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Biomimetic liposomes and planar supported bilayers for the assessment of glycodendrimeric porphyrins interaction with an immobilized lectin.

Abstract
Photodynamic therapy is a potentially efficient treatment for various solid tumours, among which retinoblastoma. Its efficacy depends on the preferential accumulation of photosensitizers in the malignant tissues and their accessibility to light. The specificity of drugs for retinoblastoma cells can be improved by targeting a mannose receptor overexpressed at their surface. With the aim of assessing the recognition of newly synthesized glycodendrimeric porphyrins by such receptors, we have built and characterized an original synthetic biomimetic membrane having similar lipidic composition to that of the retinal cell membranes and bearing Concanavalin A, as a model of the mannose receptor. The interaction of the porphyrin derivatives with liposomes and supported planar bilayers has been studied by dynamic light scattering and quartz crystal microbalance with dissipation monitoring (QCM-D). Only mannosylated porphyrins interacted significantly with the membrane model. The methodology used proved to be efficient for the selection of potentially active compounds.
AuthorsA Makky, J P Michel, Ph Maillard, V Rosilio
JournalBiochimica et biophysica acta (Biochim Biophys Acta) Vol. 1808 Issue 3 Pg. 656-66 (Mar 2011) ISSN: 0006-3002 [Print] Netherlands
PMID21129362 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2010 Elsevier B.V. All rights reserved.
Chemical References
  • Lectins
  • Lipid Bilayers
  • Liposomes
  • Porphyrins
  • Concanavalin A
  • Mannose
Topics
  • Biomimetics
  • Cell Membrane (metabolism)
  • Concanavalin A (metabolism)
  • Humans
  • Lectins (metabolism)
  • Lipid Bilayers (metabolism)
  • Liposomes
  • Mannose (metabolism)
  • Porphyrins (metabolism)
  • Quartz Crystal Microbalance Techniques
  • Retinoblastoma
  • Tumor Cells, Cultured

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