1
|
Cai D, Wang X, Wang Q, Tong P, Niu W, Guo X, Yu J, Chen X, Liu X, Zhou D, Yin F. Controlled release characteristics of alkyl gallates and gallic acid from β-cyclodextrin inclusion complexes of alkyl gallates. Food Chem 2024; 460:140726. [PMID: 39111044 DOI: 10.1016/j.foodchem.2024.140726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 07/16/2024] [Accepted: 07/30/2024] [Indexed: 09/06/2024]
Abstract
The freeze-drying approach was used to create inclusion complexes utilizing alkyl gallates and β-cyclodextrin, namely dodecyl gallate, octyl gallate, butyl gallate, and ethyl gallate, which are exemplary examples of phenolic esters. The everted-rat-gut-sac model demonstrated that the inclusion complexes released alkyl gallates, which were subsequently hydrolyzed to generate free gallic acid, as evidenced by HPLC-UV analysis. Both gallic acid and short-chain alkyl gallates were capable of permeating the small intestinal membrane. The transport rate of gallic acid (or alkyl gallates) exhibited an initial rise followed by a drop when the carbon-chain lengths varied. The inclusion complex groups exhibited a superior sustained-release effect compared to the comparable alkyl gallates groups, thus possibly leading to higher bioavailability and stronger bioactivity. Moreover, altering the length of the carbon chain will allow for the effortless achievement of regulated release of phenolic compounds and short-chain phenolic esters from such β-cyclodextrin inclusion complexes.
Collapse
Affiliation(s)
- Dong Cai
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Xinmiao Wang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Qian Wang
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Peiyong Tong
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Weiyuan Niu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Xu Guo
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Jinghan Yu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Xuan Chen
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, People's Republic of China
| | - Xiaoyang Liu
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Dayong Zhou
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China
| | - Fawen Yin
- SKL of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Key Laboratory for Marine Food Science and Technology, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China.
| |
Collapse
|
2
|
Wang X, Wang Q, Hu Y, Yin F, Liu X, Zhou D. Hydrolysis and transport characteristics of tyrosol-SCFA esters in rat intestine and blood: Two-step release of tyrosol and SCFAs to enhance the beneficial effects. Food Chem 2023; 414:135710. [PMID: 36821923 DOI: 10.1016/j.foodchem.2023.135710] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023]
Abstract
The models of rat everted gut sac and hydrolysis by rat plasma were used to clarify the hydrolysis and transport characteristics of tyrosol-SCFA esters (TYr-SEs). HPLC-UV results indicated that TYr-SEs could be hydrolyzed by intestinal lipase, which showed sustained release of SCFAs and TYr. Meanwhile, TYr-SEs and the liberated SCFAs and TYr could cross the membrane and were transported into blood circulation. TYr-SEs were further hydrolyzed by carboxylesterase in plasma. Obviously, the hydrolysis of TYr-SEs in blood also showed sustained release of SCFAs and TYr. Especially, the rates of hydrolysis and transport correlated positively with the acyl chain lengths. Besides, the above rates of the TYr-SE with a straight chain were greater than those of its isomer with a branched chain. Therefore, the above-mentioned two-step release of SCFAs and TYr clearly demonstrated that TYr-SEs would be an effective approach to enhance the beneficial health effects of SCFAs and TYr.
Collapse
Affiliation(s)
- Xinmiao Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Qian Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Yuanyuan Hu
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, PR China; Development of Food Industry, Shenzhen University, Shenzhen 518060, PR China
| | - Fawen Yin
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Xiaoyang Liu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Dayong Zhou
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| |
Collapse
|
3
|
Wang X, Wang Q, Yu J, Guo X, Tong P, Yin F, Liu X, Zhou D. The potential of hydroxytyrosol fatty acid esters to enhance oral bioavailabilities of hydroxytyrosol and fatty acids: Continuous and slow-release ability in small intestine and blood. Food Chem 2023; 422:136246. [PMID: 37126954 DOI: 10.1016/j.foodchem.2023.136246] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/03/2023]
Abstract
HPLC-UV analysis in rat everted gut sac and in vitro simulated digestion models indicated that hydroxytyrosol fatty acid esters (HTy-Es) could be hydrolyzed by pancreatic lipase to slow-release of free fatty acids (FAs) and HTy. Meanwhile, the HTy-Es, the liberated FAs and the HTy could cross the membrane and were transported into blood circulation. HTy-Es were further hydrolyzed by carboxylesterase in in vitro rat plasma hydrolysis model, which also showed slow-release of FAs (C1-C4) and HTy. Especially, the rates of hydrolysis and transport initially increased and then decreased with the increasing alkyl chain length. Besides, the above rates of the HTy-Es with a straight chain were greater than those of its isomer with a branched chain. Therefore, the above-mentioned continuous and slow-release of FAs and HTy in small intestine and blood clearly demonstrated that HTy-Es would be an effective approach to enhance oral bioavailabilities of free fatty acids and hydroxytyrosol.
Collapse
Affiliation(s)
- Xinmiao Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Qian Wang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Jinghan Yu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Xu Guo
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Peiyong Tong
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Fawen Yin
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China; State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Xiaoyang Liu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China; State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, PR China
| | - Dayong Zhou
- School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China; National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China; State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, PR China
| |
Collapse
|
4
|
Wang X, Chen K, Zhang X, Hu Y, Wang Z, Yin F, Liu X, Zhang J, Qin L, Zhou D. Effect of carbon chain length on the hydrolysis and transport characteristics of alkyl gallates in rat intestine. Food Funct 2021; 12:10581-10588. [PMID: 34614054 DOI: 10.1039/d1fo01732b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phenolipids such as alkyl gallates (A-GAs) have been approved by food industry as non-toxic antioxidant additives. However, their digestion and absorption mechanisms in the intestine have not yet been clarified. In this research, the hydrolysis and transport characteristics of A-GAs with fatty alcohols of various chain lengths (C1:0, C2:0, C3:0, C4:0, C8:0, C12:0 and C16:0) were estimated by the everted-rat-gut-sac model (ERGSM) for the first time. High-performance liquid chromatography measurements proved that measurable peaks corresponding to methyl gallate (G-C1:0), ethyl gallate (G-C2:0), propyl gallate (G-C3:0) and butyl gallate (G-C4:0) were discovered in the serosal fluids, which showed the short-chain alkyl gallates can cross the membrane in the form of esters. Besides, all A-GAs were hydrolyzed to GA in the mucosal solution, which contributed evidently to the transport of GA across the membrane of the small intestine. Meanwhile, the hydrolysis rate of A-GAs and transport rate of GA initially increased and then decreased with the chain length, exhibiting a maximum for octyl gallate (G-C8:0). In general, all A-GAs have the behavior of sustained-release. In consequence, the production of A-GAs should be an effective method to extend action time and further increases biological activities of GA.
Collapse
Affiliation(s)
- Xinmiao Wang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Kefan Chen
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Xiumin Zhang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Yuanyuan Hu
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Zixu Wang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Fawen Yin
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Xiaoyang Liu
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Jianghua Zhang
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China.
| | - Lei Qin
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| | - Dayong Zhou
- School of Food Science and Technology; Dalian Polytechnic University, Dalian 116034, PR China. .,National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, PR China
| |
Collapse
|
5
|
Guruprasad Reddy P, Domb AJ. Formation of micro/nanoparticles and microspheres from polyesters by dispersion ring‐opening polymerization. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pulikanti Guruprasad Reddy
- School of Pharmacy‐Faculty of Medicine The Hebrew University of Jerusalem, and Center for Cannabis Research and the Institute of Drug Research, The Alex Grass Center for Drug Design and Synthesis Jerusalem Israel
| | - Abraham J. Domb
- School of Pharmacy‐Faculty of Medicine The Hebrew University of Jerusalem, and Center for Cannabis Research and the Institute of Drug Research, The Alex Grass Center for Drug Design and Synthesis Jerusalem Israel
| |
Collapse
|
6
|
Styliari ID, Taresco V, Theophilus A, Alexander C, Garnett M, Laughton C. Nanoformulation-by-design: an experimental and molecular dynamics study for polymer coated drug nanoparticles. RSC Adv 2020; 10:19521-19533. [PMID: 35515456 PMCID: PMC9054057 DOI: 10.1039/d0ra00408a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/08/2020] [Indexed: 12/27/2022] Open
Abstract
The formulation of drug compounds into nanoparticles has many potential advantages in enhancing bioavailability and improving therapeutic efficacy. However, few drug molecules will assemble into stable, well-defined nanoparticulate structures. Amphiphilic polymer coatings are able to stabilise nanoparticles, imparting defined surface properties for many possible drug delivery applications. In the present article we explore, both experimentally and in silico, a potential methodology to coat drug nanoparticles with an amphiphilic co-polymer. Monomethoxy polyethylene glycol-polycaprolactone (mPEG-b-PCL) diblock copolymers with different mPEG lengths (M w 350, 550, 750 and 2000), designed to give different levels of colloidal stability, were used to coat the surface of indomethacin nanoparticles. Polymer coating was achieved by a flow nanoprecipitation method that demonstrated excellent batch-to-batch reproducibility and resulted in nanoparticles with high drug loadings (up to 78%). At the same time, in order to understand this modified nanoprecipitation method at an atomistic level, large-scale all-atom molecular dynamics simulations were performed in parallel using the GROMOS53a6 forcefield parameters. It was observed that the mPEG-b-PCL chains act synergistically with the acetone molecules to dissolve the indomethacin nanoparticle while after the removal of the acetone molecules (mimicking the evaporation of the organic solvent) a polymer-drug nanoparticle was formed (yield 99%). This work could facilitate the development of more efficient methodologies for producing nanoparticles of hydrophobic drugs coated with amphiphilic polymers. The atomistic insight from the MD simulations in tandem with the data from the drug encapsulation experiments thus leads the way to a nanoformulation-by-design approach for therapeutic nanoparticles.
Collapse
Affiliation(s)
| | - Vincenzo Taresco
- School of Pharmacy, University of Nottingham Nottingham NG7 2RD UK
| | | | | | - Martin Garnett
- School of Pharmacy, University of Nottingham Nottingham NG7 2RD UK
| | - Charles Laughton
- School of Pharmacy, University of Nottingham Nottingham NG7 2RD UK
| |
Collapse
|
7
|
Yin F, Wang X, Hu Y, Xie H, Liu X, Qin L, Zhang J, Zhou D, Shahidi F. Evaluation of Absorption and Plasma Pharmacokinetics of Tyrosol Acyl Esters in Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:1248-1256. [PMID: 31927921 DOI: 10.1021/acs.jafc.9b05112] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Lipophenols are regarded as an emerging source of functional food ingredients. However, little is known about their in vivo digestion, absorption, and metabolism. Thus, the pharmacokinetic characteristics in rat and the gut microbial degradation of tyrosol acyl esters (TYr-Es) with fatty acids of C12:0, C18:0, and C18:2 were investigated for the first time. Major metabolites including tyrosol sulfate and tyrosol glucuronide, rather than the parent compounds, were detected in rat plasma after oral administration of TYr-Es. The increased plasma half-life (T1/2) and mean residence time demonstrated that TYr-Es display a longer duration of action in vivo than TYr, potentially leading to higher oral bioavailability. TYr-Es could be hydrolyzed by the gut microbiota to free TYr, which may result in the appearance of the second absorption peak in pharmacokinetic profiles. Therefore, TYr-Es exhibit improved bioavailability compared to that of TYr because of their prolonged duration of action.
Collapse
Affiliation(s)
- Fawen Yin
- School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Xinmiao Wang
- School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Yuanyuan Hu
- School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Hongkai Xie
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing 100083 , People's Republic of China
| | - Xiaoyang Liu
- School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Lei Qin
- School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Jianghua Zhang
- School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Dayong Zhou
- School of Food Science and Technology , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
- National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Fereidoon Shahidi
- Department of Biochemistry , Memorial University of Newfoundland , St. John's , Newfoundland A1B 3X9 , Canada
| |
Collapse
|
8
|
Yin F, Hu X, Zhou D, Ma X, Tian X, Huo X, Rakariyatham K, Shahidi F, Zhu B. Hydrolysis and Transport Characteristics of Tyrosol Acyl Esters in Rat Intestine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12521-12526. [PMID: 30403136 DOI: 10.1021/acs.jafc.8b04487] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Lipophenols such as palmitoyl esters of green-tea polyphenols (GTP) have been allowed for use as food additives for oxidation control. However, their digestive absorption remains unexplored. In this paper, the hydrolysis and transport characteristics of tyrosol acyl esters (TYr-Es) with various fatty acids (C12:0, C14:0, C16:0, C18:0, C18:1, and C18:2) were evaluated using the everted-rat-gut-sac model for the first time. HPLC-UV measurements demonstrated that TYr-Es were hydrolyzed to TYr, which contributed significantly to TYr transport across the sacs. The hydrolysis and transport rates correlated negatively with the chain lengths of their lipid moieties but showed a positive correlation with the degree of unsaturation. In general, all TYr-Es exhibited sustained-release behavior; therefore, the production of TYr-Es may serve as a useful way to prolong the duration of action and further improve the bioactivities of TYr.
Collapse
Affiliation(s)
- Fawen Yin
- School of Food Science and Technology, National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Xiaopei Hu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing 100083 , People's Republic of China
| | - Dayong Zhou
- School of Food Science and Technology, National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Xiaochi Ma
- School of Pharmacy , Dalian Medical University , Dalian 116044 , People's Republic of China
| | - Xiangge Tian
- School of Pharmacy , Dalian Medical University , Dalian 116044 , People's Republic of China
| | - Xiaokui Huo
- School of Pharmacy , Dalian Medical University , Dalian 116044 , People's Republic of China
| | - Kanyasiri Rakariyatham
- School of Food Science and Technology, National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
| | - Fereidoon Shahidi
- Department of Biochemistry , Memorial University of Newfoundland , St. John's , NL A1B 3X9 , Canada
| | - Beiwei Zhu
- School of Food Science and Technology, National Engineering Research Center of Seafood , Dalian Polytechnic University , Dalian 116034 , People's Republic of China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing 100083 , People's Republic of China
| |
Collapse
|
9
|
Taymouri S, Varshosaz J, Javanmard SH, Hassanzadeh F. Development of a Rapid and Precise Reversed-phase High-performance Liquid Chromatography Method for Analysis of Docetaxel in Rat Plasma: Application in Single-dose Pharmacokinetic Studies of Folate-targeted Micelles Containing Docetaxel. Adv Biomed Res 2018; 7:76. [PMID: 29930916 PMCID: PMC5991273 DOI: 10.4103/abr.abr_251_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background: A simple and sensitive reversed-phase high-performance liquid chromatography (HPLC) method based on liquid-liquid extraction was established and validated for determination of docetaxel (DTX) in plasma of rat. Materials and Methods: Samples were spiked with paclitaxel as the internal standard and the chromatographic separation was carried out using C18 HPLC column. The mobile phase consisted of a mixture of acetonitrile/water with the ratio of 60/40 v/v. The ultraviolet detector was operated at 230 nm, and the flow rate of mobile phase was 1 ml/min. The method was validated for linearity, precision, accuracy, recovery, and limit of quantification (LOQ). Then the method was applied to quantify DTX in the rat plasma after intravenous (IV) administration of the self-assembled micelles of folate-targeted Synpronic F127/cholesterol (FA-PF127-Chol) loaded with DTX and Taxotere® as the reference marketed solution of DTX. The blood samples were taken from the ophthalmic vein at predetermined time intervals after treatment. Results: Calibration curve was linear between the concentration ranges of 0.1–7.5 μg/ml with the relative standard deviation % and evaluating error % ranged from 2.263 to 15.53 and −12.75 to 12.7 for intra- and inter-day validity, respectively. The mean recovery of the drug after plasma extraction was 95.67 ± 0.99% for the concentration of 1 μg/ml. The LOQ and the limit of detection for DTX in serum were 100 ng/ml and 30 ng/ml, respectively. Conclusions: The results indicated that the developed method could be adopted for pharmacokinetic studies of DTX-loaded FA-PF127-Chol micelles and Taxotere® in rat.
Collapse
Affiliation(s)
- Somayeh Taymouri
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Farshid Hassanzadeh
- Department of Medicinal Chemistry, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
10
|
Lee HY, Park JH, Ji YB, Kwon DY, Lee BK, Kim JH, Park K, Kim MS. Preparation of pendant group-functionalized amphiphilic diblock copolymers in the presence of a monomer activator and evaluation as temperature-responsive hydrogels. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
11
|
Synthesis and characterization of poly(ester ether urethane)s block copolymers based on biodegradable poly(butylene succinate) and Poly(ethylene glycol). Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.04.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
12
|
Raycraft BM, MacDonald JP, McIntosh JT, Shaver MP, Gillies ER. Post-polymerization functionalization of poly(ethylene oxide)–poly(β-6-heptenolactone) diblock copolymers to tune properties and self-assembly. Polym Chem 2017. [DOI: 10.1039/c6py01785a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Copolymers were synthesized and functionalized with a variety of moieties to tune self-assembly and install drugs or fluorescent dyes.
Collapse
Affiliation(s)
- Brooke M. Raycraft
- Department of Chemistry and Center for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada N6A 5B7
| | - Jarret P. MacDonald
- Department of Chemistry and Center for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada N6A 5B7
- School of Chemistry
| | - James T. McIntosh
- Department of Chemistry and Center for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada N6A 5B7
| | | | - Elizabeth R. Gillies
- Department of Chemistry and Center for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada N6A 5B7
- Department of Chemical and Biochemical Engineering
| |
Collapse
|
13
|
Thévenaz DC, Monnier CA, Balog S, Fiore GL. Luminescent Nanoparticles with Lanthanide-Containing Poly(ethylene glycol)–Poly(ε-caprolactone) Block Copolymers. Biomacromolecules 2014; 15:3994-4001. [DOI: 10.1021/bm501058n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- David C. Thévenaz
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Christophe A. Monnier
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Sandor Balog
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| | - Gina L. Fiore
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, CH-1700, Fribourg, Switzerland
| |
Collapse
|
14
|
Characteristics and release profiles of MPEG-PCL-MPEG microspheres containing immunoglobulin G. Colloids Surf B Biointerfaces 2014; 117:487-96. [DOI: 10.1016/j.colsurfb.2014.01.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 01/21/2014] [Accepted: 01/26/2014] [Indexed: 01/09/2023]
|
15
|
Yan F, Li B, Shen F, Fu Q. Formulation and characterization of albumin microspheres containing norcantharidate for liver tumor targeting. Drug Deliv 2014; 22:862-8. [DOI: 10.3109/10717544.2014.898715] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
16
|
Bassyouni F, ElHalwany N, Abdel Rehim M, Neyfeh M. Advances and new technologies applied in controlled drug delivery system. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1338-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
17
|
Bury K, Du Prez F, Neugebauer D. Self-assembling Linear and Star Shaped Poly(ϵ-caprolactone)/poly[(meth)acrylic acid] Block Copolymers as Carriers of Indomethacin and Quercetin. Macromol Biosci 2013; 13:1520-30. [DOI: 10.1002/mabi.201300179] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 06/05/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Katarzyna Bury
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry; Silesian University of Technology; M. Strzody 9, 44-100 Gliwice Poland
| | - Filip Du Prez
- Department of Organic Chemistry, Polymer Chemistry Research Group, Faculty of Science; Ghent University; Krijgslaan 281 S4-bis, B-9000 Ghent Belgium
| | - Dorota Neugebauer
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry; Silesian University of Technology; M. Strzody 9, 44-100 Gliwice Poland
| |
Collapse
|
18
|
Oni-Orisan A, Deng Y, Schuck RN, Theken KN, Edin ML, Lih FB, Molnar K, DeGraff L, Tomer KB, Zeldin DC, Lee CR. Dual modulation of cyclooxygenase and CYP epoxygenase metabolism and acute vascular inflammation in mice. Prostaglandins Other Lipid Mediat 2013; 104-105:67-73. [PMID: 23000418 PMCID: PMC3549041 DOI: 10.1016/j.prostaglandins.2012.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 09/07/2012] [Accepted: 09/08/2012] [Indexed: 01/12/2023]
Abstract
Cyclooxygenase (COX)-derived prostaglandins and cytochrome P450 (CYP) epoxygenase-derived epoxyeicosatrienoic acids are important regulators of inflammation; however, functional interactions between these pathways in the regulation of vascular inflammation in vivo have not been studied. We investigated the relative and additive effects of endothelial CYP2J2 overexpression (Tie2-CYP2J2-Tr), global sEH disruption (Ephx2(-/-)), and pharmacologic COX inhibition with indomethacin on the acute vascular inflammatory response to endotoxin in mice. Compared to vehicle-treated wild-type C57BL/6 controls, induction of myeloperoxidase (MPO) activity in lung and liver was similarly attenuated in Tie2-CYP2J2-Tr mice, Ephx2(-/-) mice and wild-type mice treated with moderate dose indomethacin. Dual modulation of both pathways, however, did not produce an additive anti-inflammatory effect. These findings demonstrate that both COX and CYP epoxygenase-mediated eicosanoid metabolism are important regulators of the acute vascular inflammatory response in vivo, and suggest that the anti-inflammatory effects of modulating each pathway may be mediated, at least in part, by overlapping mechanisms.
Collapse
Affiliation(s)
- Akinyemi Oni-Orisan
- Division of Pharmacotherapy and Experimental Therapeutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, United States
| | - Yangmei Deng
- Division of Pharmacotherapy and Experimental Therapeutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, United States
| | - Robert N. Schuck
- Division of Pharmacotherapy and Experimental Therapeutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, United States
| | - Katherine N. Theken
- Division of Pharmacotherapy and Experimental Therapeutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, United States
| | - Matthew L. Edin
- Laboratory of Respiratory Biology, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, 27709, United States
| | - Fred B. Lih
- Laboratory of Respiratory Biology, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, 27709, United States
| | - Kimberly Molnar
- Division of Pharmacotherapy and Experimental Therapeutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, United States
| | - Laura DeGraff
- Laboratory of Respiratory Biology, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, 27709, United States
| | - Kenneth B. Tomer
- Laboratory of Respiratory Biology, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, 27709, United States
| | - Darryl C. Zeldin
- Laboratory of Respiratory Biology, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, 27709, United States
| | - Craig R. Lee
- Division of Pharmacotherapy and Experimental Therapeutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, United States
| |
Collapse
|
19
|
Li X, Zhao Y, Bing Y, Li Y, Gan N, Guo Z, Peng Z, Zhu Y. Biotemplated syntheses of macroporous materials for bone tissue engineering scaffolds and experiments in vitro and vivo. ACS APPLIED MATERIALS & INTERFACES 2013; 5:5557-5562. [PMID: 23742223 DOI: 10.1021/am400779e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The macroporous materials were prepared from the transformation of cuttlebone as biotemplates under hydrothermal reactions and characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric/differential thermal analyses (TG-DTA), and scanning electron microscopy (SEM). Cell experimental results showed that the prepared materials as bone tissue engineering scaffolds or fillers had fine biocompatibility suitable for adhesion and proliferation of the hMSCs (human marrow mesenchymal stem cells). Histological analyses were carried out by implanting the scaffolds into a rabbit femur, where the bioresorption, degradation, and biological activity of the scaffolds were observed in the animal body. The prepared scaffolds kept the original three-dimensional frameworks with the ordered porous structures, which made for blood circulation, nutrition supply, and the cells implantation. The biotemplated syntheses could provide a new effective approach to prepare the bone tissue engineering scaffold materials.
Collapse
Affiliation(s)
- Xing Li
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, PR China.
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Zhou X, Wang C, Feng S, Chang J, Kong X, Liu Y, Gao S. Transactivating-transduction protein-polyethylene glycol modified liposomes traverse the blood-spinal cord and blood-brain barriers. Neural Regen Res 2012; 7:2784-92. [PMID: 25317128 PMCID: PMC4190860 DOI: 10.3969/j.issn.1673-5374.2012.35.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 11/07/2012] [Indexed: 11/18/2022] Open
Abstract
Naive liposomes can cross the blood-brain barrier and blood-spinal cord barrier in small amounts. Liposomes modified by a transactivating-transduction protein can deliver antibiotics for the treatment of acute bacterial infection-induced brain inflammation. Liposomes conjugated with polyethylene glycol have the capability of long-term circulation. In this study we prepared transactivating-transduction protein-polyethylene glycol-modified liposomes labeled with fluorescein isothiocyanate. Thus, liposomes were characterized by transmembrane, long-term circulation and fluorescence tracing. Uptake, cytotoxicity, and the ability of traversing blood-spinal cord and blood-brain barriers were observed following coculture with human breast adenocarcinoma cells (MCF-7). Results demonstrated that the liposomes had good biocompatibility, and low cytotoxicity when cocultured with human breast adenocarcinoma cells. Liposomes could traverse cell membranes and entered the central nervous system and neurocytes through the blood-spinal cord and blood-brain barriers of rats via the systemic circulation. These results verified that fluorescein isothiocyanate-modified transactivating-transduction protein-polyethylene glycol liposomes have the ability to traverse the blood-spinal cord and blood-brain barriers.
Collapse
Affiliation(s)
- Xianhu Zhou
- Department of Orthopedic Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Chunyuan Wang
- Department of Orthopedic Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shiqing Feng
- Department of Orthopedic Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Jin Chang
- School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Xiaohong Kong
- Medicine College, Nankai University, Tianjin 300071, China
| | - Yang Liu
- Department of Orthopedic Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Shijie Gao
- Department of Orthopedic Surgery, Tianjin Medical University General Hospital, Tianjin 300052, China
| |
Collapse
|
21
|
Chen WH, Hua MY, Lee RS. Synthesis and characterization of poly(ethylene glycol)-b-poly(ε-caprolactone) copolymers with functional side groups on the polyester block. J Appl Polym Sci 2012. [DOI: 10.1002/app.36225] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
22
|
Bhatt S, Pulpytel J, Mirshahi M, Arefi-Khonsari F. Nano thick poly(ε-caprolactone)-poly(ethylene glycol) coatings developed by catalyst-free plasma assisted copolymerization process for biomedical applications. RSC Adv 2012. [DOI: 10.1039/c2ra21211k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
23
|
ABC block copolymer as “smart” pH-responsive carrier for intracellular delivery of hydrophobic drugs. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.05.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
24
|
Soliman GM, Sharma R, Choi AO, Varshney SK, Winnik FM, Kakkar AK, Maysinger D. Tailoring the efficacy of nimodipine drug delivery using nanocarriers based on A2B miktoarm star polymers. Biomaterials 2010; 31:8382-92. [DOI: 10.1016/j.biomaterials.2010.07.039] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Accepted: 07/07/2010] [Indexed: 01/05/2023]
|
25
|
|
26
|
Anionic polymerization of cyclic ester and amide in miniemulsion: Synthesis and characterization of poly(ε-caprolactone) and poly(ε-caprolactone-co-ε-caprolactam) nanoparticles. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24287] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
27
|
He WN, Xu JT, Du BY, Fan ZQ, Wang X. Inorganic-Salt-Induced Morphological Transformation of Semicrystalline Micelles of PCL-b-PEO Block Copolymer in Aqueous Solution. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.201000184] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
28
|
Zheng X, Wang X, Gou M, Zhang J, Men K, Chen L, Luo F, Zhao X, Wei Y, Qian Z. A novel transdermal honokiol formulation based on Pluronic F127 copolymer. Drug Deliv 2010; 17:138-44. [DOI: 10.3109/10717541003604874] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
|
29
|
Zhang W, He J, Liu Z, Ni P, Zhu X. Biocompatible and pH-responsive triblock copolymer mPEG-b
-PCL-b
-PDMAEMA: Synthesis, self-assembly, and application. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.23863] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
30
|
Cattani VB, Fiel LA, Jäger A, Jäger E, Colomé LM, Uchoa F, Stefani V, Dalla Costa T, Guterres SS, Pohlmann AR. Lipid-core nanocapsules restrained the indomethacin ethyl ester hydrolysis in the gastrointestinal lumen and wall acting as mucoadhesive reservoirs. Eur J Pharm Sci 2009; 39:116-24. [PMID: 19932749 DOI: 10.1016/j.ejps.2009.11.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Revised: 11/12/2009] [Accepted: 11/14/2009] [Indexed: 11/19/2022]
Abstract
The aim of this work was to investigate if the indomethacin ethyl ester (IndOEt) released from lipid-core nanocapsules (NC) is converted into indomethacin (IndOH) in the intestine lumen, intestine wall or after the particles reach the blood stream. NC-IndOEt had monomodal size distribution (242 nm; PDI 0.2) and zeta potential of -11 mV. The everted rat gut sac model showed IndOEt passage of 0.16 micromol m(-2) through the serosal fluid (30 min). From 15 to 120 min, the IndOEt concentrations in the tissue increased from 6.13 to 27.47 micromol m(-2). No IndOH was formed ex vivo. A fluorescent-NC formulation was used to determine the copolymer bioadhesion (0.012 micromol m(-2)). After NC-IndOEt oral administration to rats, IndOEt and IndOH were detected in the gastrointestinal tract (contents and tissues). In the tissues, the IndOEt concentrations decreased from 459 to 5 microg g(-1) after scrapping, demonstrating the NC mucoadhesion. In plasma (peripheric and portal vein), in spleen and liver, exclusively IndOH was detected. In conclusion, after oral dosing of NC-IndOEt, IndOEt is converted into IndOH in the intestinal lumen and wall before reaching the blood stream. The complexity of a living system was not predicted by the ex vivo gut sac model.
Collapse
Affiliation(s)
- Vitória Berg Cattani
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, 2752, Porto Alegre, RS, 90610-000, Brazil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Wei X, Gong C, Gou M, Fu S, Guo Q, Shi S, Luo F, Guo G, Qiu L, Qian Z. Biodegradable poly(ɛ-caprolactone)–poly(ethylene glycol) copolymers as drug delivery system. Int J Pharm 2009; 381:1-18. [DOI: 10.1016/j.ijpharm.2009.07.033] [Citation(s) in RCA: 256] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 07/25/2009] [Accepted: 07/29/2009] [Indexed: 01/02/2023]
|
32
|
Self-Assembled Hydrophobic Honokiol Loaded MPEG-PCL Diblock Copolymer Micelles. Pharm Res 2009; 26:2164-73. [DOI: 10.1007/s11095-009-9929-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Accepted: 06/15/2009] [Indexed: 01/14/2023]
|
33
|
Self-assembled honokiol-loaded micelles based on poly(ɛ-caprolactone)-poly(ethylene glycol)-poly(ɛ-caprolactone) copolymer. Int J Pharm 2009; 369:170-5. [DOI: 10.1016/j.ijpharm.2008.10.027] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Accepted: 10/26/2008] [Indexed: 11/22/2022]
|
34
|
Aliabadi HM, Shahin M, Brocks DR, Lavasanifar A. Disposition of drugs in block copolymer micelle delivery systems: from discovery to recovery. Clin Pharmacokinet 2009; 47:619-34. [PMID: 18783294 DOI: 10.2165/00003088-200847100-00001] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Since their discovery in the early 1980s, polymeric micelles have been the subject of several studies as delivery systems that can potentially improve the therapeutic performance and modify the toxicity profile of encapsulated drugs by changing their pharmacokinetic characteristics. The efforts in this area have led in recent years to the advancement of several polymeric micellar formulations to clinical trials, some of which have shown promise in changing the biodistribution of the incorporated drug after intravenous administration as a means of tumour-targeted drug delivery. Recently, the possible benefit of polymeric micellar delivery in enhancing the absorption and bioavailability of incorporated drugs from alternative routes of drug administration has attracted interest. This article provides an overview of the effect of polymeric micellar delivery on absorption, distribution, metabolism and excretion of incorporated therapeutic agents. It also aims to assess the current information on the performance of polymeric micellar delivery systems in modifying the pharmacokinetics/pharmacodynamics of the incorporated drugs in clinical trials, and to re-examine the important structural factors required for successful design of polymeric micellar delivery systems capable of inducing favourable changes in the pharmacokinetics of the encapsulated drug.
Collapse
|
35
|
Chang YC, Chu IM. Methoxy poly(ethylene glycol)-b-poly(valerolactone) diblock polymeric micelles for enhanced encapsulation and protection of camptothecin. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.09.021] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
36
|
Ma Z, Haddadi A, Molavi O, Lavasanifar A, Lai R, Samuel J. Micelles of poly(ethylene oxide)-b-poly(epsilon-caprolactone) as vehicles for the solubilization, stabilization, and controlled delivery of curcumin. J Biomed Mater Res A 2008; 86:300-10. [PMID: 17957721 DOI: 10.1002/jbm.a.31584] [Citation(s) in RCA: 148] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Curcumin is recognized as a potential chemotherapeutic agent against a variety of tumors. However, the clinical application of curcumin is hindered due to its poor water solubility and fast degradation. The objective of this study was to investigate amphiphilic block copolymer micelles of poly(ethylene oxide)-b-poly(epsilon-caprolactone) (PEO-PCL) as vehicles for the solubilization, stabilization, and controlled delivery of curcumin. Curcumin-loaded PEO-PCL micelles were prepared by a cosolvent evaporation technique. PEO-PCL micelles were able to solubilize curcumin effectively, protect the encapsulated curcumin from hydrolytical degradation in physiological matrix, and control the release of curcumin over a few days. The characteristics of resultant micelles were found to depend on the polymerization degrees of epsilon-caprolactone. Among different PEO-PCL micelles, PEO(5000)-PCL(24500) was the most efficient in solubilizing curcumin while PEO(5000)-PCL(13000) was the best carrier in reducing its release rate. PEO-PCL micelle-encapsulated curcumin retained its cytotoxicity in B16-F10, a mouse melanoma cell line, and SP-53, Mino, and JeKo-1 human mantle cell lymphoma cell lines. These results demonstrated the potential of PEO-PCL micelles as an injectable formulation for efficient solubilization, stabilization, and controlled delivery of curcumin.
Collapse
Affiliation(s)
- Zengshuan Ma
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2N8
| | | | | | | | | | | |
Collapse
|
37
|
Kim SY, Cho SH, Lee YM, Chu LY. Biotin-conjugated block copolymeric nanoparticles as tumor-targeted drug delivery systems. Macromol Res 2007. [DOI: 10.1007/bf03218945] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
38
|
Dong Y, Feng SS. Poly(d,l-lactide-co-glycolide) (PLGA) nanoparticles prepared by high pressure homogenization for paclitaxel chemotherapy. Int J Pharm 2007; 342:208-14. [PMID: 17560058 DOI: 10.1016/j.ijpharm.2007.04.031] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 04/03/2007] [Accepted: 04/25/2007] [Indexed: 10/23/2022]
Abstract
High pressure homogenization was employed in the current work to prepare poly(D,L-lactide-co-glycolide) (PLGA) nanoparticles (NPs) for controlled release of paclitaxel. The prepared drug-loaded PLGA NPs were found of spherical shape with a size of 200-300 nm. The drug encapsulation efficiency ranged from 34.8+/-1.6 to 62.6+/-7.9% depending on the homogenization pressure and cycles. Paclitaxel was released from the nanoparticles in a biphasic profile with a fast release rate in the first 3 days followed by a slow first-order release. A higher or comparable cytotoxicity against glioma C6 cells was found for the drug formulated in the PLGA NPs in comparison with the free drug Taxol. Confocal laser scanning microscopy (CLSM) evidenced internalization of the fluorescent coumarin 6-loaded PLGA NPs by the C6 cells. The freeze-dried nanoparticles were found to possess excellent water redispersability. The high pressure homogenization could be applied for large industrial scale production of nanoparticles for drug delivery.
Collapse
Affiliation(s)
- Yuancai Dong
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Block E5, 02-11, 4 Engineering Drive 4, Singapore 117576, Singapore
| | | |
Collapse
|
39
|
|
40
|
Liu J, Zeng F, Allen C. In vivo fate of unimers and micelles of a poly(ethylene glycol)-block-poly(caprolactone) copolymer in mice following intravenous administration. Eur J Pharm Biopharm 2007; 65:309-19. [PMID: 17257817 DOI: 10.1016/j.ejpb.2006.11.010] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2006] [Revised: 10/31/2006] [Accepted: 11/01/2006] [Indexed: 11/26/2022]
Abstract
Methoxy poly(ethylene glycol)-b-poly(caprolactone) (MePEG-b-PCL) copolymers with varying PEG block lengths and a constant PCL block length were synthesized by cationic ring-opening polymerization and used to form nano-sized micelles. Due to their small size and superior in vitro stability, the MePEG(5000)-b-PCL(5000) micelles were selected for further in vitro characterization and an in vivo evaluation of their fate and stability following intravenous (i.v.) administration. Specifically, (3)H-labelled MePEG(5000)-b-PCL(5000) micelles were i.v. administered to Balb/C mice at copolymer doses of 250, 2 and 0.2 mg/kg in order to examine the distribution kinetics of (1) copolymer assembled as thermodynamically stable micelles, (2) copolymer assembled as thermodynamically unstable micelles and (3) copolymer unimers, respectively. Overall, it was found that when the copolymer is assembled as thermodynamically stable micelles the material is effectively restricted to the plasma compartment. Interestingly, the copolymer was found to have a relatively long circulation half-life even when administered at a dose that would likely fall to concentrations below the CMC following distribution. Analysis of plasma samples from this group revealed that even 24 h post-administration a significant portion of the copolymer remained assembled as intact micelles. In this way, this study demonstrates that the hydrophobic and semi-crystalline nature of the PCL core imparts a high degree of kinetic stability to this micelle system.
Collapse
Affiliation(s)
- Jubo Liu
- Department of Pharmaceutical Sciences, University of Toronto, Toronto, Ont., Canada
| | | | | |
Collapse
|
41
|
Letchford K, Burt H. A review of the formation and classification of amphiphilic block copolymer nanoparticulate structures: micelles, nanospheres, nanocapsules and polymersomes. Eur J Pharm Biopharm 2006; 65:259-69. [PMID: 17196803 DOI: 10.1016/j.ejpb.2006.11.009] [Citation(s) in RCA: 713] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2006] [Revised: 11/09/2006] [Accepted: 11/17/2006] [Indexed: 11/19/2022]
Abstract
Amphiphilic block copolymers are able to form a range of different nanoparticulate structures. These include micelles, nanospheres, nanocapsules, and polymersomes. This review attempts to clarify some of the terminology used in the literature by providing an overview of the major features of each type of nanoparticle and the factors that influence the formation of particular nanoparticulate formulations.
Collapse
Affiliation(s)
- Kevin Letchford
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada
| | | |
Collapse
|
42
|
Wibberley A, McCafferty GP, Evans C, Edwards RM, Hieble JP. Dual, but not selective, COX-1 and COX-2 inhibitors, attenuate acetic acid-evoked bladder irritation in the anaesthetised female cat. Br J Pharmacol 2006; 148:154-61. [PMID: 16547526 PMCID: PMC1617054 DOI: 10.1038/sj.bjp.0706715] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Non-selective cyclooxygenase (COX) inhibitors exert effects on lower urinary tract function in several species. The exact contributions of COX-1 and COX-2 isozymes have not been studied much. The present studies investigated the effects of non- and selective COX inhibitors on bladder irritation in the cat.Chloralose-anaesthetised female cats were catheterised through the bladder dome for cystometric evaluation of bladder responses to intravesical infusion of saline or acetic acid. Bladder capacity, voiding efficiency, threshold pressure, and reflex-evoked bladder contraction amplitude and duration were measured. The cat COX selectivity of the doses of inhibitors examined was determined using an in vitro whole-blood assay and analysis of plasma levels. Pretreatment with indomethacin or ketoprofen (non-selective COX inhibitors; 0.3 mg kg(-1) i.v.) inhibited acetic acid-evoked irritation (characterised by a decrease in bladder capacity in vehicle pretreated animals). FR-122047 (selective COX-1 inhibitor), NS-398 and nimesulide (selective COX-2 inhibitors; 1 and 3 mg kg(-1) i.v.) had no effects on bladder irritation. Analysis of plasma levels of the doses examined and determination of COX-1 and COX-2 inhibition in cat whole blood confirmed the reported selectivity of these compounds in this species. The present studies suggest that dual COX inhibition is required to attenuate acetic acid-evoked bladder irritation in the cat.
Collapse
Affiliation(s)
- Alexandra Wibberley
- Urogenital Biology, Cardiovascular and Urogenital Center of Excellence for Drug Discovery, GlaxoSmithKline Pharmaceuticals, 709 Swedeland Road, PO Box 1539, King of Prussia, PA 19406-0939, U.S.A
| | - Gerald P McCafferty
- Urogenital Biology, Cardiovascular and Urogenital Center of Excellence for Drug Discovery, GlaxoSmithKline Pharmaceuticals, 709 Swedeland Road, PO Box 1539, King of Prussia, PA 19406-0939, U.S.A
| | - Christopher Evans
- Drug Metabolism and Pharmacokinetics, Cardiovascular and Urogenital Center of Excellence for Drug Discovery, GlaxoSmithKline Pharmaceuticals, 709 Swedeland Road, PO Box 1539, King of Prussia, PA 19406-0939, U.S.A
| | - Richard M Edwards
- Urogenital Biology, Cardiovascular and Urogenital Center of Excellence for Drug Discovery, GlaxoSmithKline Pharmaceuticals, 709 Swedeland Road, PO Box 1539, King of Prussia, PA 19406-0939, U.S.A
| | - J Paul Hieble
- Urogenital Biology, Cardiovascular and Urogenital Center of Excellence for Drug Discovery, GlaxoSmithKline Pharmaceuticals, 709 Swedeland Road, PO Box 1539, King of Prussia, PA 19406-0939, U.S.A
- Author for correspondence: J.
| |
Collapse
|
43
|
Lee WC, Li YC, Chu IM. Amphiphilic Poly(D,L-lactic acid)/Poly(ethylene glycol)/Poly(D,L-lactic acid) Nanogels for Controlled Release of Hydrophobic Drugs. Macromol Biosci 2006; 6:846-54. [PMID: 17039577 DOI: 10.1002/mabi.200600101] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Photocrosslinked nanogels with a hydrophobic core and hydrophilic shell are successfully fabricated with the goal of obtaining a biocompatible and biodegradable drug carrier for hydrophobic anticancer drugs. These nanogels are composed of amphiphilic triblock copolymers, poly(D,L-lactic acid)/poly(ethylene glycol)/poly(D,L-lactic acid) (PLA-PEG-PLA), with acrylated groups at the end of the PLA segments. The copolymers are synthesized by ring-opening polymerization and possess a low CMC (49.6 mg x L(-1)), which easily helps to form micelles by self-assembly. The acrylated end groups allow the micelles to be photocrosslinked by ultraviolet irradiation, which turn the micelles into nanogels. These nanogels exhibit excellent stability as a suspension in aqueous media at ambient temperature as compared to the micelles. Moreover, the size of the nanogels is easily manipulated in a range of 150 to 250 nm by changing the concentration of crosslinkers, e.g., ethylene glycol dimethacrylate, and ultraviolet light irradiation time. The nanogels achieve a high encapsulation efficiency and offer a steady and long-term release mechanism for the hydrophobic anticancer drug, CPT. It shows that these nanogels are useful for a hydrophobic anticancer drug-carrier system. [pictures: see text] Formation of the PLA-PEG-PLA nanogels.
Collapse
Affiliation(s)
- Wen-Chuan Lee
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2 Kuang Fu Road, Hsinchu 300, Taiwan
| | | | | |
Collapse
|
44
|
Jang JS, Kim SY, Lee SB, Kim KO, Han JS, Lee YM. Poly(ethylene glycol)/poly(ε-caprolactone) diblock copolymeric nanoparticles for non-viral gene delivery: The role of charge group and molecular weight in particle formation, cytotoxicity and transfection. J Control Release 2006; 113:173-82. [PMID: 16750279 DOI: 10.1016/j.jconrel.2006.03.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2005] [Revised: 03/13/2006] [Accepted: 03/31/2006] [Indexed: 10/24/2022]
Abstract
Two types of nanoparticles containing pGL3-Control (plasmid DNA) were prepared using nonionic amphiphlic block copolymers and ionic amphiphilic block copolymers containing a terminal cationic group to investigate the effect of charge on the vehicle properties for systemic gene delivery. Methoxy poly(ethylene glycol) (MPEG)/poly(epsilon-caprolactone) (PCL) diblock copolymers were synthesized by the ring-opening polymerizatrion of epsilon-caprolactone in the presence of a catalyst-free MPEG homopolymer. The hydroxy groups of MPEG/PCL block copolymer were then modified into an amine group to synthesize an amine-terminated MPEG/PCL diblock copolymer (AMPEG/PCL). DNA was incorporated into the polymeric nanoparticles by physical entrapment and electrostatic interaction. All nanoparticle samples exhibited spherical structures and although their sizes increased slightly after DNA-loading, they remained less than 160 nm. The AMPEG/PCL nanoparticles exhibited smaller particle sizes than the MPEG/PCL nanoparticles of the same molecular weight after DNA-loading. The optimum mixing ratio of MPEG/PCL and AMPEG/PCL copolymers to DNA ranged from 4:1 to 1:2 depending on the molecular weight of the block copolymer, the composition of MPEG and PCL and terminal amine group. Based on in vitro cytotoxicity tests, the DNA-loaded MPEG/PCL and AMPEG/PCL nanoparticles did not induce any remarkable cytotoxicity against normal human fibroblasts. Transfection efficiencies of DNA-loaded nanoparticles were improved about 3.4 - 12.9 times under serum conditions.
Collapse
Affiliation(s)
- Jeong Soon Jang
- School of Chemical Engineering, College of Engineering, Hanyang University, Seoul 133-791, Korea
| | | | | | | | | | | |
Collapse
|
45
|
Shim WS, Kim SW, Choi EK, Park HJ, Kim JS, Lee DS. Novel pH Sensitive Block Copolymer Micelles for Solvent Free Drug Loading. Macromol Biosci 2006; 6:179-86. [PMID: 16456877 DOI: 10.1002/mabi.200500182] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Novel pH sensitive biodegradable block copolymers (MPEG-PDLLA-OSM) composed of mono-methoxy poly(ethylene glycol) (MPEG), poly (D,L-lactide) (PDLLA) and sulfamethazine oligomer (OSM) were synthesized via ring-opening polymerization and a dicyclohexyl carboimide (DCC) coupling reaction. These copolymers had a relatively low critical micelle concentration (CMC) due to the strong hydrophobic properties of non-ionized OSM at pH 7.0. Also, the pH sensitive block copolymers showed the micelle-unimer transition due to the ionization-non-ionization of OSM in the pH range (pH 7.2-8.4) above the CMC. Due to the pH sensitive properties of the block copolymer, the hydrophobic drug paclitaxel (PTX) was incorporated into a pH sensitive block copolymer micelle by the pH induced micellization method, without using an organic solvent. The block copolymer micelle prepared by pH induced micellization showed a relatively high PTX loading efficiency, and good stability for 2 d at 37 degrees C. Furthermore, the PTX loaded micelle showed a sustained release of PTX with a small burst in vitro over 2 d. The present results suggest that the pH induced micellization method due to the micelle-unimer transition of the pH sensitive block copolymer would be a novel and valuable drug incorporation tool for hydrophobic and protein drugs, since no organic solvent is involved in the formulation.
Collapse
Affiliation(s)
- Woo Sun Shim
- Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon 440-746, Korea
| | | | | | | | | | | |
Collapse
|
46
|
Aliabadi HM, Brocks DR, Lavasanifar A. Polymeric micelles for the solubilization and delivery of cyclosporine A: pharmacokinetics and biodistribution. Biomaterials 2005; 26:7251-9. [PMID: 16005061 DOI: 10.1016/j.biomaterials.2005.05.042] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The aim of this study was to assess the potential of polymeric micelles to modify the pharmacokinetics and tissue distribution of cyclosporine A (CsA). Drug-loaded methoxy poly(ethylene oxide)-b-poly(epsilon-caprolactone) (PEO-b-PCL) micellar solutions in isotonic medium were prepared and administered intravenously to healthy Sprague-Dawley rats. Blood and tissues were harvested and assayed for CsA, and resultant pharmacokinetic parameters and tissue distribution of CsA in its polymeric micellar formulation were compared to its commercially available intravenous formulation (Sandimmune). In the pharmacokinetic assessment, a 6.1 fold increase in the area under the blood concentration versus time curve (AUC) was observed for CsA when given as polymeric micellar formulation as compared to Sandimmune. The volume of distribution and clearance of CsA as PEO-b-PCL formulation were observed to be 10.0 and 7.6 fold lower, respectively, compared to the commercial formulation. No significant differences in t(1/2) or MRT could be detected. In the biodistribution study, analysis of tissue samples indicated that the mean AUC of CsA in polymeric micelles was lower in liver, spleen and kidney (1.5, 2.1 and 1.4-fold, respectively). Similar to the pharmacokinetic study in these rats, the polymeric micellar formulation gave rise to 5.7 and 4.9-fold increase in the AUC of CsA in blood and plasma, respectively. Our results show that PEO-b-PCL micelles can effectively solubilize CsA, at the same time confining CsA to the blood circulation and restricting its access to tissues such as kidney, perhaps limiting the onset of toxicity.
Collapse
|
47
|
Yu Z, Liu L. Microwave-assisted synthesis of poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(epsilon-caprolactone) tri-block co-polymers and use as matrices for sustained delivery of ibuprofen taken as model drug. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2005; 16:957-71. [PMID: 16128231 DOI: 10.1163/1568562054414667] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(epsilon-caprolactone) triblock co-polymers with number-average molar mass (Mn) over 20000 g/mol were prepared by ring-opening polymerization of epsilon-caprolactone initiated by poly(ethylene glycol) under microwave irradiation. This method was proposed as a means to improve in vivo compatibility as no harmful chemicals were involved in the polymerization except epsilon-caprolactone and poly(ethylene glycol). The resulting tri-block co-polymers were characterized by FT-IR, H-NMR, GPC and WAXD. Their Mn and their composition was controlled by the amount and the chain length of the poly(ethylene glycol) macromers involved in the feed. The ability of poly(epsilon-caprolactone)-poly(ethylene glycol)-poly(epsilon-caprolactone) co-polymers to entrap and deliver drugs was investigated with ibuprofen as a model drug. The release of ibuprofen was significantly influenced by the co-polymer composition and the extent of loading. The in vitro release of ibuprofen was sustained from 3 to 15 days for 10% loading, depending on the ratio of epsilon-caprolactone to ethylene glycol-derived subunits in co-polymer chains. This ratio ranged from 0.97 to 9.78. In the case of the co-polymer whose epsilon-caprolactone molar ratio to ethylene glycol-derived subunits was 2.49, the ibuprofen release was sustained for 2 to 24 days for ibuprofen loads going from 5 to 20 wt%.
Collapse
Affiliation(s)
- Zhaoju Yu
- Department of Polymer Science, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P R. China
| | | |
Collapse
|
48
|
Park EK, Kim SY, Lee SB, Lee YM. Folate-conjugated methoxy poly(ethylene glycol)/poly(ɛ-caprolactone) amphiphilic block copolymeric micelles for tumor-targeted drug delivery. J Control Release 2005; 109:158-68. [PMID: 16263189 DOI: 10.1016/j.jconrel.2005.09.039] [Citation(s) in RCA: 203] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2005] [Accepted: 08/15/2005] [Indexed: 11/25/2022]
Abstract
Amphiphilic block copolymers composed of methoxy poly(ethylene glycol) (MPEG) and poly(epsilon-caprolactone) (PCL) were synthesized and then conjugated with folic acid to produce a folate-receptor-targeted drug carrier for tumor-specific drug delivery. Folate-conjugated MPEG/PCL micelles containing the anticancer drug paclitaxel were prepared by micelle formation in aqueous medium. The size of the folate-conjugated MPEG/PCL micelles formed was about 50-130 nm, depending on the molecular weight of block copolymers, and was maintained at less than 150 nm even after loading with paclitaxel. The in vitro release profile of the paclitaxel from the MPEG/PCL micelles exhibited no initial burst release and showed sustained release. Paclitaxel-loaded folate-conjugated MPEG/PCL micelles (PFOL50) exhibited much higher cytotoxicity for cancer cells, such as MCF-7 and HeLa cells, than MPEG/PCL micelles without the folate group (PMEP50). Confocal image analysis revealed that fluorescent paclitaxel-loaded PFOL50 micelles were endocytosed into MCF-7 cells through the interaction with overexpressed folate receptors on the surface of the cancer cells.
Collapse
Affiliation(s)
- Eun Kyoung Park
- School of Chemical Engineering, College of Engineering, Hanyang University, Seoul, South Korea
| | | | | | | |
Collapse
|
49
|
Kim MS, Seo KS, Khang G, Lee HB. Ring-Opening Polymerization of?-Caprolactone by Poly(ethylene glycol) by an Activated Monomer Mechanism. Macromol Rapid Commun 2005. [DOI: 10.1002/marc.200400650] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
50
|
Park EK, Lee SB, Lee YM. Preparation and characterization of methoxy poly(ethylene glycol)/poly(ε-caprolactone) amphiphilic block copolymeric nanospheres for tumor-specific folate-mediated targeting of anticancer drugs. Biomaterials 2005; 26:1053-61. [PMID: 15369694 DOI: 10.1016/j.biomaterials.2004.04.008] [Citation(s) in RCA: 194] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2003] [Accepted: 04/01/2004] [Indexed: 10/26/2022]
Abstract
Biodegradable methoxy poly(ethylene glycol)/poly(-caprolactone) (MPEG/PCL) amphiphilic block copolymer nanospheres coupled to folic acid have been designed to target a folate-binding protein that is overexpressed on the surface of many tumoral cells. For this purpose, hydroxy groups terminated on the MPEG/PCL copolymer were converted into primary amino groups, which were used to conjugate with the carboxylic group of folic acid. Nanospheres were prepared by the formation of micelles of the copolymer with or without the anticancer agent paclitaxel. Folate-mediated MPEG/PCL nanospheres were compared with hydroxyl- and amino-terminated nanospheres in terms of their size, surface characteristics, and drug-loading efficiency. Regardless of the type of terminal group, the MPEG/PCL nanospheres showed a narrow size distribution with an average diameter <80 nm without paclitaxel, and an average diameter of 115 nm when loaded with the drug. The results from zeta potential and X-ray photoelectron spectroscopy measurements revealed that the folate molecules were partially exposed, and were expressed on the surface of the nanospheres allowing folate receptor recognition. In in vitro, cytotoxicity tests, the nanospheres loaded with paclitaxel showed a higher cell viability than in cases where paclitaxel was absent. Thus, folate-mediated nanospheres composed of MPEG and PCL are potentially new drug carriers for tumor cell-selective targeting treatments.
Collapse
Affiliation(s)
- Eun Kyoung Park
- College of Engineering, School of Chemical Engineering, Hanyang University, Haengdang-dong, Seungdong-ku, Seoul 133-791, South Korea
| | | | | |
Collapse
|