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相关概念视频

Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

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The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
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Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

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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...
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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....
3.5K
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

7.9K
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Mechanical Protein Functions01:58

Mechanical Protein Functions

5.8K
Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical forces and proteins that are subjected to mechanical forces. Proteins providing mechanical support to the structure of the cell, such as keratin, are subjected to mechanical force, whereas proteins involved in cell movement and transport of molecules across cell membranes, such as an ion pump, are examples of generating mechanical force. 
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Intracellular Signaling Affects Focal Adhesions01:17

Intracellular Signaling Affects Focal Adhesions

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Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
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相关实验视频

Updated: Feb 28, 2026

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques
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Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques

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动态分子过程中介于细胞机械传导.

Brenton D Hoffman1, Carsten Grashoff, Martin A Schwartz

  • 1Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia 22908, USA.

Nature
|July 22, 2011
PubMed
概括
此摘要是机器生成的。

细胞通过像细胞骨架这样的动态结构感知机械力. 了解这些细胞对机械力量的反应如何影响发育,生理学和疾病是关键.

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Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads
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A Simplified System for Evaluating Cell Mechanosensing and Durotaxis In Vitro
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相关实验视频

Last Updated: Feb 28, 2026

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques
08:28

Measurement of Force-Sensitive Protein Dynamics in Living Cells Using a Combination of Fluorescent Techniques

Published on: November 2, 2018

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Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads
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Analyzing Cell Surface Adhesion Remodeling in Response to Mechanical Tension Using Magnetic Beads

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A Simplified System for Evaluating Cell Mechanosensing and Durotaxis In Vitro
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科学领域:

  • 细胞机械生物学 细胞机械生物学
  • 生物物理学的生物物理.
  • 分子和细胞生理学分子和细胞生理学

背景情况:

  • 细胞对机械力的反应对胚胎发育和成人生理学至关重要.
  • 这些反应与各种疾病有关,包括癌症,骨质疏松症和心血管疾病.
  • 承载载子细胞结构 (等离子体膜,细胞粘附复合体,细胞骨) 介导这些机械反应.

研究的目的:

  • 探索参与力转导的亚细胞结构的动态性质.
  • 阐明这些结构的动态组装和拆卸如何影响细胞信号传递.
  • 解释不同的力特性如何调节不同的生化信号通路.

主要方法:

  • 研究载荷亚细胞结构的动态组装,拆卸和运动.
  • 分析机械力依赖于上下文的转化成生物化学信号.
  • 检查不同力强度和动态对信号通路的调节.

主要成果:

  • 亚细胞结构是高度动态的,即使看起来稳定.
  • 将力转化为生物化学信号与这些结构的动态过程密切相关.
  • 机械力 (强度,动力) 的特征决定了被激活的特定信号通路.

结论:

  • 细胞对机械力量的反应是由动态的亚细胞结构介导的.
  • 这些结构的动态性质对于有效的力转信号转导至关重要.
  • 这个动态框架解释了机械力量如何调节细胞功能和疾病过程.