Fig. 9

Schematic figure of the protein adsorption and functionalization-based strategy for enhancing interface-epithelial integration. Plasma polymerized allylamine surface is capable of adsorbing high amount of fibronectin from the serum protein pool and functionalizing it by exposing its functional protein domains. The functionalized fibronectin can strongly bind to cell membrane integrin and activate epithelial barrier structure related signaling pathway to enhance the formation of epithelial barrier structure, which provides a good strategy for improving interface-epithelial integration