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相关概念视频

Cell Migration01:09

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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.
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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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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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Studying the Neural Basis of Adaptive Locomotor Behavior in Insects
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使用环境拓的细胞移动

Anne Reversat1,2, Florian Gaertner3, Jack Merrin3

  • 1Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria. anne.reversat@gmail.com.

Nature
|June 26, 2020
PubMed
概括
此摘要是机器生成的。

白细胞可以通过基质地形来驱动自己,而无需细胞粘附. 这种附着性独立的细胞迁移机制将行为细胞骨流与环境纹理结合起来.

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科学领域:

  • 细胞生物学
  • 生物物理
  • 机械生物学

背景情况:

  • 细胞迁移通常依赖于像整体素这样的跨膜粘附受体来将细胞内力量与环境结合起来.
  • 尽管粘附性较低,但白细胞等阿米细胞的迁移速度很快,这表明了其他机制.
  • 了解细胞迁移对于各种生理和病理过程至关重要.

研究的目的:

  • 在没有跨膜力合的情况下研究白细胞迁移的机制.
  • 通过利用环境线索来确定白细胞是否可以在没有粘附的情况下迁移.
  • 探索依附性和依附性独立迁移之间的关系.

主要方法:

  • 将白细胞限制在具有定义地形特征的三维环境中.
  • 观察和分析与基质质感相关的行为细胞骨架的逆流.
  • 在没有跨膜力合的情况下研究力传递.

主要成果:

  • 白细胞可以在没有跨膜力合的情况下传递力和迁移.
  • 细胞利用基板的地形特征进行推进.
  • 逆向的行为流遵循基质质地,产生驱动细胞运动的剪切力.
  • 粘附依赖和粘附独立的迁移是相同原理的变体.

结论:

  • 白细胞迁移可以独立于粘附,通过将逆向的活性流与基质地形相合.
  • 这种无粘附的迁移机制使细胞在运动行为上具有自主性.
  • 这些发现揭示了适用于不同环境的多功能细胞迁移策略.