Abstract
We show that protein unfolding on biomaterials may be dramatically reduced via tuning the chemical heterogeneity of the protein-material interface. Specifically, using dynamic single-molecule methods, we confirmed that the transient structure and dynamics of fibronectin (FN) may be mediated through varying the composition of random copolymer brushes. The brushes, which themselves represent an intriguing biomaterial, were composed of oligoethylene glycol and sulfobetaine methacrylate and presumably stabilized FN through partitioning and/or segregation of the copolymers. We further showed that, by controlling the transient structure and dynamics of FN, the secretion of TNF-α and IL-6 by RAW 264.7 was markedly diminished.
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