对于巨细胞迁移和细胞皮层机制来说,埃兹林,放射素和莫因是不可或缺的
Perrine Verdys1,2, Javier Rey Barroso1, Adeline Girel1
1Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse, CNRS, Université Toulouse III - Paul Sabatier (UT3), Toulouse, France.
The EMBO journal
|July 18, 2024
概括
即使没有ERM蛋白 (埃兹林,放射素,素),巨细胞也能维持细胞迁移所必需的actin结构. 这项研究挑战了ERM在细胞力学和迁移中的普遍作用,突出了巨细胞特异性适应.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 免疫学 免疫学 免疫学
背景情况:
- 细胞皮质对于机械支持至关重要,它依赖于ERM蛋白质 (埃兹林,放射素,莫因) 来将血连接到actin细胞骨架.
- 在各种细胞类型中,ERM蛋白被认为对细胞分裂和迁移过程至关重要.
研究的目的:
- 研究ERM蛋白在白细胞 (巨细胞) 迁移中的作用.
- 确定ERM蛋白是否对于形成actin结构和维持巨细胞皮质机制至关重要.
主要方法:
- 生成单一和三重ERM淘汰赛巨细胞系.
- 在淘汰性巨细胞中分析了actin结构的形成 (filopodia,lamellipodia,podosomes,ruffles).
- 在不同的背景下评估巨细胞迁移.
- 测量了巨细胞皮层的机械特性.
主要成果:
- 缺乏ERM蛋白质的巨细胞成功地形成了迁移所必不可少的actin结构.
- 在不同条件下的单或三重ERM淘汰模式中,巨细胞迁移没有受到影响.
- 缺少ERM蛋白质并没有改变巨细胞皮层的机械性质.
结论:
- 对于巨细胞皮层机制或迁移来说,ERM蛋白并不总是必不可少的.
- 巨细胞皮质可塑性可能具有独特的适应机制,与其他细胞类型不同.
- 这些发现需要重新评估ERM蛋白在细胞移动性和机制中的既定作用.
相关概念视频
01:16Cell Motility through Blebbing
1.9K
Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
Blebbing Through the Matrix
In multicellular...
1.9K
01:32Cytoskeletal Coordination in Cell Migration
4.7K
A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
4.7K
01:35Cancer Cell Migration through Invadopodia
2.3K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.3K
01:31Mechanism of Lamellipodia Formation
2.5K
Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...
2.5K
01:21Cell Polarization by Rho Proteins
2.7K
Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
2.7K
01:09Cell Migration
17.0K
Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
17.0K