1
|
Wilson JA, Ates Z, Pflughaupt RL, Dove AP, Heise A. Polymers from macrolactones: From pheromones to functional materials. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.02.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
2
|
Wersig T, Hacker M, Kressler J, Mäder K. Poly(glycerol adipate) – indomethacin drug conjugates – synthesis and in vitro characterization. Int J Pharm 2017; 531:225-234. [DOI: 10.1016/j.ijpharm.2017.08.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/18/2017] [Accepted: 08/20/2017] [Indexed: 01/28/2023]
|
3
|
Luo SH, Wu YC, Cao L, Wang QF, Chen SX, Hao ZF, Jing L, Wang ZY. One-pot preparation of polylactic acid-ibuprofen conjugates and their performance characterization. Polym Chem 2017. [DOI: 10.1039/c7py01213f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Merging esterification modification, carrier preparation, and chemical conjugation into a one-pot reaction as a new strategy for developing the polylactic acid-ibuprofen conjugates is described.
Collapse
Affiliation(s)
- Shi-He Luo
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Yan-Cheng Wu
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Liang Cao
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Qun-Fang Wang
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Shui-Xia Chen
- PCFM Lab
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- P. R. China
| | - Zhi-Feng Hao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- P. R. China
| | - Le Jing
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| | - Zhao-Yang Wang
- School of Chemistry and Environment
- South China Normal University
- Key Laboratory of Theoretical Chemistry of Environment
- Ministry of Education
- Guangzhou 510006
| |
Collapse
|
4
|
Byeon JH. Multifunctional metal-polymer nanoagglomerates from single-pass aerosol self-assembly. Sci Rep 2016; 6:31329. [PMID: 27507668 PMCID: PMC4979091 DOI: 10.1038/srep31329] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 07/18/2016] [Indexed: 12/24/2022] Open
Abstract
In this study, gold (Au)-iron (Fe) nanoagglomerates were capped by a polymer mixture (PM) consisting of poly(lactide-co-glycolic acid), protamine sulfate, and poly-l-lysine via floating self-assembly in a single-pass aerosol configuration as multibiofunctional nanoplatforms. The Au-Fe nanoagglomerates were directly injected into PM droplets (PM dissolved in dichloromethane) in a collison atomizer and subsequently heat-treated to liberate the solvent from the droplets, resulting in the formation of PM-capped Au-Fe nanoagglomerates. Measured in vitro, the cytotoxicities of the nanoagglomerates (>98.5% cell viability) showed no significant differences compared with PM particles alone (>98.8%), thus implying that the nanoagglomerates are suitable for further testing of biofunctionalities. Measurements of gene delivery performance revealed that the incorporation of the Au-Fe nanoagglomerates enhanced the gene delivery performance (3.2 × 106 RLU mg−1) of the PM particles alone (2.1 × 106 RLU mg−1), which may have been caused by the PM structural change from a spherical to a hairy structure (i.e., the change followed the agglomerated backbone). Combining the X-ray-absorbing ability of Au and the magnetic property of Fe led to magnetic resonance (MR)-computed tomography (CT) contrast ability in a phantom; and the signal intensities [which reached 64 s−1T2-relaxation in MR and 194 Hounsfield units (HUs) in CT at 6.0 mg mL−1] depended on particle concentration (0.5–6.0 mg mL−1).
Collapse
Affiliation(s)
- Jeong Hoon Byeon
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| |
Collapse
|
5
|
Photo-derived transformation from modified chitosan@calcium carbonate nanohybrids to nanosponges. Sci Rep 2016; 6:28782. [PMID: 27338869 PMCID: PMC4919630 DOI: 10.1038/srep28782] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 06/13/2016] [Indexed: 12/22/2022] Open
Abstract
Zwitterionic chitosan (ZC)@calcium carbonate (CC) nanoparticles were conveniently obtained and transformed to biocompatible nanosponges by continuous gas-phase photo-derived transformation in a single-pass configuration, and their potential use for biomedical applications was investigated. The mean diameter of the ZC@CC sponges was ~166 nm (~72 nm for CC and, ~171 nm for ZC), and the sponges had a mesoporous structure (i.e., an average pore diameter of ~13 nm). Measurements of the sponge cytotoxicity were performed and only a slight decrease was observed (>78% in cell viability) when compared with pure ZC (>80%). The ZC@CC sponges had a similar transfection ability to lipofectamine (~2.7 × 109 RLU mg−1 protein) at a 50:1 ratio of sponge:DNA weight. Because of a porous structure, the sponges showed remarkably higher transfection efficiencies than pure ZC.
Collapse
|
6
|
Azouz L, Dahmoune F, Rezgui F, G'Sell C. Full factorial design optimization of anti-inflammatory drug release by PCL-PEG-PCL microspheres. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:412-9. [PMID: 26478328 DOI: 10.1016/j.msec.2015.08.058] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 08/25/2015] [Accepted: 08/27/2015] [Indexed: 10/23/2022]
Abstract
A biodegradable triblock poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) copolymer was successfully synthesized by ring-opening polymerization of ε-caprolactone, and was characterized by intrinsic viscosimetry, (1)H nuclear magnetic resonance, infrared spectroscopy and X-ray diffraction. Copolymer microparticles loaded with ibuprofen were prepared by an oil-in-water (o/w) emulsion solvent evaporation process. They were carefully weighted and characterized through their zeta potential. In this work, 4 selected process parameters (shaking speed X1, time of contact X2, poly(vinyl alcohol) concentration X3, and ibuprofen concentration X4) were adjusted at 2 different values. For each of the 16 experimental conditions, repeated twice, the drug encapsulation efficiency of the microspheres was determined, according to the following definition: EE (X1, X2, X3, X4)=mass of encapsulated ibuprofen/total weight of ibuprofen. A "full factorial design method" was applied to analyze the results statistically according to a polynomial fit and to determine the optimal conditions for the microencapsulation of the ibuprofen through an accurate statistical protocol. The microparticles obtained exhibit a spherical shape as shown by electron microscopy.
Collapse
Affiliation(s)
- L'Hachemi Azouz
- Laboratoire des Matériaux Organiques (LMO), Faculté des Sciences Exactes, Département de Chimie, Université de Bejaia, 06000 Bejaia Algérie.
| | - Farid Dahmoune
- Laboratoire de Biomathématiques, Biophysique, Biochimie et Scientométrie (L3BS-Bejaia), Faculté des Sciences de la Nature et de la Vie et des Sciences de la Terre, Université de Bouira 10000 Bouira, Algérie.
| | - Farouk Rezgui
- Laboratoire des Matériaux Organiques (LMO), Faculté de Technologie, Département de Génie des Procédés, Université de Bejaia, 06000 Bejaia, Algérie.
| | - Christian G'Sell
- Université de Lorraine (France), Pôle scientifique M4, Institut Jean Lamour (UMR CNRS-UL 7198), Département SI2M, 54000 Nancy, France.
| |
Collapse
|
7
|
Byeon JH, Kulkarni A, Kim HK, Thompson DH, Roberts JT. Photoassisted One-Step Aerosol Fabrication of Zwitterionic Chitosan Nanoparticles. Biomacromolecules 2014; 15:2320-5. [PMID: 24833549 DOI: 10.1021/bm5005417] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeong Hoon Byeon
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Aditya Kulkarni
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Hee-Kwon Kim
- Department of Nuclear Medicine, Molecular Imaging & Therapeutic Medicine Research Center, Biomedical Research Institute, Chonbuk National University Medical School and Hospital, Jeonju 561-712, Republic of Korea
| | - David H. Thompson
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Jeffrey T. Roberts
- Department
of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| |
Collapse
|
8
|
Byeon JH, Kim HK, Thompson DH, Roberts JT. Aerosol-based fabrication of modified chitosans and their application for gene transfection. ACS APPLIED MATERIALS & INTERFACES 2014; 6:4597-4602. [PMID: 24628606 DOI: 10.1021/am501069u] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Modified chitosan nanoparticles were conveniently obtained by a one-step aerosol method, and their potential for gene transfection was investigated. Droplets containing modified chitosans were formed by collison atomization, dried to form solid particles, and collected and studied for potential use as nanocarriers. Modified chitosans consisted of a chitosan backbone and an additional component [covalently attached cholesterol; or blends with poly(l-lysine) (PLL), polyethyleneimine (PEI), or poly(ethylene glycol) (PEG)]. Agarose gel retardation assays confirmed that modified chitosans could associate with plasmid DNA. Even though the average cell viability of cholesterol-chitosan (Ch-Cs) showed a slightly higher cytotoxicity (∼90% viability) than that for unmodified chitosan (Cs, ∼95%), transfection (>7.5 × 10(5) in relative light units (RLU) mg(-1)) was more effective than it was for Cs (∼7.6 × 10(4) RLU mg(-1)). The blending of PEI with Cs (i.e., a Cs/PEI) to produce transfection complexes enhanced the transfection efficiency (∼1.3 × 10(6) RLU mg(-1)) more than did the addition of PLL (i.e., a Cs/PLL, ∼9.3 × 10(5) RLU mg(-1)); however, it also resulted in higher cytotoxicity (∼86% viability for Cs/PEI vs ∼94% for Cs/PLL). The average cell viability (∼92%) and transfection efficiency (∼1.9 × 10(6) RLU mg(-1)) were complemented further by addition of PEG in Cs/PEI complexes (i.e., a Cs/PEI-PEG). This work concludes that gene transfection of Cs can be significantly enhanced by adding cationic polymers during aerosol fabrication without wet chemical modification processes of Cs.
Collapse
Affiliation(s)
- Jeong Hoon Byeon
- Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States
| | | | | | | |
Collapse
|
9
|
Bédouet L, Moine L, Pascale F, Nguyen VN, Labarre D, Laurent A. Synthesis of hydrophilic intra-articular microspheres conjugated to ibuprofen and evaluation of anti-inflammatory activity on articular explants. Int J Pharm 2014; 459:51-61. [DOI: 10.1016/j.ijpharm.2013.11.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 11/01/2013] [Indexed: 01/04/2023]
|
10
|
Rosario-Meléndez R, Yu W, Uhrich KE. Biodegradable polyesters containing ibuprofen and naproxen as pendant groups. Biomacromolecules 2013; 14:3542-8. [PMID: 23957612 PMCID: PMC3812688 DOI: 10.1021/bm400889a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Controlled release of nonsteroidal anti-inflammatory drugs such as ibuprofen and naproxen could be beneficial for the treatment of inflammatory diseases while reducing the side effects resulting from their continuous use. Novel biodegradable polyesters solely comprised of biocompatible components (e.g., tartaric acid, 1,8-octanediol, and ibuprofen or naproxen as pendant groups) have been synthesized using tin(II) 2-ethylhexanoate as catalyst at 130 °C and subsequently characterized to determine their structures and physicochemical properties. The polymers release the free drug (ibuprofen or naproxen) in vitro in a controlled manner without burst release, unlike the release rates achieved when the drugs are encapsulated in other polymers. These new biomaterials are not cytotoxic toward mouse fibroblasts up to 0.10 mg/mL. The drugs retain their chemical structure following hydrolytic degradation of the polymer, suggesting that bioactivity is preserved.
Collapse
Affiliation(s)
- Roselin Rosario-Meléndez
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854
| | - Weiling Yu
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854
| | - Kathryn E. Uhrich
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854
- Department of Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854
| |
Collapse
|
11
|
Gupta SS, Ghosh S, Maiti P, Ghosh M. Microencapsulation of conjugated linolenic acid–rich pomegranate seed oil by an emulsion method. FOOD SCI TECHNOL INT 2012; 18:549-58. [DOI: 10.1177/1082013211433078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Controlled release of food ingredients and their protection from oxidation are the key functionality provided by microencapsulation. In the present study, pomegranate seed oil, rich in conjugated linolenic acid, was microencapsulated. As encapsulating agent, sodium alginate or trehalose was used. Calcium caseinate was used as the emulsifier. Performances of the two encapsulants were compared in respect of the rate of release of core material from the microcapsules and stability of microcapsules against harsh conditions. Microencapsulation was carried out by preparation of an emulsion containing calcium caseinate as the emulsion stabilizer and a water-soluble carbohydrate (either sodium alginate or trehalose) as the encapsulant. An oil-in-water emulsion was prepared with pomegranate seed oil as the inner core material. The emulsion was thereby freeze-dried and the dried product pulverized. External morphology of the microcapsules was studied under scanning electron microscope. Micrographs showed that both types of microcapsules had uneven surface morphology. Release rate of the microcapsules was studied using UV-spectrophotometer. Trehalose-based microcapsules showed higher release rate. On subjecting the microcapsules at 110 °C for specific time periods, it was observed that sodium alginate microcapsules retained their original properties. Hence, we can say that sodium alginate microcapsules are more heat resistant than trehalose microcapsules.
Collapse
Affiliation(s)
| | - Santinath Ghosh
- Department of Chemical Technology, University of Calcutta, Kolkata, India
| | - Prabir Maiti
- Department of Chemical Technology, University of Calcutta, Kolkata, India
| | - Mahua Ghosh
- Department of Chemical Technology, University of Calcutta, Kolkata, India
| |
Collapse
|
12
|
Byeon JH, Kim HK, Roberts JT. Monodisperse Poly(lactide-co
-glycolic acid)-Based Nanocarriers for Gene Transfection. Macromol Rapid Commun 2012; 33:1840-4. [DOI: 10.1002/marc.201200369] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 06/26/2012] [Indexed: 01/09/2023]
|
13
|
Kang HC, Huh KM, Bae YH. Polymeric nucleic acid carriers: current issues and novel design approaches. J Control Release 2012; 164:256-64. [PMID: 22771981 DOI: 10.1016/j.jconrel.2012.06.036] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 06/25/2012] [Accepted: 06/27/2012] [Indexed: 11/26/2022]
Abstract
To deliver nucleic acids including plasmid DNA (pDNA) and short interfering RNA (siRNA), polymeric gene carriers equipped with various functionalities have been extensively investigated. The functionalities of these polymeric vectors have been designed to overcome various extracellular and intracellular hurdles that nucleic acids and their carriers encounter during their journey from injection site to intracellular target site. This review briefly introduces known extracellular and intracellular issues of nucleic acid delivery and their solution strategies. We examine significant yet overlooked factors affecting nucleic acid delivery (e.g., microenvironmental pH, polymer/siRNA complexation, and pharmaceutical formulation) and highlight our reported approaches to solve these problems.
Collapse
Affiliation(s)
- Han Chang Kang
- Department of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, College of Pharmacy, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743, Republic of Korea
| | | | | |
Collapse
|
14
|
Mishra D, Kang HC, Bae YH. Reconstitutable charged polymeric (PLGA)(2)-b-PEI micelles for gene therapeutics delivery. Biomaterials 2011; 32:3845-54. [PMID: 21354616 DOI: 10.1016/j.biomaterials.2011.01.077] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 01/31/2011] [Indexed: 11/18/2022]
Abstract
This study investigated the potential of creating a charged polymeric micelle-based nucleic acid delivery system that could easily be reconstituted by the addition of water. (PLGA(36kDa))(2)-b-bPEI(25kDa) (PLGA MW 36 kDa, bPEI M(w) 25 kDa, PLGA:bPEI block ratio = 2) was synthesized and used to prepare cationic micelles. The copolymer retained proton-buffering capability from the bPEI block within the endosomal pH range. Micelle/pDNA complexes retained their particle size (100-150 nm) and surface charge (30-40 mV) following reconstitution. It was found that adding a small amount of low molecular weight bPEI (1.8 kDa) completely shielded pDNA in the micelle/pDNA complexes and enhanced transfection efficiency 50-100 fold for both fresh and reconstituted complexes without affecting complex size. Transfection efficiency for "reconstituted" micelle/pDNA/bPEI(1.8kDa) (WR 1) complexes was 16-fold higher than its "fresh" counterpart. Although transfection levels achieved using "reconstituted" micelle/pDNA/bPEI(1.8kDa) complexes were 3.6-fold lower than control "fresh" bPEI(25kDa)/pDNA (N/P 5) complexes, transfection levels were 39-fold higher than "reconstituted" bPEI(25kDa)/pDNA (N/P 5) complexes. The micelle/pDNA/bPEI(1.8kDa) system showed very low cytotoxicity in MCF7 cells even with pDNA doses up to 20 μg, and transfection levels increased linearly with increasing pDNA dose. These results indicate that this PLGA-b-bPEI polymeric micelle-based system is well suited as a reconstitutable gene delivery system, and has high potential for use as a delivery system for gene therapy applications.
Collapse
Affiliation(s)
- Deepa Mishra
- Department of Bioengineering, The University of Utah, 20 S. 2030 E., Rm. 108, Salt Lake City, UT 84112, USA
| | | | | |
Collapse
|
15
|
Bowey K, Neufeld RJ. Systemic and mucosal delivery of drugs within polymeric microparticles produced by spray drying. BioDrugs 2011; 24:359-77. [PMID: 21043544 DOI: 10.2165/11539070-000000000-00000] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Encapsulation of therapeutic and diagnostic materials into polymeric particles is a means to protect and control or target the release of active substances such as drugs, vaccines, and genetic material. In terms of mucosal delivery, polymeric encapsulation can be used to promote absorption of the active substance, while particles can improve the half-life of drugs administered systemically. Spray drying is an attractive technology used to produce such microparticles, because it combines both the encapsulation and drying steps in a rapid, single-step operation. Even so, spray drying is not classically associated with processes used for drug and therapeutic material encapsulation, since elevated temperatures could potentially denature the active substance. However, a comprehensive review of the literature revealed a number of studies demonstrating that spray drying can be used to produce microparticulate formulations with labile therapeutics. Polymers commonly employed include synthetics such as methacrylic copolymers and polyesters, and natural materials including chitosan and alginate. Drugs and active substances are diverse and included antibiotics, anti-inflammatory agents, and chemotherapeutics. Regarding the delivery of spray-dried particles, the pulmonary, oral, colonic, and nasal mucosal routes are often investigated because they offer a convenient means of administration, which promotes physician and patient compliance. In addition, spray drying has been widely used to produce polymeric microparticles for systemic delivery in order to control the delivery of drugs, vaccines, or genetic material that may exhibit poor pharmacokinetic profiles or pose toxicity concerns. This review presents a brief introduction to the technology of spray drying and outlines the delivery routes and the applications of spray-dried polymeric microparticles.
Collapse
Affiliation(s)
- Kristen Bowey
- Department of Chemical Engineering, Queen's University, Kingston, Ontario, Canada
| | | |
Collapse
|