Hs27纤维细胞对接触指导线索的反应
C Kim1, M Robitaille2, J Christodoulides2
1Mechanical Engineering, School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85281, USA.
Scientific reports
|December 8, 2023
概括
细胞接触指导取决于表面地形. 槽宽度显著影响纤维细胞形态和迁移,在725nm有一个显著的过渡,揭示了细胞形状和运动之间的联系.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 材料科学 材料科学 材料科学
背景情况:
- 细胞对外部地形的反应,称为接触指导,对于理解细胞行为至关重要.
- 地形特征,如山脊/沟尺寸,显著影响细胞形态和动态.
- 关于这些维度对细胞功能的独立和合影响的实验数据有限.
研究的目的:
- 探索对Hs27纤维细胞形态和迁移的地形影响.
- 进行广泛的参数研究,超出之前探索的范围.
- 分析静态和动态的活细胞图像,以获得定量见解.
主要方法:
- 在表面地形学的维度空间中进行广泛的参数研究.
- 活细胞图像的静态和动态分析.
- 细胞形态和迁移模式的量化,以应对不同的地形特征.
主要成果:
- 槽宽度 ([公式:见文本]) 是影响细胞形态的最重要的地形学因素,其次是脊梁宽度 ([公式:见文本]).
- 增加槽宽度促进细胞延长和槽方向的对齐,在725nm观察到趋势变化.
- 定向细胞迁移主要受到沟宽度的影响,沟宽度和沟深度的影响在统计学上是微不足道的 ().
- 细胞形状和对齐之间存在着很强的相关性,不管地形尺寸如何.
- 方向性细胞迁移的统计学上显著的过渡发生在725nm的槽宽,将形态和迁移联系起来.
结论:
- 槽宽度是纤维细胞形态和方向迁移的关键决定因素.
- 细胞行为在725nm槽宽处表现出显著的过渡点,突出显示了细胞对特定地形线索的敏感性.
- 这项研究提供了对细胞表面相互作用的机制性见解,并为观察到的细胞反应提供了潜在的解释.
相关概念视频
Cell Migration
4.9K
Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
4.9K
Introduction to Fibroblasts
3.1K
Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
3.1K
Mechanism of Filopodia Formation
2.3K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
2.3K
Cell-matrix's Response to Mechanical Forces
2.6K
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
2.6K
Cell 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
Actin Polymerization and Cell Motility
5.3K
Actin is a family of globular proteins that are highly abundant in eukaryotic cells. It makes up approximately 1-5% of total cell protein concentration. Actin monomers polymerize to form a complex network of polarized filaments, the actin cytoskeleton, that plays a crucial role in many cellular processes, including cell motility, division, endocytosis, and metastasis of cancer cells.
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
Actin cytoskeleton dynamics can produce pushing, pulling, and resistance forces that help the cell to migrate....
5.3K


