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Ke Y, Zhang X, Liu C, Xiao M, Li H, Fan J, Fu P, Wang S, Zan F, Wu G. Polypseudorotaxane functionalized magnetic nanoparticles as a dual responsive carrier for roxithromycin delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:159-170. [PMID: 30889688 DOI: 10.1016/j.msec.2019.01.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 12/12/2018] [Accepted: 01/18/2019] [Indexed: 12/20/2022]
Abstract
A magnetic-pH dual responsive drug delivery system was prepared for antibacterial therapy to reduce the side effects on nonpathological cells or tissues. Iron oxide (Fe3O4) core was surface-functionalized with silane coupling agents to link β‑cyclodextrin (β-CD) (CDMNP), and a polypseudorotaxanes shell where polyethyleneglycol chains threaded much CD molecules was further prepared on the magnetic Fe3O4 core (CDMNP-PEG-CD) to enhance loading capacity of roxithromycin (ROX). CDMNP-PEG-CD with a hydrodynamic diameter of ~168 nm was cytocompatible, superparamagnetic, magnetic-responsive and stable for 180 min of storage. No significant interaction with serum albumin was shown for the nanocomposites. The in vitro release from ROX-loaded CDMNP-PEG-CD nanocomposites was about 76% of total drug within 30 min at pH 1.0, 1.6-fold of that at pH 7.4 and 2-fold of that at pH 8.0, presenting pH-responsive drug release behaviors. The nanocomposites showed positive antibacterial activity against both E. coli and S. aureus based on an agar diffusion method. The antibacterial activity of the nanocomposites was more sensitive against E. coli than S. aureus, and the inhibition halo against E. coli was 85% more than that of Fe3O4. CDMNP-PEG-CD nanocomposites allowed for the localization and fast concentration of hydrophobic drugs, providing a broad potential range of therapeutic applications.
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Affiliation(s)
- Yu Ke
- Department of Biomedical Engineering, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
| | - Xiaoye Zhang
- Department of Biomedical Engineering, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Caikun Liu
- Department of Biomedical Engineering, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Meng Xiao
- Department of Materials Science and Engineering, School of Chemistry and Materials, Jinan University, Guangzhou 510632, China
| | - Hong Li
- Department of Materials Science and Engineering, School of Chemistry and Materials, Jinan University, Guangzhou 510632, China
| | - Jiachen Fan
- Department of Biomedical Engineering, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Pengcheng Fu
- Department of Biomedical Engineering, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China
| | - Shuhao Wang
- Department of Biomedical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Fei Zan
- Department of Biomedical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Gang Wu
- Department of Biomedical Engineering, South China University of Technology, Guangzhou 510641, China.
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Klaewklod A, Tantishaiyakul V, Hirun N, Sangfai T, Li L. Characterization of supramolecular gels based on β-cyclodextrin and polyethyleneglycol and their potential use for topical drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 50:242-50. [PMID: 25746267 DOI: 10.1016/j.msec.2015.02.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Revised: 01/08/2015] [Accepted: 02/11/2015] [Indexed: 10/24/2022]
Abstract
Novel gels were prepared by blending β-cyclodextrin and polyethyleneglycol (PEG) in the presence of K2CO3. The objective of this study was thus to characterize the gels using rheology, modulated temperature differential scanning calorimetry (MTDSC), turbidity measurements, and hot stage microscopy, and then investigate the potential use of the gel for topical drug delivery. Two types of supramolecular gels, GelL and GelH were prepared at a low temperature (below 50 °C) and at a high temperature (above 70 °C), respectively. Both gels were thermo-reversible. Upon heating, GelL could turn to GelH. Nevertheless, upon cooling, GelH that was more stable than GelL precipitated and GelL could not be reformed. GelL may form through simple complexation of polyethyleneglycol (PEG) with β-cyclodextrin in the presence of K2CO3. However, GelH may form a specific complex or a pseudopolyrotaxane gel. For pharmaceutical application, GelL was investigated instead of GelH because the forming temperature of this gel was close to the human body temperature. The interactions among diclofenac sodium (DS), a model drug, and the components of the gel were examined using FTIR. These interactions may include ionic attraction and hydrogen bonds between the carboxylate groups of DS and the hydroxyl groups of PEG or β-cyclodextrin and probably also the inclusion of the aromatic ring of DS into the cavity of β-cyclodextrin. Furthermore, the release and permeation of diclofenac from GelL were significantly greater than those from a commercial gel. Therefore, GelL may be useful for the topical delivery of drugs.
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Affiliation(s)
- Amornrat Klaewklod
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai 90112, Thailand
| | - Vimon Tantishaiyakul
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai 90112, Thailand; Nanotec, PSU Center of Excellence for Drug Delivery System, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai 90112, Thailand.
| | - Namon Hirun
- Theoretical and Computational Modeling Research Group and School of Pharmacy, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | - Tanatchaporn Sangfai
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat-Yai 90112, Thailand
| | - Lin Li
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
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Li Q, Luo L, Yan X, Zhou W, Wang F. Ionic self-assembled fluorescent microfibres with electrochemical properties. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.842646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Qiuhong Li
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P.R. China
| | - Linlin Luo
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P.R. China
| | - Xiaojie Yan
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P.R. China
| | - Wenting Zhou
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P.R. China
| | - Fang Wang
- School of Materials Science and Engineering, Shandong University of Technology, Zibo, Shandong, 255049, P.R. China
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