Yu
- Department
of Chemistry and ‡Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Eric A. Appel
- Department
of Chemistry and ‡Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
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68
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Thiolated chitosan micelles: Highly mucoadhesive drug carriers. Carbohydr Polym 2017; 167:250-258. [PMID: 28433160 DOI: 10.1016/j.carbpol.2017.03.019] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 03/07/2017] [Accepted: 03/07/2017] [Indexed: 11/22/2022]
Abstract
Current study was aimed to generate thiolated chitosan micelles based on amphiphilic chitosan-stearic acid conjugate (CSA) and to evaluate adhesive properties on mucosal membranes. Chitosan-stearic acid-thioglycolic acid (CSA-TGA) conjugate was synthesized via stearic acid linkage to chitosan and later, thioglycolic acid was covalently attached to CSA. CSA-TGA and CSA were characterized by degree of amine substitution, thiol group determination, ATR-FTIR and cytotoxicity analysis. Micelle size was 13.40±9.38 and 26.30±26.86nm and zeta potential -0.01 and 0.03mV for CSA and CSA-TGA, respectively. In porcine mucus CSA-TGA micelles exhibited 1.80-, 2.12- and 1.72-fold increase in dynamic viscosity, elastic modulus and viscous modulus, respectively. Compared to CSA micelles CSA-TGA micelles remained up to 56.1- fold and 28.6- fold higher degree attached on intestinal and vaginal mucosa, respectively. Taking possibility to incorporate both lipophilic and hydrophilic drugs into these micelles into account, thiol functionalized micelles could be promising carriers for mucosal drug delivery.
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69
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Zhang Y, Tong D, Che D, Pei B, Xia X, Yuan G, Jin X. Ascorbyl palmitate/d-α-tocopheryl polyethylene glycol 1000 succinate monoester mixed micelles for prolonged circulation and targeted delivery of compound K for antilung cancer therapy in vitro and in vivo. Int J Nanomedicine 2017; 12:605-614. [PMID: 28144142 PMCID: PMC5248941 DOI: 10.2147/ijn.s119226] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The roles of ginsenoside compound K (CK) in inhibiting tumor have been widely recognized in recent years. However, low water solubility and significant P-gp efflux have restricted its application. In this study, CK ascorbyl palmitate (AP)/d-α-tocopheryl polyethylene glycol 1000 succinate monoester (TPGS) mixed micelles were prepared as a delivery system to increase the absorption and targeted antitumor effect of CK. Consequently, the solubility of CK increased from 35.2±4.3 to 1,463.2±153.3 μg/mL. Furthermore, in an in vitro A549 cell model, CK AP/TPGS mixed micelles significantly inhibited cell growth, induced G0/G1 phase cell cycle arrest, induced cell apoptosis, and inhibited cell migration compared to free CK, all indicating that the developed micellar delivery system could increase the antitumor effect of CK in vitro. Both in vitro cellular fluorescence uptake and in vivo near-infrared imaging studies indicated that AP/TPGS mixed micelles can promote cellular uptake and enhance tumor targeting. Moreover, studies in the A549 lung cancer xenograft mouse model showed that CK AP/TPGS mixed micelles are an efficient tumor-targeted drug delivery system with an effective antitumor effect. Western blot analysis further confirmed that the marked antitumor effect in vivo could likely be due to apoptosis promotion and P-gp efflux inhibition. Therefore, these findings suggest that the AP/TPGS mixed micellar delivery system could be an efficient delivery strategy for enhanced tumor targeting and antitumor effects.
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Affiliation(s)
- Youwen Zhang
- Department of Hospital Pharmacy, The First Hospital of Suqian, Suqian, People's Republic of China
| | - Deyin Tong
- Department of Hospital Pharmacy, The First Hospital of Suqian, Suqian, People's Republic of China
| | - Daobiao Che
- Department of Hospital Pharmacy, The First Hospital of Suqian, Suqian, People's Republic of China
| | - Bing Pei
- Department of Hospital Pharmacy, The First Hospital of Suqian, Suqian, People's Republic of China
| | - Xiaodong Xia
- Department of Hospital Pharmacy, The First Hospital of Suqian, Suqian, People's Republic of China
| | - Gaofeng Yuan
- Department of Hospital Pharmacy, The First Hospital of Suqian, Suqian, People's Republic of China
| | - Xin Jin
- Department of Hospital Pharmacy, The First Hospital of Suqian, Suqian, People's Republic of China
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70
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Cagel M, Tesan FC, Bernabeu E, Salgueiro MJ, Zubillaga MB, Moretton MA, Chiappetta DA. Polymeric mixed micelles as nanomedicines: Achievements and perspectives. Eur J Pharm Biopharm 2017; 113:211-228. [PMID: 28087380 DOI: 10.1016/j.ejpb.2016.12.019] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/01/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
Abstract
During the past few decades, polymeric micelles have raised special attention as novel nano-sized drug delivery systems for optimizing the treatment and diagnosis of numerous diseases. These nanocarriers exhibit several in vitro and in vivo advantages as well as increased stability and solubility to hydrophobic drugs. An interesting approach for optimizing these properties and overcoming some of their disadvantages is the combination of two or more polymers in order to assemble polymeric mixed micelles. This review article gives an overview on the current state of the art of several mixed micellar formulations as nanocarriers for drugs and imaging probes, evaluating their ongoing status (preclinical or clinical stage), with special emphasis on type of copolymers, physicochemical properties, in vivo progress achieved so far and toxicity profiles. Besides, the present article presents relevant research outcomes about polymeric mixed micelles as better drug delivery systems, when compared to polymeric pristine micelles. The reported data clearly illustrates the promise of these nanovehicles reaching clinical stages in the near future.
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Affiliation(s)
- Maximiliano Cagel
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Fiorella C Tesan
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina
| | - Ezequiel Bernabeu
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Maria J Salgueiro
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina
| | - Marcela B Zubillaga
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Marcela A Moretton
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Diego A Chiappetta
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
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71
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Li C, Li H, Wang Q, Zhou M, Li M, Gong T, Zhang Z, Sun X. pH-sensitive polymeric micelles for targeted delivery to inflamed joints. J Control Release 2017; 246:133-141. [DOI: 10.1016/j.jconrel.2016.12.027] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 10/30/2016] [Accepted: 12/25/2016] [Indexed: 01/02/2023]
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72
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Role of pH-responsiveness in the design of chitosan-based cancer nanotherapeutics: A review. Biointerphases 2016; 11:04B201. [DOI: 10.1116/1.4944661] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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73
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Matelová A, Huerta-Angeles G, Šmejkalová D, Brůnová Z, Dušek J, Vícha R, Velebný V. Synthesis of novel amphiphilic hyaluronan containing-aromatic fatty acids for fabrication of polymeric micelles. Carbohydr Polym 2016; 151:1175-1183. [DOI: 10.1016/j.carbpol.2016.06.085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 06/19/2016] [Accepted: 06/20/2016] [Indexed: 12/29/2022]
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74
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Wang C, Wang J, Chen X, Zheng X, Xie Z, Chen L, Chen X. Phenylboronic Acid-Cross-Linked Nanoparticles with Improved Stability as Dual Acid-Responsive Drug Carriers. Macromol Biosci 2016; 17. [DOI: 10.1002/mabi.201600227] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 07/28/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Chunran Wang
- Department of Chemistry; Northeast Normal University; Changchun 130024 P. R. China
| | - Jinze Wang
- Department of Chemistry; Northeast Normal University; Changchun 130024 P. R. China
| | - Xiaofei Chen
- Department of Chemistry; Northeast Normal University; Changchun 130024 P. R. China
| | - Xu Zheng
- Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 P. R. China
| | - Zhigang Xie
- Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 P. R. China
| | - Li Chen
- Department of Chemistry; Northeast Normal University; Changchun 130024 P. R. China
| | - Xuesi Chen
- Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 P. R. China
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75
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Interactions between a triblock copolymer and hydroxyethyl cellulose in aqueous solution and their use in the solubilization of Amiodarone. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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76
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Challenges in oral drug delivery of antiretrovirals and the innovative strategies to overcome them. Adv Drug Deliv Rev 2016; 103:105-120. [PMID: 26772138 DOI: 10.1016/j.addr.2015.12.022] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 12/20/2015] [Accepted: 12/28/2015] [Indexed: 01/30/2023]
Abstract
Development of novel drug delivery systems (DDS) represents a promising opportunity to overcome the various bottlenecks associated with the chronic antiretroviral (ARV) therapy of the human immunodeficiency virus (HIV) infection. Oral drug delivery is the most convenient and simplest route of drug administration that involves the swallowing of a pharmaceutical compound with the intention of releasing it into the gastrointestinal tract. In oral delivery, drugs can be formulated in such a way that they are protected from digestive enzymes, acids, etc. and released in different regions of the small intestine and/or the colon. Not surprisingly, with the exception of the subcutaneous enfuvirtide, all the marketed ARVs are administered orally. However, conventional (marketed) and innovative (under investigation) oral delivery systems must overcome numerous challenges, including the acidic gastric environment, and the poor aqueous solubility and physicochemical instability of many of the approved ARVs. In addition, the mucus barrier can prevent penetration and subsequent absorption of the released drug, a phenomenon that leads to lower oral bioavailability and therapeutic concentration in plasma. Moreover, the frequent administration of the cocktail (ARVs are administered at least once a day) favors treatment interruption. To improve the oral performance of ARVs, the design and development of more efficient oral drug delivery systems are called for. The present review highlights various innovative research strategies adopted to overcome the limitations of the present treatment regimens and to enhance the efficacy of the oral ARV therapy in HIV.
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77
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Polyelectrolyte Complex Based Interfacial Drug Delivery System with Controlled Loading and Improved Release Performance for Bone Therapeutics. NANOMATERIALS 2016; 6:nano6030053. [PMID: 28344311 PMCID: PMC5302517 DOI: 10.3390/nano6030053] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 02/26/2016] [Accepted: 03/14/2016] [Indexed: 11/17/2022]
Abstract
An improved interfacial drug delivery system (DDS) based on polyelectrolyte complex (PEC) coatings with controlled drug loading and improved release performance was elaborated. The cationic homopolypeptide poly(l-lysine) (PLL) was complexed with a mixture of two cellulose sulfates (CS) of low and high degree of substitution, so that the CS and PLL solution have around equal molar charged units. As drugs the antibiotic rifampicin (RIF) and the bisphosphonate risedronate (RIS) were integrated. As an important advantage over previous PEC systems this one can be centrifuged, the supernatant discarded, the dense pellet phase (coacervate) separated, and again redispersed in fresh water phase. This behavior has three benefits: (i) Access to the loading capacity of the drug, since the concentration of the free drug can be measured by spectroscopy; (ii) lower initial burst and higher residual amount of drug due to removal of unbound drug and (iii) complete adhesive stability due to the removal of polyelectrolytes (PEL) excess component. It was found that the pH value and ionic strength strongly affected drug content and release of RIS and RIF. At the clinically relevant implant material (Ti40Nb) similar PEC adhesive and drug release properties compared to the model substrate were found. Unloaded PEC coatings at Ti40Nb showed a similar number and morphology of above cultivated human mesenchymal stem cells (hMSC) compared to uncoated Ti40Nb and resulted in considerable production of bone mineral. RIS loaded PEC coatings showed similar effects after 24 h but resulted in reduced number and unhealthy appearance of hMSC after 48 h due to cell toxicity of RIS.
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78
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Li N, Huang C, Luan Y, Song A, Song Y, Garg S. Active targeting co-delivery system based on pH-sensitive methoxy-poly(ethylene glycol)2K-poly(ε-caprolactone)4K-poly(glutamic acid)1K for enhanced cancer therapy. J Colloid Interface Sci 2016; 472:90-8. [PMID: 27016914 DOI: 10.1016/j.jcis.2016.03.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 03/16/2016] [Accepted: 03/17/2016] [Indexed: 12/31/2022]
Abstract
In this paper, we successfully synthesized folate-modified pH-sensitive copolymer methoxy-poly(ethylene glycol)2K-poly(ε-caprolactone)4K-poly(glutamic acid)1K (mPEG2K-PCL4K-PGA1K-FA), which could form the polymeric assembly in an aqueous solution, for co-delivering hydrophilic drugs doxorubicin hydrochloride (DOX) and verapamil hydrochloride (VER) (FA-poly(DOX+VER)). Since VER was an effective P-glycoprotein inhibitor, the combination of DOX and VER could reverse the multidrug resistance efficiently and enhance the therapeutic effect. Therefore, the inhibition ratios of MCF-7/ADR resistant cancer cell treated by FA-poly (DOX+VER) were almost more than 30% higher than those of FA-polyDOX after 48h and 72h. Furthermore, the conjugation of FA could lead the co-delivery systems actively targeting into the FA receptor over-expressing cancer cells in addition to the passive accumulation of the assembly in tumor tissues. Importantly, the prepared mPEG2K-PCL4K-PGA1K-FA assembly showed high pH-sensitive property, which made the drugs mostly released in tumor tissue (acid environment) than in physiological environment (neutral environment). In summary, the as-prepared co-delivery system FA-poly(DOX+VER) demonstrated a high efficiency in reversing the multidrug resistance and targeting FA receptor to improve the anticancer effect of DOX in MCF-7/ADR resistant cells.
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Affiliation(s)
- Nuannuan Li
- School of Pharmaceutical Science, Shandong University, 44 West Wenhua Road, Jinan, Shandong Province 250012, PR China
| | - Chunzhi Huang
- School of Pharmaceutical Science, Shandong University, 44 West Wenhua Road, Jinan, Shandong Province 250012, PR China
| | - Yuxia Luan
- School of Pharmaceutical Science, Shandong University, 44 West Wenhua Road, Jinan, Shandong Province 250012, PR China.
| | - Aixin Song
- Key Lab of Colloid & Interface Chemistry, Shandong University, Ministry of Education, 250100, PR China
| | - Yunmei Song
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5000, Australia
| | - Sanjay Garg
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA 5000, Australia
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79
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Mucoadhesive acrylated block copolymers micelles for the delivery of hydrophobic drugs. Colloids Surf B Biointerfaces 2016; 139:42-51. [DOI: 10.1016/j.colsurfb.2015.11.044] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 10/10/2015] [Accepted: 11/24/2015] [Indexed: 11/24/2022]
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80
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Poloxamer-hydroxyethyl cellulose-α-cyclodextrin supramolecular gels for sustained release of griseofulvin. Int J Pharm 2016; 500:11-9. [DOI: 10.1016/j.ijpharm.2016.01.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/07/2016] [Accepted: 01/08/2016] [Indexed: 01/24/2023]
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81
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Raskin MM, Schlachet I, Sosnik A. Mucoadhesive nanogels by ionotropic crosslinking of chitosan-g-oligo(NiPAam) polymeric micelles as novel drug nanocarriers. Nanomedicine (Lond) 2016; 11:217-33. [PMID: 26786232 DOI: 10.2217/nnm.15.191] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
AIM To investigate a novel kind of mucoadhesive nanogel based on the supramolecular aggregation of chitosan-g-oligo(N-isopropylacrylamide) copolymers. MATERIALS & METHODS Copolymers were synthesized by the graft-free radical polymerization of N-isopropylacrylamide on chitosan. The aggregation was studied by dynamic light scattering and nanoparticle tracking analysis (NTA), the nanostructure by transmission electron microscopy(TEM)/cryo-TEM, the mucoadhesiveness in vitro with mucin and the cytocompatibility in Caco2 cells. RESULTS Copolymers (36-74% w/w N-isopropylacrylamide content) showed critical micellar concentration between 2.0 and 40.0 × 10(-3)% w/v and micelles were nanometric and positively charged. Physical stabilization was achieved with ionotropic crosslinking. TEM/cryo-TEM revealed multimicellar aggregates with good mucoadhesion and cytocompatibility properties. Micellar systems (1-10% w/v) increased the solubility of efavirenz up to 1249-fold. CONCLUSION Results support the potential of these nano-drug delivery systems for improved mucosal administration of hydrophobic drugs.
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Affiliation(s)
- Maya Menaker Raskin
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science & Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Inbar Schlachet
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science & Engineering, Technion-Israel Institute of Technology, Haifa, Israel
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science & Engineering, Technion-Israel Institute of Technology, Haifa, Israel.,Russell Berrie Nanotechnology Institute (RBNI), Technion-Israel Institute of Technology, Technion City, Haifa, Israel
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82
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Saneja A, Nehate C, Alam N, Gupta PN. Recent Advances in Chitosan-Based Nanomedicines for Cancer Chemotherapy. SPRINGER SERIES ON POLYMER AND COMPOSITE MATERIALS 2016. [DOI: 10.1007/978-81-322-2511-9_9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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83
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Zhang J, Chen K, Ding Y, Xin X, Li W, Zhang M, Hu H, Qiao M, Zhao X, Chen D. Self-assembly of pH-responsive dextran-g-poly(lactide-co-glycolide)-g-histidine copolymer micelles for intracellular delivery of paclitaxel and its antitumor activity. RSC Adv 2016. [DOI: 10.1039/c5ra22463b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, dextran (DX) was conjugated with poly(lactide-co-glycolide) (PLGA) and histidine (His) to prepare a pH-responsive nanocarrier, dextran-g-poly(lactide-co-glycolide)-g-histidine (HDP) micelles, for the delivery of antitumor drugs.
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Affiliation(s)
- Jiulong Zhang
- Department of Traditional Chinese Materia Medica
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Kang Chen
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Ying Ding
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Xiu Xin
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Wenpan Li
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Mengjun Zhang
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Haiyang Hu
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Mingxi Qiao
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Xiuli Zhao
- Department of Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Dawei Chen
- Department of Traditional Chinese Materia Medica
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
- Department of Pharmaceutics
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84
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Zhang L, Chen Z, Wang H, Wu S, Zhao K, Sun H, Kong D, Wang C, Leng X, Zhu D. Preparation and evaluation of PCL–PEG–PCL polymeric nanoparticles for doxorubicin delivery against breast cancer. RSC Adv 2016. [DOI: 10.1039/c6ra04687h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
DOX-loaded polymeric NPs based on PCL–PEG–PCL triblock copolymers were successfully prepared and showed highly efficient targeting and accumulation in tumor via EPR effect. The prepared NPs would be a promising nanosized DDS for cancer therapy.
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85
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Murshid N, Wang X. Iron-Carbonyl Aqueous Vesicles (MCsomes) by Hydration of [Fe(CO){CO(CH2)5CH3}(Cp)(PPh3)] (FpC6): Highly Integrated Colloids with Aggregation-Induced Self-Enhanced IR Absorption (AI-SEIRA). Chemistry 2015; 21:19223-30. [PMID: 26563745 DOI: 10.1002/chem.201502121] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Indexed: 11/11/2022]
Abstract
Self-assembly of hydrophobic molecules into aqueous colloids contradicts common chemical intuition, but has been achieved through hydration of [Fe(CO){CO(CH2)5CH3}(Cp)(PPh3)] (FpC6). FpC6 has no surface activity, no NMR signals in D2O and no critical aggregation concentration (CAC) in H2O. The molecule, however, contains both acyl and terminal CO groups that are prone to being hydrated. By adding water to a solution in THF, self-assembly of FpC6 can be initiated through water-carbonyl interactions (WCIs) with the highly polarized acyl CO groups. This aggregation subsequently enhances the hydration of the acyl CO groups and also induces the WCI of otherwise unhydrated terminal CO groups. The resultant metal-carbonyl aggregates have been proved to be bilayer vesicles with iron complexes exposed towards water and alkyl chains forming inner walls (MCsomes). These MCsomes show high structure integration upon dilution due to the hydrophobic nature of the building blocks. The highly polarized CO groups on the surface of the MCsomes result in a negative zeta potential (-65 mV) and create a local electric field, which significantly enhances the IR absorption of CO groups by more than 100-fold. This is the first discovery of aggregation-induced self-enhanced IR absorption (AI-SRIRA) without the assistant of external dielectric substrates. Highly integrated MCsomes are, therefore, promising as a novel group of materials, for example, for IR-based sensing and imaging.
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Affiliation(s)
- Nimer Murshid
- Department of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue west, Waterloo, Ontario, N2L 3G1 (Canada)
| | - Xiaosong Wang
- Department of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue west, Waterloo, Ontario, N2L 3G1 (Canada).
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Zhang Y, Chan JW, Moretti A, Uhrich KE. Designing polymers with sugar-based advantages for bioactive delivery applications. J Control Release 2015; 219:355-368. [PMID: 26423239 PMCID: PMC4656084 DOI: 10.1016/j.jconrel.2015.09.053] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/22/2015] [Accepted: 09/25/2015] [Indexed: 01/18/2023]
Abstract
Sugar-based polymers have been extensively explored as a means to increase drug delivery systems' biocompatibility and biodegradation. Here,we review he use of sugar-based polymers for drug delivery applications, with a particular focus on the utility of the sugar component(s) to provide benefits for drug targeting and stimuli responsive systems. Specifically, numerous synthetic methods have been developed to reliably modify naturally-occurring polysaccharides, conjugate sugar moieties to synthetic polymer scaffolds to generate glycopolymers, and utilize sugars as a multifunctional building block to develop sugar-linked polymers. The design of sugar-based polymer systems has tremendous implications on both the physiological and biological properties imparted by the saccharide units and are unique from synthetic polymers. These features include the ability of glycopolymers to preferentially target various cell types and tissues through receptor interactions, exhibit bioadhesion for prolonged residence time, and be rapidly recognized and internalized by cancer cells. Also discussed are the distinct stimuli-sensitive properties of saccharide-modified polymers to mediate drug release under desired conditions. Saccharide-based systems with inherent pH- and temperature-sensitive properties, as well as enzyme-cleavable polysaccharides for targeted bioactive delivery, are covered. Overall, this work emphasizes inherent benefits of sugar-containing polymer systems for bioactive delivery.
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Affiliation(s)
- Yingyue Zhang
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA
| | - Jennifer W Chan
- Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA
| | - Alysha Moretti
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA
| | - Kathryn E Uhrich
- Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, USA; Department of Biomedical Engineering, Rutgers University, 599 Taylor Road, Piscataway, NJ 08854, USA.
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87
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Sosnik A, Imperiale JC, Vázquez-González B, Raskin MM, Muñoz-Muñoz F, Burillo G, Cedillo G, Bucio E. Mucoadhesive thermo-responsive chitosan- g -poly( N -isopropylacrylamide) polymeric micelles via a one-pot gamma-radiation-assisted pathway. Colloids Surf B Biointerfaces 2015; 136:900-7. [DOI: 10.1016/j.colsurfb.2015.10.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/20/2015] [Accepted: 10/26/2015] [Indexed: 02/08/2023]
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88
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Calderón M, Sosnik A. Polymeric soft nanocarriers as smart drug delivery systems: State-of-the-art and future perspectives. Biotechnol Adv 2015; 33:1277-8. [DOI: 10.1016/j.biotechadv.2015.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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89
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Falzarano MS, Scotton C, Passarelli C, Ferlini A. Duchenne Muscular Dystrophy: From Diagnosis to Therapy. Molecules 2015; 20:18168-84. [PMID: 26457695 PMCID: PMC6332113 DOI: 10.3390/molecules201018168] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/15/2015] [Accepted: 09/28/2015] [Indexed: 12/28/2022] Open
Abstract
Duchenne muscular dystrophy (DMD) is an X-linked inherited neuromuscular disorder due to mutations in the dystrophin gene. It is characterized by progressive muscle weakness and wasting due to the absence of dystrophin protein that causes degeneration of skeletal and cardiac muscle. The molecular diagnostic of DMD involves a deletions/duplications analysis performed by quantitative technique such as microarray-based comparative genomic hybridization (array-CGH), Multiple Ligation Probe Assay MLPA. Since traditional methods for detection of point mutations and other sequence variants require high cost and are time consuming, especially for a large gene like dystrophin, the use of next-generation sequencing (NGS) has become a useful tool available for clinical diagnosis. The dystrophin gene is large and finely regulated in terms of tissue expression, and RNA processing and editing includes a variety of fine tuned processes. At present, there are no effective treatments and the steroids are the only fully approved drugs used in DMD therapy able to slow disease progression. In the last years, an increasing variety of strategies have been studied as a possible therapeutic approach aimed to restore dystrophin production and to preserve muscle mass, ameliorating the DMD phenotype. RNA is the most studied target for the development of clinical strategies and Antisense Oligonucleotides (AONs) are the most used molecules for RNA modulation. The identification of delivery system to enhance the efficacy and to reduce the toxicity of AON is the main purpose in this area and nanomaterials are a very promising model as DNA/RNA molecules vectors. Dystrophinopathies therefore represent a pivotal field of investigation, which has opened novel avenues in molecular biology, medical genetics and novel therapeutic options.
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Affiliation(s)
- Maria Sofia Falzarano
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, 44121 Italy.
| | - Chiara Scotton
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, 44121 Italy.
| | | | - Alessandra Ferlini
- Unit of Medical Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, 44121 Italy.
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90
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Glisoni RJ, Quintana L SS, Molina M, Calderón M, Moglioni AG, Sosnik A. Chitosan-g-oligo(epsilon-caprolactone) polymeric micelles: microwave-assisted synthesis and physicochemical and cytocompatibility characterization. J Mater Chem B 2015; 3:4853-4864. [DOI: 10.1039/c5tb00594a] [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
Mucoadhesive chitosan-g-oligo(epsilon-caprolactone) polymeric micelles were synthesized by a microwave-assisted technique and fully characterized in vitro.
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Affiliation(s)
- Romina J. Glisoni
- NANOBIOTEC
- Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Buenos Aires
- Argentina
| | - Silvina S. Quintana L
- IQUIMEFA
- Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Buenos Aires
- Argentina
| | - María Molina
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- Berlin
- Germany
| | - Marcelo Calderón
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- Berlin
- Germany
| | - Albertina G. Moglioni
- IQUIMEFA
- Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Buenos Aires
- Argentina
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science
- Department of Materials Science and Engineering
- Technion-Israel Institute of Technology
- Haifa
- Israel
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