The effect of interactions on the cellular uptake of nanoparticles

Chaudhuri, A.; Battaglia, G.; Golestanian, Ramin

doi:10.1088/1478-3975/8/4/046002

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The effect of interactions on the cellular uptake of nanoparticles

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Golestanian, Ramin
Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Chaudhuri, A., Battaglia, G., & Golestanian, R. (2011). The effect of interactions on the cellular uptake of nanoparticles. Physical Biology, 8(4): 046002. doi:10.1088/1478-3975/8/4/046002.

Cite as: https://hdl.handle.net/21.11116/0000-0001-7881-6

Abstract

We present a simple two-state model to understand the size-dependent endocytosis of nanoparticles. Using this model, we elucidate the relevant energy terms required to understand the size-dependent uptake mechanism and verify it by correctly predicting the behavior at large and small particle sizes. In the absence of interactions between the nanoparticles, we observe an asymmetric distribution of sizes with maximum uptake at intermediate sizes and a minimum size cut-off below which there can be no endocytosis. Including the effect of interactions in our model has remarkable effects on the uptake characteristics. Attractive interactions shift the minimum size cut-off and increase the optimal uptake while repulsive interactions make the distribution more symmetric lowering the optimal uptake. © 2011 IOP Publishing Ltd.