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相关概念视频

Mechanical Protein Functions01:58

Mechanical Protein Functions

4.9K
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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Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

2.6K
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...
2.6K
Cell-matrix's Response to Mechanical Forces01:13

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...
2.6K

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相关实验视频

Updated: Jun 21, 2025

Probing the Roles of Physical Forces in Early Chick Embryonic Morphogenesis
06:33

Probing the Roles of Physical Forces in Early Chick Embryonic Morphogenesis

Published on: June 5, 2018

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在脊椎动物形态发生过程中量化机械力.

Eirini Maniou1,2,3, Silvia Todros2, Anna Urciuolo1,4,5

  • 1Developmental Biology and Cancer, UCL GOS Institute of Child Health, London, UK.

Nature materials
|July 5, 2024
PubMed
概括
此摘要是机器生成的。

科学家们开发出微小的传感器来测量胚胎发育过程中的力量. 这些传感器揭示了神经管闭合中的力量,这对于预防出生缺陷至关重要.

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Building Finite Element Models to Investigate Zebrafish Jaw Biomechanics
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Building Finite Element Models to Investigate Zebrafish Jaw Biomechanics

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Author Spotlight: Non-Contact Measurement of Tissue Mechanics in Live Chick Embryos Using Brillouin Microscopy
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Author Spotlight: Non-Contact Measurement of Tissue Mechanics in Live Chick Embryos Using Brillouin Microscopy

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相关实验视频

Last Updated: Jun 21, 2025

Probing the Roles of Physical Forces in Early Chick Embryonic Morphogenesis
06:33

Probing the Roles of Physical Forces in Early Chick Embryonic Morphogenesis

Published on: June 5, 2018

7.3K
Building Finite Element Models to Investigate Zebrafish Jaw Biomechanics
14:11

Building Finite Element Models to Investigate Zebrafish Jaw Biomechanics

Published on: December 3, 2016

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Author Spotlight: Non-Contact Measurement of Tissue Mechanics in Live Chick Embryos Using Brillouin Microscopy
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Author Spotlight: Non-Contact Measurement of Tissue Mechanics in Live Chick Embryos Using Brillouin Microscopy

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科学领域:

  • 发育生物学是发展生物学.
  • 生物物理学的生物物理.
  • 组织力学是组织力学.

背景情况:

  • 胚胎细胞在形态发生过程中产生用于组织成形的力量.
  • 功能障碍的力量产生会导致先天性形.
  • 在发展中脊椎动物中量化3D力学是必不可少的.

研究的目的:

  • 开发和利用新的微尺度力传感器来测量脊椎动物形态发生过程中的机械力.
  • 量化神经管关闭过程中胚胎组织所执行的力量和机械工作.
  • 调查活性力量在神经管发育中的作用.

主要方法:

  • 通过体内3D生物打印制造弹性弹式力传感器.
  • 在胚胎的关闭神经管内植入传感器的体内植入.
  • 传感器数据与计算机械建模的整合.
  • 药理上抑制Rho相关激酶以评估力动力学.

主要成果:

  • 在形态发生过程中,胚胎组织所执行的力量和工作的直接量化.
  • 在关闭神经管中的神经折叠应用过程中测量了超过100纳米牛顿的压缩.
  • 确定反对神经管闭合的活跃抗闭合力.
  • 证明,为了成功形成神经管,必须克服这些反闭合力量.

结论:

  • 开发的生物打印和传感技术可以直接量化胚胎组织机制.
  • 活性力量在调节神经管闭合方面发挥着至关重要的作用.
  • 了解这些机械力量是解决与形态发生有关的先天性形的关键.