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    Ultrathin Nanostructured Films of Hyaluronic Acid and Functionalized beta-Cyclodextrin Polymer Suppress Bacterial Infection and Capsular Formation of Medical Silicone Implants

    Journal: Biomacromolecules

    Authors: Nguyen, Thi Thuy Chau; Shin, Chung Min; Lee, Su Jin; Koh, Eun Seo; Kwon, Hyeok Hee; Park, Hyewon; Kim, Dong Ho; Choi, Chul Hee; Oh, Sang-Ha; Kim, Dong Woon; Yang, Sung Yun

    Organizations: Chungnam National University; Chungnam National University Hospital; National Research Foundation (NRF) - Korean government through the Minis try of Science and ICT (MSIT) [2020R1A2C2009666, 2019R1A2C2004884]

    A type of ultrathin films has been developed for suppressing capsule formation induced by medical silicone implants and hence reducing the inflammation response to such formation and the differentiation to myofibroblasts. The films were each fabricated from hyaluronic acid (HA) and modified beta-cyclodextrin (Mod-beta-CyD) polymer which was synthesized with a cyclodextrin with partially substituted quaternary amine. Ultrathin films comprising HA and Mod-beta-CyD or poly(allylamine hydrochloride) (PAH) were fabricated by using a layer-by-layer dipping method. The electrostatic interactions produced from the functional groups of Mod-beta-CyD and HA influenced the surface morphology, wettability, and bio-functional activity of the film. Notably, medical silicone implants coated with PAH/HA and Mod-beta-CyD multilayers under a low pH condition exhibited excellent biocompatibility and antibiofilm and anti-inflammation properties. Implantation of these nanoscale film-coated silicones showed a reduced capsular thickness as well as reduced TGF beta-SMAD signaling, myofibroblast differentiation, biofilm formation, and inflammatory response levels. We expect our novel coating system to be considered a strong candidate for use in various medical implant applications in order to decrease implant-induced capsule formation.
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