膜
脂质双层
双层
压扁
振荡(细胞信号)
生物物理学
张力(地质)
材料科学
化学
机械
纳米技术
物理
生物
复合材料
压缩(物理)
生物化学
作者
Shixin Li,Zengshuai Yan,Fang Huang,Xianren Zhang,Tongtao Yue
标识
DOI:10.1016/j.colsurfb.2019.110651
摘要
Mechanical forces acting on a plasma membrane are of essential importance to cellular functioning via inducing delicate change of the membrane shape with the underlying mechanism yet to be elucidated. Here, we introduce an oscillating nanoparticle (NP) interaction with a lipid bilayer membrane, using the coarse-grained simulation to investigate the dynamic membrane response to constrained mechanical stimulation, which is ubiquitous in biology. Our results demonstrate that, the membrane responds to an oscillating NP by generating nanoscale undulation waves, which immediately propagate through the membrane. In dynamics, propagation of the generated membrane undulation waves always starts from flattening of the region where the NP locates, thus producing a lateral force to propel the waves away from the point of stimulation. The speed of membrane undulation wave propagation is proportional to that of NP oscillation and accelerated by increasing the integral membrane surface tension, suggesting that both the membrane bending and stretching contribute to the energy driving the unique response of membrane undulation wave propagation.
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