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RGD-functionalized spherulites as targeted vectors captured by adherent cultured cells.

P Chenevier1, B Delord, J Amédée

  • 1Centre de Recherche Paul Pascal, av Pr Schweitzer, 33600 Pessac, France. pac38@cornell.edu

Biochimica Et Biophysica Acta
|November 15, 2002
PubMed
Summary

Researchers functionalized neutral spherulites with RGD ligands to target adherent cells. These RGD spherulites showed specific binding and internalization into endothelial and osteoprogenitor cells.

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Nanotechnology

Background:

  • Spherulites are multilamellar vesicles with concentric shells capable of encapsulating molecules.
  • Targeting drug delivery systems to specific cells is crucial for therapeutic efficacy.

Purpose of the Study:

  • To investigate the targeting potential of neutral spherulites functionalized with RGD ligands to adherent culture cells.
  • To evaluate the strength and specificity of RGD spherulite association with various cell lines.

Main Methods:

  • Functionalization of neutral spherulites with RGD-containing ligands.
  • Assessing the binding strength and specificity of RGD spherulites to EAhy 926 endothelial cells, human umbilical vein endothelial cells (HUVECs), and human osteoprogenitor (HOP) cells.
  • Investigating the molecular interactions between RGD spherulites and the EAhy 926 cell surface.

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Main Results:

  • RGD-functionalized spherulites demonstrated specific binding to the tested cell lines.
  • The molecular interactions at the cell surface were characterized.
  • Internalization of RGD spherulites into cells was observed after binding.

Conclusions:

  • Surface functionalization with RGD ligands enables targeted delivery of spherulites to adherent cells.
  • RGD spherulites show potential as a cellular delivery vehicle for various cell types, including endothelial and osteoprogenitor cells.
  • The internalization of RGD spherulites suggests their utility in intracellular delivery applications.