Modeling particle shape-dependent dynamics in nanomedicine.
Modeling particle shape-dependent dynamics in nanomedicine.
复制标题
纳米医学中的粒子形状动力学建模。
DOI：
10.1166/jnn.2011.3536
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发表时间：
2011-02
影响因子：
--
通讯作者：
Gao J
中科院分区：
文献类型：
--
作者：
Shah S;Liu Y;Hu W;Gao J
纳米医学的主要挑战之一是通过设计具有可控尺寸、形状和材料组成的功能化纳米颗粒来提高纳米颗粒细胞的选择性和粘附效率。最近的数据表明，非球形粒子的生物学性能明显优于球形粒子。尽管有这些令人兴奋的进展，非球形颗粒还没有被广泛用于纳米医学应用，由于缺乏基本的理解形状效应的靶向效率。本文旨在通过计算机模拟研究非球形纳米粒子的形状依赖粘附动力学。将配体-受体结合动力学与布朗动力学相结合，研究了纳米棒在各种血管流动条件下的动态递送过程。研究了纳米粒子形状、配体密度和剪切速率对粘附概率的影响。由于纳米棒的翻滚运动，在相同的配置下，纳米棒比它们的球形对应物更容易接触和粘附到壁。在8 s−1的剪切速率下，纳米棒的结合概率比相同体积的纳米球高出三倍。颗粒的结合概率随着流体剪切速率和通道高度的增加而减小。研究发现布朗运动在很大程度上增强了纳米颗粒的结合。这项研究的结果有助于对颗粒形状如何影响纳米载体的运输和靶向效率的基本理解和知识，这将为靶向药物递送应用的形状特异性纳米药物的设计提供机理见解。
One of the major challenges in nanomedicine is to improve nanoparticle cell selectivity and adhesion efficiency through designing functionalized nanoparticles of controlled sizes, shapes, and material compositions. Recent data on cylindrically shaped filomicelles are beginning to show that non-spherical particles remarkably improved the biological properties over spherical counterpart. Despite these exciting advances, non-spherical particles have not been widely used in nanomedicine applications due to the lack of fundamental understanding of shape effect on targeting efficiency. This paper intends to investigate the shape-dependent adhesion kinetics of non-spherical nanoparticles through computational modeling. The ligand-receptor binding kinetics is coupled with Brownian dynamics to study the dynamic delivery process of nanorods under various vascular flow conditions. The influences of nanoparticle shape, ligand density, and shear rate on adhesion probability are studied. Nanorods are observed to contact and adhere to the wall much easier than their spherical counterparts under the same configuration due to their tumbling motion. The binding probability of a nanorod under a shear rate of 8 s−1 is found to be three times higher than that of a nanosphere with the same volume. The particle binding probability decreases with increased flow shear rate and channel height. The Brownian motion is found to largely enhance nanoparticle binding. Results from this study contribute to the fundamental understanding and knowledge on how particle shape affects the transport and targeting efficiency of nanocarriers, which will provide mechanistic insights on the design of shape-specific nanomedicine for targeted drug delivery applications.
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影响因子：
5.5
作者：
BAYLISS, LE
通讯作者：
BAYLISS, LE
影响因子：
--
作者：
Lee, Tae-Rin;Chang, Yoon-Suk;Kim, Young-Jin
通讯作者：
Kim, Young-Jin
DOI：
10.1098/rspb.1988.0038
发表时间：
1988-06-22
期刊：
PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
DEMBO, M;TORNEY, DC;HAMMER, D
通讯作者：
HAMMER, D
影响因子：
6.2
作者：
Djohari, Hadrian;Dormidontova, Elena E.
通讯作者：
Dormidontova, Elena E.
影响因子：
3.8
作者：
Gentile, Francesco;Ferrari, Mauro;Decuzzi, Paolo
通讯作者：
Decuzzi, Paolo