The Process of Wrapping Virus Revealed by a Force Tracing Technique and Simulations.

The Process of Wrapping Virus Revealed by a Force Tracing Technique and Simulations.
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通过力追踪技术和模拟揭示包裹病毒的过程

DOI:
10.1002/advs.201600489
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发表时间:
2017-09
期刊:
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子:
--
通讯作者:
Wang H
Wang H
中科院分区:
其他
文献类型:
--
作者:
Pan Y;Zhang F;Zhang L;Liu S;Cai M;Shan Y;Wang X;Wang H;Wang H

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病毒进入宿主细胞是病毒感染的第一步;然而,其通过内吞作用的动态过程在很大程度上仍然难以捉摸。在这里,力追踪技术和单粒子模拟相结合,研究了单个人类肠道病毒71 (HEV71,一种与手足口病相关的阳性单链RNA病毒)在进入宿主细胞时通过细胞膜内陷的情况。实验结果表明,HEV71在58±16 pN的力作用下,内陷膜泡的时间为278±68 ms。模拟进一步表明,病毒可以非常快地达到部分包裹状态,然后病毒的上表面被膜覆盖很长一段时间。将实验与模拟相结合,揭示了病毒的膜包裹机制,为研究细胞如何启动病毒的内吞作用提供了新的见解。
Viral entry into the host cell is the first step of virus infection; however, its dynamic process via endocytosis remains largely elusive. Here, the force tracing technique and single particle simulation are combined to investigate the invagination of single human enterovirus 71 (HEV71, a positive single‐stranded RNA virus that is associated with hand, foot, and mouth disease) via cell membranes during its host cell entry. The experimental results reveal that the HEV71 invaginates in membrane vesicles at a force of 58 ± 16 pN, a duration time of 278 ± 68 ms. The simulation further shows that the virus can reach a partially wrapped state very fast, then the upper surface of the virus is covered by the membrane traveling over a long period of time. Combining the experiment with the simulation, the mechanism of membrane wrapping of virus is uncovered, which provides new insights into how the cell is operated to initiate the endocytosis of virus.
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