Sensing specific adhesion of liposomal and micellar systems with attached carbohydrate recognition structures at lectin surfaces

J Colloid Interface Sci. 2002 May 15;249(2):274-81. doi: 10.1006/jcis.2002.8272.

Abstract

A quartz crystal microbalance was used to investigate the adsorption behavior of liposomes and mixed micelles with attached carbohydrate recognition structures at lectin-coated quartz plates. With a self-assembly technique, the quartz was coated with the lectin Concanavalin A. In a first attempt, liposomes of natural soybean PC as well as synthetic POPC, containing 10% reactive N-Glut-PE each, were decorated with a mannopyranoside recognition structure to investigate the specific adsorption at the lectin-coated quartz surface in dependence on the concentration. In a second model, the bile salt sodium cholate was introduced to solubilize the mannopyranoside-modified liposomes and to transform them into mannopyranoside-modified binary mixed micelles. The adsorption of these micelles was further investigated. In a third approach, the adsorption behavior of mannopyranoside-modified ternary mixed bile salt-phosphatidylcholine-fatty acid micelles was characterized with sodium laurate, palmitate, and oleate as fatty acids. The micelles with oleate showed only a small frequency decrease, whereas the micelles with laurate and palmitate induced higher frequency changes. A dependence on the alkyl chain length could be detected. While the adsorption of liposomes containing recognition structures at QCM surfaces is nowadays well-established, the QCM detection of the adsorption of mixed bile salt micelles, transformed from these liposomes by solubilization, is a novel and very promising field for the development of innovative colloidal drug delivery systems.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bile Acids and Salts / chemistry
  • Carbohydrates / chemistry*
  • Concanavalin A / chemistry
  • Fatty Acids / chemistry
  • Lectins / chemistry*
  • Liposomes / chemistry*
  • Mannose / chemistry
  • Micelles*
  • Surface Properties

Substances

  • Bile Acids and Salts
  • Carbohydrates
  • Fatty Acids
  • Lectins
  • Liposomes
  • Micelles
  • Concanavalin A
  • Mannose