Selective Adhesion of Endothelial Cells to Artificial Membranes with a Synthetic RGD-Lipopeptide
- 2 March 2001
- journal article
- research article
- Published by Wiley in Chemistry – A European Journal
- Vol. 7 (5) , 1095-1101
- https://doi.org/10.1002/1521-3765(20010302)7:5<1095::aid-chem1095>3.0.co;2-b
Abstract
A constrained cyclic Arg-Gly-Asp-D-Phe-Lys, abbreviated as cyclo(-RGDfK-), lipopeptide has been synthesized and incorporated into artificial membranes such as giant vesicles with DOPC and solid-supported lipid bilayers. The selective adhesion and spreading of endothelial cells of the human umbilical cord on solids functionalized by membranes with this RGD-lipopeptide have been observed. Furthermore, we have demonstrated strong selective adhesion of giant vesicles to endothelial cells through local adhesion domains by combined application of hydrodynamic flow field and reflection interference contrast microscopy (RICM). The adhesion can be inhibited by competition with a water-soluble RGD peptide. We suggest that this strategy could improve the efficiency of liposomes targeting used as vectors or as drug carriers to cells. Un lipopeptide possédant un peptide cyclique contraint Arg-Gly-Asp-D-Phe-Lys cyclo(-RGDfK-)a été synthétisé et incorporé dans des membranes lipidiques telles que des vésicules géantes de DOPC ou des films lipidiques supportés. Des cellules endothéliales provenant d'un cordon ombilical humain adhèrent sélectivement sur une surface solide fonctionnalisée par dépôt de membrane contenant ce lipopeptide RGD. De plus, nous avons montré que des vésicules géantes contenant ce lipopeptide adhèrent fortement et sélectivement sur ces cellules endothéliales suivant des domaines d'adhésion locale grâce à l'observation par microscopie à contraste d'interférences par réflexion (RICM) en appliquant simultanément un flux hydrodynamique. L'adhésion peut être inhibée par compétition avec un peptide RGD soluble dans l'eau. Nous suggérons que cette stratégie permettrait d'améliorer l'efficacité du ciblage de cellules par des liposomes utilisés comme vecteurs ou transporteurs de médicaments vers des cellules cibles.Keywords
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