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Nitric Oxide-Generating Antiplatelet Polyurethane Surfaces with Multiple Additional Biofunctions via Cyclodextrin-Based Host–Guest Interactions

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journal contribution
posted on 11.12.2019, 21:46 by Sheng Jin, Jialei Huang, Xianshuang Chen, Hao Gu, Dan Li, Aiyang Zhang, Xiaoli Liu, Hong Chen
A nitric oxide-generating polymeric coating was prepared by copolymerization of the hydrophilic monomer 2-hydroxyethyl methacrylate (HEMA) and the comonomer 1-adamantan-1-ylmethyl methacrylate (AdaMA) with subsequent incorporation of selenocystamine. The coating was applied to polyurethane (PU) as a substrate. In the presence of a NO donor, the PU–PHA-Se surface generated nitric oxide (NO). This surface was shown to inhibit platelet adhesion and human umbilical vein smooth muscle cell adhesion and proliferation. The poly­(AdaMA) on the modified surface was designed to allow the incorporation of functional units into the PU–PHA-Se surface via host–guest interactions between the adamantane groups and cyclodextrin (CD) derivatives. In this work, two functional CD complexes containing lysine (CD-L) and sulfonate (CD-S) groups were incorporated into the PU–PHA-Se surface. CD-L conferred fibrinolytic activity, whereas CD-S promoted human umbilical vein endothelial cell proliferation. This NO-generating antiplatelet polymeric coating has potential as a platform for modifying surfaces with multiple additional biological functions via host–guest interactions, thus providing an alternative approach for the preparation of biomaterials with multifunctionality.

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