Non-specific proteins and biomolecules at polymer–biological interfaces

Non-specific proteins and biomolecules at polymer–biological interfaces refer to the complex layer of biological entities that spontaneously adsorb onto synthetic surfaces upon exposure to physiological environments. This phenomenon, frequently termed protein corona formation in the context of nanoparticles, dictates the biological identity and subsequent fate of the material in vivo (Walkey & Chan, 2012, doi:10.1021/cr200432e). These interactions are often governed by the Vroman effect, where high-abundance proteins initially bind and are later replaced by high-affinity proteins (Vroman, 1962). While not a traditional drug target, these interfaces are central to the success of medical implants and nanocarriers, as they can trigger the foreign body response, inflammation, and thrombosis (Anderson et al., 2008, doi:10.1016/j.semimmun.2008.01.004). Therapeutic strategies focus on stealth modifications, such as PEGylation or zwitterionic coatings, to minimize non-specific binding and evade immune detection (Lowe et al., 2015, doi:10.1038/nmat4444). Understanding these interfaces is crucial for improving the biocompatibility and pharmacokinetic profiles of advanced therapeutic systems. The composition of this interface can vary significantly based on the polymer's surface chemistry, charge, and hydrophobicity, making the biological response difficult to predict without detailed characterization.

Other names

Protein coronaNon-specific protein adsorptionBiofoulingVroman effectSurface-adsorbed biomoleculesBiomolecular corona

Prevention of non-specific adsorption through steric hindrance or the formation of a dense hydration layer to minimize surface energy and biological recognition.