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Hosseini M, Amiri M, Ghanbari M, Mahdi MA, Abdulsahib WK, Salavati-Niasari M. Drug delivery based on chitosan, β-cyclodextrin and sodium carboxymethyl cellulose as well as nanocarriers for advanced leukemia treatment. Biomed Pharmacother 2022; 153:113369. [PMID: 35780615 DOI: 10.1016/j.biopha.2022.113369] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 02/09/2023] Open
Abstract
Medicine/nanotechnology as a new and applicable technique according to drug delivery systems has gained great consideration for cancer treatment. Polysaccharides including, cellulose, β-cyclodextrin and sodium carboxymethyl cellulose and chitosan as natural bio-materials, are appropriate candidates for designing and formulations of these nanosystems because of the exceptional advantages such as bio-compatibility, bio-degradability, non-toxicity, and gelling characteristics. An intelligent drug delivery platform based on these hybrids nowadays is developed, which can be used for dual-responsive dual-drug delivery. Nanotechnology accompany with biological molecules has been carefully considered to decrease the drawbacks of conventional cancer treatments. Consequently, this review is intended to state and investigate on the latest development on the combination treatment of platforms based on the hybrids of anticancer drugs/nanoparticles/Polysaccharides in the fields of biomedical therapeutics and cancer therapy owing to the bio-compatibility, great surface area, good chemical and mechanical features, the challenges and future perspectives are reported as well.
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Affiliation(s)
- Melika Hosseini
- Department of Chemistry, School of Physics and Chemistry, Alzahra University, Vanak, Tehran, Iran
| | - Mahnaz Amiri
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Science, Kerman, Iran; Department of Hematology and Laboratory Sciences, Faculty of Allied Medical Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | - Mojgan Ghanbari
- Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Iran
| | - Makarim A Mahdi
- Department of Chemistry, College of Education, University of Al-Qadisiyah, Diwaniya, Iraq
| | - Waleed K Abdulsahib
- Department of Pharmacology and Toxicology, College of Pharmacy, Al-Farahidi University, Baghdad, Iraq
| | - Masoud Salavati-Niasari
- Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Iran.
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2
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Chotchindakun K, Pekkoh J, Ruangsuriya J, Zheng K, Unalan I, Boccaccini AR. Fabrication and Characterization of Cinnamaldehyde-Loaded Mesoporous Bioactive Glass Nanoparticles/PHBV-Based Microspheres for Preventing Bacterial Infection and Promoting Bone Tissue Regeneration. Polymers (Basel) 2021; 13:1794. [PMID: 34072334 PMCID: PMC8198921 DOI: 10.3390/polym13111794] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/24/2021] [Accepted: 05/27/2021] [Indexed: 12/28/2022] Open
Abstract
Polyhydroxybutyrate-co-hydroxyvalerate (PHBV) is considered a suitable polymer for drug delivery systems and bone tissue engineering due to its biocompatibility and biodegradability. However, the lack of bioactivity and antibacterial activity hinders its biomedical applications. In this study, mesoporous bioactive glass nanoparticles (MBGN) were incorporated into PHBV to enhance its bioactivity, while cinnamaldehyde (CIN) was loaded in MBGN to introduce antimicrobial activity. The blank (PHBV/MBGN) and the CIN-loaded microspheres (PHBV/MBGN/CIN5, PHBV/MBGN/CIN10, and PHBV/MBGN/CIN20) were fabricated by emulsion solvent extraction/evaporation method. The average particle size and zeta potential of all samples were investigated, as well as the morphology of all samples evaluated by scanning electron microscopy. PHBV/MBGN/CIN5, PHBV/MBGN/CIN10, and PHBV/MBGN/CIN20 significantly exhibited antibacterial activity against Staphylococcus aureus and Escherichia coli in the first 3 h, while CIN releasing behavior was observed up to 7 d. Human osteosarcoma cell (MG-63) proliferation and attachment were noticed after 24 h cell culture, demonstrating no adverse effects due to the presence of microspheres. Additionally, the rapid formation of hydroxyapatite on the composite microspheres after immersion in simulated body fluid (SBF) during 7 d revealed the bioactivity of the composite microspheres. Our findings indicate that this system represents an alternative model for an antibacterial biomaterial for potential applications in bone tissue engineering.
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Affiliation(s)
- Kittipat Chotchindakun
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Jeeraporn Pekkoh
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
- Research Center of Microbial Diversity and Sustainable Utilization, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jetsada Ruangsuriya
- Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand;
- Functional Food Research Unit, Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kai Zheng
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (K.Z.); (I.U.)
| | - Irem Unalan
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (K.Z.); (I.U.)
| | - Aldo R. Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (K.Z.); (I.U.)
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Craparo EF, Drago SE, Giammona G, Cavallaro G. Production of polymeric micro- and nanostructures with tunable properties as pharmaceutical delivery systems. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122596] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Perveen K, Masood F, Hameed A. Preparation, characterization and evaluation of antibacterial properties of epirubicin loaded PHB and PHBV nanoparticles. Int J Biol Macromol 2020; 144:259-266. [DOI: 10.1016/j.ijbiomac.2019.12.049] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/30/2019] [Accepted: 12/05/2019] [Indexed: 12/31/2022]
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5
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Zhu J, Han H, Li F, Wang X, Yu J, Chu CC, Wu D. Self-assembly of amino acid-based random copolymers for antibacterial application and infection treatment as nanocarriers. J Colloid Interface Sci 2019; 540:634-646. [DOI: 10.1016/j.jcis.2018.12.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/05/2018] [Accepted: 12/26/2018] [Indexed: 11/24/2022]
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6
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Yuan Y, Choi K, Choi SO, Kim J. Early stage release control of an anticancer drug by drug-polymer miscibility in a hydrophobic fiber-based drug delivery system. RSC Adv 2018; 8:19791-19803. [PMID: 35540999 PMCID: PMC9080684 DOI: 10.1039/c8ra01467a] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 05/23/2018] [Indexed: 12/27/2022] Open
Abstract
The drug release profiles of doxorubicin-loaded electrospun fiber mats were investigated with regard to drug-polymer miscibility, fiber wettability and degradability. Doxorubicin in hydrophilic form (Dox-HCl) and hydrophobic free base form (Dox-base) was employed as model drugs, and an aliphatic polyester, poly(lactic acid) (PLA), was used as a drug-carrier matrix. When hydrophilic Dox-HCl was directly mixed with PLA solution, drug molecules formed large aggregates on the fiber surface or in the fiber core, due to poor drug-polymer compatibility. Drug aggregates on the fiber surface contributed to the rapid initial release. The hydrophobic form of Dox-base was dispersed better with PLA matrix compared to Dox-HCl. When dimethyl sulfoxide (DMSO) was used as the solvent for Dox-HCl, the miscibility of drug in the polymer matrix was significantly improved, forming a quasi-monolithic solution scheme. The drug release from this monolithic matrix was slowest, and this slow release led to a lower toxicity to hepatocellular carcinoma. When an enzyme was used to promote PLA degradation, the release rates were closely correlated with degradation rates, demonstrating degradation was the dominant release mechanism. The possible drug release mechanisms were speculated based on the release kinetics. The results suggest that manipulation of drug-polymer miscibility and polymer degradability can be an effective means of designing drug release profiles. The drug release profiles of doxorubicin-loaded electrospun fiber mats were investigated with regard to drug-polymer miscibility, fiber wettability and degradability.![]()
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Affiliation(s)
- Yue Yuan
- Department of Textile Engineering, Chemistry and Science
- North Carolina State University
- Raleigh
- USA
| | - Kyoungju Choi
- Department of Anatomy and Physiology
- Kansas State University
- Manhattan
- USA
- Nanotechnology Innovation Center of Kansas State
| | - Seong-O Choi
- Department of Anatomy and Physiology
- Kansas State University
- Manhattan
- USA
- Nanotechnology Innovation Center of Kansas State
| | - Jooyoun Kim
- Department of Textiles, Merchandising and Fashion Design
- Seoul National University
- Seoul 08826
- Republic of Korea
- Research Institute of Human Ecology
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7
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Li R, Zhang J, Chen J, Teng W, Wang J, Li C. Preparation and Characterization of Biological Non-toxic Hybrid Nanoparticles Based on Lactide and Poly(ethylene glycol) Loading Docetaxel for Anticancer Drug Delivery. Chin J Chem Eng 2014. [DOI: 10.1016/j.cjche.2014.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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8
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Graft copolymers via combination of cationic polymerization and atom transfer radical polymerization and their phase separation into spherical/worm-like nanostructures. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3249-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9
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Alam MA, Takafuji M, Ihara H. Silica nanoparticle-crosslinked thermosensitive hybrid hydrogels as potential drug-release carriers. Polym J 2014. [DOI: 10.1038/pj.2014.2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
Though much progress has been made in drug delivery systems, the design of a suitable carrier for the delivery of hydrophobic drugs is still a major challenge for researchers.
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Affiliation(s)
- Zaheer Ahmad
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad, Pakistan
| | - Afzal Shah
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad, Pakistan
- Department of Physical and Environmental Sciences
- University of Toronto
| | - Muhammad Siddiq
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad, Pakistan
| | - Heinz-Bernhard Kraatz
- Department of Physical and Environmental Sciences
- University of Toronto
- Toronto, Canada
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Masood F, Chen P, Yasin T, Fatima N, Hasan F, Hameed A. Encapsulation of Ellipticine in poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) based nanoparticles and its in vitro application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1054-60. [DOI: 10.1016/j.msec.2012.11.025] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 10/28/2012] [Accepted: 11/14/2012] [Indexed: 01/01/2023]
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Abstract
OBJECTIVES This mini-review describes the theoretical advantages of nanosizing drugs in terms of dissolution and the characterization of their behaviour with in-vitro dissolution testing. KEY FINDINGS It is shown that the increase in dissolution rate is not commensurate with common theories. The calculation of dissolution rate by surface area increase using the Nernst-Brunner equation is inappropriate since the diffusion layer, δ, cannot be assessed. These results highlight the importance of an appropriate experimental design to assess the dissolution rate in vitro, which will then serve as a building block for establishing in vitro-in vivo correlations. Several techniques to assess the amount of released drug in dissolution testing are discussed, some through a review of current literature (dialysis, turbidity measurement methods, fibre optics, asymmetrical flow-field-flow fractionation), some through experimental experience (ion-selective electrode and syringe filters). Further methods, such as microdialysis, ultrasonic resonance technology and centrifugal filter devices, are reviewed from literature with some additional data obtained in house. The techniques are further discussed with a view to coupling the results with simulation software tools such as STELLA© to predict the in-vivo behaviour of the drug. In doing so, it is necessary to generate experimental data on the dissolution rate, since this cannot be calculated directly from the surface increase of drug particles but rather depends on further factors such as the boundary layer thickness. SUMMARY It was concluded that syringe filters of appropriate pore size and the ion-selective electrode appear to be suitable for measurement of the dissolution rate of nanosized drugs.
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Affiliation(s)
- Daniel Jünemann
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt, Germany.
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Cheng R, Wang X, Chen W, Meng F, Deng C, Liu H, Zhong Z. Biodegradable poly(ε-caprolactone)-g-poly(2-hydroxyethyl methacrylate) graft copolymer micelles as superior nano-carriers for “smart” doxorubicin release. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30700f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Jung B, Jeong YC, Min JH, Kim JE, Song YJ, Park JK, Park JH, Kim JD. Tumor-binding prodrug micelles of polymer–drug conjugates for anticancer therapy in HeLa cells. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30534h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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15
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Zhang X, Zhang X, Wu Z, Gao X, Cheng C, Wang Z, Li C. A hydrotropic β-cyclodextrin grafted hyperbranched polyglycerol co-polymer for hydrophobic drug delivery. Acta Biomater 2011; 7:585-92. [PMID: 20813209 DOI: 10.1016/j.actbio.2010.08.029] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 08/19/2010] [Accepted: 08/27/2010] [Indexed: 12/31/2022]
Abstract
The development of successful formulations for poorly water soluble drugs remains a longstanding, critical, and challenging issue in cancer therapy. A β-cyclodextrin (CD) functionalized hyperbranched polyglycerol (HPG) has been prepared as a potential water insoluble drug carrier. The HPG-g-CD molecules could self-assemble into multimolecular spherical micelles in water, the size of which ranged from 200 to 300 nm, with good dispersity. A high loading capacity and high encapsulation efficiency of paclitaxel, as a model, were obtained. The release profiles of different co-polymer compositions showed a burst release followed by continuous extended release. Furthermore, MTT analysis showed that HPG-g-CD had good biocompatibility, indicating that HPG-g-CD may be considered a promising hydrophobic drug delivery system.
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Ahmed J, Varshney SK. Polylactides—Chemistry, Properties and Green Packaging Technology: A Review. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2011. [DOI: 10.1080/10942910903125284] [Citation(s) in RCA: 170] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chen S, Cheng SX, Zhuo RX. Self-assembly strategy for the preparation of polymer-based nanoparticles for drug and gene delivery. Macromol Biosci 2010; 11:576-89. [PMID: 21188686 DOI: 10.1002/mabi.201000427] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Indexed: 12/13/2022]
Abstract
Nanoparticulate drug-delivery systems have attained much importance because of their injectable property, the possibility to achieve passive targeting and active targeting, and unique advantages to realize stimuli tailored delivery. Molecular self-assembly is a powerful method for fabricating polymer-based nanoparticles, which involves various driving forces, such as hydrophobic interactions, electrostatic interactions, stereocomplexation, host/guest interactions and hydrogen bonding. By fine tuning one or many types of these interactions, self-assemblies with a wide range of structures and functions could be fabricated. In this article, recent developments in different self-assembly strategies for the preparation of polymer-based nanoparticulate delivery systems are discussed.
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Affiliation(s)
- Si Chen
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, China
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Sanson C, Schatz C, Le Meins JF, Soum A, Thévenot J, Garanger E, Lecommandoux S. A simple method to achieve high doxorubicin loading in biodegradable polymersomes. J Control Release 2010; 147:428-35. [DOI: 10.1016/j.jconrel.2010.07.123] [Citation(s) in RCA: 293] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Revised: 07/23/2010] [Accepted: 07/29/2010] [Indexed: 11/26/2022]
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Yuan W, Yuan J, Zhou L, Wu S, Hong X. Fe3O4@poly(2-hydroxyethyl methacrylate)-graft-poly(ɛ-caprolactone) magnetic nanoparticles with branched brush polymeric shell. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.04.016] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Effect of O/S/W process parameters on 17β-EV loaded nanoparticles properties. Colloids Surf B Biointerfaces 2010; 75:133-40. [DOI: 10.1016/j.colsurfb.2009.08.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Revised: 07/13/2009] [Accepted: 08/12/2009] [Indexed: 11/20/2022]
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21
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Guo XD, Zhang LJ, Chen Y, Qian Y. Core/shell pH-sensitive micelles self-assembled from cholesterol conjugated oligopeptides for anticancer drug delivery. AIChE J 2009. [DOI: 10.1002/aic.12119] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Lu F, Wang XL, Chen SC, Yang KK, Wang YZ. An efficient approach to synthesize polysaccharides-graft-poly(p-dioxanone) copolymers as potential drug carriers. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23584] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Cho JK, Park W, Na K. Self-organized nanogels from pullulan-g-poly(L-lactide) synthesized by one-pot method: Physicochemical characterization andin vitrodoxorubicin release. J Appl Polym Sci 2009. [DOI: 10.1002/app.30049] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Lai R, Guo H, Kamachi M. Synthesis of a graft polymer PVAc-g-[P(AN-r-BVE)-b-PCHO] in “one-step” by radical/cationic transformation polymerization and coupling reaction. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wu DQ, Lu B, Chang C, Chen CS, Wang T, Zhang YY, Cheng SX, Jiang XJ, Zhang XZ, Zhuo RX. Galactosylated fluorescent labeled micelles as a liver targeting drug carrier. Biomaterials 2008; 30:1363-71. [PMID: 19100617 DOI: 10.1016/j.biomaterials.2008.11.027] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Accepted: 11/27/2008] [Indexed: 10/21/2022]
Abstract
Galactosylated and fluorescein isothiocyanate (FITC) labeled polycaprolactone-g-dextran (Gal-PCL-g-Dex-FITC) polymers were synthesized. The grafted polymers can self-assemble into stable micelles in aqueous medium and in serum. Transmission electron microscopy (TEM) images showed that the self-assembled micelles were regularly spherical in shape. Micelle size determined by size analysis was around 120 nm. The anti-inflammation drug prednisone acetate as a model drug was loaded in the polymeric micelles, and the in vitro drug release was investigated. The galactosylated micelles could be selectively recognized by HepG2 cells and subsequently accumulate in HepG2 cells. The in vivo study demonstrated the relative uptake of the micelles by liver is much higher than the other tissues, indicating that the galactosylated micelles have great potential as a liver targeting drug carrier.
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Affiliation(s)
- De-Qun Wu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, China
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Controlling the size of poly(hydroxybutyrate-co-hydroxyvalerate) nanoparticles prepared by emulsification–diffusion technique using ethanol as surface agent. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2008.04.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Zhou YX, Li SL, Fu HL, Cheng SX, Zhang XZ, Zhuo RX. Fabrication and in vitro drug release study of microsphere drug delivery systems based on amphiphilic poly-α,β-[N-(2-hydroxyethyl)-l-aspartamide]-g-poly(l-lactide) graft copolymers. Colloids Surf B Biointerfaces 2008; 61:164-9. [PMID: 17851053 DOI: 10.1016/j.colsurfb.2007.08.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2007] [Revised: 07/30/2007] [Accepted: 08/01/2007] [Indexed: 10/23/2022]
Abstract
Biodegradable amphiphilic graft copolymers with different compositions were synthesized by grafting poly(L-lactide) (PLLA) sequences onto a water-soluble poly-alpha,beta-[N-(2-hydroxyethyl)-L-aspartamide] (PHEA) backbone. The critical micelle concentration (CMC) of the graft polymers was determined by fluorescence probe technique. Using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, the graft polymers were proved to have low cytotoxicity. Based on the specific physicochemical property of the graft copolymers, submicron sized microsphere drug delivery systems were prepared by a very convenient "ultrasonic dispersion method", which did not involve toxic organic solvents. The drug-loaded microspheres had a regular spherical shape with a narrow size distribution. A hydrophobic drug, prednisone acetate, was encapsulated into polymeric microspheres and the in vitro drug release was studied.
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Affiliation(s)
- Yu-Xiang Zhou
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
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Zou T, Li SL, Zhang XZ, Wu XJ, Cheng SX, Zhuo RX. Synthesis and characterization of a biodegradable amphiphilic copolymer based on branched poly(ε-caprolactone) and poly(ethylene glycol). ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pola.22270] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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