Browsing Faculté de pharmacie – Travaux et publications by Author "Banquy, Xavier"
Now showing items 1-20 of 38
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2D, 3D and 4D active compound delivery in tissue engineering and regenerative medicine
(2015-07-01)Recent advances in tissue engineering and regenerative medicine have shown that controlling cells microenvironment during growth is a key element to the development of successful therapeutic system. To achieve such control, researchers have first ... -
Assessment of PEG on Polymeric Particles Surface, a Key Step in Drug Carrier Translation
(2014-07)Injectable drug nanocarriers have greatly benefited in their clinical development from the addition of a superficial hydrophilic corona to improve their cargo pharmacokinetics. The most studied and used polymer for this purpose is poly(ethylene glycol), ... -
Bile acid-based drug delivery systems for enhanced doxorubicin encapsulation: Comparing hydrophobic and ionic interactions in drug loading and release
(American Chemical Society, 2018-01-29)Doxorubicin (Dox) is a drug of choice in the design of drug delivery systems directed towards breast cancers, but is often limited by loading and control over its release from polymer micelles. Bile acid-based block copolymers present certain advantages ... -
Bioinspired microstructures of chitosan hydrogel provide enhanced wear protection
(Royal Society of Chemistry, 2018-02-16)We describe the fabrication of physical chitosan hydrogels exhibiting a layered structure. This bilayered structure, as shown by SEM and confocal microscopy, is composed of a thin dense superficial zone (SZ), covering a deeper zone (DZ) containing ... -
Biomimetic bottle-brush polymer coatings for fabrication of ultra-low fouling surfaces
(Wiley, 2018-11-13)The increasing demand for long lasting antifouling surfaces has steered the development of accessible, novel, biocompatible and environmentally-friendly materials. Inspired by lubricin (LUB), a component of mammalian synovial fluid with excellent ... -
Chitosan hydrogel micro-bio-devices with complex capillary patterns via reactive-diffusive self-assembly
(Elsevier, 2019-08-29)We present chitosan hydrogel microfluidic devices with self-assembled complex microcapillary patterns, conveniently formed by a diffusion-reaction process. These patterns in chitosan hydrogels are formed by a single-step procedure involving diffusion ... -
Coiled-coil affinity-based system for the controlled release of biofunctionalized gold nanoparticles from alginate hydrogels
(American Chemical Society, 2019-04-05)Affinity-based systems represent a promising solution to control the delivery of therapeutics using hydrogels. Here, we report a hybrid system that is based on the peptidic E/K coiled coil affinity pair to mediate the release of gold nanoparticles (NPs) ... -
Deep tissue penetration of bottle-brush polymers via cell capture evasion and fast diffusion
(American Chemical Society, 2022-12-14)Drug nanocarriers (NCs) capable of crossing the vascular endothelium and deeply penetrating into dense tissues of the CNS could potentially transform the management of neurological diseases. In the present study, we investigated the interaction of ... -
Effect of polymer architecture on Curcumin 1 encapsulation and release from PEGylated polymer nanoparticles: toward a drug delivery nano-platform to the CNS
(2015-10-01)We developed a nanoparticles (NPs) library from poly(ethylene glycol)–poly lactic acid comb-like polymers with variable amount of PEG. Curcumin was encapsulated in the NPs with a view to develop a delivery platform to treat diseases involving oxidative ... -
Effect of Polymer Architecture on the Structural and Biophysical Properties of PEG-PLA Nanoparticles
(2015-05-01)Polymers made of poly(ethylene glycol) chains grafted to poly(lactic acid) chains (PEG-g-PLA) were used to produce stealth drug nanocarriers. A library of comb-like PEG-g-PLA polymers with different PEG grafting densities was prepared in order to obtain ... -
Effect of surface chemistry of polymeric nanoparticles on cutaneous penetration of cholecalciferol
(Elsevier, 2018-10-11)We investigated the influence of nanoparticle (NP) surface composition on different aspects of skin delivery of a lipophilic drug: chemical stability, release and skin penetration. Cholecalciferol was chosen as a labile model drug. Poly(lactic acid) ... -
Electrostatic screening length in “soft” electrolyte solutions
(American Chemical Society, 2019-07-30)Using the Surface Forces Apparatus on solutions of polymeric ions, the effect of specific ion–ion correlations is evaluated on the characteristic decay length, λ, of screened electrostatic interactions between charged surfaces. Electrolyte solutions ... -
Hydration forces at solid and fluid biointerfaces
(American Vacuum Society, 2016-01)We review the different molecular mechanisms giving rise to the repulsive hydration force between biologically relevant surfaces such as lipid bilayers and bio-ceramics. As we will show, the hydration force manifests itself in very different and ... -
(In)stability of ligands at the surface of inorganic nanoparticles : a forgotten question in nanomedicine?
(Elsevier, 2022-06-14)Multiple inorganic nanoparticles (NPs) are currently being developed for nanomedicine. Various core materials and shapes are explored, but they all display a common hybrid structure, with organic ligands on their surface. These ligands play a key role ... -
Interaction forces between pegylated star-shaped polymers at mica surfaces
(American Chemical Society, 2017-08-03)We present a study focused on characterizing the interaction forces between mica surfaces across solutions containing star-shaped polymers with cationic ends. Using the Surface Forces Apparatus, we show that the interaction forces in pure water between ... -
Interfacial forces across ionic liquid solutions : effect of ion concentration and water domains
(American Chemical Society, 2019-07-23)Using the surface force apparatus (SFA), the interaction forces between mica surfaces across ionic liquid (IL) solutions are studied. The IL solution, 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide in propylene carbonate solvent, is used ... -
Intermolecular interactions between Bottlebrush Polymers boost the protection of surfaces against frictional wear
(ACS Publications, 2018-05-30)Polymers exhibiting the bottlebrush (BB) architecture have excellent lubricating properties. However, to motivate their use in real life systems, they must also protect surfaces against frictional damage. In this article, we synthesized a library of ... -
Lubrication and wear protection of micro-structured hydrogels using bioinspired fluids
(American Chemical Society, 2018-11-21)We report the fabrication and the use of a bioinspired synovial fluid acting as a lubricant fluid and anti-wear agent at soft and porous chitosan hydrogel tribopairs. This synthetic synovial fluid is composed of sodium hyaluronate (HA) and a bottle-brush ... -
Mechanistic insights into the directed assembly of hydrogel blocks mediated by polyelectrolytes or microgels
(2017-04-18)In this study, we report the directed assembly of hydrogel blocks mediated by electrostatic interactions. We compared two different assembly mechanisms, one mediated by microgel particles and another mediated by direct interaction between ... -
A multi-modal miniature surface forces apparatus (µSFA) for interfacial science measurements
(American Chemical Society, 2019-07-30)Advances in the research of intermolecular and surface interactions result from the development of new and improved measurement techniques and combinations of existing techniques. Here, we present a new miniature version of the Surface Force Apparatus ...
