Size-Dependent Endocytosis of Nanoparticles



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The cellular uptake of nanoparticles by living cells is predicted to be strongly size-dependent, according the thermodynamic analysis, and an optimal particle radius of ∼ 25–30 nm at which the cellular uptake reaches a maximum of several thousand is shown to exist. The theoretical prediction provides valuable guidance for the rational design of nanoparticle-based drug-delivery systems.