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arXiv 1101.2579cond-mat.softphysics.bio-ph
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相互作用对纳米颗粒细胞摄取的影响

Effect of interactions on the cellular uptake of nanoparticles

Abhishek Chaudhuri, Giuseppe Battaglia, Ramin Golestanian

摘要:

我们提出了一个简单的两态模型来理解纳米颗粒的尺寸依赖性内吞作用。使用这个模型,我们阐明了相关的能量方面需要了解的尺寸依赖性的摄取机制,并验证它正确预测的行为在大,小颗粒尺寸。在纳米颗粒之间没有相互作用的情况下,我们观察到尺寸的不对称分布,在中间尺寸处具有最大摄取,并且在最小尺寸截止值以下不能有内吞作用。在我们的模型中,包括相互作用的影响有显着的吸收特性的影响。吸引相互作用使最小尺寸截止值移动并增加最佳摄取,而排斥相互作用使分布更对称,降低最佳摄取。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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