101
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Lee DJ. Intraocular Implants for the Treatment of Autoimmune Uveitis. J Funct Biomater 2015; 6:650-66. [PMID: 26264035 PMCID: PMC4598676 DOI: 10.3390/jfb6030650] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 07/21/2015] [Accepted: 07/27/2015] [Indexed: 12/15/2022] Open
Abstract
Uveitis is the third leading cause of blindness in developed countries. Currently, the most widely used treatment of non-infectious uveitis is corticosteroids. Posterior uveitis and macular edema can be treated with intraocular injection of corticosteroids, however, this is problematic in chronic cases because of the need for repeat injections. Another option is systemic immunosuppressive therapies that have their own undesirable side effects. These systemic therapies result in a widespread suppression of the entire immune system, leaving the patient susceptible to infection. Therefore, an effective localized treatment option is preferred. With the recent advances in bioengineering, biodegradable polymers that allow for a slow sustained-release of a medication. These advances have culminated in drug delivery implants that are food and drug administration (FDA) approved for the treatment of non-infectious uveitis. In this review, we discuss the types of ocular implants available and some of the polymers used, implants used for the treatment of non-infectious uveitis, and bioengineered alternatives that are on the horizon.
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Affiliation(s)
- Darren J Lee
- Department of Ophthalmology/Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd, DMEI PA404, Oklahoma City, OK 73104, USA.
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102
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Gröschel AH, Müller AHE. Self-assembly concepts for multicompartment nanostructures. NANOSCALE 2015; 7:11841-76. [PMID: 26123217 DOI: 10.1039/c5nr02448j] [Citation(s) in RCA: 236] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Compartmentalization is ubiquitous to many biological and artificial systems, be it for the separate storage of incompatible matter or to isolate transport processes. Advancements in the synthesis of sequential block copolymers offer a variety of tools to replicate natural design principles with tailor-made soft matter for the precise spatial separation of functionalities on multiple length scales. Here, we review recent trends in the self-assembly of amphiphilic block copolymers to multicompartment nanostructures (MCNs) under (semi-)dilute conditions, with special emphasis on ABC triblock terpolymers. The intrinsic immiscibility of connected blocks induces short-range repulsion into discrete nano-domains stabilized by a third, soluble block or molecular additive. Polymer blocks can be synthesized from an arsenal of functional monomers directing self-assembly through packing frustration or response to various fields. The mobility in solution further allows the manipulation of self-assembly processes into specific directions by clever choice of environmental conditions. This review focuses on practical concepts that direct self-assembly into predictable nanostructures, while narrowing particle dispersity with respect to size, shape and internal morphology. The growing understanding of underlying self-assembly mechanisms expands the number of experimental concepts providing the means to target and manipulate progressively complex superstructures.
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Affiliation(s)
- André H Gröschel
- Molecular Materials, Department of Applied Physics, Aalto University School of Science, FIN-00076 Aalto, Espoo, Finland.
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103
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Shaker MA, Younes HM. Photo-irradiation paradigm: Mapping a remarkable facile technique used for advanced drug, gene and cell delivery. J Control Release 2015; 217:10-26. [PMID: 26184048 DOI: 10.1016/j.jconrel.2015.07.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 07/02/2015] [Accepted: 07/03/2015] [Indexed: 12/13/2022]
Abstract
Undoubtedly, the progression of photo-irradiation technique has provided a smart engineering tool for the state-of-the-art biomaterials that guide the biomedical and therapeutic domains for promoting the modern pharmaceutical industry. Many investigators had exploited such a potential technique to create/ameliorate numerous pharmaceutical carriers. These carriers show promising applications that vary from small drug to therapeutic protein delivery and from gene to living cell encapsulation design. Harmony between the properties of precisely engineered precursors and the formed network structure broadens the investigator's intellect for both brilliant creations and effective applications. As well, controlling photo-curing at the formulation level, through manipulating the absorption of light stimuli, photoinitiator system and photo-responsive precursor, facilitates the exploration of novel distinctive biomaterials. Discussion of utilizing different photo-curing procedures in designing/formulation of different pharmaceutical carriers is the main emphasis of this review. In addition, recent applications of these intelligent techniques in targeted, controlled, and sustained drug delivery with understanding of photo-irradiation concept and mechanism are illustrated.
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Affiliation(s)
- Mohamed A Shaker
- Pharmaceutics Department, College of Pharmacy, PO Box 30040, Taibah University, Al Madina Al Munawara, Saudi Arabia; Pharmaceutics Department, Faculty of Pharmacy, Helwan University, Cairo, Egypt.
| | - Husam M Younes
- Pharmaceutics & Polymeric Drug Delivery Research Lab (PPDDRL), College of Pharmacy, PO Box 2713, Qatar University, Doha, Qatar
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104
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Nguyen CT, Tran TH, Amiji M, Lu X, Kasi RM. Redox-sensitive nanoparticles from amphiphilic cholesterol-based block copolymers for enhanced tumor intracellular release of doxorubicin. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 11:2071-82. [PMID: 26169153 DOI: 10.1016/j.nano.2015.06.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 06/10/2015] [Accepted: 06/20/2015] [Indexed: 11/18/2022]
Abstract
UNLABELLED A novel amphiphilic cholesterol-based block copolymer comprised of a polymethacrylate bearing cholesterol block and a polyethylene glycol block with reducible disulfide bonds (PC5MA-SS-PEO) was synthesized and evaluated as a redox-sensitive nanoparticulate delivery system. The self-assembled PC5MA-SS-PEO nanoparticles (SS-NPs) encapsulated the anticancer drug doxorubicin (DOX) with high drug loading (18.2% w/w) and high encapsulation efficiency (94.9%). DOX-encapsulated PC5MA-SS-PEO self-assembled nanoparticles (DOX-encapsulated SS-NPs) showed excellent stability and exhibited a rapid DOX release in response to dithiothreitol reductive condition. Importantly, following internalization by lung cancer cells, the reducible DOX-encapsulated SS-NPs achieved higher cytotoxicity than the non-reducible thioester NPs whereas blank nanoparticles were non-cytotoxic. Furthermore, in vivo imaging studies in tumor-bearing severe combined immunodeficiency (SCID) mice showed that the nanoparticles preferentially accumulated in tumor tissue with remarkably reduced accumulation in the healthy non-target organs. The results indicated that the SS-NPs may be a promising platform for cancer-cell specific delivery of hydrophobic anticancer drugs. FROM THE CLINICAL EDITOR The use of nanocarriers for drug delivery against tumors has been under intense research. One problem of using carrier system is the drug release kinetics at tumor site. In this article, the authors continued their previous study in the development of an amphiphilic cholesterol-based block copolymer with redox-sensitive modification, so that the payload drug could be released in response to the microenvironment. The interesting results should provide a new direction for designing future novel nanocarrier systems.
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Affiliation(s)
- Chi Thanh Nguyen
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT
| | - Thanh Huyen Tran
- Department of Pharmaceutical Sciences, School of Pharmacy, Bouvé College of Health Sciences, Northeastern University, Boston, MA
| | - Mansoor Amiji
- Department of Pharmaceutical Sciences, School of Pharmacy, Bouvé College of Health Sciences, Northeastern University, Boston, MA
| | - Xiuling Lu
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT; Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT.
| | - Rajeswari M Kasi
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT; Department of Chemistry, University of Connecticut, Storrs, CT.
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105
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Qin J, Liu Q, Zhang J, Chen J, Chen S, Zhao Y, Du J. Rationally Separating the Corona and Membrane Functions of Polymer Vesicles for Enhanced T₂ MRI and Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14043-14052. [PMID: 26046951 DOI: 10.1021/acsami.5b03222] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is an important challenge to in situ grow ultrafine super-paramagnetic iron oxide nanoparticles (SPIONs) in drug carriers such as polymer vesicles (also called polymersomes) while keeping their biodegradability for enhanced T2-weighted magnetic resonance imaging (MRI) and drug delivery. Herein, we present a new strategy by rationally separating the corona and membrane functions of polymer vesicles to solve the above problem. We designed a poly(ethylene oxide)-block-poly(ε-caprolactone)-block-poly(acrylic acid) (PEO43-b-PCL98-b-PAA25) triblock copolymer and self-assembled it into polymer vesicle. The PAA chains in the vesicle coronas are responsible for the in situ nanoprecipitation of ultrafine SPIONs, while the vesicle membrane composed of PCL is biodegradable. The SPIONs-decorated vesicle is water-dispersible, biocompatible, and slightly cytotoxic to normal human cells. Dynamic light scattering, transmission electron microscopy, energy disperse spectroscopy, and vibrating sample magnetometer revealed the formation of ultrafine super-paramagnetic Fe3O4 nanoparticles (1.9 ± 0.3 nm) in the coronas of polymer vesicles. Furthermore, the CCK-8 assay revealed low cytotoxicity of vesicles against normal L02 liver cells without and with Fe3O4 nanoparticles. The in vitro and in vivo MRI experiments confirmed the enhanced T2-weighted MRI sensitivity and excellent metastasis in mice. The loading and release experiments of an anticancer drug, doxorubicin hydrochloride (DOX·HCl), indicated that the Fe3O4-decorated magnetic vesicles have potential applications as a nanocarrier for anticancer drug delivery. Moreover, the polymer vesicle is degradable in the presence of enzyme such as Pseudomonas lipases, and the ultrafine Fe3O4 nanoparticles in the vesicle coronas are confirmed to be degradable under weakly acidic conditions. Overall, this decoration-in-vesicle-coronas strategy provides us with a new insight for preparing water-dispersible ultrafine super-paramagnetic Fe3O4 nanoparticles with promising theranostic applications in biomedicine.
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Affiliation(s)
- Jingya Qin
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Qiuming Liu
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Junxue Zhang
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Jing Chen
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Shuai Chen
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
| | - Yao Zhao
- §Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Analytical Chemistry for Living Biosystems; Beijing Center for Mass Spectrometry; Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jianzhong Du
- †School of Materials Science and Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China
- ‡Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Shanghai 200072, China
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106
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Hu Y, Darcos V, Monge S, Li S. Thermo-responsive drug release from self-assembled micelles of brush-like PLA/PEG analogues block copolymers. Int J Pharm 2015; 491:152-61. [PMID: 26095914 DOI: 10.1016/j.ijpharm.2015.06.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/08/2015] [Accepted: 06/13/2015] [Indexed: 11/26/2022]
Abstract
Thermo-responsive brush-like amphiphilic poly[2-(2-methoxyethoxy) ethyl methacrylate-co-oligo(ethylene glycol) methacrylate]-b-poly(l-lactide)-b-poly[2-(2-methoxyethoxy) ethyl methacrylate-co-oligo(ethylene glycol) methacrylate] [P(MEO2MA-co-OEGMA)-b-PLLA-b-P(MEO2MA-co-OEGMA)] triblock copolymers were synthesized by atom transfer radical polymerization of MEO2MA and OEGMA co-monomers using a α,ω-Bromopropionyl poly(l-lactide) (Br-PLLA-Br) macroinitiator. The resulting copolymers with MEO2MA/OEGMA molar ratio ranging from 79/21 to 42/58 were characterized by (1)H nuclear magnetic resonance and size exclusion chromatography. Thermo-responsive micelles were obtained by self-assembly of copolymers in aqueous medium. The micelles are spherical in shape with sizes varying from 20.7 to 102.5 nm. A hydrophobic anticancer drug, curcumin, was encapsulated in micelles by using membrane hydration method. The properties of drug loaded micelles were determined by dynamic light scattering, transmission electron microscopy and lower critical solution temperature (LCST) measurements. The micelles size decreases from 102.5 nm for blank micelles to 37.6 nm with 10.8% drug loading, suggesting that the drug plays an important role in the micellization procedure. The LCST decreases from 45.1°C for blank micelles to 40.6 and 38.3°C with 5.9 and 10.8% drug loading, respectively. In vitro drug release was performed in pH 7.4 PBS at different temperatures. Data show that the release rate was significantly enhanced above the LCST comparing with that below the LCST. The amount of released drug at 41°C was ca. 20% higher than that at 37°C. Burst-like release was depressed due to enhanced interaction between drug with hydrophobic PLA and PMA chains.
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Affiliation(s)
- Yanfei Hu
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247-Equipe Biopolymères Artificiels, Université de Montpellier, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier, France
| | - Vincent Darcos
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247-Equipe Biopolymères Artificiels, Université de Montpellier, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier, France
| | - Sophie Monge
- Institut Charles Gerhardt, UMR CNRS 5253-Equipe Ingénierie et Architectures Macromoléculaires, Université de Montpellier, cc1702, Place Eugène Bataillon, 34095 Montpellier, France
| | - Suming Li
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247-Equipe Biopolymères Artificiels, Université de Montpellier, 15 Avenue Charles Flahault, BP 14491, 34093 Montpellier, France.
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107
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Dual Location Reduction-Responsive Degradable Nanocarriers: A New Strategy for Intracellular Anticancer Drug Delivery with Accelerated Release. ACTA ACUST UNITED AC 2015. [DOI: 10.1021/bk-2015-1188.ch017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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108
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Raghupathi KR, Sridhar U, Byrne K, Raghupathi K, Thayumanavan S. Influence of backbone conformational rigidity in temperature-sensitive amphiphilic supramolecular assemblies. J Am Chem Soc 2015; 137:5308-11. [PMID: 25893806 PMCID: PMC4916844 DOI: 10.1021/jacs.5b02108] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular design features that endow amphiphilic supramolecular assemblies with a unique temperature-sensitive transition have been investigated. We find that conformational rigidity in the backbone is an important feature for eliciting this feature. We also find that intramolecular hydrogen-bonding can induce such rigidity in amphiphile backbone. Guest encapsulation stability of these assemblies was found to be significantly altered within a narrow temperature window, which correlates with the temperature-sensitive size transition of the molecular assembly. Molecular design principles demonstrated here could have broad implications in developing future temperature-responsive systems.
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Affiliation(s)
- Krishna R. Raghupathi
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Uma Sridhar
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Kevin Byrne
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Kishore Raghupathi
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - S. Thayumanavan
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States
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109
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Luo YL, Wang Y, Wang X, Xu F, Chen YS. Thermosensitive tribrachia star-shaped s-P(NIPAM-co-DMAM) random copolymer micelle aggregates: Preparation, characterization, and drug release applications. J Biomater Appl 2015; 30:662-76. [PMID: 25926671 DOI: 10.1177/0885328215584293] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Tribrachia star-shaped random copolymers with tunable thermosensitive phase transition temperature were designed and synthesized via a simple one-pot ammonolysis reaction approach with trimesic acid as cores. The self-assembly micellization behavior of the copolymers in aqueous solution was examined by surface tension, UV-vis transmittance, transmission electron microscope, and dynamic light scattering measurements, etc. The results indicated that the resultant copolymers formed thermosensitive micelle aggregates through hydrophobic interactions among the isopropyl groups of poly(N-isopropylacrylamide) PNIPAM chains and inter-star association at a polymer concentration above critical aggregation concentrations from 4.06 to 6.55 mg L(-1), with a cloud point range from 36.6℃ to 52.1℃, and homogeneously distributed micelle size below 200 nm. The arm length and the compositional ratios of the two comonomers had effect on physicochemical properties of the polymer micelle aggregates. Particularly, the cloud point values were enhanced as the (N,N-dimethylacrylamide) DMAM monomer was introduced and reached to 36.6℃ and 41.0℃-44.7℃ when the mass ratio of NIPAM to DMAM was 90:10 and 80:20, respectively. The thermo-triggered drug release and cytotoxicity were evaluated to confirm the applicability of the random copolymer micelle aggregates as novel drug targeted release carriers.
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Affiliation(s)
- Yan-Ling Luo
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, P. R. China
| | - Yuan Wang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, P. R. China
| | - Xuan Wang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, P. R. China
| | - Feng Xu
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, P. R. China
| | - Ya-Shao Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, P. R. China
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110
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Morimoto N, Muramatsu K, Nomura SIM, Suzuki M. Trading polymeric microspheres: Exchanging DNA molecules via microsphere interaction. Colloids Surf B Biointerfaces 2015; 128:94-99. [DOI: 10.1016/j.colsurfb.2015.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 12/18/2014] [Accepted: 02/08/2015] [Indexed: 11/30/2022]
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111
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Wang HC, Zhang Y, Possanza CM, Zimmerman SC, Cheng J, Moore JS, Harris K, Katz JS. Trigger chemistries for better industrial formulations. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6369-6382. [PMID: 25768973 DOI: 10.1021/acsami.5b00485] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In recent years, innovations and consumer demands have led to increasingly complex liquid formulations. These growing complexities have provided industrial players and their customers access to new markets through product differentiation, improved performance, and compatibility/stability with other products. One strategy for enabling more complex formulations is the use of active encapsulation. When encapsulation is employed, strategies are required to effect the release of the active at the desired location and time of action. One particular route that has received significant academic research effort is the employment of triggers to induce active release upon a specific stimulus, though little has translated for industrial use to date. To address emerging industrial formulation needs, in this review, we discuss areas of trigger release chemistries and their applications specifically as relevant to industrial use. We focus the discussion on the use of heat, light, shear, and pH triggers as applied in several model polymeric systems for inducing active release. The goal is that through this review trends will emerge for how technologies can be better developed to maximize their value through industrial adaptation.
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Affiliation(s)
- Hsuan-Chin Wang
- †Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yanfeng Zhang
- ‡Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Catherine M Possanza
- †Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Steven C Zimmerman
- †Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jianjun Cheng
- ‡Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jeffrey S Moore
- †Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- §Beckman Institute for Advanced Science and Technology, Urbana, Illinois 61801, United States
| | - Keith Harris
- ∥Formulation Science, Corporate Research and Development, The Dow Chemical Company, Midland, Michigan 48667, United States
| | - Joshua S Katz
- ⊥Formulation Science, Corporate Research and Development, The Dow Chemical Company, Collegeville, Pennsylvania 19426, United States
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112
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Smith JA, Leonardi T, Huang B, Iraci N, Vega B, Pluchino S. Extracellular vesicles and their synthetic analogues in aging and age-associated brain diseases. Biogerontology 2015; 16:147-85. [PMID: 24973266 PMCID: PMC4578234 DOI: 10.1007/s10522-014-9510-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/16/2014] [Indexed: 02/06/2023]
Abstract
Multicellular organisms rely upon diverse and complex intercellular communications networks for a myriad of physiological processes. Disruption of these processes is implicated in the onset and propagation of disease and disorder, including the mechanisms of senescence at both cellular and organismal levels. In recent years, secreted extracellular vesicles (EVs) have been identified as a particularly novel vector by which cell-to-cell communications are enacted. EVs actively and specifically traffic bioactive proteins, nucleic acids, and metabolites between cells at local and systemic levels, modulating cellular responses in a bidirectional manner under both homeostatic and pathological conditions. EVs are being implicated not only in the generic aging process, but also as vehicles of pathology in a number of age-related diseases, including cancer and neurodegenerative and disease. Thus, circulating EVs-or specific EV cargoes-are being utilised as putative biomarkers of disease. On the other hand, EVs, as targeted intercellular shuttles of multipotent bioactive payloads, have demonstrated promising therapeutic properties, which can potentially be modulated and enhanced through cellular engineering. Furthermore, there is considerable interest in employing nanomedicinal approaches to mimic the putative therapeutic properties of EVs by employing synthetic analogues for targeted drug delivery. Herein we describe what is known about the origin and nature of EVs and subsequently review their putative roles in biology and medicine (including the use of synthetic EV analogues), with a particular focus on their role in aging and age-related brain diseases.
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Affiliation(s)
- J A Smith
- Department of Clinical Neurosciences, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge, CB2 0PY, UK
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113
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Gao Y, Qiu H, Zhou H, Li X, Harniman R, Winnik MA, Manners I. Crystallization-Driven Solution Self-Assembly of Block Copolymers with a Photocleavable Junction. J Am Chem Soc 2015; 137:2203-6. [DOI: 10.1021/ja512968b] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Yang Gao
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Huibin Qiu
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Hang Zhou
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Xiaoyu Li
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Robert Harniman
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
| | - Mitchell A. Winnik
- Department
of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Ian Manners
- School
of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom
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114
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Ji R, Cheng J, Song CC, Du FS, Liang DH, Li ZC. Acid-Sensitive Polypseudorotaxanes Based on Ortho Ester-Modified Cyclodextrin and Pluronic F-127. ACS Macro Lett 2015; 4:65-69. [PMID: 35596374 DOI: 10.1021/mz5007359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We demonstrate a new type of acid-sensitive amphiphilic polypseudorotaxanes (PPRs) formed via inclusion complexation between Pluronic F127 and the hydrophobic β-cyclodextrin (CD) derivative in alcoholic solvents. The 6-OH ortho ester-substituted hydrophobic β-CD derivative (EMD-CD) was prepared by "click" reaction of β-CD with 2-ethylidene-4-methyl-1,3-dioxalane under mild conditions. The water-insoluble EMD-CD (host) is capable of forming PPRs with F127 (guest) in ethanol or methanol but not in water, which is confirmed by 1H NMR, wide-angle X-ray diffraction, small-angle X-ray scattering, and the time-dependent threading kinetics. Depending on the host/guest ratio, the PPRs self-assembled into sheet-like structure or vesicular nanoparticles with different sizes in water. These PPR assemblies were stable at pH 8.4 but quickly dissociated into biocompatible products in neutral or in acidic buffers due to the hydrolysis of the ortho ester groups. Good biocompatibility, ease of fabrication, and extremely pH-sensitive character make the PPRs promising carriers for anticancer drug delivery. Moreover, the present work provides an alternative method for the preparation of PPRs composed of water-insoluble CD derivatives.
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Affiliation(s)
- Ran Ji
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Jing Cheng
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Cheng-Cheng Song
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Fu-Sheng Du
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - De-Hai Liang
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Zi-Chen Li
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
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115
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Lv LP, Zhao Y, Landfester K, Crespy D. Chemical encoding of amphiphilic copolymers for a dual controlled release from their assemblies. Polym Chem 2015. [DOI: 10.1039/c4py01159g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Amphiphilic random copolymers are designed to bear a corrosion inhibitor as cleavable side group, which can be released upon activation by chemical reduction.
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Affiliation(s)
- Li-Ping Lv
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | - Yi Zhao
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
| | | | - Daniel Crespy
- Max Planck Institute for Polymer Research
- 55128 Mainz
- Germany
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116
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Laskar P, Saha B, Ghosh SK, Dey J. PEG based random copolymer micelles as drug carriers: the effect of hydrophobe content on drug solubilization and cytotoxicity. RSC Adv 2015. [DOI: 10.1039/c4ra11479e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The effect of hydrophobe content on PEG based random polymeric micelles as drug carriers: a comparative study.
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Affiliation(s)
- Partha Laskar
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721 302
- India
| | - Biswajit Saha
- Department of Biotechnology
- Indian Institute of Technology
- Kharagpur-721 302
- India
| | - Sudip Kumar Ghosh
- Department of Biotechnology
- Indian Institute of Technology
- Kharagpur-721 302
- India
| | - Joykrishna Dey
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721 302
- India
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117
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Shi J, Xu Y, Wang X, Zhang L, Zhu J, Pang T, Bao X. Synthesis and evaluation of a novel Rhodamine B pyrene [2]rotaxane as an intracellular delivery agent for doxorubicin. Org Biomol Chem 2015; 13:7517-29. [DOI: 10.1039/c5ob00934k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
RhBPy [2]rotaxane has been demonstrated to be an efficient transport agent for delivering the cancer drug doxorubicin (DOX) into tumor cells.
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Affiliation(s)
- Jiaxin Shi
- Department of Biochemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P.R. China
| | - Yuan Xu
- Jiangsu Key Laboratory of Drug Screening and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P.R. China
| | - Xinlong Wang
- Department of Chemistry
- School of Chemical Engineering
- Nanjing University of Science & Technology
- Nanjing
- P.R. China
| | - Luyong Zhang
- Jiangsu Key Laboratory of Drug Screening and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P.R. China
| | - Jing Zhu
- Department of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- P.R. China
| | - Tao Pang
- Jiangsu Key Laboratory of Drug Screening and State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing
- P.R. China
| | - Xiaofeng Bao
- Department of Biochemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P.R. China
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118
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Zhang J, Zhang Y, Chen F, Zhang W, Zhao H. Self-assembly of photoswitchable diblock copolymers: salt-induced micellization and the influence of UV irradiation. Phys Chem Chem Phys 2015; 17:12215-21. [DOI: 10.1039/c5cp01560j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inorganic salts are able to induce micellization of PEG-b-PSPMA in a 10 : 1 DMF/water mixture upon UV irradiation. The complex formation between inorganic ions and MC isomers plays a key role in the self-assembly process.
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Affiliation(s)
- Jing Zhang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education, Department of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Yue Zhang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education, Department of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Feiyang Chen
- Key Laboratory of Functional Polymer Materials
- Ministry of Education, Department of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Weiyao Zhang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education, Department of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Hanying Zhao
- Key Laboratory of Functional Polymer Materials
- Ministry of Education, Department of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
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119
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Fu Q, Xu J, Ladewig K, Henderson TMA, Qiao GG. Degradable cross-linked polymer vesicles for the efficient delivery of platinum drugs. Polym Chem 2015. [DOI: 10.1039/c4py01123f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Nontoxic and acid-degradable polymer vesicles were synthesized as drug carriers. In vitro dose–response cytotoxicity studies suggested that the drug-loaded polymer vesicles were more efficient in delivering cis-platin into cancer cells compared to the internalization of the free drug.
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Affiliation(s)
- Q. Fu
- Polymer Science Group
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - J. Xu
- Polymer Science Group
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - K. Ladewig
- Polymer Science Group
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - T. M. A. Henderson
- Polymer Science Group
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
| | - G. G. Qiao
- Polymer Science Group
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Parkville
- Australia
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120
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Chen Q, Yu H, Wang L, ul Abdin Z, Chen Y, Wang J, Zhou W, Yang X, Khan RU, Zhang H, Chen X. Recent progress in chemical modification of starch and its applications. RSC Adv 2015. [DOI: 10.1039/c5ra10849g] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Starch has received much attention as a promising natural material both in biomedical fields and waste water treatment due to its unique biological and adsorptive properties.
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121
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Qiao ZY, Zhang D, Hou CY, Zhao SM, Liu Y, Gao YJ, Tan NH, Wang H. A pH-responsive natural cyclopeptide RA-V drug formulation for improved breast cancer therapy. J Mater Chem B 2015; 3:4514-4523. [PMID: 32262395 DOI: 10.1039/c5tb00445d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The co-encapsulation of RA-V cyclopeptide and SQ molecules in pH-sensitive PAE micelles for efficient tumor therapy and imaging in vitro and in vivo.
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Affiliation(s)
- Zeng-Ying Qiao
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing
- China
| | - Di Zhang
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing
- China
| | - Chun-Yuan Hou
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing
- China
| | - Si-Meng Zhao
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- China
| | - Ya Liu
- College of Marine Life Science
- Ocean University of China
- Qingdao
- China
| | - Yu-Juan Gao
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing
- China
| | - Ning-Hua Tan
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650201
- China
| | - Hao Wang
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing
- China
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122
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Soni SK, Sarkar S, Selvakannan PR, Sarkar D, Bhargava SK. Intrinsic therapeutic and biocatalytic roles of ionic liquid mediated self-assembled platinum–phytase nanospheres. RSC Adv 2015. [DOI: 10.1039/c5ra11273g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Intrinsic therapeutic and biocatalytic roles of ionic liquid mediated self-assembled phytase, platinum–phytase and platinum–phytase–curcumin nanospheres.
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Affiliation(s)
- Sarvesh K. Soni
- Centre for Advanced Materials and Industrial Chemistry
- School of Applied Sciences
- RMIT University
- Melbourne
- Australia
| | - Sampa Sarkar
- Centre for Advanced Materials and Industrial Chemistry
- School of Applied Sciences
- RMIT University
- Melbourne
- Australia
| | - P. R. Selvakannan
- Centre for Advanced Materials and Industrial Chemistry
- School of Applied Sciences
- RMIT University
- Melbourne
- Australia
| | - Dhiman Sarkar
- Combichem-Bioresource Centre
- National Chemical Laboratory
- Pune
- India
| | - Suresh K. Bhargava
- Centre for Advanced Materials and Industrial Chemistry
- School of Applied Sciences
- RMIT University
- Melbourne
- Australia
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123
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Zhu W, Wang Y, Cai X, Zha G, Luo Q, Sun R, Li X, Shen Z. Reduction-triggered release of paclitaxel from in situ formed biodegradable core-cross-linked micelles. J Mater Chem B 2015; 3:3024-3031. [DOI: 10.1039/c4tb01834f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We provide a facile strategy to prepare redox-responsive core-crosslinked micelles for the controlled release of paclitaxel.
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Affiliation(s)
- Weipu Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Ying Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Xia Cai
- Department of Oral and Maxillofacial Surgery
- The Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Guangyu Zha
- Department of Oral and Maxillofacial Surgery
- The Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Qiaojie Luo
- Department of Oral and Maxillofacial Surgery
- The Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Rui Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
| | - Xiaodong Li
- Department of Oral and Maxillofacial Surgery
- The Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006
| | - Zhiquan Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- People's Republic of China
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124
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Huang Z, Cang H, Huang R, Cai Z, Zhang H. Amphiphilic block copolymer poly(2-methacryloyloxyethyl phosphorylcholine) and poly(trimethylene carbonate): Preparation and for intracellular drug delivery. POLYMER SCIENCE SERIES B 2014. [DOI: 10.1134/s1560090415010042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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125
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Yasin MN, Svirskis D, Seyfoddin A, Rupenthal ID. Implants for drug delivery to the posterior segment of the eye: A focus on stimuli-responsive and tunable release systems. J Control Release 2014; 196:208-21. [DOI: 10.1016/j.jconrel.2014.09.030] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 09/28/2014] [Accepted: 09/30/2014] [Indexed: 12/21/2022]
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126
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Maity B, Chatterjee A, Ahmed SA, Seth D. Supramolecular interactions of nonsteroidal anti-inflammatory drug in nanochannels of molecular containers: a spectroscopic, thermogravimetric and microscopic investigation. Chemphyschem 2014; 15:3502-14. [PMID: 25146319 DOI: 10.1002/cphc.201402419] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Indexed: 11/11/2022]
Abstract
Supramolecular host-guest complexation between the nonsteroidal anti-inflammatory drug indomethacin (IMC) and molecular containers were investigated. The weakly fluorescent drug molecule becomes highly fluorescent on complexation with different molecular containers, and time-resolved fluorescence emission spectroscopy reveals that the lifetime components of IMC significantly increase in the presence of molecular containers, compared with the lifetimes in neat water. The respective solid host-guest complexes were synthesised and characterised by Fourier transform infrared and (1) H nuclear magnetic resonance spectroscopic analysis. Microscopy techniques were used to analyse modifications of the surface morphology, owing to the formation of supramolecular complexes. The effect of the molecular container on the optical properties of IMC has also been investigated to determine the effect of nanochannels of different size and structure.
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Affiliation(s)
- Banibrata Maity
- Department of Chemistry, Indian Institute of Technology Patna, Patliputra Colony, Patna 800013, Bihar (India), Fax: 91-612-2277383
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127
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Wen Y, Oh JK. Recent Strategies to Develop Polysaccharide-Based Nanomaterials for Biomedical Applications. Macromol Rapid Commun 2014; 35:1819-32. [DOI: 10.1002/marc.201400406] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 08/18/2014] [Indexed: 12/13/2022]
Affiliation(s)
- Yifen Wen
- Department of Chemistry and Biochemistry; Concordia University; Montreal Quebec Canada
| | - Jung Kwon Oh
- Department of Chemistry and Biochemistry; Concordia University; Montreal Quebec Canada
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128
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Cunningham A, Ko NR, Oh JK. Synthesis and reduction-responsive disassembly of PLA-based mono-cleavable micelles. Colloids Surf B Biointerfaces 2014; 122:693-700. [DOI: 10.1016/j.colsurfb.2014.08.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 07/30/2014] [Accepted: 08/02/2014] [Indexed: 12/21/2022]
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129
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Rocha L, Păiuş CM, Luca-Raicu A, Resmerita E, Rusu A, Moleavin IA, Hamel M, Branza-Nichita N, Hurduc N. Azobenzene based polymers as photoactive supports and micellar structures for applications in biology. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2014.06.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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130
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Bogomolova A, Keller S, Klingler J, Sedlak M, Rak D, Sturcova A, Hruby M, Stepanek P, Filippov SK. Self-assembly thermodynamics of pH-responsive amino-acid-based polymers with a nonionic surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11307-11318. [PMID: 25192406 DOI: 10.1021/la5031262] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The behavior of pH-responsive polymers poly(N-methacryloyl-l-valine) (P1), poly(N-methacryloyl-l-phenylalanine) (P2), and poly(N-methacryloylglycyne-l-leucine) (P3) has been studied in the presence of the nonionic surfactant Brij98. The pure polymers phase-separate in an acidic medium with critical pHtr values of 3.7, 5.5, and 3.4, respectively. The addition of the surfactant prevents phase separation and promotes reorganization of polymer molecules. The nature of the interaction between polymer and surfactant depends on the amino acid structure in the side chain of the polymer. This effect was investigated by dynamic light scattering, isothermal titration calorimetry, electrophoretic measurements, small-angle neutron scattering, and infrared spectroscopy. Thermodynamic analysis revealed an endothermic association reaction in P1/Brij98 mixture, whereas a strong exothermic effect was observed for P2/Brij98 and P3/Brij98. Application of regular solution theory for the analysis of experimental enthalpograms indicated dominant hydrophobic interactions between P1 and Brij98 and specific interactions for the P2/Brij98 system. Electrophoretic and dynamic light scattering measurements support the applicability of the theory to these cases. The specific interactions can be ascribed to hydrogen bonds formed between the carboxylic groups of the polymer and the oligo(ethylene oxide) head groups of the surfactant. Thus, differences in polymer-surfactant interactions between P1 and P2 polymers result in different structures of polymer-surfactant complexes. Specifically, small-angle neutron scattering revealed pearl-necklace complexes and "core-shell" structures for P1/Brij98 and P2/Brij98 systems, respectively. These results may help in the design of new pH-responsive site-specific micellar drug delivery systems or pH-responsive membrane-disrupting agents.
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Affiliation(s)
- Anna Bogomolova
- Institute of Macromolecular Chemistry AS CR, v.v.i, 162 06 Prague, Czech Republic
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131
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Bai Y, Hu J, Shen W, Hu X. Recent advances and potential applications of the photo-induced macroscopic response of self-assembled azopolymer in aqueous media. POLYM INT 2014. [DOI: 10.1002/pi.4726] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yu Bai
- Ninth Storey, Border X Block, Research Techno Plaza, Temasek Laboratories; Nanyang Technological University; 50 Nanyang Drive Singapore 637553 Singapore
| | - Jinhua Hu
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
| | - Wenming Shen
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
| | - Xiao Hu
- Ninth Storey, Border X Block, Research Techno Plaza, Temasek Laboratories; Nanyang Technological University; 50 Nanyang Drive Singapore 637553 Singapore
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
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132
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Jhaveri A, Deshpande P, Torchilin V. Stimuli-sensitive nanopreparations for combination cancer therapy. J Control Release 2014; 190:352-70. [DOI: 10.1016/j.jconrel.2014.05.002] [Citation(s) in RCA: 221] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 12/29/2022]
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133
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Wu W, Wang J, Lin Z, Li X, Li J. Tumor-acidity activated surface charge-conversion of polymeric nanocarriers for enhanced cell adhesion and targeted drug release. Macromol Rapid Commun 2014; 35:1679-84. [PMID: 25171076 DOI: 10.1002/marc.201400362] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 07/22/2014] [Indexed: 12/14/2022]
Abstract
The development of stimuli-responsive polymeric nanocarriers could significantly enhance drug bioavailability due to improved pharmacokinetics and biodistribution. However, in the drug delivery process, the poor cell uptake of drug-loaded carriers has greatly limited the therapeutic efficiency for anti-cancer applications. Herein, 2,3-dimethylmaleic anhydride (DMMA) is engineered into the well-defined biodegradable amphiphilic block copolymer poly(D,L-lactide)-block-poly(2-aminoethyl methacrylate) (PLA-b-PAEMA) to construct a tumor-acidity activated nanocarrier (PLA-b-PAEMA/DMMA) for potential tumor therapy. After the loading of positively charged DOX·HCl into the negatively charged corona structure through electrostatic attraction, this carrier is expected to prolong the blood circulation time and smartly convert surface charge from negative to positive for enhanced tumor cell uptake and targeted drug release. Furthermore, this carrier exhibits additional cytotoxicity for tumor cells after the tumor-acidity activated surface charge-conversion from negative to positive. Thus, this smart carrier is a feasible candidate for potential cancer therapy.
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Affiliation(s)
- Wei Wu
- College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
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134
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Yang B, Lv Y, Zhu JY, Han YT, Jia HZ, Chen WH, Feng J, Zhang XZ, Zhuo RX. A pH-responsive drug nanovehicle constructed by reversible attachment of cholesterol to PEGylated poly(l-lysine) via catechol-boronic acid ester formation. Acta Biomater 2014; 10:3686-95. [PMID: 24879311 DOI: 10.1016/j.actbio.2014.05.018] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 05/09/2014] [Accepted: 05/16/2014] [Indexed: 12/14/2022]
Abstract
The present work reports the construction of a drug delivery nanovehicle via a pH-sensitive assembly strategy for improved cellular internalization and intracellular drug liberation. Through spontaneous formation of boronate linkage in physiological conditions, phenylboronic acid-modified cholesterol was able to attach onto catechol-pending methoxypoly(ethylene glycol)-block-poly(l-lysine). This comb-type polymer can self-organize into a micellar nanoconstruction that is able to effectively encapsulate poorly water-soluble agents. The blank micelles exhibited negligible in vitro cytotoxicity, yet doxorubicin (DOX)-loaded micelles could effectively induce cell death at a level comparable to free DOX. Owing to the acid-labile feature of the boronate linkage, a reduction in environmental pH from pH 7.4 to 5.0 could trigger the dissociation of the nanoconstruction, which in turn could accelerate the liberation of entrapped drugs. Importantly, the blockage of endosomal acidification in HeLa cells by NH4Cl treatment significantly decreased the nuclear uptake efficiency and cell-killing effect mediated by the DOX-loaded nanoassembly, suggesting that acid-triggered destruction of the nanoconstruction is of significant importance in enhanced drug efficacy. Moreover, confocal fluorescence microscopy and flow cytometry assay revealed the effective internalization of the nanoassemblies, and their cellular uptake exhibited a cholesterol dose-dependent profile, indicating the contribution of introduced cholesterol functionality to the transmembrane process of the nanoassembly.
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Affiliation(s)
- Bin Yang
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yin Lv
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Jing-Yi Zhu
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yun-Tao Han
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Hui-Zhen Jia
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Wei-Hai Chen
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Jun Feng
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China.
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
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135
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Ko NR, Oh JK. Glutathione-Triggered Disassembly of Dual Disulfide Located Degradable Nanocarriers of Polylactide-Based Block Copolymers for Rapid Drug Release. Biomacromolecules 2014; 15:3180-9. [DOI: 10.1021/bm5008508] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Na Re Ko
- Department of Chemistry and
Biochemistry and Center for Nanoscience Research, Concordia University, Montreal, Quebec Canada H4B 1R6
| | - Jung Kwon Oh
- Department of Chemistry and
Biochemistry and Center for Nanoscience Research, Concordia University, Montreal, Quebec Canada H4B 1R6
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136
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Wang Y, Luo Q, Gao L, Gao C, Du H, Zha G, Li X, Shen Z, Zhu W. A facile strategy to prepare redox-responsive amphiphilic PEGylated prodrug with high drug loading content and low critical micelle concentration. Biomater Sci 2014; 2:1367-1376. [PMID: 32481913 DOI: 10.1039/c4bm00065j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A redox-responsive amphiphilic polymeric prodrug was synthesized in a facile way by polycondensation of oligo(ethylene glycol) with dicarboxylic acids including malic acid and 3,3'-dithiodipropionic acid , followed by esterification with ibuprofen, which was used as a model drug. Because of its amphiphilic nature and relatively high molecular weight, this polymeric prodrug can form stable micelles in aqueous media with a low critical micellar concentration (CMC). Free ibuprofen molecules can be steadily incorporated into the core of these micelles with a surprisingly high loading content (38.9 wt%), owing to hydrophobic interaction and π-π stacking with the ibuprofen moieties in the copolymer. The in vitro release results indicate that there was a relatively slow and sustained release of the conjugated ibuprofen moieties, while encapsulated ibuprofen molecules showed a rapid release. Furthermore, for both the conjugated ibuprofen and the encapsulated ibuprofen there was an accelerated release in the presence of 10 mM dl-dithiothreitol due to cleavage of the disulfide bonds, which lead to disassociation of the micelles. Notably, this prodrug was revealed to have excellent cell compatibilities via a cell counting kit-8 (CCK-8) assay. Confocal laser scanning microscope observations indicated that the micelles based on the polymeric prodrug can be taken up quickly by cells and present a redox-responsive drug release in cytoplasm. This kind of polymeric nanocarrier with a high drug loading content, low CMC, excellent biocompatibility and rapid response to a reductive environment may have tremendous scope in the area of controlled drug delivery.
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Affiliation(s)
- Ying Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China.
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137
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Tong R, Tang L, Ma L, Tu C, Baumgartner R, Cheng J. Smart chemistry in polymeric nanomedicine. Chem Soc Rev 2014; 43:6982-7012. [DOI: 10.1039/c4cs00133h] [Citation(s) in RCA: 155] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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138
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Bartovsky P, Ribes A, Agostini A, Benito A, Martínez-Máñez R. Delivery modulation in silica mesoporous supports via functionalization in the pore outlets with a Zn(II)–bis(2-pyridylmethyl)amine complex. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.01.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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139
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De A, Mishra S, Mozumdar S. Stimuli‐Responsive Smart Nanoparticles for Biomedical Application. Adv Healthc Mater 2014. [DOI: 10.1002/9781118774205.ch1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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140
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Chaudhary OJ, Ahmad NM. Photo-switchable azobenzene-functionalized block copolymers from atom transfer radical polymerizations. POLYMER SCIENCE SERIES B 2014. [DOI: 10.1134/s156009041402002x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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141
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Liu BW, Zhou H, Zhou ST, Zhang HJ, Feng AC, Jian CM, Hu J, Gao WP, Yuan JY. Synthesis and Self-Assembly of CO2–Temperature Dual Stimuli-Responsive Triblock Copolymers. Macromolecules 2014. [DOI: 10.1021/ma5001404] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Bo-wen Liu
- Key
Lab of Organic Optoelectronics and Molecular Engineering of Ministry
of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Hang Zhou
- Key
Lab of Organic Optoelectronics and Molecular Engineering of Ministry
of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
- Department
of Chemistry, University of Toronto, 80 St. George Street, Toronto, M5S 3H6, Ontario, Canada
| | - Si-tong Zhou
- Key
Lab of Organic Optoelectronics and Molecular Engineering of Ministry
of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Hui-juan Zhang
- Key
Lab of Organic Optoelectronics and Molecular Engineering of Ministry
of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - An-Chao Feng
- Key
Lab of Organic Optoelectronics and Molecular Engineering of Ministry
of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Chun-mei Jian
- Key
Lab of Organic Optoelectronics and Molecular Engineering of Ministry
of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jin Hu
- Department
of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Wei-ping Gao
- Department
of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Jin-ying Yuan
- Key
Lab of Organic Optoelectronics and Molecular Engineering of Ministry
of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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142
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Chu Y, Yu H, Ma Y, Zhang Y, Chen W, Zhang G, Wei H, Zhang X, Zhuo R, Jiang X. Synthesis and characterization of biodegradable pH and reduction dual-sensitive polymeric micelles for doxorubicin delivery. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27192] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yanfeng Chu
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
| | - Huan Yu
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
| | - Yingying Ma
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
| | - Yunti Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
| | - Weihai Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
| | - Guangyan Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
- Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 People's Republic of China
| | - Hua Wei
- Department of Bioengineering and Molecular Engineering and Sciences Institute; University of Washington; Seattle Washington 98195
| | - Xianzheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
| | - Renxi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry; Wuhan University; Wuhan 430072 People's Republic of China
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143
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Safari J, Zarnegar Z. Advanced drug delivery systems: Nanotechnology of health design A review. JOURNAL OF SAUDI CHEMICAL SOCIETY 2014. [DOI: 10.1016/j.jscs.2012.12.009] [Citation(s) in RCA: 236] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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144
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Ouahab A, Cheraga N, Onoja V, Shen Y, Tu J. Novel pH-sensitive charge-reversal cell penetrating peptide conjugated PEG-PLA micelles for docetaxel delivery: in vitro study. Int J Pharm 2014; 466:233-45. [PMID: 24614579 DOI: 10.1016/j.ijpharm.2014.03.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 02/10/2014] [Accepted: 03/02/2014] [Indexed: 01/08/2023]
Abstract
In order to create a pH-sensitive charge-reversal system for cell penetrating peptides (CPP) to prevent non-specific internalization of the drug; and concomitantly enhance the physical stability and tumor targetability of poly(ethylene glycol)-poly(d,l-lactide) (PEG-PLA) micelles, two sets of novel PEG-PLA micelles were developed. Cell penetrating decapeptide arginine-glycine (RG)5 and a pH-sensitive masking decapeptide histidine-glutamic acid (HE)5 were conjugated at the PEG free end to produce pH sensitive with peptides outside micelles (PHPO), while the pH sensitive with peptides inside micelles (PHPI) are the micelles obtained with the two peptides conjugated to the free end of the PLA block. The polymers were successfully synthesized and characterized by (1)H NMR and GPC. The mixed micelles were prepared and characterized for their loading efficiency, particle size and zeta potential. The surface charge of PHPO was greatly affected by the pH of the solution and (RG)5:(HE)5 ratio at the surface. The pH value of the solution at which the surface charge of PHPO reversed could be manipulated by the feed ratio of (RG)5-PEG-PLA (RGO) and (HE)5-PEG-PLA (HEO), hence, HEO:RGO molar ratio of 45:55 was selected for tumor targeting. Docetaxel (DTX) was sufficiently solubilized by DTX-PHPO with a loading efficiency of 90.18 ± 1.65%. At pH 7.4, DTX loaded mPEG-PLA (DTX-PM) (41.2 ± 0.3 nm), DTX-PHPO (195.3 ± 1.9 nm) and DTX-PHPI (190.9 ± 4.5 nm) showed sustained DTX release of less than 55% within 48 h. However, at pH 6.8 DTX-PHPI released 87.29 ± 0.24%, while DTX-PHPO released 70.49 ± 0.39% of the initial DTX amount within 48 h. Moreover, the physical stability of DTX-PHPO was increased due to the electrostatic interaction of the two peptides. The cellular uptake of DTX-PHPO in SGC-7901 cells and the cell killing effect tested on MCF-7 cells were enhanced by 2 folds at pH 6.8 compared to pH 7.4. Hence, DTX-PHPO is highly pH-sensitive in mildly acidic pH and exhibited higher internalization, but DTX-PHPI exhibited accelerated release. Meanwhile, both formulations displayed low internalization and release at pH greater than 7. This pH sensitive charge reversal design can offer a promising safe carrier using both CPPs and PEG-PLA micelles.
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Affiliation(s)
- Ammar Ouahab
- Department of Pharmaceutics, China pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China..
| | - Nihad Cheraga
- Department of Pharmaceutics, China pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Vitus Onoja
- Department of Pharmaceutics, China pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China
| | - Yan Shen
- Department of Pharmaceutics, China pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China..
| | - Jiasheng Tu
- Department of Pharmaceutics, China pharmaceutical University, #24 Tongjiaxiang, Nanjing 210009, China..
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145
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Takahashi A, Ozaki Y, Kuzuya A, Ohya Y. Impact of core-forming segment structure on drug loading in biodegradable polymeric micelles using PEG-b-poly(lactide-co-depsipeptide) block copolymers. BIOMED RESEARCH INTERNATIONAL 2014; 2014:579212. [PMID: 24696855 PMCID: PMC3950643 DOI: 10.1155/2014/579212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 12/30/2013] [Indexed: 11/18/2022]
Abstract
We synthesized series of amphiphilic AB-type block copolymers having systematic variation in the core-forming segments using poly(lactide-co-depsipeptide)s as a hydrophobic segment and prepared polymeric micelles using the block copolymers, PEG-b-poly(lactide-co-depsipeptide). We then discussed the relationship between the core-forming segment structure and drug loading efficiency for the polymeric micelles. PEG-b-poly(lactide-co-depsipeptide)s, PEG-b-PLGL containing L-leucine (Leu), and PEG-b-PLGF containing L-phenylalanine (Phe), with similar molecular weights and various mole fractions of depsipeptide units, were synthesized. Polymeric micelles entrapping model drug (fluorescein, FL) were prepared using these copolymers. As a result, PEG-b-poly(lactide-co-depsipeptide) micelles showed higher drug loading compared with PEG-b-PLLA and PEG-b-PDLLA as controls. The drug loading increased with increase in the mole fraction of depsipeptide unit in the hydrophobic segments. The introduction of aliphatic and aromatic depsipeptide units was effective to achieve higher FL loading into the micelles. PEG-b-PLGL micelle showed higher drug loading than PEG-b-PLGF micelle when the amount of FL in feed was high. These results obtained in this study should be useful for strategic design of polymeric micelle-type drug delivery carrier with high drug loading efficiency.
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Affiliation(s)
- Akihiro Takahashi
- Organization for Research and Development of Innovative Science and Technology (ORDIST), Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Yuta Ozaki
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Akinori Kuzuya
- Organization for Research and Development of Innovative Science and Technology (ORDIST), Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
| | - Yuichi Ohya
- Organization for Research and Development of Innovative Science and Technology (ORDIST), Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate, Suita, Osaka 564-8680, Japan
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146
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Henderson IM, Adams PG, Montaño GA, Paxton WF. Ionic effects on the behavior of thermoresponsive PEO-PNIPAAm block copolymers. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/polb.23444] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ian M. Henderson
- Center for Integrated Nanotechnologies; Sandia National Laboratories; Albuquerque New Mexico 87185
| | - Peter G. Adams
- Center for Integrated Nanotechnologies; Los Alamos National Laboratory; Los Alamos New Mexico 87544
| | - Gabriel A. Montaño
- Center for Integrated Nanotechnologies; Los Alamos National Laboratory; Los Alamos New Mexico 87544
| | - Walter F. Paxton
- Center for Integrated Nanotechnologies; Sandia National Laboratories; Albuquerque New Mexico 87185
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147
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Sun R, Luo Q, Gao C, Wang Y, Gao L, Du H, Huang Y, Li X, Shen Z, Zhu W. Facile fabrication of reduction-responsive nanocarriers for controlled drug release. Polym Chem 2014. [DOI: 10.1039/c4py00577e] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An amphiphilic multiblock poly(ether–ester) containing multiple thiols was facilely synthesized by “one-pot” polycondensation, and was used to prepare reduction-responsive core-crosslinked micelles for controlled drug release.
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Affiliation(s)
- Rui Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Qiaojie Luo
- Department of Oral and Maxillofacial Surgery
- Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006, P. R. China
| | - Chen Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Ying Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Lilong Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Hong Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Ying Huang
- Department of Oral and Maxillofacial Surgery
- Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006, P. R. China
| | - Xiaodong Li
- Department of Oral and Maxillofacial Surgery
- Affiliated Stomatology Hospital
- College of Medicine
- Zhejiang University
- Hangzhou 310006, P. R. China
| | - Zhiquan Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Weipu Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
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148
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Che N, Yang S, Kang H, Liu R, Li Z, Liu Z, Li P, Qu X, Huang Y. Synthesis and properties of CO2-switchable Dex-g-PAHMA copolymers. Polym Chem 2014. [DOI: 10.1039/c4py00987h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CO2-switchable Dex-g-PAHMA copolymers were synthesized and characterized. The properties of the graft copolymers and the cytotoxicity and cellular uptake of DOX-loaded Dex-g-PAHMA copolymer micelles were investigated.
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Affiliation(s)
- Ning Che
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
| | - Saina Yang
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
| | - Hongliang Kang
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
| | - Ruigang Liu
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
| | - Zhuang Li
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
| | - Zhijing Liu
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
| | - Pingping Li
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
| | - Xiaozhong Qu
- University of Chinese Academy of Sciences
- Beijing 100049, China
| | - Yong Huang
- State Key Laboratory of Polymer Physics and Chemistry
- Beijing National Laboratory of Molecular Sciences (BNLMS)
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190, China
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149
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Duan Z, Gao YJ, Qiao ZY, Fan G, Liu Y, Zhang D, Wang H. A photoacoustic approach for monitoring the drug release of pH-sensitive poly(β-amino ester)s. J Mater Chem B 2014; 2:6271-6282. [DOI: 10.1039/c4tb00319e] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we prepared PEG modified poly(β-amino ester) graft copolymers with pH-sensitive properties. Doxorubicin (DOX) and squaraine (SQ) dye as a photoacoustic tomography (PAT) reporter molecule were loaded into the hydrophobic core of polymeric micelles, and their release profiles investigated using the PAT technique.
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Affiliation(s)
- Zhongyu Duan
- School of Chemical Engineering & Technology
- Hebei University of Technology
- Tianjin, China
| | - Yu-Juan Gao
- School of Chemical Engineering & Technology
- Hebei University of Technology
- Tianjin, China
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
| | - Zeng-Ying Qiao
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing, China
| | - Gang Fan
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing, China
| | - Ya Liu
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing, China
| | - Di Zhang
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing, China
| | - Hao Wang
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety
- National Center for Nanoscience and Technology (NCNST)
- Beijing, China
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150
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Peng L, Feng A, Zhang H, Wang H, Jian C, Liu B, Gao W, Yuan J. Voltage-responsive micelles based on the assembly of two biocompatible homopolymers. Polym Chem 2014. [DOI: 10.1039/c3py01204b] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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