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Boondireke S, Liu C, T. Wongsatayanon B, Léonard M, Durand A. Formulation of monomyristin-loaded polyester nanoparticles with controlled surface properties. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Boondireke S, Léonard M, Durand A, Thanomsub Wongsatayanon B. Encapsulation of monomyristin into polymeric nanoparticles improved its in vitro antiproliferative activity against cervical cancer cells. Colloids Surf B Biointerfaces 2019; 176:9-17. [DOI: 10.1016/j.colsurfb.2018.12.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/09/2018] [Accepted: 12/20/2018] [Indexed: 01/20/2023]
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Desbrières J, López-Gonzalez E, Aguilera-miguel A, Sadtler V, Marchal P, Castel C, Choplin L, Durand A. Dilational rheology of oil/water interfaces covered by amphiphilic polysaccharides derived from dextran. Carbohydr Polym 2017; 177:460-468. [DOI: 10.1016/j.carbpol.2017.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/05/2017] [Accepted: 09/05/2017] [Indexed: 11/30/2022]
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Abstract
The use of nanoparticulate pharmaceutical drug delivery systems (NDDSs) to enhance the in vivo effectiveness of drugs is now well established. The development of multifunctional and stimulus-sensitive NDDSs is an active area of current research. Such NDDSs can have long circulation times, target the site of the disease and enhance the intracellular delivery of a drug. This type of NDDS can also respond to local stimuli that are characteristic of the pathological site by, for example, releasing an entrapped drug or shedding a protective coating, thus facilitating the interaction between drug-loaded nanocarriers and target cells or tissues. In addition, imaging contrast moieties can be attached to these carriers to track their real-time biodistribution and accumulation in target cells or tissues. Here, I highlight recent developments with multifunctional and stimuli-sensitive NDDSs and their therapeutic potential for diseases including cancer, cardiovascular diseases and infectious diseases.
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Endres TK, Beck-Broichsitter M, Samsonova O, Renette T, Kissel TH. Self-assembled biodegradable amphiphilic PEG–PCL–lPEI triblock copolymers at the borderline between micelles and nanoparticles designed for drug and gene delivery. Biomaterials 2011; 32:7721-31. [DOI: 10.1016/j.biomaterials.2011.06.064] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Accepted: 06/26/2011] [Indexed: 01/12/2023]
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Chiewpattanakul P, Covis R, Vanderesse R, Thanomsub B, Marie E, Durand A. Design of polymeric nanoparticles for the encapsulation of monoacylglycerol. Colloid Polym Sci 2010. [DOI: 10.1007/s00396-010-2216-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Nouvel C, Raynaud J, Marie E, Dellacherie E, Six JL, Durand A. Biodegradable nanoparticles made from polylactide-grafted dextran copolymers. J Colloid Interface Sci 2009; 330:337-43. [DOI: 10.1016/j.jcis.2008.10.069] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2008] [Revised: 10/27/2008] [Accepted: 10/28/2008] [Indexed: 11/29/2022]
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Poly(n-butyl cyanoacrylate) nanoparticles via miniemulsion polymerization (1): dextran-based surfactants. Colloids Surf B Biointerfaces 2008; 69:141-6. [PMID: 19147334 DOI: 10.1016/j.colsurfb.2008.12.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Revised: 11/24/2008] [Accepted: 12/03/2008] [Indexed: 11/23/2022]
Abstract
This study aims at synthesizing polysaccharide-coated poly(n-butyl cyanoacrylate) nanoparticles by miniemulsion polymerization. Because of the high reactivity of n-butyl cyanoacrylate, drastic conditions are required in order to emulsify the monomer in water while limiting its anionic polymerization. However, nanoparticles were successfully obtained by miniemulsion polymerization of butyl cyanoacrylate-in-water emulsions stabilized by amphiphilic dextran derivatives. Their physico-chemical properties were thoroughly investigated as a function of amphiphilic dextran structure and concentration. The substitution degree of the amphiphilic dextran used as stabilizer had little influence on the final properties of the obtained nanoparticles. Particle size decreased with the concentration of amphiphilic dextran in the aqueous phase whereas the hydrophilic layer thickness and the amount of adsorbed polysaccharide were nearly constant in the entire range of concentrations studied.
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Durand A. Viscosity of dilute colloidal dispersions involving polysaccharide-based stabilizers. Colloid Polym Sci 2008. [DOI: 10.1007/s00396-008-1923-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Aumelas A, Serrero A, Durand A, Dellacherie E, Leonard M. Nanoparticles of hydrophobically modified dextrans as potential drug carrier systems. Colloids Surf B Biointerfaces 2007; 59:74-80. [PMID: 17560095 DOI: 10.1016/j.colsurfb.2007.04.021] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2007] [Revised: 04/24/2007] [Accepted: 04/24/2007] [Indexed: 10/23/2022]
Abstract
Nanoparticles combining a hydrophobically modified dextran core and a polysaccharide surface coverage were elaborated. Their suitability for applications like drug delivery was evaluated. The selected polysaccharide, dextran, was chemically modified by the covalent attachment of hydrocarbon groups (aliphatic or aromatic) via the formation of ether links. According to the extent of modification, either water-soluble or water-insoluble dextran derivatives were obtained. The latter exhibited solubility in organic solvents like tetrahydrofuran or dichloromethane saturated with water. Water-soluble dextran derivatives were used as polymeric surfactants for the control of nanoparticles surface characteristics. Nanoparticles were prepared either by o/w emulsion or solvent-diffusion methods. The size and surface properties of dextran nanoparticles were correlated to processing conditions. The stability of colloidal suspensions was examined as a function of ionic strength and related to the particle surface characteristics. The redispersability of freeze-dried suspensions without the addition of cryoprotectant was demonstrated. Finally, the degradability of modified dextrans was compared to that of starting dextran, after enzymatic hydrolysis in the presence of dextranase.
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Affiliation(s)
- A Aumelas
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568 CNRS-Nancy University, ENSIC, BP 20451, 54001 Nancy Cedex, France
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Xu T, Zhang N, Nichols HL, Shi D, Wen X. Modification of nanostructured materials for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2007. [DOI: 10.1016/j.msec.2006.05.029] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Preparation of polysaccharide-coated nanoparticles by emulsion polymerization of styrene. Colloid Polym Sci 2007. [DOI: 10.1007/s00396-006-1579-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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From polymeric surfactants to colloidal systems (2): Preparation of colloidal dispersions. Colloids Surf A Physicochem Eng Asp 2006. [DOI: 10.1016/j.colsurfa.2006.02.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Basinska T. Hydrophilic Core-Shell Microspheres: A Suitable Support for Controlled Attachment of Proteins and Biomedical Diagnostics. Macromol Biosci 2005; 5:1145-68. [PMID: 16294370 DOI: 10.1002/mabi.200500138] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Functional hydrophilic microspheres (latex particles) have found various applications in life sciences and in medicine - particularly in latex diagnostic tests. This paper presents a comprehensive review of studies on latex particles with a hydrophilic interfacial layer composed of various hydrophilic polymers with reactive groups at the ends of macromolecules or at each monomeric unit along the chain. Typical examples of these hydrophilic polymers are poly(2-hydroxyethyl methyl methacrylate), poly(acrylic acid), poly(N,N-dimethylacrylamide), polysaccharides, poly(ethylene oxide) and polyglycidol. Hydrophilic microspheres with different morphologies (uniform or core-shell, see Figure) have been synthesized by emulsion and dispersion polymerizations. The chemical structure of polymers which constitute the interfacial layer of microspheres has been investigated using a variety of instrumental techniques (such as XPS, SSIMS and NMR) and analytical methods based on specific chemical reactions suitable for the determination of particular functional groups. Microspheres are exposed to contact with proteins in the majority of medical applications. This paper presents examples of studies on the attachment of these biomacromolecules to microspheres. The relation between the structure of the interfacial layer of microspheres and the ability of these particles for the covalent binding of proteins is discussed. Several examples of diagnostic tests, in which hydrophilic microspheres with adsorbed or covalently immobilized proteins were used as reagents, are presented. The paper also contains a short review of the application of magnetic hydrophilic particles for protein separation. Examples of hydrophilic latex particles used for hemoperfusion or heavy metal ion separation are presented. Hydrophilic microspheres with uniform or core-shell morphologies.
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Affiliation(s)
- Teresa Basinska
- Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, ul. Sienkiewicza 112, 90-363 Lodz, Poland.
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Pichot C. Surface-functionalized latexes for biotechnological applications. Curr Opin Colloid Interface Sci 2004. [DOI: 10.1016/j.cocis.2004.07.001] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Imbert P, Sadtler VM, Dellacherie E. Phenoxy-substituted dextrans as emulsifying agent:. Colloids Surf A Physicochem Eng Asp 2002. [DOI: 10.1016/s0927-7757(02)00257-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sadtler VM, Imbert P, Dellacherie E. Ostwald ripening of oil-in-water emulsions stabilized by phenoxy-substituted dextrans. J Colloid Interface Sci 2002; 254:355-61. [PMID: 12702408 DOI: 10.1006/jcis.2002.8624] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The stability of oil-in-water emulsions prepared using dextran, a natural polysaccharide, hydrophobically substituted with phenoxy groups, was studied. The evolution of the emulsion droplet size was investigated as a function of polymer concentration (Cp=0.2 to 1% w/w in a water phase) and the degree of phenoxy substitution (tau=4.2 to 15.7%). For the highest tau values, emulsions, which presented submicrometer droplets, were stable over more than 4 months at room temperature. The most substituted polymers clearly showed a better efficiency to lower the surface tension at the oil/water interface. DexP did not induce real viscosification of the continuous phase. The linearity of the particle volume variation with time, and the invariability of the volume distribution function, proved that Ostwald ripening was the main destabilization mechanism of the phenoxy dextran emulsions. The nature of the oil dispersed phase drastically affected the behavior of emulsions. While the emulsions prepared with n-dodecane presented a particle growth with time, only few size variations occurred when n-hexadecane was used. Furthermore, small ratios of n-hexadecane in n-dodecane phase reduced the particle growth due to the lower solubility and lower diffusion coefficient in water of n-hexadecane, which acted as a ripening inhibitor.
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Affiliation(s)
- Véronique M Sadtler
- Laboratoire de Chimie Physique Macromoléculaire, UMR CNRS-INPL 7568 Groupe ENSIC, 1 rue Grandville, BP 451, Nancy Cedex, 54001, France.
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Rouzes C, Durand A, Leonard M, Dellacherie E. Surface Activity and Emulsification Properties of Hydrophobically Modified Dextrans. J Colloid Interface Sci 2002; 253:217-23. [PMID: 16290850 DOI: 10.1006/jcis.2002.8357] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2001] [Accepted: 03/15/2002] [Indexed: 11/22/2022]
Abstract
Neutral polymeric surfactants were synthesized by covalent attachment of hydrophobic groups (aromatic rings) onto a polysaccharide backbone (dextran). By changing the conditions of the modification reaction, the number of grafted hydrophobic groups per 100 glucopyranose units (substitution ratio) was varied between 7 and 22. In aqueous solution, these polymers behaved like classical associative polymers as demonstrated by viscometric measurements. The associative behavior was more pronounced when the substitution ratio increased. The surface-active properties of the modified dextrans were evidenced by surface tension (air/water) and interfacial tension (dodecane/water) measurements. In each case the surface or interfacial tension leveled down above a critical polymer concentration, which was attributed to the formation of a dense polymer layer at the liquid-air or liquid-liquid interface. Dodecane-in-water emulsions were prepared using the polymeric surfactants as stabilizers, with oil volume fractions ranging between 5 and 20%. The oil droplet size (measured by dynamic light scattering) was correlated to the amount of polymer in the aqueous phase and to the volume of emulsified oil. The thickness of the adsorbed polymer layer was estimated thanks to zeta potential measurements coupled with size measurements. This thickness increased with the amount of polymer available for adsorption at the interface. The dextran-based surfactants were also applied to emulsion polymerization of styrene and stable polystyrene particles were obtained with a permanent adsorbed dextran layer at their surface. The comparison with the use of an unmodified dextran indicated that the polymeric surfactants were densely packed at the surface of the particles. The colloidal stability of the suspensions of polystyrene particles as well as their protection against protein adsorption (bovine serum albumin, BSA, used as a test protein) were also examined.
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Affiliation(s)
- C Rouzes
- Laboratoire de Chimie Physique Macromoléculaire, UMR CNRS-INPL 7568, Groupe ENSIC, BP 451, Nancy Cedex 54001, France
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