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Engineering functional biomaterials surfaces that resist biofilm formation triggered by unspecific protein adsorption is a key challenge, and these biosurfaces hold a huge potential in implant-associated infection. Herein, we report a water-based facile approach to install carboxylated-hyaluronic acid and sulfated-fucoidan on cationically tethered polydimethylsiloxane (PDMS) implant. We showed that these hydrophilic, charged, polysaccharide-based biosurfaces/biocoatings provide long-term stability, no adsorption of proteins (albumin and fibrinogen), similar to zwitterionic polymers, and enhanced resistance to plasma deposition and growth of Staphylococcus aureus pathogen. These findings shall pave the way in developing novel biocoatings, thereby broadening the applicability of PDMS-based implants in complex biological applications.

Highly Protein Repellent and Antiadhesive Polysaccharide Biomaterial Coating for Urinary Catheter Applications