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相关概念视频

Cell Migration01:09

Cell Migration

17.2K
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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Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

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Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
2.7K
Phagocytosis00:41

Phagocytosis

6.6K
Cells pull particles inward and engulf them in spherical vesicles in an energy-requiring process called endocytosis. Phagocytosis ("cellular eating") is one of three major types of endocytosis. Cells use phagocytosis to take in large objects, such as other cells (or their debris), bacteria, and even viruses.
The objective of phagocytosis is often destruction. Cells use phagocytosis to eliminate unwelcome visitors, like pathogens (e.g., viruses and bacteria). Many immune system cells,...
6.6K
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...
3.5K
Phagocytosis of Apoptotic Cells01:17

Phagocytosis of Apoptotic Cells

4.0K
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or  immature dendritic cells. Non-professional phagocytes such as  epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes. 
Normal cells contain receptors that prevent them from being recognized...
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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Overview
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相关实验视频

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"Phagosome Closure Assay" to Visualize Phagosome Formation in Three Dimensions Using Total Internal Reflection Fluorescent Microscopy TIRFM
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"Phagosome Closure Assay" to Visualize Phagosome Formation in Three Dimensions Using Total Internal Reflection Fluorescent Microscopy TIRFM

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物理限制和细胞吸收诱导持续的细胞迁移

Summer G Paulson1,2, Sophia Liu1,2, Jeremy D Rotty1

  • 1Uniformed Services University of the Health Sciences, Department of Biochemistry, Bethesda, MD, 20814, USA.

Biology open
|September 1, 2025
PubMed
概括

物理限制显著增强BV2微状细胞的细胞消化,作为一个强大的驱动因素. 这种作用涉及Arp2/3复合物和肌酸二,影响细胞迁移和免疫反应.

科学领域:

  • 细胞生物学
  • 免疫学
  • 生物物理

背景情况:

  • 通常在未受限制的体外环境中研究细胞.
  • 身体监禁对细胞的影响尚不清楚.
  • 微质在天生的免疫反应中起着至关重要的作用.

研究的目的:

  • 调查身体监禁对BV2微细胞中IgG介导的细胞的影响.
  • 阐明关闭调节的细胞和细胞迁移的细胞骨机制.
  • 探索"食细胞原始化"的现象及其依赖于受限和细胞粘附.

主要方法:

  • 在受限和未受限的体外试验中使用了类似BV2微细胞.
  • 使用光珠研究IgG介导的细胞.
  • 通过药物抑制剂和遗传干扰,研究了Arp2/3复合物,肌酸蛋白II和整合素依赖粘附的作用.
  • 使用活细胞成像评估细胞迁移和"食细胞初始化".

主要成果:

  • 与未受限制的条件相比,物理限制显著增加了细胞的比例.
  • 隔离部分挽救了菌素II的吸收,并对细胞D产生了部分耐药性.
  • 珠子吸收刺激了持续的细胞迁移,称为"细胞启动",这需要依赖整合素的粘附.
关键词:
其他Arp2/3 综合体有限制的运动性纤维素微细胞骨髓蛋白细胞发生

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  • 在受限 (需要Myosin II,Arp2/3复合体) 和未受限的环境中,对细胞原始化的细胞骨要求有所不同.

    • 结论:

    • 物理限制是微质细胞的强烈增强剂.
    • 封闭会改变细胞骨动力学和细胞化.
    • 通过封闭调节的细胞培养可能是创伤监测的关键先天免疫机制.