细胞骨架——复杂的相互作用网格。

The Cytoskeleton-A Complex Interacting Meshwork.

机构信息

Institute of Anatomy and Cell Biology, Martin Luther University Halle-Wittenberg, Grosse Steinstrasse 52, 06108 Halle (Saale), Germany.

出版信息

Cells. 2019 Apr 18;8(4):362. doi: 10.3390/cells8040362.

Abstract

The cytoskeleton of animal cells is one of the most complicated and functionally versatile structures, involved in processes such as endocytosis, cell division, intra-cellular transport, motility, force transmission, reaction to external forces, adhesion and preservation, and adaptation of cell shape. These functions are mediated by three classical cytoskeletal filament types, as follows: Actin, microtubules, and intermediate filaments. The named filaments form a network that is highly structured and dynamic, responding to external and internal cues with a quick reorganization that is orchestrated on the time scale of minutes and has to be tightly regulated. Especially in brain tumors, the cytoskeleton plays an important role in spreading and migration of tumor cells. As the cytoskeletal organization and regulation is complex and many-faceted, this review aims to summarize the findings about cytoskeletal filament types, including substructures formed by them, such as lamellipodia, stress fibers, and interactions between intermediate filaments, microtubules and actin. Additionally, crucial regulatory aspects of the cytoskeletal filaments and the formed substructures are discussed and integrated into the concepts of cell motility. Even though little is known about the impact of cytoskeletal alterations on the progress of glioma, a final point discussed will be the impact of established cytoskeletal alterations in the cellular behavior and invasion of glioma.

摘要

动物细胞的细胞骨架是最复杂和多功能的结构之一,参与了内吞作用、细胞分裂、细胞内运输、运动、力传递、对外力的反应、黏附和保存以及细胞形状的适应等过程。这些功能是由三种经典的细胞骨架丝状纤维类型介导的,如下所述:肌动蛋白、微管和中间纤维。这些命名的丝状纤维形成了一个高度结构化和动态的网络,对外界和内部信号做出快速重组反应,其协调时间尺度在分钟内,并且需要严格调控。特别是在脑肿瘤中,细胞骨架在肿瘤细胞的扩散和迁移中起着重要作用。由于细胞骨架的组织和调节非常复杂和多方面,因此本综述旨在总结关于细胞骨架丝状纤维类型的发现,包括它们形成的亚结构,如片状伪足、应力纤维以及中间纤维、微管和肌动蛋白之间的相互作用。此外,还讨论了细胞骨架丝状纤维和形成的亚结构的关键调节方面,并将其整合到细胞运动的概念中。尽管人们对细胞骨架改变对神经胶质瘤进展的影响知之甚少,但最后将讨论已建立的细胞骨架改变对神经胶质瘤细胞行为和侵袭的影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4bcf/6523135/6884d084d629/cells-08-00362-g001.jpg

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