Endothelialization of Titanium Surfaces by Bioinspired Cell Adhesion Peptide Coatings

Bioconjug Chem. 2019 Oct 16;30(10):2664-2674. doi: 10.1021/acs.bioconjchem.9b00573. Epub 2019 Sep 30.

Abstract

Common interventional therapies for cardiovascular occlusive diseases, such as the implantation of stents, are at risk of complications like thrombosis or restenosis. Drug-eluting stents have improved patency but simultaneously worsen the endothelialization of the implant. Here, we present a novel peptide coating derived from three proteins of the extracellular matrix named fibronectin, laminin, and elastin. Their active sequences RGD, SIKVAV, and VGVAPG were immobilized onto titanium surfaces by a carrier peptide containing l-3,4-dihydroxyphenylalanine (DOPA). Simultaneous functionalization of the carrier peptide with cyclic c[RGDfK] and SIKVAV had the most potent influence on adhesion, proliferation, viability, and angiogenesis of endothelial cells. By presentation of two adhesion peptides in one molecule, a synergistic enhancement of cell-surface interactions was achieved. Overall, this work clearly demonstrates the advantages of spatially defined peptide coatings for the endothelialization of titanium and thus describes a promising approach for the coating of stents.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Bivalvia
  • Cell Adhesion / drug effects*
  • Cell Differentiation / drug effects
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Human Umbilical Vein Endothelial Cells / cytology*
  • Human Umbilical Vein Endothelial Cells / drug effects*
  • Humans
  • Oligopeptides / chemistry*
  • Oligopeptides / pharmacology*
  • Stents
  • Surface Properties
  • Titanium / chemistry*

Substances

  • Oligopeptides
  • Titanium