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Gallic acid tailoring surface functionalities of plasma-polymerized allylamine-coated 316L SS to selectively direct vascular endothelial and smooth muscle cell fate for enhanced endothelialization.

Abstract
The creation of a platform for enhanced vascular endothelia cell (VEC) growth while suppressing vascular smooth muscle cell (VSMC) proliferation offers possibility for advanced coatings of vascular stents. Gallic acid (GA), a chemically unique phenolic acid with important biological functions, presents benefits to the cardiovascular disease therapy because of its superior antioxidant effect and a selectivity to support the growth of ECs more than SMCs. In this study, GA was explored to tailor such a multifunctional stent surface combined with plasma polymerization technique. On the basis of the chemical coupling reaction, GA was bound to an amine-group-rich plasma-polymerized allylamine (PPAam) coating. The GA-functionalized PPAam (GA-PPAam) surface created a favorable microenvironment to obtain high ECs and SMCs selectivity. The GA-PPAam coating showed remarkable enhancement in the adhesion, viability, proliferation, migration, and release of nitric oxide (NO) of human umbilical vein endothelial cells (HUVECs). The GA-PPAam coating also resulted in remarkable inhibition effect on human umbilical artery smooth muscle cell (HUASMC) adhesion and proliferation. These striking findings may provide a guide for designing the new generation of multifunctional vascular devices.
AuthorsZhilu Yang, Kaiqin Xiong, Pengkai Qi, Ying Yang, Qiufen Tu, Jin Wang, Nan Huang
JournalACS applied materials & interfaces (ACS Appl Mater Interfaces) Vol. 6 Issue 4 Pg. 2647-56 (Feb 26 2014) ISSN: 1944-8252 [Electronic] United States
PMID24484285 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Plasma Gases
  • Nitric Oxide
  • Allylamine
  • Gallic Acid
Topics
  • Allylamine (chemistry)
  • Cell Lineage
  • Cells, Cultured
  • Endothelium, Vascular (cytology)
  • Gallic Acid (chemistry)
  • Humans
  • Muscle, Smooth (cytology)
  • Muscle, Smooth, Vascular (cytology)
  • Nitric Oxide (biosynthesis)
  • Photoelectron Spectroscopy
  • Plasma Gases
  • Polymerization
  • Spectroscopy, Fourier Transform Infrared
  • Surface Properties

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