1
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Affiliation(s)
- Hailong Fan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University,
N21W10, Kita-ku, Sapporo 001-0021, Japan
| | - Jian Ping Gong
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University,
N21W10, Kita-ku, Sapporo 001-0021, Japan
- Faculty of Advanced Life Science, Hokkaido University, N21W11, Kita-ku, Sapporo 001-0021, Japan
- Global Station for Soft Matter GI-CoRE, Hokkaido University, N21W11, Kita-ku, Sapporo 001-0021, Japan
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2
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Chauhan S, Singh K, Chauhan MS, Sharma K. Temperature controlled comparative physico-chemical studies of DTAB and 12-2-12 Gemini surfactants in aqueous solutions of fructose, maltose and raffinose. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.129] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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3
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Figueroa-Ochoa EB, Villar-Alvarez EM, Cambón A, Mistry D, Llovo J, Attwood D, Barbosa S, Soltero J, Taboada P. Lenghty reverse poly(butylene oxide)-poly(ethylene oxide)-poly(butylene oxide) polymeric micelles and gels for sustained release of antifungal drugs. Int J Pharm 2016; 510:17-29. [DOI: 10.1016/j.ijpharm.2016.06.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/31/2016] [Accepted: 06/06/2016] [Indexed: 12/21/2022]
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4
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5
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Tri/tetra-block co-polymeric nanocarriers as a potential ocular delivery system of lornoxicam: in-vitro characterization, and in-vivo estimation of corneal permeation. Int J Pharm 2015; 492:28-39. [PMID: 26151106 DOI: 10.1016/j.ijpharm.2015.07.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/25/2015] [Accepted: 07/02/2015] [Indexed: 11/23/2022]
Abstract
Polymeric micelles that can deliver drug to intended sites of the eye have attracted much scientific attention recently. The aim of this study was to evaluate the aqueous-based formulation of drug-loaded polymeric micelles that hold significant promise for ophthalmic drug delivery. This study investigated the synergistic performance of mixed polymeric micelles made of linear and branched poly(ethylene oxide)-poly(propylene oxide) for the more effective encapsulation of lornoxicam (LX) as a hydrophobic model drug. The co-micellization process of 10% binary systems combining different weight ratios of the highly hydrophilic poloxamers; Synperonic(®) PE/P84, and Synperonic(®) PE/F127 and the hydrophobic poloxamine counterpart (Tetronic(®) T701) was investigated by means of photon correlation spectroscopy and cloud point. The drug-loaded micelles were tested for their solubilizing capacity towards LX. Results showed a sharp solubility increase from 0.0318 mg/mL up to more than 2.34 mg/mL, representing about 73-fold increase. Optimized formulation was selected to achieve maximum drug solubilizing power and clarity with lowest possible particle size, and was characterized by (1)HNMR analysis which revealed complete encapsulation of the drug within the micelles. Further investigations by histopathological and confocal laser studies revealed the non-irritant nature and good corneal penetrating power of the proposed nano-formulation.
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6
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Khan A, Siddiq M. Physicochemical Investigation of the Micellar Behavior of a Diblock (PEO)62-b-(PBO)33Copolymer in Water and its Interaction with Ionic Surfactants. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1048460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Villar-Alvarez E, Figueroa-Ochoa E, Barbosa S, Soltero JFA, Taboada P, Mosquera V. Reverse poly(butylene oxide)–poly(ethylene oxide)–poly(butylene oxide) block copolymers with lengthy hydrophilic blocks as efficient single and dual drug-loaded nanocarriers with synergistic toxic effects on cancer cells. RSC Adv 2015. [DOI: 10.1039/c5ra07296d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reverse triblock copolymer micelles with lengthy polyethylene oxide blocks as efficient sustained dual drug-loaded nanocarriers.
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Affiliation(s)
- E. Villar-Alvarez
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- Universidad de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
| | - E. Figueroa-Ochoa
- Laboratorio de Reología
- Departamento de Ingeniería Química
- CUECI, Universidad de Guadalajara
- 44430 Guadalajara
- Mexico
| | - S. Barbosa
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- Universidad de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
| | - J. F. A. Soltero
- Laboratorio de Reología
- Departamento de Ingeniería Química
- CUECI, Universidad de Guadalajara
- 44430 Guadalajara
- Mexico
| | - P. Taboada
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- Universidad de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
| | - V. Mosquera
- Grupo de Física de Coloides y Polímeros
- Departamento de Física de la Materia Condensada
- Universidad de Santiago de Compostela
- 15782-Santiago de Compostela
- Spain
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8
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Effect of end-group modification, hydrophilic/hydrophobic block ratio and temperature on the surface, associative and thermodynamic behaviour of poly(ethylene oxide)-b-poly(butylene oxide) diblock copolymers in aqueous media. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0560-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Cambón A, Figueroa-Ochoa E, Juárez J, Villar-Álvarez E, Pardo A, Barbosa S, Soltero JFA, Taboada P, Mosquera V. Complex Self-Assembly of Reverse Poly(butylene oxide)-Poly(ethylene oxide)-Poly(butylene oxide) Triblock Copolymers with Long Hydrophobic and Extremely Lengthy Hydrophilic Blocks. J Phys Chem B 2014; 118:5258-69. [DOI: 10.1021/jp500426k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Adriana Cambón
- Departamento
de Física de la Materia Condensada, Grupo de Física de Coloides y Polímeros, 15782-Santiago
de Compostela, Spain
| | - Edgar Figueroa-Ochoa
- Laboratorio de
Reología, Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara, Bolv. M. García Barragán 44430, Jalisco, México
| | - Josué Juárez
- Departamento
de Física, Universidad de Sonora, Rosales y Transversal, 83000 Hermosillo, Sonora, México
| | - Eva Villar-Álvarez
- Departamento
de Física de la Materia Condensada, Grupo de Física de Coloides y Polímeros, 15782-Santiago
de Compostela, Spain
| | - Alberto Pardo
- Departamento
de Física de la Materia Condensada, Grupo de Física de Coloides y Polímeros, 15782-Santiago
de Compostela, Spain
| | - Silvia Barbosa
- Departamento
de Física de la Materia Condensada, Grupo de Física de Coloides y Polímeros, 15782-Santiago
de Compostela, Spain
| | - J. F. Armando Soltero
- Laboratorio de
Reología, Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara, Bolv. M. García Barragán 44430, Jalisco, México
| | - Pablo Taboada
- Departamento
de Física de la Materia Condensada, Grupo de Física de Coloides y Polímeros, 15782-Santiago
de Compostela, Spain
| | - Víctor Mosquera
- Departamento
de Física de la Materia Condensada, Grupo de Física de Coloides y Polímeros, 15782-Santiago
de Compostela, Spain
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10
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Cambón A, Brea J, Loza MI, Alvarez-Lorenzo C, Concheiro A, Barbosa S, Taboada P, Mosquera V. Cytocompatibility and P-glycoprotein inhibition of block copolymers: structure-activity relationship. Mol Pharm 2013; 10:3232-41. [PMID: 23763603 DOI: 10.1021/mp4002848] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Amphiphilic polymeric micelles greatly improve the solubilization and sustained release of hydrophobic drugs and provide a protective environment for the cargo molecules in aqueous media, which favors lower drug administration doses, reduces adverse side effects, and increases blood circulation times and passive targeting to specific cells. These capabilities depend, among other variables, on the structure and composition of the polymer chains. Composition and, in particular, block length have been shown to play an important role in the modification of cellular responses such as drug internalization processes or transduction pathways when polymeric unimer/micelles are in close contact with cells. Here we present a detailed study about the role copolymer structure and composition play on cell viability and cellular response of several cell lines. To do that, more than 30 structurally related copolymers with diblock and triblock architectures containing different hydrophobic blocks and poly(ethylene oxide) as the common hydrophilic unit have been analyzed regarding cytocompatibility and potential as "active" cell response modifiers by testing their influence on the P-gp pump efflux mechanism responsible of multidrug resistance in cancerous cells. An empirical threshold for cell viability could be established at a copolymer EO/POeffective value above ca. 1.5 for copolymers with triblock structure, whereas no empirical rule could be observed for diblocks. Moreover, some of the tested copolymers (e.g., BO12EO227BO12 and EO57PO46EO57 that notably increased and C16EO455C16 that decreased the P-gp ATPase activity) were observed to act as efficient inhibitors of the P-gp efflux pump promoting an enhanced doxorubicin (DOXO) accumulation inside multidrug resistant (MDR) NCI-ADR-RES cells.
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Affiliation(s)
- A Cambón
- Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela , 15782-Santiago de Compostela, Spain
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11
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Light scattering and surface tensiometric studies of tip-modified PEO-PBO diblock copolymers in water. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0160-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Poly(styrene oxide)-poly(ethylene oxide) block copolymers: From “classical” chemotherapeutic nanocarriers to active cell-response inducers. J Control Release 2013; 167:68-75. [DOI: 10.1016/j.jconrel.2013.01.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 01/10/2013] [Accepted: 01/14/2013] [Indexed: 01/21/2023]
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13
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Cambón A, Rey-Rico A, Mistry D, Brea J, Loza MI, Attwood D, Barbosa S, Alvarez-Lorenzo C, Concheiro A, Taboada P, Mosquera V. Doxorubicin-loaded micelles of reverse poly(butylene oxide)-poly(ethylene oxide)-poly(butylene oxide) block copolymers as efficient "active" chemotherapeutic agents. Int J Pharm 2013; 445:47-57. [PMID: 23380628 DOI: 10.1016/j.ijpharm.2013.01.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 01/24/2013] [Indexed: 12/31/2022]
Abstract
Five reverse poly(butylene oxide)-poly(ethylene oxide)-poly(butylene oxide) block copolymers, BOnEOmBOn, with BO ranging from 8 to 21 units and EO from 90 to 411 were synthesized and evaluated as efficient chemotherapeutic drug delivery nanocarriers and inhibitors of the P-glycoprotein (P-gp) efflux pump in a multidrug resistant (MDR) cell line. The copolymers were obtained by reverse polymerization of poly(butylene oxide), which avoids transfer reaction and widening of the EO block distribution, commonly found in commercial poly(ethylene oxide)-poly(propylene oxide) block copolymers (poloxamers). BOnEOmBOn copolymers formed spherical micelles of 10-40 nm diameter at lower concentrations (one order of magnitude) than those of equivalent poloxamers. The influence of copolymer block lengths and BO/EO ratios on the solubilization capacity and protective environment for doxorubicin (DOXO) was investigated. Micelles showed drug loading capacity ranging from ca. 0.04% to 1.5%, more than 150 times the aqueous solubility of DOXO, and protected the cargo from hydrolysis for more than a month due to their greater colloidal stability in solution. Drug release profiles at various pHs, and the cytocompatibility and cytotoxicity of the DOXO-loaded micelles were assessed in vitro. DOXO loaded in the polymeric micelles accumulated more slowly inside the cells than free DOXO due to its sustained release. All copolymers were found to be cytocompatible, with viability extents larger than 95%. In addition, the cytotoxicity of DOXO-loaded micelles was higher than that observed for free drug solutions in a MDR ovarian NCI-ADR-RES cell line which overexpressed P-gp. The inhibition of the P-gp efflux pump by some BOnEOmBOn copolymers, similar to that measured for the common P-gp inhibitor verapamil, favored the retention of DOXO inside the cell increasing its cytotoxic activity. Therefore, poly(butylene oxide)-poly(ethylene oxide) block copolymers offer interesting features as cell response modifiers to complement their role as efficient nanocarriers for cancer chemotherapy.
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Affiliation(s)
- A Cambón
- Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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14
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Cambón A, Barbosa S, Rey-Rico A, Figueroa-Ochoa EB, Soltero JF, Yeates SG, Alvarez-Lorenzo C, Concheiro A, Taboada P, Mosquera V. Poly(ethylene oxide)–poly(styrene oxide)–poly(ethylene oxide) copolymers: Micellization, drug solubilization, and gelling features. J Colloid Interface Sci 2012; 387:275-84. [DOI: 10.1016/j.jcis.2012.06.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 06/26/2012] [Accepted: 06/27/2012] [Indexed: 11/27/2022]
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15
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Khan A, Bibi I, Pervaiz S, Mahmood K, Siddiq M, Siddiq M. Surface Tension, Density and Viscosity Studies on the Associative Behaviour of Oxyethylene-Oxybutylene Diblock Copolymers in Water at Different Temperatures. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ijoc.2012.21014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Cambón A, Alatorre-Meda M, Juárez J, Topete A, Mistry D, Attwood D, Barbosa S, Taboada P, Mosquera V. Micellisation of triblock copolymers of ethylene oxide and 1,2-butylene oxide: Effect of B-block length. J Colloid Interface Sci 2011; 361:154-8. [DOI: 10.1016/j.jcis.2011.05.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 05/16/2011] [Accepted: 05/17/2011] [Indexed: 01/04/2023]
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17
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Chiappetta DA, Alvarez-Lorenzo C, Rey-Rico A, Taboada P, Concheiro A, Sosnik A. N-alkylation of poloxamines modulates micellar assembly and encapsulation and release of the antiretroviral efavirenz. Eur J Pharm Biopharm 2010; 76:24-37. [DOI: 10.1016/j.ejpb.2010.05.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Revised: 05/12/2010] [Accepted: 05/16/2010] [Indexed: 11/26/2022]
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18
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Cheng L, Cao D. Effect of tail architecture on self-assembly of amphiphiles for polymeric micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:2749-2756. [PMID: 19437695 DOI: 10.1021/la803839t] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Brownian dynamics simulations were carried out to explore the self-assembly of amphiphilic copolymers composed of a linear hydrophilic head and a hydrophobic tail with different architectures. In order to investigate the effect of architecture of hydrophobic tail on self-assembling behavior, these architectures of linear, branched, starlike, and dendritic tails were selected for comparison, and the branching parameter of the tail was employed to characterize the tail architectures. The critical micelle concentration (cmc), dynamics of aggregation, aggregate distribution, gyration radius distribution, density profiles of micelle, shape anisotropy, and thermal stability were examined for the four typical types of copolymers. The calculated results reveal that the self-assembly of linear tail copolymer has the lowest cmc, and the consequently formed polymeric micelles have narrow dispersion and greater aggregate size, and the micelle is closer to spherical shape. It was found that the cmc is inversely proportional to the branching parameter. Linear tail aggregates in solution to form polymeric micelles with higher physical stability, compared to other architectures of tail. The size of polymeric micelle increases with the increase of the branching parameter of the tail, and it exhibits an exponential relationship with the branching parameter. In addition, the micelles formed from copolymers with a high branching parameter of the tail were found to have higher thermal stability. This work provides useful information on designing self-assembling systems for preparing polymeric micelles applied to drug delivery.
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Affiliation(s)
- Lisheng Cheng
- Division of Molecular and Materials Simulation, Key Laboratory of Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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Juárez J, Taboada P, Valdez MA, Mosquera V. Self-assembly process of different poly(oxystyrene)-poly(oxyethylene) block copolymers: spontaneous formation of vesicular structures and elongated micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:7107-7116. [PMID: 18547091 DOI: 10.1021/la8004568] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In the present work, we investigated the micellization, gelation, and structure of the aggregates of three poly(ethylene oxide)-polystyrene oxide block copolymers (E12S10, E10S10E10, and E137S18E137, where E denotes ethylene oxide and S styrene oxide and the subscripts the block length) in solution. Two of them have similar block lengths but different structures (E12S10 and E10S10E10) and the other has longer blocks (E137S18E137). For the first time, the spontaneous formation of vesicles by a poly(oxystyrene)-poly(oxyethylene) block copolymer is reported. These vesicular structures are present when copolymer E12S10 self-assembles in aqueous solution in coexistence with spherical micelles, as confirmed by the size distribution obtained by dynamic light scattering and pictures obtained by polarized optical microscopy, and transmission and cryo-scanning electron microscopies. Vesicle sizes vary between 60 and 500 nm. On the other hand, for copolymers E10S10E10 and E137S18E137, only one species is found in solution, which is assigned to elongated and spherical micelles, respectively. If we compare the high aggregation number derived by static light scattering for the triblock block copolymer micelles, with the maximum theoretical micellar dimensions compatible with a spherical geometry, we can see that the micellar geometry cannot be spherical but must be elongated. This is corroborated by transmission electron microscopy images. On the other hand, tube inversion was used to define the mobile-immobile (soft-hard gel) phase boundaries. To refine the phase diagram and observe the existence of additional phases, rheological measurements of copolymer E137S18E137 were done. The results are in good agreement with previous values published for other polystyrene oxide-poly(ethylene oxide) block copolymers. In contrast, copolymers E12S10 and E10S10E10 did not gel in the concentration range analyzed. Thus, only certain concentrations of copolymer E10S10E10 were analyzed by rheometry, for which an upturn in the low-frequency range of the stress moduli was observed, denoting an evidence of an emerging slow process, which we assign to the first stages of formation of an elastic network.
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Affiliation(s)
- Josué Juárez
- Departamento de Investigación en Polímeros y Materiales y Departamento de Física, Universidad de Sonora, Sorales Resales y Transversal, 83000 Hermosillo Sonora, Mexico
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