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相关概念视频

Cell Migration01:19

Cell Migration

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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.
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Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

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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...
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Chemotaxis and Direction of Cell Migration01:21

Chemotaxis and Direction of Cell Migration

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Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon...
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Role of Myosin in Cell Migration01:18

Role of Myosin in Cell Migration

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Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
Myosin II  is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction....
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Migration00:53

Migration

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Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
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Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

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Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
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相关实验视频

Updated: Jun 30, 2025

Evaluation of Cancer Stem Cell Migration Using Compartmentalizing Microfluidic Devices and Live Cell Imaging
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Evaluation of Cancer Stem Cell Migration Using Compartmentalizing Microfluidic Devices and Live Cell Imaging

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取决于大小的自我回避使得宏观单细胞的超扩散迁移成为可能.

Lucas Tröger1, Florian Goirand1, Karen Alim1

  • 1Technical University of Munich, School of Natural Sciences, Department of Bioscience, Center for Protein Assemblies, Garching 85748, Germany.

Proceedings of the National Academy of Sciences of the United States of America
|March 22, 2024
PubMed
概括
此摘要是机器生成的。

粘液菌Physarum polycephalum通过自我避开的运动表现出超扩散迁移. 细胞大小,而不是食物的存在,驱动长期的超扩散,这表明其大小具有进化优势.

关键词:
行为行为行为行为行为.移民 移民 迁移 迁移多细胞性多细胞性塑形粘液模具的塑形粘液模具

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Study of Cell Migration in Microfabricated Channels
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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

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Study of Cell Migration in Microfabricated Channels
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科学领域:

  • 细胞生物学 细胞生物学
  • 生物物理学的生物物理.
  • 生态生态学 生态生态学

背景情况:

  • 细胞采用不同的策略来定位食物和伴侣等资源.
  • 粘液菌Physarum polycephalum在寻找食物时形成了一个独特的大型网状菌.
  • 这种巨型细胞结构的进化优势仍然是一个悬而未决的问题.

研究的目的:

  • 实验性地研究和量化Physarum polycephalum plasmodia的迁移行为.
  • 了解细胞大小和食物供应在迁移动态中的作用.
  • 为了阐明粘菌食策略背后的机制.

主要方法:

  • 在几天内对Physarum polycephalum plasmodia迁移的实验观测.
  • 开发一个基于数据的模型,用十个参数来描述迁移.
  • 在食物的存在和缺席下分析迁移模式.
  • 改变生物体的大小,以评估其对迁徙的影响.

主要成果:

  • 头 (Physarum polycephalum) 通过自我避开的跑跳动表现出超扩散迁移.
  • 食物存在改变运行时间统计,影响短期动态.
  • 长期的超扩散主要由细胞大小依赖的自我避开决定,独立于食物.

结论:

  • 粘液菌的超扩散迁移是一种由自我避开驱动的强大策略.
  • 细胞大小是长期有效食的关键因素.
  • 粘液菌的大小,宏观大小,在资源获取方面提供了显著的进化优势.