Optimal aspect ratio of endocytosed spherocylindrical nanoparticle

Optimal aspect ratio of endocytosed spherocylindrical nanoparticle
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内吞球形纳米粒子的最佳纵横比

DOI:
10.1007/s11467-014-0444-y
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发表时间:
2015-05
影响因子:
7.5
通讯作者:
Xu Hou-Qiang
Xu Hou-Qiang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Chen Ying-Bing;Liu Yan-Hui;Zeng Yan;Mao Wei;Hu Lin;Mao Zong-Liang;Xu Hou-Qiang

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最近的模拟表明,生物颗粒的大小和形状可以调节内吞过程,并且研究提供了更多的定量信息,表明球圆柱生物颗粒的内吞效率是由其宽高比决定的。同时,受体-配体复合物的尺寸对细胞环境中蛋白质的大小依赖性排斥有很强的影响。然而,这些早期的理论工作包括模拟并没有考虑配体-受体复合物尺寸对内吞过程的影响。因此,有必要解决配体-受体复合物尺寸的影响,并确定球-圆柱生物颗粒在内吞过程中的最佳宽高比。因此,我们提出了一个连续弹性模型,其结果表明,长宽比取决于配体-受体配合物的尺寸和球-圆柱生物颗粒的半径。该模型提供了内吞球形生物颗粒长宽比的相图,随着配体密度的增加,相图中长宽比越大,突出了生物颗粒的设计。
Recent simulations have demonstrated that bioparticle size and shape modulate the process of endocytosis, and studies have provided more quantitative information that the endocytosis efficiency of spherocylindrical bioparticles is decided by its aspect ratio. At the same time, the dimensions of the receptor-ligand complex have strong effects on the size-dependent exclusion of proteins within the cellular environment. However, these earlier theoretical works including simulations did not consider the effects of ligand-receptor complex dimension on the endocytosis process. Thus, it is necessary to resolve the effects of ligand-receptor complex dimension and determine the optimal aspect ratio of spherocylindrical bioparticles in the process of endocytosis. Accordingly, we proposed a continuum elastic model, of which the results indicate that the aspect ratio depends on the ligand-receptor complex dimension and the radius of the spherocylindrical bioparticle. This model provides a phase diagram of the aspect ratio of endocytosed spherocylindrical bioparticles, the larger aspect ratio of which appears in the phase diagram with increasing ligand density, and highlights the bioparticle design.
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