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Artículo

Interaction of dextran derivatives with lipid monolayers and the consequential modulation of the film properties

Cámara, Candelaria InésIcon ; Wilke, NataliaIcon
Fecha de publicación: 04/2017
Editorial: Elsevier Ireland
Revista: Chemistry And Physics Of Lipids
ISSN: 0009-3084
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Polysaccharides have been associated with various biological functions through their binding to membranes, but their specific role is still under debate. The aim of this work was to study the interaction of cationic and anionic polysaccharides with anionic and zwitterionic monolayers, at different subphase compositions, thus analyzing the influence of electrostatics on the interaction. The consequent effect of the polymer-lipid binding on the film properties was studied, with special interest in monolayer dynamics. The results indicate that electrostatic interactions play an important role in polymer-membrane affinity, and that the polymers formed a sub-layer, which increased the shear viscosity of the interface. The interacting polymer, even when it did not penetrate the lipid film, induced a polymer-like behavior of the monolayer regarding its dynamics: the whole film (polymer + lipid) became very viscous. As a consequence, the dynamic of the membrane was affected, thus inducing changes in the film topography, although the energetics for phase transition and the stability of each phase were modified slightly or not at all.
Palabras clave: Dextran Sulfate Derivatives , Domain Nuclation , Membrane Rheology , Polymer Lipid Interaction , Surface Viscosity
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/57551
URL: https://www.sciencedirect.com/science/article/pii/S0009308416301712
DOI: https://doi.org/10.1016/j.chemphyslip.2017.03.005
Colecciones
Articulos(CIQUIBIC)
Articulos de CENTRO DE INVEST.EN QCA.BIOL.DE CORDOBA (P)
Citación
Cámara, Candelaria Inés; Wilke, Natalia; Interaction of dextran derivatives with lipid monolayers and the consequential modulation of the film properties; Elsevier Ireland; Chemistry And Physics Of Lipids; 204; 4-2017; 34-42
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