151
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Dirisala A, Osada K, Chen Q, Tockary TA, Machitani K, Osawa S, Liu X, Ishii T, Miyata K, Oba M, Uchida S, Itaka K, Kataoka K. Optimized rod length of polyplex micelles for maximizing transfection efficiency and their performance in systemic gene therapy against stroma-rich pancreatic tumors. Biomaterials 2014; 35:5359-5368. [PMID: 24720877 DOI: 10.1016/j.biomaterials.2014.03.037] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 03/16/2014] [Indexed: 01/02/2023]
Abstract
Poly(ethylene glycol) (PEG) modification onto a gene delivery carrier for systemic application results in a trade-off between prolonged blood circulation and promoted transfection because high PEG shielding is advantageous in prolonging blood retention, while it is disadvantageous with regard to obtaining efficient transfection owing to hampered cellular uptake. To tackle this challenging issue, the present investigation focused on the structure of polyplex micelles (PMs) obtained from PEG-poly(l-lysine) (PEG-PLys) block copolymers characterized as rod-shaped structures to seek the most appreciable formulation. Comprehensive investigations conducted with particular focus on stability, PEG crowdedness, and rod length, controlled by varying PLys segment length, clarified the effect of these structural features, with particular emphasis on rod length as a critical parameter in promoting cellular uptake. PMs with rod length regulated below the critical threshold length of 200 nm fully exploited the benefits of cross-linking and the cyclic RGD ligand, consequently, exhibiting remarkable transfection efficiency comparable with that of ExGen 500 and Lipofectamine(®) LTX with PLUS™ even though PMs were PEG shielded. The identified PMs exhibited significant antitumor efficacy in systemic treatment of pancreatic adenocarcinoma, whereas PMs with rod length above 200 nm exhibited negligible antitumor efficacy despite a superior blood circulation property, thereby highlighting the significance of controlling the rod length of PMs to promote gene transduction.
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Affiliation(s)
- Anjaneyulu Dirisala
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kensuke Osada
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
| | - Qixian Chen
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Theofilus A Tockary
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kaori Machitani
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shigehito Osawa
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Xueying Liu
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takehiko Ishii
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kanjiro Miyata
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Makoto Oba
- Department of Molecular Medicinal Sciences, Division of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Satoshi Uchida
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Keiji Itaka
- Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazunori Kataoka
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Division of Clinical Biotechnology, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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152
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Georgieva D, Kostova B, Ivanova S, Rachev D, Tzankova V, Kondeva-Burdina M, Christova D. pH-Sensitive cationic copolymers of different macromolecular architecture as potential dexamethasone sodium phosphate delivery systems. J Pharm Sci 2014; 103:2406-13. [PMID: 24961490 DOI: 10.1002/jps.24059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/19/2014] [Accepted: 05/27/2014] [Indexed: 01/08/2023]
Abstract
This paper describes the synthesis and characterization of cationic copolymers with different macromolecular architecture and drug delivery properties of the corresponding dexamethasone sodium phosphate (DSP)-loaded systems. Copolyelectrolytes comprising poly[2-(acryloyloxy)ethyl] trimethylammonium chloride (PAETMAC) and poly(ethylene glycol) blocks as well as a tri-arm star-shaped PAETMAC were synthesized using cerium(IV) ion-mediated polymerization method. The obtained copolyelectrolytes and corresponding ionic associates with DSP have been characterized by (1)H NMR, Fourier Transform Infrared spectroscopy, and differential scanning calorimetry. The average diameter, size distribution, and ζ-potential of the copolymers and DSP-copolymer ionic associates were determined by dynamic light scattering, and particles were visualized by scanning electron microscopy and transmission electron microscopy. The biocompatibility and cytotoxicity of obtained copolymers were determined. In vitro drug release experiments were carried out to estimate the ability of the obtained nanoparticles for sustained release of DSP for a period of 24 h.
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Affiliation(s)
- Dilyana Georgieva
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Medical University - Sofia, 1000 Sofia, Bulgaria
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153
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Oe Y, Christie RJ, Naito M, Low SA, Fukushima S, Toh K, Miura Y, Matsumoto Y, Nishiyama N, Miyata K, Kataoka K. Actively-targeted polyion complex micelles stabilized by cholesterol and disulfide cross-linking for systemic delivery of siRNA to solid tumors. Biomaterials 2014; 35:7887-95. [PMID: 24930854 DOI: 10.1016/j.biomaterials.2014.05.041] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 05/16/2014] [Indexed: 12/29/2022]
Abstract
For small interfering RNA (siRNA)-based cancer therapies, we report an actively-targeted and stabilized polyion complex micelle designed to improve tumor accumulation and cancer cell uptake of siRNA following systemic administration. Improvement in micelle stability was achieved using two stabilization mechanisms; covalent disulfide cross-linking and non-covalent hydrophobic interactions. The polymer component was designed to provide disulfide cross-linking and cancer cell-targeting cyclic RGD peptide ligands, while cholesterol-modified siRNA (Chol-siRNA) provided additional hydrophobic stabilization to the micelle structure. Dynamic light scattering confirmed formation of nano-sized disulfide cross-linked micelles (<50 nm in diameter) with a narrow size distribution. Improved stability of Chol-siRNA-loaded micelles (Chol-siRNA micelles) was demonstrated by resistance to both the dilution in serum-containing medium and counter polyion exchange with dextran sulfate, compared to control micelles prepared with Chol-free siRNA (Chol-free micelles). Improved stability resulted in prolonged blood circulation time of Chol-siRNA micelles compared to Chol-free micelles. Furthermore, introduction of cRGD ligands onto Chol-siRNA micelles significantly facilitated accumulation of siRNA in a subcutaneous cervical cancer model following systemic administration. Ultimately, systemically administered cRGD/Chol-siRNA micelles exhibited significant gene silencing activity in the tumor, presumably due to their active targeting ability combined with the enhanced stability through both hydrophobic interactions of cholesterol and disulfide cross-linking.
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Affiliation(s)
- Yusuke Oe
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - R James Christie
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mitsuru Naito
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Stewart A Low
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shigeto Fukushima
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kazuko Toh
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yutaka Miura
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yu Matsumoto
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Nobuhiro Nishiyama
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Polymer Chemistry Division, Chemical Resources Laboratory, Tokyo Institute of Technology, R1-11, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kanjiro Miyata
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Kazunori Kataoka
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Center for NanoBio Integration, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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154
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Abolmaali SS, Tamaddon A, Yousefi G, Javidnia K, Dinarvand R. Sequential optimization of methotrexate encapsulation in micellar nano-networks of polyethyleneimine ionomer containing redox-sensitive cross-links. Int J Nanomedicine 2014; 9:2833-48. [PMID: 24944513 PMCID: PMC4057327 DOI: 10.2147/ijn.s61614] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A functional polycation nanonetwork was developed for delivery of water soluble chemotherapeutic agents. The complexes of polyethyleneimine grafted methoxy polyethylene glycol (PEI-g-mPEG) and Zn(2+) were utilized as the micellar template for cross-linking with dithiodipropionic acid, followed by an acidic pH dialysis to remove the metal ion from the micellar template. The synthesis method was optimized according to pH, the molar ratio of Zn(2+), and the cross-link ratio. The atomic force microscopy showed soft, discrete, and uniform nano-networks. They were sensitive to the simulated reductive environment as determined by Ellman's assay. They showed few positive ζ potential and an average hydrodynamic diameter of 162±10 nm, which decreased to 49±11 nm upon dehydration. The ionic character of the nano-networks allowed the achievement of a higher-loading capacity of methotrexate (MTX), approximately 57% weight per weight, depending on the cross-link and the drug feed ratios. The nano-networks actively loaded with MTX presented some suitable properties, such as the hydrodynamic size of 117±16 nm, polydispersity index of 0.22, and a prolonged swelling-controlled release profile over 24 hours that boosted following reductive activation of the nanonetwork biodegradation. Unlike the PEI ionomer, the nano-networks provided an acceptable cytotoxicity profile. The drug-loaded nano-networks exhibited more specific cytotoxicity against human hepatocellular carcinoma cells if compared to free MTX at concentrations above 1 μM. The enhanced antitumor activity in vitro might be attributed to endocytic entry of MTX-loaded nano-networks that was found in the epifluorescence microscopy experiment for the fluorophore-labeled nano-networks.
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Affiliation(s)
- Samira Sadat Abolmaali
- Department of Pharmaceutics, Shiraz School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Tamaddon
- Department of Pharmaceutics, Shiraz School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamhossein Yousefi
- Department of Pharmaceutics, Shiraz School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Center for Nanotechnology in Drug Delivery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Katayoun Javidnia
- Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Rasoul Dinarvand
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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155
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Kim HJ, Miyata K, Nomoto T, Zheng M, Kim A, Liu X, Cabral H, Christie RJ, Nishiyama N, Kataoka K. siRNA delivery from triblock copolymer micelles with spatially-ordered compartments of PEG shell, siRNA-loaded intermediate layer, and hydrophobic core. Biomaterials 2014; 35:4548-56. [DOI: 10.1016/j.biomaterials.2014.02.016] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/09/2014] [Indexed: 12/17/2022]
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156
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Reddy LH, Bazile D. Drug delivery design for intravenous route with integrated physicochemistry, pharmacokinetics and pharmacodynamics: illustration with the case of taxane therapeutics. Adv Drug Deliv Rev 2014; 71:34-57. [PMID: 24184489 DOI: 10.1016/j.addr.2013.10.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 10/22/2013] [Accepted: 10/24/2013] [Indexed: 12/12/2022]
Abstract
This review is aimed at combining the published data on taxane formulations into a generalized Drug Delivery approach, starting from the physicochemistry and assessing its relationships with the pharmacokinetics, the biodistribution and the pharmacodynamics. Owing to the number and variety of taxane formulation designs, we considered this class of cytotoxic anticancer agents of particular interest to illustrate the concepts attached to this approach. According to the history of taxane development, we propose a classification as (i) "surfactant-based formulations" first generation, (ii) "surfactant-free formulations" second generation and (iii) "modulated pharmacokinetics drug delivery systems" third generation. Since our objective was to make the link between (i) the physicochemistry of the drug and carrier and (ii) the efficacy and safety of the drug in preclinical animal models and (iii) in human, we focused on the drug delivery technologies that were tested in clinic.
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Affiliation(s)
- L Harivardhan Reddy
- Drug Delivery Technologies and Innovation, Pharmaceutical Sciences Department, Sanofi Research and Development, 13 Quai Jules-Guesde, 94403 Vitry-sur-Seine, France.
| | - Didier Bazile
- Drug Delivery Technologies and Innovation, Pharmaceutical Sciences Department, Sanofi Research and Development, 13 Quai Jules-Guesde, 94403 Vitry-sur-Seine, France
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157
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Abstract
The remarkable diversity of the self-assembly behavior of PEG-peptides is reviewed, including self-assemblies formed by PEG-peptides with β-sheet and α-helical (coiled-coil) peptide sequences. The modes of self-assembly in solution and in the solid state are discussed. Additionally, applications in bionanotechnology and synthetic materials science are summarized.
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Affiliation(s)
- Ian W Hamley
- Department of Chemistry, University of Reading , Whiteknights, Reading RG6 6AD, United Kingdom
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158
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Weiss J, Wienk H, Boelens R, Laschewsky A. Block Copolymer Micelles with an Intermediate Star-/Flower-Like Structure Studied by1H NMR Relaxometry. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201300753] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jan Weiss
- Institute Charles Sadron; UPR22-CNRS; 23 Rue de Loess 67034 Strasbourg Cedex 2 France
| | - Hans Wienk
- NMR Spectroscopy; Bijvoet Center for Biomolecular Research; Utrecht University; Padualaan 8 3584CH Utrecht The Netherlands
| | - Rolf Boelens
- NMR Spectroscopy; Bijvoet Center for Biomolecular Research; Utrecht University; Padualaan 8 3584CH Utrecht The Netherlands
| | - André Laschewsky
- Department of Chemistry; University of Potsdam; Karl-Liebknecht-Strasse 24-25 14476 Potsdam-Golm Germany
- Fraunhofer Institute for Applied Polymer Research; Geiselbergstrasse 69 14476 Potsdam-Golm Germany
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159
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Biodegradable polymeric nanoparticles based on amphiphilic principle: construction and application in drug delivery. Sci China Chem 2014. [DOI: 10.1007/s11426-014-5076-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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160
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Oborotova NA, Sanarova EV. Role of new pharmaceutical technologies in enhancing the selectivity of antitumor drugs. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363213120529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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161
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Zhong LL, Gao Y, Wu YR, Zhang LP. Preparation of amphiphilic cellulose carrier and study of its drug release performance. ACTA ACUST UNITED AC 2014. [DOI: 10.1179/1432891713z.000000000186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- L. L. Zhong
- College of Material science and technologyBeijing Forestry University, No. 35 Qinghua East Road, Beijing 100083, China
| | - Y. Gao
- College of Material science and technologyBeijing Forestry University, No. 35 Qinghua East Road, Beijing 100083, China
| | - Y. R. Wu
- College of Material science and technologyBeijing Forestry University, No. 35 Qinghua East Road, Beijing 100083, China
| | - L. P. Zhang
- College of Material science and technologyBeijing Forestry University, No. 35 Qinghua East Road, Beijing 100083, China
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162
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Wang H, Li F, Du C, Wang H, Mahato RI, Huang Y. Doxorubicin and Lapatinib Combination Nanomedicine for Treating Resistant Breast Cancer. Mol Pharm 2014; 11:2600-11. [DOI: 10.1021/mp400687w] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Huiyuan Wang
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 501 Hai-ke
Rd, Shanghai 201203, China
| | - Feng Li
- Department
of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia 23668, United States
| | - Chengan Du
- Department
of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia 23668, United States
| | - Huixin Wang
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 501 Hai-ke
Rd, Shanghai 201203, China
| | - Ram I. Mahato
- Department
of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Yongzhuo Huang
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 501 Hai-ke
Rd, Shanghai 201203, China
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163
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Akbulut M, D’Addio SM, Gindy ME, Prud’homme RK. Novel methods of targeted drug delivery: the potential of multifunctional nanoparticles. Expert Rev Clin Pharmacol 2014; 2:265-82. [DOI: 10.1586/ecp.09.4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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164
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Kikuchi T, Sato S, Fujita D, Fujita M. Stepwise DNA condensation by a histone-mimic peptide-coated M12L24 spherical complex. Chem Sci 2014. [DOI: 10.1039/c4sc00656a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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165
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Pothayee N, Chen DY, Aronova MA, Qian C, Bouraoud N, Dodd S, Leapman RD, Koretsky AP. Self-organized Mn 2+-Block Copolymer Complexes and Their Use for In Vivo MR Imaging of Biological Processes. J Mater Chem B 2014; 2:7055-7064. [PMID: 25364506 PMCID: PMC4213148 DOI: 10.1039/c4tb00911h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Manganese-block copolymer complexes (MnBCs) that contain paramagnetic Mn ions complexed with ionic-nonionic poly(ethylene oxide-b-poly(methacrylate) have been developed for use as a T1-weighted MRI contrast agent. By encasing Mn ion within ionized polymer matrices, r1 values could be increased by 250-350 % in comparison with free Mn ion at relative high fields of 4.7 to 11.7 T. MnBCs were further manipulated by treatment with NaOH to achieve more stable complexes (iMnBCs). iMnBCs delayed release of Mn2+ which could be accelerated by low pH, indeed by cellular uptake via endocytosis into acidic compartments. Both complexes exhibited good T1 contrast signal enhancement in liver following intravenous infusion. The contrast was observed in gallbladder due to the clearance of Mn ion from liver to biliary process. iMnBCs, notably, showed a delayed contrast enhancement profile in gallbladder, which was interpreted to be due to degradation and excretion of Mn2+ ions into the gallbladder. Intracortical injection of iMnBCs into the rat brain also led to delayed neuronal transport to thalamus. The delayed enhancement feature may have benefits for targeting MRI contrast to specific cells and surface receptors that are known to be internalized by endocytosis.
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Affiliation(s)
- Nikorn Pothayee
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892
| | - Der-Yow Chen
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892
| | - Maria A Aronova
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892
| | - Chunqi Qian
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892
| | - Nadia Bouraoud
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892
| | - Stephen Dodd
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892
| | - Richard D Leapman
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892
| | - Alan P Koretsky
- Laboratory of Functional and Molecular Imaging, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892
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166
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Novoa-Carballal R, Silva C, Möller S, Schnabelrauch M, Reis RL, Pashkuleva I. Tunable nano-carriers from clicked glycosaminoglycan block copolymers. J Mater Chem B 2014; 2:4177-4184. [DOI: 10.1039/c4tb00410h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Synthesis of diblock copolymers of PEG and glycosaminoglycans by oxime click reaction is reported and the ability of these copolymers to carry positively charged proteins is evidenced.
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Affiliation(s)
- Ramon Novoa-Carballal
- 3B's Research Group – Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães, Portugal
- ICVS/3B's – PT Government Associate Laboratory
| | - Carla Silva
- 3B's Research Group – Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães, Portugal
- ICVS/3B's – PT Government Associate Laboratory
| | | | | | - Rui L. Reis
- 3B's Research Group – Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães, Portugal
- ICVS/3B's – PT Government Associate Laboratory
| | - Iva Pashkuleva
- 3B's Research Group – Biomaterials, Biodegradables and Biomimetics
- University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- Guimarães, Portugal
- ICVS/3B's – PT Government Associate Laboratory
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167
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Zhang J, Chen S, Zhu Z, Liu S. Stopped-flow kinetic studies of the formation and disintegration of polyion complex micelles in aqueous solution. Phys Chem Chem Phys 2014; 16:117-27. [DOI: 10.1039/c3cp53608d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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168
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Li W, Zhao M, Ke C, Zhang G, Zhang L, Li H, Zhang F, Sun Y, Dai J, Wang H, Guo Y. Nano polymeric carrier fabrication technologies for advanced antitumor therapy. BIOMED RESEARCH INTERNATIONAL 2013; 2013:305089. [PMID: 24369011 PMCID: PMC3867855 DOI: 10.1155/2013/305089] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 10/29/2013] [Accepted: 11/03/2013] [Indexed: 01/17/2023]
Abstract
Comparing with the traditional therapeutic methods, newly developed cancer therapy based on the nanoparticulates attracted extensively interest due to its unique advantages. However, there are still some drawbacks such as the unfavorable in vivo performance for nanomedicine and undesirable tumor escape from the immunotherapy. While as we know that the in vivo performance strongly depended on the nanocarrier structural properties, thus, the big gap between in vitro and in vivo can be overcome by nanocarrier's structural tailoring by fine chemical design and microstructural tuning. In addition, this fine nanocarrier's engineering can also provide practical solution to solve the problems in traditional cancer immunotherapy. In this paper, we review the latest development in nanomedicine, cancer therapy, and nanoimmunotherapy. We then give an explanation why fine nanocanrrie's engineering with special focus on the unique pathology of tumor microenvironments and properties of immunocells can obviously promote the in vivo performance and improve the therapeutic index of nanoimmunotherapy.
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Affiliation(s)
- Wei Li
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
- State Key Laboratory of Antibody Medicine and Targeting Therapy and Shanghai Key Laboratory of Cell Engineering, Shanghai 201203, China
- PLA General Hospital Cancer Center, PLA Graduate School of Medicine, Beijing 100853, China
- College of Pharmacy, Liaocheng University, 1 Hunan Road, Liaocheng, Shandong 25000, China
| | - Mengxin Zhao
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
- College of Pharmacy, Liaocheng University, 1 Hunan Road, Liaocheng, Shandong 25000, China
| | - Changhong Ke
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Ge Zhang
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Li Zhang
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Huafei Li
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Fulei Zhang
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
- College of Pharmacy, Liaocheng University, 1 Hunan Road, Liaocheng, Shandong 25000, China
| | - Yun Sun
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
| | - Jianxin Dai
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
- State Key Laboratory of Antibody Medicine and Targeting Therapy and Shanghai Key Laboratory of Cell Engineering, Shanghai 201203, China
- PLA General Hospital Cancer Center, PLA Graduate School of Medicine, Beijing 100853, China
- College of Pharmacy, Liaocheng University, 1 Hunan Road, Liaocheng, Shandong 25000, China
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Hao Wang
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
- State Key Laboratory of Antibody Medicine and Targeting Therapy and Shanghai Key Laboratory of Cell Engineering, Shanghai 201203, China
- PLA General Hospital Cancer Center, PLA Graduate School of Medicine, Beijing 100853, China
- College of Pharmacy, Liaocheng University, 1 Hunan Road, Liaocheng, Shandong 25000, China
- Department of Chemistry, Jinan University, Guangzhou 510632, China
| | - Yajun Guo
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, China
- State Key Laboratory of Antibody Medicine and Targeting Therapy and Shanghai Key Laboratory of Cell Engineering, Shanghai 201203, China
- PLA General Hospital Cancer Center, PLA Graduate School of Medicine, Beijing 100853, China
- College of Pharmacy, Liaocheng University, 1 Hunan Road, Liaocheng, Shandong 25000, China
- Department of Chemistry, Jinan University, Guangzhou 510632, China
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169
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Mishra D, Hubenak JR, Mathur AB. Nanoparticle systems as tools to improve drug delivery and therapeutic efficacy. J Biomed Mater Res A 2013; 101:3646-60. [PMID: 23878102 DOI: 10.1002/jbm.a.34642] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 02/04/2013] [Accepted: 02/05/2013] [Indexed: 02/03/2023]
Abstract
Nanoparticle-based drug delivery systems are appealing because, among other properties, they are easily manufactured and have the capacity to encapsulate a wide variety of drugs, many of which are not directly miscible with water. This review classifies nanoparticles into three broad categories based upon material composition: bio-inspired systems, synthetic systems, and inorganic systems. Each has distinct properties suitable for drug delivery applications, including their structure, composition, and pharmacokinetics (including clearance and uptake mechanisms), making each uniquely suitable for certain types of drugs. Furthermore, nanoparticles can be customized, making them ideal for a variety of applications. Advantages and disadvantages of the different systems are discussed. Strategies for improving nanoparticle efficacy include adding targeting agents on the nanoparticle surface, altering the degradation profile to control drug release, or PEGylating the surface to increase circulation times and reduce immediate clearance by the kidneys. The future of nanoparticle systems seems to be focused on further improving overall patient outcome by increasing delivery accuracy to the target area.
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Affiliation(s)
- Deepa Mishra
- Department of Plastic Surgery, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Unit 602, Houston, Texas, 77030
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170
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de Vries JW, Zhang F, Herrmann A. Drug delivery systems based on nucleic acid nanostructures. J Control Release 2013; 172:467-83. [DOI: 10.1016/j.jconrel.2013.05.022] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 05/23/2013] [Accepted: 05/24/2013] [Indexed: 01/26/2023]
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171
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Liu T, Hu J, Jin Z, Jin F, Liu S. Two-photon ratiometric fluorescent mapping of intracellular transport pathways of pH-responsive block copolymer micellar nanocarriers. Adv Healthc Mater 2013; 2:1576-81. [PMID: 23703785 DOI: 10.1002/adhm.201200436] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Indexed: 12/25/2022]
Abstract
Ultrasensitive ratiometric fluorescent pH probes based on dual dye-labeled pH-responsive diblock copolymer micellar scaffold are constructed. The pH-sensitive emitting nature of BTPE dyes and emission turn-on of CMA moieties triggered by pH-actuated micelle-to-unimer of diblock scaffold synergistically contribute to the observed ≈250-fold changes of BTPE/CMA emission intensity ratios in the whole pH range. Two-photon ratiometric fluorescent pH mapping of intracellular gradients subjected by pH-responsive micellar nanoparticles in their endocytic pathway has been thus achieved.
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Affiliation(s)
- Tao Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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172
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Self-assembly and aggregation of ATRP prepared amphiphilic BAB tri-block copolymers contained nonionic ethylene glycol and fluorescent 9,10-di(1-naphthalenyl)-2-vinyl-anthracene/1-vinyl-pyrene segments. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.08.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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173
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WITHDRAWN: Influence of polyaspartamide protonation on polyion complex formation with siRNA. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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174
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Zhao Y, Alakhova DY, Kabanov AV. Can nanomedicines kill cancer stem cells? Adv Drug Deliv Rev 2013; 65:1763-83. [PMID: 24120657 DOI: 10.1016/j.addr.2013.09.016] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 09/30/2013] [Accepted: 09/30/2013] [Indexed: 12/12/2022]
Abstract
Most tumors are heterogeneous and many cancers contain small population of highly tumorigenic and intrinsically drug resistant cancer stem cells (CSCs). Like normal stem cell, CSCs have the ability to self-renew and differentiate to other tumor cell types. They are believed to be a source for drug resistance, tumor recurrence and metastasis. CSCs often overexpress drug efflux transporters, spend most of their time in non-dividing G0 cell cycle state, and therefore, can escape the conventional chemotherapies. Thus, targeting CSCs is essential for developing novel therapies to prevent cancer relapse and emerging of drug resistance. Nanocarrier-based therapeutic agents (nanomedicines) have been used to achieve longer circulation times, better stability and bioavailability over current therapeutics. Recently, some groups have successfully applied nanomedicines to target CSCs to eliminate the tumor and prevent its recurrence. These approaches include 1) delivery of therapeutic agents (small molecules, siRNA, antibodies) that affect embryonic signaling pathways implicated in self-renewal and differentiation in CSCs, 2) inhibiting drug efflux transporters in an attempt to sensitize CSCs to therapy, 3) targeting metabolism in CSCs through nanoformulated chemicals and field-responsive magnetic nanoparticles and carbon nanotubes, and 4) disruption of multiple pathways in drug resistant cells using combination of chemotherapeutic drugs with amphiphilic Pluronic block copolymers. Despite clear progress of these studies the challenges of targeting CSCs by nanomedicines still exist and leave plenty of room for improvement and development. This review summarizes biological processes that are related to CSCs, overviews the current state of anti-CSCs therapies, and discusses state-of-the-art nanomedicine approaches developed to kill CSCs.
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175
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Hu J, Zeng F, Wei J, Chen Y, Chen Y. Novel controlled drug delivery system for multiple drugs based on electrospun nanofibers containing nanomicelles. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 25:257-68. [PMID: 24160558 DOI: 10.1080/09205063.2013.852367] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This research described a novel composite electrospun nanofibers, which were consisted of MPEG-b-PLA micelles, chitosan, and PEO, realizing controlled release of both hydrophobic and hydrophilic drugs. 5-FU and Cefradine used as model drugs were successfully loaded in the nanofibers. The in vitro studies showed there was a low initial burst release of 5-FU from micelles-loaded nanofibers, and the final release proportion was about 91.4% after continually releasing for 109 h. In vitro cytotoxicity studies revealed that 5-FU-loaded nanofibers restrained HepG-2 cells efficiently, and the cell viability was 45.9% after three days of cultivation in solutions containing micelles-loaded nanofibers with 21.6 μg 5-FU. All results suggested that micelles-loaded nanofibers with two kinds of drugs can be used as an effective controlled drug delivery vehicle and may have a bright future in cancer chemotherapy or clinical treatments.
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Affiliation(s)
- Jun Hu
- a Department of Chemistry , Institute of Polymers, Nanchang University , 999 Xuefu Avenue, Nanchang 330031 , China
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176
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Dey D, Kumar S, Maiti S, Dhara D. Stopped-flow kinetic studies of poly(amidoamine) dendrimer-calf thymus DNA to form dendriplexes. J Phys Chem B 2013; 117:13767-74. [PMID: 24087941 DOI: 10.1021/jp406973t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Poly(amidoamine) (PAMAM) dendrimers are known to be highly efficient nonviral carriers in gene delivery. Dendrimer-mediated transfection is known to be a function of the dendrimer to DNA charge ratio as well as the size of the dendrimer. In the present study, the binding kinetics of four PAMAM dendrimers (G1, G2, G3, and G4) with calf thymus DNA (CT-DNA) has been studied using stopped-flow fluorescence spectroscopy. The effect of dendrimer-to-DNA charge ratio and dendrimer generation on the binding kinetics was investigated. In most cases, the results of dendrimer-CT-DNA binding can be explained by a two-step reaction mechanism: a rapid electrostatic binding between the dendrimer and DNA, followed by a conformational change of the dendrimer-DNA complex that ultimately leads to DNA condensation. It was observed that the charge ratio on the dendrimer and the DNA phosphate groups, as well as the dendrimer generation (size), has a marked effect on the kinetics of binding between the DNA and the dendrimers. The rate constant (k'1) of the first step was much higher compared to that of the second step (k'2), and both were found to increase with an increase in dendrimer concentration. Among the four generations of dendrimers, G4 exhibited significantly faster binding kinetics compared to the three smaller generation dendrimers.
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Affiliation(s)
- Debabrata Dey
- Department of Chemistry, Indian Institute of Technology Kharagpur , West Bengal 721302 India
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177
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Zhao Y, Sakai F, Su L, Liu Y, Wei K, Chen G, Jiang M. Progressive macromolecular self-assembly: from biomimetic chemistry to bio-inspired materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:5215-5256. [PMID: 24022921 DOI: 10.1002/adma.201302215] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/08/2013] [Indexed: 06/02/2023]
Abstract
Macromolecular self-assembly (MSA) has been an active and fruitful research field since the 1980s, especially in this new century, which is promoted by the remarkable developments in controlled radical polymerization in polymer chemistry, etc. and driven by the demands in bio-related investigations and applications. In this review, we try to summarize the trends and recent progress in MSA in relation to biomimetic chemistry and bio-inspired materials. Our paper covers representative achievements in the fabrication of artificial building blocks for life, cell-inspired biomimetic materials, and macromolecular assemblies mimicking the functions of natural materials and their applications. It is true that the current status of the deliberately designed and obtained nano-objects based on MSA including a variety of micelles, multicompartment vesicles, and some hybrid and complex nano-objects is at their very first stage to mimic nature, but significant and encouraging progress has been made in achieving a certain similarity in morphologies or properties to that of natural ones. Such achievements also demonstrate that MSA has played an important and irreplaceable role in the grand and long-standing research of biomimetic and bio-inspired materials, the future success of which depends on mutual and persistent efforts in polymer science, material science, supramolecular chemistry, and biology.
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Affiliation(s)
- Yu Zhao
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai, China
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178
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Huang H, Zhang X, Yu J, Zeng J, Chang PR, Xu H, Huang J. Fabrication and reduction-sensitive behavior of polyion complex nano-micelles based on PEG-conjugated polymer containing disulfide bonds as a potential carrier of anti-tumor paclitaxel. Colloids Surf B Biointerfaces 2013; 110:59-65. [DOI: 10.1016/j.colsurfb.2013.04.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 04/19/2013] [Accepted: 04/22/2013] [Indexed: 12/26/2022]
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179
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Xing R, Liu G, Zhu J, Hou Y, Chen X. Functional magnetic nanoparticles for non-viral gene delivery and MR imaging. Pharm Res 2013; 31:1377-89. [PMID: 24065595 DOI: 10.1007/s11095-013-1205-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 09/12/2013] [Indexed: 01/11/2023]
Abstract
Gene therapy is becoming a promising strategy to treat various kinds of genetic and acquired diseases. However, the development of safe, efficient, and targetable gene delivery systems remains a major challenge in gene therapy. The unique material characteristics of magnetic nanoparticles (MNPs), including high surface area, facile surface modification, controllable size, and excellent magnetic properties, make them promising candidates for gene delivery. The engineered MNPs with modifiable functional surfaces and bioactive cores can result in several advantageous diagnostic and therapeutic properties including enhanced magnetic resonance imaging (MRI) signal intensity, long permeation and retention in the circulatory system, specific delivery of therapeutic genes to target sites. In this review, the updated research on the preparation and surface modification of MNPs for gene delivery is summarized.
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Affiliation(s)
- Ruijun Xing
- Department of Materials Science and Engineering College of Engineering, Peking University, Beijing, 100871, China
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180
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Xu X, Li Y, Wang F, Lv L, Liu J, Li M, Guo A, Jiang J, Shen Y, Guo S. Synthesis, in vitro and in vivo evaluation of new norcantharidin-conjugated hydroxypropyltrimethyl ammonium chloride chitosan derivatives as polymer therapeutics. Int J Pharm 2013; 453:610-9. [DOI: 10.1016/j.ijpharm.2013.05.052] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Revised: 05/04/2013] [Accepted: 05/25/2013] [Indexed: 01/01/2023]
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181
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Lebouille JGJL, Vleugels LFW, Dias AA, Leermakers FAM, Cohen Stuart MA, Tuinier R. Controlled block copolymer micelle formation for encapsulation of hydrophobic ingredients. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2013; 36:107. [PMID: 24072465 DOI: 10.1140/epje/i2013-13107-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 08/07/2013] [Accepted: 08/23/2013] [Indexed: 06/02/2023]
Abstract
We report on the formation of polymeric micelles in water using triblock copolymers with a polyethylene glycol middle block and various hydrophobic outer blocks prepared with the precipitation method. We form micelles in a reproducible manner with a narrow size distribution. This suggests that during the formation of the micelles the system had time to form micelles under close-to-thermodynamic control. This may explain why it is possible to use an equilibrium self-consistent field theory to predict the hydrodynamic size and the loading capacity of the micelles in accordance with experimental finding. Yet, the micelles are structurally quenched as concluded from the observation of size stability in time. We demonstrate that our approach enables to prepare rather hydrophobic block copolymer micelles with tunable size and loading.
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182
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Delivery of siRNA to the brain using a combination of nose-to-brain delivery and cell-penetrating peptide-modified nano-micelles. Biomaterials 2013; 34:9220-6. [PMID: 23992922 DOI: 10.1016/j.biomaterials.2013.08.036] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 08/13/2013] [Indexed: 12/22/2022]
Abstract
The potential for RNA-based agents to serve as effective therapeutics for central nerve systems (CNS) disorders has been successfully demonstrated in vitro. However, the blood-brain barrier limits the distribution of systemically administered therapeutics to the CNS, posing a major challenge for drug development aimed at combatting CNS disorders. Therefore, the development of effective strategies to enhance siRNA delivery to the brain is of great interest in clinical and pharmaceutical fields. To improve the efficiency of small interfering RNA (siRNA) delivery to the brain, we developed a nose-to-brain delivery system combined with cell-penetrating peptide (CPP) modified nano-micelles comprising polyethylene glycol-polycaprolactone (PEG-PCL) copolymers conjugated with the CPP, Tat (MPEG-PCL-Tat). In this study, we describe intranasal brain delivery of siRNA or dextran (Mw: 10,000 Da) as a model siRNA, by using MPEG-PCL-Tat. Intranasal delivery of dextran with MPEG-PCL-Tat improved brain delivery compared to intravenous delivery of dextran either with or without MPEG-PCL-Tat. We also studied the intranasal transfer of MPEG-PCL-Tat to the brain via the olfactory and trigeminal nerves, the putative pathways to the brain from the nasal cavity. We found that MPEG-PCL-Tat accelerated transport along the olfactory and trigeminal nerve pathway because of its high permeation across the nasal mucosa.
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183
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Cohen-Arazi N, Domb AJ, Katzhendler J. Poly(α
-hydroxy alkanoic acid)s Derived From α
-Amino Acids. Macromol Biosci 2013; 13:1689-99. [DOI: 10.1002/mabi.201300266] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/01/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Naomi Cohen-Arazi
- Faculty of Medicine, School of Pharmacy; Institute of Drug Research, The Hebrew University of Jerusalem; Jerusalem Israel
| | - Abraham J. Domb
- Faculty of Medicine, School of Pharmacy; Institute of Drug Research, The Hebrew University of Jerusalem; Jerusalem Israel
| | - Joshua Katzhendler
- Faculty of Medicine, School of Pharmacy; Institute of Drug Research, The Hebrew University of Jerusalem; Jerusalem Israel
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184
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Tockary TA, Osada K, Chen Q, Machitani K, Dirisala A, Uchida S, Nomoto T, Toh K, Matsumoto Y, Itaka K, Nitta K, Nagayama K, Kataoka K. Tethered PEG Crowdedness Determining Shape and Blood Circulation Profile of Polyplex Micelle Gene Carriers. Macromolecules 2013. [DOI: 10.1021/ma401093z] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
| | - Kensuke Osada
- Japan Science and Technology
Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | | | | | | | | | | | | | | | | | - Koji Nitta
- Okazaki Institute for Integrative
Bioscience, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaijicho, Okazaki, Aichi 444-8787, Japan
| | - Kuniaki Nagayama
- Okazaki Institute for Integrative
Bioscience, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaijicho, Okazaki, Aichi 444-8787, Japan
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185
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Ghoorchian A, Vandemark K, Freeman K, Kambow S, Holland NB, Streletzky KA. Size and shape characterization of thermoreversible micelles of three-armed star elastin-like polypeptides. J Phys Chem B 2013; 117:8865-74. [PMID: 23777417 DOI: 10.1021/jp312591j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three-armed star elastin-like polypeptides are shown to have the capability of self-assembling into micellar constructs at certain environmental conditions. Here, a study of the size distribution, shape, and molecular weight of these micelles at different salt concentrations and pH values is presented. Multiangle dynamic light scattering was used to study the formation, reversibility, and size of the micelles at different environmental conditions. On the basis of the salt concentration of the solution, two distinct size distribution regimes and a transition region were observed. Static light scattering was performed to study the molecular weight and geometrical anisotropy of the micelles in each regime. The anisotropic behavior and elongation of the particles were independently confirmed by depolarized dynamic light scattering, and a model for micelles at each regime was proposed. The size and molecular weight of the micelles were verified using viscosity measurements. The results of this study suggest that there is big jump in the size and molecular weight of the micelles from the first salt-dependent regime to the other, and the shape of the micelles changes from spheres to cylindrical micelles with a higher than 10:1 axis ratio.
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Affiliation(s)
- Ali Ghoorchian
- Department of Chemical and Biochemical Engineering, Cleveland State University, Cleveland, Ohio 44115, USA
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186
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Luo YL, Yang XL, Xu F, Chen YS, Ren-Ting ZM. Thermosensitive self-assembly micelles from A 2BA 2-type poly( N-isopropyl acrylamide) 2- b-Poly(lactic acid)- b-Poly( N-isopropyl acrylamide) 2four-armed star block copolymers and their applications as drug carriers. J Appl Polym Sci 2013. [DOI: 10.1002/app.39530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yan-Ling Luo
- Key Laboratory of Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an; 710062; People's Republic of China
| | - Xiao-Li Yang
- Key Laboratory of Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an; 710062; People's Republic of China
| | - Feng Xu
- Key Laboratory of Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an; 710062; People's Republic of China
| | - Ya-Shao Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an; 710062; People's Republic of China
| | - Zhuo-Ma Ren-Ting
- Key Laboratory of Macromolecular Science of Shaanxi Province; School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an; 710062; People's Republic of China
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187
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188
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Polymeric micelles, a promising drug delivery system to enhance bioavailability of poorly water-soluble drugs. JOURNAL OF DRUG DELIVERY 2013; 2013:340315. [PMID: 23936656 PMCID: PMC3712247 DOI: 10.1155/2013/340315] [Citation(s) in RCA: 267] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/04/2013] [Accepted: 06/11/2013] [Indexed: 01/27/2023]
Abstract
Oral administration is the most commonly used and readily accepted form of drug delivery; however, it is find that many drugs are difficult to attain enough bioavailability when administered via this route. Polymeric micelles (PMs) can overcome some limitations of the oral delivery acting as carriers able to enhance drug absorption, by providing (1) protection of the loaded drug from the harsh environment of the GI tract, (2) release of the drug in a controlled manner at target sites, (3) prolongation of the residence time in the gut by mucoadhesion, and (4) inhibition of efflux pumps to improve the drug accumulation. To explain the mechanisms for enhancement of oral bioavailability, we discussed the special stability of PMs, the controlled release properties of pH-sensitive PMs, the prolongation of residence time with mucoadhesive PMs, and the P-gp inhibitors commonly used in PMs, respectively. The primary purpose of this paper is to illustrate the potential of PMs for delivery of poorly water-soluble drugs with bioavailability being well maintained.
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189
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Tsiamantas C, Psarros C, Mays JW, Pitsikalis M. Micellization behavior of model asymmetric miktoarm star copolymers of the AA′B type, where A is polyisoprene and B is polystyrene. Polym J 2013. [DOI: 10.1038/pj.2013.54] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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190
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Al-Hilal TA, Alam F, Byun Y. Oral drug delivery systems using chemical conjugates or physical complexes. Adv Drug Deliv Rev 2013; 65:845-64. [PMID: 23220326 DOI: 10.1016/j.addr.2012.11.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 11/25/2012] [Accepted: 11/27/2012] [Indexed: 02/07/2023]
Abstract
Oral delivery of therapeutics is extremely challenging. The digestive system is designed in a way that naturally allows the degradation of proteins or peptides into small molecules prior to absorption. For systemic absorption, the intact drug molecules must traverse the impending harsh gastrointestinal environment. Technologies, such as enteric coating, with oral dosage formulation strategies have successfully provided the protection of non-peptide based therapeutics against the harsh, acidic condition of the stomach. However, these technologies showed limited success on the protection of therapeutic proteins and peptides. Importantly, inherent permeability coefficient of the therapeutics is still a major problem that has remained unresolved for decades. Addressing this issue in the context, we summarize the strategies that are developed in enhancing the intestinal permeability of a drug molecule either by modifying the intestinal epithelium or by modifying the drug itself. These modifications have been pursued by using a group of molecules that can be conjugated to the drug molecule to alter the cell permeability of the drug or mixed with the drug molecule to alter the epithelial barrier function, in order to achieve the effective drug permeation. This article will address the current trends and future perspectives of the oral delivery strategies.
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Affiliation(s)
- Taslim A Al-Hilal
- College of Pharmacy, Seoul National University, Seoul 151-742, South Korea
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191
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Garnier S, Laschewsky A, Storsberg J. Polymeric Surfactants: Novel Agents with Exceptional Properties. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.100290] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Abstract
This article presents recent progress in the field of polymeric surfactants made of permanently amphiphilic block copolymers or of stimulus-sensitive ones. We highlight key points in the design of amphiphilic macromolecules, to yield polymer surfactants with tailor-made properties, as well as recently developed and still challenging application fields for this new class of surfactants. The efficiency boosting of amphiphilic block copolymers as co-surfactants in microemulsions is discussed, as are surface modification by polymer surfactants, and stabilization of dispersions. Moreover, the use of block copolymers in nanosciences is presented, for instance as a tool for nanomaterial fabrication, or for biomedical and cosmetic applications in bio-nanotechnology. Finally, self-assembly and applications of some newly developed “exotic” amphiphilic block copolymer structures as new surface-active materials will be highlighted.
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Affiliation(s)
- S. Garnier
- Universität Potsdam, P. O. Box 6015 53, D-14415 Potsdam-Golm (Germany)
| | - A. Laschewsky
- Universität Potsdam, P. O. Box 6015 53, D-14415 Potsdam-Golm (Germany)
- Fraunhofer Institut für Angewandte Polymerforschung FhG-IAP, Geiselbergstr. 69, D-14476 Potsdam-Golm (Germany)
| | - J. Storsberg
- Fraunhofer Institut für Angewandte Polymerforschung FhG-IAP, Geiselbergstr. 69, D-14476 Potsdam-Golm (Germany)
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192
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Wei H, Volpatti LR, Sellers DL, Maris DO, Andrews IW, Hemphill AS, Chan LW, Chu DSH, Horner PJ, Pun SH. Dual responsive, stabilized nanoparticles for efficient in vivo plasmid delivery. Angew Chem Int Ed Engl 2013; 52:5377-81. [PMID: 23592572 DOI: 10.1002/anie.201301896] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Hua Wei
- Department of Bioengineering and Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
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193
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Wei H, Volpatti LR, Sellers DL, Maris DO, Andrews IW, Hemphill AS, Chan LW, Chu DSH, Horner PJ, Pun SH. Dual Responsive, Stabilized Nanoparticles for Efficient In Vivo Plasmid Delivery. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301896] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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194
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Basak R, Bandyopadhyay R. Encapsulation of hydrophobic drugs in Pluronic F127 micelles: effects of drug hydrophobicity, solution temperature, and pH. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4350-6. [PMID: 23472840 DOI: 10.1021/la304836e] [Citation(s) in RCA: 199] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Three drugs, ibuprofen, aspirin, and erythromycin, are encapsulated in spherical Pluronic F127 micelles. The shapes and the size distributions of the micelles in dilute, aqueous solutions, with and without drugs, are ascertained using cryo-scanning electron microscopy and dynamic light scattering (DLS) experiments, respectively. Uptake of drugs above a threshold concentration is seen to reduce the critical micellization temperature of the solution. The mean hydrodynamic radii and polydispersities of the micelles are found to increase with decrease in temperature and in the presence of drug molecules. The hydration of the micellar core at lower temperatures is verified using fluorescence measurements. Increasing solution pH leads to the ionization of the drugs incorporated in the micellar cores. This causes rupture of the micelles and release of the drugs into the solution at the highest solution pH value of 11.36 investigated here and is studied using DLS and fluorescence spectrocopy.
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195
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Li B, Yang J, Ma L, Li F, Tu Z, Gao C. Fabrication of poly(lactide-co-glycolide) scaffold filled with fibrin gel, mesenchymal stem cells, and poly(ethylene oxide)-b-poly(L-lysine)/TGF-β1 plasmid DNA complexes for cartilage restoration in vivo. J Biomed Mater Res A 2013; 101:3097-108. [PMID: 23529956 DOI: 10.1002/jbm.a.34618] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 12/19/2012] [Accepted: 01/16/2013] [Indexed: 12/15/2022]
Abstract
A poly (lactide-co-glycolide) (PLGA) scaffold filled with fibrin gel, mesenchymal stem cells (MSCs) and poly(ethylene oxide)-b-poly (L-lysine) (PEO-b-PLL)/pDNA-TGF-β1 complexes was fabricated and applied in vivo for synchronized regeneration of cartilage and subchondral bone. The PEO-b-PLL/pDNA-TGF-β1 complexes could transfect MSCs in vitro to produce TGF-β1 in situ and up regulate the expression of chondrogenesis-related genes in the construct. The expression of heterogeneous TGF-β1 in vivo declined along with the prolongation of implantation time, and lasted for 3 and 6 weeks in the mRNA and protein levels, respectively. The constructs (Experimental group) of PLGA/fibrin gel/MSCs/(PEO-b-PLL/pDNA-TGF-β1 complexes) were implanted into the osteochondral defects of rabbits to restore the functional cartilages, with gene-absent constructs as the Control. After 12 weeks, the Experimental group regenerated the neo-cartilage and subchondral bone with abundant deposition of glycosaminoglycans (GAGs) and type II collagen. The regenerated tissues had good integration with the host tissues too. By contrast, the defects were only partially repaired by the Control constructs. qRT-PCR results demonstrated that expression of the chondrogenesis-marker genes in the Experimental group was significantly higher than that of the Control group, and was very close to that of the normal cartilage tissue.
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Affiliation(s)
- Bo Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University, Hangzhou, 310027, China
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196
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Steinhauer W, Hoogenboom R, Keul H, Moeller M. Block and Gradient Copolymers of 2-Hydroxyethyl Acrylate and 2-Methoxyethyl Acrylate via RAFT: Polymerization Kinetics, Thermoresponsive Properties, and Micellization. Macromolecules 2013. [DOI: 10.1021/ma302606x] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Wiktor Steinhauer
- DWI an der
RWTH Aachen e.V.
and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Forckenbeckstrasse 50, 52056 Aachen, Germany
| | - Richard Hoogenboom
- DWI an der
RWTH Aachen e.V.
and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Forckenbeckstrasse 50, 52056 Aachen, Germany
- Supramolecular Chemistry Group,
Department of Organic Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Helmut Keul
- DWI an der
RWTH Aachen e.V.
and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Forckenbeckstrasse 50, 52056 Aachen, Germany
| | - Martin Moeller
- DWI an der
RWTH Aachen e.V.
and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Forckenbeckstrasse 50, 52056 Aachen, Germany
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197
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Kodiyath R, Choi I, Patterson B, Tsitsilianis C, Tsukruk VV. Interfacial behavior of pH responsive ampholytic heteroarm star block terpolymers. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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198
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Li W, Feng S, Guo Y. Tailoring polymeric micelles to optimize delivery to solid tumors. Nanomedicine (Lond) 2013; 7:1235-52. [PMID: 22931449 DOI: 10.2217/nnm.12.88] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Block copolymer micelles have shown great potential in drug delivery systems, not only for overcoming the drawbacks of small agents such as water insolubility and wide distribution in normal tissues, but also for avoiding traditional nanoparticle formulation shortcomings, including in vivo instability and fast clearance from the blood. However, for translating micellar formulations to clinical practice, it is essential to overcome the many in vivo obstacles. Surmounting these barriers strongly depends on micellar physicochemical properties, which can be further optimized by the unique physiological aspects of solid tumors such as low pH, high temperature and the presence of abnormal vessels. Herein, based on the Flory parameter and scaling theory, the fundamental mechanisms and correlations in vitro/in vivo between self assembly, drug loading and release, stability, intracellular delivery and in vivo distribution, as well as micellar composition, size and microstructural tailoring are systematically revisited. The methods for enhancing micellar performance in solid tumors were consequently proposed through well-defined core-corona structure tailoring.
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Affiliation(s)
- Wei Li
- International Joint Cancer Institute, The Second Military Medical University, 800 Xiangyin Road, Shanghai 200433, PR China.
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199
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Hanada S, Fujioka K, Futamura Y, Manabe N, Hoshino A, Yamamoto K. Evaluation of anti-inflammatory drug-conjugated silicon quantum dots: their cytotoxicity and biological effect. Int J Mol Sci 2013; 14:1323-34. [PMID: 23306154 PMCID: PMC3565323 DOI: 10.3390/ijms14011323] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 01/01/2013] [Accepted: 01/05/2013] [Indexed: 11/16/2022] Open
Abstract
Silicon quantum dots (Si-QDs) have great potential for biomedical applications, including their use as biological fluorescent markers and carriers for drug delivery systems. Biologically inert Si-QDs are less toxic than conventional cadmium-based QDs, and can modify the surface of the Si-QD with covalent bond. We synthesized water-soluble alminoprofen-conjugated Si-QDs (Ap-Si). Alminoprofen is a non-steroid anti-inflammatory drug (NSAID) used as an analgesic for rheumatism. Our results showed that the "silicon drug" is less toxic than the control Si-QD and the original drug. These phenomena indicate that the condensed surface integration of ligand/receptor-type drugs might reduce the adverse interaction between the cells and drug molecules. In addition, the medicinal effect of the Si-QDs (i.e., the inhibition of COX-2 enzyme) was maintained compared to that of the original drug. The same drug effect is related to the integration ratio of original drugs, which might control the binding interaction between COX-2 and the silicon drug. We conclude that drug conjugation with biocompatible Si-QDs is a potential method for functional pharmaceutical drug development.
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Affiliation(s)
- Sanshiro Hanada
- Vice Director-General’s Lab, Research Institute, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; E-Mails: (Y.F.); (N.M.); (A.H.); (K.Y.)
| | - Kouki Fujioka
- Department of Molecular Cell Biology, Institute of DNA Medicine, Jikei University School of Medicine, Tokyo 105-8461, Japan; E-Mail:
| | - Yasuhiro Futamura
- Vice Director-General’s Lab, Research Institute, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; E-Mails: (Y.F.); (N.M.); (A.H.); (K.Y.)
| | - Noriyoshi Manabe
- Vice Director-General’s Lab, Research Institute, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; E-Mails: (Y.F.); (N.M.); (A.H.); (K.Y.)
| | - Akiyoshi Hoshino
- Vice Director-General’s Lab, Research Institute, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; E-Mails: (Y.F.); (N.M.); (A.H.); (K.Y.)
| | - Kenji Yamamoto
- Vice Director-General’s Lab, Research Institute, National Center for Global Health and Medicine, Tokyo 162-8655, Japan; E-Mails: (Y.F.); (N.M.); (A.H.); (K.Y.)
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200
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Bussolati R, Carrieri P, Secchi A, Arduini A, Credi A, Semeraro M, Venturi M, Silvi S, Velluto D, Zappacosta R, Fontana A. Hierarchical self-assembly of amphiphilic calix[6]arene wheels and viologen axles in water. Org Biomol Chem 2013; 11:5944-53. [DOI: 10.1039/c3ob40739j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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